Fossil

#!/usr/bin/make
#
# This is the top-level makefile for Fossil when the build is occurring
# on the Cygwin platform.
#
#### The toplevel directory of the source tree.  Fossil can be built
#    in a directory that is separate from the source tree.  Just change
#    the following to point from the build directory to the src/ folder.
#
SRCDIR = @srcdir@/src

#### The directory into which object code files should be written.
#    Having a "./" prefix in the value of this variable breaks our use of the
#    "makeheaders" tool when running make on the MinGW platform, apparently
#    due to some command line argument manipulation performed automatically
#    by the shell.
#
#
OBJDIR = bld

#### C Compiler and options for use in building executables that
#    will run on the platform that is doing the build.  This is used
#    to compile code-generator programs as part of the build process.
#    See TCC below for the C compiler for building the finished binary.
#
BCC = @CC_FOR_BUILD@

#### The suffix to add to final executable file.  When cross-compiling
#    to windows, make this ".exe".  Otherwise leave it blank.
#
E = @EXEEXT@

TCC = @CC@

#### Tcl shell for use in running the fossil testsuite.  If you do not
#    care about testing the end result, this can be blank.
#
TCLSH = tclsh

LIB = @LDFLAGS@ @EXTRA_LDFLAGS@ @LIBS@
TCC += @EXTRA_CFLAGS@ @CPPFLAGS@ @CFLAGS@ -DHAVE_AUTOCONFIG_H
INSTALLDIR =$(DESTDIR)@prefix@/bin
USE_SYSTEM_SQLITE = @USE_SYSTEM_SQLITE@
FOSSIL_ENABLE_TCL = @FOSSIL_ENABLE_TCL@
FOSSIL_ENABLE_TCL_STUBS = @FOSSIL_ENABLE_TCL_STUBS@
FOSSIL_ENABLE_TCL_PRIVATE_STUBS = @FOSSIL_ENABLE_TCL_PRIVATE_STUBS@
SQLITE_CFLAGS += -DSQLITE_WIN32_NO_ANSI -DSQLITE_WINNT_MAX_PATH_CHARS=4096

include $(SRCDIR)/main.mk

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

if {![cc-check-functions getpassphrase]} {
    # Haiku needs this
    cc-check-function-in-lib getpass bsd
}
cc-check-function-in-lib dlopen dl

make-template Makefile.in
make-template Makefile.Cygwin.in
make-config-header autoconfig.h -auto {USE_* FOSSIL_*}

** Options:
**   --case-sensitive <BOOL> override case-sensitive setting
**
** See also: addremove, add
*/
void delete_cmd(void){
  int i;

  Stmt loop;

  capture_case_sensitive_option();
  db_must_be_within_tree();




  db_begin_transaction();
  db_multi_exec("CREATE TEMP TABLE sfile(x TEXT PRIMARY KEY %s)",
                filename_collation());
  for(i=2; i<g.argc; i++){
    Blob treeName;
    char *zTreeName;

/*
** Rename a single file.
**
** The original name of the file is zOrig.  The new filename is zNew.
*/
static void mv_one_file(int vid, const char *zOrig, const char *zNew){
  int x = db_int(-1, "SELECT deleted FROM vfile WHERE pathname=%Q %s",
                         zNew, filename_collation());
  if( x>=0 ){
    if( x==0 ){
      fossil_fatal("cannot rename '%s' to '%s' since another file named '%s'"
                   " is currently under management", zOrig, zNew, zNew); 
    }else{
      fossil_fatal("cannot rename '%s' to '%s' since the delete of '%s' has "
                   "not yet been committed", zOrig, zNew, zNew);

  char *zQFilename;
  Blob extra;
  int useCheckouts = 0;
  int quiet = 0;
  int dryRunFlag = 0;
  int stopOnError = find_option("dontstop",0,0)==0;
  int rc;
  int nToDel = 0;
  
  dryRunFlag = find_option("dry-run","n",0)!=0;
  if( !dryRunFlag ){
    dryRunFlag = find_option("test",0,0)!=0; /* deprecated */
  }

  if( g.argc<3 ){

    fossil_fatal("\"all\" subcommand should be one of: "
                 "changes clean extra ignore list ls push pull rebuild sync");
  }
  verify_all_options();
  zFossil = quoteFilename(g.nameOfExe);
  if( useCheckouts ){
    db_prepare(&q,
       "SELECT DISTINCT substr(name, 7), name COLLATE nocase"
       "  FROM global_config"
       " WHERE substr(name, 1, 6)=='ckout:'"
       " ORDER BY 1"
    );
  }else{
    db_prepare(&q,
       "SELECT DISTINCT substr(name, 6), name COLLATE nocase"
       "  FROM global_config"
       " WHERE substr(name, 1, 5)=='repo:'"
       " ORDER BY 1"
    );
  }
  db_multi_exec("CREATE TEMP TABLE todel(x TEXT)");
  while( db_step(&q)==SQLITE_ROW ){
    const char *zFilename = db_column_text(&q, 0);

    if( file_access(zFilename, 0)

     || !file_is_canonical(zFilename)

     || (useCheckouts && file_isdir(zFilename)!=1)

    ){
      db_multi_exec("INSERT INTO todel VALUES(%Q)", db_column_text(&q, 1));
      nToDel++;
      continue;
    }
    if( zCmd[0]=='l' ){
      fossil_print("%s\n", zFilename);
      continue;
    }
    zQFilename = quoteFilename(zFilename);

    }
  }
  db_finalize(&q);
  
  /* If any repositories whose names appear in the ~/.fossil file could not
  ** be found, remove those names from the ~/.fossil file.
  */
  if( nToDel>0 ){




    const char *zSql = "DELETE FROM global_config WHERE name IN toDel";





    if( dryRunFlag ){
      fossil_print("%s\n", zSql);
    }else{
      db_multi_exec(zSql);
    }

  }
}

    @ DELETE FROM reportfmt;
    @ INSERT INTO reportfmt SELECT * FROM _xfer_reportfmt;
    @ DROP TABLE _xfer_user;
    @ DROP TABLE _xfer_reportfmt;
  ;
  db_multi_exec(zSQL);
}

/*
** Mask of modified configuration sets
*/
static int rebuildMask = 0;

/*
** Rebuild auxiliary tables as required by configuration changes.
*/
void configure_rebuild(void){
  if( rebuildMask & CONFIGSET_TKT ){
    ticket_rebuild();
  }
  rebuildMask = 0;
}

/*
** Return true if z[] is not a "safe" SQL token.  A safe token is one of:
**
**   *   A string literal
**   *   A blob literal
**   *   An integer literal  (no floating point)

        blob_appendf(&sql, ", %s=%s", azToken[jj], azToken[jj+1]);
      }
      blob_appendf(&sql, " WHERE %s=%s AND mtime<%s",
                   aType[ii].zPrimKey, azToken[1], azToken[0]);
      db_multi_exec("%s", blob_str(&sql));
    }
    blob_reset(&sql);
    rebuildMask |= thisMask;
  }else{
    /* Otherwise, the old format */
    if( (configure_is_exportable(zName) & groupMask)==0 ) return;
    if( fossil_strcmp(zName, "logo-image")==0 ){
      Stmt ins;
      db_prepare(&ins,
        "REPLACE INTO config(name, value, mtime) VALUES(:name, :value, now())"

        db_multi_exec(zRepositorySchemaDefaultReports);
      }
    }
    db_end_transaction(0);
    fossil_print("Configuration reset to factory defaults.\n");
    fossil_print("To recover, use:  %s %s import %s\n",
            g.argv[0], g.argv[1], zBackup);
    rebuildMask |= mask;
  }else
  {
    fossil_fatal("METHOD should be one of:"
                 " export import merge pull push reset");
  }
  configure_rebuild();
}

/*
** Open a database file.  Return a pointer to the new database
** connection.  An error results in process abort.
*/
LOCAL sqlite3 *db_open(const char *zDbName){
  int rc;

  sqlite3 *db;

#if defined(__CYGWIN__)
  zDbName = fossil_utf8_to_filename(zDbName);
#endif
  if( g.fSqlTrace ) fossil_trace("-- sqlite3_open: [%s]\n", zDbName);

  rc = sqlite3_open_v2(
       zDbName, &db,
       SQLITE_OPEN_READWRITE | SQLITE_OPEN_CREATE,
       g.zVfsName
  );
  if( rc!=SQLITE_OK ){
    db_err("[%s]: %s", zDbName, sqlite3_errmsg(db));
  }
  sqlite3_busy_timeout(db, 5000);
  sqlite3_wal_autocheckpoint(db, 1);  /* Set to checkpoint frequently */
  sqlite3_create_function(db, "now", 0, SQLITE_ANY, 0, db_now_function, 0, 0);

    /*
    ** Copy all settings from the supplied template repository.
    */
    db_multi_exec(
      "INSERT OR REPLACE INTO config"
      " SELECT name,value,mtime FROM settingSrc.config"
      "  WHERE (name IN %s OR name IN %s)"
      "    AND name NOT GLOB 'project-*'"
      "    AND name NOT GLOB 'short-project-*';",
      configure_inop_rhs(CONFIGSET_ALL),
      db_setting_inop_rhs()
    );
    db_multi_exec(
      "REPLACE INTO reportfmt SELECT * FROM settingSrc.reportfmt;"
    );

  return z;
}
char *db_get_mtime(const char *zName, char *zFormat, char *zDefault){
  char *z = 0;
  if( g.repositoryOpen ){
    z = db_text(0, "SELECT mtime FROM config WHERE name=%Q", zName);
  }





  if( z==0 ){
    z = zDefault;
  }else if( zFormat!=0 ){
    z = db_text(0, "SELECT strftime(%Q,%Q,'unixepoch');", zFormat, z);
  }
  return z;
}

