Fossil

#
TCLSH = tclsh

LIB =	@LDFLAGS@ @EXTRA_LDFLAGS@ @LIBS@
TCCFLAGS =	@EXTRA_CFLAGS@ @CPPFLAGS@ @CFLAGS@ -DHAVE_AUTOCONFIG_H -D_HAVE_SQLITE_CONFIG_H
INSTALLDIR = $(DESTDIR)@prefix@/bin
USE_SYSTEM_SQLITE = @USE_SYSTEM_SQLITE@
USE_LINENOISE = @USE_LINENOISE@
FOSSIL_ENABLE_MINIZ = @FOSSIL_ENABLE_MINIZ@

include $(SRCDIR)/main.mk

distclean: clean
	rm -f autoconfig.h config.log Makefile

# System autoconfiguration. Try: ./configure --help

use cc cc-lib

options {
    with-openssl:path|auto|none
                         => {Look for OpenSSL in the given path, or auto or none}
    with-openssl:path|auto|tree|none
                         => {Look for OpenSSL in the given path, automatically, in the source tree, or none}
    with-miniz=0         => {Use miniz from the source tree}
    with-zlib:path|auto|tree
    with-zlib:path       => {Look for zlib in the given path}
                         => {Look for zlib in the given path, automatically, or in the source tree}
    with-exec-rel-paths=0
                         => {Enable relative paths for external diff/gdiff}
    with-legacy-mv-rm=0  => {Enable legacy behavior for mv/rm (skip checkout files)}
    with-th1-docs=0      => {Enable TH1 for embedded documentation pages}
    with-th1-hooks=0     => {Enable TH1 hooks for commands and web pages}
    with-tcl:path        => {Enable Tcl integration, with Tcl in the specified path}
    with-tcl-stubs=0     => {Enable Tcl integration via stubs library mechanism}

# Find tclsh for the test suite. Can't yet use jimsh for this.
cc-check-progs tclsh

define EXTRA_CFLAGS ""
define EXTRA_LDFLAGS ""
define USE_SYSTEM_SQLITE 0
define USE_LINENOISE 0
define FOSSIL_ENABLE_MINIZ 0

# This procedure is a customized version of "cc-check-function-in-lib",
# that does not modify the LIBS variable.  Its use prevents prematurely
# pulling in libraries that will be added later anyhow (e.g. "-ldl").
proc check-function-in-lib {function libs {otherlibs {}}} {
    if {[string length $otherlibs]} {
        msg-checking "Checking for $function in $libs with $otherlibs..."
    } else {
        msg-checking "Checking for $function in $libs..."
    }
    set found 0
    cc-with [list -libs $otherlibs] {
        if {[cctest_function $function]} {
            msg-result "none needed"
            define lib_$function ""
            incr found
        } else {
            foreach lib $libs {
                cc-with [list -libs -l$lib] {
                    if {[cctest_function $function]} {
                        msg-result -l$lib
                        define lib_$function -l$lib
                        incr found
                        break
                    }
                }
            }
        }
    }
    if {$found} {
        define [feature-define-name $function]
    } else {
        msg-result "no"
    }
    return $found
}

if {![opt-bool internal-sqlite]} {
  proc find_internal_sqlite {} {

    # On some systems (slackware), libsqlite3 requires -ldl to link. So
    # search for the system SQLite once with -ldl, and once without. If
    # the library can only be found with $extralibs set to -ldl, then
    # the code below will append -ldl to LIBS.
    #
    foreach extralibs {{} {-ldl}} {

      # Locate the system SQLite by searching for sqlite3_open(). Then check
      # if sqlite3_strglob() can be found as well. If we can find open() but
      # not strglob(), then the system SQLite is too old to link against
      # if sqlite3_strlike() can be found as well. If we can find open() but
      # not strlike(), then the system SQLite is too old to link against
      # fossil.
      #
      if {[cc-check-function-in-lib sqlite3_open sqlite3 $extralibs]} {
        if {![cc-check-function-in-lib sqlite3_malloc64 sqlite3 $extralibs]} {
          user-error "system sqlite3 too old (require >= 3.8.7)"
      if {[check-function-in-lib sqlite3_open sqlite3 $extralibs]} {
        if {![check-function-in-lib sqlite3_strlike sqlite3 $extralibs]} {
          user-error "system sqlite3 too old (require >= 3.10.0)"
        }

        # Success. Update symbols and return.
        #
        define USE_SYSTEM_SQLITE 1
        define-append LIBS -lsqlite3
        define-append LIBS $extralibs
        return
      }
    }
    user-error "system sqlite3 not found"
  }

  find_internal_sqlite
}

proc is_mingw {} {
    return [string match *mingw* [get-define host]]
}

if {[is_mingw]} {
    define-append EXTRA_CFLAGS -DBROKEN_MINGW_CMDLINE
    define-append LIBS -lkernel32 -lws2_32
} else {
    #
    # NOTE: All platforms except MinGW should use the linenoise
    #       package.  It is currently unsupported on Win32.
    #
    define USE_LINENOISE 1
}

if {[string match *-solaris* [get-define host]]} {
    define-append EXTRA_CFLAGS {-D_XOPEN_SOURCE=500 -D__EXTENSIONS__}
}

if {[opt-bool fossil-debug]} {
    define-append EXTRA_CFLAGS -DFOSSIL_DEBUG

    # XXX: This will not work on all systems.
    define-append EXTRA_LDFLAGS -static
    msg-result "Trying to link statically"
} else {
    define-append EXTRA_CFLAGS -DFOSSIL_DYNAMIC_BUILD=1
    define FOSSIL_DYNAMIC_BUILD
}

# Helper for OpenSSL checking
proc check-for-openssl {msg {cflags {}} {libs {-lssl -lcrypto}}} {
    msg-checking "Checking for $msg..."
    set rc 0
    if {[is_mingw]} {
        lappend libs -lgdi32 -lwsock32
    }
    if {[info exists ::zlib_lib]} {
        lappend libs $::zlib_lib
    }
    msg-quiet cc-with [list -cflags $cflags -libs $libs] {
        if {[cc-check-includes openssl/ssl.h] && \
                [cc-check-functions SSL_new]} {
            incr rc
        }
    }
    if {!$rc && ![is_mingw]} {
        # On some systems, OpenSSL appears to require -ldl to link.
        lappend libs -ldl
        msg-quiet cc-with [list -cflags $cflags -libs $libs] {
            if {[cc-check-includes openssl/ssl.h] && \
                    [cc-check-functions SSL_new]} {
                incr rc
            }
        }
    }
    if {$rc} {
        msg-result "ok"
        return 1
    } else {
        msg-result "no"
        return 0
    }
}

if {[opt-bool with-miniz]} {
    define FOSSIL_ENABLE_MINIZ 1
    msg-result "Using miniz for compression"
} else {
    # Check for zlib, using the given location if specified
    set zlibpath [opt-val with-zlib]
    if {$zlibpath eq "tree"} {
        set zlibdir [file dirname $autosetup(dir)]/compat/zlib
        if {![file isdirectory $zlibdir]} {
            user-error "The zlib in source tree directory does not exist"
        }
        cc-with [list -cflags "-I$zlibdir -L$zlibdir"]
        define-append EXTRA_CFLAGS -I$zlibdir
        define-append LIBS $zlibdir/libz.a
        set ::zlib_lib $zlibdir/libz.a
        msg-result "Using zlib in source tree"
    } else {
        if {$zlibpath ni {auto ""}} {
            cc-with [list -cflags "-I$zlibpath -L$zlibpath"]
            define-append EXTRA_CFLAGS -I$zlibpath
            define-append EXTRA_LDFLAGS -L$zlibpath
            msg-result "Using zlib from $zlibpath"
        }
        if {![cc-check-includes zlib.h] || ![check-function-in-lib inflateEnd z]} {
            user-error "zlib not found please install it or specify the location with --with-zlib"
        }
        set ::zlib_lib -lz
    }
}

set ssldirs [opt-val with-openssl]
if {$ssldirs ne "none"} {
    if {[opt-bool with-miniz]} {
        user-error "The --with-miniz option is incompatible with OpenSSL"
    }
    set found 0
    if {$ssldirs eq "tree"} {
        set ssldir [file dirname $autosetup(dir)]/compat/openssl
        if {![file isdirectory $ssldir]} {
            user-error "The OpenSSL in source tree directory does not exist"
        }
        set msg "ssl in $ssldir"
        set cflags "-I$ssldir/include"
        set ldflags "-L$ssldir"
        set ssllibs "$ssldir/libssl.a $ssldir/libcrypto.a"
        set found [check-for-openssl "ssl in source tree" "$cflags $ldflags" $ssllibs]
    } else {
        if {$ssldirs in {auto ""}} {
            catch {
                set cflags [exec pkg-config openssl --cflags-only-I]
                set ldflags [exec pkg-config openssl --libs-only-L]
                set found [check-for-openssl "ssl via pkg-config" "$cflags $ldflags"]
            } msg
            if {!$found} {
                set ssldirs "{} /usr/sfw /usr/local/ssl /usr/lib/ssl /usr/ssl \
                             /usr/pkg /usr/local /usr /usr/local/opt/openssl"
            }
        }
        if {!$found} {
            foreach dir $ssldirs {
                if {$dir eq ""} {
                    set msg "system ssl"
                    set cflags ""
                    set ldflags ""
                } else {
                    set msg "ssl in $dir"
                    set cflags "-I$dir/include"
                    set ldflags "-L$dir/lib"
                }
                if {[check-for-openssl $msg "$cflags $ldflags"]} {
                    incr found
                    break
                }
            }
        }
    }
    if {$found} {
        define FOSSIL_ENABLE_SSL
        define-append EXTRA_CFLAGS $cflags
        define-append EXTRA_LDFLAGS $ldflags
        if {[info exists ssllibs]} {
            define-append LIBS $ssllibs
        } else {
            define-append LIBS -lssl -lcrypto
        }
        if {[info exists ::zlib_lib]} {
            define-append LIBS $::zlib_lib
        }
        if {[is_mingw]} {
            define-append LIBS -lgdi32 -lwsock32
        }
        msg-result "HTTPS support enabled"

        # Silence OpenSSL deprecation warnings on Mac OS X 10.7.
        if {[string match *-darwin* [get-define host]]} {
            if {[cctest -cflags {-Wdeprecated-declarations}]} {
                define-append EXTRA_CFLAGS -Wdeprecated-declarations
            }
        }
    } else {
        user-error "OpenSSL not found. Consider --with-openssl=none to disable HTTPS support"
    }
} else {
    if {[info exists ::zlib_lib]} {
        define-append LIBS $::zlib_lib
    }
}

set tclpath [opt-val with-tcl]
if {$tclpath ne ""} {
    set tclprivatestubs [opt-bool with-tcl-private-stubs]
    # Note parse-tclconfig-sh is in autosetup/local.tcl
    if {$tclpath eq "1"} {
        set tcldir [file dirname $autosetup(dir)]/compat/tcl-8.6
        if {$tclprivatestubs} {
            set tclconfig(TCL_INCLUDE_SPEC) -Icompat/tcl-8.6/generic
            set tclconfig(TCL_INCLUDE_SPEC) -I$tcldir/generic
            set tclconfig(TCL_VERSION) {Private Stubs}
            set tclconfig(TCL_PATCH_LEVEL) {}
            set tclconfig(TCL_PREFIX) {compat/tcl-8.6}
            set tclconfig(TCL_PREFIX) $tcldir
            set tclconfig(TCL_LD_FLAGS) { }
        } else {
            # Use the system Tcl. Look in some likely places.
            array set tclconfig [parse-tclconfig-sh \
                compat/tcl-8.6/unix compat/tcl-8.6/win \
                $tcldir/unix $tcldir/win \
                /usr /usr/local /usr/share /opt/local]
            set msg "on your system"
        }
    } else {
        array set tclconfig [parse-tclconfig-sh $tclpath]
        set msg "at $tclpath"
    }

                    }
                } else {
                    if {[cc-check-functions Tcl_CreateInterp]} {
                        set foundtcl 1
                    }
                }
            }
        }
        if {!$foundtcl && ![string match *-lpthread* $libs]} {
            # On some systems, TCL_LIB_SPEC appears to be missing
            # "-lpthread".  Try adding it.
            msg-result "Adding \"-lpthread\" and retrying for Tcl..."
            set libs "$libs -lpthread"
            cc-with [list -cflags $cflags -libs $libs] {
                if {$tclstubs} {
                    if {[cc-check-functions Tcl_InitStubs]} {
                        set foundtcl 1
                    }
                } else {
                    if {[cc-check-functions Tcl_CreateInterp]} {
                        set foundtcl 1
                    }
                }
            }
        }
        if {!$foundtcl} {
            if {$tclstubs} {
                user-error "Cannot find a usable Tcl stubs library $msg"
            } else {
                user-error "Cannot find a usable Tcl library $msg"
            }
        }
    }
    set version $tclconfig(TCL_VERSION)$tclconfig(TCL_PATCH_LEVEL)
    msg-result "Found Tcl $version at $tclconfig(TCL_PREFIX)"
    if {!$tclprivatestubs} {
        define-append LIBS $libs
    }
    define-append EXTRA_CFLAGS $cflags
    if {[info exists zlibpath] && $zlibpath eq "tree"} {
      #
      # NOTE: When using zlib in the source tree, prevent Tcl from
      #       pulling in the system one.
      #
      set tclconfig(TCL_LD_FLAGS) [string map [list -lz ""] \
          $tclconfig(TCL_LD_FLAGS)]
    }
    #
    # NOTE: Remove "-ldl" from the TCL_LD_FLAGS because it will be
    #       be checked for near the bottom of this file.
    #
    set tclconfig(TCL_LD_FLAGS) [string map [list -ldl ""] \
        $tclconfig(TCL_LD_FLAGS)]
    define-append EXTRA_LDFLAGS $tclconfig(TCL_LD_FLAGS)
    define FOSSIL_ENABLE_TCL
}

# Helper for OpenSSL checking
proc check-for-openssl {msg {cflags {}}} {
    msg-checking "Checking for $msg..."
    set rc 0
    msg-quiet cc-with [list -cflags $cflags -libs {-lssl -lcrypto}] {
        if {[cc-check-includes openssl/ssl.h] && [cc-check-functions SSL_new]} {
            incr rc
        }
    }
    if {$rc} {
        msg-result "ok"
        return 1
    } else {
        msg-result "no"
        return 0
    }
}

set ssldirs [opt-val with-openssl]
if {$ssldirs ne "none"} {
    set found 0
    if {$ssldirs in {auto ""}} {
        catch {
            set cflags [exec pkg-config openssl --cflags-only-I]
            set ldflags [exec pkg-config openssl --libs-only-L]

            set found [check-for-openssl "ssl via pkg-config" "$cflags $ldflags"]
        } msg
        if {!$found} {
            set ssldirs "{} /usr/sfw /usr/local/ssl /usr/lib/ssl /usr/ssl /usr/pkg /usr/local /usr"
        }
    }
    if {!$found} {
        foreach dir $ssldirs {
            if {$dir eq ""} {
                set msg "system ssl"
                set cflags ""
                set ldflags ""
            } else {
                set msg "ssl in $dir"
                set cflags "-I$dir/include"
                set ldflags "-L$dir/lib"
            }
            if {[check-for-openssl $msg "$cflags $ldflags"]} {
                incr found
                break
            }
        }
    }
    if {$found} {
        define FOSSIL_ENABLE_SSL
        define-append EXTRA_CFLAGS $cflags
        define-append EXTRA_LDFLAGS $ldflags
        define-append LIBS -lssl -lcrypto
        msg-result "HTTPS support enabled"

        # Silence OpenSSL deprecation warnings on Mac OS X 10.7.
        if {[string match *-darwin* [get-define host]]} {
            if {[cctest -cflags {-Wdeprecated-declarations}]} {
                define-append EXTRA_CFLAGS -Wdeprecated-declarations
            }
        }
    } else {
        user-error "OpenSSL not found. Consider --with-openssl=none to disable HTTPS support"
    }
}

if {[opt-bool with-miniz]} {
  define FOSSIL_ENABLE_MINIZ 1
  msg-result "Using miniz for compression"
} else {
  # Check for zlib, using the given location if specified
  set zlibpath [opt-val with-zlib]
  if {$zlibpath ne ""} {
      cc-with [list -cflags "-I$zlibpath -L$zlibpath"]
      define-append EXTRA_CFLAGS -I$zlibpath
      define-append EXTRA_LDFLAGS -L$zlibpath
      msg-result "Using zlib from $zlibpath"
  }
  if {![cc-check-includes zlib.h] || ![cc-check-function-in-lib inflateEnd z]} {
      user-error "zlib not found please install it or specify the location with --with-zlib"
  }
}

# Network functions require libraries on some systems
cc-check-function-in-lib gethostbyname nsl
if {![cc-check-function-in-lib socket {socket network}]} {
    # Last resort, may be Windows
    if {[string match *mingw* [get-define host]]} {
    if {[is_mingw]} {
        define-append LIBS -lwsock32
    }
}
cc-check-function-in-lib iconv iconv
cc-check-functions utime
cc-check-functions usleep
cc-check-functions strchrnul

	return $pwd
}

# Follow symlinks until we get to something which is not a symlink
proc realpath {path} {
	while {1} {
		if {[catch {
			set path [file link $path]
			set path [file readlink $path]
		}]} {
			# Not a link
			break
		}
	}
	return $path
}

    exit 0
}

# If not already paged and stdout is a tty, pipe the output through the pager
# This is done by reinvoking autosetup with --nopager added
proc use_pager {} {
    if {![opt-bool nopager] && [getenv PAGER ""] ne "" && [isatty? stdin] && [isatty? stdout]} {
        catch {
            exec [info nameofexecutable] $::argv0 --nopager {*}$::argv |& [getenv PAGER] >@stdout <@stdin
        if {[catch {
            exec [info nameofexecutable] $::argv0 --nopager {*}$::argv |& {*}[getenv PAGER] >@stdout <@stdin 2>@stderr
        } msg opts] == 1} {
            if {[dict get $opts -errorcode] eq "NONE"} {
                # an internal/exec error
                puts stderr $msg
                exit 1
            }
        }
        exit 0
    }
}

# Outputs the autosetup references in one of several formats
proc autosetup_reference {{type text}} {

# Reads the input file <srcdir>/$template and writes the output file $outfile.
# If $outfile is blank/omitted, $template should end with ".in" which
# is removed to create the output file name.
#
# Each pattern of the form @define@ is replaced the the corresponding
# define, if it exists, or left unchanged if not.
# 
# The special value @srcdir@ is subsituted with the relative
# The special value @srcdir@ is substituted with the relative
# path to the source directory from the directory where the output
# file is created. Use @top_srcdir@ for the absolute path.
# file is created, while the special value @top_srcdir@ is substituted
# with the relative path to the top level source directory.
#
# Conditional sections may be specified as follows:
## @if name == value
## lines
## @else
## lines
## @endif

	}

	set outdir [file dirname $out]

	# Make sure the directory exists
	file mkdir $outdir

	# Set up srcdir to be relative to the target dir
	# Set up srcdir and top_srcdir to be relative to the target dir
	define srcdir [relative-path [file join $::autosetup(srcdir) $outdir] $outdir]
	define top_srcdir [relative-path $::autosetup(srcdir) $outdir]

	set mapping {}
	foreach {n v} [array get ::define] {
		lappend mapping @$n@ $v
	}
	set result {}
	foreach line [split [readfile $infile] \n] {

    dryRunFlag = find_option("test",0,0)!=0; /* deprecated */
  }

  if( g.argc<3 ){
    usage("SUBCOMMAND ...");
  }
  n = strlen(g.argv[2]);
  db_open_config(1);
  db_open_config(1, 0);
  blob_zero(&extra);
  zCmd = g.argv[2];
  if( !login_is_nobody() ) blob_appendf(&extra, " -U %s", g.zLogin);
  if( strncmp(zCmd, "list", n)==0 || strncmp(zCmd,"ls",n)==0 ){
    zCmd = "list";
    useCheckouts = find_option("ckout","c",0)!=0;
  }else if( strncmp(zCmd, "clean", n)==0 ){

    int j;
    Blob fn = BLOB_INITIALIZER;
    Blob sql = BLOB_INITIALIZER;
    useCheckouts = find_option("ckout","c",0)!=0;
    verify_all_options();
    db_begin_transaction();
    for(j=3; j<g.argc; j++, blob_reset(&sql), blob_reset(&fn)){
      file_canonical_name(g.argv[j], &fn, 0);
      file_canonical_name(g.argv[j], &fn, useCheckouts?1:0);
      blob_append_sql(&sql,
         "DELETE FROM global_config WHERE name GLOB '%s:%q'",
         useCheckouts?"ckout":"repo", blob_str(&fn)
      );
      if( dryRunFlag ){
        fossil_print("%s\n", blob_sql_text(&sql));
      }else{

      output_text_with_line_numbers(z, zLn);
    }else{
      @ <pre>
      @ %h(z)
      @ </pre>
    }
  }else if( strncmp(zMime, "image/", 6)==0 ){
    int sz = db_int(0, "SELECT size FROM blob WHERE rid=%d", ridSrc);
    @ <i>(file is %d(sz) bytes of image data)</i><br>
    @ <img src="%R/raw/%s(zSrc)?m=%s(zMime)"></img>
    style_submenu_element("Image", "Image", "%R/raw/%s?m=%s", zSrc, zMime);
  }else{
    int sz = db_int(0, "SELECT size FROM blob WHERE rid=%d", ridSrc);
    @ <i>(file is %d(sz) bytes of binary data)</i>
  }
  @ </blockquote>

**
**    list|ls      List the keys and content sizes and other stats for
**                 all entries currently in the cache
**
**    status       Show a summary of cache status.
**
** The cache is stored in a file that is distinct from the repository
** but that is held in the same directory as the repository.  To cache
** but that is held in the same directory as the repository.  The cache
** file can be deleted in order to completely disable the cache.
*/
void cache_cmd(void){
  const char *zCmd;
  int nCmd;
  sqlite3 *db;
  sqlite3_stmt *pStmt;

*/
void cgi_parse_POST_JSON( FILE * zIn, unsigned int contentLen ){
  cson_value * jv = NULL;
  int rc;
  CgiPostReadState state;
  cson_parse_opt popt = cson_parse_opt_empty;
  cson_parse_info pinfo = cson_parse_info_empty;
  assert(g.json.gc.a && "json_main_bootstrap() was not called!");
  popt.maxDepth = 15;
  state.fh = zIn;
  state.len = contentLen;
  state.pos = 0;
  rc = cson_parse( &jv,
                   contentLen ? cson_data_source_FILE_n : cson_data_source_FILE,
                   contentLen ? (void *)&state : (void *)zIn, &popt, &pinfo );

  timeOrder = find_option("t","t",0)!=0;

  if( zRev!=0 ){
    db_find_and_open_repository(0, 0);
    verify_all_options();
    ls_cmd_rev(zRev,verboseFlag,showAge,timeOrder);
    return;
  }else if( find_option("R",0,1)!=0 ){
    fossil_fatal("the -r is required in addition to -R");
  }

  db_must_be_within_tree();
  vid = db_lget_int("checkout", 0);
  if( timeOrder ){
    if( showAge ){
      zOrderBy = mprintf("checkin_mtime(%d,rid) DESC", vid);

    return;
  }
  if( !keepFlag ){
    uncheckout(prior);
  }
  db_multi_exec("DELETE FROM vfile WHERE vid!=%d", vid);
  if( !keepFlag ){
    vfile_to_disk(vid, 0, 1, promptFlag);
    vfile_to_disk(vid, 0, !g.fQuiet, promptFlag);
  }
  checkout_set_all_exe(vid);
  manifest_to_disk(vid);
  ensure_empty_dirs_created();
  db_lset_int("checkout", vid);
  undo_reset();
  db_multi_exec("DELETE FROM vmerge");

  /* We should be done with options.. */
  verify_all_options();

  if( g.argc < 4 ){
    usage("?OPTIONS? FILE-OR-URL NEW-REPOSITORY");
  }
  db_open_config(0);
  db_open_config(0, 0);
  if( -1 != file_size(g.argv[3]) ){
    fossil_fatal("file already exists: %s", g.argv[3]);
  }

  url_parse(g.argv[2], urlFlags);
  if( zDefaultUser==0 && g.url.user!=0 ) zDefaultUser = g.url.user;
  if( g.url.isFile ){

**
** See also: settings, unset
*/
void configuration_cmd(void){
  int n;
  const char *zMethod;
  db_find_and_open_repository(0, 0);
  db_open_config(0);
  db_open_config(0, 0);
  if( g.argc<3 ){
    usage("SUBCOMMAND ...");
  }
  zMethod = g.argv[2];
  n = strlen(zMethod);
  if( strncmp(zMethod, "export", n)==0 ){
    int mask;

/*
** COMMAND:  test-content-undelta
**
** Make sure the content at RECORDID is not a delta
*/
void test_content_undelta_cmd(void){
  int rid;
  if( g.argc!=2 ) usage("RECORDID");
  if( g.argc!=3 ) usage("RECORDID");
  db_must_be_within_tree();
  rid = atoi(g.argv[2]);
  content_undelta(rid);
}

/*
** Return true if the given RID is marked as PRIVATE.

    if( blob_size(&content)!=size ){
      fossil_print("size mismatch on artifact %d: wanted %d but got %d\n",
                     rid, size, blob_size(&content));
      nErr++;
    }
    sha1sum_blob(&content, &cksum);
    if( fossil_strcmp(blob_str(&cksum), zUuid)!=0 ){
      fossil_print("checksum mismatch on artifact %d: wanted %s but got %s\n",
      fossil_print("wrong hash on artifact %d: wanted %s but got %s\n",
                   rid, zUuid, blob_str(&cksum));
      nErr++;
    }
    if( bParse && looks_like_control_artifact(&content) ){
      Blob err;
      int i, n;
      char *z;

        "control", "wiki", "ticket", "attachment", "event" };
    int i;
    fossil_print("%d total control artifacts\n", nCA);
    for(i=1; i<count(azType); i++){
      if( anCA[i] ) fossil_print("  %d %ss\n", anCA[i], azType[i]);
    }
  }
  fossil_print("low-level database integrity-check: ");
  fossil_print("%s\n", db_text(0, "PRAGMA integrity_check(10)"));
}

/*
** COMMAND: test-orphans
**
** Search the repository for orphaned artifacts
*/

  }
  db_finalize(&q);
  if( nErr>0 || quietFlag==0 ){
    fossil_print("%d missing or shunned references in %d control artifacts\n",
                 nErr, nArtifact);
  }
}

/*
** COMMAND: test-content-erase
**
** Usage: %fossil test-content-erase RID ....
**
** Remove all traces of one or more artifacts from the local repository.
**
** WARNING: This command destroys data and can cause you to lose work.
** Make sure you have a backup copy before using this command!
**
** WARNING: You must run "fossil rebuild" after this command to rebuild
** the metadata.
**
** Note that the arguments are the integer raw RID values from the BLOB table,
** not SHA1 hashs or labels.
*/
void test_content_erase(void){
  int i;
  Blob x;
  char c;
  Stmt q;
  prompt_user("This command erases information from the repository and\n"
              "might irrecoverably damage the repository.  Make sure you\n"
              "have a backup copy!\n"
              "Continue? (y/N)? ", &x);
  c = blob_str(&x)[0];
  blob_reset(&x);
  if( c!='y' && c!='Y' ) return;
  db_find_and_open_repository(OPEN_ANY_SCHEMA, 0);
  db_begin_transaction();
  db_prepare(&q, "SELECT rid FROM delta WHERE srcid=:rid");
  for(i=2; i<g.argc; i++){
    int rid = atoi(g.argv[i]);
    fossil_print("Erasing artifact %d (%s)\n", 
                 rid, db_text("", "SELECT uuid FROM blob WHERE rid=%d", rid));
    db_bind_int(&q, ":rid", rid);
    while( db_step(&q)==SQLITE_ROW ){
      content_undelta(db_column_int(&q,0));
    }
    db_reset(&q);
    db_multi_exec("DELETE FROM blob WHERE rid=%d", rid);
    db_multi_exec("DELETE FROM delta WHERE rid=%d", rid);
  }
  db_finalize(&q);
  db_end_transaction(0);
}

** opened on a separate database connection g.dbConfig.  This prevents
** the ~/.fossil database from becoming locked on long check-in or sync
** operations which hold an exclusive transaction.  In a few cases, though,
** it is convenient for the ~/.fossil to be attached to the main database
** connection so that we can join between the various databases.  In that
** case, invoke this routine with useAttach as 1.
*/
void db_open_config(int useAttach){
int db_open_config(int useAttach, int isOptional){
  char *zDbName;
  char *zHome;
  if( g.zConfigDbName ){
    if( useAttach==g.useAttach ) return;
    if( useAttach==g.useAttach ) return 1; /* Already open. */
    db_close_config();
  }
  zHome = fossil_getenv("FOSSIL_HOME");
#if defined(_WIN32) || defined(__CYGWIN__)
  if( zHome==0 ){
    zHome = fossil_getenv("LOCALAPPDATA");
    if( zHome==0 ){
      zHome = fossil_getenv("APPDATA");
      if( zHome==0 ){
        char *zDrive = fossil_getenv("HOMEDRIVE");
        char *zPath = fossil_getenv("HOMEPATH");
        if( zDrive && zPath ) zHome = mprintf("%s%s", zDrive, zPath);
      }
    }
  }
  if( zHome==0 ){
    if( isOptional ) return 0;
    fossil_fatal("cannot locate home directory - please set the "
                 "FOSSIL_HOME, LOCALAPPDATA, APPDATA, or HOMEPATH "
                 "environment variables");
  }
#else
  if( zHome==0 ){
    zHome = fossil_getenv("HOME");
  }
  if( zHome==0 ){
    if( isOptional ) return 0;
    fossil_fatal("cannot locate home directory - please set the "
                 "FOSSIL_HOME or HOME environment variables");
  }
#endif
  if( file_isdir(zHome)!=1 ){
    if( isOptional ) return 0;
    fossil_fatal("invalid home directory: %s", zHome);
  }
#if defined(_WIN32) || defined(__CYGWIN__)
  /* . filenames give some window systems problems and many apps problems */
  zDbName = mprintf("%//_fossil", zHome);
#else
  zDbName = mprintf("%s/.fossil", zHome);
#endif
  if( file_size(zDbName)<1024*3 ){
    if( file_access(zHome, W_OK) ){
      if( isOptional ) return 0;
      fossil_fatal("home directory %s must be writeable", zHome);
    }
    db_init_database(zDbName, zConfigSchema, (char*)0);
  }
  if( file_access(zDbName, W_OK) ){
    if( isOptional ) return 0;
    fossil_fatal("configuration file %s must be writeable", zDbName);
  }
  if( useAttach ){
    db_open_or_attach(zDbName, "configdb", &g.useAttach);
    g.dbConfig = 0;
    g.zConfigDbType = 0;
  }else{
    g.useAttach = 0;
    g.dbConfig = db_open(zDbName);
    g.zConfigDbType = "configdb";
  }
  g.zConfigDbName = zDbName;
  return 1;
}

/*
** Return TRUE if zTable exists.
*/
int db_table_exists(
  const char *zDb,      /* One of: NULL, "configdb", "localdb", "repository" */

  if( g.localOpen ) return 1;
  file_getcwd(zPwd, sizeof(zPwd)-20);
  n = strlen(zPwd);
  while( n>0 ){
    for(i=0; i<count(aDbName); i++){
      sqlite3_snprintf(sizeof(zPwd)-n, &zPwd[n], "/%s", aDbName[i]);
      if( isValidLocalDb(zPwd) ){
        if( db_open_config(0, 1)==0 ){
          return 0; /* Configuration could not be opened */
        }
        /* Found a valid checkout database file */
        g.zLocalDbName = mprintf("%s", zPwd);
        zPwd[n] = 0;
        while( n>0 && zPwd[n-1]=='/' ){
          n--;
          zPwd[n] = 0;
        }
        g.zLocalRoot = mprintf("%s/", zPwd);
        g.localOpen = 1;
        db_open_config(0);
        db_open_repository(zDbName);
        return 1;
      }
    }
    n--;
    while( n>1 && zPwd[n]!='/' ){ n--; }
    while( n>1 && zPwd[n-1]=='/' ){ n--; }

  if( -1 != file_size(g.argv[2]) ){
    fossil_fatal("file already exists: %s", g.argv[2]);
  }

  db_create_repository(g.argv[2]);
  db_open_repository(g.argv[2]);
  db_open_config(0);
  db_open_config(0, 0);
  if( zTemplate ) db_attach(zTemplate, "settingSrc");
  db_begin_transaction();
  if( zDate==0 ) zDate = "now";
  db_initial_setup(zTemplate, zDate, zDefaultUser);
  db_end_transaction(0);
  if( zTemplate ) db_detach("settingSrc");
  fossil_print("project-id: %s\n", db_get("project-code", 0));

**
** See also: configuration
*/
void setting_cmd(void){
  int i;
  int globalFlag = find_option("global","g",0)!=0;
  int unsetFlag = g.argv[1][0]=='u';
  db_open_config(1);
  db_open_config(1, 0);
  if( !globalFlag ){
    db_find_and_open_repository(OPEN_ANY_SCHEMA | OPEN_OK_NOT_FOUND, 0);
  }
  if( !g.repositoryOpen ){
    globalFlag = 1;
  }
  if( unsetFlag && g.argc!=3 ){

  sz1 = blob_size(&orig);
  sz2 = blob_size(&target);
  sz3 = blob_size(&delta);
  blob_reset(&orig);
  blob_reset(&target);
  blob_reset(&delta);
  fossil_print("original size:  %8d\n", sz1);
  fossil_print("bytes copied:   %8d (%.1f%% of target)\n",
  fossil_print("bytes copied:   %8d (%.2f%% of target)\n",
               nCopy, (100.0*nCopy)/sz2);
  fossil_print("bytes inserted: %8d (%.1f%% of target)\n",
  fossil_print("bytes inserted: %8d (%.2f%% of target)\n",
               nInsert, (100.0*nInsert)/sz2);
  fossil_print("final size:     %8d\n", sz2);
  fossil_print("delta size:     %8d\n", sz3);
}

/*
** Apply the delta in pDelta to the original file pOriginal to generate

    fossil_binary_mode(pIn);
  }
  if( !incrFlag ){
    if( forceFlag ) file_delete(g.argv[2]);
    db_create_repository(g.argv[2]);
  }
  db_open_repository(g.argv[2]);
  db_open_config(0);
  db_open_config(0, 0);

  db_begin_transaction();
  if( !incrFlag ) db_initial_setup(0, 0, 0);

  if( svnFlag ){
    db_multi_exec(
       "CREATE TEMP TABLE xrevisions("

  i64 fsize;
  int verboseFlag = find_option("verbose","v",0)!=0;
  if( !verboseFlag ){
    verboseFlag = find_option("detail","l",0)!=0; /* deprecated */
  }

  if( g.argc==3 && (fsize = file_size(g.argv[2]))>0 && (fsize&0x1ff)==0 ){
    db_open_config(0);
    db_open_config(0, 0);
    db_open_repository(g.argv[2]);
    db_record_repository_filename(g.argv[2]);
    fossil_print("project-name: %s\n", db_get("project-name", "<unnamed>"));
    fossil_print("project-code: %s\n", db_get("project-code", "<none>"));
    extraRepoInfo();
    return;
  }

          output_text_with_line_numbers(z, zLn);
        }else{
          @ <pre>
          @ %h(z)
          @ </pre>
        }
      }else if( strncmp(zMime, "image/", 6)==0 ){
        @ <i>(file is %d(blob_size(&content)) bytes of image data)</i><br>
        @ <img src="%R/raw/%s(zUuid)?m=%s(zMime)" />
        style_submenu_element("Image", "Image",
                              "%R/raw/%s?m=%s", zUuid, zMime);
      }else{
        @ <i>(file is %d(blob_size(&content)) bytes of binary data)</i>
      }
      @ </blockquote>

** Amend the tags on check-in UUID to change how it displays in the timeline.
**
** Options:
**
**    --author USER           Make USER the author for check-in
**    -m|--comment COMMENT    Make COMMENT the check-in comment
**    -M|--message-file FILE  Read the amended comment from FILE
**    --edit-comment          Launch editor to revise comment
**    -e|--edit-comment       Launch editor to revise comment
**    --date DATE             Make DATE the check-in time
**    --bgcolor COLOR         Apply COLOR to this check-in
**    --branchcolor COLOR     Apply and propagate COLOR to the branch
**    --tag TAG               Add new TAG to this check-in
**    --cancel TAG            Cancel TAG from this check-in
**    --branch NAME           Make this check-in the start of branch NAME
**    --hide                  Hide branch starting from this check-in

  Blob comment;
  char *zNow;
  int nTags, nCancels;
  int i;
  Stmt q;

  if( g.argc==3 ) usage(AMEND_USAGE_STMT);
  fEditComment = find_option("edit-comment",0,0)!=0;
  fEditComment = find_option("edit-comment","e",0)!=0;
  zNewComment = find_option("comment","m",1);
  zComFile = find_option("message-file","M",1);
  zNewBranch = find_option("branch",0,1);
  zNewColor = find_option("bgcolor",0,1);
  zNewBrColor = find_option("branchcolor",0,1);
  if( zNewBrColor ){
    zNewColor = zNewBrColor;

** incorrectly removes it from the gc (which we never do). If this
** function fails, it is fatal to the app (as it indicates an
** allocation error (more likely than not) or a serious internal error
** such as numeric overflow).
*/
void json_gc_add( char const * key, cson_value * v ){
  int const rc = cson_array_append( g.json.gc.a, v );

  assert( NULL != g.json.gc.a );
  if( 0 != rc ){
    cson_value_free( v );
  }
  assert( (0==rc) && "Adding item to GC failed." );
  if(0!=rc){
    fprintf(stderr,"%s: FATAL: alloc error.\n", g.argv[0])

/*
** The boolean equivalent of json_find_option_cstr().
** If the option is not found, dftl is returned.
*/
int json_find_option_bool(char const * zKey,
                          char const * zCLILong,
                          char const * zCLIShort,
                          char dflt ){
                          int dflt ){
  int rc = -1;
  if(!g.isHTTP){
    if(NULL != find_option(zCLILong ? zCLILong : zKey,
                           zCLIShort, 0)){
      rc = 1;
    }
  }

** we will not be able to replace fossil's internal idea of the auth
** info in time (and future changes to that state may cause unexpected
** results).
**
** The result of this call are cached for future calls.
*/
cson_value * json_auth_token(){
    assert(g.json.gc.a && "json_main_bootstrap() was not called!");
  if( !g.json.authToken ){
    if( !g.json.authToken ){
    /* Try to get an authorization token from GET parameter, POSTed
       JSON, or fossil cookie (in that order). */
    g.json.authToken = json_getenv(FossilJsonKeys.authToken);
    if(g.json.authToken
       && cson_value_is_string(g.json.authToken)
       && !PD(login_cookie_name(),NULL)){
      /* tell fossil to use this login info.

  /* g.json.gc is our "garbage collector" - where we put JSON values
     which need a long lifetime but don't have a logical parent to put
     them in.
  */
  v = cson_value_new_array();
  g.json.gc.v = v;
  assert(0 != g.json.gc.v);
  g.json.gc.a = cson_value_get_array(v);
  assert(0 != g.json.gc.a);
  cson_value_add_reference(v)
    /* Needed to allow us to include this value in other JSON
       containers without transferring ownership to those containers.
       All other persistent g.json.XXX.v values get appended to
       g.json.gc.a, and therefore already have a live reference
       for this purpose.
    */

** for consistency with how json_err() works.
*/
void json_warn( int code, char const * fmt, ... ){
  cson_object * obj = NULL;
  assert( (code>FSL_JSON_W_START)
          && (code<FSL_JSON_W_END)
          && "Invalid warning code.");
  assert(g.json.gc.a && "json_main_bootstrap() was not called!");
  if(!g.json.warnings){
    g.json.warnings = cson_new_array();
    assert((NULL != g.json.warnings) && "Alloc error.");
    json_gc_add("$WARNINGS",cson_array_value(g.json.warnings));
  }
  obj = cson_new_object();
  cson_array_append(g.json.warnings, cson_object_value(obj));

** Achtung: leading and trailing whitespace of elements are elided.
**
** Achtung: empty elements will be skipped, meaning consecutive empty
** elements are collapsed.
*/
int json_string_split( char const * zStr,
                       char separator,
                       char doDeHttp,
                       int doDeHttp,
                       cson_array * target ){
  char const * p = zStr /* current byte */;
  char const * head  /* current start-of-token */;
  unsigned int len = 0   /* current token's length */;
  int rc = 0   /* return code (number of added elements)*/;
  assert( zStr && target );
  while( fossil_isspace(*p) ){

** in any way or produced no tokens).
**
** The returned value is owned by the caller. If not NULL then it
** _will_ have a JSON type of Array.
*/
cson_value * json_string_split2( char const * zStr,
                                 char separator,
                                 char doDeHttp ){
                                 int doDeHttp ){
  cson_array * a = cson_new_array();
  int rc = json_string_split( zStr, separator, doDeHttp, a );
  if( 0>=rc ){
    cson_free_array(a);
    a = NULL;
  }
  return a ? cson_array_value(a) : NULL;

** before they do any work.
**
** This must only be called once, or an assertion may be triggered.
*/
static void json_mode_bootstrap(){
  static char once = 0  /* guard against multiple runs */;
  char const * zPath = P("PATH_INFO");
  assert(g.json.gc.a && "json_main_bootstrap() was not called!");
  assert( (0==once) && "json_mode_bootstrap() called too many times!");
  if( once ){
    return;
  }else{
    once = 1;
  }
  g.json.isJsonMode = 1;

** invalidated if that object is modified (depending on how it is
** modified).
**
** Note that CLI options are not included in the command path. Use
** find_option() to get those.
**
*/
char const * json_command_arg(unsigned char ndx){
char const * json_command_arg(unsigned short ndx){
  cson_array * ar = g.json.cmd.a;
  assert((NULL!=ar) && "Internal error. Was json_mode_bootstrap() called?");
  assert((g.argc>1) && "Internal error - we never should have gotten this far.");
  if( g.json.cmd.offset < 0 ){
    /* first-time setup. */
    short i = 0;
#define NEXT cson_string_cstr(          \

** If !g.isHTTP then alsoOutput is ignored and all output is sent to
** stdout immediately.
**
** For generating the resultText property: if msg is not NULL then it
** is used as-is. If it is NULL then g.zErrMsg is checked, and if that
** is NULL then json_err_cstr(code) is used.
*/
void json_err( int code, char const * msg, char alsoOutput ){
void json_err( int code, char const * msg, int alsoOutput ){
  int rc = code ? code : (g.json.resultCode
                          ? g.json.resultCode
                          : FSL_JSON_E_UNKNOWN);
  cson_value * resp = NULL;
  rc = json_dumbdown_rc(rc);
  if( rc && !msg ){
    msg = g.zErrMsg;

** pTgt has the same semantics as described for
** json_stmt_to_array_of_obj().
**
** FIXME: change this to take a (char const *) instead of a blob,
** to simplify the trivial use-cases (which don't need a Blob).
*/
cson_value * json_sql_to_array_of_obj(Blob * pSql, cson_array * pTgt,
                                      char resetBlob){
                                      int resetBlob){
  Stmt q = empty_Stmt;
  cson_value * pay = NULL;
  assert( blob_size(pSql) > 0 );
  db_prepare(&q, "%s", blob_str(pSql) /*safe-for-%s*/);
  if(resetBlob){
    blob_reset(pSql);
  }

**
** See info_tags_of_checkin() for more details (this is simply a JSON
** wrapper for that function).
**
** If there are no tags then this function returns NULL, not an empty
** Array.
*/
cson_value * json_tags_for_checkin_rid(int rid, char propagatingOnly){
cson_value * json_tags_for_checkin_rid(int rid, int propagatingOnly){
  cson_value * v = NULL;
  char * tags = info_tags_of_checkin(rid, propagatingOnly);
  if(tags){
    if(*tags){
      v = json_string_split2(tags,',',0);
    }
    free(tags);

**
** Pages under /json/... must be entered into JsonPageDefs.
** This function dispatches them, and is the HTTP equivalent of
** json_cmd_top().
*/
void json_page_top(void){
  char const * zCommand;
  assert(g.json.gc.a && "json_main_bootstrap() was not called!");
  json_mode_bootstrap();
  zCommand = json_command_arg(1);
  if(!zCommand || !*zCommand){
    json_dispatch_missing_args_err( JsonPageDefs,
                                    "No command (sub-path) specified."
                                    " Try one of: ");
    return;

  **
  ** <0 = CLI only, >0 = HTTP only, 0==both
  **
  ** Now that we can simulate POST in CLI mode, the distinction
  ** between them has disappeared in most (or all) cases, so 0 is
  ** the standard value.
  */
  char runMode;
  int runMode;
} JsonPageDef;

/*
** Holds common keys used for various JSON API properties.
*/
typedef struct FossilJsonKeys_{
  /** maintainers: please keep alpha sorted (case-insensitive) */

  }

  blob_init(&w1, pW1->zWiki, -1);
  blob_zero(&w2);
  blob_init(&w2, pW2->zWiki, -1);
  blob_zero(&d);
  diffFlags = DIFF_IGNORE_EOLWS | DIFF_STRIP_EOLCR;
  text_diff(&w2, &w1, &d, 0, diffFlags);
  text_diff(&w1, &w2, &d, 0, diffFlags);
  blob_reset(&w1);
  blob_reset(&w2);

  pay = cson_new_object();
  
  zUuid = json_wiki_get_uuid_for_rid( pW1->rid );
  cson_object_set(pay, "v1", json_new_string(zUuid) );

  int i;
  FossilUserPerms *p = (flags & LOGIN_ANON) ? &g.anon : &g.perm;
  if(NULL==zCap){
    return;
  }
  for(i=0; zCap[i]; i++){
    switch( zCap[i] ){
      case 's':   p->Setup = 1;  /* Fall thru into Admin */
      case 's':   p->Setup = 1; /* Fall thru into Admin */
      case 'a':   p->Admin = p->RdTkt = p->WrTkt = p->Zip =
                           p->RdWiki = p->WrWiki = p->NewWiki =
                           p->ApndWiki = p->Hyperlink = p->Clone =
                           p->NewTkt = p->Password = p->RdAddr =
                           p->TktFmt = p->Attach = p->ApndTkt =
                           p->ModWiki = p->ModTkt = 1;
                           /* Fall thru into Read/Write */
      case 'i':   p->Read = p->Write = 1;                     break;
                             p->RdWiki = p->WrWiki = p->NewWiki =
                             p->ApndWiki = p->Hyperlink = p->Clone =
                             p->NewTkt = p->Password = p->RdAddr =
                             p->TktFmt = p->Attach = p->ApndTkt =
                             p->ModWiki = p->ModTkt = p->Delete =
                             p->Private = 1;
                             /* Fall thru into Read/Write */
      case 'i':   p->Read = p->Write = 1;                      break;
      case 'o':   p->Read = 1;                                 break;
      case 'z':   p->Zip = 1;                                  break;

      case 'd':   p->Delete = 1;                               break;
      case 'h':   p->Hyperlink = 1;                            break;
      case 'g':   p->Clone = 1;                                break;
      case 'p':   p->Password = 1;                             break;

      case 'j':   p->RdWiki = 1;                               break;
      case 'k':   p->WrWiki = p->RdWiki = p->ApndWiki =1;    break;
      case 'k':   p->WrWiki = p->RdWiki = p->ApndWiki =1;      break;
      case 'm':   p->ApndWiki = 1;                             break;
      case 'f':   p->NewWiki = 1;                              break;
      case 'l':   p->ModWiki = 1;                              break;

      case 'e':   p->RdAddr = 1;                               break;
      case 'r':   p->RdTkt = 1;                                break;
      case 'n':   p->NewTkt = 1;                               break;

      case 't':  rc = p->TktFmt;    break;
      /* case 'u': READER    */
      /* case 'v': DEVELOPER */
      case 'w':  rc = p->WrTkt;     break;
      case 'x':  rc = p->Private;   break;
      /* case 'y': */
      case 'z':  rc = p->Zip;       break;
      default:   rc = 0;             break;
      default:   rc = 0;            break;
    }
  }
  return rc;
}

/*
** Change the login to zUser.

void login_insert_csrf_secret(void){
  @ <input type="hidden" name="csrf" value="%s(g.zCsrfToken)" />
}

/*
** Before using the results of a form, first call this routine to verify
** that this Anti-CSRF token is present and is valid.  If the Anti-CSRF token
** is missing or is incorrect, that indicates a cross-site scripting attach
** so emits an error message and abort.
** is missing or is incorrect, that indicates a cross-site scripting attack.
** If the event of an attack is detected, an error message is generated and
** all further processing is aborted.
*/
void login_verify_csrf_secret(void){
  if( g.okCsrf ) return;
  if( fossil_strcmp(P("csrf"), g.zCsrfToken)==0 ){
    g.okCsrf = 1;
    return;
  }

#endif
int main(int argc, char **argv)
#endif
{
  const char *zCmdName = "unknown";
  int idx;
  int rc;
  if( sqlite3_libversion_number()<3008007 ){
    fossil_fatal("Unsuitable SQLite version %s, must be at least 3.8.7",
  if( sqlite3_libversion_number()<3010000 ){
    fossil_fatal("Unsuitable SQLite version %s, must be at least 3.10.0",
                 sqlite3_libversion());
  }
  sqlite3_config(SQLITE_CONFIG_MULTITHREAD);
  sqlite3_config(SQLITE_CONFIG_LOG, fossil_sqlite_log, 0);
  memset(&g, 0, sizeof(g));
  g.now = time(0);
  g.httpHeader = empty_blob;

** This function returns a human readable version string.
*/
const char *get_version(){
  static const char version[] = RELEASE_VERSION " " MANIFEST_VERSION " "
                                MANIFEST_DATE " UTC";
  return version;
}

/*
** This function populates a blob with version information.  It is used by
** the "version" command and "test-version" web page.  It assumes the blob
** passed to it is uninitialized; otherwise, it will leak memory.
*/
static void get_version_blob(
  Blob *pOut,                 /* Write the manifest here */
  int bVerbose                /* Non-zero for full information. */
){
#if defined(FOSSIL_ENABLE_TCL)
  int rc;
  const char *zRc;
#endif
  blob_zero(pOut);
  blob_appendf(pOut, "This is fossil version %s\n", get_version());
  if( !bVerbose ) return;
  blob_appendf(pOut, "Compiled on %s %s using %s (%d-bit)\n",
               __DATE__, __TIME__, COMPILER_NAME, sizeof(void*)*8);
  blob_appendf(pOut, "SQLite %s %.30s\n", sqlite3_libversion(),
               sqlite3_sourceid());
  blob_appendf(pOut, "Schema version %s\n", AUX_SCHEMA_MAX);
#if defined(FOSSIL_ENABLE_MINIZ)
  blob_appendf(pOut, "miniz %s, loaded %s\n", MZ_VERSION, mz_version());
#else
  blob_appendf(pOut, "zlib %s, loaded %s\n", ZLIB_VERSION, zlibVersion());
#endif
#if defined(FOSSIL_ENABLE_SSL)
  blob_appendf(pOut, "SSL (%s)\n", SSLeay_version(SSLEAY_VERSION));
#endif
#if defined(FOSSIL_ENABLE_LEGACY_MV_RM)
  blob_append(pOut, "LEGACY_MV_RM\n", -1);
#endif
#if defined(FOSSIL_ENABLE_EXEC_REL_PATHS)
  blob_append(pOut, "EXEC_REL_PATHS\n", -1);
#endif
#if defined(FOSSIL_ENABLE_TH1_DOCS)
  blob_append(pOut, "TH1_DOCS\n", -1);
#endif
#if defined(FOSSIL_ENABLE_TH1_HOOKS)
  blob_append(pOut, "TH1_HOOKS\n", -1);
#endif
#if defined(FOSSIL_ENABLE_TCL)
  Th_FossilInit(TH_INIT_DEFAULT | TH_INIT_FORCE_TCL);
  rc = Th_Eval(g.interp, 0, "tclInvoke info patchlevel", -1);
  zRc = Th_ReturnCodeName(rc, 0);
  blob_appendf(pOut, "TCL (Tcl %s, loaded %s: %s)\n",
    TCL_PATCH_LEVEL, zRc, Th_GetResult(g.interp, 0)
  );
#endif
#if defined(USE_TCL_STUBS)
  blob_append(pOut, "USE_TCL_STUBS\n", -1);
#endif
#if defined(FOSSIL_ENABLE_TCL_STUBS)
  blob_append(pOut, "TCL_STUBS\n", -1);
#endif
#if defined(FOSSIL_ENABLE_TCL_PRIVATE_STUBS)
  blob_append(pOut, "TCL_PRIVATE_STUBS\n", -1);
#endif
#if defined(FOSSIL_ENABLE_JSON)
  blob_appendf(pOut, "JSON (API %s)\n", FOSSIL_JSON_API_VERSION);
#endif
#if defined(BROKEN_MINGW_CMDLINE)
  blob_append(pOut, "MBCS_COMMAND_LINE\n", -1);
#else
  blob_append(pOut, "UNICODE_COMMAND_LINE\n", -1);
#endif
#if defined(FOSSIL_DYNAMIC_BUILD)
  blob_append(pOut, "DYNAMIC_BUILD\n", -1);
#else
  blob_append(pOut, "STATIC_BUILD\n", -1);
#endif
}

/*
** This function returns the user-agent string for Fossil, for
** use in HTTP(S) requests.
*/
const char *get_user_agent(){
  static const char version[] = "Fossil/" RELEASE_VERSION " (" MANIFEST_DATE
                                " " MANIFEST_VERSION ")";
  return version;
}


/*
** COMMAND: version
**
** Usage: %fossil version ?-verbose|-v?
**
** Print the source code version number for the fossil executable.
** If the verbose option is specified, additional details will
** be output about what optional features this binary was compiled
** with
*/
void version_cmd(void){
  int verboseFlag = 0;

  Blob versionInfo;
  fossil_print("This is fossil version %s\n", get_version());
  verboseFlag = find_option("verbose","v",0)!=0;
  int verboseFlag = find_option("verbose","v",0)!=0;

  /* We should be done with options.. */
  verify_all_options();
  get_version_blob(&versionInfo, verboseFlag);
  fossil_print("%s", blob_str(&versionInfo));

  if(!verboseFlag){
    return;
}


  }else{
#if defined(FOSSIL_ENABLE_TCL)
    int rc;
    const char *zRc;
#endif
    fossil_print("Compiled on %s %s using %s (%d-bit)\n",
                 __DATE__, __TIME__, COMPILER_NAME, sizeof(void*)*8);
    fossil_print("SQLite %s %.30s\n", sqlite3_libversion(), sqlite3_sourceid());
    fossil_print("Schema version %s\n", AUX_SCHEMA_MAX);
#if defined(FOSSIL_ENABLE_MINIZ)
    fossil_print("miniz %s, loaded %s\n", MZ_VERSION, mz_version());
/*
** WEBPAGE: test-version
**
** Show the version information for Fossil.
**
** Query parameters:
**
**    verbose       Show all available details.
*/
void test_version_page(void){
#else
    fossil_print("zlib %s, loaded %s\n", ZLIB_VERSION, zlibVersion());
#endif
#if defined(FOSSIL_ENABLE_SSL)
    fossil_print("SSL (%s)\n", SSLeay_version(SSLEAY_VERSION));
  Blob versionInfo;
#endif
#if defined(FOSSIL_ENABLE_LEGACY_MV_RM)
    fossil_print("LEGACY_MV_RM\n");
#endif
#if defined(FOSSIL_ENABLE_EXEC_REL_PATHS)
    fossil_print("EXEC_REL_PATHS\n");
#endif
#if defined(FOSSIL_ENABLE_TH1_DOCS)
    fossil_print("TH1_DOCS\n");
  int verboseFlag;
#endif
#if defined(FOSSIL_ENABLE_TH1_HOOKS)
    fossil_print("TH1_HOOKS\n");
#endif
#if defined(FOSSIL_ENABLE_TCL)
    Th_FossilInit(TH_INIT_DEFAULT | TH_INIT_FORCE_TCL);
    rc = Th_Eval(g.interp, 0, "tclInvoke info patchlevel", -1);
    zRc = Th_ReturnCodeName(rc, 0);
    fossil_print("TCL (Tcl %s, loaded %s: %s)\n",
      TCL_PATCH_LEVEL, zRc, Th_GetResult(g.interp, 0)
    );
#endif
#if defined(USE_TCL_STUBS)
    fossil_print("USE_TCL_STUBS\n");
#endif
#if defined(FOSSIL_ENABLE_TCL_STUBS)
    fossil_print("TCL_STUBS\n");
#endif
#if defined(FOSSIL_ENABLE_TCL_PRIVATE_STUBS)
    fossil_print("TCL_PRIVATE_STUBS\n");
#endif
#if defined(FOSSIL_ENABLE_JSON)
    fossil_print("JSON (API %s)\n", FOSSIL_JSON_API_VERSION);
#endif
#if defined(BROKEN_MINGW_CMDLINE)
    fossil_print("MBCS_COMMAND_LINE\n");
#else
    fossil_print("UNICODE_COMMAND_LINE\n");
#endif
#if defined(FOSSIL_DYNAMIC_BUILD)
    fossil_print("DYNAMIC_BUILD\n");
#else
    fossil_print("STATIC_BUILD\n");
#endif
  }

  login_check_credentials();
  if( !g.perm.Read ){ login_needed(g.anon.Read); return; }
  verboseFlag = P("verbose")!=0;
  style_header("Version Information");
  get_version_blob(&versionInfo, verboseFlag);
  @ <blockquote><pre>
  @ %h(blob_str(&versionInfo))
  @ </pre></blockquote>
  style_footer();
}


/*
** COMMAND: help
**
** Usage: %fossil help COMMAND

  const char *zMode;
  const char *zCur;

  if( g.zBaseURL!=0 ) return;
  if( zAltBase ){
    int i, n, c;
    g.zTop = g.zBaseURL = mprintf("%s", zAltBase);
    if( memcmp(g.zTop, "http://", 7)!=0 && memcmp(g.zTop,"https://",8)!=0 ){
    if( strncmp(g.zTop, "http://", 7)==0 ){
      /* it is HTTP, replace prefix with HTTPS. */
      g.zHttpsURL = mprintf("https://%s", &g.zTop[7]);
    }else if( strncmp(g.zTop, "https://", 8)==0 ){
      /* it is already HTTPS, use it. */
      g.zHttpsURL = mprintf("%s", g.zTop);
    }else{
      fossil_fatal("argument to --baseurl should be 'http://host/path'"
                   " or 'https://host/path'");
    }
    for(i=n=0; (c = g.zTop[i])!=0; i++){
      if( c=='/' ){
        n++;
        if( n==3 ){

** Options:
**   --baseurl URL       Use URL as the base (useful for reverse proxies)
**   --create            Create a new REPOSITORY if it does not already exist
**   --page PAGE         Start "ui" on PAGE.  ex: --page "timeline?y=ci"
**   --files GLOBLIST    Comma-separated list of glob patterns for static files
**   --localauth         enable automatic login for requests from localhost
**   --localhost         listen on 127.0.0.1 only (always true for "ui")
**   --https             signal a request coming in via https
**   --nojail            Drop root privileges but do not enter the chroot jail
**   --nossl             signal that no SSL connections are available
**   --notfound URL      Redirect
**   -P|--port TCPPORT   listen to request on port TCPPORT
**   --th-trace          trace TH1 execution (for debugging purposes)
**   --repolist          If REPOSITORY is dir, URL "/" lists repos.
**   --scgi              Accept SCGI rather than HTTP
**   --skin LABEL        Use override skin LABEL

  zNotFound = find_option("notfound", 0, 1);
  allowRepoList = find_option("repolist",0,0)!=0;
  zAltBase = find_option("baseurl", 0, 1);
  fCreate = find_option("create",0,0)!=0;
  if( find_option("scgi", 0, 0)!=0 ) flags |= HTTP_SERVER_SCGI;
  if( zAltBase ){
    set_base_url(zAltBase);
  }
  g.sslNotAvailable = find_option("nossl", 0, 0)!=0;
  if( find_option("https",0,0)!=0 ){
    cgi_replace_parameter("HTTPS","on");
  }else{
    /* without --https, defaults to not available. */
    g.sslNotAvailable = 1;
  }
  if( find_option("localhost", 0, 0)!=0 ){
    flags |= HTTP_SERVER_LOCALHOST;
  }

  /* We should be done with options.. */
  verify_all_options();

  }
  if( g.repositoryOpen ) flags |= HTTP_SERVER_HAD_REPOSITORY;
  if( g.localOpen ) flags |= HTTP_SERVER_HAD_CHECKOUT;
  db_close(1);
  if( cgi_http_server(iPort, mxPort, zBrowserCmd, zIpAddr, flags) ){
    fossil_fatal("unable to listen on TCP socket %d", iPort);
  }
  g.sslNotAvailable = 1;
  g.httpIn = stdin;
  g.httpOut = stdout;
  if( g.fHttpTrace || g.fSqlTrace ){
    fprintf(stderr, "====== SERVER pid %d =======\n", getpid());
  }
  g.cgiOutput = 1;
  find_server_repository(2, 0);

$(OBJDIR)/mkversion:	$(SRCDIR)/mkversion.c
	$(BCC) -o $(OBJDIR)/mkversion $(SRCDIR)/mkversion.c

$(OBJDIR)/codecheck1:	$(SRCDIR)/codecheck1.c
	$(BCC) -o $(OBJDIR)/codecheck1 $(SRCDIR)/codecheck1.c

# WARNING. DANGER. Running the test suite modifies the repository the
# build is done from, i.e. the checkout belongs to. Do not sync/push
# the repository after running the tests.
# Run the test suite. 
# Other flags that can be included in TESTFLAGS are:
#
#  -halt     Stop testing after the first failed test
#  -keep     Keep the temporary workspace for debugging
#  -prot     Write a detailed log of the tests to the file ./prot
#  -verbose  Include even more details in the output
#  -quiet    Hide most output from the terminal
#  -strict   Treat known bugs as failures
#
# TESTFLAGS can also include names of specific test files to limit
# the run to just those test cases.
#
test:	$(OBJDIR) $(APPNAME)
	$(TCLSH) $(SRCDIR)/../test/tester.tcl $(APPNAME)
	$(TCLSH) $(SRCDIR)/../test/tester.tcl $(APPNAME) -quiet $(TESTFLAGS)

$(OBJDIR)/VERSION.h:	$(SRCDIR)/../manifest.uuid $(SRCDIR)/../manifest $(SRCDIR)/../VERSION $(OBJDIR)/mkversion
	$(OBJDIR)/mkversion $(SRCDIR)/../manifest.uuid  $(SRCDIR)/../manifest  $(SRCDIR)/../VERSION >$(OBJDIR)/VERSION.h

# Setup the options used to compile the included SQLite library.
SQLITE_OPTIONS = -DNDEBUG=1 \
                 -DSQLITE_OMIT_LOAD_EXTENSION=1 \

# The FOSSIL_ENABLE_MINIZ variable may be undefined, set to 0, or
# set to 1.  If it is set to 1, the miniz library included in the
# source tree should be used; otherwise, it should not.
MINIZ_OBJ.0 =
MINIZ_OBJ.1 = $(OBJDIR)/miniz.o
MINIZ_OBJ.  = $(MINIZ_OBJ.0)

# The USE_LINENOISE variable may be undefined, set to 0, or set
# to 1. If it is set to 0, then there is no need to build or link
# the linenoise.o object.
LINENOISE_DEF.0 =
LINENOISE_DEF.1 = -DHAVE_LINENOISE
LINENOISE_DEF.  = $(LINENOISE_DEF.0)
LINENOISE_OBJ.0 =
LINENOISE_OBJ.1 = $(OBJDIR)/linenoise.o
LINENOISE_OBJ.  = $(LINENOISE_OBJ.0)


EXTRAOBJ = \
 $(SQLITE3_OBJ.$(USE_SYSTEM_SQLITE)) \
 $(MINIZ_OBJ.$(FOSSIL_ENABLE_MINIZ)) \
 $(OBJDIR)/linenoise.o \
 $(LINENOISE_OBJ.$(USE_LINENOISE)) \
 $(OBJDIR)/shell.o \
 $(OBJDIR)/th.o \
 $(OBJDIR)/th_lang.o \
 $(OBJDIR)/th_tcl.o \
 $(OBJDIR)/cson_amalgamation.o

$(OBJDIR)/zip.h:	$(OBJDIR)/headers

$(OBJDIR)/sqlite3.o:	$(SRCDIR)/sqlite3.c
	$(XTCC) $(SQLITE_OPTIONS) $(SQLITE_CFLAGS) -c $(SRCDIR)/sqlite3.c -o $@

$(OBJDIR)/shell.o:	$(SRCDIR)/shell.c $(SRCDIR)/sqlite3.h
	$(XTCC) $(SHELL_OPTIONS) $(SHELL_CFLAGS) -DHAVE_LINENOISE -c $(SRCDIR)/shell.c -o $@
	$(XTCC) $(SHELL_OPTIONS) $(SHELL_CFLAGS) $(LINENOISE_DEF.$(USE_LINENOISE)) -c $(SRCDIR)/shell.c -o $@

$(OBJDIR)/linenoise.o:	$(SRCDIR)/linenoise.c $(SRCDIR)/linenoise.h
	$(XTCC) -c $(SRCDIR)/linenoise.c -o $@

$(OBJDIR)/th.o:	$(SRCDIR)/th.c
	$(XTCC) -c $(SRCDIR)/th.c -o $@

$(OBJDIR)/mkversion:	$(SRCDIR)/mkversion.c
	$(BCC) -o $(OBJDIR)/mkversion $(SRCDIR)/mkversion.c

$(OBJDIR)/codecheck1:	$(SRCDIR)/codecheck1.c
	$(BCC) -o $(OBJDIR)/codecheck1 $(SRCDIR)/codecheck1.c

# WARNING. DANGER. Running the test suite modifies the repository the
# build is done from, i.e. the checkout belongs to. Do not sync/push
# the repository after running the tests.
# Run the test suite. 
# Other flags that can be included in TESTFLAGS are:
#
#  -halt     Stop testing after the first failed test
#  -keep     Keep the temporary workspace for debugging
#  -prot     Write a detailed log of the tests to the file ./prot
#  -verbose  Include even more details in the output
#  -quiet    Hide most output from the terminal
#  -strict   Treat known bugs as failures
#
# TESTFLAGS can also include names of specific test files to limit
# the run to just those test cases.
#
test:	$(OBJDIR) $(APPNAME)
	$(TCLSH) $(SRCDIR)/../test/tester.tcl $(APPNAME)
	$(TCLSH) $(SRCDIR)/../test/tester.tcl $(APPNAME) -quiet $(TESTFLAGS)

$(OBJDIR)/VERSION.h:	$(SRCDIR)/../manifest.uuid $(SRCDIR)/../manifest $(SRCDIR)/../VERSION $(OBJDIR)/mkversion
	$(OBJDIR)/mkversion $(SRCDIR)/../manifest.uuid \
		$(SRCDIR)/../manifest \
		$(SRCDIR)/../VERSION >$(OBJDIR)/VERSION.h

# Setup the options used to compile the included SQLite library.

# The FOSSIL_ENABLE_MINIZ variable may be undefined, set to 0, or
# set to 1.  If it is set to 1, the miniz library included in the
# source tree should be used; otherwise, it should not.
MINIZ_OBJ.0 =
MINIZ_OBJ.1 = $(OBJDIR)/miniz.o
MINIZ_OBJ.  = $(MINIZ_OBJ.0)

# The USE_LINENOISE variable may be undefined, set to 0, or set
# to 1. If it is set to 0, then there is no need to build or link
# the linenoise.o object.
LINENOISE_DEF.0 =
LINENOISE_DEF.1 = -DHAVE_LINENOISE
LINENOISE_DEF.  = $(LINENOISE_DEF.0)
LINENOISE_OBJ.0 =
LINENOISE_OBJ.1 = $(OBJDIR)/linenoise.o
LINENOISE_OBJ.  = $(LINENOISE_OBJ.0)
}]

writeln [string map [list <<<NEXT_LINE>>> \\] {
EXTRAOBJ = <<<NEXT_LINE>>>
 $(SQLITE3_OBJ.$(USE_SYSTEM_SQLITE)) <<<NEXT_LINE>>>
 $(MINIZ_OBJ.$(FOSSIL_ENABLE_MINIZ)) <<<NEXT_LINE>>>
 $(OBJDIR)/linenoise.o <<<NEXT_LINE>>>
 $(LINENOISE_OBJ.$(USE_LINENOISE)) <<<NEXT_LINE>>>
 $(OBJDIR)/shell.o <<<NEXT_LINE>>>
 $(OBJDIR)/th.o <<<NEXT_LINE>>>
 $(OBJDIR)/th_lang.o <<<NEXT_LINE>>>
 $(OBJDIR)/th_tcl.o <<<NEXT_LINE>>>
 $(OBJDIR)/cson_amalgamation.o
}]

  writeln "\$(OBJDIR)/$s.h:\t\$(OBJDIR)/headers\n"
}

writeln "\$(OBJDIR)/sqlite3.o:\t\$(SRCDIR)/sqlite3.c"
writeln "\t\$(XTCC) \$(SQLITE_OPTIONS) \$(SQLITE_CFLAGS) -c \$(SRCDIR)/sqlite3.c -o \$@\n"

writeln "\$(OBJDIR)/shell.o:\t\$(SRCDIR)/shell.c \$(SRCDIR)/sqlite3.h"
writeln "\t\$(XTCC) \$(SHELL_OPTIONS) \$(SHELL_CFLAGS) -DHAVE_LINENOISE -c \$(SRCDIR)/shell.c -o \$@\n"
writeln "\t\$(XTCC) \$(SHELL_OPTIONS) \$(SHELL_CFLAGS) \$(LINENOISE_DEF.\$(USE_LINENOISE)) -c \$(SRCDIR)/shell.c -o \$@\n"

writeln "\$(OBJDIR)/linenoise.o:\t\$(SRCDIR)/linenoise.c \$(SRCDIR)/linenoise.h"
writeln "\t\$(XTCC) -c \$(SRCDIR)/linenoise.c -o \$@\n"

writeln "\$(OBJDIR)/th.o:\t\$(SRCDIR)/th.c"
writeln "\t\$(XTCC) -c \$(SRCDIR)/th.c -o \$@\n"

endif

#### The directories where the OpenSSL include and library files are located.
#    The recommended usage here is to use the Sysinternals junction tool
#    to create a hard link between an "openssl-1.x" sub-directory of the
#    Fossil source code directory and the target OpenSSL source directory.
#
OPENSSLDIR = $(SRCDIR)/../compat/openssl-1.0.2e
OPENSSLDIR = $(SRCDIR)/../compat/openssl-1.0.2g
OPENSSLINCDIR = $(OPENSSLDIR)/include
OPENSSLLIBDIR = $(OPENSSLDIR)

#### Either the directory where the Tcl library is installed or the Tcl
#    source code directory resides (depending on the value of the macro
#    FOSSIL_TCL_SOURCE).  If this points to the Tcl install directory,
#    this directory must have "include" and "lib" sub-directories.  If

ifdef FOSSIL_BUILD_SSL
APPTARGETS += openssl
endif

$(APPNAME):	$(APPTARGETS) $(OBJDIR)/headers $(CODECHECK1) $(OBJ) $(EXTRAOBJ) $(OBJDIR)/fossil.o
	$(CODECHECK1) $(TRANS_SRC)
	$(TCC) -o $@ $(OBJ) $(EXTRAOBJ) $(LIB) $(OBJDIR)/fossil.o
	$(TCC) -o $@ $(OBJ) $(EXTRAOBJ) $(OBJDIR)/fossil.o $(LIB)

# This rule prevents make from using its default rules to try build
# an executable named "manifest" out of the file named "manifest.c"
#
$(SRCDIR)/../manifest:
	# noop

# Enable support for Windows XP with Visual Studio 201x?
!ifndef FOSSIL_ENABLE_WINXP
FOSSIL_ENABLE_WINXP = 0
!endif

!if $(FOSSIL_ENABLE_SSL)!=0
SSLDIR    = $(B)\compat\openssl-1.0.2e
SSLDIR    = $(B)\compat\openssl-1.0.2g
SSLINCDIR = $(SSLDIR)\inc32
!if $(FOSSIL_DYNAMIC_BUILD)!=0
SSLLIBDIR = $(SSLDIR)\out32dll
!else
SSLLIBDIR = $(SSLDIR)\out32
!endif
SSLLFLAGS = /nologo /opt:ref /debug

/*
** COMMAND: whatis*
** Usage: %fossil whatis NAME
**
** Resolve the symbol NAME into its canonical 40-character SHA1-hash
** artifact name and provide a description of what role that artifact
** plays.
**
** Options:
**
**    --type TYPE          Only find artifacts of TYPE (one of: 'ci', 't',
**                         'w', 'g', or 'e').
**    -v|--verbose         Provide extra information (such as the RID)
*/
void whatis_cmd(void){
  int rid;
  const char *zName;
  int verboseFlag;
  int i;
  const char *zType = 0;

/*
** The root program.  All variations call this core.
**
** INPUTS:
**   func   This is a pointer to a function taking three arguments
**            1. A pointer to anything.  Same as the "arg" parameter.
**            2. A pointer to the list of characters to be output
**               (Note, this list is NOT null terminated.)
**            3. An integer number of characters to be output.
**               (Note: This number might be zero.)
**
**   arg    This is the pointer to anything which will be passed as the
**   pBlob  This is the blob where the output will be built.
**          first argument to "func".  Use it for whatever you like.
**
**   fmt    This is the format string, as in the usual print.
**
**   ap     This is a pointer to a list of arguments.  Same as in
**          vfprint.
**
** OUTPUTS:

  }
  db_create_repository(g.argv[2]);
  db_open_repository(g.argv[2]);

  /* We should be done with options.. */
  verify_all_options();

  db_open_config(0);
  db_open_config(0, 0);
  db_begin_transaction();
  db_initial_setup(0, 0, 0);

  fossil_print("Reading files from directory \"%s\"...\n", g.argv[3]);
  recon_read_dir(g.argv[3]);
  fossil_print("\nBuilding the Fossil repository...\n");

**       t      Sort by text
**       n      Sort numerically
**       k      Sort by the data-sortkey property
**       x      This column is not sortable
**
** Capital letters mean sort in reverse order.
** If there are fewer characters in zColumnTypes[] than their are columns,
** the all extra columns assume type "t" (text).
** then all extra columns assume type "t" (text).
**
** The third parameter is the column that was initially sorted (using 1-based
** column numbers, like SQL).  Make this value 0 if none of the columns are
** initially sorted.  Make the value negative if the column is initially sorted
** in reverse order.
**
** Clicking on the same column header twice in a row inverts the sort.
*/
void output_table_sorting_javascript(
  const char *zTableId,      /* ID of table to sort */
  const char *zColumnTypes,  /* String for column types */
  int iInitSort              /* Initially sorted column. Leftmost is 1. 0 for NONE */
){
  @ <script>
  @ function SortableTable(tableEl,columnTypes,initSort){
  @   this.tbody = tableEl.getElementsByTagName('tbody');
  @   this.columnTypes = columnTypes;
  @   var ncols = tableEl.rows[0].cells.length;
  @   for(var i = columnTypes.length; i<=ncols; i++){this.columnTypes += 't';}
  @   this.sort = function (cell) {
  @     var column = cell.cellIndex;
  @     var sortFn;
  @     switch( cell.sortType ){
  if( strchr(zColumnTypes,'n') ){
    @       case "n": sortFn = this.sortNumeric;  break;
  }
  if( strchr(zColumnTypes,'N') ){
    @       case "N": sortFn = this.sortReverseNumeric;  break;
  }
  if( strchr(zColumnTypes,'t') ){
    @       case "t": sortFn = this.sortText;  break;
  @       case "t": sortFn = this.sortText;  break;
  }
  if( strchr(zColumnTypes,'T') ){
    @       case "T": sortFn = this.sortReverseText;  break;
  }
  if( strchr(zColumnTypes,'k') ){
    @       case "k": sortFn = this.sortKey;  break;
  }
  if( strchr(zColumnTypes,'K') ){

  @       }
  @       var hdrCell = this.hdrRow.cells[i];
  @       var clsName = hdrCell.className.replace(/\s*\bsort\s*\w+/, '');
  @       clsName += ' sort ' + sortType;
  @       hdrCell.className = clsName;
  @     }
  @   }
  if( strchr(zColumnTypes,'t') ){
    @   this.sortText = function(a,b) {
    @     var i = thisObject.sortIndex;
    @     aa = a.cells[i].textContent.replace(/^\W+/,'').toLowerCase();
    @     bb = b.cells[i].textContent.replace(/^\W+/,'').toLowerCase();
    @     if(aa<bb) return -1;
    @     if(aa==bb) return a.rowIndex-b.rowIndex;
    @     return 1;
    @   }
  @   this.sortText = function(a,b) {
  @     var i = thisObject.sortIndex;
  @     aa = a.cells[i].textContent.replace(/^\W+/,'').toLowerCase();
  @     bb = b.cells[i].textContent.replace(/^\W+/,'').toLowerCase();
  @     if(aa<bb) return -1;
  @     if(aa==bb) return a.rowIndex-b.rowIndex;
  @     return 1;
  @   }
  }
  if( strchr(zColumnTypes,'T') ){
    @   this.sortReverseText = function(a,b) {
    @     var i = thisObject.sortIndex;
    @     aa = a.cells[i].textContent.replace(/^\W+/,'').toLowerCase();
    @     bb = b.cells[i].textContent.replace(/^\W+/,'').toLowerCase();
    @     if(aa<bb) return +1;
    @     if(aa==bb) return a.rowIndex-b.rowIndex;

  const char *zQ = P("q");
  int go = P("go")!=0;
  login_check_credentials();
  if( !g.perm.Setup ){
    login_needed(0);
    return;
  }
  add_content_sql_commands(g.db);
  db_begin_transaction();
  style_header("Raw SQL Commands");
  @ <p><b>Caution:</b> There are no restrictions on the SQL that can be
  @ run by this page.  You can do serious and irrepairable damage to the
  @ repository.  Proceed with extreme caution.</p>
  @
  @ <p>Only the first statement in the entry box will be run.