** Options:
**   --keep     Only modify the manifest and manifest.uuid files
**   --nested   Allow opening a repository inside an opened checkout
**
** See also: close
*/
void cmd_open(void){

  int keepFlag;
  int allowNested;
  char **oldArgv;
  int oldArgc;
  static char *azNewArgv[] = { 0, "checkout", "--prompt", 0, 0, 0 };

  url_proxy_options();
  keepFlag = find_option("keep",0,0)!=0;
  allowNested = find_option("nested",0,0)!=0;
  if( g.argc!=3 && g.argc!=4 ){
    usage("REPOSITORY-FILENAME ?VERSION?");

                   "COMMIT; PRAGMA journal_mode=WAL; BEGIN;",
#endif
                   (char*)0);
  db_delete_on_failure(LOCALDB_NAME);
  db_open_local(0);
  db_lset("repository", g.argv[2]);
  db_record_repository_filename(g.argv[2]);



  db_lset_int("checkout", 0);

  oldArgv = g.argv;
  oldArgc = g.argc;

  azNewArgv[0] = g.argv[0];
  g.argv = azNewArgv;
  g.argc = 3;
  if( oldArgc==4 ){
    azNewArgv[g.argc-1] = oldArgv[3];
  }else if( !db_exists("SELECT 1 FROM event WHERE type='ci'") ){
    azNewArgv[g.argc-1] = "--latest";
  }else{
    azNewArgv[g.argc-1] = db_get("main-branch", "trunk");
  }
  if( keepFlag ){
    azNewArgv[g.argc++] = "--keep";
  }
  checkout_cmd();
  g.argc = 2;
  info_cmd();

}

/*
** Print the value of a setting named zName
*/
static void print_setting(
  const struct stControlSettings *ctrlSetting,

  x2 = c2&0xff;
  c |= (x1*(n-i) + x2*i)/n & 0xff;
  return c;
}

/*
** WEBPAGE: annotate
** WEBPAGE: blame
**
** Query parameters:
**
**    checkin=ID          The manifest ID at which to start the annotation
**    filename=FILENAME   The filename.
**    filevers            Show file versions rather than check-in versions
**    log=BOOLEAN         Show a log of versions analyzed

  int showLog = 0;       /* True to display the log */
  const char *zFilename; /* Name of file to annotate */
  const char *zCI;       /* The check-in containing zFilename */
  Annotator ann;
  HQuery url;
  struct AnnVers *p;
  unsigned clr1, clr2, clr;
  int bBlame = g.zPath[0]=='b';/* True for BLAME output.  False for ANNOTATE. */

  /* Gather query parameters */
  showLog = atoi(PD("log","1"));
  login_check_credentials();
  if( !g.perm.Read ){ login_needed(); return; }
  if( exclude_spiders("annotate") ) return;
  mid = name_to_typed_rid(PD("checkin","0"),"ci");

  for(i=0; i<ann.nOrig; i++){
    int iVers = ann.aOrig[i].iVers;
    char *z = (char*)ann.aOrig[i].z;
    int n = ann.aOrig[i].n;
    char zPrefix[300];
    z[n] = 0;
    if( iLimit>ann.nVers && iVers<0 ) iVers = ann.nVers-1;

    if( bBlame ){
      if( iVers>=0 ){
        struct AnnVers *p = ann.aVers+iVers;
        char *zLink = xhref("target='infowindow'", "%R/info/%S", p->zMUuid);
        sqlite3_snprintf(sizeof(zPrefix), zPrefix,
             "<span style='background-color:%s'>"
             "%s%.10s</a> %s</span> %13.13s:",
             p->zBgColor, zLink, p->zMUuid, p->zDate, p->zUser);
        fossil_free(zLink);
      }else{
        sqlite3_snprintf(sizeof(zPrefix), zPrefix, "%36s", "");
      }
    }else{
      if( iVers>=0 ){
        struct AnnVers *p = ann.aVers+iVers;
        char *zLink = xhref("target='infowindow'", "%R/info/%S", p->zMUuid);
        sqlite3_snprintf(sizeof(zPrefix), zPrefix,
             "<span style='background-color:%s'>"
             "%s%.10s</a> %s</span> %4d:",
             p->zBgColor, zLink, p->zMUuid, p->zDate, i+1);
        fossil_free(zLink);
      }else{
        sqlite3_snprintf(sizeof(zPrefix), zPrefix, "%22s%4d:", "", i+1);
      }
    }
    @ %s(zPrefix) %h(z)

  }
  @ </pre>
  style_footer();
}

** The file status information from the most recent stat() call.
**
** Use _stati64 rather than stat on windows, in order to handle files
** larger than 2GB.
*/
#if defined(_WIN32) && (defined(__MSVCRT__) || defined(_MSC_VER))
# undef stat
# define stat _fossil_stati64
struct stat {
    i64 st_size;
    i64 st_mtime;
    int st_mode;
};
#endif
/*
** On Windows S_ISLNK always returns FALSE.
*/
#if !defined(S_ISLNK)
# define S_ISLNK(x) (0)
#endif

  char *zMbcs = fossil_utf8_to_filename(zFilename);
  if( isWd && g.allowSymlinks ){
    rc = lstat(zMbcs, buf);
  }else{
    rc = stat(zMbcs, buf);
  }
#else
  WIN32_FILE_ATTRIBUTE_DATA attr;
  wchar_t *zMbcs = fossil_utf8_to_filename(zFilename);
  rc = !GetFileAttributesExW(zMbcs, GetFileExInfoStandard, &attr);
  if( !rc ){
    ULARGE_INTEGER ull;
    ull.LowPart = attr.ftLastWriteTime.dwLowDateTime;
    ull.HighPart = attr.ftLastWriteTime.dwHighDateTime;
    buf->st_mode = (attr.dwFileAttributes&FILE_ATTRIBUTE_DIRECTORY)?
                    S_IFDIR:S_IFREG;
    buf->st_size = (((i64)attr.nFileSizeHigh)<<32) | attr.nFileSizeLow;
    buf->st_mtime = ull.QuadPart / 10000000ULL - 11644473600ULL;
  }
#endif
  fossil_filename_free(zMbcs);
  return rc;
}

/*
** Fill in the fileStat variable for the file named zFilename.

** Wrapper around the chdir() system call.
** If bChroot=1, do a chroot to this dir as well
** (UNIX only)
*/
int file_chdir(const char *zChDir, int bChroot){
#ifdef _WIN32
  wchar_t *zPath = fossil_utf8_to_filename(zChDir);
  int rc = SetCurrentDirectoryW(zPath)==0;
#else
  char *zPath = fossil_utf8_to_filename(zChDir);
  int rc = chdir(zPath);
  if( !rc && bChroot ){
    rc = chroot(zPath);
    if( !rc ) rc = chdir("/");
  }

}

/*
** Set the mtime for a file.
*/
void file_set_mtime(const char *zFilename, i64 newMTime){
#if !defined(_WIN32)
  char *zMbcs;
  struct timeval tv[2];
  memset(tv, 0, sizeof(tv[0])*2);
  tv[0].tv_sec = newMTime;
  tv[1].tv_sec = newMTime;
  zMbcs = fossil_utf8_to_filename(zFilename);
  utimes(zMbcs, tv);
#else
  struct _utimbuf tb;
  wchar_t *zMbcs = fossil_utf8_to_filename(zFilename);
  tb.actime = newMTime;
  tb.modtime = newMTime;
  _wutime(zMbcs, &tb);

    }
    hyperlink_to_uuid(zShortCkin);
    @ %w(zCom) (user:
    hyperlink_to_user(zUser, zDate, "");
    @ branch: %h(zBr))
    if( g.perm.Hyperlink && zUuid ){
      const char *z = zFilename;
      @ %z(href("%R/annotate?checkin=%S&filename=%h",zCkin,z))
      @ [annotate]</a>
      @ %z(href("%R/blame?checkin=%S&filename=%h",zCkin,z))
      @ [blame]</a>
      @ %z(href("%R/timeline?n=200&uf=%S",zUuid))[checkins&nbsp;using]</a>
      if( fpid ){
        @ %z(href("%R/fdiff?v1=%S&v2=%S&sbs=1",zPUuid,zUuid))[diff]</a>
      }



    }
    if( fDebug & FINFO_DEBUG_MLINK ){
      int srcid = db_int(0, "SELECT srcid FROM delta WHERE rid=%d", frid);
      int sz = db_int(0, "SELECT length(content) FROM blob WHERE rid=%d", frid);
      @ <br>fid=%d(frid) pid=%d(fpid) mid=%d(fmid) sz=%d(sz)
      if( srcid ){
        @ srcid=%d(srcid)

  if( !zVerbose ){
    zVerbose = P("detail"); /* deprecated */
  }
  verboseFlag = (zVerbose!=0) && !is_false(zVerbose);
  if( !verboseFlag && sideBySide ) verboseFlag = 1;
  zFrom = P("from");
  zTo = P("to");
  if( sideBySide || verboseFlag ){
    style_submenu_element("Hide Diff", "hidediff",
                          "%R/vdiff?from=%T&to=%T&sbs=0",
                          zFrom, zTo);
  }
  if( !sideBySide ){
    style_submenu_element("Side-by-side Diff", "sbsdiff",
                          "%R/vdiff?from=%T&to=%T&sbs=1",
                          zFrom, zTo);
  }
  if( sideBySide || !verboseFlag ) {
    style_submenu_element("Unified Diff", "udiff",

    hyperlink_to_uuid(zVers);
    if( zBr && zBr[0] ){
      @ on branch %z(href("%R/timeline?r=%T",zBr))%h(zBr)</a>
    }
    @ - %!w(zCom) (user:
    hyperlink_to_user(zUser,zDate,")");
    if( g.perm.Hyperlink ){
      @ %z(href("%R/finfo?name=%T&ci=%S",zName,zVers))[ancestry]</a>
      @ %z(href("%R/annotate?checkin=%S&filename=%T",zVers,zName))
      @ [annotate]</a>
      @ %z(href("%R/blame?checkin=%S&filename=%T",zVers,zName))
      @ [blame]</a>
    }
    cnt++;
    if( pDownloadName && blob_size(pDownloadName)==0 ){
      blob_append(pDownloadName, zName, -1);
    }
  }
  if( prevName ){

    content_get(v1, &c1);
    content_get(v2, &c2);
    text_diff(&c1, &c2, pOut, pRe, diffFlags);
    blob_reset(&c1);
    blob_reset(&c2);
    return;
  }

  sideBySide = !is_false(PD("sbs","1"));
  zV1 = db_text(0, "SELECT uuid FROM blob WHERE rid=%d", v1);
  zV2 = db_text(0, "SELECT uuid FROM blob WHERE rid=%d", v2);
  diffFlags = construct_diff_flags(1, sideBySide) | DIFF_HTML;

  style_header("Diff");
  style_submenu_element("Patch", "Patch", "%s/fdiff?v1=%T&v2=%T&patch",

  }
  @ <hr />
  content_get(rid, &content);
  if( renderAsWiki ){
    wiki_convert(&content, 0, 0);
  }else if( renderAsHtml ){
    @ <iframe src="%R/raw/%T(blob_str(&downloadName))?name=%s(zUuid)"
    @   width="100%%" frameborder="0" marginwidth="0" marginheight="0"
    @   sandbox="allow-same-origin"
    @   onload="this.height = this.contentDocument.documentElement.scrollHeight;">
    @ </iframe>
  }else{
    style_submenu_element("Hex","Hex", "%s/hexdump?name=%s", g.zTop, zUuid);
    zMime = mimetype_from_content(&content);
    @ <blockquote>
    if( zMime==0 ){

  const char *zNewTagFlag;
  const char *zNewTag;
  const char *zNewBrFlag;
  const char *zNewBranch;
  const char *zCloseFlag;
  int fPropagateColor;          /* True if color propagates before edit */
  int fNewPropagateColor;       /* True if color propagates after edit */
  int fHasClosed = 0;           /* True if closed tag already set */
  const char *zChngTime = 0;     /* Value of chngtime= query param, if any */
  char *zUuid;
  Blob comment;
  char *zBranchName = "";
  Stmt q;

  login_check_credentials();
  if( !g.perm.Write ){ login_needed(); return; }
  rid = name_to_typed_rid(P("r"), "ci");
  zUuid = db_text(0, "SELECT uuid FROM blob WHERE rid=%d", rid);
  zComment = db_text(0, "SELECT coalesce(ecomment,comment)"

      sqlite3_snprintf(sizeof(zLabel), zLabel, "c%d", tagid);
      if( P(zLabel) ){
        db_multi_exec("REPLACE INTO newtags VALUES(%Q,'-',NULL)", zTag);
      }
    }
    db_finalize(&q);
    if( zCloseFlag[0] ){
      db_multi_exec("REPLACE INTO newtags VALUES('closed','%s',NULL)",
          is_a_leaf(rid)?"+":"*");
    }
    if( zNewTagFlag[0] && zNewTag[0] ){
      db_multi_exec("REPLACE INTO newtags VALUES('sym-%q','+',NULL)", zNewTag);
    }
    if( zNewBrFlag[0] && zNewBranch[0] ){
      db_multi_exec(
        "REPLACE INTO newtags "

    }
    cgi_redirectf("ci?name=%s", zUuid);
  }
  blob_zero(&comment);
  blob_append(&comment, zNewComment, -1);
  zUuid[10] = 0;
  style_header("Edit Check-in [%s]", zUuid);
  /*
  ** chgbn: Handle change of branch name in remaining of form.
  */
  @ <script>
  @ function chgbn(val, branch){
  @   if (!val) val=branch;
  @   gebi('newbr').checked=(val!=branch);
  @   cidbrid = document.getElementById('cbranch');
  @   if( cidbrid ) cidbrid.textContent = val;
  @ }
  @ </script>
  if( P("preview") ){
    Blob suffix;
    int nTag = 0;
    @ <b>Preview:</b>
    @ <blockquote>
    @ <table border=0>
    if( zNewColor && zNewColor[0] ){

  @ <tr><th align="right" valign="top">Tags:</th>
  @ <td valign="top">
  @ <label><input type="checkbox" id="newtag" name="newtag"%s(zNewTagFlag) />
  @ Add the following new tag name to this check-in:</label>
  @ <input type="text" style="width:15;" name="tagname" value="%h(zNewTag)"
  @ onkeyup="gebi('newtag').checked=!!this.value" />
  db_prepare(&q,
     "SELECT tag.tagid, tagname, tagxref.value FROM tagxref, tag"
     " WHERE tagxref.rid=%d AND tagtype>0 AND tagxref.tagid=tag.tagid"
     " ORDER BY CASE WHEN tagname GLOB 'sym-*' THEN substr(tagname,5)"
     "               ELSE tagname END /*sort*/",
     rid
  );
  while( db_step(&q)==SQLITE_ROW ){
    int tagid = db_column_int(&q, 0);
    const char *zTagName = db_column_text(&q, 1);
    int isSpecialTag = strncmp(zTagName, "sym-", 4)!=0;
    char zLabel[30];

    if (tagid == TAG_CLOSED){
      fHasClosed = 1;
    }else if (tagid == TAG_COMMENT){
      continue;
    }else if (tagid == TAG_BRANCH){
      zBranchName = mprintf("%s", db_column_text(&q, 2));
      continue;
    }else if( !isSpecialTag && zBranchName &&
        strcmp(&zTagName[4], zBranchName)==0){
      continue;
    }
    sqlite3_snprintf(sizeof(zLabel), zLabel, "c%d", tagid);
    @ <br /><label>
    if( P(zLabel) ){
      @ <input type="checkbox" name="c%d(tagid)" checked="checked" />
    }else{
      @ <input type="checkbox" name="c%d(tagid)" />
    }
    if( isSpecialTag ){
      @ Cancel special tag <b>%h(zTagName)</b></label>
    }else{
      @ Cancel tag <b>%h(&zTagName[4])</b></label>
    }
  }
  db_finalize(&q);
  @ </td></tr>

  @ <tr><th align="right" valign="top">Branching:</th>
  @ <td valign="top">
  @ <label><input id="newbr" type="checkbox" name="newbr"%s(zNewBrFlag) />
  @ Make this check-in the start of a new branch named:</label>
  @ <input type="text" style="width:15;" name="brname" value="%h(zNewBranch)"

  @ onkeyup="chgbn(this.value,'%h(zBranchName)')" /></td></tr>
  if( !fHasClosed ){
    if( is_a_leaf(rid) ){




      @ <tr><th align="right" valign="top">Leaf Closure:</th>
      @ <td valign="top">
      @ <label><input type="checkbox" name="close"%s(zCloseFlag) />
      @ Mark this leaf as "closed" so that it no longer appears on the
      @ "leaves" page and is no longer labeled as a "<b>Leaf</b>"</label>
      @ </td></tr>
    }else if( zBranchName ){
      @ <tr><th align="right" valign="top">Branch Closure:</th>
      @ <td valign="top">
      @ <label><input type="checkbox" name="close"%s(zCloseFlag) />
      @ Mark branch
      @ <span style="font-weight:bold" id="cbranch">%h(zBranchName)</span>
      @ as "closed" so that its leafs no longer appear on the "leaves" page
      @ and are no longer labeled as a leaf "<b>Leaf</b>"</label>
      @ </td></tr>
    }
  }
  if(zBranchName) fossil_free(zBranchName);


  @ <tr><td colspan="2">
  @ <input type="submit" name="preview" value="Preview" />
  @ <input type="submit" name="apply" value="Apply Changes" />
  @ <input type="submit" name="cancel" value="Cancel" />
  @ </td></tr>
  @ </table>
  @ </div></form>
  style_footer();
}