** State information about the database connection is contained in an
** instance of the following structure.
*/
typedef struct ShellState ShellState;
struct ShellState {
  sqlite3 *db;           /* The database */
  int echoOn;            /* True to echo input commands */
  int autoExplain;       /* Automatically turn on .explain mode */
  int autoEQP;           /* Run EXPLAIN QUERY PLAN prior to seach SQL stmt */
  int statsOn;           /* True to display memory stats before each finalize */
  int scanstatsOn;       /* True to display scan stats before each finalize */
  int countChanges;      /* True to display change counts */
  int backslashOn;       /* Resolve C-style \x escapes in SQL input text */
  int outCount;          /* Revert to stdout when reaching zero */
  int cnt;               /* Number of records displayed so far */
  FILE *out;             /* Write results here */
  FILE *traceOut;        /* Output for sqlite3_trace() */
  int nErr;              /* Number of errors seen */
  int mode;              /* An output mode setting */
  int cMode;             /* temporary output mode for the current query */
  int normalMode;        /* Output mode before ".explain on" */
  int writableSchema;    /* True if PRAGMA writable_schema=ON */
  int showHeader;        /* True to show column names in List or Column mode */
  unsigned shellFlgs;    /* Various flags */
  char *zDestTable;      /* Name of destination table when MODE_Insert */
  char colSeparator[20]; /* Column separator character for several modes */
  char rowSeparator[20]; /* Row separator character for MODE_Ascii */
  int colWidth[100];     /* Requested width of each column when in column mode*/
  int actualWidth[100];  /* Actual width of each column */
  char nullValue[20];    /* The text to print when a NULL comes back from
                         ** the database */
  SavedModeInfo normalMode;/* Holds the mode just before .explain ON */
  char outfile[FILENAME_MAX]; /* Filename for *out */
  const char *zDbFilename;    /* name of the database file */
  char *zFreeOnClose;         /* Filename to free when closing */
  const char *zVfs;           /* Name of VFS to use */
  sqlite3_stmt *pStmt;   /* Current statement if any. */
  FILE *pLog;            /* Write log output here */
  int *aiIndent;         /* Array of indents used in MODE_Explain */

  char **azArg,    /* Text of each result column */
  char **azCol,    /* Column names */
  int *aiType      /* Column types */
){
  int i;
  ShellState *p = (ShellState*)pArg;

  switch( p->mode ){
  switch( p->cMode ){
    case MODE_Line: {
      int w = 5;
      if( azArg==0 ) break;
      for(i=0; i<nArg; i++){
        int len = strlen30(azCol[i] ? azCol[i] : "");
        if( len>w ) w = len;
      }
      if( p->cnt++>0 ) utf8_printf(p->out, "%s", p->rowSeparator);
      for(i=0; i<nArg; i++){
        utf8_printf(p->out,"%*s = %s%s", w, azCol[i],
                azArg[i] ? azArg[i] : p->nullValue, p->rowSeparator);
      }
      break;
    }
    case MODE_Explain:
    case MODE_Column: {
      static const int aExplainWidths[] = {4, 13, 4, 4, 4, 13, 2, 13};
      const int *colWidth;
      int showHdr;
      char *rowSep;
      if( p->cMode==MODE_Column ){
        colWidth = p->colWidth;
        showHdr = p->showHeader;
        rowSep = p->rowSeparator;
      }else{
        colWidth = aExplainWidths;
        showHdr = 1;
        rowSep = SEP_Row;
      }
      if( p->cnt++==0 ){
        for(i=0; i<nArg; i++){
          int w, n;
          if( i<ArraySize(p->colWidth) ){
            w = p->colWidth[i];
            w = colWidth[i];
          }else{
            w = 0;
          }
          if( w==0 ){
            w = strlen30(azCol[i] ? azCol[i] : "");
            if( w<10 ) w = 10;
            n = strlen30(azArg && azArg[i] ? azArg[i] : p->nullValue);
            if( w<n ) w = n;
          }
          if( i<ArraySize(p->actualWidth) ){
            p->actualWidth[i] = w;
          }
          if( p->showHeader ){
          if( showHdr ){
            if( w<0 ){
              utf8_printf(p->out,"%*.*s%s",-w,-w,azCol[i],
                      i==nArg-1 ? p->rowSeparator : "  ");
                      i==nArg-1 ? rowSep : "  ");
            }else{
              utf8_printf(p->out,"%-*.*s%s",w,w,azCol[i],
                      i==nArg-1 ? p->rowSeparator : "  ");
                      i==nArg-1 ? rowSep : "  ");
            }
          }
        }
        if( p->showHeader ){
        if( showHdr ){
          for(i=0; i<nArg; i++){
            int w;
            if( i<ArraySize(p->actualWidth) ){
               w = p->actualWidth[i];
               if( w<0 ) w = -w;
            }else{
               w = 10;
            }
            utf8_printf(p->out,"%-*.*s%s",w,w,
                   "----------------------------------------------------------"
                   "----------------------------------------------------------",
                    i==nArg-1 ? p->rowSeparator : "  ");
                    i==nArg-1 ? rowSep : "  ");
          }
        }
      }
      if( azArg==0 ) break;
      for(i=0; i<nArg; i++){
        int w;
        if( i<ArraySize(p->actualWidth) ){
           w = p->actualWidth[i];
        }else{
           w = 10;
        }
        if( p->mode==MODE_Explain && azArg[i] && strlen30(azArg[i])>w ){
        if( p->cMode==MODE_Explain && azArg[i] && strlen30(azArg[i])>w ){
          w = strlen30(azArg[i]);
        }
        if( i==1 && p->aiIndent && p->pStmt ){
          if( p->iIndent<p->nIndent ){
            utf8_printf(p->out, "%*.s", p->aiIndent[p->iIndent], "");
          }
          p->iIndent++;
        }
        if( w<0 ){
          utf8_printf(p->out,"%*.*s%s",-w,-w,
              azArg[i] ? azArg[i] : p->nullValue,
              i==nArg-1 ? p->rowSeparator : "  ");
              i==nArg-1 ? rowSep : "  ");
        }else{
          utf8_printf(p->out,"%-*.*s%s",w,w,
              azArg[i] ? azArg[i] : p->nullValue,
              i==nArg-1 ? p->rowSeparator : "  ");
              i==nArg-1 ? rowSep : "  ");
        }
      }
      break;
    }
    case MODE_Semi:
    case MODE_List: {
      if( p->cnt++==0 && p->showHeader ){
        for(i=0; i<nArg; i++){
          utf8_printf(p->out,"%s%s",azCol[i],
                  i==nArg-1 ? p->rowSeparator : p->colSeparator);
        }
      }
      if( azArg==0 ) break;
      for(i=0; i<nArg; i++){
        char *z = azArg[i];
        if( z==0 ) z = p->nullValue;
        utf8_printf(p->out, "%s", z);
        if( i<nArg-1 ){
          utf8_printf(p->out, "%s", p->colSeparator);
        }else if( p->mode==MODE_Semi ){
        }else if( p->cMode==MODE_Semi ){
          utf8_printf(p->out, ";%s", p->rowSeparator);
        }else{
          utf8_printf(p->out, "%s", p->rowSeparator);
        }
      }
      break;
    }

                           "NextIfOpen", "PrevIfOpen", 0 };
  const char *azYield[] = { "Yield", "SeekLT", "SeekGT", "RowSetRead",
                            "Rewind", 0 };
  const char *azGoto[] = { "Goto", 0 };

  /* Try to figure out if this is really an EXPLAIN statement. If this
  ** cannot be verified, return early.  */
  if( sqlite3_column_count(pSql)!=8 ){
    p->cMode = p->mode;
    return;
  }
  zSql = sqlite3_sql(pSql);
  if( zSql==0 ) return;
  for(z=zSql; *z==' ' || *z=='\t' || *z=='\n' || *z=='\f' || *z=='\r'; z++);
  if( sqlite3_strnicmp(z, "explain", 7) ) return;
  if( sqlite3_strnicmp(z, "explain", 7) ){
    p->cMode = p->mode;
    return;
  }

  for(iOp=0; SQLITE_ROW==sqlite3_step(pSql); iOp++){
    int i;
    int iAddr = sqlite3_column_int(pSql, 0);
    const char *zOp = (const char*)sqlite3_column_text(pSql, 1);

    /* Set p2 to the P2 field of the current opcode. Then, assuming that
    ** p2 is an instruction address, set variable p2op to the index of that
    ** instruction in the aiIndent[] array. p2 and p2op may be different if
    ** the current instruction is part of a sub-program generated by an
    ** SQL trigger or foreign key.  */
    int p2 = sqlite3_column_int(pSql, 3);
    int p2op = (p2 + (iOp-iAddr));

    /* Grow the p->aiIndent array as required */
    if( iOp>=nAlloc ){
      if( iOp==0 ){
        /* Do further verfication that this is explain output.  Abort if
        ** it is not */
        static const char *explainCols[] = {
           "addr", "opcode", "p1", "p2", "p3", "p4", "p5", "comment" };
        int jj;
        for(jj=0; jj<ArraySize(explainCols); jj++){
          if( strcmp(sqlite3_column_name(pSql,jj),explainCols[jj])!=0 ){
            p->cMode = p->mode;
            sqlite3_reset(pSql);
            return;
          }
        }
      }
      nAlloc += 100;
      p->aiIndent = (int*)sqlite3_realloc64(p->aiIndent, nAlloc*sizeof(int));
      abYield = (int*)sqlite3_realloc64(abYield, nAlloc*sizeof(int));
    }
    abYield[iOp] = str_in_array(zOp, azYield);
    p->aiIndent[iOp] = 0;
    p->nIndent = iOp+1;

            utf8_printf(pArg->out,"%s\n", sqlite3_column_text(pExplain, 3));
          }
        }
        sqlite3_finalize(pExplain);
        sqlite3_free(zEQP);
      }

      if( pArg ){
        pArg->cMode = pArg->mode;
        if( pArg->autoExplain
         && sqlite3_column_count(pStmt)==8
         && sqlite3_strlike("%EXPLAIN%", sqlite3_sql(pStmt),0)==0
        ){
          pArg->cMode = MODE_Explain;
        }
      
      /* If the shell is currently in ".explain" mode, gather the extra
      ** data required to add indents to the output.*/
      if( pArg && pArg->mode==MODE_Explain ){
        explain_data_prepare(pArg, pStmt);
        /* If the shell is currently in ".explain" mode, gather the extra
        ** data required to add indents to the output.*/
        if( pArg->cMode==MODE_Explain ){
          explain_data_prepare(pArg, pStmt);
        }
      }

      /* perform the first step.  this will tell us if we
      ** have a result set or not and how wide it is.
      */
      rc = sqlite3_step(pStmt);
      /* if we have a result set... */

            for(i=0; i<nCol; i++){
              azCols[i] = (char *)sqlite3_column_name(pStmt, i);
            }
            do{
              /* extract the data and data types */
              for(i=0; i<nCol; i++){
                aiTypes[i] = x = sqlite3_column_type(pStmt, i);
                if( x==SQLITE_BLOB && pArg && pArg->mode==MODE_Insert ){
                if( x==SQLITE_BLOB && pArg && pArg->cMode==MODE_Insert ){
                  azVals[i] = "";
                }else{
                  azVals[i] = (char*)sqlite3_column_text(pStmt, i);
                }
                if( !azVals[i] && (aiTypes[i]!=SQLITE_NULL) ){
                  rc = SQLITE_NOMEM;
                  break; /* from for */

  ".dbinfo ?DB?           Show status information about the database\n"
  ".dump ?TABLE? ...      Dump the database in an SQL text format\n"
  "                         If TABLE specified, only dump tables matching\n"
  "                         LIKE pattern TABLE.\n"
  ".echo on|off           Turn command echo on or off\n"
  ".eqp on|off            Enable or disable automatic EXPLAIN QUERY PLAN\n"
  ".exit                  Exit this program\n"
  ".explain ?on|off?      Turn output mode suitable for EXPLAIN on or off.\n"
  ".explain ?on|off|auto? Turn EXPLAIN output mode on or off or to automatic\n"
  "                         With no args, it turns EXPLAIN on.\n"
  ".fullschema            Show schema and the content of sqlite_stat tables\n"
  ".headers on|off        Turn display of headers on or off\n"
  ".help                  Show this message\n"
  ".import FILE TABLE     Import data from FILE into TABLE\n"
  ".indexes ?TABLE?       Show names of all indexes\n"
  "                         If TABLE specified, only show indexes for tables\n"
  "                         matching LIKE pattern TABLE.\n"

  ".tables ?TABLE?        List names of tables\n"
  "                         If TABLE specified, only list tables matching\n"
  "                         LIKE pattern TABLE.\n"
  ".timeout MS            Try opening locked tables for MS milliseconds\n"
  ".timer on|off          Turn SQL timer on or off\n"
  ".trace FILE|off        Output each SQL statement as it is run\n"
  ".vfsinfo ?AUX?         Information about the top-level VFS\n"
  ".vfslist               List all available VFSes\n"
  ".vfsname ?AUX?         Print the name of the VFS stack\n"
  ".width NUM1 NUM2 ...   Set column widths for \"column\" mode\n"
  "                         Negative values right-justify\n"
;

/* Forward reference */
static int process_input(ShellState *p, FILE *in);

  if( c=='d' && n>1 && strncmp(azArg[0], "databases", n)==0 ){
    ShellState data;
    char *zErrMsg = 0;
    open_db(p, 0);
    memcpy(&data, p, sizeof(data));
    data.showHeader = 1;
    data.mode = MODE_Column;
    data.cMode = data.mode = MODE_Column;
    data.colWidth[0] = 3;
    data.colWidth[1] = 15;
    data.colWidth[2] = 58;
    data.cnt = 0;
    sqlite3_exec(p->db, "PRAGMA database_list; ", callback, &data, &zErrMsg);
    if( zErrMsg ){
      utf8_printf(stderr,"Error: %s\n", zErrMsg);

  if( c=='e' && strncmp(azArg[0], "exit", n)==0 ){
    if( nArg>1 && (rc = (int)integerValue(azArg[1]))!=0 ) exit(rc);
    rc = 2;
  }else

  if( c=='e' && strncmp(azArg[0], "explain", n)==0 ){
    int val = nArg>=2 ? booleanValue(azArg[1]) : 1;
    if(val == 1) {
      if(!p->normalMode.valid) {
        p->normalMode.valid = 1;
        p->normalMode.mode = p->mode;
        p->normalMode.showHeader = p->showHeader;
    int val = 1;
    if( nArg>=2 ){
      if( strcmp(azArg[1],"auto")==0 ){
        val = 99;
      }else{
        val =  booleanValue(azArg[1]);
        memcpy(p->normalMode.colWidth,p->colWidth,sizeof(p->colWidth));
      }
      /* We could put this code under the !p->explainValid
      ** condition so that it does not execute if we are already in
      ** explain mode. However, always executing it allows us an easy
      ** was to reset to explain mode in case the user previously
      ** did an .explain followed by a .width, .mode or .header
      ** command.
    }
    if( val==1 && p->mode!=MODE_Explain ){
      p->normalMode = p->mode;
      */
      p->mode = MODE_Explain;
      p->showHeader = 1;
      p->autoExplain = 0;
      memset(p->colWidth,0,sizeof(p->colWidth));
      p->colWidth[0] = 4;                  /* addr */
      p->colWidth[1] = 13;                 /* opcode */
      p->colWidth[2] = 4;                  /* P1 */
      p->colWidth[3] = 4;                  /* P2 */
      p->colWidth[4] = 4;                  /* P3 */
      p->colWidth[5] = 13;                 /* P4 */
      p->colWidth[6] = 2;                  /* P5 */
      p->colWidth[7] = 13;                  /* Comment */
    }else if (p->normalMode.valid) {
      p->normalMode.valid = 0;
      p->mode = p->normalMode.mode;
      p->showHeader = p->normalMode.showHeader;
    }else if( val==0 ){
      if( p->mode==MODE_Explain ) p->mode = p->normalMode;
      p->autoExplain = 0;
    }else if( val==99 ){
      if( p->mode==MODE_Explain ) p->mode = p->normalMode;
      p->autoExplain = 1;
      memcpy(p->colWidth,p->normalMode.colWidth,sizeof(p->colWidth));
    }
  }else

  if( c=='f' && strncmp(azArg[0], "fullschema", n)==0 ){
    ShellState data;
    char *zErrMsg = 0;
    int doStats = 0;
    if( nArg!=1 ){
      raw_printf(stderr, "Usage: .fullschema\n");
      rc = 1;
      goto meta_command_exit;
    }
    open_db(p, 0);
    memcpy(&data, p, sizeof(data));
    data.showHeader = 0;
    data.mode = MODE_Semi;
    data.cMode = data.mode = MODE_Semi;
    rc = sqlite3_exec(p->db,
       "SELECT sql FROM"
       "  (SELECT sql sql, type type, tbl_name tbl_name, name name, rowid x"
       "     FROM sqlite_master UNION ALL"
       "   SELECT sql, type, tbl_name, name, rowid FROM sqlite_temp_master) "
       "WHERE type!='meta' AND sql NOTNULL AND name NOT LIKE 'sqlite_%' "
       "ORDER BY rowid",

    }
    if( doStats==0 ){
      raw_printf(p->out, "/* No STAT tables available */\n");
    }else{
      raw_printf(p->out, "ANALYZE sqlite_master;\n");
      sqlite3_exec(p->db, "SELECT 'ANALYZE sqlite_master'",
                   callback, &data, &zErrMsg);
      data.mode = MODE_Insert;
      data.cMode = data.mode = MODE_Insert;
      data.zDestTable = "sqlite_stat1";
      shell_exec(p->db, "SELECT * FROM sqlite_stat1",
                 shell_callback, &data,&zErrMsg);
      data.zDestTable = "sqlite_stat3";
      shell_exec(p->db, "SELECT * FROM sqlite_stat3",
                 shell_callback, &data,&zErrMsg);
      data.zDestTable = "sqlite_stat4";

  if( c=='i' && (strncmp(azArg[0], "indices", n)==0
                 || strncmp(azArg[0], "indexes", n)==0) ){
    ShellState data;
    char *zErrMsg = 0;
    open_db(p, 0);
    memcpy(&data, p, sizeof(data));
    data.showHeader = 0;
    data.mode = MODE_List;
    data.cMode = data.mode = MODE_List;
    if( nArg==1 ){
      rc = sqlite3_exec(p->db,
        "SELECT name FROM sqlite_master "
        "WHERE type='index' AND name NOT LIKE 'sqlite_%' "
        "UNION ALL "
        "SELECT name FROM sqlite_temp_master "
        "WHERE type='index' "

      sqlite3_snprintf(sizeof(p->colSeparator), p->colSeparator, SEP_Unit);
      sqlite3_snprintf(sizeof(p->rowSeparator), p->rowSeparator, SEP_Record);
    }else {
      raw_printf(stderr, "Error: mode should be one of: "
         "ascii column csv html insert line list tabs tcl\n");
      rc = 1;
    }
    p->cMode = p->mode;
  }else

  if( c=='n' && strncmp(azArg[0], "nullvalue", n)==0 ){
    if( nArg==2 ){
      sqlite3_snprintf(sizeof(p->nullValue), p->nullValue,
                       "%.*s", (int)ArraySize(p->nullValue)-1, azArg[1]);
    }else{

  if( c=='s' && strncmp(azArg[0], "schema", n)==0 ){
    ShellState data;
    char *zErrMsg = 0;
    open_db(p, 0);
    memcpy(&data, p, sizeof(data));
    data.showHeader = 0;
    data.mode = MODE_Semi;
    data.cMode = data.mode = MODE_Semi;
    if( nArg==2 ){
      int i;
      for(i=0; azArg[1][i]; i++) azArg[1][i] = ToLower(azArg[1][i]);
      if( strcmp(azArg[1],"sqlite_master")==0 ){
        char *new_argv[2], *new_colv[2];
        new_argv[0] = "CREATE TABLE sqlite_master (\n"
                      "  type text,\n"

    if( nArg!=1 ){
      raw_printf(stderr, "Usage: .show\n");
      rc = 1;
      goto meta_command_exit;
    }
    utf8_printf(p->out, "%12.12s: %s\n","echo", p->echoOn ? "on" : "off");
    utf8_printf(p->out, "%12.12s: %s\n","eqp", p->autoEQP ? "on" : "off");
    utf8_printf(p->out,"%9.9s: %s\n","explain",p->normalMode.valid?"on":"off");
    utf8_printf(p->out, "%12.12s: %s\n","explain",
         p->mode==MODE_Explain ? "on" : p->autoExplain ? "auto" : "off");
    utf8_printf(p->out,"%12.12s: %s\n","headers", p->showHeader ? "on" : "off");
    utf8_printf(p->out, "%12.12s: %s\n","mode", modeDescr[p->mode]);
    utf8_printf(p->out, "%12.12s: ", "nullvalue");
      output_c_string(p->out, p->nullValue);
      raw_printf(p->out, "\n");
    utf8_printf(p->out,"%12.12s: %s\n","output",
            strlen30(p->outfile) ? p->outfile : "stdout");

        utf8_printf(p->out, "vfs.zName      = \"%s\"\n", pVfs->zName);
        raw_printf(p->out, "vfs.iVersion   = %d\n", pVfs->iVersion);
        raw_printf(p->out, "vfs.szOsFile   = %d\n", pVfs->szOsFile);
        raw_printf(p->out, "vfs.mxPathname = %d\n", pVfs->mxPathname);
      }
    }
  }else

  if( c=='v' && strncmp(azArg[0], "vfslist", n)==0 ){
    sqlite3_vfs *pVfs;
    sqlite3_vfs *pCurrent = 0;
    if( p->db ){
      sqlite3_file_control(p->db, "main", SQLITE_FCNTL_VFS_POINTER, &pCurrent);
    }
    for(pVfs=sqlite3_vfs_find(0); pVfs; pVfs=pVfs->pNext){
      utf8_printf(p->out, "vfs.zName      = \"%s\"%s\n", pVfs->zName,
           pVfs==pCurrent ? "  <--- CURRENT" : "");
      raw_printf(p->out, "vfs.iVersion   = %d\n", pVfs->iVersion);
      raw_printf(p->out, "vfs.szOsFile   = %d\n", pVfs->szOsFile);
      raw_printf(p->out, "vfs.mxPathname = %d\n", pVfs->mxPathname);
      if( pVfs->pNext ){
        raw_printf(p->out, "-----------------------------------\n");
      }
    }
  }else

  if( c=='v' && strncmp(azArg[0], "vfsname", n)==0 ){
    const char *zDbName = nArg==2 ? azArg[1] : "main";
    char *zVfsName = 0;
    if( p->db ){
      sqlite3_file_control(p->db, zDbName, SQLITE_FCNTL_VFSNAME, &zVfsName);
      if( zVfsName ){

}

/*
** Initialize the state information in data
*/
static void main_init(ShellState *data) {
  memset(data, 0, sizeof(*data));
  data->normalMode = data->cMode = data->mode = MODE_List;
  data->mode = MODE_List;
  data->autoExplain = 1;
  memcpy(data->colSeparator,SEP_Column, 2);
  memcpy(data->rowSeparator,SEP_Row, 2);
  data->showHeader = 0;
  data->shellFlgs = SHFLG_Lookaside;
  sqlite3_config(SQLITE_CONFIG_URI, 1);
  sqlite3_config(SQLITE_CONFIG_LOG, shellLog, data);
  sqlite3_config(SQLITE_CONFIG_MULTITHREAD);

        }
      }
    }else{
      utf8_printf(stderr,"%s: Error: unknown option: %s\n", Argv0, z);
      raw_printf(stderr,"Use -help for a list of options.\n");
      return 1;
    }
    data.cMode = data.mode;
  }

  if( !readStdin ){
    /* Run all arguments that do not begin with '-' as if they were separate
    ** command-line inputs, except for the argToSkip argument which contains
    ** the database filename.
    */

  g.db = db;
  return SQLITE_OK;
}

/*
** COMMAND: sqlite3
**
** Usage: %fossil sqlite3 ?DATABASE? ?OPTIONS?
** Usage: %fossil sqlite3 ?FOSSIL_OPTS? ?DATABASE? ?SHELL_OPTS?
**
** Run the standalone sqlite3 command-line shell on DATABASE with OPTIONS.
** Run the standalone sqlite3 command-line shell on DATABASE with SHELL_OPTS.
** If DATABASE is omitted, then the repository that serves the working
** directory is opened.  See https://www.sqlite.org/cli.html for additional
** information.
**
** Fossil Options:
**
**    --no-repository           Skip opening the repository database.
**
** WARNING:  Careless use of this command can corrupt a Fossil repository
** in ways that are unrecoverable.  Be sure you know what you are doing before
** running any SQL commands that modifies the repository database.
**
** The following extensions to the usual SQLite commands are provided:
**
**    content(X)                Return the contenxt of artifact X.  X can be a

**
** Usage example for files_of_checkin:
**
**     CREATE VIRTUAL TABLE temp.foci USING files_of_checkin;
**     SELECT * FROM foci WHERE checkinID=symbolic_name_to_rid('trunk');
*/
void cmd_sqlite3(void){
  int noRepository;
  extern int sqlite3_shell(int, char**);
  noRepository = find_option("no-repository", 0, 0)!=0;
  if( !noRepository ){
  db_find_and_open_repository(OPEN_ANY_SCHEMA, 0);
  db_close(1);
    db_find_and_open_repository(OPEN_ANY_SCHEMA, 0);
  }
  fossil_close(1, noRepository);
  sqlite3_shutdown();
  sqlite3_shell(g.argc-1, g.argv+1);
  sqlite3_cancel_auto_extension((void(*)(void))sqlcmd_autoinit);
  g.db = 0;
  g.zMainDbType = 0;
  g.repositoryOpen = 0;
  fossil_close(0, noRepository);
  g.localOpen = 0;
}

/*
** This routine is called by the patched sqlite3 command-line shell in order
** to load the name and database connection for the open Fossil database.
*/
void fossil_open(const char **pzRepoName){
  sqlite3_auto_extension((void(*)(void))sqlcmd_autoinit);
  *pzRepoName = g.zRepositoryName;
}

/*
** This routine closes the Fossil databases and/or invalidates the global
** state variables that keep track of them.
*/
void fossil_close(int bDb, int noRepository){
  if( bDb ) db_close(1);
  if( noRepository ) g.zRepositoryName = 0;
  g.db = 0;
  g.zMainDbType = 0;
  g.repositoryOpen = 0;
  g.localOpen = 0;
}

/******************************************************************************
** This file is an amalgamation of many separate C source files from SQLite
** version 3.10.0.  By combining all the individual C code files into this 
** version 3.11.0.  By combining all the individual C code files into this 
** single large file, the entire code can be compiled as a single translation
** unit.  This allows many compilers to do optimizations that would not be
** possible if the files were compiled separately.  Performance improvements
** of 5% or more are commonly seen when SQLite is compiled as a single
** translation unit.
**
** This file is all you need to compile SQLite.  To use SQLite in other

#define SQLITE_HOMEGROWN_RECURSIVE_MUTEX 1
#define SQLITE_OMIT_LOAD_EXTENSION 1
#define SQLITE_ENABLE_LOCKING_STYLE 0
#define HAVE_UTIME 1
#else
/* This is not VxWorks. */
#define OS_VXWORKS 0
#define HAVE_FCHOWN 1
#define HAVE_READLINK 1
#define HAVE_LSTAT 1
#endif /* defined(_WRS_KERNEL) */

/************** End of vxworks.h *********************************************/
/************** Continuing where we left off in sqliteInt.h ******************/

/*
** These #defines should enable >2GB file support on POSIX if the

** string contains the date and time of the check-in (UTC) and an SHA1
** hash of the entire source tree.
**
** See also: [sqlite3_libversion()],
** [sqlite3_libversion_number()], [sqlite3_sourceid()],
** [sqlite_version()] and [sqlite_source_id()].
*/
#define SQLITE_VERSION        "3.10.0"
#define SQLITE_VERSION_NUMBER 3010000
#define SQLITE_SOURCE_ID      "2016-01-06 11:01:07 fd0a50f0797d154fefff724624f00548b5320566"
#define SQLITE_VERSION        "3.11.0"
#define SQLITE_VERSION_NUMBER 3011000
#define SQLITE_SOURCE_ID      "2016-02-15 17:29:24 3d862f207e3adc00f78066799ac5a8c282430a5f"

/*
** CAPI3REF: Run-Time Library Version Numbers
** KEYWORDS: sqlite3_version, sqlite3_sourceid
**
** These interfaces provide the same information as the [SQLITE_VERSION],
** [SQLITE_VERSION_NUMBER], and [SQLITE_SOURCE_ID] C preprocessor macros

** ^If an error occurs while evaluating the SQL statements passed into
** sqlite3_exec(), then execution of the current statement stops and
** subsequent statements are skipped.  ^If the 5th parameter to sqlite3_exec()
** is not NULL then any error message is written into memory obtained
** from [sqlite3_malloc()] and passed back through the 5th parameter.
** To avoid memory leaks, the application should invoke [sqlite3_free()]
** on error message strings returned through the 5th parameter of
** of sqlite3_exec() after the error message string is no longer needed.
** sqlite3_exec() after the error message string is no longer needed.
** ^If the 5th parameter to sqlite3_exec() is not NULL and no errors
** occur, then sqlite3_exec() sets the pointer in its 5th parameter to
** NULL before returning.
**
** ^If an sqlite3_exec() callback returns non-zero, the sqlite3_exec()
** routine returns SQLITE_ABORT without invoking the callback again and
** without running any subsequent SQL statements.

** for the nominated database. Allocating database file space in large
** chunks (say 1MB at a time), may reduce file-system fragmentation and
** improve performance on some systems.
**
** <li>[[SQLITE_FCNTL_FILE_POINTER]]
** The [SQLITE_FCNTL_FILE_POINTER] opcode is used to obtain a pointer
** to the [sqlite3_file] object associated with a particular database
** connection.  See the [sqlite3_file_control()] documentation for
** additional information.
** connection.  See also [SQLITE_FCNTL_JOURNAL_POINTER].
**
** <li>[[SQLITE_FCNTL_JOURNAL_POINTER]]
** The [SQLITE_FCNTL_JOURNAL_POINTER] opcode is used to obtain a pointer
** to the [sqlite3_file] object associated with the journal file (either
** the [rollback journal] or the [write-ahead log]) for a particular database
** connection.  See also [SQLITE_FCNTL_FILE_POINTER].
**
** <li>[[SQLITE_FCNTL_SYNC_OMITTED]]
** No longer in use.
**
** <li>[[SQLITE_FCNTL_SYNC]]
** The [SQLITE_FCNTL_SYNC] opcode is generated internally by SQLite and
** sent to the VFS immediately before the xSync method is invoked on a

#define SQLITE_FCNTL_SYNC                   21
#define SQLITE_FCNTL_COMMIT_PHASETWO        22
#define SQLITE_FCNTL_WIN32_SET_HANDLE       23
#define SQLITE_FCNTL_WAL_BLOCK              24
#define SQLITE_FCNTL_ZIPVFS                 25
#define SQLITE_FCNTL_RBU                    26
#define SQLITE_FCNTL_VFS_POINTER            27
#define SQLITE_FCNTL_JOURNAL_POINTER        28

/* deprecated names */
#define SQLITE_GET_LOCKPROXYFILE      SQLITE_FCNTL_GET_LOCKPROXYFILE
#define SQLITE_SET_LOCKPROXYFILE      SQLITE_FCNTL_SET_LOCKPROXYFILE
#define SQLITE_LAST_ERRNO             SQLITE_FCNTL_LAST_ERRNO

** sqlite3_libversion_number() returns a value greater than or equal to
** 3009000.
*/
struct sqlite3_index_info {
  /* Inputs */
  int nConstraint;           /* Number of entries in aConstraint */
  struct sqlite3_index_constraint {
     int iColumn;              /* Column on left-hand side of constraint */
     int iColumn;              /* Column constrained.  -1 for ROWID */
     unsigned char op;         /* Constraint operator */
     unsigned char usable;     /* True if this constraint is usable */
     int iTermOffset;          /* Used internally - xBestIndex should ignore */
  } *aConstraint;            /* Table of WHERE clause constraints */
  int nOrderBy;              /* Number of terms in the ORDER BY clause */
  struct sqlite3_index_orderby {
     int iColumn;              /* Column number */

**   *pnToken to the number of tokens in column iCol of the current row.
**
**   If parameter iCol is greater than or equal to the number of columns
**   in the table, SQLITE_RANGE is returned. Or, if an error occurs (e.g.
**   an OOM condition or IO error), an appropriate SQLite error code is 
**   returned.
**
**   This function may be quite inefficient if used with an FTS5 table
**   created with the "columnsize=0" option.
**
** xColumnText:
**   This function attempts to retrieve the text of column iCol of the
**   current document. If successful, (*pz) is set to point to a buffer
**   containing the text in utf-8 encoding, (*pn) is set to the size in bytes
**   (not characters) of the buffer and SQLITE_OK is returned. Otherwise,
**   if an error occurs, an SQLite error code is returned and the final values
**   of (*pz) and (*pn) are undefined.
**
** xPhraseCount:
**   Returns the number of phrases in the current query expression.
**
** xPhraseSize:
**   Returns the number of tokens in phrase iPhrase of the query. Phrases
**   are numbered starting from zero.
**
** xInstCount:
**   Set *pnInst to the total number of occurrences of all phrases within
**   the query within the current row. Return SQLITE_OK if successful, or
**   an error code (i.e. SQLITE_NOMEM) if an error occurs.
**
**   This API can be quite slow if used with an FTS5 table created with the
**   "detail=none" or "detail=column" option. If the FTS5 table is created 
**   with either "detail=none" or "detail=column" and "content=" option 
**   (i.e. if it is a contentless table), then this API always returns 0.
**
** xInst:
**   Query for the details of phrase match iIdx within the current row.
**   Phrase matches are numbered starting from zero, so the iIdx argument
**   should be greater than or equal to zero and smaller than the value
**   output by xInstCount().
**
**   Usually, output parameter *piPhrase is set to the phrase number, *piCol
**   to the column in which it occurs and *piOff the token offset of the
**   first token of the phrase. The exception is if the table was created
**   with the offsets=0 option specified. In this case *piOff is always
**   set to -1.
**
**   Returns SQLITE_OK if successful, or an error code (i.e. SQLITE_NOMEM) 
**   if an error occurs.
**
**   This API can be quite slow if used with an FTS5 table created with the
**   "detail=none" or "detail=column" option. 
**
** xRowid:
**   Returns the rowid of the current row.
**
** xTokenize:
**   Tokenize text using the tokenizer belonging to the FTS5 table.
**

**   xInstCount/xInst APIs. While the xInstCount/xInst APIs are more convenient
**   to use, this API may be faster under some circumstances. To iterate 
**   through instances of phrase iPhrase, use the following code:
**
**       Fts5PhraseIter iter;
**       int iCol, iOff;
**       for(pApi->xPhraseFirst(pFts, iPhrase, &iter, &iCol, &iOff);
**           iOff>=0;
**           iCol>=0;
**           pApi->xPhraseNext(pFts, &iter, &iCol, &iOff)
**       ){
**         // An instance of phrase iPhrase at offset iOff of column iCol
**       }
**
**   The Fts5PhraseIter structure is defined above. Applications should not
**   modify this structure directly - it should only be used as shown above
**   with the xPhraseFirst() and xPhraseNext() API methods.
**   with the xPhraseFirst() and xPhraseNext() API methods (and by
**   xPhraseFirstColumn() and xPhraseNextColumn() as illustrated below).
**
**   This API can be quite slow if used with an FTS5 table created with the
**   "detail=none" or "detail=column" option. If the FTS5 table is created 
**   with either "detail=none" or "detail=column" and "content=" option 
**   (i.e. if it is a contentless table), then this API always iterates
**   through an empty set (all calls to xPhraseFirst() set iCol to -1).
**
** xPhraseNext()
**   See xPhraseFirst above.
**
** xPhraseFirstColumn()
**   This function and xPhraseNextColumn() are similar to the xPhraseFirst()
**   and xPhraseNext() APIs described above. The difference is that instead
**   of iterating through all instances of a phrase in the current row, these
**   APIs are used to iterate through the set of columns in the current row
**   that contain one or more instances of a specified phrase. For example:
**
**       Fts5PhraseIter iter;
**       int iCol;
**       for(pApi->xPhraseFirstColumn(pFts, iPhrase, &iter, &iCol);
**           iCol>=0;
**           pApi->xPhraseNextColumn(pFts, &iter, &iCol)
**       ){
**         // Column iCol contains at least one instance of phrase iPhrase
**       }
**
**   This API can be quite slow if used with an FTS5 table created with the
**   "detail=none" option. If the FTS5 table is created with either 
**   "detail=none" "content=" option (i.e. if it is a contentless table), 
**   then this API always iterates through an empty set (all calls to 
**   xPhraseFirstColumn() set iCol to -1).
**
**   The information accessed using this API and its companion
**   xPhraseFirstColumn() may also be obtained using xPhraseFirst/xPhraseNext
**   (or xInst/xInstCount). The chief advantage of this API is that it is
**   significantly more efficient than those alternatives when used with
**   "detail=column" tables.  
**
** xPhraseNextColumn()
**   See xPhraseFirstColumn above.
*/
struct Fts5ExtensionApi {
  int iVersion;                   /* Currently always set to 1 */
  int iVersion;                   /* Currently always set to 3 */

  void *(*xUserData)(Fts5Context*);

  int (*xColumnCount)(Fts5Context*);
  int (*xRowCount)(Fts5Context*, sqlite3_int64 *pnRow);
  int (*xColumnTotalSize)(Fts5Context*, int iCol, sqlite3_int64 *pnToken);

  int (*xQueryPhrase)(Fts5Context*, int iPhrase, void *pUserData,
    int(*)(const Fts5ExtensionApi*,Fts5Context*,void*)
  );
  int (*xSetAuxdata)(Fts5Context*, void *pAux, void(*xDelete)(void*));
  void *(*xGetAuxdata)(Fts5Context*, int bClear);

  void (*xPhraseFirst)(Fts5Context*, int iPhrase, Fts5PhraseIter*, int*, int*);
  int (*xPhraseFirst)(Fts5Context*, int iPhrase, Fts5PhraseIter*, int*, int*);
  void (*xPhraseNext)(Fts5Context*, Fts5PhraseIter*, int *piCol, int *piOff);

  int (*xPhraseFirstColumn)(Fts5Context*, int iPhrase, Fts5PhraseIter*, int*);
  void (*xPhraseNextColumn)(Fts5Context*, Fts5PhraseIter*, int *piCol);
};

/* 
** CUSTOM AUXILIARY FUNCTIONS
*************************************************************************/

/*************************************************************************

# define ALWAYS(X)      ((X)?1:(assert(0),0))
# define NEVER(X)       ((X)?(assert(0),1):0)
#else
# define ALWAYS(X)      (X)
# define NEVER(X)       (X)
#endif

/*
** Some malloc failures are only possible if SQLITE_TEST_REALLOC_STRESS is
** defined.  We need to defend against those failures when testing with
** SQLITE_TEST_REALLOC_STRESS, but we don't want the unreachable branches
** during a normal build.  The following macro can be used to disable tests
** that are always false except when SQLITE_TEST_REALLOC_STRESS is set.
*/
#if defined(SQLITE_TEST_REALLOC_STRESS)
# define ONLY_IF_REALLOC_STRESS(X)  (X)
#elif !defined(NDEBUG)
# define ONLY_IF_REALLOC_STRESS(X)  ((X)?(assert(0),1):0)
#else
# define ONLY_IF_REALLOC_STRESS(X)  (0)
#endif

/*
** Declarations used for tracing the operating system interfaces.
*/
#if defined(SQLITE_FORCE_OS_TRACE) || defined(SQLITE_TEST) || \
    (defined(SQLITE_DEBUG) && SQLITE_OS_WIN)
  extern int sqlite3OSTrace;
# define OSTRACE(X)          if( sqlite3OSTrace ) sqlite3DebugPrintf X

#endif

/*
** Default maximum size of memory used by memory-mapped I/O in the VFS
*/
#ifdef __APPLE__
# include <TargetConditionals.h>
# if TARGET_OS_IPHONE
#   undef SQLITE_MAX_MMAP_SIZE
#   define SQLITE_MAX_MMAP_SIZE 0
# endif
#endif
#ifndef SQLITE_MAX_MMAP_SIZE
# if defined(__linux__) \
  || defined(_WIN32) \
  || (defined(__APPLE__) && defined(__MACH__)) \
  || defined(__sun) \
  || defined(__FreeBSD__) \

#define BTREE_BULKLOAD 0x00000001  /* Used to full index in sorted order */
#define BTREE_SEEK_EQ  0x00000002  /* EQ seeks only - no range seeks */

/* 
** Flags passed as the third argument to sqlite3BtreeCursor().
**
** For read-only cursors the wrFlag argument is always zero. For read-write
** cursors it may be set to either (BTREE_WRCSR|BTREE_FORDELETE) or
** (BTREE_WRCSR). If the BTREE_FORDELETE flag is set, then the cursor will
** cursors it may be set to either (BTREE_WRCSR|BTREE_FORDELETE) or just
** (BTREE_WRCSR). If the BTREE_FORDELETE bit is set, then the cursor will
** only be used by SQLite for the following:
**
**   * to seek to and delete specific entries, and/or
**   * to seek to and then delete specific entries, and/or
**
**   * to read values that will be used to create keys that other
**     BTREE_FORDELETE cursors will seek to and delete.
**
** The BTREE_FORDELETE flag is an optimization hint.  It is not used by
** by this, the native b-tree engine of SQLite, but it is available to
** alternative storage engines that might be substituted in place of this
** b-tree system.  For alternative storage engines in which a delete of
** the main table row automatically deletes corresponding index rows,
** the FORDELETE flag hint allows those alternative storage engines to
** skip a lot of work.  Namely:  FORDELETE cursors may treat all SEEK
** and DELETE operations as no-ops, and any READ operation against a
** FORDELETE cursor may return a null row: 0x01 0x00.
*/
#define BTREE_WRCSR     0x00000004     /* read-write cursor */
#define BTREE_FORDELETE 0x00000008     /* Cursor is for seek/delete only */

SQLITE_PRIVATE int sqlite3BtreeCursor(
  Btree*,                              /* BTree containing table to open */
  int iTable,                          /* Index of root page */

  UnpackedRecord *pUnKey,
  i64 intKey,
  int bias,
  int *pRes
);
SQLITE_PRIVATE int sqlite3BtreeCursorHasMoved(BtCursor*);
SQLITE_PRIVATE int sqlite3BtreeCursorRestore(BtCursor*, int*);
SQLITE_PRIVATE int sqlite3BtreeDelete(BtCursor*, int);
SQLITE_PRIVATE int sqlite3BtreeDelete(BtCursor*, u8 flags);

/* Allowed flags for the 2nd argument to sqlite3BtreeDelete() */
#define BTREE_SAVEPOSITION 0x02  /* Leave cursor pointing at NEXT or PREV */
#define BTREE_AUXDELETE    0x04  /* not the primary delete operation */

SQLITE_PRIVATE int sqlite3BtreeInsert(BtCursor*, const void *pKey, i64 nKey,
                                  const void *pData, int nData,
                                  int nZero, int bias, int seekResult);
SQLITE_PRIVATE int sqlite3BtreeFirst(BtCursor*, int *pRes);
SQLITE_PRIVATE int sqlite3BtreeLast(BtCursor*, int *pRes);
SQLITE_PRIVATE int sqlite3BtreeNext(BtCursor*, int *pRes);
SQLITE_PRIVATE int sqlite3BtreeEof(BtCursor*);

** If we are not using shared cache, then there is no need to
** use mutexes to access the BtShared structures.  So make the
** Enter and Leave procedures no-ops.
*/
#ifndef SQLITE_OMIT_SHARED_CACHE
SQLITE_PRIVATE   void sqlite3BtreeEnter(Btree*);
SQLITE_PRIVATE   void sqlite3BtreeEnterAll(sqlite3*);
SQLITE_PRIVATE   int sqlite3BtreeSharable(Btree*);
SQLITE_PRIVATE   void sqlite3BtreeEnterCursor(BtCursor*);
#else
# define sqlite3BtreeEnter(X) 
# define sqlite3BtreeEnterAll(X)
# define sqlite3BtreeSharable(X) 0
# define sqlite3BtreeEnterCursor(X)
#endif

#if !defined(SQLITE_OMIT_SHARED_CACHE) && SQLITE_THREADSAFE
SQLITE_PRIVATE   int sqlite3BtreeSharable(Btree*);
SQLITE_PRIVATE   void sqlite3BtreeLeave(Btree*);
SQLITE_PRIVATE   void sqlite3BtreeEnterCursor(BtCursor*);
SQLITE_PRIVATE   void sqlite3BtreeLeaveCursor(BtCursor*);
SQLITE_PRIVATE   void sqlite3BtreeLeaveAll(sqlite3*);
#ifndef NDEBUG
  /* These routines are used inside assert() statements only. */
SQLITE_PRIVATE   int sqlite3BtreeHoldsMutex(Btree*);
SQLITE_PRIVATE   int sqlite3BtreeHoldsAllMutexes(sqlite3*);
SQLITE_PRIVATE   int sqlite3SchemaMutexHeld(sqlite3*,int,Schema*);
#endif
#else

# define sqlite3BtreeSharable(X) 0
# define sqlite3BtreeLeave(X)
# define sqlite3BtreeEnterCursor(X)
# define sqlite3BtreeLeaveCursor(X)
# define sqlite3BtreeLeaveAll(X)

# define sqlite3BtreeHoldsMutex(X) 1
# define sqlite3BtreeHoldsAllMutexes(X) 1
# define sqlite3SchemaMutexHeld(X,Y,Z) 1
#endif

** The makefile scans the vdbe.c source file and creates the "opcodes.h"
** header file that defines a number for each opcode used by the VDBE.
*/
/************** Include opcodes.h in the middle of vdbe.h ********************/
/************** Begin file opcodes.h *****************************************/
/* Automatically generated.  Do not edit */
/* See the tool/mkopcodeh.tcl script for details */
#define OP_Savepoint       1
#define OP_AutoCommit      2
#define OP_Transaction     3
#define OP_SorterNext      4
#define OP_PrevIfOpen      5
#define OP_NextIfOpen      6
#define OP_Prev            7
#define OP_Next            8
#define OP_Checkpoint      9
#define OP_JournalMode    10
#define OP_Vacuum         11
#define OP_VFilter        12 /* synopsis: iplan=r[P3] zplan='P4'           */
#define OP_VUpdate        13 /* synopsis: data=r[P3@P2]                    */
#define OP_Goto           14
#define OP_Gosub          15
#define OP_Return         16
#define OP_InitCoroutine  17
#define OP_EndCoroutine   18
#define OP_Savepoint       0
#define OP_AutoCommit      1
#define OP_Transaction     2
#define OP_SorterNext      3
#define OP_PrevIfOpen      4
#define OP_NextIfOpen      5
#define OP_Prev            6
#define OP_Next            7
#define OP_Checkpoint      8
#define OP_JournalMode     9
#define OP_Vacuum         10
#define OP_VFilter        11 /* synopsis: iplan=r[P3] zplan='P4'           */
#define OP_VUpdate        12 /* synopsis: data=r[P3@P2]                    */
#define OP_Goto           13
#define OP_Gosub          14
#define OP_Return         15
#define OP_InitCoroutine  16
#define OP_EndCoroutine   17
#define OP_Yield          18
#define OP_Not            19 /* same as TK_NOT, synopsis: r[P2]= !r[P1]    */
#define OP_Yield          20
#define OP_HaltIfNull     21 /* synopsis: if r[P3]=null halt               */
#define OP_Halt           22
#define OP_Integer        23 /* synopsis: r[P2]=P1                         */
#define OP_Int64          24 /* synopsis: r[P2]=P4                         */
#define OP_String         25 /* synopsis: r[P2]='P4' (len=P1)              */
#define OP_Null           26 /* synopsis: r[P2..P3]=NULL                   */
#define OP_SoftNull       27 /* synopsis: r[P1]=NULL                       */
#define OP_Blob           28 /* synopsis: r[P2]=P4 (len=P1)                */
#define OP_Variable       29 /* synopsis: r[P2]=parameter(P1,P4)           */
#define OP_Move           30 /* synopsis: r[P2@P3]=r[P1@P3]                */
#define OP_Copy           31 /* synopsis: r[P2@P3+1]=r[P1@P3+1]            */
#define OP_SCopy          32 /* synopsis: r[P2]=r[P1]                      */
#define OP_IntCopy        33 /* synopsis: r[P2]=r[P1]                      */
#define OP_ResultRow      34 /* synopsis: output=r[P1@P2]                  */
#define OP_CollSeq        35
#define OP_Function0      36 /* synopsis: r[P3]=func(r[P2@P5])             */
#define OP_Function       37 /* synopsis: r[P3]=func(r[P2@P5])             */
#define OP_AddImm         38 /* synopsis: r[P1]=r[P1]+P2                   */
#define OP_MustBeInt      39
#define OP_RealAffinity   40
#define OP_Cast           41 /* synopsis: affinity(r[P1])                  */
#define OP_Permutation    42
#define OP_Compare        43 /* synopsis: r[P1@P3] <-> r[P2@P3]            */
#define OP_Jump           44
#define OP_Once           45
#define OP_If             46
#define OP_IfNot          47
#define OP_Column         48 /* synopsis: r[P3]=PX                         */
#define OP_Affinity       49 /* synopsis: affinity(r[P1@P2])               */
#define OP_MakeRecord     50 /* synopsis: r[P3]=mkrec(r[P1@P2])            */
#define OP_Count          51 /* synopsis: r[P2]=count()                    */
#define OP_ReadCookie     52
#define OP_SetCookie      53
#define OP_ReopenIdx      54 /* synopsis: root=P2 iDb=P3                   */
#define OP_OpenRead       55 /* synopsis: root=P2 iDb=P3                   */
#define OP_OpenWrite      56 /* synopsis: root=P2 iDb=P3                   */
#define OP_OpenAutoindex  57 /* synopsis: nColumn=P2                       */
#define OP_OpenEphemeral  58 /* synopsis: nColumn=P2                       */
#define OP_SorterOpen     59
#define OP_SequenceTest   60 /* synopsis: if( cursor[P1].ctr++ ) pc = P2   */
#define OP_OpenPseudo     61 /* synopsis: P3 columns in r[P2]              */
#define OP_Close          62
#define OP_ColumnsUsed    63
#define OP_SeekLT         64 /* synopsis: key=r[P3@P4]                     */
#define OP_SeekLE         65 /* synopsis: key=r[P3@P4]                     */
#define OP_SeekGE         66 /* synopsis: key=r[P3@P4]                     */
#define OP_SeekGT         67 /* synopsis: key=r[P3@P4]                     */
#define OP_Seek           68 /* synopsis: intkey=r[P2]                     */
#define OP_NoConflict     69 /* synopsis: key=r[P3@P4]                     */
#define OP_NotFound       70 /* synopsis: key=r[P3@P4]                     */
#define OP_HaltIfNull     20 /* synopsis: if r[P3]=null halt               */
#define OP_Halt           21
#define OP_Integer        22 /* synopsis: r[P2]=P1                         */
#define OP_Int64          23 /* synopsis: r[P2]=P4                         */
#define OP_String         24 /* synopsis: r[P2]='P4' (len=P1)              */
#define OP_Null           25 /* synopsis: r[P2..P3]=NULL                   */
#define OP_SoftNull       26 /* synopsis: r[P1]=NULL                       */
#define OP_Blob           27 /* synopsis: r[P2]=P4 (len=P1)                */
#define OP_Variable       28 /* synopsis: r[P2]=parameter(P1,P4)           */
#define OP_Move           29 /* synopsis: r[P2@P3]=r[P1@P3]                */
#define OP_Copy           30 /* synopsis: r[P2@P3+1]=r[P1@P3+1]            */
#define OP_SCopy          31 /* synopsis: r[P2]=r[P1]                      */
#define OP_IntCopy        32 /* synopsis: r[P2]=r[P1]                      */
#define OP_ResultRow      33 /* synopsis: output=r[P1@P2]                  */
#define OP_CollSeq        34
#define OP_Function0      35 /* synopsis: r[P3]=func(r[P2@P5])             */
#define OP_Function       36 /* synopsis: r[P3]=func(r[P2@P5])             */
#define OP_AddImm         37 /* synopsis: r[P1]=r[P1]+P2                   */
#define OP_MustBeInt      38
#define OP_RealAffinity   39
#define OP_Cast           40 /* synopsis: affinity(r[P1])                  */
#define OP_Permutation    41
#define OP_Compare        42 /* synopsis: r[P1@P3] <-> r[P2@P3]            */
#define OP_Jump           43
#define OP_Once           44
#define OP_If             45
#define OP_IfNot          46
#define OP_Column         47 /* synopsis: r[P3]=PX                         */
#define OP_Affinity       48 /* synopsis: affinity(r[P1@P2])               */
#define OP_MakeRecord     49 /* synopsis: r[P3]=mkrec(r[P1@P2])            */
#define OP_Count          50 /* synopsis: r[P2]=count()                    */
#define OP_ReadCookie     51
#define OP_SetCookie      52
#define OP_ReopenIdx      53 /* synopsis: root=P2 iDb=P3                   */
#define OP_OpenRead       54 /* synopsis: root=P2 iDb=P3                   */
#define OP_OpenWrite      55 /* synopsis: root=P2 iDb=P3                   */
#define OP_OpenAutoindex  56 /* synopsis: nColumn=P2                       */
#define OP_OpenEphemeral  57 /* synopsis: nColumn=P2                       */
#define OP_SorterOpen     58
#define OP_SequenceTest   59 /* synopsis: if( cursor[P1].ctr++ ) pc = P2   */
#define OP_OpenPseudo     60 /* synopsis: P3 columns in r[P2]              */
#define OP_Close          61
#define OP_ColumnsUsed    62
#define OP_SeekLT         63 /* synopsis: key=r[P3@P4]                     */
#define OP_SeekLE         64 /* synopsis: key=r[P3@P4]                     */
#define OP_SeekGE         65 /* synopsis: key=r[P3@P4]                     */
#define OP_SeekGT         66 /* synopsis: key=r[P3@P4]                     */
#define OP_NoConflict     67 /* synopsis: key=r[P3@P4]                     */
#define OP_NotFound       68 /* synopsis: key=r[P3@P4]                     */
#define OP_Found          69 /* synopsis: key=r[P3@P4]                     */
#define OP_NotExists      70 /* synopsis: intkey=r[P3]                     */
#define OP_Or             71 /* same as TK_OR, synopsis: r[P3]=(r[P1] || r[P2]) */
#define OP_And            72 /* same as TK_AND, synopsis: r[P3]=(r[P1] && r[P2]) */
#define OP_Found          73 /* synopsis: key=r[P3@P4]                     */
#define OP_NotExists      74 /* synopsis: intkey=r[P3]                     */
#define OP_Sequence       75 /* synopsis: r[P2]=cursor[P1].ctr++           */
#define OP_Sequence       73 /* synopsis: r[P2]=cursor[P1].ctr++           */
#define OP_NewRowid       74 /* synopsis: r[P2]=rowid                      */
#define OP_Insert         75 /* synopsis: intkey=r[P3] data=r[P2]          */
#define OP_IsNull         76 /* same as TK_ISNULL, synopsis: if r[P1]==NULL goto P2 */
#define OP_NotNull        77 /* same as TK_NOTNULL, synopsis: if r[P1]!=NULL goto P2 */
#define OP_Ne             78 /* same as TK_NE, synopsis: if r[P1]!=r[P3] goto P2 */
#define OP_Eq             79 /* same as TK_EQ, synopsis: if r[P1]==r[P3] goto P2 */
#define OP_Gt             80 /* same as TK_GT, synopsis: if r[P1]>r[P3] goto P2 */
#define OP_Le             81 /* same as TK_LE, synopsis: if r[P1]<=r[P3] goto P2 */
#define OP_Lt             82 /* same as TK_LT, synopsis: if r[P1]<r[P3] goto P2 */
#define OP_Ge             83 /* same as TK_GE, synopsis: if r[P1]>=r[P3] goto P2 */
#define OP_NewRowid       84 /* synopsis: r[P2]=rowid                      */
#define OP_InsertInt      84 /* synopsis: intkey=P3 data=r[P2]             */
#define OP_BitAnd         85 /* same as TK_BITAND, synopsis: r[P3]=r[P1]&r[P2] */
#define OP_BitOr          86 /* same as TK_BITOR, synopsis: r[P3]=r[P1]|r[P2] */
#define OP_ShiftLeft      87 /* same as TK_LSHIFT, synopsis: r[P3]=r[P2]<<r[P1] */
#define OP_ShiftRight     88 /* same as TK_RSHIFT, synopsis: r[P3]=r[P2]>>r[P1] */
#define OP_Add            89 /* same as TK_PLUS, synopsis: r[P3]=r[P1]+r[P2] */
#define OP_Subtract       90 /* same as TK_MINUS, synopsis: r[P3]=r[P2]-r[P1] */
#define OP_Multiply       91 /* same as TK_STAR, synopsis: r[P3]=r[P1]*r[P2] */
#define OP_Divide         92 /* same as TK_SLASH, synopsis: r[P3]=r[P2]/r[P1] */
#define OP_Remainder      93 /* same as TK_REM, synopsis: r[P3]=r[P2]%r[P1] */
#define OP_Concat         94 /* same as TK_CONCAT, synopsis: r[P3]=r[P2]+r[P1] */
#define OP_Insert         95 /* synopsis: intkey=r[P3] data=r[P2]          */
#define OP_Delete         95
#define OP_BitNot         96 /* same as TK_BITNOT, synopsis: r[P1]= ~r[P1] */
#define OP_String8        97 /* same as TK_STRING, synopsis: r[P2]='P4'    */
#define OP_InsertInt      98 /* synopsis: intkey=P3 data=r[P2]             */
#define OP_Delete         99
#define OP_ResetCount    100
#define OP_SorterCompare 101 /* synopsis: if key(P1)!=trim(r[P3],P4) goto P2 */
#define OP_SorterData    102 /* synopsis: r[P2]=data                       */
#define OP_RowKey        103 /* synopsis: r[P2]=key                        */
#define OP_RowData       104 /* synopsis: r[P2]=data                       */
#define OP_Rowid         105 /* synopsis: r[P2]=rowid                      */
#define OP_NullRow       106
#define OP_Last          107
#define OP_SorterSort    108
#define OP_Sort          109
#define OP_Rewind        110
#define OP_SorterInsert  111
#define OP_IdxInsert     112 /* synopsis: key=r[P2]                        */
#define OP_IdxDelete     113 /* synopsis: key=r[P2@P3]                     */
#define OP_IdxRowid      114 /* synopsis: r[P2]=rowid                      */
#define OP_IdxLE         115 /* synopsis: key=r[P3@P4]                     */
#define OP_IdxGT         116 /* synopsis: key=r[P3@P4]                     */
#define OP_IdxLT         117 /* synopsis: key=r[P3@P4]                     */
#define OP_IdxGE         118 /* synopsis: key=r[P3@P4]                     */
#define OP_Destroy       119
#define OP_Clear         120
#define OP_ResetSorter   121
#define OP_CreateIndex   122 /* synopsis: r[P2]=root iDb=P1                */
#define OP_CreateTable   123 /* synopsis: r[P2]=root iDb=P1                */
#define OP_ParseSchema   124
#define OP_LoadAnalysis  125
#define OP_DropTable     126
#define OP_DropIndex     127
#define OP_DropTrigger   128
#define OP_IntegrityCk   129
#define OP_RowSetAdd     130 /* synopsis: rowset(P1)=r[P2]                 */
#define OP_RowSetRead    131 /* synopsis: r[P3]=rowset(P1)                 */
#define OP_RowSetTest    132 /* synopsis: if r[P3] in rowset(P1) goto P2   */
#define OP_ResetCount     98
#define OP_SorterCompare  99 /* synopsis: if key(P1)!=trim(r[P3],P4) goto P2 */
#define OP_SorterData    100 /* synopsis: r[P2]=data                       */
#define OP_RowKey        101 /* synopsis: r[P2]=key                        */
#define OP_RowData       102 /* synopsis: r[P2]=data                       */
#define OP_Rowid         103 /* synopsis: r[P2]=rowid                      */
#define OP_NullRow       104
#define OP_Last          105
#define OP_SorterSort    106
#define OP_Sort          107
#define OP_Rewind        108
#define OP_SorterInsert  109
#define OP_IdxInsert     110 /* synopsis: key=r[P2]                        */
#define OP_IdxDelete     111 /* synopsis: key=r[P2@P3]                     */
#define OP_Seek          112 /* synopsis: Move P3 to P1.rowid              */
#define OP_IdxRowid      113 /* synopsis: r[P2]=rowid                      */
#define OP_IdxLE         114 /* synopsis: key=r[P3@P4]                     */
#define OP_IdxGT         115 /* synopsis: key=r[P3@P4]                     */
#define OP_IdxLT         116 /* synopsis: key=r[P3@P4]                     */
#define OP_IdxGE         117 /* synopsis: key=r[P3@P4]                     */
#define OP_Destroy       118
#define OP_Clear         119
#define OP_ResetSorter   120
#define OP_CreateIndex   121 /* synopsis: r[P2]=root iDb=P1                */
#define OP_CreateTable   122 /* synopsis: r[P2]=root iDb=P1                */
#define OP_ParseSchema   123
#define OP_LoadAnalysis  124
#define OP_DropTable     125
#define OP_DropIndex     126
#define OP_DropTrigger   127
#define OP_IntegrityCk   128
#define OP_RowSetAdd     129 /* synopsis: rowset(P1)=r[P2]                 */
#define OP_RowSetRead    130 /* synopsis: r[P3]=rowset(P1)                 */
#define OP_RowSetTest    131 /* synopsis: if r[P3] in rowset(P1) goto P2   */
#define OP_Program       132
#define OP_Real          133 /* same as TK_FLOAT, synopsis: r[P2]=P4       */
#define OP_Program       134
#define OP_Param         135
#define OP_FkCounter     136 /* synopsis: fkctr[P1]+=P2                    */
#define OP_FkIfZero      137 /* synopsis: if fkctr[P1]==0 goto P2          */
#define OP_MemMax        138 /* synopsis: r[P1]=max(r[P1],r[P2])           */
#define OP_IfPos         139 /* synopsis: if r[P1]>0 then r[P1]-=P3, goto P2 */
#define OP_SetIfNotPos   140 /* synopsis: if r[P1]<=0 then r[P2]=P3        */
#define OP_IfNotZero     141 /* synopsis: if r[P1]!=0 then r[P1]-=P3, goto P2 */
#define OP_DecrJumpZero  142 /* synopsis: if (--r[P1])==0 goto P2          */
#define OP_JumpZeroIncr  143 /* synopsis: if (r[P1]++)==0 ) goto P2        */
#define OP_AggStep0      144 /* synopsis: accum=r[P3] step(r[P2@P5])       */
#define OP_AggStep       145 /* synopsis: accum=r[P3] step(r[P2@P5])       */
#define OP_AggFinal      146 /* synopsis: accum=r[P1] N=P2                 */
#define OP_IncrVacuum    147
#define OP_Expire        148
#define OP_TableLock     149 /* synopsis: iDb=P1 root=P2 write=P3          */
#define OP_VBegin        150
#define OP_VCreate       151
#define OP_VDestroy      152
#define OP_VOpen         153
#define OP_VColumn       154 /* synopsis: r[P3]=vcolumn(P2)                */
#define OP_VNext         155
#define OP_VRename       156
#define OP_Pagecount     157
#define OP_MaxPgcnt      158
#define OP_Init          159 /* synopsis: Start at P2                      */
#define OP_CursorHint    160
#define OP_Noop          161
#define OP_Explain       162
#define OP_Param         134
#define OP_FkCounter     135 /* synopsis: fkctr[P1]+=P2                    */
#define OP_FkIfZero      136 /* synopsis: if fkctr[P1]==0 goto P2          */
#define OP_MemMax        137 /* synopsis: r[P1]=max(r[P1],r[P2])           */
#define OP_IfPos         138 /* synopsis: if r[P1]>0 then r[P1]-=P3, goto P2 */
#define OP_OffsetLimit   139 /* synopsis: if r[P1]>0 then r[P2]=r[P1]+max(0,r[P3]) else r[P2]=(-1) */
#define OP_IfNotZero     140 /* synopsis: if r[P1]!=0 then r[P1]-=P3, goto P2 */
#define OP_DecrJumpZero  141 /* synopsis: if (--r[P1])==0 goto P2          */
#define OP_JumpZeroIncr  142 /* synopsis: if (r[P1]++)==0 ) goto P2        */
#define OP_AggStep0      143 /* synopsis: accum=r[P3] step(r[P2@P5])       */
#define OP_AggStep       144 /* synopsis: accum=r[P3] step(r[P2@P5])       */
#define OP_AggFinal      145 /* synopsis: accum=r[P1] N=P2                 */
#define OP_IncrVacuum    146
#define OP_Expire        147
#define OP_TableLock     148 /* synopsis: iDb=P1 root=P2 write=P3          */
#define OP_VBegin        149
#define OP_VCreate       150
#define OP_VDestroy      151
#define OP_VOpen         152
#define OP_VColumn       153 /* synopsis: r[P3]=vcolumn(P2)                */
#define OP_VNext         154
#define OP_VRename       155
#define OP_Pagecount     156
#define OP_MaxPgcnt      157
#define OP_Init          158 /* synopsis: Start at P2                      */
#define OP_CursorHint    159
#define OP_Noop          160
#define OP_Explain       161

/* Properties such as "out2" or "jump" that are specified in
** comments following the "case" for each opcode in the vdbe.c
** are encoded into bitvectors as follows:
*/
#define OPFLG_JUMP            0x0001  /* jump:  P2 holds jmp target */
#define OPFLG_IN1             0x0002  /* in1:   P1 is an input */
#define OPFLG_IN2             0x0004  /* in2:   P2 is an input */
#define OPFLG_IN3             0x0008  /* in3:   P3 is an input */
#define OPFLG_OUT2            0x0010  /* out2:  P2 is an output */
#define OPFLG_OUT3            0x0020  /* out3:  P3 is an output */
#define OPFLG_JUMP        0x01  /* jump:  P2 holds jmp target */
#define OPFLG_IN1         0x02  /* in1:   P1 is an input */
#define OPFLG_IN2         0x04  /* in2:   P2 is an input */
#define OPFLG_IN3         0x08  /* in3:   P3 is an input */
#define OPFLG_OUT2        0x10  /* out2:  P2 is an output */
#define OPFLG_OUT3        0x20  /* out3:  P3 is an output */
#define OPFLG_INITIALIZER {\
/*   0 */ 0x00, 0x00, 0x00, 0x00, 0x01, 0x01, 0x01, 0x01,\
/*   8 */ 0x01, 0x00, 0x10, 0x00, 0x01, 0x00, 0x01, 0x01,\
/*  16 */ 0x02, 0x01, 0x02, 0x12, 0x03, 0x08, 0x00, 0x10,\
/*  24 */ 0x10, 0x10, 0x10, 0x00, 0x10, 0x10, 0x00, 0x00,\
/*  32 */ 0x10, 0x10, 0x00, 0x00, 0x00, 0x00, 0x02, 0x03,\
/*  40 */ 0x02, 0x02, 0x00, 0x00, 0x01, 0x01, 0x03, 0x03,\
/*  48 */ 0x00, 0x00, 0x00, 0x10, 0x10, 0x08, 0x00, 0x00,\
/*  56 */ 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,\
/*  64 */ 0x09, 0x09, 0x09, 0x09, 0x04, 0x09, 0x09, 0x26,\
/*  72 */ 0x26, 0x09, 0x09, 0x10, 0x03, 0x03, 0x0b, 0x0b,\
/*  80 */ 0x0b, 0x0b, 0x0b, 0x0b, 0x10, 0x26, 0x26, 0x26,\
/*   0 */ 0x00, 0x00, 0x00, 0x01, 0x01, 0x01, 0x01, 0x01,\
/*   8 */ 0x00, 0x10, 0x00, 0x01, 0x00, 0x01, 0x01, 0x02,\
/*  16 */ 0x01, 0x02, 0x03, 0x12, 0x08, 0x00, 0x10, 0x10,\
/*  24 */ 0x10, 0x10, 0x00, 0x10, 0x10, 0x00, 0x00, 0x10,\
/*  32 */ 0x10, 0x00, 0x00, 0x00, 0x00, 0x02, 0x03, 0x02,\
/*  40 */ 0x02, 0x00, 0x00, 0x01, 0x01, 0x03, 0x03, 0x00,\
/*  48 */ 0x00, 0x00, 0x10, 0x10, 0x00, 0x00, 0x00, 0x00,\
/*  56 */ 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x09,\
/*  64 */ 0x09, 0x09, 0x09, 0x09, 0x09, 0x09, 0x09, 0x26,\
/*  72 */ 0x26, 0x10, 0x10, 0x00, 0x03, 0x03, 0x0b, 0x0b,\
/*  80 */ 0x0b, 0x0b, 0x0b, 0x0b, 0x00, 0x26, 0x26, 0x26,\
/*  88 */ 0x26, 0x26, 0x26, 0x26, 0x26, 0x26, 0x26, 0x00,\
/*  96 */ 0x12, 0x10, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,\
/* 104 */ 0x00, 0x10, 0x00, 0x01, 0x01, 0x01, 0x01, 0x04,\
/* 112 */ 0x04, 0x00, 0x10, 0x01, 0x01, 0x01, 0x01, 0x10,\
/* 120 */ 0x00, 0x00, 0x10, 0x10, 0x00, 0x00, 0x00, 0x00,\
/* 128 */ 0x00, 0x00, 0x06, 0x23, 0x0b, 0x10, 0x01, 0x10,\
/* 136 */ 0x00, 0x01, 0x04, 0x03, 0x06, 0x03, 0x03, 0x03,\
/* 144 */ 0x00, 0x00, 0x00, 0x01, 0x00, 0x00, 0x00, 0x00,\
/* 152 */ 0x00, 0x00, 0x00, 0x01, 0x00, 0x10, 0x10, 0x01,\
/* 160 */ 0x00, 0x00, 0x00,}
/*  96 */ 0x12, 0x10, 0x00, 0x00, 0x00, 0x00, 0x00, 0x10,\
/* 104 */ 0x00, 0x01, 0x01, 0x01, 0x01, 0x04, 0x04, 0x00,\
/* 112 */ 0x00, 0x10, 0x01, 0x01, 0x01, 0x01, 0x10, 0x00,\
/* 120 */ 0x00, 0x10, 0x10, 0x00, 0x00, 0x00, 0x00, 0x00,\
/* 128 */ 0x00, 0x06, 0x23, 0x0b, 0x01, 0x10, 0x10, 0x00,\
/* 136 */ 0x01, 0x04, 0x03, 0x1a, 0x03, 0x03, 0x03, 0x00,\
/* 144 */ 0x00, 0x00, 0x01, 0x00, 0x00, 0x00, 0x00, 0x00,\
/* 152 */ 0x00, 0x00, 0x01, 0x00, 0x10, 0x10, 0x01, 0x00,\
/* 160 */ 0x00, 0x00,}

/************** End of opcodes.h *********************************************/
/************** Continuing where we left off in vdbe.h ***********************/

/*
** Prototypes for the VDBE interface.  See comments on the implementation
** for a description of what each of these routines does.
*/
SQLITE_PRIVATE Vdbe *sqlite3VdbeCreate(Parse*);
SQLITE_PRIVATE int sqlite3VdbeAddOp0(Vdbe*,int);
SQLITE_PRIVATE int sqlite3VdbeAddOp1(Vdbe*,int,int);
SQLITE_PRIVATE int sqlite3VdbeAddOp2(Vdbe*,int,int,int);
SQLITE_PRIVATE int sqlite3VdbeGoto(Vdbe*,int);
SQLITE_PRIVATE int sqlite3VdbeLoadString(Vdbe*,int,const char*);
SQLITE_PRIVATE void sqlite3VdbeMultiLoad(Vdbe*,int,const char*,...);
SQLITE_PRIVATE int sqlite3VdbeAddOp3(Vdbe*,int,int,int,int);
SQLITE_PRIVATE int sqlite3VdbeAddOp4(Vdbe*,int,int,int,int,const char *zP4,int);
SQLITE_PRIVATE int sqlite3VdbeAddOp4Dup8(Vdbe*,int,int,int,int,const u8*,int);
SQLITE_PRIVATE int sqlite3VdbeAddOp4Int(Vdbe*,int,int,int,int,int);
SQLITE_PRIVATE void sqlite3VdbeEndCoroutine(Vdbe*,int);
#if defined(SQLITE_DEBUG) && !defined(SQLITE_TEST_REALLOC_STRESS)
SQLITE_PRIVATE   void sqlite3VdbeVerifyNoMallocRequired(Vdbe *p, int N);
#else
# define sqlite3VdbeVerifyNoMallocRequired(A,B)
#endif
SQLITE_PRIVATE int sqlite3VdbeAddOpList(Vdbe*, int nOp, VdbeOpList const *aOp, int iLineno);
SQLITE_PRIVATE VdbeOp *sqlite3VdbeAddOpList(Vdbe*, int nOp, VdbeOpList const *aOp, int iLineno);
SQLITE_PRIVATE void sqlite3VdbeAddParseSchemaOp(Vdbe*,int,char*);
SQLITE_PRIVATE void sqlite3VdbeChangeOpcode(Vdbe*, u32 addr, u8);
SQLITE_PRIVATE void sqlite3VdbeChangeP1(Vdbe*, u32 addr, int P1);
SQLITE_PRIVATE void sqlite3VdbeChangeP2(Vdbe*, u32 addr, int P2);
SQLITE_PRIVATE void sqlite3VdbeChangeP3(Vdbe*, u32 addr, int P3);
SQLITE_PRIVATE void sqlite3VdbeChangeP5(Vdbe*, u8 P5);
SQLITE_PRIVATE void sqlite3VdbeJumpHere(Vdbe*, int addr);
SQLITE_PRIVATE void sqlite3VdbeChangeToNoop(Vdbe*, int addr);
SQLITE_PRIVATE int sqlite3VdbeChangeToNoop(Vdbe*, int addr);
SQLITE_PRIVATE int sqlite3VdbeDeletePriorOpcode(Vdbe*, u8 op);
SQLITE_PRIVATE void sqlite3VdbeChangeP4(Vdbe*, int addr, const char *zP4, int N);
SQLITE_PRIVATE void sqlite3VdbeSetP4KeyInfo(Parse*, Index*);
SQLITE_PRIVATE void sqlite3VdbeUsesBtree(Vdbe*, int);
SQLITE_PRIVATE VdbeOp *sqlite3VdbeGetOp(Vdbe*, int);
SQLITE_PRIVATE int sqlite3VdbeMakeLabel(Vdbe*);
SQLITE_PRIVATE void sqlite3VdbeRunOnlyOnce(Vdbe*);

/*
** Flags for sqlite3PagerSetFlags()
*/
#define PAGER_SYNCHRONOUS_OFF       0x01  /* PRAGMA synchronous=OFF */
#define PAGER_SYNCHRONOUS_NORMAL    0x02  /* PRAGMA synchronous=NORMAL */
#define PAGER_SYNCHRONOUS_FULL      0x03  /* PRAGMA synchronous=FULL */
#define PAGER_SYNCHRONOUS_EXTRA     0x04  /* PRAGMA synchronous=EXTRA */
#define PAGER_SYNCHRONOUS_MASK      0x03  /* Mask for three values above */
#define PAGER_FULLFSYNC             0x04  /* PRAGMA fullfsync=ON */
#define PAGER_CKPT_FULLFSYNC        0x08  /* PRAGMA checkpoint_fullfsync=ON */
#define PAGER_CACHESPILL            0x10  /* PRAGMA cache_spill=ON */
#define PAGER_FLAGS_MASK            0x1c  /* All above except SYNCHRONOUS */
#define PAGER_SYNCHRONOUS_MASK      0x07  /* Mask for four values above */
#define PAGER_FULLFSYNC             0x08  /* PRAGMA fullfsync=ON */
#define PAGER_CKPT_FULLFSYNC        0x10  /* PRAGMA checkpoint_fullfsync=ON */
#define PAGER_CACHESPILL            0x20  /* PRAGMA cache_spill=ON */
#define PAGER_FLAGS_MASK            0x38  /* All above except SYNCHRONOUS */

/*
** The remainder of this file contains the declarations of the functions
** that make up the Pager sub-system API. See source code comments for 
** a detailed description of each routine.
*/

#ifdef SQLITE_DEBUG
SQLITE_PRIVATE   int sqlite3PagerRefcount(Pager*);
#endif
SQLITE_PRIVATE int sqlite3PagerMemUsed(Pager*);
SQLITE_PRIVATE const char *sqlite3PagerFilename(Pager*, int);
SQLITE_PRIVATE sqlite3_vfs *sqlite3PagerVfs(Pager*);
SQLITE_PRIVATE sqlite3_file *sqlite3PagerFile(Pager*);
SQLITE_PRIVATE sqlite3_file *sqlite3PagerJrnlFile(Pager*);
SQLITE_PRIVATE const char *sqlite3PagerJournalname(Pager*);
SQLITE_PRIVATE int sqlite3PagerNosync(Pager*);
SQLITE_PRIVATE void *sqlite3PagerTempSpace(Pager*);
SQLITE_PRIVATE int sqlite3PagerIsMemdb(Pager*);
SQLITE_PRIVATE void sqlite3PagerCacheStat(Pager *, int, int, int *);
SQLITE_PRIVATE void sqlite3PagerClearCache(Pager *);
SQLITE_PRIVATE int sqlite3SectorSize(sqlite3_file *);

#define PGHDR_DIRTY           0x002  /* Page is on the PCache.pDirty list */
#define PGHDR_WRITEABLE       0x004  /* Journaled and ready to modify */
#define PGHDR_NEED_SYNC       0x008  /* Fsync the rollback journal before
                                     ** writing this page to the database */
#define PGHDR_NEED_READ       0x010  /* Content is unread */
#define PGHDR_DONT_WRITE      0x020  /* Do not write content to disk */
#define PGHDR_MMAP            0x040  /* This is an mmap page object */

#define PGHDR_WAL_APPEND      0x080  /* Appended to wal file */

/* Initialize and shutdown the page cache subsystem */
SQLITE_PRIVATE int sqlite3PcacheInitialize(void);
SQLITE_PRIVATE void sqlite3PcacheShutdown(void);

/* Page cache buffer management:
** These routines implement SQLITE_CONFIG_PAGECACHE.

** with a particular database connection.  Hence, schema information cannot
** be stored in lookaside because in shared cache mode the schema information
** is shared by multiple database connections.  Therefore, while parsing
** schema information, the Lookaside.bEnabled flag is cleared so that
** lookaside allocations are not used to construct the schema objects.
*/
struct Lookaside {
  u32 bDisable;           /* Only operate the lookaside when zero */
  u16 sz;                 /* Size of each buffer in bytes */
  u8 bEnabled;            /* False to disable new lookaside allocations */
  u8 bMalloced;           /* True if pStart obtained from sqlite3_malloc() */
  int nOut;               /* Number of buffers currently checked out */
  int mxOut;              /* Highwater mark for nOut */
  int anStat[3];          /* 0: hits.  1: size misses.  2: full misses */
  LookasideSlot *pFree;   /* List of available buffers */
  void *pStart;           /* First byte of available memory space */
  void *pEnd;             /* First byte past end of available space */

  int errCode;                  /* Most recent error code (SQLITE_*) */
  int errMask;                  /* & result codes with this before returning */
  u16 dbOptFlags;               /* Flags to enable/disable optimizations */
  u8 enc;                       /* Text encoding */
  u8 autoCommit;                /* The auto-commit flag. */
  u8 temp_store;                /* 1: file 2: memory 0: default */
  u8 mallocFailed;              /* True if we have seen a malloc failure */
  u8 bBenignMalloc;             /* Do not require OOMs if true */
  u8 dfltLockMode;              /* Default locking-mode for attached dbs */
  signed char nextAutovac;      /* Autovac setting after VACUUM if >=0 */
  u8 suppressErr;               /* Do not issue error messages if true */
  u8 vtabOnConflict;            /* Value to return for s3_vtab_on_conflict() */
  u8 isTransactionSavepoint;    /* True if the outermost savepoint is a TS */
  int nextPagesize;             /* Pagesize after VACUUM if >0 */
  u32 magic;                    /* Magic number for detect library misuse */

#define ENC(db)        ((db)->enc)

/*
** Possible values for the sqlite3.flags.
*/
#define SQLITE_VdbeTrace      0x00000001  /* True to trace VDBE execution */
#define SQLITE_InternChanges  0x00000002  /* Uncommitted Hash table changes */
#define SQLITE_FullColNames   0x00000004  /* Show full column names on SELECT */
#define SQLITE_FullFSync      0x00000004  /* Use full fsync on the backend */
#define SQLITE_CkptFullFSync  0x00000008  /* Use full fsync for checkpoint */
#define SQLITE_CacheSpill     0x00000010  /* OK to spill pager cache */
#define SQLITE_FullFSync      0x00000008  /* Use full fsync on the backend */
#define SQLITE_CkptFullFSync  0x00000010  /* Use full fsync for checkpoint */
#define SQLITE_CacheSpill     0x00000020  /* OK to spill pager cache */
#define SQLITE_FullColNames   0x00000020  /* Show full column names on SELECT */
#define SQLITE_ShortColNames  0x00000040  /* Show short columns names */
#define SQLITE_CountRows      0x00000080  /* Count rows changed by INSERT, */
                                          /*   DELETE, or UPDATE and return */
                                          /*   the count using a callback. */
#define SQLITE_NullCallback   0x00000100  /* Invoke the callback once if the */
                                          /*   result set is empty */
#define SQLITE_SqlTrace       0x00000200  /* Debug print SQL as it executes */

** points to a linked list of these structures.
*/
struct FuncDef {
  i16 nArg;            /* Number of arguments.  -1 means unlimited */
  u16 funcFlags;       /* Some combination of SQLITE_FUNC_* */
  void *pUserData;     /* User data parameter */
  FuncDef *pNext;      /* Next function with same name */
  void (*xFunc)(sqlite3_context*,int,sqlite3_value**); /* Regular function */
  void (*xSFunc)(sqlite3_context*,int,sqlite3_value**); /* func or agg-step */
  void (*xStep)(sqlite3_context*,int,sqlite3_value**); /* Aggregate step */
  void (*xFinalize)(sqlite3_context*);                /* Aggregate finalizer */
  void (*xFinalize)(sqlite3_context*);                  /* Agg finalizer */
  char *zName;         /* SQL name of the function. */
  FuncDef *pHash;      /* Next with a different name but the same hash */
  FuncDestructor *pDestructor;   /* Reference counted destructor function */
};

/*
** This structure encapsulates a user-function destructor callback (as

**     function likeFunc. Argument pArg is cast to a (void *) and made
**     available as the function user-data (sqlite3_user_data()). The
**     FuncDef.flags variable is set to the value passed as the flags
**     parameter.
*/
#define FUNCTION(zName, nArg, iArg, bNC, xFunc) \
  {nArg, SQLITE_FUNC_CONSTANT|SQLITE_UTF8|(bNC*SQLITE_FUNC_NEEDCOLL), \
   SQLITE_INT_TO_PTR(iArg), 0, xFunc, 0, 0, #zName, 0, 0}
   SQLITE_INT_TO_PTR(iArg), 0, xFunc, 0, #zName, 0, 0}
#define VFUNCTION(zName, nArg, iArg, bNC, xFunc) \
  {nArg, SQLITE_UTF8|(bNC*SQLITE_FUNC_NEEDCOLL), \
   SQLITE_INT_TO_PTR(iArg), 0, xFunc, 0, 0, #zName, 0, 0}
   SQLITE_INT_TO_PTR(iArg), 0, xFunc, 0, #zName, 0, 0}
#define DFUNCTION(zName, nArg, iArg, bNC, xFunc) \
  {nArg, SQLITE_FUNC_SLOCHNG|SQLITE_UTF8|(bNC*SQLITE_FUNC_NEEDCOLL), \
   SQLITE_INT_TO_PTR(iArg), 0, xFunc, 0, 0, #zName, 0, 0}
   SQLITE_INT_TO_PTR(iArg), 0, xFunc, 0, #zName, 0, 0}
#define FUNCTION2(zName, nArg, iArg, bNC, xFunc, extraFlags) \
  {nArg,SQLITE_FUNC_CONSTANT|SQLITE_UTF8|(bNC*SQLITE_FUNC_NEEDCOLL)|extraFlags,\
   SQLITE_INT_TO_PTR(iArg), 0, xFunc, 0, 0, #zName, 0, 0}
   SQLITE_INT_TO_PTR(iArg), 0, xFunc, 0, #zName, 0, 0}
#define STR_FUNCTION(zName, nArg, pArg, bNC, xFunc) \
  {nArg, SQLITE_FUNC_SLOCHNG|SQLITE_UTF8|(bNC*SQLITE_FUNC_NEEDCOLL), \
   pArg, 0, xFunc, 0, 0, #zName, 0, 0}
   pArg, 0, xFunc, 0, #zName, 0, 0}
#define LIKEFUNC(zName, nArg, arg, flags) \
  {nArg, SQLITE_FUNC_CONSTANT|SQLITE_UTF8|flags, \
   (void *)arg, 0, likeFunc, 0, 0, #zName, 0, 0}
   (void *)arg, 0, likeFunc, 0, #zName, 0, 0}
#define AGGREGATE(zName, nArg, arg, nc, xStep, xFinal) \
  {nArg, SQLITE_UTF8|(nc*SQLITE_FUNC_NEEDCOLL), \
   SQLITE_INT_TO_PTR(arg), 0, 0, xStep,xFinal,#zName,0,0}
   SQLITE_INT_TO_PTR(arg), 0, xStep,xFinal,#zName,0,0}
#define AGGREGATE2(zName, nArg, arg, nc, xStep, xFinal, extraFlags) \
  {nArg, SQLITE_UTF8|(nc*SQLITE_FUNC_NEEDCOLL)|extraFlags, \
   SQLITE_INT_TO_PTR(arg), 0, 0, xStep,xFinal,#zName,0,0}
   SQLITE_INT_TO_PTR(arg), 0, xStep,xFinal,#zName,0,0}

/*
** All current savepoints are stored in a linked list starting at
** sqlite3.pSavepoint. The first element in the list is the most recently
** opened savepoint. Savepoints are added to the list by the vdbe
** OP_Savepoint instruction.
*/

};

/*
** During code generation of statements that do inserts into AUTOINCREMENT 
** tables, the following information is attached to the Table.u.autoInc.p
** pointer of each autoincrement table to record some side information that
** the code generator needs.  We have to keep per-table autoincrement
** information in case inserts are down within triggers.  Triggers do not
** information in case inserts are done within triggers.  Triggers do not
** normally coordinate their activities, but we do need to coordinate the
** loading and saving of autoincrement information.
*/
struct AutoincInfo {
  AutoincInfo *pNext;   /* Next info block in a list of them all */
  Table *pTab;          /* Table this info block refers to */
  int iDb;              /* Index in sqlite3.aDb[] of database holding pTab */

  u8 checkSchema;      /* Causes schema cookie check after an error */
  u8 nested;           /* Number of nested calls to the parser/code generator */
  u8 nTempReg;         /* Number of temporary registers in aTempReg[] */
  u8 isMultiWrite;     /* True if statement may modify/insert multiple rows */
  u8 mayAbort;         /* True if statement may throw an ABORT exception */
  u8 hasCompound;      /* Need to invoke convertCompoundSelectToSubquery() */
  u8 okConstFactor;    /* OK to factor out constants */
  u8 disableLookaside; /* Number of times lookaside has been disabled */
  int aTempReg[8];     /* Holding area for temporary registers */
  int nRangeReg;       /* Size of the temporary register block */
  int iRangeReg;       /* First register in temporary register block */
  int nErr;            /* Number of errors seen */
  int nTab;            /* Number of previously allocated VDBE cursors */
  int nMem;            /* Number of memory cells used so far */
  int nSet;            /* Number of sets used so far */