  SETBUF(jo, "projectCode");
  cson_object_set(jo, "compiler", cson_value_new_string(COMPILER_NAME, strlen(COMPILER_NAME)));

  jv2 = cson_value_new_object();
  jo2 = cson_value_get_object(jv2);
  cson_object_set(jo, "sqlite", jv2);
  sqlite3_snprintf(BufLen, zBuf, "%.19s [%.10s] (%s)",
                   sqlite3_sourceid(), &sqlite3_sourceid()[20], sqlite3_libversion());
  SETBUF(jo2, "version");
  zDb = db_name("repository");
  cson_object_set(jo2, "pageCount", cson_value_new_integer((cson_int_t)db_int(0, "PRAGMA %s.page_count", zDb)));
  cson_object_set(jo2, "pageSize", cson_value_new_integer((cson_int_t)db_int(0, "PRAGMA %s.page_size", zDb)));
  cson_object_set(jo2, "freeList", cson_value_new_integer((cson_int_t)db_int(0, "PRAGMA %s.freelist_count", zDb)));
  sqlite3_snprintf(BufLen, zBuf, "%s", db_text(0, "PRAGMA %s.encoding", zDb));
  SETBUF(jo2, "encoding");

/*4*/   "   coalesce(event.euser, event.user),"
/*5*/   "   coalesce(event.ecomment, event.comment),"
/*6*/   " (SELECT uuid FROM blob WHERE rid=mlink.pid),"  /* Parent file uuid */
/*7*/   "   event.bgcolor,"
/*8*/   " b.size,"
/*9*/   " (mlink.pid==0) AS isNew,"
/*10*/  " (mlink.fid==0) AS isDel"
        "  FROM mlink, blob b, event, blob ci, filename"
        " WHERE filename.name=%Q"
        "   AND mlink.fnid=filename.fnid"
        "   AND b.rid=mlink.fid"
        "   AND event.objid=mlink.mid"
        "   AND event.objid=ci.rid",
        zFilename
               );

** both are specified, which one takes precedence is unspecified.
*/
static char json_timeline_add_tag_branch_clause(Blob *pSql,
                                                cson_object * pPayload){
  char const * zTag = NULL;
  char const * zBranch = NULL;
  char const * zMiOnly = NULL;
  char const * zUnhide = NULL;
  int tagid = 0;
  if(! g.perm.Read ){
    return 0;
  }
  zTag = json_find_option_cstr("tag",NULL,NULL);
  if(!zTag || !*zTag){
    zBranch = json_find_option_cstr("branch",NULL,NULL);
    if(!zBranch || !*zBranch){
      return 0;
    }
    zTag = zBranch;
    zMiOnly = json_find_option_cstr("mionly",NULL,NULL);
  }
  zUnhide = json_find_option_cstr("unhide",NULL,NULL);
  tagid = db_int(0, "SELECT tagid FROM tag WHERE tagname='sym-%q'",
                 zTag);
  if(tagid<=0){
    return -1;
  }
  if(pPayload){
    cson_object_set( pPayload, zBranch ? "branch" : "tag", json_new_string(zTag) );
  }
  blob_appendf(pSql,
               " AND ("
               " EXISTS(SELECT 1 FROM tagxref"
               "        WHERE tagid=%d AND tagtype>0 AND rid=blob.rid)",
               tagid);
  if(!zUnhide){
    blob_appendf(pSql,
               " AND NOT EXISTS(SELECT 1 FROM plink JOIN tagxref ON rid=blob.rid"
               "    WHERE tagid=%d AND tagtype>0 AND rid=blob.rid)",
               TAG_HIDDEN);
  }
  if(zBranch){
    /* from "r" flag code in page_timeline().*/
    blob_appendf(pSql,
                 " OR EXISTS(SELECT 1 FROM plink JOIN tagxref ON rid=cid"
                 "    WHERE tagid=%d AND tagtype>0 AND pid=blob.rid)",
                 tagid);
    if( !zUnhide ){
      blob_appendf(pSql,
                 " AND NOT EXISTS(SELECT 1 FROM plink JOIN tagxref ON rid=cid"
                 "    WHERE tagid=%d AND tagtype>0 AND pid=blob.rid)",
                 TAG_HIDDEN);
    }
    if( zMiOnly==0 ){
      blob_appendf(pSql,
                 " OR EXISTS(SELECT 1 FROM plink JOIN tagxref ON rid=pid"
                 "    WHERE tagid=%d AND tagtype>0 AND cid=blob.rid)",
                 tagid);
      if( !zUnhide ){
        blob_appendf(pSql,
                 " AND NOT EXISTS(SELECT 1 FROM plink JOIN tagxref ON rid=pid"
                 "    WHERE tagid=%d AND tagtype>0 AND cid=blob.rid)",
                 TAG_HIDDEN);
      }
    }
  }
  blob_append(pSql," ) ",3);
  return 1;
}
/*
** Helper for the timeline family of functions.  Possibly appends 1

  char *zErrMsg = "";
  int uid;                     /* User id logged in user */
  char *zSha1Pw;
  const char *zIpAddr;         /* IP address of requestor */

  login_check_credentials();
  sqlite3_create_function(g.db, "constant_time_cmp", 2, SQLITE_UTF8, 0,
                  constant_time_cmp_function, 0, 0);
  zUsername = P("u");
  zPasswd = P("p");
  anonFlag = P("anon")!=0;
  if( P("out")!=0 ){
    login_clear_login_data();
    redirect_to_g();
  }

  zOtherRepo = db_text(0, 
       "SELECT value FROM config WHERE name='peer-repo-%q'",
       zCode
  );
  if( zOtherRepo==0 ) return 0;  /* No such peer repository */

  rc = sqlite3_open_v2(
       zOtherRepo, &pOther,
       SQLITE_OPEN_READWRITE | SQLITE_OPEN_CREATE,
       g.zVfsName
  );
  if( rc==SQLITE_OK ){
    sqlite3_create_function(pOther,"now",0,SQLITE_ANY,0,db_now_function,0,0);
    sqlite3_create_function(pOther, "constant_time_cmp", 2, SQLITE_UTF8, 0,
                  constant_time_cmp_function, 0, 0);
    sqlite3_busy_timeout(pOther, 5000);
    zSQL = mprintf(
      "SELECT cexpire FROM user"
      " WHERE login=%Q"
      "   AND ipaddr=%Q"
      "   AND length(cap)>0"
      "   AND length(pw)>0"

  const char *zPublicPages = 0; /* GLOB patterns of public pages */
  const char *zLogin = 0;       /* Login user for credentials */

  /* Only run this check once.  */
  if( g.userUid!=0 ) return;

  sqlite3_create_function(g.db, "constant_time_cmp", 2, SQLITE_UTF8, 0,
                  constant_time_cmp_function, 0, 0);

  /* If the HTTP connection is coming over 127.0.0.1 and if
  ** local login is disabled and if we are using HTTP and not HTTPS, 
  ** then there is no need to check user credentials.
  **
  ** This feature allows the "fossil ui" command to give the user
  ** full access rights without having to log in.

      const char *zLabel = db_column_text(&q, 0);
      db_multi_exec(
         "DELETE FROM config WHERE name GLOB 'peer-*-%q'",
         &zLabel[10]
      );
      continue;
    }
    rc = sqlite3_open_v2(
         zRepoName, &pPeer,
         SQLITE_OPEN_READWRITE,
         g.zVfsName
    );
    if( rc!=SQLITE_OK ){
      blob_appendf(&err, "%s%s: %s%s", zPrefix, zRepoName,
                   sqlite3_errmsg(pPeer), zSuffix);
      nErr++;
      sqlite3_close(pPeer);
      continue;
    }

  }

  /* Make sure the other repository is a valid Fossil database */
  if( file_size(zRepo)<0 ){
    *pzErrMsg = mprintf("repository file \"%s\" does not exist", zRepo);
    return;
  }
  rc = sqlite3_open_v2(
       zRepo, &pOther,
       SQLITE_OPEN_READWRITE | SQLITE_OPEN_CREATE,
       g.zVfsName
  );
  if( rc!=SQLITE_OK ){
    *pzErrMsg = mprintf(sqlite3_errmsg(pOther));
  }else{
    rc = sqlite3_exec(pOther, "SELECT count(*) FROM user", 0, 0, pzErrMsg);
  }
  sqlite3_close(pOther);
  if( rc ) return;

#define GLOBAL_URL()      ((UrlData *)(&g.urlIsFile))

struct Global {
  int argc; char **argv;  /* Command-line arguments to the program */
  char *nameOfExe;        /* Full path of executable. */
  const char *zErrlog;    /* Log errors to this file, if not NULL */
  int isConst;            /* True if the output is unchanging */
  const char *zVfsName;   /* The VFS to use for database connections */
  sqlite3 *db;            /* The connection to the databases */
  sqlite3 *dbConfig;      /* Separate connection for global_config table */
  int useAttach;          /* True if global_config is attached to repository */
  const char *zConfigDbName;/* Path of the config database. NULL if not open */
  sqlite3_int64 now;      /* Seconds since 1970 */
  int repositoryOpen;     /* True if the main repository database is open */
  char *zRepositoryName;  /* Name of the repository database */