  /************************************************************************
  ** Above is constant between recursions.  Below is reset before and after
  ** each recursion.  The boundary between these two regions is determined
  ** using offsetof(Parse,nVar) so the nVar field must be the first field
  ** in the recursive region.
  ************************************************************************/

  int nVar;                 /* Number of '?' variables seen in the SQL so far */
  ynVar nVar;               /* Number of '?' variables seen in the SQL so far */
  int nzVar;                /* Number of available slots in azVar[] */
  u8 iPkSortOrder;          /* ASC or DESC for INTEGER PRIMARY KEY */
  u8 explain;               /* True if the EXPLAIN flag is found on the query */
#ifndef SQLITE_OMIT_VIRTUALTABLE
  u8 declareVtab;           /* True if inside sqlite3_declare_vtab() */
  int nVtabLock;            /* Number of virtual tables to lock */
#endif

  const char *zAuthContext;   /* Put saved Parse.zAuthContext here */
  Parse *pParse;              /* The Parse structure */
};

/*
** Bitfield flags for P5 value in various opcodes.
*/
#define OPFLAG_NCHANGE       0x01    /* Set to update db->nChange */
#define OPFLAG_NCHANGE       0x01    /* OP_Insert: Set to update db->nChange */
                                     /* Also used in P2 (not P5) of OP_Delete */
#define OPFLAG_EPHEM         0x01    /* OP_Column: Ephemeral output is ok */
#define OPFLAG_LASTROWID     0x02    /* Set to update db->lastRowid */
#define OPFLAG_ISUPDATE      0x04    /* This OP_Insert is an sql UPDATE */
#define OPFLAG_APPEND        0x08    /* This is likely to be an append */
#define OPFLAG_USESEEKRESULT 0x10    /* Try to avoid a seek in BtreeInsert() */
#define OPFLAG_LENGTHARG     0x40    /* OP_Column only used for length() */
#define OPFLAG_TYPEOFARG     0x80    /* OP_Column only used for typeof() */
#define OPFLAG_BULKCSR       0x01    /* OP_Open** used to open bulk cursor */
#define OPFLAG_SEEKEQ        0x02    /* OP_Open** cursor uses EQ seek only */
#define OPFLAG_FORDELETE     0x08    /* OP_Open is opening for-delete csr */
#define OPFLAG_FORDELETE     0x08    /* OP_Open should use BTREE_FORDELETE */
#define OPFLAG_P2ISREG       0x10    /* P2 to OP_Open** is a register number */
#define OPFLAG_PERMUTE       0x01    /* OP_Compare: use the permutation */
#define OPFLAG_SAVEPOSITION  0x02    /* OP_Delete: keep cursor position */
#define OPFLAG_AUXDELETE     0x04    /* OP_Delete: index in a DELETE op */

/*
 * Each trigger present in the database schema is stored as an instance of
 * struct Trigger. 
 *
 * Pointers to instances of struct Trigger are stored in two ways.
 * 1. In the "trigHash" hash table (part of the sqlite3* that represents the 

  sqlite3 *db;         /* Optional database for lookaside.  Can be NULL */
  char *zBase;         /* A base allocation.  Not from malloc. */
  char *zText;         /* The string collected so far */
  u32  nChar;          /* Length of the string so far */
  u32  nAlloc;         /* Amount of space allocated in zText */
  u32  mxAlloc;        /* Maximum allowed allocation.  0 for no malloc usage */
  u8   accError;       /* STRACCUM_NOMEM or STRACCUM_TOOBIG */
  u8   bMalloced;      /* zText points to allocated space */
  u8   printfFlags;    /* SQLITE_PRINTF flags below */
};
#define STRACCUM_NOMEM   1
#define STRACCUM_TOOBIG  2
#define SQLITE_PRINTF_INTERNAL 0x01  /* Internal-use-only converters allowed */
#define SQLITE_PRINTF_SQLFUNC  0x02  /* SQL function arguments to VXPrintf */
#define SQLITE_PRINTF_MALLOCED 0x04  /* True if xText is allocated space */

#define isMalloced(X)  (((X)->printfFlags & SQLITE_PRINTF_MALLOCED)!=0)


/*
** A pointer to this structure is used to communicate information
** from sqlite3Init and OP_ParseSchema into the sqlite3InitCallback.
*/
typedef struct {
  sqlite3 *db;        /* The database being initialized */

*/
#define CORRUPT_DB  (sqlite3Config.neverCorrupt==0)

/*
** Context pointer passed down through the tree-walk.
*/
struct Walker {
  Parse *pParse;                            /* Parser context.  */
  int (*xExprCallback)(Walker*, Expr*);     /* Callback for expressions */
  int (*xSelectCallback)(Walker*,Select*);  /* Callback for SELECTs */
  void (*xSelectCallback2)(Walker*,Select*);/* Second callback for SELECTs */
  Parse *pParse;                            /* Parser context.  */
  int walkerDepth;                          /* Number of subqueries */
  u8 eCode;                                 /* A small processing code */
  union {                                   /* Extra data for callback */
    NameContext *pNC;                          /* Naming context */
    int n;                                     /* A counter */
    int iCur;                                  /* A cursor number */
    SrcList *pSrcList;                         /* FROM clause */
    struct SrcCount *pSrcCount;                /* Counting column references */
    struct CCurHint *pCCurHint;                /* Used by codeCursorHint() */
    int *aiCol;                                /* array of column indexes */
  } u;
};

/* Forward declarations */
SQLITE_PRIVATE int sqlite3WalkExpr(Walker*, Expr*);
SQLITE_PRIVATE int sqlite3WalkExprList(Walker*, ExprList*);
SQLITE_PRIVATE int sqlite3WalkSelect(Walker*, Select*);

SQLITE_PRIVATE int sqlite3CorruptError(int);
SQLITE_PRIVATE int sqlite3MisuseError(int);
SQLITE_PRIVATE int sqlite3CantopenError(int);
#define SQLITE_CORRUPT_BKPT sqlite3CorruptError(__LINE__)
#define SQLITE_MISUSE_BKPT sqlite3MisuseError(__LINE__)
#define SQLITE_CANTOPEN_BKPT sqlite3CantopenError(__LINE__)

/*
** FTS3 and FTS4 both require virtual table support
*/
#if defined(SQLITE_OMIT_VIRTUALTABLE)
# undef SQLITE_ENABLE_FTS3
# undef SQLITE_ENABLE_FTS4
#endif

/*
** FTS4 is really an extension for FTS3.  It is enabled using the
** SQLITE_ENABLE_FTS3 macro.  But to avoid confusion we also call
** the SQLITE_ENABLE_FTS4 macro to serve as an alias for SQLITE_ENABLE_FTS3.
*/
#if defined(SQLITE_ENABLE_FTS4) && !defined(SQLITE_ENABLE_FTS3)

SQLITE_PRIVATE int sqlite3MallocInit(void);
SQLITE_PRIVATE void sqlite3MallocEnd(void);
SQLITE_PRIVATE void *sqlite3Malloc(u64);
SQLITE_PRIVATE void *sqlite3MallocZero(u64);
SQLITE_PRIVATE void *sqlite3DbMallocZero(sqlite3*, u64);
SQLITE_PRIVATE void *sqlite3DbMallocRaw(sqlite3*, u64);
SQLITE_PRIVATE void *sqlite3DbMallocRawNN(sqlite3*, u64);
SQLITE_PRIVATE char *sqlite3DbStrDup(sqlite3*,const char*);
SQLITE_PRIVATE char *sqlite3DbStrNDup(sqlite3*,const char*, u64);
SQLITE_PRIVATE void *sqlite3Realloc(void*, u64);
SQLITE_PRIVATE void *sqlite3DbReallocOrFree(sqlite3 *, void *, u64);
SQLITE_PRIVATE void *sqlite3DbRealloc(sqlite3 *, void *, u64);
SQLITE_PRIVATE void sqlite3DbFree(sqlite3*, void*);
SQLITE_PRIVATE int sqlite3MallocSize(void*);

*/
struct PrintfArguments {
  int nArg;                /* Total number of arguments */
  int nUsed;               /* Number of arguments used so far */
  sqlite3_value **apArg;   /* The argument values */
};

#define SQLITE_PRINTF_INTERNAL 0x01
#define SQLITE_PRINTF_SQLFUNC  0x02
SQLITE_PRIVATE void sqlite3VXPrintf(StrAccum*, u32, const char*, va_list);
SQLITE_PRIVATE void sqlite3XPrintf(StrAccum*, u32, const char*, ...);
SQLITE_PRIVATE void sqlite3VXPrintf(StrAccum*, const char*, va_list);
SQLITE_PRIVATE void sqlite3XPrintf(StrAccum*, const char*, ...);
SQLITE_PRIVATE char *sqlite3MPrintf(sqlite3*,const char*, ...);
SQLITE_PRIVATE char *sqlite3VMPrintf(sqlite3*,const char*, va_list);
#if defined(SQLITE_DEBUG) || defined(SQLITE_HAVE_OS_TRACE)
SQLITE_PRIVATE   void sqlite3DebugPrintf(const char*, ...);
#endif
#if defined(SQLITE_TEST)
SQLITE_PRIVATE   void *sqlite3TestTextToPtr(const char*);
#endif

#if defined(SQLITE_DEBUG)
SQLITE_PRIVATE   void sqlite3TreeViewExpr(TreeView*, const Expr*, u8);
SQLITE_PRIVATE   void sqlite3TreeViewExprList(TreeView*, const ExprList*, u8, const char*);
SQLITE_PRIVATE   void sqlite3TreeViewSelect(TreeView*, const Select*, u8);
SQLITE_PRIVATE   void sqlite3TreeViewWith(TreeView*, const With*, u8);
#endif


SQLITE_PRIVATE void sqlite3SetString(char **, sqlite3*, const char*);
SQLITE_PRIVATE void sqlite3ErrorMsg(Parse*, const char*, ...);
SQLITE_PRIVATE int sqlite3Dequote(char*);
SQLITE_PRIVATE void sqlite3TokenInit(Token*,char*);
SQLITE_PRIVATE int sqlite3KeywordCode(const unsigned char*, int);
SQLITE_PRIVATE int sqlite3RunParser(Parse*, const char*, char **);
SQLITE_PRIVATE void sqlite3FinishCoding(Parse*);
SQLITE_PRIVATE int sqlite3GetTempReg(Parse*);
SQLITE_PRIVATE void sqlite3ReleaseTempReg(Parse*,int);
SQLITE_PRIVATE int sqlite3GetTempRange(Parse*,int);
SQLITE_PRIVATE void sqlite3ReleaseTempRange(Parse*,int,int);

SQLITE_PRIVATE u32 sqlite3ExprListFlags(const ExprList*);
SQLITE_PRIVATE int sqlite3Init(sqlite3*, char**);
SQLITE_PRIVATE int sqlite3InitCallback(void*, int, char**, char**);
SQLITE_PRIVATE void sqlite3Pragma(Parse*,Token*,Token*,Token*,int);
SQLITE_PRIVATE void sqlite3ResetAllSchemasOfConnection(sqlite3*);
SQLITE_PRIVATE void sqlite3ResetOneSchema(sqlite3*,int);
SQLITE_PRIVATE void sqlite3CollapseDatabaseArray(sqlite3*);
SQLITE_PRIVATE void sqlite3BeginParse(Parse*,int);
SQLITE_PRIVATE void sqlite3CommitInternalChanges(sqlite3*);
SQLITE_PRIVATE void sqlite3DeleteColumnNames(sqlite3*,Table*);
SQLITE_PRIVATE int sqlite3ColumnsFromExprList(Parse*,ExprList*,i16*,Column**);
SQLITE_PRIVATE Table *sqlite3ResultSetOfSelect(Parse*,Select*);
SQLITE_PRIVATE void sqlite3OpenMasterTable(Parse *, int);
SQLITE_PRIVATE Index *sqlite3PrimaryKeyIndex(Table*);
SQLITE_PRIVATE i16 sqlite3ColumnOfIndex(Index*, i16);

SQLITE_PRIVATE int sqlite3IsRowid(const char*);
SQLITE_PRIVATE void sqlite3GenerateRowDelete(
    Parse*,Table*,Trigger*,int,int,int,i16,u8,u8,u8,int);
SQLITE_PRIVATE void sqlite3GenerateRowIndexDelete(Parse*, Table*, int, int, int*, int);
SQLITE_PRIVATE int sqlite3GenerateIndexKey(Parse*, Index*, int, int, int, int*,Index*,int);
SQLITE_PRIVATE void sqlite3ResolvePartIdxLabel(Parse*,int);
SQLITE_PRIVATE void sqlite3GenerateConstraintChecks(Parse*,Table*,int*,int,int,int,int,
                                     u8,u8,int,int*);
                                     u8,u8,int,int*,int*);
SQLITE_PRIVATE void sqlite3CompleteInsertion(Parse*,Table*,int,int,int,int*,int,int,int);
SQLITE_PRIVATE int sqlite3OpenTableAndIndices(Parse*, Table*, int, u8, int, u8*, int*, int*);
SQLITE_PRIVATE void sqlite3BeginWriteOperation(Parse*, int, int);
SQLITE_PRIVATE void sqlite3MultiWrite(Parse*);
SQLITE_PRIVATE void sqlite3MayAbort(Parse*);
SQLITE_PRIVATE void sqlite3HaltConstraint(Parse*, int, int, char*, i8, u8);
SQLITE_PRIVATE void sqlite3UniqueConstraint(Parse*, int, Index*);

SQLITE_PRIVATE int sqlite3FindDb(sqlite3*, Token*);
SQLITE_PRIVATE int sqlite3FindDbName(sqlite3 *, const char *);
SQLITE_PRIVATE int sqlite3AnalysisLoad(sqlite3*,int iDB);
SQLITE_PRIVATE void sqlite3DeleteIndexSamples(sqlite3*,Index*);
SQLITE_PRIVATE void sqlite3DefaultRowEst(Index*);
SQLITE_PRIVATE void sqlite3RegisterLikeFunctions(sqlite3*, int);
SQLITE_PRIVATE int sqlite3IsLikeFunction(sqlite3*,Expr*,int*,char*);
SQLITE_PRIVATE void sqlite3MinimumFileFormat(Parse*, int, int);
SQLITE_PRIVATE void sqlite3SchemaClear(void *);
SQLITE_PRIVATE Schema *sqlite3SchemaGet(sqlite3 *, Btree *);
SQLITE_PRIVATE int sqlite3SchemaToIndex(sqlite3 *db, Schema *);
SQLITE_PRIVATE KeyInfo *sqlite3KeyInfoAlloc(sqlite3*,int,int);
SQLITE_PRIVATE void sqlite3KeyInfoUnref(KeyInfo*);
SQLITE_PRIVATE KeyInfo *sqlite3KeyInfoRef(KeyInfo*);
SQLITE_PRIVATE KeyInfo *sqlite3KeyInfoOfIndex(Parse*, Index*);
#ifdef SQLITE_DEBUG
SQLITE_PRIVATE int sqlite3KeyInfoIsWriteable(KeyInfo*);
#endif
SQLITE_PRIVATE int sqlite3CreateFunc(sqlite3 *, const char *, int, int, void *, 
  void (*)(sqlite3_context*,int,sqlite3_value **),
  void (*)(sqlite3_context*,int,sqlite3_value **), void (*)(sqlite3_context*),
  FuncDestructor *pDestructor
);
SQLITE_PRIVATE void sqlite3OomFault(sqlite3*);
SQLITE_PRIVATE void sqlite3OomClear(sqlite3*);
SQLITE_PRIVATE int sqlite3ApiExit(sqlite3 *db, int);
SQLITE_PRIVATE int sqlite3OpenTempDatabase(Parse *);

SQLITE_PRIVATE void sqlite3StrAccumInit(StrAccum*, sqlite3*, char*, int, int);
SQLITE_PRIVATE void sqlite3StrAccumAppend(StrAccum*,const char*,int);
SQLITE_PRIVATE void sqlite3StrAccumAppendAll(StrAccum*,const char*);
SQLITE_PRIVATE void sqlite3AppendChar(StrAccum*,int,char);

**      * A b-tree cursor
**          -  In the main database or in an ephemeral database
**          -  On either an index or a table
**      * A sorter
**      * A virtual table
**      * A one-row "pseudotable" stored in a single register
*/
typedef struct VdbeCursor VdbeCursor;
struct VdbeCursor {
  u8 eCurType;          /* One of the CURTYPE_* values above */
  i8 iDb;               /* Index of cursor database in db->aDb[] (or -1) */
  u8 nullRow;           /* True if pointing to a row with no data */
  u8 deferredMoveto;    /* A call to sqlite3BtreeMoveto() is needed */
  u8 isTable;           /* True for rowid tables.  False for indexes */
#ifdef SQLITE_DEBUG
  u8 seekOp;            /* Most recent seek operation on this cursor */
  u8 wrFlag;            /* The wrFlag argument to sqlite3BtreeCursor() */
#endif
  Bool isEphemeral:1;   /* True for an ephemeral table */
  Bool useRandomRowid:1;/* Generate new record numbers semi-randomly */
  Bool isOrdered:1;     /* True if the underlying table is BTREE_UNORDERED */
  Pgno pgnoRoot;        /* Root page of the open btree cursor */
  i16 nField;           /* Number of fields in the header */
  u16 nHdrParsed;       /* Number of header fields parsed so far */
  union {
    BtCursor *pCursor;          /* CURTYPE_BTREE.  Btree cursor */
    sqlite3_vtab_cursor *pVCur; /* CURTYPE_VTAB.   Vtab cursor */
    int pseudoTableReg;         /* CURTYPE_PSEUDO. Reg holding content. */
    VdbeSorter *pSorter;        /* CURTYPE_SORTER. Sorter object */
  } uc;
  Btree *pBt;           /* Separate file holding temporary table */
  KeyInfo *pKeyInfo;    /* Info about index keys needed by index cursors */
  int seekResult;       /* Result of previous sqlite3BtreeMoveto() */
  i64 seqCount;         /* Sequence counter */
  i64 movetoTarget;     /* Argument to the deferred sqlite3BtreeMoveto() */
  VdbeCursor *pAltCursor; /* Associated index cursor from which to read */
  int *aAltMap;           /* Mapping from table to index column numbers */
#ifdef SQLITE_ENABLE_COLUMN_USED_MASK
  u64 maskUsed;         /* Mask of columns used by this cursor */
#endif

  /* Cached information about the header for the data record that the
  ** cursor is currently pointing to.  Only valid if cacheStatus matches
  ** Vdbe.cacheCtr.  Vdbe.cacheCtr will never take on the value of

  const u8 *aRow;       /* Data for the current row, if all on one page */
  u32 *aOffset;         /* Pointer to aType[nField] */
  u32 aType[1];         /* Type values for all entries in the record */
  /* 2*nField extra array elements allocated for aType[], beyond the one
  ** static element declared in the structure.  nField total array slots for
  ** aType[] and nField+1 array slots for aOffset[] */
};
typedef struct VdbeCursor VdbeCursor;

/*
** When a sub-program is executed (OP_Program), a structure of this type
** is allocated to store the current value of the program counter, as
** well as the current memory cell array and various other frame specific
** values stored in the Vdbe struct. When the sub-program is finished, 
** these values are copied back to the Vdbe from the VdbeFrame structure,

#define MEM_Real      0x0008   /* Value is a real number */
#define MEM_Blob      0x0010   /* Value is a BLOB */
#define MEM_AffMask   0x001f   /* Mask of affinity bits */
#define MEM_RowSet    0x0020   /* Value is a RowSet object */
#define MEM_Frame     0x0040   /* Value is a VdbeFrame object */
#define MEM_Undefined 0x0080   /* Value is undefined */
#define MEM_Cleared   0x0100   /* NULL set by OP_Null, not from data */
#define MEM_TypeMask  0x01ff   /* Mask of type bits */
#define MEM_TypeMask  0x81ff   /* Mask of type bits */


/* Whenever Mem contains a valid string or blob representation, one of
** the following flags must be set to determine the memory management
** policy for Mem.z.  The MEM_Term flag tells us whether or not the
** string is \000 or \u0000 terminated
*/
#define MEM_Term      0x0200   /* String rep is nul terminated */
#define MEM_Dyn       0x0400   /* Need to call Mem.xDel() on Mem.z */
#define MEM_Static    0x0800   /* Mem.z points to a static string */
#define MEM_Ephem     0x1000   /* Mem.z points to an ephemeral string */
#define MEM_Agg       0x2000   /* Mem.z points to an agg function context */
#define MEM_Zero      0x4000   /* Mem.i contains count of 0s appended to blob */
#define MEM_Subtype   0x8000   /* Mem.eSubtype is valid */
#ifdef SQLITE_OMIT_INCRBLOB
  #undef MEM_Zero
  #define MEM_Zero 0x0000
#endif

/* Return TRUE if Mem X contains dynamically allocated content - anything
** that needs to be deallocated to avoid a leak.
*/
#define VdbeMemDynamic(X)  \
  (((X)->flags&(MEM_Agg|MEM_Dyn|MEM_RowSet|MEM_Frame))!=0)

/*
** Clear any existing type flags from a Mem and replace them with f
*/
#define MemSetTypeFlag(p, f) \
   ((p)->flags = ((p)->flags&~(MEM_TypeMask|MEM_Zero))|f)

/*
** Function prototypes
*/
SQLITE_PRIVATE void sqlite3VdbeError(Vdbe*, const char *, ...);
SQLITE_PRIVATE void sqlite3VdbeFreeCursor(Vdbe *, VdbeCursor*);
void sqliteVdbePopStack(Vdbe*,int);
SQLITE_PRIVATE int sqlite3VdbeCursorMoveto(VdbeCursor*);
SQLITE_PRIVATE int sqlite3VdbeCursorMoveto(VdbeCursor**, int*);
SQLITE_PRIVATE int sqlite3VdbeCursorRestore(VdbeCursor*);
#if defined(SQLITE_DEBUG) || defined(VDBE_PROFILE)
SQLITE_PRIVATE void sqlite3VdbePrintOp(FILE*, int, Op*);
#endif
SQLITE_PRIVATE u32 sqlite3VdbeSerialTypeLen(u32);
SQLITE_PRIVATE u8 sqlite3VdbeOneByteSerialTypeLen(u8);
SQLITE_PRIVATE u32 sqlite3VdbeSerialType(Mem*, int, u32*);

SQLITE_PRIVATE double sqlite3VdbeRealValue(Mem*);
SQLITE_PRIVATE void sqlite3VdbeIntegerAffinity(Mem*);
SQLITE_PRIVATE int sqlite3VdbeMemRealify(Mem*);
SQLITE_PRIVATE int sqlite3VdbeMemNumerify(Mem*);
SQLITE_PRIVATE void sqlite3VdbeMemCast(Mem*,u8,u8);
SQLITE_PRIVATE int sqlite3VdbeMemFromBtree(BtCursor*,u32,u32,int,Mem*);
SQLITE_PRIVATE void sqlite3VdbeMemRelease(Mem *p);
#define VdbeMemDynamic(X)  \
  (((X)->flags&(MEM_Agg|MEM_Dyn|MEM_RowSet|MEM_Frame))!=0)
SQLITE_PRIVATE int sqlite3VdbeMemFinalize(Mem*, FuncDef*);
SQLITE_PRIVATE const char *sqlite3OpcodeName(int);
SQLITE_PRIVATE int sqlite3VdbeMemGrow(Mem *pMem, int n, int preserve);
SQLITE_PRIVATE int sqlite3VdbeMemClearAndResize(Mem *pMem, int n);
SQLITE_PRIVATE int sqlite3VdbeCloseStatement(Vdbe *, int);
SQLITE_PRIVATE void sqlite3VdbeFrameDelete(VdbeFrame*);
SQLITE_PRIVATE int sqlite3VdbeFrameRestore(VdbeFrame *);
SQLITE_PRIVATE int sqlite3VdbeTransferError(Vdbe *p);

SQLITE_PRIVATE int sqlite3VdbeSorterInit(sqlite3 *, int, VdbeCursor *);
SQLITE_PRIVATE void sqlite3VdbeSorterReset(sqlite3 *, VdbeSorter *);
SQLITE_PRIVATE void sqlite3VdbeSorterClose(sqlite3 *, VdbeCursor *);
SQLITE_PRIVATE int sqlite3VdbeSorterRowkey(const VdbeCursor *, Mem *);
SQLITE_PRIVATE int sqlite3VdbeSorterNext(sqlite3 *, const VdbeCursor *, int *);
SQLITE_PRIVATE int sqlite3VdbeSorterRewind(const VdbeCursor *, int *);
SQLITE_PRIVATE int sqlite3VdbeSorterWrite(const VdbeCursor *, Mem *);
SQLITE_PRIVATE int sqlite3VdbeSorterCompare(const VdbeCursor *, Mem *, int, int *);

#if !defined(SQLITE_OMIT_SHARED_CACHE) && SQLITE_THREADSAFE>0
#if !defined(SQLITE_OMIT_SHARED_CACHE) 
SQLITE_PRIVATE   void sqlite3VdbeEnter(Vdbe*);
SQLITE_PRIVATE   void sqlite3VdbeLeave(Vdbe*);
#else
# define sqlite3VdbeEnter(X)
#endif

#if !defined(SQLITE_OMIT_SHARED_CACHE) && SQLITE_THREADSAFE>0
SQLITE_PRIVATE   void sqlite3VdbeLeave(Vdbe*);
#else
# define sqlite3VdbeLeave(X)
#endif

#ifdef SQLITE_DEBUG
SQLITE_PRIVATE void sqlite3VdbeMemAboutToChange(Vdbe*,Mem*);
SQLITE_PRIVATE int sqlite3VdbeCheckMemInvariants(Mem*);
#endif

  char validJD;      /* True (1) if iJD is valid */
  char validTZ;      /* True (1) if tz is valid */
  char tzSet;        /* Timezone was set explicitly */
};


/*
** Convert zDate into one or more integers.  Additional arguments
** come in groups of 5 as follows:
** Convert zDate into one or more integers according to the conversion
** specifier zFormat.
**
** zFormat[] contains 4 characters for each integer converted, except for
** the last integer which is specified by three characters.  The meaning
** of a four-character format specifiers ABCD is:
**
**       N       number of digits in the integer
**       min     minimum allowed value of the integer
**       max     maximum allowed value of the integer
**       nextC   first character after the integer
**       pVal    where to write the integers value.
**    A:   number of digits to convert.  Always "2" or "4".
**    B:   minimum value.  Always "0" or "1".
**    C:   maximum value, decoded as:
**           a:  12
**           b:  14
**           c:  24
**           d:  31
**           e:  59
**           f:  9999
**    D:   the separator character, or \000 to indicate this is the
**         last number to convert.
**
** Conversions continue until one with nextC==0 is encountered.
** Example:  To translate an ISO-8601 date YYYY-MM-DD, the format would
** be "40f-21a-20c".  The "40f-" indicates the 4-digit year followed by "-".
** The "21a-" indicates the 2-digit month followed by "-".  The "20c" indicates
** the 2-digit day which is the last integer in the set.
**
** The function returns the number of successful conversions.
*/
static int getDigits(const char *zDate, ...){
static int getDigits(const char *zDate, const char *zFormat, ...){
  /* The aMx[] array translates the 3rd character of each format
  ** spec into a max size:    a   b   c   d   e     f */
  static const u16 aMx[] = { 12, 14, 24, 31, 59, 9999 };
  va_list ap;
  int val;
  int N;
  int cnt = 0;
  int min;
  int max;
  int nextC;
  char nextC;
  int *pVal;
  int cnt = 0;
  va_start(ap, zDate);
  va_start(ap, zFormat);
  do{
    char N = zFormat[0] - '0';
    char min = zFormat[1] - '0';
    N = va_arg(ap, int);
    min = va_arg(ap, int);
    max = va_arg(ap, int);
    nextC = va_arg(ap, int);
    int val = 0;
    u16 max;

    assert( zFormat[2]>='a' && zFormat[2]<='f' );
    max = aMx[zFormat[2] - 'a'];
    nextC = zFormat[3];
    pVal = va_arg(ap, int*);
    val = 0;
    while( N-- ){
      if( !sqlite3Isdigit(*zDate) ){
        goto end_getDigits;
      }
      val = val*10 + *zDate - '0';
      zDate++;
    }
    if( val<min || val>max || (nextC!=0 && nextC!=*zDate) ){
    if( val<(int)min || val>(int)max || (nextC!=0 && nextC!=*zDate) ){
      goto end_getDigits;
    }
    *pVal = val;
    *va_arg(ap,int*) = val;
    zDate++;
    cnt++;
    zFormat += 4;
  }while( nextC );
end_getDigits:
  va_end(ap);
  return cnt;
}

/*

  }else if( c=='Z' || c=='z' ){
    zDate++;
    goto zulu_time;
  }else{
    return c!=0;
  }
  zDate++;
  if( getDigits(zDate, 2, 0, 14, ':', &nHr, 2, 0, 59, 0, &nMn)!=2 ){
  if( getDigits(zDate, "20b:20e", &nHr, &nMn)!=2 ){
    return 1;
  }
  zDate += 5;
  p->tz = sgn*(nMn + nHr*60);
zulu_time:
  while( sqlite3Isspace(*zDate) ){ zDate++; }
  p->tzSet = 1;
  return *zDate!=0;
}

/*
** Parse times of the form HH:MM or HH:MM:SS or HH:MM:SS.FFFF.
** The HH, MM, and SS must each be exactly 2 digits.  The
** fractional seconds FFFF can be one or more digits.
**
** Return 1 if there is a parsing error and 0 on success.
*/
static int parseHhMmSs(const char *zDate, DateTime *p){
  int h, m, s;
  double ms = 0.0;
  if( getDigits(zDate, 2, 0, 24, ':', &h, 2, 0, 59, 0, &m)!=2 ){
  if( getDigits(zDate, "20c:20e", &h, &m)!=2 ){
    return 1;
  }
  zDate += 5;
  if( *zDate==':' ){
    zDate++;
    if( getDigits(zDate, 2, 0, 59, 0, &s)!=1 ){
    if( getDigits(zDate, "20e", &s)!=1 ){
      return 1;
    }
    zDate += 2;
    if( *zDate=='.' && sqlite3Isdigit(zDate[1]) ){
      double rScale = 1.0;
      zDate++;
      while( sqlite3Isdigit(*zDate) ){

  if( zDate[0]=='-' ){
    zDate++;
    neg = 1;
  }else{
    neg = 0;
  }
  if( getDigits(zDate,4,0,9999,'-',&Y,2,1,12,'-',&M,2,1,31,0,&D)!=3 ){
  if( getDigits(zDate, "40f-21a-21d", &Y, &M, &D)!=3 ){
    return 1;
  }
  zDate += 10;
  while( sqlite3Isspace(*zDate) || 'T'==*(u8*)zDate ){ zDate++; }
  if( parseHhMmSs(zDate, p)==0 ){
    /* We got the time */
  }else if( *zDate==0 ){

  testcase( n==(u64)db->aLimit[SQLITE_LIMIT_LENGTH] );
  if( n<sizeof(zBuf) ){
    z = zBuf;
  }else if( n>(u64)db->aLimit[SQLITE_LIMIT_LENGTH] ){
    sqlite3_result_error_toobig(context);
    return;
  }else{
    z = sqlite3DbMallocRaw(db, (int)n);
    z = sqlite3DbMallocRawNN(db, (int)n);
    if( z==0 ){
      sqlite3_result_error_nomem(context);
      return;
    }
  }
  computeJD(&x);
  computeYMD_HMS(&x);

** This file contains OS interface code that is common to all
** architectures.
*/
#define _SQLITE_OS_C_ 1
/* #include "sqliteInt.h" */
#undef _SQLITE_OS_C_

/*
** If we compile with the SQLITE_TEST macro set, then the following block
** of code will give us the ability to simulate a disk I/O error.  This
** is used for testing the I/O recovery logic.
*/
#if defined(SQLITE_TEST)
SQLITE_API int sqlite3_io_error_hit = 0;            /* Total number of I/O Errors */
SQLITE_API int sqlite3_io_error_hardhit = 0;        /* Number of non-benign errors */
SQLITE_API int sqlite3_io_error_pending = 0;        /* Count down to first I/O error */
SQLITE_API int sqlite3_io_error_persist = 0;        /* True if I/O errors persist */
SQLITE_API int sqlite3_io_error_benign = 0;         /* True if errors are benign */
SQLITE_API int sqlite3_diskfull_pending = 0;
SQLITE_API int sqlite3_diskfull = 0;
#endif /* defined(SQLITE_TEST) */

/*
** When testing, also keep a count of the number of open files.
*/
#if defined(SQLITE_TEST)
SQLITE_API int sqlite3_open_file_count = 0;
#endif /* defined(SQLITE_TEST) */

/*
** The default SQLite sqlite3_vfs implementations do not allocate
** memory (actually, os_unix.c allocates a small amount of memory
** from within OsOpen()), but some third-party implementations may.
** So we test the effects of a malloc() failing and the sqlite3OsXXX()
** function returning SQLITE_IOERR_NOMEM using the DO_OS_MALLOC_TEST macro.
**
** The following functions are instrumented for malloc() failure 
** The following functions are instrumented for malloc() failure
** testing:
**
**     sqlite3OsRead()
**     sqlite3OsWrite()
**     sqlite3OsSync()
**     sqlite3OsFileSize()
**     sqlite3OsLock()

** is only a hint and can be safely ignored.  The sqlite3OsFileControlHint()
** routine has no return value since the return value would be meaningless.
*/
SQLITE_PRIVATE int sqlite3OsFileControl(sqlite3_file *id, int op, void *pArg){
#ifdef SQLITE_TEST
  if( op!=SQLITE_FCNTL_COMMIT_PHASETWO ){
    /* Faults are not injected into COMMIT_PHASETWO because, assuming SQLite
    ** is using a regular VFS, it is called after the corresponding 
    ** transaction has been committed. Injecting a fault at this point 
    ** is using a regular VFS, it is called after the corresponding
    ** transaction has been committed. Injecting a fault at this point
    ** confuses the test scripts - the COMMIT comand returns SQLITE_NOMEM
    ** but the transaction is committed anyway.
    **
    ** The core must call OsFileControl() though, not OsFileControlHint(),
    ** as if a custom VFS (e.g. zipvfs) returns an error here, it probably
    ** means the commit really has failed and an error should be returned
    ** to the user.  */

#endif

/*
** The next group of routines are convenience wrappers around the
** VFS methods.
*/
SQLITE_PRIVATE int sqlite3OsOpen(
  sqlite3_vfs *pVfs, 
  const char *zPath, 
  sqlite3_file *pFile, 
  int flags, 
  sqlite3_vfs *pVfs,
  const char *zPath,
  sqlite3_file *pFile,
  int flags,
  int *pFlagsOut
){
  int rc;
  DO_OS_MALLOC_TEST(0);
  /* 0x87f7f is a mask of SQLITE_OPEN_ flags that are valid to be passed
  ** down into the VFS layer.  Some SQLITE_OPEN_ flags (for example,
  ** SQLITE_OPEN_FULLMUTEX or SQLITE_OPEN_SHAREDCACHE) are blocked before
  ** reaching the VFS. */
  rc = pVfs->xOpen(pVfs, zPath, pFile, flags & 0x87f7f, pFlagsOut);
  assert( rc==SQLITE_OK || pFile->pMethods==0 );
  return rc;
}
SQLITE_PRIVATE int sqlite3OsDelete(sqlite3_vfs *pVfs, const char *zPath, int dirSync){
  DO_OS_MALLOC_TEST(0);
  assert( dirSync==0 || dirSync==1 );
  return pVfs->xDelete(pVfs, zPath, dirSync);
}
SQLITE_PRIVATE int sqlite3OsAccess(
  sqlite3_vfs *pVfs, 
  const char *zPath, 
  int flags, 
  sqlite3_vfs *pVfs,
  const char *zPath,
  int flags,
  int *pResOut
){
  DO_OS_MALLOC_TEST(0);
  return pVfs->xAccess(pVfs, zPath, flags, pResOut);
}
SQLITE_PRIVATE int sqlite3OsFullPathname(
  sqlite3_vfs *pVfs, 
  const char *zPath, 
  int nPathOut, 
  sqlite3_vfs *pVfs,
  const char *zPath,
  int nPathOut,
  char *zPathOut
){
  DO_OS_MALLOC_TEST(0);
  zPathOut[0] = 0;
  return pVfs->xFullPathname(pVfs, zPath, nPathOut, zPathOut);
}
#ifndef SQLITE_OMIT_LOAD_EXTENSION

    rc = pVfs->xCurrentTime(pVfs, &r);
    *pTimeOut = (sqlite3_int64)(r*86400000.0);
  }
  return rc;
}

SQLITE_PRIVATE int sqlite3OsOpenMalloc(
  sqlite3_vfs *pVfs, 
  const char *zFile, 
  sqlite3_file **ppFile, 
  sqlite3_vfs *pVfs,
  const char *zFile,
  sqlite3_file **ppFile,
  int flags,
  int *pOutFlags
){
  int rc = SQLITE_NOMEM;
  sqlite3_file *pFile;
  pFile = (sqlite3_file *)sqlite3MallocZero(pVfs->szOsFile);
  if( pFile ){

  u8 *zPool;       /* Memory available to be allocated */
  
  /*
  ** Mutex to control access to the memory allocation subsystem.
  */
  sqlite3_mutex *mutex;

#if defined(SQLITE_DEBUG) || defined(SQLITE_TEST)
  /*
  ** Performance statistics
  */
  u64 nAlloc;         /* Total number of calls to malloc */
  u64 totalAlloc;     /* Total of all malloc calls - includes internal frag */
  u64 totalExcess;    /* Total internal fragmentation */
  u32 currentOut;     /* Current checkout, including internal fragmentation */
  u32 currentCount;   /* Current number of distinct checkouts */
  u32 maxOut;         /* Maximum instantaneous currentOut */
  u32 maxCount;       /* Maximum instantaneous currentCount */
  u32 maxRequest;     /* Largest allocation (exclusive of internal frag) */
#endif
  
  /*
  ** Lists of free blocks.  aiFreelist[0] is a list of free blocks of
  ** size mem5.szAtom.  aiFreelist[1] holds blocks of size szAtom*2.
  ** aiFreelist[2] holds free blocks of size szAtom*4.  And so forth.
  */
  int aiFreelist[LOGMAX+1];

  int iBin;        /* Index into mem5.aiFreelist[] */
  int iFullSz;     /* Size of allocation rounded up to power of 2 */
  int iLogsize;    /* Log2 of iFullSz/POW2_MIN */

  /* nByte must be a positive */
  assert( nByte>0 );

  /* No more than 1GiB per allocation */
  if( nByte > 0x40000000 ) return 0;

#if defined(SQLITE_DEBUG) || defined(SQLITE_TEST)
  /* Keep track of the maximum allocation request.  Even unfulfilled
  ** requests are counted */
  if( (u32)nByte>mem5.maxRequest ){
    /* Abort if the requested allocation size is larger than the largest
    ** power of two that we can represent using 32-bit signed integers. */
    if( nByte > 0x40000000 ) return 0;
    mem5.maxRequest = nByte;
  }
#endif


  /* Round nByte up to the next valid power of two */
  for(iFullSz=mem5.szAtom,iLogsize=0; iFullSz<nByte; iFullSz*=2,iLogsize++){}

  /* Make sure mem5.aiFreelist[iLogsize] contains at least one free
  ** block.  If not, then split a block of the next larger power of
  ** two in order to create a new free block of size iLogsize.

    iBin--;
    newSize = 1 << iBin;
    mem5.aCtrl[i+newSize] = CTRL_FREE | iBin;
    memsys5Link(i+newSize, iBin);
  }
  mem5.aCtrl[i] = iLogsize;

#if defined(SQLITE_DEBUG) || defined(SQLITE_TEST)
  /* Update allocator performance statistics. */
  mem5.nAlloc++;
  mem5.totalAlloc += iFullSz;
  mem5.totalExcess += iFullSz - nByte;
  mem5.currentCount++;
  mem5.currentOut += iFullSz;
  if( mem5.maxCount<mem5.currentCount ) mem5.maxCount = mem5.currentCount;
  if( mem5.maxOut<mem5.currentOut ) mem5.maxOut = mem5.currentOut;
#endif

#ifdef SQLITE_DEBUG
  /* Make sure the allocated memory does not assume that it is set to zero
  ** or retains a value from a previous allocation */
  memset(&mem5.zPool[i*mem5.szAtom], 0xAA, iFullSz);
#endif

  iLogsize = mem5.aCtrl[iBlock] & CTRL_LOGSIZE;
  size = 1<<iLogsize;
  assert( iBlock+size-1<(u32)mem5.nBlock );

  mem5.aCtrl[iBlock] |= CTRL_FREE;
  mem5.aCtrl[iBlock+size-1] |= CTRL_FREE;