#endif
int main(int argc, char **argv)
#endif
{
  const char *zCmdName = "unknown";
  int idx;
  int rc;
  sqlite3_config(SQLITE_CONFIG_SINGLETHREAD);
  sqlite3_config(SQLITE_CONFIG_LOG, fossil_sqlite_log, 0);
  memset(&g, 0, sizeof(g));
  g.now = time(0);
  g.httpHeader = empty_blob;
#ifdef FOSSIL_ENABLE_JSON
#if defined(NDEBUG)
  g.json.errorDetailParanoia = 2 /* FIXME: make configurable

  expand_args_option(argc, argv);
#ifdef FOSSIL_ENABLE_TCL
  memset(&g.tcl, 0, sizeof(TclContext));
  g.tcl.argc = g.argc;
  g.tcl.argv = copy_args(g.argc, g.argv); /* save full arguments */
#endif
  g.mainTimerId = fossil_timer_start();
  g.zVfsName = find_option("vfs",0,1);
  if( g.zVfsName==0 ){
    g.zVfsName = fossil_getenv("FOSSIL_VFS");
#if defined(__CYGWIN__)
    if( g.zVfsName==0 && sqlite3_libversion_number()>=3008001 ){
      g.zVfsName = "win32-longpath";
    }
#endif
  }
  if( g.zVfsName ){
    sqlite3_vfs *pVfs = sqlite3_vfs_find(g.zVfsName);
    if( pVfs ){
      sqlite3_vfs_register(pVfs, 1);
    }else{
      fossil_fatal("no such VFS: \"%s\"", g.zVfsName);
    }
  }
  if( fossil_getenv("GATEWAY_INTERFACE")!=0 && !find_option("nocgi", 0, 0)){
    zCmdName = "cgi";
    g.isHTTP = 1;
  }else if( g.argc<2 ){
    fossil_print(
       "Usage: %s COMMAND ...\n"
       "   or: %s help           -- for a list of common commands\n"

  }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);
    fossil_print("zlib %s, loaded %s\n", ZLIB_VERSION, zlibVersion());
#if defined(FOSSIL_ENABLE_SSL)
    fossil_print("SSL (%s)\n", OPENSSL_VERSION_TEXT);
#endif
#if defined(FOSSIL_ENABLE_TCL)
    Th_FossilInit(TH_INIT_DEFAULT | TH_INIT_FORCE_TCL);

# build is done from, i.e. the checkout belongs to. Do not sync/push
# the repository after running the tests.
test:	$(OBJDIR) $(APPNAME)
	$(TCLSH) $(SRCDIR)/../test/tester.tcl $(APPNAME)

$(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 = -DSQLITE_OMIT_LOAD_EXTENSION=1 \
                 -DSQLITE_THREADSAFE=0 \
                 -DSQLITE_DEFAULT_FILE_FORMAT=4 \
                 -DSQLITE_OMIT_DEPRECATED \
                 -DSQLITE_ENABLE_EXPLAIN_COMMENTS \
                 -Dlocaltime=fossil_localtime \
                 -DSQLITE_ENABLE_LOCKING_STYLE=0

# Setup the options used to compile the included SQLite shell.
SHELL_OPTIONS = -Dmain=sqlite3_shell \
                -DSQLITE_OMIT_LOAD_EXTENSION=1 \
                -Dsqlite3_strglob=strglob

# The USE_SYSTEM_SQLITE variable may be undefined, set to 0, or set
# to 1. If it is set to 1, then there is no need to build or link
# the sqlite3.o object. Instead, the system sqlite will be linked
# using -lsqlite3.
SQLITE3_OBJ.1 = 
SQLITE3_OBJ.0 = $(OBJDIR)/sqlite3.o

	$(OBJDIR)/translate $(SRCDIR)/zip.c >$(OBJDIR)/zip_.c

$(OBJDIR)/zip.o:	$(OBJDIR)/zip_.c $(OBJDIR)/zip.h  $(SRCDIR)/config.h
	$(XTCC) -o $(OBJDIR)/zip.o -c $(OBJDIR)/zip_.c

$(OBJDIR)/zip.h:	$(OBJDIR)/headers
$(OBJDIR)/sqlite3.o:	$(SRCDIR)/sqlite3.c
	$(XTCC) $(SQLITE_OPTIONS) $(SQLITE_CFLAGS) -c $(SRCDIR)/sqlite3.c -o $(OBJDIR)/sqlite3.o

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

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

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

  wysiwyg
  xfer
  xfersetup
  zip
  http_ssl
}

# Options used to compile the included SQLite library.
#
set SQLITE_OPTIONS {
  -DSQLITE_OMIT_LOAD_EXTENSION=1
  -DSQLITE_THREADSAFE=0
  -DSQLITE_DEFAULT_FILE_FORMAT=4
  -DSQLITE_OMIT_DEPRECATED
  -DSQLITE_ENABLE_EXPLAIN_COMMENTS
  -Dlocaltime=fossil_localtime
  -DSQLITE_ENABLE_LOCKING_STYLE=0
}
#lappend SQLITE_OPTIONS -DSQLITE_ENABLE_FTS3=1
#lappend SQLITE_OPTIONS -DSQLITE_ENABLE_STAT4
#lappend SQLITE_OPTIONS -DSQLITE_WIN32_NO_ANSI
#lappend SQLITE_OPTIONS -DSQLITE_WINNT_MAX_PATH_CHARS=4096

# Options used to compile the included SQLite shell.
#
set SHELL_OPTIONS {
  -Dmain=sqlite3_shell
  -DSQLITE_OMIT_LOAD_EXTENSION=1
  -Dsqlite3_strglob=strglob
}

# Options used to compile the included SQLite shell on Windows.
#
set SHELL_WIN32_OPTIONS $SHELL_OPTIONS
lappend SHELL_WIN32_OPTIONS -Dgetenv=fossil_getenv
lappend SHELL_WIN32_OPTIONS -Dfopen=fossil_fopen

# Name of the final application
#
set name fossil

# The "writeln" command sends output to the target makefile.
#
proc writeln {args} {

foreach s [lsort $src] {
  writeln -nonewline " \\\n \$(OBJDIR)/$s.o"
}
writeln "\n"
writeln "APPNAME = $name\$(E)"
writeln "\n"

writeln [string map [list \
    <<<SQLITE_OPTIONS>>> [join $SQLITE_OPTIONS " \\\n                 "] \
    <<<SHELL_OPTIONS>>> [join $SHELL_OPTIONS " \\\n                "]] {
all:	$(OBJDIR) $(APPNAME)

install:	$(APPNAME)
	mkdir -p $(INSTALLDIR)
	mv $(APPNAME) $(INSTALLDIR)

$(OBJDIR):

test:	$(OBJDIR) $(APPNAME)
	$(TCLSH) $(SRCDIR)/../test/tester.tcl $(APPNAME)

$(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 = <<<SQLITE_OPTIONS>>>

# Setup the options used to compile the included SQLite shell.
SHELL_OPTIONS = <<<SHELL_OPTIONS>>>

# The USE_SYSTEM_SQLITE variable may be undefined, set to 0, or set
# to 1. If it is set to 1, then there is no need to build or link
# the sqlite3.o object. Instead, the system sqlite will be linked
# using -lsqlite3.
SQLITE3_OBJ.1 = 
SQLITE3_OBJ.0 = $(OBJDIR)/sqlite3.o

#
$(SRCDIR)/../manifest:	
	# noop

clean:	
	rm -rf $(OBJDIR)/* $(APPNAME)

}]

set mhargs {}
foreach s [lsort $src] {
  append mhargs " \$(OBJDIR)/${s}_.c:\$(OBJDIR)/$s.h"
  set extra_h($s) {}
}
append mhargs " \$(SRCDIR)/sqlite3.h"

  writeln "\$(OBJDIR)/${s}_.c:\t\$(SRCDIR)/$s.c \$(OBJDIR)/translate"
  writeln "\t\$(OBJDIR)/translate \$(SRCDIR)/$s.c >\$(OBJDIR)/${s}_.c\n"
  writeln "\$(OBJDIR)/$s.o:\t\$(OBJDIR)/${s}_.c \$(OBJDIR)/$s.h $extra_h($s) \$(SRCDIR)/config.h"
  writeln "\t\$(XTCC) -o \$(OBJDIR)/$s.o -c \$(OBJDIR)/${s}_.c\n"
  writeln "\$(OBJDIR)/$s.h:\t\$(OBJDIR)/headers"
}


writeln "\$(OBJDIR)/sqlite3.o:\t\$(SRCDIR)/sqlite3.c"








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

writeln "\$(OBJDIR)/shell.o:\t\$(SRCDIR)/shell.c \$(SRCDIR)/sqlite3.h"



writeln "\t\$(XTCC) \$(SHELL_OPTIONS) \$(SHELL_CFLAGS) -c \$(SRCDIR)/shell.c -o \$(OBJDIR)/shell.o\n"

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

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

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


writeln {
$(OBJDIR)/cson_amalgamation.o: $(SRCDIR)/cson_amalgamation.c
	$(XTCC) -c $(SRCDIR)/cson_amalgamation.c -o $(OBJDIR)/cson_amalgamation.o

#
# The list of all the targets that do not correspond to real files. This stops
# 'make' from getting confused when someone makes an error in a rule.

writeln {
all:	$(OBJDIR) $(APPNAME)

$(OBJDIR)/fossil.o:	$(SRCDIR)/../win/fossil.rc $(OBJDIR)/VERSION.h
ifdef USE_WINDOWS
	$(CP) $(subst /,\,$(SRCDIR)\..\win\fossil.rc) $(subst /,\,$(OBJDIR))
	$(CP) $(subst /,\,$(SRCDIR)\..\win\fossil.ico) $(subst /,\,$(OBJDIR))
	$(CP) $(subst /,\,$(SRCDIR)\..\win\fossil.exe.manifest) $(subst /,\,$(OBJDIR))
else
	$(CP) $(SRCDIR)/../win/fossil.rc $(OBJDIR)
	$(CP) $(SRCDIR)/../win/fossil.ico $(OBJDIR)
	$(CP) $(SRCDIR)/../win/fossil.exe.manifest $(OBJDIR)
endif
	$(RCC) $(OBJDIR)/fossil.rc -o $(OBJDIR)/fossil.o

install:	$(OBJDIR) $(APPNAME)
ifdef USE_WINDOWS
	$(MKDIR) $(subst /,\,$(INSTALLDIR))
	$(MV) $(subst /,\,$(APPNAME)) $(subst /,\,$(INSTALLDIR))

  writeln "\$(OBJDIR)/${s}_.c:\t\$(SRCDIR)/$s.c \$(OBJDIR)/translate"
  writeln "\t\$(TRANSLATE) \$(SRCDIR)/$s.c >\$(OBJDIR)/${s}_.c\n"
  writeln "\$(OBJDIR)/$s.o:\t\$(OBJDIR)/${s}_.c \$(OBJDIR)/$s.h $extra_h($s) \$(SRCDIR)/config.h"
  writeln "\t\$(XTCC) -o \$(OBJDIR)/$s.o -c \$(OBJDIR)/${s}_.c\n"
  writeln "\$(OBJDIR)/${s}.h:\t\$(OBJDIR)/headers\n"
}

set MINGW_SQLITE_OPTIONS $SQLITE_OPTIONS
lappend MINGW_SQLITE_OPTIONS -D_HAVE_SQLITE_CONFIG_H
lappend MINGW_SQLITE_OPTIONS -DSQLITE_USE_MALLOC_H
lappend MINGW_SQLITE_OPTIONS -DSQLITE_USE_MSIZE

set j " \\\n                 "
writeln "SQLITE_OPTIONS = [join $MINGW_SQLITE_OPTIONS $j]\n"
set j " \\\n                "
writeln "SHELL_OPTIONS = [join $SHELL_WIN32_OPTIONS $j]\n"

writeln "\$(OBJDIR)/sqlite3.o:\t\$(SRCDIR)/sqlite3.c"


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


writeln "\$(OBJDIR)/cson_amalgamation.o:\t\$(SRCDIR)/cson_amalgamation.c"
writeln "\t\$(XTCC) -c \$(SRCDIR)/cson_amalgamation.c -o \$(OBJDIR)/cson_amalgamation.o\n"
writeln "\$(OBJDIR)/json.o \$(OBJDIR)/json_artifact.o \$(OBJDIR)/json_branch.o \$(OBJDIR)/json_config.o \$(OBJDIR)/json_diff.o \$(OBJDIR)/json_dir.o \$(OBJDIR)/jsos_finfo.o \$(OBJDIR)/json_login.o \$(OBJDIR)/json_query.o \$(OBJDIR)/json_report.o \$(OBJDIR)/json_status.o \$(OBJDIR)/json_tag.o \$(OBJDIR)/json_timeline.o \$(OBJDIR)/json_user.o \$(OBJDIR)/json_wiki.o : \$(SRCDIR)/json_detail.h\n"

writeln "\$(OBJDIR)/shell.o:\t\$(SRCDIR)/shell.c \$(SRCDIR)/sqlite3.h"





writeln "\t\$(XTCC) \$(SHELL_OPTIONS) \$(SHELL_CFLAGS) -c \$(SRCDIR)/shell.c -o \$(OBJDIR)/shell.o\n"

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

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

SSL    =

CFLAGS = -o
BCC    = $(DMDIR)\bin\dmc $(CFLAGS)
TCC    = $(DMDIR)\bin\dmc $(CFLAGS) $(DMCDEF) $(SSL) $(INCL)
LIBS   = $(DMDIR)\extra\lib\ zlib wsock32 advapi32
}
writeln "SQLITE_OPTIONS = [join $SQLITE_OPTIONS { }]\n"
writeln "SHELL_OPTIONS = [join $SHELL_WIN32_OPTIONS { }]\n"
writeln -nonewline "SRC   = "
foreach s [lsort $src] {
  writeln -nonewline "${s}_.c "
}
writeln "\n"
writeln -nonewline "OBJ   = "
foreach s [lsort $src] {

mkindex$E: $(SRCDIR)\mkindex.c
	$(BCC) -o$@ $**

version$E: $B\src\mkversion.c
	$(BCC) -o$@ $**

$(OBJDIR)\shell$O : $(SRCDIR)\shell.c
	$(TCC) -o$@ -c $(SHELL_OPTIONS) $(SQLITE_OPTIONS) $(SHELL_CFLAGS) $**

$(OBJDIR)\sqlite3$O : $(SRCDIR)\sqlite3.c
	$(TCC) -o$@ -c $(SQLITE_OPTIONS) $(SQLITE_CFLAGS) $**

$(OBJDIR)\th$O : $(SRCDIR)\th.c
	$(TCC) -o$@ -c $**

$(OBJDIR)\th_lang$O : $(SRCDIR)\th_lang.c
	$(TCC) -o$@ -c $**

!ifdef FOSSIL_ENABLE_SSL
TCC       = $(TCC) -DFOSSIL_ENABLE_SSL=1
RCC       = $(RCC) -DFOSSIL_ENABLE_SSL=1
LIBS      = $(LIBS) $(SSLLIB)
LIBDIR    = $(LIBDIR) -LIBPATH:$(SSLLIBDIR)
!endif
}
regsub -all {[-]D} [join $SQLITE_OPTIONS { }] {/D} MSC_SQLITE_OPTIONS
set j " \\\n                 "
writeln "SQLITE_OPTIONS = [join $MSC_SQLITE_OPTIONS $j]\n"

regsub -all {[-]D} [join $SHELL_WIN32_OPTIONS { }] {/D} MSC_SHELL_OPTIONS
set j " \\\n                "
writeln "SHELL_OPTIONS = [join $MSC_SHELL_OPTIONS $j]\n"

writeln -nonewline "SRC   = "
set i 0
foreach s [lsort $src] {
  if {$i > 0} {
    writeln " \\"
    writeln -nonewline "        "
  }

mkindex$E: $(SRCDIR)\mkindex.c
	$(BCC) $**

mkversion$E: $B\src\mkversion.c
	$(BCC) $**

$(OX)\shell$O : $(SRCDIR)\shell.c
	$(TCC) /Fo$@ $(SHELL_OPTIONS) $(SQLITE_OPTIONS) $(SHELL_CFLAGS) -c $(SRCDIR)\shell.c

$(OX)\sqlite3$O : $(SRCDIR)\sqlite3.c
	$(TCC) /Fo$@ -c $(SQLITE_OPTIONS) $(SQLITE_CFLAGS) $**

$(OX)\th$O : $(SRCDIR)\th.c
	$(TCC) /Fo$@ -c $**

$(OX)\th_lang$O : $(SRCDIR)\th_lang.c
	$(TCC) /Fo$@ -c $**

clean:
	-del $(OX)\*.obj
	-del *.obj
	-del *_.c
	-del *.h
	-del *.map

	-del headers
	-del linkopts
	-del *.res

realclean: clean
	-del $(APPNAME)
	-del translate$E

##############################################################################
# Begin win/Makefile.PellesCGMake output
#
puts "building ../win/Makefile.PellesCGMake"
set output_file [open ../win/Makefile.PellesCGMake w]
fconfigure $output_file -translation binary

writeln [string map [list \
    <<<SQLITE_OPTIONS>>> [join $SQLITE_OPTIONS { }] \
    <<<SHELL_OPTIONS>>> [join $SHELL_WIN32_OPTIONS { }]] {#
##############################################################################
# WARNING: DO NOT EDIT, AUTOMATICALLY GENERATED FILE (SEE "src/makemake.tcl")
##############################################################################
#
# This file is automatically generated.  Instead of editing this
# file, edit "makemake.tcl" then run "tclsh makemake.tcl"
# to regenerate this file.