#if defined(SQLITE_DEBUG) || defined(SQLITE_TEST)
  assert( mem5.currentCount>0 );
  assert( mem5.currentOut>=(size*mem5.szAtom) );
  mem5.currentCount--;
  mem5.currentOut -= size*mem5.szAtom;
  assert( mem5.currentOut>0 || mem5.currentCount==0 );
  assert( mem5.currentCount>0 || mem5.currentOut==0 );
#endif

  mem5.aCtrl[iBlock] = CTRL_FREE | iLogsize;
  while( ALWAYS(iLogsize<LOGMAX) ){
    int iBuddy;
    if( (iBlock>>iLogsize) & 1 ){
      iBuddy = iBlock - size;
      assert( iBuddy>=0 );
    }else{
      iBuddy = iBlock + size;
      if( iBuddy>=mem5.nBlock ) break;
    }
    assert( iBuddy>=0 );
    if( (iBuddy+(1<<iLogsize))>mem5.nBlock ) break;
    if( mem5.aCtrl[iBuddy]!=(CTRL_FREE | iLogsize) ) break;
    memsys5Unlink(iBuddy, iLogsize);
    iLogsize++;
    if( iBuddy<iBlock ){
      mem5.aCtrl[iBuddy] = CTRL_FREE | iLogsize;
      mem5.aCtrl[iBlock] = 0;
      iBlock = iBuddy;

/*
** Macros for performance tracing.  Normally turned off.  Only works
** on i486 hardware.
*/
#ifdef SQLITE_PERFORMANCE_TRACE

/* 
** hwtime.h contains inline assembler code for implementing 
/*
** hwtime.h contains inline assembler code for implementing
** high-performance timing routines.
*/
/************** Include hwtime.h in the middle of os_common.h ****************/
/************** Begin file hwtime.h ******************************************/
/*
** 2008 May 27
**

#endif

/*
** If we compile with the SQLITE_TEST macro set, then the following block
** of code will give us the ability to simulate a disk I/O error.  This
** is used for testing the I/O recovery logic.
*/
#ifdef SQLITE_TEST
SQLITE_API int sqlite3_io_error_hit = 0;            /* Total number of I/O Errors */
SQLITE_API int sqlite3_io_error_hardhit = 0;        /* Number of non-benign errors */
SQLITE_API int sqlite3_io_error_pending = 0;        /* Count down to first I/O error */
SQLITE_API int sqlite3_io_error_persist = 0;        /* True if I/O errors persist */
SQLITE_API int sqlite3_io_error_benign = 0;         /* True if errors are benign */
SQLITE_API int sqlite3_diskfull_pending = 0;
SQLITE_API int sqlite3_diskfull = 0;
#if defined(SQLITE_TEST)
SQLITE_API extern int sqlite3_io_error_hit;
SQLITE_API extern int sqlite3_io_error_hardhit;
SQLITE_API extern int sqlite3_io_error_pending;
SQLITE_API extern int sqlite3_io_error_persist;
SQLITE_API extern int sqlite3_io_error_benign;
SQLITE_API extern int sqlite3_diskfull_pending;
SQLITE_API extern int sqlite3_diskfull;
#define SimulateIOErrorBenign(X) sqlite3_io_error_benign=(X)
#define SimulateIOError(CODE)  \
  if( (sqlite3_io_error_persist && sqlite3_io_error_hit) \
       || sqlite3_io_error_pending-- == 1 )  \
              { local_ioerr(); CODE; }
static void local_ioerr(){
  IOTRACE(("IOERR\n"));

       sqlite3_diskfull_pending--; \
     } \
   }
#else
#define SimulateIOErrorBenign(X)
#define SimulateIOError(A)
#define SimulateDiskfullError(A)
#endif
#endif /* defined(SQLITE_TEST) */

/*
** When testing, keep a count of the number of open files.
*/
#ifdef SQLITE_TEST
SQLITE_API int sqlite3_open_file_count = 0;
#if defined(SQLITE_TEST)
SQLITE_API extern int sqlite3_open_file_count;
#define OpenCounter(X)  sqlite3_open_file_count+=(X)
#else
#define OpenCounter(X)
#endif
#endif /* defined(SQLITE_TEST) */

#endif /* !defined(_OS_COMMON_H_) */

/************** End of os_common.h *******************************************/
/************** Continuing where we left off in mutex_w32.c ******************/

/*

}

/*
** Allocate and zero memory.  If the allocation fails, make
** the mallocFailed flag in the connection pointer.
*/
SQLITE_PRIVATE void *sqlite3DbMallocZero(sqlite3 *db, u64 n){
  void *p;
  testcase( db==0 );
  void *p = sqlite3DbMallocRaw(db, n);
  p = sqlite3DbMallocRaw(db, n);
  if( p ){
    memset(p, 0, (size_t)n);
  }
  if( p ) memset(p, 0, (size_t)n);
  return p;
}


/* Finish the work of sqlite3DbMallocRawNN for the unusual and
** slower case when the allocation cannot be fulfilled using lookaside.
*/
static SQLITE_NOINLINE void *dbMallocRawFinish(sqlite3 *db, u64 n){
  void *p;
  assert( db!=0 );
  p = sqlite3Malloc(n);
  if( !p ) sqlite3OomFault(db);
  sqlite3MemdebugSetType(p, 
         (db->lookaside.bDisable==0) ? MEMTYPE_LOOKASIDE : MEMTYPE_HEAP);
  return p;
}

/*
** Allocate memory, either lookaside (if possible) or heap.  
** Allocate and zero memory.  If the allocation fails, make
** the mallocFailed flag in the connection pointer.
** If the allocation fails, set the mallocFailed flag in
** the connection pointer.
**
** If db!=0 and db->mallocFailed is true (indicating a prior malloc
** failure on the same database connection) then always return 0.
** Hence for a particular database connection, once malloc starts
** failing, it fails consistently until mallocFailed is reset.
** This is an important assumption.  There are many places in the
** code that do things like this:
**
**         int *a = (int*)sqlite3DbMallocRaw(db, 100);
**         int *b = (int*)sqlite3DbMallocRaw(db, 200);
**         if( b ) a[10] = 9;
**
** In other words, if a subsequent malloc (ex: "b") worked, it is assumed
** that all prior mallocs (ex: "a") worked too.
**
** The sqlite3MallocRawNN() variant guarantees that the "db" parameter is
** not a NULL pointer.
*/
SQLITE_PRIVATE void *sqlite3DbMallocRaw(sqlite3 *db, u64 n){
  void *p;
  if( db ) return sqlite3DbMallocRawNN(db, n);
  assert( db==0 || sqlite3_mutex_held(db->mutex) );
  p = sqlite3Malloc(n);
  assert( db==0 || db->pnBytesFreed==0 );
  sqlite3MemdebugSetType(p, MEMTYPE_HEAP);
  return p;
}
SQLITE_PRIVATE void *sqlite3DbMallocRawNN(sqlite3 *db, u64 n){
#ifndef SQLITE_OMIT_LOOKASIDE
  if( db ){
    LookasideSlot *pBuf;
    if( db->mallocFailed ){
      return 0;
  LookasideSlot *pBuf;
  assert( db!=0 );
  assert( sqlite3_mutex_held(db->mutex) );
  assert( db->pnBytesFreed==0 );
    }
    if( db->lookaside.bEnabled ){
      if( n>db->lookaside.sz ){
        db->lookaside.anStat[1]++;
      }else if( (pBuf = db->lookaside.pFree)==0 ){
        db->lookaside.anStat[2]++;
      }else{
        db->lookaside.pFree = pBuf->pNext;
        db->lookaside.nOut++;
        db->lookaside.anStat[0]++;
        if( db->lookaside.nOut>db->lookaside.mxOut ){
          db->lookaside.mxOut = db->lookaside.nOut;
        }
        return (void*)pBuf;
      }
    }
  if( db->lookaside.bDisable==0 ){
    assert( db->mallocFailed==0 );
    if( n>db->lookaside.sz ){
      db->lookaside.anStat[1]++;
    }else if( (pBuf = db->lookaside.pFree)==0 ){
      db->lookaside.anStat[2]++;
    }else{
      db->lookaside.pFree = pBuf->pNext;
      db->lookaside.nOut++;
      db->lookaside.anStat[0]++;
      if( db->lookaside.nOut>db->lookaside.mxOut ){
        db->lookaside.mxOut = db->lookaside.nOut;
      }
      return (void*)pBuf;
    }
  }else if( db->mallocFailed ){
    return 0;
  }
  }
#else
  assert( db!=0 );
  assert( sqlite3_mutex_held(db->mutex) );
  assert( db->pnBytesFreed==0 );
  if( db && db->mallocFailed ){
  if( db->mallocFailed ){
    return 0;
  }
#endif
  p = sqlite3Malloc(n);
  return dbMallocRawFinish(db, n);
  if( !p && db ){
    db->mallocFailed = 1;
  }
}
  sqlite3MemdebugSetType(p, 
         (db && db->lookaside.bEnabled) ? MEMTYPE_LOOKASIDE : MEMTYPE_HEAP);
  return p;
}

/* Forward declaration */
static SQLITE_NOINLINE void *dbReallocFinish(sqlite3 *db, void *p, u64 n);

/*
** Resize the block of memory pointed to by p to n bytes. If the
** resize fails, set the mallocFailed flag in the connection object.
*/
SQLITE_PRIVATE void *sqlite3DbRealloc(sqlite3 *db, void *p, u64 n){
  assert( db!=0 );
  if( p==0 ) return sqlite3DbMallocRawNN(db, n);
  assert( sqlite3_mutex_held(db->mutex) );
  if( isLookaside(db,p) && n<=db->lookaside.sz ) return p;
  return dbReallocFinish(db, p, n);
}
static SQLITE_NOINLINE void *dbReallocFinish(sqlite3 *db, void *p, u64 n){
  void *pNew = 0;
  assert( db!=0 );
  assert( sqlite3_mutex_held(db->mutex) );
  assert( p!=0 );
  if( db->mallocFailed==0 ){
    if( p==0 ){
      return sqlite3DbMallocRaw(db, n);
    }
    if( isLookaside(db, p) ){
      if( n<=db->lookaside.sz ){
        return p;
      }
      pNew = sqlite3DbMallocRaw(db, n);
      pNew = sqlite3DbMallocRawNN(db, n);
      if( pNew ){
        memcpy(pNew, p, db->lookaside.sz);
        sqlite3DbFree(db, p);
      }
    }else{
      assert( sqlite3MemdebugHasType(p, (MEMTYPE_LOOKASIDE|MEMTYPE_HEAP)) );
      assert( sqlite3MemdebugNoType(p, (u8)~(MEMTYPE_LOOKASIDE|MEMTYPE_HEAP)) );
      sqlite3MemdebugSetType(p, MEMTYPE_HEAP);
      pNew = sqlite3_realloc64(p, n);
      if( !pNew ){
        db->mallocFailed = 1;
        sqlite3OomFault(db);
      }
      sqlite3MemdebugSetType(pNew,
            (db->lookaside.bEnabled ? MEMTYPE_LOOKASIDE : MEMTYPE_HEAP));
            (db->lookaside.bDisable==0 ? MEMTYPE_LOOKASIDE : MEMTYPE_HEAP));
    }
  }
  return pNew;
}

/*
** Attempt to reallocate p.  If the reallocation fails, then free p

  if( zNew ){
    memcpy(zNew, z, n);
  }
  return zNew;
}
SQLITE_PRIVATE char *sqlite3DbStrNDup(sqlite3 *db, const char *z, u64 n){
  char *zNew;
  assert( db!=0 );
  if( z==0 ){
    return 0;
  }
  assert( (n&0x7fffffff)==n );
  zNew = sqlite3DbMallocRaw(db, n+1);
  zNew = sqlite3DbMallocRawNN(db, n+1);
  if( zNew ){
    memcpy(zNew, z, (size_t)n);
    zNew[n] = 0;
  }
  return zNew;
}

/*
** Free any prior content in *pz and replace it with a copy of zNew.
*/
SQLITE_PRIVATE void sqlite3SetString(char **pz, sqlite3 *db, const char *zNew){
  sqlite3DbFree(db, *pz);
  *pz = sqlite3DbStrDup(db, zNew);
}

/*
** Call this routine to record the fact that an OOM (out-of-memory) error
** has happened.  This routine will set db->mallocFailed, and also
** temporarily disable the lookaside memory allocator and interrupt
** any running VDBEs.
*/
SQLITE_PRIVATE void sqlite3OomFault(sqlite3 *db){
  if( db->mallocFailed==0 && db->bBenignMalloc==0 ){
    db->mallocFailed = 1;
    if( db->nVdbeExec>0 ){
      db->u1.isInterrupted = 1;
    }
    db->lookaside.bDisable++;
  }
}

/*
** This routine reactivates the memory allocator and clears the
** db->mallocFailed flag as necessary.
**
** The memory allocator is not restarted if there are running
** VDBEs.
*/
SQLITE_PRIVATE void sqlite3OomClear(sqlite3 *db){
  if( db->mallocFailed && db->nVdbeExec==0 ){
    db->mallocFailed = 0;
    db->u1.isInterrupted = 0;
    assert( db->lookaside.bDisable>0 );
    db->lookaside.bDisable--;
  }
}

/*
** Take actions at the end of an API call to indicate an OOM error
*/
static SQLITE_NOINLINE int apiOomError(sqlite3 *db){
  db->mallocFailed = 0;
  sqlite3OomClear(db);
  sqlite3Error(db, SQLITE_NOMEM);
  return SQLITE_NOMEM;
}

/*
** This function must be called before exiting any API function (i.e. 
** returning control to the user) that has called sqlite3_malloc or

#define etBUFSIZE SQLITE_PRINT_BUF_SIZE  /* Size of the output buffer */

/*
** Render a string given by "fmt" into the StrAccum object.
*/
SQLITE_PRIVATE void sqlite3VXPrintf(
  StrAccum *pAccum,          /* Accumulate results here */
  u32 bFlags,                /* SQLITE_PRINTF_* flags */
  const char *fmt,           /* Format string */
  va_list ap                 /* arguments */
){
  int c;                     /* Next character in the format string */
  char *bufpt;               /* Pointer to the conversion buffer */
  int precision;             /* Precision of the current field */
  int length;                /* Length of the field */

  etByte flag_dp;            /* True if decimal point should be shown */
  etByte flag_rtz;           /* True if trailing zeros should be removed */
#endif
  PrintfArguments *pArgList = 0; /* Arguments for SQLITE_PRINTF_SQLFUNC */
  char buf[etBUFSIZE];       /* Conversion buffer */

  bufpt = 0;
  if( bFlags ){
    if( (bArgList = (bFlags & SQLITE_PRINTF_SQLFUNC))!=0 ){
  if( pAccum->printfFlags ){
    if( (bArgList = (pAccum->printfFlags & SQLITE_PRINTF_SQLFUNC))!=0 ){
      pArgList = va_arg(ap, PrintfArguments*);
    }
    useIntern = bFlags & SQLITE_PRINTF_INTERNAL;
    useIntern = pAccum->printfFlags & SQLITE_PRINTF_INTERNAL;
  }else{
    bArgList = useIntern = 0;
  }
  for(; (c=(*fmt))!=0; ++fmt){
    if( c!='%' ){
      bufpt = (char *)fmt;
#if HAVE_STRCHRNUL

    return 0;
  }
  if( p->mxAlloc==0 ){
    N = p->nAlloc - p->nChar - 1;
    setStrAccumError(p, STRACCUM_TOOBIG);
    return N;
  }else{
    char *zOld = p->bMalloced ? p->zText : 0;
    char *zOld = isMalloced(p) ? p->zText : 0;
    i64 szNew = p->nChar;
    assert( (p->zText==0 || p->zText==p->zBase)==(p->bMalloced==0) );
    assert( (p->zText==0 || p->zText==p->zBase)==!isMalloced(p) );
    szNew += N + 1;
    if( szNew+p->nChar<=p->mxAlloc ){
      /* Force exponential buffer size growth as long as it does not overflow,
      ** to avoid having to call this routine too often */
      szNew += p->nChar;
    }
    if( szNew > p->mxAlloc ){
      sqlite3StrAccumReset(p);
      setStrAccumError(p, STRACCUM_TOOBIG);
      return 0;
    }else{
      p->nAlloc = (int)szNew;
    }
    if( p->db ){
      zNew = sqlite3DbRealloc(p->db, zOld, p->nAlloc);
    }else{
      zNew = sqlite3_realloc64(zOld, p->nAlloc);
    }
    if( zNew ){
      assert( p->zText!=0 || p->nChar==0 );
      if( !p->bMalloced && p->nChar>0 ) memcpy(zNew, p->zText, p->nChar);
      if( !isMalloced(p) && p->nChar>0 ) memcpy(zNew, p->zText, p->nChar);
      p->zText = zNew;
      p->nAlloc = sqlite3DbMallocSize(p->db, zNew);
      p->bMalloced = 1;
      p->printfFlags |= SQLITE_PRINTF_MALLOCED;
    }else{
      sqlite3StrAccumReset(p);
      setStrAccumError(p, STRACCUM_NOMEM);
      return 0;
    }
  }
  return N;
}

/*
** Append N copies of character c to the given string buffer.
*/
SQLITE_PRIVATE void sqlite3AppendChar(StrAccum *p, int N, char c){
  testcase( p->nChar + (i64)N > 0x7fffffff );
  if( p->nChar+(i64)N >= p->nAlloc && (N = sqlite3StrAccumEnlarge(p, N))<=0 ){
    return;
  }
  assert( (p->zText==p->zBase)==(p->bMalloced==0) );
  assert( (p->zText==p->zBase)==!isMalloced(p) );
  while( (N--)>0 ) p->zText[p->nChar++] = c;
}

/*
** The StrAccum "p" is not large enough to accept N new bytes of z[].
** So enlarge if first, then do the append.
**
** This is a helper routine to sqlite3StrAccumAppend() that does special-case
** work (enlarging the buffer) using tail recursion, so that the
** sqlite3StrAccumAppend() routine can use fast calling semantics.
*/
static void SQLITE_NOINLINE enlargeAndAppend(StrAccum *p, const char *z, int N){
  N = sqlite3StrAccumEnlarge(p, N);
  if( N>0 ){
    memcpy(&p->zText[p->nChar], z, N);
    p->nChar += N;
  }
  assert( (p->zText==0 || p->zText==p->zBase)==(p->bMalloced==0) );
  assert( (p->zText==0 || p->zText==p->zBase)==!isMalloced(p) );
}

/*
** Append N bytes of text from z to the StrAccum object.  Increase the
** size of the memory allocation for StrAccum if necessary.
*/
SQLITE_PRIVATE void sqlite3StrAccumAppend(StrAccum *p, const char *z, int N){

/*
** Finish off a string by making sure it is zero-terminated.
** Return a pointer to the resulting string.  Return a NULL
** pointer if any kind of error was encountered.
*/
SQLITE_PRIVATE char *sqlite3StrAccumFinish(StrAccum *p){
  if( p->zText ){
    assert( (p->zText==p->zBase)==(p->bMalloced==0) );
    assert( (p->zText==p->zBase)==!isMalloced(p) );
    p->zText[p->nChar] = 0;
    if( p->mxAlloc>0 && p->bMalloced==0 ){
    if( p->mxAlloc>0 && !isMalloced(p) ){
      p->zText = sqlite3DbMallocRaw(p->db, p->nChar+1 );
      if( p->zText ){
        memcpy(p->zText, p->zBase, p->nChar+1);
        p->bMalloced = 1;
        p->printfFlags |= SQLITE_PRINTF_MALLOCED;
      }else{
        setStrAccumError(p, STRACCUM_NOMEM);
      }
    }
  }
  return p->zText;
}

/*
** Reset an StrAccum string.  Reclaim all malloced memory.
*/
SQLITE_PRIVATE void sqlite3StrAccumReset(StrAccum *p){
  assert( (p->zText==0 || p->zText==p->zBase)==(p->bMalloced==0) );
  if( p->bMalloced ){
  assert( (p->zText==0 || p->zText==p->zBase)==!isMalloced(p) );
  if( isMalloced(p) ){
    sqlite3DbFree(p->db, p->zText);
    p->bMalloced = 0;
    p->printfFlags &= ~SQLITE_PRINTF_MALLOCED;
  }
  p->zText = 0;
}

/*
** Initialize a string accumulator.
**

SQLITE_PRIVATE void sqlite3StrAccumInit(StrAccum *p, sqlite3 *db, char *zBase, int n, int mx){
  p->zText = p->zBase = zBase;
  p->db = db;
  p->nChar = 0;
  p->nAlloc = n;
  p->mxAlloc = mx;
  p->accError = 0;
  p->bMalloced = 0;
  p->printfFlags = 0;
}

/*
** Print into memory obtained from sqliteMalloc().  Use the internal
** %-conversion extensions.
*/
SQLITE_PRIVATE char *sqlite3VMPrintf(sqlite3 *db, const char *zFormat, va_list ap){
  char *z;
  char zBase[SQLITE_PRINT_BUF_SIZE];
  StrAccum acc;
  assert( db!=0 );
  sqlite3StrAccumInit(&acc, db, zBase, sizeof(zBase),
                      db->aLimit[SQLITE_LIMIT_LENGTH]);
  acc.printfFlags = SQLITE_PRINTF_INTERNAL;
  sqlite3VXPrintf(&acc, SQLITE_PRINTF_INTERNAL, zFormat, ap);
  sqlite3VXPrintf(&acc, zFormat, ap);
  z = sqlite3StrAccumFinish(&acc);
  if( acc.accError==STRACCUM_NOMEM ){
    db->mallocFailed = 1;
    sqlite3OomFault(db);
  }
  return z;
}

/*
** Print into memory obtained from sqliteMalloc().  Use the internal
** %-conversion extensions.

    return 0;
  }
#endif
#ifndef SQLITE_OMIT_AUTOINIT
  if( sqlite3_initialize() ) return 0;
#endif
  sqlite3StrAccumInit(&acc, 0, zBase, sizeof(zBase), SQLITE_MAX_LENGTH);
  sqlite3VXPrintf(&acc, 0, zFormat, ap);
  sqlite3VXPrintf(&acc, zFormat, ap);
  z = sqlite3StrAccumFinish(&acc);
  return z;
}

/*
** Print into memory obtained from sqlite3_malloc()().  Omit the internal
** %-conversion extensions.

  if( zBuf==0 || zFormat==0 ) {
    (void)SQLITE_MISUSE_BKPT;
    if( zBuf ) zBuf[0] = 0;
    return zBuf;
  }
#endif
  sqlite3StrAccumInit(&acc, 0, zBuf, n, 0);
  sqlite3VXPrintf(&acc, 0, zFormat, ap);
  sqlite3VXPrintf(&acc, zFormat, ap);
  return sqlite3StrAccumFinish(&acc);
}
SQLITE_API char *SQLITE_CDECL sqlite3_snprintf(int n, char *zBuf, const char *zFormat, ...){
  char *z;
  va_list ap;
  va_start(ap,zFormat);
  z = sqlite3_vsnprintf(n, zBuf, zFormat, ap);

** memory mutex is held do not use these mechanisms.
*/
static void renderLogMsg(int iErrCode, const char *zFormat, va_list ap){
  StrAccum acc;                          /* String accumulator */
  char zMsg[SQLITE_PRINT_BUF_SIZE*3];    /* Complete log message */

  sqlite3StrAccumInit(&acc, 0, zMsg, sizeof(zMsg), 0);
  sqlite3VXPrintf(&acc, 0, zFormat, ap);
  sqlite3VXPrintf(&acc, zFormat, ap);
  sqlite3GlobalConfig.xLog(sqlite3GlobalConfig.pLogArg, iErrCode,
                           sqlite3StrAccumFinish(&acc));
}

/*
** Format and write a message to the log if logging is enabled.
*/

*/
SQLITE_PRIVATE void sqlite3DebugPrintf(const char *zFormat, ...){
  va_list ap;
  StrAccum acc;
  char zBuf[500];
  sqlite3StrAccumInit(&acc, 0, zBuf, sizeof(zBuf), 0);
  va_start(ap,zFormat);
  sqlite3VXPrintf(&acc, 0, zFormat, ap);
  sqlite3VXPrintf(&acc, zFormat, ap);
  va_end(ap);
  sqlite3StrAccumFinish(&acc);
  fprintf(stdout,"%s", zBuf);
  fflush(stdout);
}
#endif


/*
** variable-argument wrapper around sqlite3VXPrintf().  The bFlags argument
** can contain the bit SQLITE_PRINTF_INTERNAL enable internal formats.
*/
SQLITE_PRIVATE void sqlite3XPrintf(StrAccum *p, u32 bFlags, const char *zFormat, ...){
SQLITE_PRIVATE void sqlite3XPrintf(StrAccum *p, const char *zFormat, ...){
  va_list ap;
  va_start(ap,zFormat);
  sqlite3VXPrintf(p, bFlags, zFormat, ap);
  sqlite3VXPrintf(p, zFormat, ap);
  va_end(ap);
}

/************** End of printf.c **********************************************/
/************** Begin file treeview.c ****************************************/
/*
** 2015-06-08

  if( p ){
    for(i=0; i<p->iLevel && i<sizeof(p->bLine)-1; i++){
      sqlite3StrAccumAppend(&acc, p->bLine[i] ? "|   " : "    ", 4);
    }
    sqlite3StrAccumAppend(&acc, p->bLine[i] ? "|-- " : "'-- ", 4);
  }
  va_start(ap, zFormat);
  sqlite3VXPrintf(&acc, 0, zFormat, ap);
  sqlite3VXPrintf(&acc, zFormat, ap);
  va_end(ap);
  if( zBuf[acc.nChar-1]!='\n' ) sqlite3StrAccumAppend(&acc, "\n", 1);
  sqlite3StrAccumFinish(&acc);
  fprintf(stdout,"%s", zBuf);
  fflush(stdout);
}

  if( pWith->nCte>0 ){
    pView = sqlite3TreeViewPush(pView, 1);
    for(i=0; i<pWith->nCte; i++){
      StrAccum x;
      char zLine[1000];
      const struct Cte *pCte = &pWith->a[i];
      sqlite3StrAccumInit(&x, 0, zLine, sizeof(zLine), 0);
      sqlite3XPrintf(&x, 0, "%s", pCte->zName);
      sqlite3XPrintf(&x, "%s", pCte->zName);
      if( pCte->pCols && pCte->pCols->nExpr>0 ){
        char cSep = '(';
        int j;
        for(j=0; j<pCte->pCols->nExpr; j++){
          sqlite3XPrintf(&x, 0, "%c%s", cSep, pCte->pCols->a[j].zName);
          sqlite3XPrintf(&x, "%c%s", cSep, pCte->pCols->a[j].zName);
          cSep = ',';
        }
        sqlite3XPrintf(&x, 0, ")");
        sqlite3XPrintf(&x, ")");
      }
      sqlite3XPrintf(&x, 0, " AS");
      sqlite3XPrintf(&x, " AS");
      sqlite3StrAccumFinish(&x);
      sqlite3TreeViewItem(pView, zLine, i<pWith->nCte-1);
      sqlite3TreeViewSelect(pView, pCte->pSelect, 0);
      sqlite3TreeViewPop(pView);
    }
    sqlite3TreeViewPop(pView);
  }

      pView = sqlite3TreeViewPush(pView, (n--)>0);
      sqlite3TreeViewLine(pView, "FROM");
      for(i=0; i<p->pSrc->nSrc; i++){
        struct SrcList_item *pItem = &p->pSrc->a[i];
        StrAccum x;
        char zLine[100];
        sqlite3StrAccumInit(&x, 0, zLine, sizeof(zLine), 0);
        sqlite3XPrintf(&x, 0, "{%d,*}", pItem->iCursor);
        sqlite3XPrintf(&x, "{%d,*}", pItem->iCursor);
        if( pItem->zDatabase ){
          sqlite3XPrintf(&x, 0, " %s.%s", pItem->zDatabase, pItem->zName);
          sqlite3XPrintf(&x, " %s.%s", pItem->zDatabase, pItem->zName);
        }else if( pItem->zName ){
          sqlite3XPrintf(&x, 0, " %s", pItem->zName);
          sqlite3XPrintf(&x, " %s", pItem->zName);
        }
        if( pItem->pTab ){
          sqlite3XPrintf(&x, 0, " tabname=%Q", pItem->pTab->zName);
          sqlite3XPrintf(&x, " tabname=%Q", pItem->pTab->zName);
        }
        if( pItem->zAlias ){
          sqlite3XPrintf(&x, 0, " (AS %s)", pItem->zAlias);
          sqlite3XPrintf(&x, " (AS %s)", pItem->zAlias);
        }
        if( pItem->fg.jointype & JT_LEFT ){
          sqlite3XPrintf(&x, 0, " LEFT-JOIN");
          sqlite3XPrintf(&x, " LEFT-JOIN");
        }
        sqlite3StrAccumFinish(&x);
        sqlite3TreeViewItem(pView, zLine, i<p->pSrc->nSrc-1); 
        if( pItem->pSelect ){
          sqlite3TreeViewSelect(pView, pItem->pSelect, 0);
        }
        if( pItem->fg.isTabFunc ){

    pMem->n = (int)(z - zOut);
  }
  *z = 0;
  assert( (pMem->n+(desiredEnc==SQLITE_UTF8?1:2))<=len );

  c = pMem->flags;
  sqlite3VdbeMemRelease(pMem);
  pMem->flags = MEM_Str|MEM_Term|(c&MEM_AffMask);
  pMem->flags = MEM_Str|MEM_Term|(c&(MEM_AffMask|MEM_Subtype));
  pMem->enc = desiredEnc;
  pMem->z = (char*)zOut;
  pMem->zMalloc = pMem->z;
  pMem->szMalloc = sqlite3DbMallocSize(pMem->db, pMem->z);

translate_out:
#if defined(TRANSLATE_TRACE) && defined(SQLITE_DEBUG)

    }else{
      z[j++] = z[i];
    }
  }
  z[j] = 0;
  return j;
}

/*
** Generate a Token object from a string
*/
SQLITE_PRIVATE void sqlite3TokenInit(Token *p, char *z){
  p->z = z;
  p->n = sqlite3Strlen30(z);
}

/* Convenient short-hand */
#define UpperToLower sqlite3UpperToLower

/*
** Some systems have stricmp().  Others have strcasecmp().  Because
** there is no consistency, we will define our own.

** binary value has been obtained from malloc and must be freed by
** the calling routine.
*/
SQLITE_PRIVATE void *sqlite3HexToBlob(sqlite3 *db, const char *z, int n){
  char *zBlob;
  int i;

  zBlob = (char *)sqlite3DbMallocRaw(db, n/2 + 1);
  zBlob = (char *)sqlite3DbMallocRawNN(db, n/2 + 1);
  n--;
  if( zBlob ){
    for(i=0; i<n; i+=2){
      zBlob[i/2] = (sqlite3HexToInt(z[i])<<4) | sqlite3HexToInt(z[i+1]);
    }
    zBlob[i/2] = 0;
  }