UTILS_OBJ=$(UTILS:.exe=.obj)
UTILS_SRC=$(foreach uf,$(UTILS),$(SRCDIR)$(uf:.exe=.c))

# define the sqlite files, which need special flags on compile
SQLITESRC=sqlite3.c
ORIGSQLITESRC=$(foreach sf,$(SQLITESRC),$(SRCDIR)$(sf))
SQLITEOBJ=$(foreach sf,$(SQLITESRC),$(sf:.c=.obj))
SQLITEDEFINES=<<<SQLITE_OPTIONS>>>

# define the sqlite shell files, which need special flags on compile
SQLITESHELLSRC=shell.c
ORIGSQLITESHELLSRC=$(foreach sf,$(SQLITESHELLSRC),$(SRCDIR)$(sf))
SQLITESHELLOBJ=$(foreach sf,$(SQLITESHELLSRC),$(sf:.c=.obj))
SQLITESHELLDEFINES=<<<SHELL_OPTIONS>>>

# define the th scripting files, which need special flags on compile
THSRC=th.c th_lang.c
ORIGTHSRC=$(foreach sf,$(THSRC),$(SRCDIR)$(sf))
THOBJ=$(foreach sf,$(THSRC),$(sf:.c=.obj))

# define the zlib files, needed by this compile

	del /F $(TRANSLATEDSRC)
	del /F *.h headers
	del /F $(RESOURCE)

.PHONY: clobber
clobber: clean
	del /F *.exe
}]

}

/*
 * Start MD5 accumulation.  Set bit count to 0 and buffer to mysterious
 * initialization constants.
 */
static void MD5Init(MD5Context *ctx){
        ctx->isInit = 1;
        ctx->buf[0] = 0x67452301;
        ctx->buf[1] = 0xefcdab89;
        ctx->buf[2] = 0x98badcfe;
        ctx->buf[3] = 0x10325476;
        ctx->bits[0] = 0;
        ctx->bits[1] = 0;
}

** Predefined tagid values
*/
#if INTERFACE
# define TAG_BGCOLOR    1     /* Set the background color for display */
# define TAG_COMMENT    2     /* The check-in comment */
# define TAG_USER       3     /* User who made a checking */
# define TAG_DATE       4     /* The date of a check-in */
# define TAG_HIDDEN     5     /* Do not display in timeline */
# define TAG_PRIVATE    6     /* Do not sync */
# define TAG_CLUSTER    7     /* A cluster */
# define TAG_BRANCH     8     /* Value is name of the current branch */
# define TAG_CLOSED     9     /* Do not display this check-in as a leaf */
# define TAG_PARENT     10    /* Change to parentage on a checkin */
#endif
#if EXPORT_INTERFACE
# define MAX_INT_TAG    16    /* The largest pre-assigned tag id */

  @ in a separate box (using CSS class "timelineDate") whenever the date changes.
  @ With the "YYYY-MM-DD HH:MM" and "YYMMDD ..." formats, the complete date
  @ and time is shown on every timeline entry (using the CSS class "timelineTime").</p>

  @ <hr />
  onoff_attribute("Show version differences by default",
                  "show-version-diffs", "vdiff", 0, 0);
  @ <p>The version-information pages linked from the timeline can either
  @ show complete diffs of all file changes, or can just list the names of
  @ the files that have changed.  Users can get to either page by
  @ clicking.  This setting selects the default.</p>

  @ <hr />
  entry_attribute("Max timeline comment length", 6,
                  "timeline-max-comment", "tmc", "0", 0);

  const unsigned char *data,
  unsigned int len
){
    unsigned int i, j;

    j = context->count[0];
    if ((context->count[0] += len << 3) < j)
        context->count[1] += (len>>29)+1;
    j = (j >> 3) & 63;
    if ((j + len) > 63) {
        (void)memcpy(&context->buffer[j], data, (i = 64-j));
        SHA1Transform(context->state, context->buffer);
        for ( ; i + 63 < len; i += 64)
            SHA1Transform(context->state, &data[i]);
        j = 0;
    } else {
        i = 0;
    }
    (void)memcpy(&context->buffer[j], &data[i], len - i);
}


/*
 * Add padding and return the message digest.
 */
static void SHA1Final(SHA1Context *context, unsigned char digest[20]){
    unsigned int i;
    unsigned char finalcount[8];

    for (i = 0; i < 8; i++) {
        finalcount[i] = (unsigned char)((context->count[(i >= 4 ? 0 : 1)]
         >> ((3-(i & 3)) * 8) ) & 255); /* Endian independent */
    }
    SHA1Update(context, (const unsigned char *)"\200", 1);
    while ((context->count[0] & 504) != 448)
        SHA1Update(context, (const unsigned char *)"\0", 1);
    SHA1Update(context, finalcount, 8);  /* Should cause a SHA1Transform() */

    if (digest) {
        for (i = 0; i < 20; i++)
            digest[i] = (unsigned char)
                ((context->state[i>>2] >> ((3-(i & 3)) * 8) ) & 255);
    }
}


/*
** Convert a digest into base-16.  digest should be declared as
** "unsigned char digest[20]" in the calling function.  The SHA1

                         ** .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 */
  int nIndent;           /* Size of array aiIndent[] */
  int iIndent;           /* Index of current op in aiIndent[] */
};

/*
** These are the allowed modes.
*/
#define MODE_Line     0  /* One column per line.  Blank line between records */
#define MODE_Column   1  /* One record per line in neat columns */

      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 ){

          w = strlen30(azArg[i]);
        }
        if( i==1 && p->aiIndent && p->pStmt ){
          if( p->iIndent<p->nIndent ){
            fprintf(p->out, "%*.s", p->aiIndent[p->iIndent], "");
          }
          p->iIndent++;
        }
        if( w<0 ){
          fprintf(p->out,"%*.*s%s",-w,-w,
              azArg[i] ? azArg[i] : p->nullvalue, i==nArg-1 ? "\n": "  ");
        }else{
          fprintf(p->out,"%-*.*s%s",w,w,
              azArg[i] ? azArg[i] : p->nullvalue, i==nArg-1 ? "\n": "  ");

    fprintf(pArg->out, "Autoindex Inserts:                   %d\n", iCur);
    iCur = sqlite3_stmt_status(pArg->pStmt, SQLITE_STMTSTATUS_VM_STEP, bReset);
    fprintf(pArg->out, "Virtual Machine Steps:               %d\n", iCur);
  }

  return 0;
}

/*
** Parameter azArray points to a zero-terminated array of strings. zStr
** points to a single nul-terminated string. Return non-zero if zStr
** is equal, according to strcmp(), to any of the strings in the array.
** Otherwise, return zero.
*/
static int str_in_array(const char *zStr, const char **azArray){
  int i;
  for(i=0; azArray[i]; i++){
    if( 0==strcmp(zStr, azArray[i]) ) return 1;
  }
  return 0;
}

/*
** If compiled statement pSql appears to be an EXPLAIN statement, allocate
** and populate the callback_data.aiIndent[] array with the number of
** spaces each opcode should be indented before it is output. 
**
** The indenting rules are:
**
**     * For each "Next", "Prev", "VNext" or "VPrev" instruction, indent
**       all opcodes that occur between the p2 jump destination and the opcode
**       itself by 2 spaces.
**
**     * For each "Goto", if the jump destination is earlier in the program
**       and ends on one of:
**          Yield  SeekGt  SeekLt  RowSetRead
**       then indent all opcodes between the earlier instruction
**       and "Goto" by 2 spaces.
*/
static void explain_data_prepare(struct callback_data *p, sqlite3_stmt *pSql){
  const char *zSql;               /* The text of the SQL statement */
  const char *z;                  /* Used to check if this is an EXPLAIN */
  int *abYield = 0;               /* True if op is an OP_Yield */
  int nAlloc = 0;                 /* Allocated size of p->aiIndent[], abYield */
  int iOp;                        /* Index of operation in p->aiIndent[] */

  const char *azNext[] = { "Next", "Prev", "VPrev", "VNext", "SorterNext", 0 };
  const char *azYield[] = { "Yield", "SeekLt", "SeekGt", "RowSetRead", 0 };
  const char *azGoto[] = { "Goto", 0 };

  /* Try to figure out if this is really an EXPLAIN statement. If this
  ** cannot be verified, return early.  */
  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;

  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 ){
      nAlloc += 100;
      p->aiIndent = (int*)sqlite3_realloc(p->aiIndent, nAlloc*sizeof(int));
      abYield = (int*)sqlite3_realloc(abYield, nAlloc*sizeof(int));
    }
    abYield[iOp] = str_in_array(zOp, azYield);
    p->aiIndent[iOp] = 0;
    p->nIndent = iOp+1;

    if( str_in_array(zOp, azNext) ){
      for(i=p2op; i<iOp; i++) p->aiIndent[i] += 2;
    }
    if( str_in_array(zOp, azGoto) && p2op<p->nIndent && abYield[p2op] ){
      for(i=p2op; i<iOp; i++) p->aiIndent[i] += 2;
    }
  }

  p->iIndent = 0;
  sqlite3_free(abYield);
  sqlite3_reset(pSql);
}

/*
** Free the array allocated by explain_data_prepare().
*/
static void explain_data_delete(struct callback_data *p){
  sqlite3_free(p->aiIndent);
  p->aiIndent = 0;
  p->nIndent = 0;
  p->iIndent = 0;
}

/*
** Execute a statement or set of statements.  Print 
** any result rows/columns depending on the current mode 
** set via the supplied callback.
**
** This is very similar to SQLite's built-in sqlite3_exec() 

      if( pArg && pArg->mode==MODE_Explain ){
        const char *zExplain = 0;
        sqlite3_test_control(SQLITE_TESTCTRL_EXPLAIN_STMT, pStmt, &zExplain);
        if( zExplain && zExplain[0] ){
          fprintf(pArg->out, "%s", zExplain);
        }
      }

      /* 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);
      }

      /* 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... */
      if( SQLITE_ROW == rc ){

          }
        }else{
          do{
            rc = sqlite3_step(pStmt);
          } while( rc == SQLITE_ROW );
        }
      }

      explain_data_delete(pArg);

      /* print usage stats if stats on */
      if( pArg && pArg->statsOn ){
        display_stats(db, pArg, 0);
      }

      /* Finalize the statement just executed. If this fails, save a 

      ** 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.
      */
      p->mode = MODE_Explain;
      p->showHeader = 1;
      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 */

@ div.content {
@   padding: 0ex 0ex 0ex 0ex;
@ }
@ /* Hyperlink colors */
@ div.content a { color: #604000; }
@ div.content a:link { color: #604000;}
@ div.content a:visited { color: #600000; }
@
@ /* <verbatim> blocks */
@ pre.verbatim {
@   background-color: #ffffff;
@   padding: 0.5em;
@   white-space: pre-wrap;
@ }
@
@ /* Some pages have section dividers */
@ div.section {
@   margin-bottom: 0px;
@   margin-top: 1em;
@   padding: 1px 1px 1px 1px;
@   font-size: 1.2em;

  sqlite3_create_function(db, "decompress", 1, SQLITE_ANY, 0,
                          sqlcmd_decompress, 0, 0);
  re_add_sql_func(db);
  g.repositoryOpen = 1;
  g.db = db;
  return SQLITE_OK;
}


/*
** COMMAND: sqlite3
**
** Usage: %fossil sqlite3 ?DATABASE? ?OPTIONS?
**
** Run the standalone sqlite3 command-line shell on DATABASE with OPTIONS.