 || defined(SQLITE_DEBUG)
#if defined(SQLITE_ENABLE_EXPLAIN_COMMENTS) || defined(SQLITE_DEBUG)
# define OpHelp(X) "\0" X
#else
# define OpHelp(X)
#endif
SQLITE_PRIVATE const char *sqlite3OpcodeName(int i){
 static const char *const azName[] = { "?",
    /*   1 */ "Savepoint"        OpHelp(""),
    /*   2 */ "AutoCommit"       OpHelp(""),
    /*   3 */ "Transaction"      OpHelp(""),
    /*   4 */ "SorterNext"       OpHelp(""),
    /*   5 */ "PrevIfOpen"       OpHelp(""),
    /*   6 */ "NextIfOpen"       OpHelp(""),
    /*   7 */ "Prev"             OpHelp(""),
    /*   8 */ "Next"             OpHelp(""),
    /*   9 */ "Checkpoint"       OpHelp(""),
    /*  10 */ "JournalMode"      OpHelp(""),
    /*  11 */ "Vacuum"           OpHelp(""),
    /*  12 */ "VFilter"          OpHelp("iplan=r[P3] zplan='P4'"),
    /*  13 */ "VUpdate"          OpHelp("data=r[P3@P2]"),
    /*  14 */ "Goto"             OpHelp(""),
    /*  15 */ "Gosub"            OpHelp(""),
    /*  16 */ "Return"           OpHelp(""),
    /*  17 */ "InitCoroutine"    OpHelp(""),
    /*  18 */ "EndCoroutine"     OpHelp(""),
 static const char *const azName[] = {
    /*   0 */ "Savepoint"        OpHelp(""),
    /*   1 */ "AutoCommit"       OpHelp(""),
    /*   2 */ "Transaction"      OpHelp(""),
    /*   3 */ "SorterNext"       OpHelp(""),
    /*   4 */ "PrevIfOpen"       OpHelp(""),
    /*   5 */ "NextIfOpen"       OpHelp(""),
    /*   6 */ "Prev"             OpHelp(""),
    /*   7 */ "Next"             OpHelp(""),
    /*   8 */ "Checkpoint"       OpHelp(""),
    /*   9 */ "JournalMode"      OpHelp(""),
    /*  10 */ "Vacuum"           OpHelp(""),
    /*  11 */ "VFilter"          OpHelp("iplan=r[P3] zplan='P4'"),
    /*  12 */ "VUpdate"          OpHelp("data=r[P3@P2]"),
    /*  13 */ "Goto"             OpHelp(""),
    /*  14 */ "Gosub"            OpHelp(""),
    /*  15 */ "Return"           OpHelp(""),
    /*  16 */ "InitCoroutine"    OpHelp(""),
    /*  17 */ "EndCoroutine"     OpHelp(""),
    /*  18 */ "Yield"            OpHelp(""),
    /*  19 */ "Not"              OpHelp("r[P2]= !r[P1]"),
    /*  20 */ "Yield"            OpHelp(""),
    /*  21 */ "HaltIfNull"       OpHelp("if r[P3]=null halt"),
    /*  22 */ "Halt"             OpHelp(""),
    /*  23 */ "Integer"          OpHelp("r[P2]=P1"),
    /*  24 */ "Int64"            OpHelp("r[P2]=P4"),
    /*  25 */ "String"           OpHelp("r[P2]='P4' (len=P1)"),
    /*  26 */ "Null"             OpHelp("r[P2..P3]=NULL"),
    /*  27 */ "SoftNull"         OpHelp("r[P1]=NULL"),
    /*  28 */ "Blob"             OpHelp("r[P2]=P4 (len=P1)"),
    /*  29 */ "Variable"         OpHelp("r[P2]=parameter(P1,P4)"),
    /*  30 */ "Move"             OpHelp("r[P2@P3]=r[P1@P3]"),
    /*  31 */ "Copy"             OpHelp("r[P2@P3+1]=r[P1@P3+1]"),
    /*  32 */ "SCopy"            OpHelp("r[P2]=r[P1]"),
    /*  33 */ "IntCopy"          OpHelp("r[P2]=r[P1]"),
    /*  34 */ "ResultRow"        OpHelp("output=r[P1@P2]"),
    /*  35 */ "CollSeq"          OpHelp(""),
    /*  36 */ "Function0"        OpHelp("r[P3]=func(r[P2@P5])"),
    /*  37 */ "Function"         OpHelp("r[P3]=func(r[P2@P5])"),
    /*  38 */ "AddImm"           OpHelp("r[P1]=r[P1]+P2"),
    /*  39 */ "MustBeInt"        OpHelp(""),
    /*  40 */ "RealAffinity"     OpHelp(""),
    /*  41 */ "Cast"             OpHelp("affinity(r[P1])"),
    /*  42 */ "Permutation"      OpHelp(""),
    /*  43 */ "Compare"          OpHelp("r[P1@P3] <-> r[P2@P3]"),
    /*  44 */ "Jump"             OpHelp(""),
    /*  45 */ "Once"             OpHelp(""),
    /*  46 */ "If"               OpHelp(""),
    /*  47 */ "IfNot"            OpHelp(""),
    /*  48 */ "Column"           OpHelp("r[P3]=PX"),
    /*  49 */ "Affinity"         OpHelp("affinity(r[P1@P2])"),
    /*  50 */ "MakeRecord"       OpHelp("r[P3]=mkrec(r[P1@P2])"),
    /*  51 */ "Count"            OpHelp("r[P2]=count()"),
    /*  52 */ "ReadCookie"       OpHelp(""),
    /*  53 */ "SetCookie"        OpHelp(""),
    /*  54 */ "ReopenIdx"        OpHelp("root=P2 iDb=P3"),
    /*  55 */ "OpenRead"         OpHelp("root=P2 iDb=P3"),
    /*  56 */ "OpenWrite"        OpHelp("root=P2 iDb=P3"),
    /*  57 */ "OpenAutoindex"    OpHelp("nColumn=P2"),
    /*  58 */ "OpenEphemeral"    OpHelp("nColumn=P2"),
    /*  59 */ "SorterOpen"       OpHelp(""),
    /*  60 */ "SequenceTest"     OpHelp("if( cursor[P1].ctr++ ) pc = P2"),
    /*  61 */ "OpenPseudo"       OpHelp("P3 columns in r[P2]"),
    /*  62 */ "Close"            OpHelp(""),
    /*  63 */ "ColumnsUsed"      OpHelp(""),
    /*  64 */ "SeekLT"           OpHelp("key=r[P3@P4]"),
    /*  65 */ "SeekLE"           OpHelp("key=r[P3@P4]"),
    /*  66 */ "SeekGE"           OpHelp("key=r[P3@P4]"),
    /*  67 */ "SeekGT"           OpHelp("key=r[P3@P4]"),
    /*  20 */ "HaltIfNull"       OpHelp("if r[P3]=null halt"),
    /*  21 */ "Halt"             OpHelp(""),
    /*  22 */ "Integer"          OpHelp("r[P2]=P1"),
    /*  23 */ "Int64"            OpHelp("r[P2]=P4"),
    /*  24 */ "String"           OpHelp("r[P2]='P4' (len=P1)"),
    /*  25 */ "Null"             OpHelp("r[P2..P3]=NULL"),
    /*  26 */ "SoftNull"         OpHelp("r[P1]=NULL"),
    /*  27 */ "Blob"             OpHelp("r[P2]=P4 (len=P1)"),
    /*  28 */ "Variable"         OpHelp("r[P2]=parameter(P1,P4)"),
    /*  29 */ "Move"             OpHelp("r[P2@P3]=r[P1@P3]"),
    /*  30 */ "Copy"             OpHelp("r[P2@P3+1]=r[P1@P3+1]"),
    /*  31 */ "SCopy"            OpHelp("r[P2]=r[P1]"),
    /*  32 */ "IntCopy"          OpHelp("r[P2]=r[P1]"),
    /*  33 */ "ResultRow"        OpHelp("output=r[P1@P2]"),
    /*  34 */ "CollSeq"          OpHelp(""),
    /*  35 */ "Function0"        OpHelp("r[P3]=func(r[P2@P5])"),
    /*  36 */ "Function"         OpHelp("r[P3]=func(r[P2@P5])"),
    /*  37 */ "AddImm"           OpHelp("r[P1]=r[P1]+P2"),
    /*  38 */ "MustBeInt"        OpHelp(""),
    /*  39 */ "RealAffinity"     OpHelp(""),
    /*  40 */ "Cast"             OpHelp("affinity(r[P1])"),
    /*  41 */ "Permutation"      OpHelp(""),
    /*  42 */ "Compare"          OpHelp("r[P1@P3] <-> r[P2@P3]"),
    /*  43 */ "Jump"             OpHelp(""),
    /*  44 */ "Once"             OpHelp(""),
    /*  45 */ "If"               OpHelp(""),
    /*  46 */ "IfNot"            OpHelp(""),
    /*  47 */ "Column"           OpHelp("r[P3]=PX"),
    /*  48 */ "Affinity"         OpHelp("affinity(r[P1@P2])"),
    /*  49 */ "MakeRecord"       OpHelp("r[P3]=mkrec(r[P1@P2])"),
    /*  50 */ "Count"            OpHelp("r[P2]=count()"),
    /*  51 */ "ReadCookie"       OpHelp(""),
    /*  52 */ "SetCookie"        OpHelp(""),
    /*  53 */ "ReopenIdx"        OpHelp("root=P2 iDb=P3"),
    /*  54 */ "OpenRead"         OpHelp("root=P2 iDb=P3"),
    /*  55 */ "OpenWrite"        OpHelp("root=P2 iDb=P3"),
    /*  56 */ "OpenAutoindex"    OpHelp("nColumn=P2"),
    /*  57 */ "OpenEphemeral"    OpHelp("nColumn=P2"),
    /*  58 */ "SorterOpen"       OpHelp(""),
    /*  59 */ "SequenceTest"     OpHelp("if( cursor[P1].ctr++ ) pc = P2"),
    /*  60 */ "OpenPseudo"       OpHelp("P3 columns in r[P2]"),
    /*  61 */ "Close"            OpHelp(""),
    /*  62 */ "ColumnsUsed"      OpHelp(""),
    /*  63 */ "SeekLT"           OpHelp("key=r[P3@P4]"),
    /*  64 */ "SeekLE"           OpHelp("key=r[P3@P4]"),
    /*  65 */ "SeekGE"           OpHelp("key=r[P3@P4]"),
    /*  66 */ "SeekGT"           OpHelp("key=r[P3@P4]"),
    /*  68 */ "Seek"             OpHelp("intkey=r[P2]"),
    /*  69 */ "NoConflict"       OpHelp("key=r[P3@P4]"),
    /*  70 */ "NotFound"         OpHelp("key=r[P3@P4]"),
    /*  67 */ "NoConflict"       OpHelp("key=r[P3@P4]"),
    /*  68 */ "NotFound"         OpHelp("key=r[P3@P4]"),
    /*  69 */ "Found"            OpHelp("key=r[P3@P4]"),
    /*  70 */ "NotExists"        OpHelp("intkey=r[P3]"),
    /*  71 */ "Or"               OpHelp("r[P3]=(r[P1] || r[P2])"),
    /*  72 */ "And"              OpHelp("r[P3]=(r[P1] && r[P2])"),
    /*  73 */ "Found"            OpHelp("key=r[P3@P4]"),
    /*  74 */ "NotExists"        OpHelp("intkey=r[P3]"),
    /*  75 */ "Sequence"         OpHelp("r[P2]=cursor[P1].ctr++"),
    /*  73 */ "Sequence"         OpHelp("r[P2]=cursor[P1].ctr++"),
    /*  74 */ "NewRowid"         OpHelp("r[P2]=rowid"),
    /*  75 */ "Insert"           OpHelp("intkey=r[P3] data=r[P2]"),
    /*  76 */ "IsNull"           OpHelp("if r[P1]==NULL goto P2"),
    /*  77 */ "NotNull"          OpHelp("if r[P1]!=NULL goto P2"),
    /*  78 */ "Ne"               OpHelp("if r[P1]!=r[P3] goto P2"),
    /*  79 */ "Eq"               OpHelp("if r[P1]==r[P3] goto P2"),
    /*  80 */ "Gt"               OpHelp("if r[P1]>r[P3] goto P2"),
    /*  81 */ "Le"               OpHelp("if r[P1]<=r[P3] goto P2"),
    /*  82 */ "Lt"               OpHelp("if r[P1]<r[P3] goto P2"),
    /*  83 */ "Ge"               OpHelp("if r[P1]>=r[P3] goto P2"),
    /*  84 */ "NewRowid"         OpHelp("r[P2]=rowid"),
    /*  84 */ "InsertInt"        OpHelp("intkey=P3 data=r[P2]"),
    /*  85 */ "BitAnd"           OpHelp("r[P3]=r[P1]&r[P2]"),
    /*  86 */ "BitOr"            OpHelp("r[P3]=r[P1]|r[P2]"),
    /*  87 */ "ShiftLeft"        OpHelp("r[P3]=r[P2]<<r[P1]"),
    /*  88 */ "ShiftRight"       OpHelp("r[P3]=r[P2]>>r[P1]"),
    /*  89 */ "Add"              OpHelp("r[P3]=r[P1]+r[P2]"),
    /*  90 */ "Subtract"         OpHelp("r[P3]=r[P2]-r[P1]"),
    /*  91 */ "Multiply"         OpHelp("r[P3]=r[P1]*r[P2]"),
    /*  92 */ "Divide"           OpHelp("r[P3]=r[P2]/r[P1]"),
    /*  93 */ "Remainder"        OpHelp("r[P3]=r[P2]%r[P1]"),
    /*  94 */ "Concat"           OpHelp("r[P3]=r[P2]+r[P1]"),
    /*  95 */ "Insert"           OpHelp("intkey=r[P3] data=r[P2]"),
    /*  95 */ "Delete"           OpHelp(""),
    /*  96 */ "BitNot"           OpHelp("r[P1]= ~r[P1]"),
    /*  97 */ "String8"          OpHelp("r[P2]='P4'"),
    /*  98 */ "InsertInt"        OpHelp("intkey=P3 data=r[P2]"),
    /*  99 */ "Delete"           OpHelp(""),
    /* 100 */ "ResetCount"       OpHelp(""),
    /* 101 */ "SorterCompare"    OpHelp("if key(P1)!=trim(r[P3],P4) goto P2"),
    /* 102 */ "SorterData"       OpHelp("r[P2]=data"),
    /* 103 */ "RowKey"           OpHelp("r[P2]=key"),
    /* 104 */ "RowData"          OpHelp("r[P2]=data"),
    /* 105 */ "Rowid"            OpHelp("r[P2]=rowid"),
    /* 106 */ "NullRow"          OpHelp(""),
    /* 107 */ "Last"             OpHelp(""),
    /* 108 */ "SorterSort"       OpHelp(""),
    /* 109 */ "Sort"             OpHelp(""),
    /* 110 */ "Rewind"           OpHelp(""),
    /* 111 */ "SorterInsert"     OpHelp(""),
    /* 112 */ "IdxInsert"        OpHelp("key=r[P2]"),
    /* 113 */ "IdxDelete"        OpHelp("key=r[P2@P3]"),
    /* 114 */ "IdxRowid"         OpHelp("r[P2]=rowid"),
    /* 115 */ "IdxLE"            OpHelp("key=r[P3@P4]"),
    /* 116 */ "IdxGT"            OpHelp("key=r[P3@P4]"),
    /* 117 */ "IdxLT"            OpHelp("key=r[P3@P4]"),
    /* 118 */ "IdxGE"            OpHelp("key=r[P3@P4]"),
    /* 119 */ "Destroy"          OpHelp(""),
    /* 120 */ "Clear"            OpHelp(""),
    /* 121 */ "ResetSorter"      OpHelp(""),
    /* 122 */ "CreateIndex"      OpHelp("r[P2]=root iDb=P1"),
    /* 123 */ "CreateTable"      OpHelp("r[P2]=root iDb=P1"),
    /* 124 */ "ParseSchema"      OpHelp(""),
    /* 125 */ "LoadAnalysis"     OpHelp(""),
    /* 126 */ "DropTable"        OpHelp(""),
    /* 127 */ "DropIndex"        OpHelp(""),
    /* 128 */ "DropTrigger"      OpHelp(""),
    /* 129 */ "IntegrityCk"      OpHelp(""),
    /* 130 */ "RowSetAdd"        OpHelp("rowset(P1)=r[P2]"),
    /* 131 */ "RowSetRead"       OpHelp("r[P3]=rowset(P1)"),
    /* 132 */ "RowSetTest"       OpHelp("if r[P3] in rowset(P1) goto P2"),
    /*  98 */ "ResetCount"       OpHelp(""),
    /*  99 */ "SorterCompare"    OpHelp("if key(P1)!=trim(r[P3],P4) goto P2"),
    /* 100 */ "SorterData"       OpHelp("r[P2]=data"),
    /* 101 */ "RowKey"           OpHelp("r[P2]=key"),
    /* 102 */ "RowData"          OpHelp("r[P2]=data"),
    /* 103 */ "Rowid"            OpHelp("r[P2]=rowid"),
    /* 104 */ "NullRow"          OpHelp(""),
    /* 105 */ "Last"             OpHelp(""),
    /* 106 */ "SorterSort"       OpHelp(""),
    /* 107 */ "Sort"             OpHelp(""),
    /* 108 */ "Rewind"           OpHelp(""),
    /* 109 */ "SorterInsert"     OpHelp(""),
    /* 110 */ "IdxInsert"        OpHelp("key=r[P2]"),
    /* 111 */ "IdxDelete"        OpHelp("key=r[P2@P3]"),
    /* 112 */ "Seek"             OpHelp("Move P3 to P1.rowid"),
    /* 113 */ "IdxRowid"         OpHelp("r[P2]=rowid"),
    /* 114 */ "IdxLE"            OpHelp("key=r[P3@P4]"),
    /* 115 */ "IdxGT"            OpHelp("key=r[P3@P4]"),
    /* 116 */ "IdxLT"            OpHelp("key=r[P3@P4]"),
    /* 117 */ "IdxGE"            OpHelp("key=r[P3@P4]"),
    /* 118 */ "Destroy"          OpHelp(""),
    /* 119 */ "Clear"            OpHelp(""),
    /* 120 */ "ResetSorter"      OpHelp(""),
    /* 121 */ "CreateIndex"      OpHelp("r[P2]=root iDb=P1"),
    /* 122 */ "CreateTable"      OpHelp("r[P2]=root iDb=P1"),
    /* 123 */ "ParseSchema"      OpHelp(""),
    /* 124 */ "LoadAnalysis"     OpHelp(""),
    /* 125 */ "DropTable"        OpHelp(""),
    /* 126 */ "DropIndex"        OpHelp(""),
    /* 127 */ "DropTrigger"      OpHelp(""),
    /* 128 */ "IntegrityCk"      OpHelp(""),
    /* 129 */ "RowSetAdd"        OpHelp("rowset(P1)=r[P2]"),
    /* 130 */ "RowSetRead"       OpHelp("r[P3]=rowset(P1)"),
    /* 131 */ "RowSetTest"       OpHelp("if r[P3] in rowset(P1) goto P2"),
    /* 132 */ "Program"          OpHelp(""),
    /* 133 */ "Real"             OpHelp("r[P2]=P4"),
    /* 134 */ "Program"          OpHelp(""),
    /* 135 */ "Param"            OpHelp(""),
    /* 136 */ "FkCounter"        OpHelp("fkctr[P1]+=P2"),
    /* 137 */ "FkIfZero"         OpHelp("if fkctr[P1]==0 goto P2"),
    /* 138 */ "MemMax"           OpHelp("r[P1]=max(r[P1],r[P2])"),
    /* 139 */ "IfPos"            OpHelp("if r[P1]>0 then r[P1]-=P3, goto P2"),
    /* 140 */ "SetIfNotPos"      OpHelp("if r[P1]<=0 then r[P2]=P3"),
    /* 141 */ "IfNotZero"        OpHelp("if r[P1]!=0 then r[P1]-=P3, goto P2"),
    /* 142 */ "DecrJumpZero"     OpHelp("if (--r[P1])==0 goto P2"),
    /* 143 */ "JumpZeroIncr"     OpHelp("if (r[P1]++)==0 ) goto P2"),
    /* 144 */ "AggStep0"         OpHelp("accum=r[P3] step(r[P2@P5])"),
    /* 145 */ "AggStep"          OpHelp("accum=r[P3] step(r[P2@P5])"),
    /* 146 */ "AggFinal"         OpHelp("accum=r[P1] N=P2"),
    /* 147 */ "IncrVacuum"       OpHelp(""),
    /* 148 */ "Expire"           OpHelp(""),
    /* 149 */ "TableLock"        OpHelp("iDb=P1 root=P2 write=P3"),
    /* 150 */ "VBegin"           OpHelp(""),
    /* 151 */ "VCreate"          OpHelp(""),
    /* 152 */ "VDestroy"         OpHelp(""),
    /* 153 */ "VOpen"            OpHelp(""),
    /* 154 */ "VColumn"          OpHelp("r[P3]=vcolumn(P2)"),
    /* 155 */ "VNext"            OpHelp(""),
    /* 156 */ "VRename"          OpHelp(""),
    /* 157 */ "Pagecount"        OpHelp(""),
    /* 158 */ "MaxPgcnt"         OpHelp(""),
    /* 159 */ "Init"             OpHelp("Start at P2"),
    /* 160 */ "CursorHint"       OpHelp(""),
    /* 161 */ "Noop"             OpHelp(""),
    /* 162 */ "Explain"          OpHelp(""),
    /* 134 */ "Param"            OpHelp(""),
    /* 135 */ "FkCounter"        OpHelp("fkctr[P1]+=P2"),
    /* 136 */ "FkIfZero"         OpHelp("if fkctr[P1]==0 goto P2"),
    /* 137 */ "MemMax"           OpHelp("r[P1]=max(r[P1],r[P2])"),
    /* 138 */ "IfPos"            OpHelp("if r[P1]>0 then r[P1]-=P3, goto P2"),
    /* 139 */ "OffsetLimit"      OpHelp("if r[P1]>0 then r[P2]=r[P1]+max(0,r[P3]) else r[P2]=(-1)"),
    /* 140 */ "IfNotZero"        OpHelp("if r[P1]!=0 then r[P1]-=P3, goto P2"),
    /* 141 */ "DecrJumpZero"     OpHelp("if (--r[P1])==0 goto P2"),
    /* 142 */ "JumpZeroIncr"     OpHelp("if (r[P1]++)==0 ) goto P2"),
    /* 143 */ "AggStep0"         OpHelp("accum=r[P3] step(r[P2@P5])"),
    /* 144 */ "AggStep"          OpHelp("accum=r[P3] step(r[P2@P5])"),
    /* 145 */ "AggFinal"         OpHelp("accum=r[P1] N=P2"),
    /* 146 */ "IncrVacuum"       OpHelp(""),
    /* 147 */ "Expire"           OpHelp(""),
    /* 148 */ "TableLock"        OpHelp("iDb=P1 root=P2 write=P3"),
    /* 149 */ "VBegin"           OpHelp(""),
    /* 150 */ "VCreate"          OpHelp(""),
    /* 151 */ "VDestroy"         OpHelp(""),
    /* 152 */ "VOpen"            OpHelp(""),
    /* 153 */ "VColumn"          OpHelp("r[P3]=vcolumn(P2)"),
    /* 154 */ "VNext"            OpHelp(""),
    /* 155 */ "VRename"          OpHelp(""),
    /* 156 */ "Pagecount"        OpHelp(""),
    /* 157 */ "MaxPgcnt"         OpHelp(""),
    /* 158 */ "Init"             OpHelp("Start at P2"),
    /* 159 */ "CursorHint"       OpHelp(""),
    /* 160 */ "Noop"             OpHelp(""),
    /* 161 */ "Explain"          OpHelp(""),
  };
  return azName[i];
}
#endif

/************** End of opcodes.c *********************************************/
/************** Begin file os_unix.c *****************************************/

#endif

/*
** Maximum supported path-length.
*/
#define MAX_PATHNAME 512

/*
** Maximum supported symbolic links
*/
#define SQLITE_MAX_SYMLINKS 100

/* Always cast the getpid() return type for compatibility with
** kernel modules in VxWorks. */
#define osGetpid(X) (pid_t)getpid()

/*
** Only set the lastErrno if the error code is a real error and not 
** a normal expected return code of SQLITE_BUSY or SQLITE_OK

/*
** Macros for performance tracing.  Normally turned off.  Only works
** on i486 hardware.
*/
#ifdef SQLITE_PERFORMANCE_TRACE

/* 
** hwtime.h contains inline assembler code for implementing 
/*
** hwtime.h contains inline assembler code for implementing
** high-performance timing routines.
*/
/************** Include hwtime.h in the middle of os_common.h ****************/
/************** Begin file hwtime.h ******************************************/
/*
** 2008 May 27
**

#endif

/*
** If we compile with the SQLITE_TEST macro set, then the following block
** of code will give us the ability to simulate a disk I/O error.  This
** is used for testing the I/O recovery logic.
*/
#ifdef SQLITE_TEST
SQLITE_API int sqlite3_io_error_hit = 0;            /* Total number of I/O Errors */
SQLITE_API int sqlite3_io_error_hardhit = 0;        /* Number of non-benign errors */
SQLITE_API int sqlite3_io_error_pending = 0;        /* Count down to first I/O error */
SQLITE_API int sqlite3_io_error_persist = 0;        /* True if I/O errors persist */
SQLITE_API int sqlite3_io_error_benign = 0;         /* True if errors are benign */
SQLITE_API int sqlite3_diskfull_pending = 0;
SQLITE_API int sqlite3_diskfull = 0;
#if defined(SQLITE_TEST)
SQLITE_API extern int sqlite3_io_error_hit;
SQLITE_API extern int sqlite3_io_error_hardhit;
SQLITE_API extern int sqlite3_io_error_pending;
SQLITE_API extern int sqlite3_io_error_persist;
SQLITE_API extern int sqlite3_io_error_benign;
SQLITE_API extern int sqlite3_diskfull_pending;
SQLITE_API extern int sqlite3_diskfull;
#define SimulateIOErrorBenign(X) sqlite3_io_error_benign=(X)
#define SimulateIOError(CODE)  \
  if( (sqlite3_io_error_persist && sqlite3_io_error_hit) \
       || sqlite3_io_error_pending-- == 1 )  \
              { local_ioerr(); CODE; }
static void local_ioerr(){
  IOTRACE(("IOERR\n"));

       sqlite3_diskfull_pending--; \
     } \
   }
#else
#define SimulateIOErrorBenign(X)
#define SimulateIOError(A)
#define SimulateDiskfullError(A)
#endif
#endif /* defined(SQLITE_TEST) */

/*
** When testing, keep a count of the number of open files.
*/
#ifdef SQLITE_TEST
SQLITE_API int sqlite3_open_file_count = 0;
#if defined(SQLITE_TEST)
SQLITE_API extern int sqlite3_open_file_count;
#define OpenCounter(X)  sqlite3_open_file_count+=(X)
#else
#define OpenCounter(X)
#endif
#endif /* defined(SQLITE_TEST) */

#endif /* !defined(_OS_COMMON_H_) */

/************** End of os_common.h *******************************************/
/************** Continuing where we left off in os_unix.c ********************/

/*

  { "mkdir",        (sqlite3_syscall_ptr)mkdir,           0 },
#define osMkdir     ((int(*)(const char*,mode_t))aSyscall[18].pCurrent)

  { "rmdir",        (sqlite3_syscall_ptr)rmdir,           0 },
#define osRmdir     ((int(*)(const char*))aSyscall[19].pCurrent)

#if defined(HAVE_FCHOWN)
  { "fchown",       (sqlite3_syscall_ptr)fchown,          0 },
#else
  { "fchown",       (sqlite3_syscall_ptr)0,               0 },
#endif
#define osFchown    ((int(*)(int,uid_t,gid_t))aSyscall[20].pCurrent)

  { "geteuid",      (sqlite3_syscall_ptr)geteuid,         0 },
#define osGeteuid   ((uid_t(*)(void))aSyscall[21].pCurrent)

#if !defined(SQLITE_OMIT_WAL) || SQLITE_MAX_MMAP_SIZE>0
  { "mmap",       (sqlite3_syscall_ptr)mmap,     0 },
  { "mmap",         (sqlite3_syscall_ptr)mmap,            0 },
#else
  { "mmap",         (sqlite3_syscall_ptr)0,               0 },
#endif
#define osMmap ((void*(*)(void*,size_t,int,int,int,off_t))aSyscall[22].pCurrent)

#if !defined(SQLITE_OMIT_WAL) || SQLITE_MAX_MMAP_SIZE>0
  { "munmap",       (sqlite3_syscall_ptr)munmap,          0 },
#else
  { "munmap",       (sqlite3_syscall_ptr)0,               0 },
#endif
#define osMunmap ((void*(*)(void*,size_t))aSyscall[23].pCurrent)

#if HAVE_MREMAP
#if HAVE_MREMAP && (!defined(SQLITE_OMIT_WAL) || SQLITE_MAX_MMAP_SIZE>0)
  { "mremap",       (sqlite3_syscall_ptr)mremap,          0 },
#else
  { "mremap",       (sqlite3_syscall_ptr)0,               0 },
#endif
#define osMremap ((void*(*)(void*,size_t,size_t,int,...))aSyscall[24].pCurrent)

#if !defined(SQLITE_OMIT_WAL) || SQLITE_MAX_MMAP_SIZE>0
  { "getpagesize",  (sqlite3_syscall_ptr)unixGetpagesize, 0 },
#else
  { "getpagesize",  (sqlite3_syscall_ptr)0,               0 },
#endif
#define osGetpagesize ((int(*)(void))aSyscall[25].pCurrent)

#if defined(HAVE_READLINK)
  { "readlink",     (sqlite3_syscall_ptr)readlink,        0 },
#else
  { "readlink",     (sqlite3_syscall_ptr)0,               0 },
#endif
#define osReadlink ((ssize_t(*)(const char*,char*,size_t))aSyscall[26].pCurrent)

#if defined(HAVE_LSTAT)
  { "lstat",         (sqlite3_syscall_ptr)lstat,          0 },
#else
  { "lstat",         (sqlite3_syscall_ptr)0,              0 },
#endif
#define osLstat      ((int(*)(const char*,struct stat*))aSyscall[27].pCurrent)

}; /* End of the overrideable system calls */


/*
** On some systems, calls to fchown() will trigger a message in a security
** log if they come from non-root processes.  So avoid calling fchown() if
** we are not running as root.
*/
static int robustFchown(int fd, uid_t uid, gid_t gid){
#if OS_VXWORKS
  return 0;
#if defined(HAVE_FCHOWN)
  return osGeteuid() ? 0 : osFchown(fd,uid,gid);
#else
  return osGeteuid() ? 0 : osFchown(fd,uid,gid);
  return 0;
#endif
}

/*
** This is the xSetSystemCall() method of sqlite3_vfs for all of the
** "unix" VFSes.  Return SQLITE_OK opon successfully updating the
** system call pointer, or SQLITE_NOTFOUND if there is no configurable

    return rc;
  }
#ifndef SQLITE_DISABLE_DIRSYNC
  if( (dirSync & 1)!=0 ){
    int fd;
    rc = osOpenDirectory(zPath, &fd);
    if( rc==SQLITE_OK ){
#if OS_VXWORKS
      if( fsync(fd)==-1 )
#else
      if( fsync(fd) )
      if( full_fsync(fd,0,0) ){
#endif
      {
        rc = unixLogError(SQLITE_IOERR_DIR_FSYNC, "fsync", zPath);
      }
      robust_close(0, fd, __LINE__);
    }else{
      assert( rc==SQLITE_CANTOPEN );
      rc = SQLITE_OK;
    }

    *pResOut = (0==osStat(zPath, &buf) && buf.st_size>0);
  }else{
    *pResOut = osAccess(zPath, W_OK|R_OK)==0;
  }
  return SQLITE_OK;
}

/*
**
*/
static int mkFullPathname(
  const char *zPath,              /* Input path */
  char *zOut,                     /* Output buffer */
  int nOut                        /* Allocated size of buffer zOut */
){
  int nPath = sqlite3Strlen30(zPath);
  int iOff = 0;
  if( zPath[0]!='/' ){
    if( osGetcwd(zOut, nOut-2)==0 ){
      return unixLogError(SQLITE_CANTOPEN_BKPT, "getcwd", zPath);
    }
    iOff = sqlite3Strlen30(zOut);
    zOut[iOff++] = '/';
  }
  if( (iOff+nPath+1)>nOut ){
    /* SQLite assumes that xFullPathname() nul-terminates the output buffer
    ** even if it returns an error.  */
    zOut[iOff] = '\0';
    return SQLITE_CANTOPEN_BKPT;
  }
  sqlite3_snprintf(nOut-iOff, &zOut[iOff], "%s", zPath);
  return SQLITE_OK;
}

/*
** Turn a relative pathname into a full pathname. The relative path
** is stored as a nul-terminated string in the buffer pointed to by
** zPath. 
**
** zOut points to a buffer of at least sqlite3_vfs.mxPathname bytes 
** (in this case, MAX_PATHNAME bytes). The full-path is written to
** this buffer before returning.
*/
static int unixFullPathname(
  sqlite3_vfs *pVfs,            /* Pointer to vfs object */
  const char *zPath,            /* Possibly relative input path */
  int nOut,                     /* Size of output buffer in bytes */
  char *zOut                    /* Output buffer */
){
#if !defined(HAVE_READLINK) || !defined(HAVE_LSTAT)
  return mkFullPathname(zPath, zOut, nOut);
#else
  int rc = SQLITE_OK;
  int nByte;
  int nLink = 1;                /* Number of symbolic links followed so far */
  const char *zIn = zPath;      /* Input path for each iteration of loop */
  char *zDel = 0;

  assert( pVfs->mxPathname==MAX_PATHNAME );
  UNUSED_PARAMETER(pVfs);

  /* It's odd to simulate an io-error here, but really this is just
  ** using the io-error infrastructure to test that SQLite handles this
  ** function failing. This function could fail if, for example, the
  ** current working directory has been unlinked.
  */
  SimulateIOError( return SQLITE_ERROR );

  assert( pVfs->mxPathname==MAX_PATHNAME );
  do {
  UNUSED_PARAMETER(pVfs);

  /* Attempt to resolve the path as if it were a symbolic link. If it is
  ** a symbolic link, the resolved path is stored in buffer zOut[]. Or, if
    /* Call stat() on path zIn. Set bLink to true if the path is a symbolic
    ** link, or false otherwise.  */
  ** the identified file is not a symbolic link or does not exist, then
  ** zPath is copied directly into zOut. Either way, nByte is left set to
  ** the size of the string copied into zOut[] in bytes.  */
  nByte = osReadlink(zPath, zOut, nOut-1);
  if( nByte<0 ){
    if( errno!=EINVAL && errno!=ENOENT ){
      return unixLogError(SQLITE_CANTOPEN_BKPT, "readlink", zPath);
    }
    int bLink = 0;
    struct stat buf;
    if( osLstat(zIn, &buf)!=0 ){
      if( errno!=ENOENT ){
        rc = unixLogError(SQLITE_CANTOPEN_BKPT, "lstat", zIn);
      }
    sqlite3_snprintf(nOut, zOut, "%s", zPath);
    nByte = sqlite3Strlen30(zOut);
  }else{
    zOut[nByte] = '\0';
  }
    }else{
      bLink = S_ISLNK(buf.st_mode);
    }

  /* If buffer zOut[] now contains an absolute path there is nothing more
  ** to do. If it contains a relative path, do the following:
  **
  **   * move the relative path string so that it is at the end of th
  **     zOut[] buffer.
    if( bLink ){
  **   * Call getcwd() to read the path of the current working directory 
  **     into the start of the zOut[] buffer.
  **   * Append a '/' character to the cwd string and move the 
  **     relative path back within the buffer so that it immediately 
  **     follows the '/'.
  **
      if( zDel==0 ){
        zDel = sqlite3_malloc(nOut);
        if( zDel==0 ) rc = SQLITE_NOMEM;
      }else if( ++nLink>SQLITE_MAX_SYMLINKS ){
        rc = SQLITE_CANTOPEN_BKPT;
      }

  ** This code is written so that if the combination of the CWD and relative
  ** path are larger than the allocated size of zOut[] the CWD is silently
  ** truncated to make it fit. This is Ok, as SQLite refuses to open any
  ** file for which this function returns a full path larger than (nOut-8)
  ** bytes in size.  */
  testcase( nByte==nOut-5 );
  testcase( nByte==nOut-4 );
  if( zOut[0]!='/' && nByte<nOut-4 ){
    int nCwd;
    int nRem = nOut-nByte-1;
    memmove(&zOut[nRem], zOut, nByte+1);
    zOut[nRem-1] = '\0';
    if( osGetcwd(zOut, nRem-1)==0 ){
      if( rc==SQLITE_OK ){
        nByte = osReadlink(zIn, zDel, nOut-1);
        if( nByte<0 ){
          rc = unixLogError(SQLITE_CANTOPEN_BKPT, "readlink", zIn);
        }else{
          if( zDel[0]!='/' ){
            int n;
            for(n = sqlite3Strlen30(zIn); n>0 && zIn[n-1]!='/'; n--);
            if( nByte+n+1>nOut ){
              rc = SQLITE_CANTOPEN_BKPT;
            }else{
              memmove(&zDel[n], zDel, nByte+1);
              memcpy(zDel, zIn, n);
              nByte += n;
            }
          }
          zDel[nByte] = '\0';
        }
      }

      return unixLogError(SQLITE_CANTOPEN_BKPT, "getcwd", zPath);
      zIn = zDel;
    }
    nCwd = sqlite3Strlen30(zOut);
    assert( nCwd<=nRem-1 );
    zOut[nCwd] = '/';

    assert( rc!=SQLITE_OK || zIn!=zOut || zIn[0]=='/' );
    if( rc==SQLITE_OK && zIn!=zOut ){
    memmove(&zOut[nCwd+1], &zOut[nRem], nByte+1);
  }
      rc = mkFullPathname(zIn, zOut, nOut);
    }
    if( bLink==0 ) break;
    zIn = zOut;
  }while( rc==SQLITE_OK );

  sqlite3_free(zDel);
  return SQLITE_OK;
  return rc;
#endif   /* HAVE_READLINK && HAVE_LSTAT */
}


#ifndef SQLITE_OMIT_LOAD_EXTENSION
/*
** Interfaces for opening a shared library, finding entry points
** within the shared library, and closing the shared library.

    *piNow = 1000*(sqlite3_int64)sqlite3_current_time + unixEpoch;
  }
#endif
  UNUSED_PARAMETER(NotUsed);
  return rc;
}

#if 0 /* Not used */
#ifndef SQLITE_OMIT_DEPRECATED
/*
** Find the current time (in Universal Coordinated Time).  Write the
** current time and date as a Julian Day number into *prNow and
** return 0.  Return 1 if the time and date cannot be found.
*/
static int unixCurrentTime(sqlite3_vfs *NotUsed, double *prNow){
  sqlite3_int64 i = 0;
  int rc;
  UNUSED_PARAMETER(NotUsed);
  rc = unixCurrentTimeInt64(0, &i);
  *prNow = i/86400000.0;
  return rc;
}
#else
# define unixCurrentTime 0
#endif

#if 0  /* Not used */
#ifndef SQLITE_OMIT_DEPRECATED
/*
** We added the xGetLastError() method with the intention of providing
** better low-level error messages when operating-system problems come up
** during SQLite operation.  But so far, none of that has been implemented
** in the core.  So this routine is never called.  For now, it is merely
** a place-holder.
*/

                  MAXPATHLEN);
        }else{
          strlcpy(&writeBuffer[PROXY_PATHINDEX], tempLockPath, MAXPATHLEN);
        }
        writeSize = PROXY_PATHINDEX + strlen(&writeBuffer[PROXY_PATHINDEX]);
        robust_ftruncate(conchFile->h, writeSize);
        rc = unixWrite((sqlite3_file *)conchFile, writeBuffer, writeSize, 0);
        fsync(conchFile->h);
        full_fsync(conchFile->h,0,0);
        /* If we created a new conch file (not just updated the contents of a 
         ** valid conch file), try to match the permissions of the database 
         */
        if( rc==SQLITE_OK && createConch ){
          struct stat buf;
          int err = osFstat(pFile->h, &buf);
          if( err==0 ){

    UNIXVFS("unix-proxy",    proxyIoFinder ),
#endif
  };
  unsigned int i;          /* Loop counter */

  /* Double-check that the aSyscall[] array has been constructed
  ** correctly.  See ticket [bb3a86e890c8e96ab] */
  assert( ArraySize(aSyscall)==27 );
  assert( ArraySize(aSyscall)==28 );

  /* Register all VFSes defined in the aVfs[] array */
  for(i=0; i<(sizeof(aVfs)/sizeof(sqlite3_vfs)); i++){
    sqlite3_vfs_register(&aVfs[i], i==0);
  }
  return SQLITE_OK; 
}

/*
** Macros for performance tracing.  Normally turned off.  Only works
** on i486 hardware.
*/
#ifdef SQLITE_PERFORMANCE_TRACE

/* 
** hwtime.h contains inline assembler code for implementing 
/*
** hwtime.h contains inline assembler code for implementing
** high-performance timing routines.
*/
/************** Include hwtime.h in the middle of os_common.h ****************/
/************** Begin file hwtime.h ******************************************/
/*
** 2008 May 27
**

#endif

/*
** If we compile with the SQLITE_TEST macro set, then the following block
** of code will give us the ability to simulate a disk I/O error.  This
** is used for testing the I/O recovery logic.
*/
#ifdef SQLITE_TEST
SQLITE_API int sqlite3_io_error_hit = 0;            /* Total number of I/O Errors */
SQLITE_API int sqlite3_io_error_hardhit = 0;        /* Number of non-benign errors */
SQLITE_API int sqlite3_io_error_pending = 0;        /* Count down to first I/O error */
SQLITE_API int sqlite3_io_error_persist = 0;        /* True if I/O errors persist */
SQLITE_API int sqlite3_io_error_benign = 0;         /* True if errors are benign */
SQLITE_API int sqlite3_diskfull_pending = 0;
SQLITE_API int sqlite3_diskfull = 0;
#if defined(SQLITE_TEST)
SQLITE_API extern int sqlite3_io_error_hit;
SQLITE_API extern int sqlite3_io_error_hardhit;
SQLITE_API extern int sqlite3_io_error_pending;
SQLITE_API extern int sqlite3_io_error_persist;
SQLITE_API extern int sqlite3_io_error_benign;
SQLITE_API extern int sqlite3_diskfull_pending;
SQLITE_API extern int sqlite3_diskfull;
#define SimulateIOErrorBenign(X) sqlite3_io_error_benign=(X)
#define SimulateIOError(CODE)  \
  if( (sqlite3_io_error_persist && sqlite3_io_error_hit) \
       || sqlite3_io_error_pending-- == 1 )  \
              { local_ioerr(); CODE; }
static void local_ioerr(){
  IOTRACE(("IOERR\n"));

       sqlite3_diskfull_pending--; \
     } \
   }
#else
#define SimulateIOErrorBenign(X)
#define SimulateIOError(A)
#define SimulateDiskfullError(A)
#endif
#endif /* defined(SQLITE_TEST) */

/*
** When testing, keep a count of the number of open files.
*/
#ifdef SQLITE_TEST
SQLITE_API int sqlite3_open_file_count = 0;
#if defined(SQLITE_TEST)
SQLITE_API extern int sqlite3_open_file_count;
#define OpenCounter(X)  sqlite3_open_file_count+=(X)
#else
#define OpenCounter(X)
#endif
#endif /* defined(SQLITE_TEST) */

#endif /* !defined(_OS_COMMON_H_) */

/************** End of os_common.h *******************************************/
/************** Continuing where we left off in os_win.c *********************/

/*

#  define NTDDI_WIN8                        0x06020000
#endif

#ifndef NTDDI_WINBLUE
#  define NTDDI_WINBLUE                     0x06030000
#endif

#ifndef NTDDI_WINTHRESHOLD
#  define NTDDI_WINTHRESHOLD                0x06040000
#endif

/*
** Check to see if the GetVersionEx[AW] functions are deprecated on the
** target system.  GetVersionEx was first deprecated in Win8.1.
*/
#ifndef SQLITE_WIN32_GETVERSIONEX
#  if defined(NTDDI_VERSION) && NTDDI_VERSION >= NTDDI_WINBLUE
#    define SQLITE_WIN32_GETVERSIONEX   0   /* GetVersionEx() is deprecated */
#  else
#    define SQLITE_WIN32_GETVERSIONEX   1   /* GetVersionEx() is current */
#  endif
#endif

/*
** Check to see if the CreateFileMappingA function is supported on the
** target system.  It is unavailable when using "mincore.lib" on Win10.
** When compiling for Windows 10, always assume "mincore.lib" is in use.
*/
#ifndef SQLITE_WIN32_CREATEFILEMAPPINGA
#  if defined(NTDDI_VERSION) && NTDDI_VERSION >= NTDDI_WINTHRESHOLD
#    define SQLITE_WIN32_CREATEFILEMAPPINGA   0
#  else
#    define SQLITE_WIN32_CREATEFILEMAPPINGA   1
#  endif
#endif

/*
** This constant should already be defined (in the "WinDef.h" SDK file).
*/
#ifndef MAX_PATH
#  define MAX_PATH                      (260)
#endif

#else
  { "CreateFileW",             (SYSCALL)0,                       0 },
#endif

#define osCreateFileW ((HANDLE(WINAPI*)(LPCWSTR,DWORD,DWORD, \
        LPSECURITY_ATTRIBUTES,DWORD,DWORD,HANDLE))aSyscall[5].pCurrent)

#if (!SQLITE_OS_WINRT && defined(SQLITE_WIN32_HAS_ANSI) && \
        (!defined(SQLITE_OMIT_WAL) || SQLITE_MAX_MMAP_SIZE>0))
#if !SQLITE_OS_WINRT && defined(SQLITE_WIN32_HAS_ANSI) && \
        (!defined(SQLITE_OMIT_WAL) || SQLITE_MAX_MMAP_SIZE>0) && \
        SQLITE_WIN32_CREATEFILEMAPPINGA
  { "CreateFileMappingA",      (SYSCALL)CreateFileMappingA,      0 },
#else
  { "CreateFileMappingA",      (SYSCALL)0,                       0 },
#endif

#define osCreateFileMappingA ((HANDLE(WINAPI*)(HANDLE,LPSECURITY_ATTRIBUTES, \
        DWORD,DWORD,DWORD,LPCSTR))aSyscall[6].pCurrent)

  { "GetTickCount",            (SYSCALL)GetTickCount,            0 },
#else
  { "GetTickCount",            (SYSCALL)0,                       0 },
#endif

#define osGetTickCount ((DWORD(WINAPI*)(VOID))aSyscall[33].pCurrent)

#if defined(SQLITE_WIN32_HAS_ANSI) && defined(SQLITE_WIN32_GETVERSIONEX) && \
#if defined(SQLITE_WIN32_HAS_ANSI) && SQLITE_WIN32_GETVERSIONEX
        SQLITE_WIN32_GETVERSIONEX
  { "GetVersionExA",           (SYSCALL)GetVersionExA,           0 },
#else
  { "GetVersionExA",           (SYSCALL)0,                       0 },
#endif

#define osGetVersionExA ((BOOL(WINAPI*)( \
        LPOSVERSIONINFOA))aSyscall[34].pCurrent)

#if !SQLITE_OS_WINRT && defined(SQLITE_WIN32_HAS_WIDE) && \
        defined(SQLITE_WIN32_GETVERSIONEX) && SQLITE_WIN32_GETVERSIONEX
        SQLITE_WIN32_GETVERSIONEX
  { "GetVersionExW",           (SYSCALL)GetVersionExW,           0 },
#else
  { "GetVersionExW",           (SYSCALL)0,                       0 },
#endif

#define osGetVersionExW ((BOOL(WINAPI*)( \
        LPOSVERSIONINFOW))aSyscall[35].pCurrent)

** the LockFileEx() API.  But we can still statically link against that
** API as long as we don't call it when running Win95/98/ME.  A call to
** this routine is used to determine if the host is Win95/98/ME or
** WinNT/2K/XP so that we will know whether or not we can safely call
** the LockFileEx() API.
*/

#if !defined(SQLITE_WIN32_GETVERSIONEX) || !SQLITE_WIN32_GETVERSIONEX
#if !SQLITE_WIN32_GETVERSIONEX
# define osIsNT()  (1)
#elif SQLITE_OS_WINCE || SQLITE_OS_WINRT || !defined(SQLITE_WIN32_HAS_ANSI)
# define osIsNT()  (1)
#elif !defined(SQLITE_WIN32_HAS_WIDE)
# define osIsNT()  (0)
#else
# define osIsNT()  ((sqlite3_os_type==2) || sqlite3_win32_is_nt())
#endif

/*
** This function determines if the machine is running a version of Windows
** based on the NT kernel.
*/
SQLITE_API int SQLITE_STDCALL sqlite3_win32_is_nt(void){
#if SQLITE_OS_WINRT
  /*
  ** NOTE: The WinRT sub-platform is always assumed to be based on the NT
  **       kernel.
  */
  return 1;
#elif defined(SQLITE_WIN32_GETVERSIONEX) && SQLITE_WIN32_GETVERSIONEX
#elif SQLITE_WIN32_GETVERSIONEX
  if( osInterlockedCompareExchange(&sqlite3_os_type, 0, 0)==0 ){
#if defined(SQLITE_WIN32_HAS_ANSI)
    OSVERSIONINFOA sInfo;
    sInfo.dwOSVersionInfoSize = sizeof(sInfo);
    osGetVersionExA(&sInfo);
    osInterlockedCompareExchange(&sqlite3_os_type,
        (sInfo.dwPlatformId == VER_PLATFORM_WIN32_NT) ? 2 : 1, 0);

      hMap = osCreateFileMappingFromApp(pShmNode->hFile.h,
          NULL, PAGE_READWRITE, nByte, NULL
      );
#elif defined(SQLITE_WIN32_HAS_WIDE)
      hMap = osCreateFileMappingW(pShmNode->hFile.h,
          NULL, PAGE_READWRITE, 0, nByte, NULL
      );
#elif defined(SQLITE_WIN32_HAS_ANSI)
#elif defined(SQLITE_WIN32_HAS_ANSI) && SQLITE_WIN32_CREATEFILEMAPPINGA
      hMap = osCreateFileMappingA(pShmNode->hFile.h,
          NULL, PAGE_READWRITE, 0, nByte, NULL
      );
#endif
      OSTRACE(("SHM-MAP-CREATE pid=%lu, region=%d, size=%d, rc=%s\n",
               osGetCurrentProcessId(), pShmNode->nRegion, nByte,
               hMap ? "ok" : "failed"));

#endif
#if SQLITE_OS_WINRT
    pFd->hMap = osCreateFileMappingFromApp(pFd->h, NULL, protect, nMap, NULL);
#elif defined(SQLITE_WIN32_HAS_WIDE)
    pFd->hMap = osCreateFileMappingW(pFd->h, NULL, protect,
                                (DWORD)((nMap>>32) & 0xffffffff),
                                (DWORD)(nMap & 0xffffffff), NULL);
#elif defined(SQLITE_WIN32_HAS_ANSI)
#elif defined(SQLITE_WIN32_HAS_ANSI) && SQLITE_WIN32_CREATEFILEMAPPINGA
    pFd->hMap = osCreateFileMappingA(pFd->h, NULL, protect,
                                (DWORD)((nMap>>32) & 0xffffffff),
                                (DWORD)(nMap & 0xffffffff), NULL);
#endif
    if( pFd->hMap==NULL ){
      pFd->lastErrno = osGetLastError();
      rc = winLogError(SQLITE_IOERR_MMAP, pFd->lastErrno,

** In an OOM situation, the RowSet.db->mallocFailed flag is set and this
** routine returns NULL.
*/
static struct RowSetEntry *rowSetEntryAlloc(RowSet *p){
  assert( p!=0 );
  if( p->nFresh==0 ){
    struct RowSetChunk *pNew;
    pNew = sqlite3DbMallocRaw(p->db, sizeof(*pNew));
    pNew = sqlite3DbMallocRawNN(p->db, sizeof(*pNew));
    if( pNew==0 ){
      return 0;
    }
    pNew->pNextChunk = p->pChunk;
    p->pChunk = pNew;
    p->pFresh = pNew->aEntry;
    p->nFresh = ROWSET_ENTRY_PER_CHUNK;

# define sqlite3WalFrames(u,v,w,x,y,z)           0
# define sqlite3WalCheckpoint(r,s,t,u,v,w,x,y,z) 0
# define sqlite3WalCallback(z)                   0
# define sqlite3WalExclusiveMode(y,z)            0
# define sqlite3WalHeapMemory(z)                 0
# define sqlite3WalFramesize(z)                  0
# define sqlite3WalFindFrame(x,y,z)              0
# define sqlite3WalFile(x)                       0
#else

#define WAL_SAVEPOINT_NDATA 4

/* Connection to a write-ahead log (WAL) file. 
** There is one object of this type for each pager. 
*/

#ifdef SQLITE_ENABLE_ZIPVFS
/* If the WAL file is not empty, return the number of bytes of content
** stored in each frame (i.e. the db page-size when the WAL was created).
*/
SQLITE_PRIVATE int sqlite3WalFramesize(Wal *pWal);
#endif

/* Return the sqlite3_file object for the WAL file */
SQLITE_PRIVATE sqlite3_file *sqlite3WalFile(Wal *pWal);

#endif /* ifndef SQLITE_OMIT_WAL */
#endif /* _WAL_H_ */

/************** End of wal.h *************************************************/
/************** Continuing where we left off in pager.c **********************/

/*
** The maximum allowed sector size. 64KiB. If the xSectorsize() method 
** returns a value larger than this, then MAX_SECTOR_SIZE is used instead.
** This could conceivably cause corruption following a power failure on
** such a system. This is currently an undocumented limit.
*/
#define MAX_SECTOR_SIZE 0x10000

/*
** If the option SQLITE_EXTRA_DURABLE option is set at compile-time, then
** SQLite will do extra fsync() operations when synchronous==FULL to help
** ensure that transactions are durable across a power failure.  Most
** applications are happy as long as transactions are consistent across
** a power failure, and are perfectly willing to lose the last transaction
** in exchange for the extra performance of avoiding directory syncs.
** And so the default SQLITE_EXTRA_DURABLE setting is off.
*/
#ifndef SQLITE_EXTRA_DURABLE
# define SQLITE_EXTRA_DURABLE 0
#endif


/*
** An instance of the following structure is allocated for each active
** savepoint and statement transaction in the system. All such structures
** are stored in the Pager.aSavepoint[] array, which is allocated and
** resized using sqlite3Realloc().
**

struct Pager {
  sqlite3_vfs *pVfs;          /* OS functions to use for IO */
  u8 exclusiveMode;           /* Boolean. True if locking_mode==EXCLUSIVE */
  u8 journalMode;             /* One of the PAGER_JOURNALMODE_* values */
  u8 useJournal;              /* Use a rollback journal on this file */
  u8 noSync;                  /* Do not sync the journal if true */
  u8 fullSync;                /* Do extra syncs of the journal for robustness */
  u8 extraSync;               /* sync directory after journal delete */
  u8 ckptSyncFlags;           /* SYNC_NORMAL or SYNC_FULL for checkpoint */
  u8 walSyncFlags;            /* SYNC_NORMAL or SYNC_FULL for wal writes */
  u8 syncFlags;               /* SYNC_NORMAL or SYNC_FULL otherwise */
  u8 tempFile;                /* zFilename is a temporary or immutable file */
  u8 noLock;                  /* Do not lock (except in WAL mode) */
  u8 readOnly;                /* True for a read-only database */
  u8 memDb;                   /* True to inhibit all file I/O */

      int bDelete = (!pPager->tempFile && sqlite3JournalExists(pPager->jfd));
      assert( pPager->journalMode==PAGER_JOURNALMODE_DELETE 
           || pPager->journalMode==PAGER_JOURNALMODE_MEMORY 
           || pPager->journalMode==PAGER_JOURNALMODE_WAL 
      );
      sqlite3OsClose(pPager->jfd);
      if( bDelete ){
        rc = sqlite3OsDelete(pPager->pVfs, pPager->zJournal, 0);
        rc = sqlite3OsDelete(pPager->pVfs, pPager->zJournal, pPager->extraSync);
      }
    }
  }

#ifdef SQLITE_CHECK_PAGES
  sqlite3PcacheIterateDirty(pPager->pPCache, pager_set_pagehash);
  if( pPager->dbSize==0 && sqlite3PcacheRefCount(pPager->pPCache)>0 ){

*/
#ifndef SQLITE_OMIT_PAGER_PRAGMAS
SQLITE_PRIVATE void sqlite3PagerSetFlags(
  Pager *pPager,        /* The pager to set safety level for */
  unsigned pgFlags      /* Various flags */
){
  unsigned level = pgFlags & PAGER_SYNCHRONOUS_MASK;
  assert( level>=1 && level<=3 );
  pPager->noSync =  (level==1 || pPager->tempFile) ?1:0;
  pPager->fullSync = (level==3 && !pPager->tempFile) ?1:0;
  if( pPager->tempFile ){
    pPager->noSync = 1;
    pPager->fullSync = 0;
    pPager->extraSync = 0;
  }else{
    pPager->noSync =  level==PAGER_SYNCHRONOUS_OFF ?1:0;
    pPager->fullSync = level>=PAGER_SYNCHRONOUS_FULL ?1:0;
    pPager->extraSync = level==PAGER_SYNCHRONOUS_EXTRA ?1:0;
  }
  if( pPager->noSync ){
    pPager->syncFlags = 0;
    pPager->ckptSyncFlags = 0;
  }else if( pgFlags & PAGER_FULLFSYNC ){
    pPager->syncFlags = SQLITE_SYNC_FULL;
    pPager->ckptSyncFlags = SQLITE_SYNC_FULL;
  }else if( pgFlags & PAGER_CKPT_FULLFSYNC ){

  pPager->changeCountDone = pPager->tempFile;
  pPager->memDb = (u8)memDb;
  pPager->readOnly = (u8)readOnly;
  assert( useJournal || pPager->tempFile );
  pPager->noSync = pPager->tempFile;
  if( pPager->noSync ){
    assert( pPager->fullSync==0 );
    assert( pPager->extraSync==0 );
    assert( pPager->syncFlags==0 );
    assert( pPager->walSyncFlags==0 );
    assert( pPager->ckptSyncFlags==0 );
  }else{
    pPager->fullSync = 1;
#if SQLITE_EXTRA_DURABLE
    pPager->extraSync = 1;
#else
    pPager->extraSync = 0;
#endif
    pPager->syncFlags = SQLITE_SYNC_NORMAL;
    pPager->walSyncFlags = SQLITE_SYNC_NORMAL | WAL_SYNC_TRANSACTIONS;
    pPager->ckptSyncFlags = SQLITE_SYNC_NORMAL;
  }
  /* pPager->pFirst = 0; */
  /* pPager->pFirstSynced = 0; */
  /* pPager->pLast = 0; */

      ** exclusive lock on the database is not already held, obtain it now.
      */
      if( pPager->exclusiveMode && sqlite3WalExclusiveMode(pPager->pWal, -1) ){
        rc = pagerLockDb(pPager, EXCLUSIVE_LOCK);
        if( rc!=SQLITE_OK ){
          return rc;
        }
        sqlite3WalExclusiveMode(pPager->pWal, 1);
        (void)sqlite3WalExclusiveMode(pPager->pWal, 1);
      }

      /* Grab the write lock on the log file. If successful, upgrade to
      ** PAGER_RESERVED state. Otherwise, return an error code to the caller.
      ** The busy-handler is not invoked if another connection already
      ** holds the write-lock. If possible, the upper layer will call it.
      */

** Return the file handle for the database file associated
** with the pager.  This might return NULL if the file has
** not yet been opened.
*/
SQLITE_PRIVATE sqlite3_file *sqlite3PagerFile(Pager *pPager){
  return pPager->fd;
}

/*
** Return the file handle for the journal file (if it exists).
** This will be either the rollback journal or the WAL file.
*/
SQLITE_PRIVATE sqlite3_file *sqlite3PagerJrnlFile(Pager *pPager){
#if SQLITE_OMIT_WAL
  return pPager->jfd;
#else
  return pPager->pWal ? sqlite3WalFile(pPager->pWal) : pPager->jfd;
#endif
}

/*
** Return the full pathname of the journal file.
*/
SQLITE_PRIVATE const char *sqlite3PagerJournalname(Pager *pPager){
  return pPager->zJournal;
}

  u8 ckptLock;               /* True if holding a checkpoint lock */
  u8 readOnly;               /* WAL_RDWR, WAL_RDONLY, or WAL_SHM_RDONLY */
  u8 truncateOnCommit;       /* True to truncate WAL file on commit */
  u8 syncHeader;             /* Fsync the WAL header if true */
  u8 padToSectorBoundary;    /* Pad transactions out to the next sector */
  WalIndexHdr hdr;           /* Wal-index header for current transaction */
  u32 minFrame;              /* Ignore wal frames before this one */
  u32 iReCksum;              /* On commit, recalculate checksums from here */
  const char *zWalName;      /* Name of WAL file */
  u32 nCkpt;                 /* Checkpoint sequence counter in the wal-header */
#ifdef SQLITE_DEBUG
  u8 lockError;              /* True if a locking error has occurred */
#endif
#ifdef SQLITE_ENABLE_SNAPSHOT
  WalIndexHdr *pSnapshot;    /* Start transaction here if not NULL */

  u8 *aFrame                      /* OUT: Write encoded frame here */
){
  int nativeCksum;                /* True for native byte-order checksums */
  u32 *aCksum = pWal->hdr.aFrameCksum;
  assert( WAL_FRAME_HDRSIZE==24 );
  sqlite3Put4byte(&aFrame[0], iPage);
  sqlite3Put4byte(&aFrame[4], nTruncate);
  if( pWal->iReCksum==0 ){
  memcpy(&aFrame[8], pWal->hdr.aSalt, 8);
    memcpy(&aFrame[8], pWal->hdr.aSalt, 8);

  nativeCksum = (pWal->hdr.bigEndCksum==SQLITE_BIGENDIAN);
  walChecksumBytes(nativeCksum, aFrame, 8, aCksum, aCksum);
  walChecksumBytes(nativeCksum, aData, pWal->szPage, aCksum, aCksum);
    nativeCksum = (pWal->hdr.bigEndCksum==SQLITE_BIGENDIAN);
    walChecksumBytes(nativeCksum, aFrame, 8, aCksum, aCksum);
    walChecksumBytes(nativeCksum, aData, pWal->szPage, aCksum, aCksum);

  sqlite3Put4byte(&aFrame[16], aCksum[0]);
  sqlite3Put4byte(&aFrame[20], aCksum[1]);
    sqlite3Put4byte(&aFrame[16], aCksum[0]);
    sqlite3Put4byte(&aFrame[20], aCksum[1]);
  }else{
    memset(&aFrame[8], 0, 16);
  }
}

/*
** Check to see if the frame with header in aFrame[] and content
** in aData[] is valid.  If it is a valid frame, fill *piPage and
** *pnTruncate and return true.  Return if the frame is not valid.
*/

*/
SQLITE_PRIVATE int sqlite3WalBeginWriteTransaction(Wal *pWal){
  int rc;

  /* Cannot start a write transaction without first holding a read
  ** transaction. */
  assert( pWal->readLock>=0 );
  assert( pWal->writeLock==0 && pWal->iReCksum==0 );

  if( pWal->readOnly ){
    return SQLITE_READONLY;
  }

  /* Only one writer allowed at a time.  Get the write lock.  Return
  ** SQLITE_BUSY if unable.

** End a write transaction.  The commit has already been done.  This
** routine merely releases the lock.
*/
SQLITE_PRIVATE int sqlite3WalEndWriteTransaction(Wal *pWal){
  if( pWal->writeLock ){
    walUnlockExclusive(pWal, WAL_WRITE_LOCK, 1);
    pWal->writeLock = 0;
    pWal->iReCksum = 0;
    pWal->truncateOnCommit = 0;
  }
  return SQLITE_OK;
}

/*
** If any data has been written (but not committed) to the log file, this

  walEncodeFrame(p->pWal, pPage->pgno, nTruncate, pData, aFrame);
  rc = walWriteToLog(p, aFrame, sizeof(aFrame), iOffset);
  if( rc ) return rc;
  /* Write the page data */
  rc = walWriteToLog(p, pData, p->szPage, iOffset+sizeof(aFrame));
  return rc;
}

/*
** This function is called as part of committing a transaction within which
** one or more frames have been overwritten. It updates the checksums for
** all frames written to the wal file by the current transaction starting
** with the earliest to have been overwritten.
**
** SQLITE_OK is returned if successful, or an SQLite error code otherwise.
*/
static int walRewriteChecksums(Wal *pWal, u32 iLast){
  const int szPage = pWal->szPage;/* Database page size */
  int rc = SQLITE_OK;             /* Return code */
  u8 *aBuf;                       /* Buffer to load data from wal file into */
  u8 aFrame[WAL_FRAME_HDRSIZE];   /* Buffer to assemble frame-headers in */
  u32 iRead;                      /* Next frame to read from wal file */
  i64 iCksumOff;

  aBuf = sqlite3_malloc(szPage + WAL_FRAME_HDRSIZE);
  if( aBuf==0 ) return SQLITE_NOMEM;

  /* Find the checksum values to use as input for the recalculating the
  ** first checksum. If the first frame is frame 1 (implying that the current
  ** transaction restarted the wal file), these values must be read from the
  ** wal-file header. Otherwise, read them from the frame header of the
  ** previous frame.  */
  assert( pWal->iReCksum>0 );
  if( pWal->iReCksum==1 ){
    iCksumOff = 24;
  }else{
    iCksumOff = walFrameOffset(pWal->iReCksum-1, szPage) + 16;
  }
  rc = sqlite3OsRead(pWal->pWalFd, aBuf, sizeof(u32)*2, iCksumOff);
  pWal->hdr.aFrameCksum[0] = sqlite3Get4byte(aBuf);
  pWal->hdr.aFrameCksum[1] = sqlite3Get4byte(&aBuf[sizeof(u32)]);

  iRead = pWal->iReCksum;
  pWal->iReCksum = 0;
  for(; rc==SQLITE_OK && iRead<=iLast; iRead++){
    i64 iOff = walFrameOffset(iRead, szPage);
    rc = sqlite3OsRead(pWal->pWalFd, aBuf, szPage+WAL_FRAME_HDRSIZE, iOff);
    if( rc==SQLITE_OK ){
      u32 iPgno, nDbSize;
      iPgno = sqlite3Get4byte(aBuf);
      nDbSize = sqlite3Get4byte(&aBuf[4]);

      walEncodeFrame(pWal, iPgno, nDbSize, &aBuf[WAL_FRAME_HDRSIZE], aFrame);
      rc = sqlite3OsWrite(pWal->pWalFd, aFrame, sizeof(aFrame), iOff);
    }
  }

  sqlite3_free(aBuf);
  return rc;
}

/* 
** Write a set of frames to the log. The caller must hold the write-lock
** on the log file (obtained using sqlite3WalBeginWriteTransaction()).
*/
SQLITE_PRIVATE int sqlite3WalFrames(
  Wal *pWal,                      /* Wal handle to write to */

  u32 iFrame;                     /* Next frame address */
  PgHdr *p;                       /* Iterator to run through pList with. */
  PgHdr *pLast = 0;               /* Last frame in list */
  int nExtra = 0;                 /* Number of extra copies of last page */
  int szFrame;                    /* The size of a single frame */
  i64 iOffset;                    /* Next byte to write in WAL file */
  WalWriter w;                    /* The writer */
  u32 iFirst = 0;                 /* First frame that may be overwritten */
  WalIndexHdr *pLive;             /* Pointer to shared header */

  assert( pList );
  assert( pWal->writeLock );

  /* If this frame set completes a transaction, then nTruncate>0.  If
  ** nTruncate==0 then this frame set does not complete the transaction. */
  assert( (isCommit!=0)==(nTruncate!=0) );

#if defined(SQLITE_TEST) && defined(SQLITE_DEBUG)
  { int cnt; for(cnt=0, p=pList; p; p=p->pDirty, cnt++){}
    WALTRACE(("WAL%p: frame write begin. %d frames. mxFrame=%d. %s\n",
              pWal, cnt, pWal->hdr.mxFrame, isCommit ? "Commit" : "Spill"));
  }
#endif

  pLive = (WalIndexHdr*)walIndexHdr(pWal);
  if( memcmp(&pWal->hdr, (void *)pLive, sizeof(WalIndexHdr))!=0 ){
    iFirst = pLive->mxFrame+1;
  }

  /* See if it is possible to write these frames into the start of the
  ** log file, instead of appending to it at pWal->hdr.mxFrame.
  */
  if( SQLITE_OK!=(rc = walRestartLog(pWal)) ){
    return rc;
  }

  w.szPage = szPage;
  iOffset = walFrameOffset(iFrame+1, szPage);
  szFrame = szPage + WAL_FRAME_HDRSIZE;

  /* Write all frames into the log file exactly once */
  for(p=pList; p; p=p->pDirty){
    int nDbSize;   /* 0 normally.  Positive == commit flag */

    /* Check if this page has already been written into the wal file by
    ** the current transaction. If so, overwrite the existing frame and
    ** set Wal.writeLock to WAL_WRITELOCK_RECKSUM - indicating that 
    ** checksums must be recomputed when the transaction is committed.  */
    if( iFirst && (p->pDirty || isCommit==0) ){
      u32 iWrite = 0;
      VVA_ONLY(rc =) sqlite3WalFindFrame(pWal, p->pgno, &iWrite);
      assert( rc==SQLITE_OK || iWrite==0 );
      if( iWrite>=iFirst ){
        i64 iOff = walFrameOffset(iWrite, szPage) + WAL_FRAME_HDRSIZE;
        void *pData;
        if( pWal->iReCksum==0 || iWrite<pWal->iReCksum ){
          pWal->iReCksum = iWrite;
        }
#if defined(SQLITE_HAS_CODEC)
        if( (pData = sqlite3PagerCodec(p))==0 ) return SQLITE_NOMEM;
#else
        pData = p->pData;
#endif
        rc = sqlite3OsWrite(pWal->pWalFd, pData, szPage, iOff);
        if( rc ) return rc;
        p->flags &= ~PGHDR_WAL_APPEND;
        continue;
      }
    }

    iFrame++;
    assert( iOffset==walFrameOffset(iFrame, szPage) );
    nDbSize = (isCommit && p->pDirty==0) ? nTruncate : 0;
    rc = walWriteOneFrame(&w, p, nDbSize, iOffset);
    if( rc ) return rc;
    pLast = p;
    iOffset += szFrame;
    p->flags |= PGHDR_WAL_APPEND;
  }

  /* Recalculate checksums within the wal file if required. */
  if( isCommit && pWal->iReCksum ){
    rc = walRewriteChecksums(pWal, iFrame);
    if( rc ) return rc;
  }

  /* If this is the end of a transaction, then we might need to pad
  ** the transaction and/or sync the WAL file.
  **
  ** Padding and syncing only occur if this set of frames complete a
  ** transaction and if PRAGMA synchronous=FULL.  If synchronous==NORMAL

  /* Append data to the wal-index. It is not necessary to lock the 
  ** wal-index to do this as the SQLITE_SHM_WRITE lock held on the wal-index
  ** guarantees that there are no other writers, and no data that may
  ** be in use by existing readers is being overwritten.
  */
  iFrame = pWal->hdr.mxFrame;
  for(p=pList; p && rc==SQLITE_OK; p=p->pDirty){
    if( (p->flags & PGHDR_WAL_APPEND)==0 ) continue;
    iFrame++;
    rc = walIndexAppend(pWal, iFrame, p->pgno);
  }
  while( rc==SQLITE_OK && nExtra>0 ){
    iFrame++;
    nExtra--;
    rc = walIndexAppend(pWal, iFrame, pLast->pgno);

    if( isChanged && pWal->pDbFd->pMethods->iVersion>=3 ){
      sqlite3OsUnfetch(pWal->pDbFd, 0, 0);
    }
  }

  /* Copy data from the log to the database file. */
  if( rc==SQLITE_OK ){

    if( pWal->hdr.mxFrame && walPagesize(pWal)!=nBuf ){
      rc = SQLITE_CORRUPT_BKPT;
    }else{
      rc = walCheckpoint(pWal, eMode2, xBusy2, pBusyArg, sync_flags, zBuf);
    }

    /* If no error occurred, set the output variables. */

** or zero if it is not (or if pWal is NULL).
*/
SQLITE_PRIVATE int sqlite3WalFramesize(Wal *pWal){
  assert( pWal==0 || pWal->readLock>=0 );
  return (pWal ? pWal->szPage : 0);
}
#endif

/* Return the sqlite3_file object for the WAL file
*/
SQLITE_PRIVATE sqlite3_file *sqlite3WalFile(Wal *pWal){
  return pWal->pWalFd;
}

#endif /* #ifndef SQLITE_OMIT_WAL */

/************** End of wal.c *************************************************/
/************** Begin file btmutex.c *****************************************/
/*
** 2007 August 27

** stored in MemPage.pBt->mutex.
*/
struct MemPage {
  u8 isInit;           /* True if previously initialized. MUST BE FIRST! */
  u8 nOverflow;        /* Number of overflow cell bodies in aCell[] */
  u8 intKey;           /* True if table b-trees.  False for index b-trees */
  u8 intKeyLeaf;       /* True if the leaf of an intKey table */
  u8 noPayload;        /* True if internal intKey page (thus w/o data) */
  u8 leaf;             /* True if a leaf page */
  u8 hdrOffset;        /* 100 for page 1.  0 otherwise */
  u8 childPtrSize;     /* 0 if leaf==1.  4 if leaf==0 */
  u8 max1bytePayload;  /* min(maxLocal,127) */
  u8 bBusy;            /* Prevent endless loops on corrupt database files */
  u16 maxLocal;        /* Copy of BtShared.maxLocal or BtShared.maxLeaf */
  u16 minLocal;        /* Copy of BtShared.minLocal or BtShared.minLeaf */

  assert( p->sharable==0 || p->locked==0 || sqlite3_mutex_held(p->pBt->mutex) );
  assert( p->sharable==0 || p->locked==0 || sqlite3_mutex_held(p->db->mutex) );

  return (p->sharable==0 || p->locked);
}
#endif


#ifndef SQLITE_OMIT_INCRBLOB
/*
** Enter and leave a mutex on a Btree given a cursor owned by that
** Btree.  These entry points are used by incremental I/O and can be
** omitted if that module is not used.
*/
SQLITE_PRIVATE void sqlite3BtreeEnterCursor(BtCursor *pCur){
  sqlite3BtreeEnter(pCur->pBtree);
}
SQLITE_PRIVATE void sqlite3BtreeLeaveCursor(BtCursor *pCur){
  sqlite3BtreeLeave(pCur->pBtree);
}
#endif /* SQLITE_OMIT_INCRBLOB */


/*
** Enter the mutex on every Btree associated with a database
** connection.  This is needed (for example) prior to parsing
** a statement since we will be comparing table and column names
** against all schemas and we do not want those schemas being
** reset out from under us.

  assert( sqlite3_mutex_held(db->mutex) );
  for(i=0; i<db->nDb; i++){
    p = db->aDb[i].pBt;
    if( p ) sqlite3BtreeLeave(p);
  }
}

/*
** Return true if a particular Btree requires a lock.  Return FALSE if
** no lock is ever required since it is not sharable.
*/
SQLITE_PRIVATE int sqlite3BtreeSharable(Btree *p){
  return p->sharable;
}

#ifndef NDEBUG
/*
** Return true if the current thread holds the database connection
** mutex and all required BtShared mutexes.
**
** This routine is used inside assert() statements only.
*/

    Btree *p = db->aDb[i].pBt;
    if( p ){
      p->pBt->db = p->db;
    }
  }
}
#endif /* if SQLITE_THREADSAFE */

#ifndef SQLITE_OMIT_INCRBLOB
/*
** Enter a mutex on a Btree given a cursor owned by that Btree. 
**
** These entry points are used by incremental I/O only. Enter() is required 
** any time OMIT_SHARED_CACHE is not defined, regardless of whether or not 
** the build is threadsafe. Leave() is only required by threadsafe builds.
*/
SQLITE_PRIVATE void sqlite3BtreeEnterCursor(BtCursor *pCur){
  sqlite3BtreeEnter(pCur->pBtree);
}
# if SQLITE_THREADSAFE
SQLITE_PRIVATE void sqlite3BtreeLeaveCursor(BtCursor *pCur){
  sqlite3BtreeLeave(pCur->pBtree);
}
# endif
#endif /* ifndef SQLITE_OMIT_INCRBLOB */

#endif /* ifndef SQLITE_OMIT_SHARED_CACHE */

/************** End of btmutex.c *********************************************/
/************** Begin file btree.c *******************************************/
/*
** 2004 April 6
**

**
** Verify that the cursor holds the mutex on its BtShared
*/
#ifdef SQLITE_DEBUG
static int cursorHoldsMutex(BtCursor *p){
  return sqlite3_mutex_held(p->pBt->mutex);
}
static int cursorOwnsBtShared(BtCursor *p){
  assert( cursorHoldsMutex(p) );
  return (p->pBtree->db==p->pBt->db);
}
#endif

/*
** Invalidate the overflow cache of the cursor passed as the first argument.
** on the shared btree structure pBt.
*/
#define invalidateOverflowCache(pCur) (pCur->curFlags &= ~BTCF_ValidOvfl)

** saved position info stored by saveCursorPosition(), so there can be
** at most one effective restoreCursorPosition() call after each 
** saveCursorPosition().
*/
static int btreeRestoreCursorPosition(BtCursor *pCur){
  int rc;
  int skipNext;
  assert( cursorHoldsMutex(pCur) );
  assert( cursorOwnsBtShared(pCur) );
  assert( pCur->eState>=CURSOR_REQUIRESEEK );
  if( pCur->eState==CURSOR_FAULT ){
    return pCur->skipNext;
  }
  pCur->eState = CURSOR_INVALID;
  rc = btreeMoveto(pCur, pCur->pKey, pCur->nKey, 0, &skipNext);
  if( rc==SQLITE_OK ){

static void btreeParseCellPtrNoPayload(
  MemPage *pPage,         /* Page containing the cell */
  u8 *pCell,              /* Pointer to the cell text. */
  CellInfo *pInfo         /* Fill in this structure */
){
  assert( sqlite3_mutex_held(pPage->pBt->mutex) );
  assert( pPage->leaf==0 );
  assert( pPage->noPayload );
  assert( pPage->childPtrSize==4 );
#ifndef SQLITE_DEBUG
  UNUSED_PARAMETER(pPage);
#endif
  pInfo->nSize = 4 + getVarint(&pCell[4], (u64*)&pInfo->nKey);
  pInfo->nPayload = 0;
  pInfo->nLocal = 0;

){
  u8 *pIter;              /* For scanning through pCell */
  u32 nPayload;           /* Number of bytes of cell payload */
  u64 iKey;               /* Extracted Key value */

  assert( sqlite3_mutex_held(pPage->pBt->mutex) );
  assert( pPage->leaf==0 || pPage->leaf==1 );
  assert( pPage->intKeyLeaf || pPage->noPayload );
  assert( pPage->noPayload==0 );
  assert( pPage->intKeyLeaf );
  assert( pPage->childPtrSize==0 );
  pIter = pCell;

  /* The next block of code is equivalent to:
  **
  **     pIter += getVarint32(pIter, nPayload);

){
  u8 *pIter;              /* For scanning through pCell */
  u32 nPayload;           /* Number of bytes of cell payload */

  assert( sqlite3_mutex_held(pPage->pBt->mutex) );
  assert( pPage->leaf==0 || pPage->leaf==1 );
  assert( pPage->intKeyLeaf==0 );
  assert( pPage->noPayload==0 );
  pIter = pCell + pPage->childPtrSize;
  nPayload = *pIter;
  if( nPayload>=0x80 ){
    u8 *pEnd = &pIter[8];
    nPayload &= 0x7f;
    do{
      nPayload = (nPayload<<7) | (*++pIter & 0x7f);

  ** the (CellInfo.nSize) value found by doing a full parse of the
  ** cell. If SQLITE_DEBUG is defined, an assert() at the bottom of
  ** this function verifies that this invariant is not violated. */
  CellInfo debuginfo;
  pPage->xParseCell(pPage, pCell, &debuginfo);
#endif

  assert( pPage->noPayload==0 );
  nSize = *pIter;
  if( nSize>=0x80 ){
    pEnd = &pIter[8];
    nSize &= 0x7f;
    do{
      nSize = (nSize<<7) | (*++pIter & 0x7f);
    }while( *(pIter)>=0x80 && pIter<pEnd );

    assert( (PTF_LEAFDATA|PTF_INTKEY)==5 );
    /* EVIDENCE-OF: R-20501-61796 A value of 13 means the page is a leaf
    ** table b-tree page. */
    assert( (PTF_LEAFDATA|PTF_INTKEY|PTF_LEAF)==13 );
    pPage->intKey = 1;
    if( pPage->leaf ){
      pPage->intKeyLeaf = 1;
      pPage->noPayload = 0;
      pPage->xParseCell = btreeParseCellPtr;
    }else{
      pPage->intKeyLeaf = 0;
      pPage->noPayload = 1;
      pPage->xCellSize = cellSizePtrNoPayload;
      pPage->xParseCell = btreeParseCellPtrNoPayload;
    }
    pPage->maxLocal = pBt->maxLeaf;
    pPage->minLocal = pBt->minLeaf;
  }else if( flagByte==PTF_ZERODATA ){
    /* EVIDENCE-OF: R-27225-53936 A value of 2 means the page is an interior
    ** index b-tree page. */
    assert( (PTF_ZERODATA)==2 );
    /* EVIDENCE-OF: R-16571-11615 A value of 10 means the page is a leaf
    ** index b-tree page. */
    assert( (PTF_ZERODATA|PTF_LEAF)==10 );
    pPage->intKey = 0;
    pPage->intKeyLeaf = 0;
    pPage->noPayload = 0;
    pPage->xParseCell = btreeParseCellPtrIndex;
    pPage->maxLocal = pBt->maxLocal;
    pPage->minLocal = pBt->minLocal;
  }else{
    /* EVIDENCE-OF: R-47608-56469 Any other value for the b-tree page type is
    ** an error. */
    return SQLITE_CORRUPT_BKPT;

      MUTEX_LOGIC( sqlite3_mutex *mutexShared; )
      pBt->nRef = 1;
      MUTEX_LOGIC( mutexShared = sqlite3MutexAlloc(SQLITE_MUTEX_STATIC_MASTER);)
      if( SQLITE_THREADSAFE && sqlite3GlobalConfig.bCoreMutex ){
        pBt->mutex = sqlite3MutexAlloc(SQLITE_MUTEX_FAST);
        if( pBt->mutex==0 ){
          rc = SQLITE_NOMEM;
          db->mallocFailed = 0;
          goto btree_open_out;
        }
      }
      sqlite3_mutex_enter(mutexShared);
      pBt->pNext = GLOBAL(BtShared*,sqlite3SharedCacheList);
      GLOBAL(BtShared*,sqlite3SharedCacheList) = pBt;
      sqlite3_mutex_leave(mutexShared);

** of A's read lock.  A tries to promote to reserved but is blocked by B.
** One or the other of the two processes must give way or there can be
** no progress.  By returning SQLITE_BUSY and not invoking the busy callback
** when A already has a read lock, we encourage A to give up and let B
** proceed.
*/
SQLITE_PRIVATE int sqlite3BtreeBeginTrans(Btree *p, int wrflag){
  sqlite3 *pBlock = 0;
  BtShared *pBt = p->pBt;
  int rc = SQLITE_OK;

  sqlite3BtreeEnter(p);
  btreeIntegrity(p);

  /* If the btree is already in a write-transaction, or it

  /* Write transactions are not possible on a read-only database */
  if( (pBt->btsFlags & BTS_READ_ONLY)!=0 && wrflag ){
    rc = SQLITE_READONLY;
    goto trans_begun;
  }

#ifndef SQLITE_OMIT_SHARED_CACHE
  {
    sqlite3 *pBlock = 0;
  /* If another database handle has already opened a write transaction 
  ** on this shared-btree structure and a second write transaction is
  ** requested, return SQLITE_LOCKED.
  */
  if( (wrflag && pBt->inTransaction==TRANS_WRITE)
   || (pBt->btsFlags & BTS_PENDING)!=0
  ){
    pBlock = pBt->pWriter->db;
  }else if( wrflag>1 ){
    BtLock *pIter;
    for(pIter=pBt->pLock; pIter; pIter=pIter->pNext){
      if( pIter->pBtree!=p ){
        pBlock = pIter->pBtree->db;
        break;
      }
    }
  }
  if( pBlock ){
    sqlite3ConnectionBlocked(p->db, pBlock);
    rc = SQLITE_LOCKED_SHAREDCACHE;
    goto trans_begun;
    /* If another database handle has already opened a write transaction 
    ** on this shared-btree structure and a second write transaction is
    ** requested, return SQLITE_LOCKED.
    */
    if( (wrflag && pBt->inTransaction==TRANS_WRITE)
     || (pBt->btsFlags & BTS_PENDING)!=0
    ){
      pBlock = pBt->pWriter->db;
    }else if( wrflag>1 ){
      BtLock *pIter;
      for(pIter=pBt->pLock; pIter; pIter=pIter->pNext){
        if( pIter->pBtree!=p ){
          pBlock = pIter->pBtree->db;
          break;
        }
      }
    }
    if( pBlock ){
      sqlite3ConnectionBlocked(p->db, pBlock);
      rc = SQLITE_LOCKED_SHAREDCACHE;
      goto trans_begun;
    }
  }
#endif

  /* Any read-only or read-write transaction implies a read-lock on 
  ** page 1. So if some other shared-cache client already has a write-lock 
  ** on page 1, the transaction cannot be opened. */
  rc = querySharedCacheTableLock(p, MASTER_ROOT, READ_LOCK);

/*
** Create a new cursor for the BTree whose root is on the page
** iTable. If a read-only cursor is requested, it is assumed that
** the caller already has at least a read-only transaction open
** on the database already. If a write-cursor is requested, then
** the caller is assumed to have an open write transaction.
**
** If wrFlag==0, then the cursor can only be used for reading.
** If wrFlag==1, then the cursor can be used for reading or for
** writing if other conditions for writing are also met.  These
** are the conditions that must be met in order for writing to
** be allowed:
** If the BTREE_WRCSR bit of wrFlag is clear, then the cursor can only
** be used for reading.  If the BTREE_WRCSR bit is set, then the cursor
** can be used for reading or for writing if other conditions for writing
** are also met.  These are the conditions that must be met in order
** for writing to be allowed:
**
** 1:  The cursor must have been opened with wrFlag==1
** 1:  The cursor must have been opened with wrFlag containing BTREE_WRCSR
**
** 2:  Other database connections that share the same pager cache
**     but which are not in the READ_UNCOMMITTED state may not have
**     cursors open with wrFlag==0 on the same table.  Otherwise
**     the changes made by this write cursor would be visible to
**     the read cursors in the other database connection.
**
** 3:  The database must be writable (not on read-only media)
**
** 4:  There must be an active transaction.
**
** The BTREE_FORDELETE bit of wrFlag may optionally be set if BTREE_WRCSR
** is set.  If FORDELETE is set, that is a hint to the implementation that
** this cursor will only be used to seek to and delete entries of an index
** as part of a larger DELETE statement.  The FORDELETE hint is not used by
** this implementation.  But in a hypothetical alternative storage engine 
** in which index entries are automatically deleted when corresponding table
** rows are deleted, the FORDELETE flag is a hint that all SEEK and DELETE
** operations on this cursor can be no-ops and all READ operations can 
** return a null row (2-bytes: 0x01 0x00).
**
** No checking is done to make sure that page iTable really is the
** root page of a b-tree.  If it is not, then the cursor acquired
** will not work correctly.
**
** It is assumed that the sqlite3BtreeCursorZero() has been called
** on pCur to initialize the memory space prior to invoking this routine.

** that the cursor has Cursor.eState==CURSOR_VALID.
**
** Failure is not possible.  This function always returns SQLITE_OK.
** It might just as well be a procedure (returning void) but we continue
** to return an integer result code for historical reasons.
*/
SQLITE_PRIVATE int sqlite3BtreeDataSize(BtCursor *pCur, u32 *pSize){
  assert( cursorHoldsMutex(pCur) );
  assert( cursorOwnsBtShared(pCur) );
  assert( pCur->eState==CURSOR_VALID );
  assert( pCur->iPage>=0 );
  assert( pCur->iPage<BTCURSOR_MAX_DEPTH );
  assert( pCur->apPage[pCur->iPage]->intKeyLeaf==1 );
  getCellInfo(pCur);
  *pSize = pCur->info.nPayload;
  return SQLITE_OK;

#ifndef SQLITE_OMIT_INCRBLOB
  if ( pCur->eState==CURSOR_INVALID ){
    return SQLITE_ABORT;
  }
#endif

  assert( cursorHoldsMutex(pCur) );
  assert( cursorOwnsBtShared(pCur) );
  rc = restoreCursorPosition(pCur);
  if( rc==SQLITE_OK ){
    assert( pCur->eState==CURSOR_VALID );
    assert( pCur->iPage>=0 && pCur->apPage[pCur->iPage] );
    assert( pCur->aiIdx[pCur->iPage]<pCur->apPage[pCur->iPage]->nCell );
    rc = accessPayload(pCur, offset, amt, pBuf, 0);
  }

  BtCursor *pCur,      /* Cursor pointing to entry to read from */
  u32 *pAmt            /* Write the number of available bytes here */
){
  u32 amt;
  assert( pCur!=0 && pCur->iPage>=0 && pCur->apPage[pCur->iPage]);
  assert( pCur->eState==CURSOR_VALID );
  assert( sqlite3_mutex_held(pCur->pBtree->db->mutex) );
  assert( cursorHoldsMutex(pCur) );
  assert( cursorOwnsBtShared(pCur) );
  assert( pCur->aiIdx[pCur->iPage]<pCur->apPage[pCur->iPage]->nCell );
  assert( pCur->info.nSize>0 );
  assert( pCur->info.pPayload>pCur->apPage[pCur->iPage]->aData || CORRUPT_DB );
  assert( pCur->info.pPayload<pCur->apPage[pCur->iPage]->aDataEnd ||CORRUPT_DB);
  amt = (int)(pCur->apPage[pCur->iPage]->aDataEnd - pCur->info.pPayload);
  if( pCur->info.nLocal<amt ) amt = pCur->info.nLocal;
  *pAmt = amt;

** the new child page does not match the flags field of the parent (i.e.
** if an intkey page appears to be the parent of a non-intkey page, or
** vice-versa).
*/
static int moveToChild(BtCursor *pCur, u32 newPgno){
  BtShared *pBt = pCur->pBt;

  assert( cursorHoldsMutex(pCur) );
  assert( cursorOwnsBtShared(pCur) );
  assert( pCur->eState==CURSOR_VALID );
  assert( pCur->iPage<BTCURSOR_MAX_DEPTH );
  assert( pCur->iPage>=0 );
  if( pCur->iPage>=(BTCURSOR_MAX_DEPTH-1) ){
    return SQLITE_CORRUPT_BKPT;
  }
  pCur->info.nSize = 0;

**
** pCur->idx is set to the cell index that contains the pointer
** to the page we are coming from.  If we are coming from the
** right-most child page then pCur->idx is set to one more than
** the largest cell index.
*/
static void moveToParent(BtCursor *pCur){
  assert( cursorHoldsMutex(pCur) );
  assert( cursorOwnsBtShared(pCur) );
  assert( pCur->eState==CURSOR_VALID );
  assert( pCur->iPage>0 );
  assert( pCur->apPage[pCur->iPage] );
  assertParentIndex(
    pCur->apPage[pCur->iPage-1], 
    pCur->aiIdx[pCur->iPage-1], 
    pCur->apPage[pCur->iPage]->pgno

** structure the flags byte is set to 0x02 or 0x0A, indicating an index
** b-tree).
*/
static int moveToRoot(BtCursor *pCur){
  MemPage *pRoot;
  int rc = SQLITE_OK;

  assert( cursorHoldsMutex(pCur) );
  assert( cursorOwnsBtShared(pCur) );
  assert( CURSOR_INVALID < CURSOR_REQUIRESEEK );
  assert( CURSOR_VALID   < CURSOR_REQUIRESEEK );
  assert( CURSOR_FAULT   > CURSOR_REQUIRESEEK );
  if( pCur->eState>=CURSOR_REQUIRESEEK ){
    if( pCur->eState==CURSOR_FAULT ){
      assert( pCur->skipNext!=SQLITE_OK );
      return pCur->skipNext;

** in ascending order.
*/
static int moveToLeftmost(BtCursor *pCur){
  Pgno pgno;
  int rc = SQLITE_OK;
  MemPage *pPage;

  assert( cursorHoldsMutex(pCur) );
  assert( cursorOwnsBtShared(pCur) );
  assert( pCur->eState==CURSOR_VALID );
  while( rc==SQLITE_OK && !(pPage = pCur->apPage[pCur->iPage])->leaf ){
    assert( pCur->aiIdx[pCur->iPage]<pPage->nCell );
    pgno = get4byte(findCell(pPage, pCur->aiIdx[pCur->iPage]));
    rc = moveToChild(pCur, pgno);
  }
  return rc;