/******************************************************************************
** This file is an amalgamation of many separate C source files from SQLite
** version 3.8.3.  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

** 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        "3.8.3"
#define SQLITE_VERSION_NUMBER 3008003
#define SQLITE_SOURCE_ID      "2013-12-11 12:02:55 3e1d55f0bd84810a035bd6c54583eb373784a9a3"

/*
** 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

** is not changed.
**
** Restrictions:
**
** <ul>
** <li> The application must insure that the 1st parameter to sqlite3_exec()
**      is a valid and open [database connection].
** <li> The application must not close the [database connection] specified by
**      the 1st parameter to sqlite3_exec() while sqlite3_exec() is running.
** <li> The application must not modify the SQL statement text passed into
**      the 2nd parameter of sqlite3_exec() while sqlite3_exec() is running.
** </ul>
*/
SQLITE_API int sqlite3_exec(
  sqlite3*,                                  /* An open database */

** address this, newer versions of SQLite (version 3.3.8 and later) include
** support for additional result codes that provide more detailed information
** about errors. The extended result codes are enabled or disabled
** on a per database connection basis using the
** [sqlite3_extended_result_codes()] API.
**
** Some of the available extended result codes are listed here.
** One may expect the number of extended result codes will increase
** over time.  Software that uses extended result codes should expect
** to see new result codes in future releases of SQLite.
**
** The SQLITE_OK result code will never be extended.  It will always
** be exactly zero.
*/
#define SQLITE_IOERR_READ              (SQLITE_IOERR | (1<<8))

#define SQLITE_CANTOPEN_ISDIR          (SQLITE_CANTOPEN | (2<<8))
#define SQLITE_CANTOPEN_FULLPATH       (SQLITE_CANTOPEN | (3<<8))
#define SQLITE_CANTOPEN_CONVPATH       (SQLITE_CANTOPEN | (4<<8))
#define SQLITE_CORRUPT_VTAB            (SQLITE_CORRUPT | (1<<8))
#define SQLITE_READONLY_RECOVERY       (SQLITE_READONLY | (1<<8))
#define SQLITE_READONLY_CANTLOCK       (SQLITE_READONLY | (2<<8))
#define SQLITE_READONLY_ROLLBACK       (SQLITE_READONLY | (3<<8))
#define SQLITE_READONLY_DBMOVED        (SQLITE_READONLY | (4<<8))
#define SQLITE_ABORT_ROLLBACK          (SQLITE_ABORT | (2<<8))
#define SQLITE_CONSTRAINT_CHECK        (SQLITE_CONSTRAINT | (1<<8))
#define SQLITE_CONSTRAINT_COMMITHOOK   (SQLITE_CONSTRAINT | (2<<8))
#define SQLITE_CONSTRAINT_FOREIGNKEY   (SQLITE_CONSTRAINT | (3<<8))
#define SQLITE_CONSTRAINT_FUNCTION     (SQLITE_CONSTRAINT | (4<<8))
#define SQLITE_CONSTRAINT_NOTNULL      (SQLITE_CONSTRAINT | (5<<8))
#define SQLITE_CONSTRAINT_PRIMARYKEY   (SQLITE_CONSTRAINT | (6<<8))

** first then the size of the file is extended, never the other
** way around.  The SQLITE_IOCAP_SEQUENTIAL property means that
** information is written to disk in the same order as calls
** to xWrite().  The SQLITE_IOCAP_POWERSAFE_OVERWRITE property means that
** after reboot following a crash or power loss, the only bytes in a
** file that were written at the application level might have changed
** and that adjacent bytes, even bytes within the same sector are
** guaranteed to be unchanged.  The SQLITE_IOCAP_UNDELETABLE_WHEN_OPEN
** flag indicate that a file cannot be deleted when open.
*/
#define SQLITE_IOCAP_ATOMIC                 0x00000001
#define SQLITE_IOCAP_ATOMIC512              0x00000002
#define SQLITE_IOCAP_ATOMIC1K               0x00000004
#define SQLITE_IOCAP_ATOMIC2K               0x00000008
#define SQLITE_IOCAP_ATOMIC4K               0x00000010
#define SQLITE_IOCAP_ATOMIC8K               0x00000020

** The [SQLITE_FCNTL_TRACE] file control provides advisory information
** to the VFS about what the higher layers of the SQLite stack are doing.
** This file control is used by some VFS activity tracing [shims].
** The argument is a zero-terminated string.  Higher layers in the
** SQLite stack may generate instances of this file control if
** the [SQLITE_USE_FCNTL_TRACE] compile-time option is enabled.
**
** <li>[[SQLITE_FCNTL_HAS_MOVED]]
** The [SQLITE_FCNTL_HAS_MOVED] file control interprets its argument as a
** pointer to an integer and it writes a boolean into that integer depending
** on whether or not the file has been renamed, moved, or deleted since it
** was first opened.
**
** </ul>
*/
#define SQLITE_FCNTL_LOCKSTATE               1
#define SQLITE_GET_LOCKPROXYFILE             2
#define SQLITE_SET_LOCKPROXYFILE             3
#define SQLITE_LAST_ERRNO                    4
#define SQLITE_FCNTL_SIZE_HINT               5
#define SQLITE_FCNTL_CHUNK_SIZE              6
#define SQLITE_FCNTL_FILE_POINTER            7
#define SQLITE_FCNTL_SYNC_OMITTED            8
#define SQLITE_FCNTL_WIN32_AV_RETRY          9
#define SQLITE_FCNTL_PERSIST_WAL            10
#define SQLITE_FCNTL_OVERWRITE              11
#define SQLITE_FCNTL_VFSNAME                12
#define SQLITE_FCNTL_POWERSAFE_OVERWRITE    13
#define SQLITE_FCNTL_PRAGMA                 14
#define SQLITE_FCNTL_BUSYHANDLER            15
#define SQLITE_FCNTL_TEMPFILENAME           16
#define SQLITE_FCNTL_MMAP_SIZE              18
#define SQLITE_FCNTL_TRACE                  19
#define SQLITE_FCNTL_HAS_MOVED              20

/*
** CAPI3REF: Mutex Handle
**
** The mutex module within SQLite defines [sqlite3_mutex] to be an
** abstract type for a mutex object.  The SQLite core never looks
** at the internal representation of an [sqlite3_mutex].  It only

** a memory allocation given a particular requested size.  Most memory
** allocators round up memory allocations at least to the next multiple
** of 8.  Some allocators round up to a larger multiple or to a power of 2.
** Every memory allocation request coming in through [sqlite3_malloc()]
** or [sqlite3_realloc()] first calls xRoundup.  If xRoundup returns 0, 
** that causes the corresponding memory allocation to fail.
**
** The xInit method initializes the memory allocator.  For example,
** it might allocate any require mutexes or initialize internal data
** structures.  The xShutdown method is invoked (indirectly) by
** [sqlite3_shutdown()] and should deallocate any resources acquired
** by xInit.  The pAppData pointer is used as the only parameter to
** xInit and xShutdown.
**
** SQLite holds the [SQLITE_MUTEX_STATIC_MASTER] mutex when it invokes

** either the [PRAGMA mmap_size] command, or by using the
** [SQLITE_FCNTL_MMAP_SIZE] file control.  ^(The maximum allowed mmap size
** cannot be changed at run-time.  Nor may the maximum allowed mmap size
** exceed the compile-time maximum mmap size set by the
** [SQLITE_MAX_MMAP_SIZE] compile-time option.)^
** ^If either argument to this option is negative, then that argument is
** changed to its compile-time default.
**
** [[SQLITE_CONFIG_WIN32_HEAPSIZE]]
** <dt>SQLITE_CONFIG_WIN32_HEAPSIZE
** <dd>^This option is only available if SQLite is compiled for Windows
** with the [SQLITE_WIN32_MALLOC] pre-processor macro defined.
** SQLITE_CONFIG_WIN32_HEAPSIZE takes a 32-bit unsigned integer value
** that specifies the maximum size of the created heap.
** </dl>
*/
#define SQLITE_CONFIG_SINGLETHREAD  1  /* nil */
#define SQLITE_CONFIG_MULTITHREAD   2  /* nil */
#define SQLITE_CONFIG_SERIALIZED    3  /* nil */
#define SQLITE_CONFIG_MALLOC        4  /* sqlite3_mem_methods* */
#define SQLITE_CONFIG_GETMALLOC     5  /* sqlite3_mem_methods* */

#define SQLITE_CONFIG_LOG          16  /* xFunc, void* */
#define SQLITE_CONFIG_URI          17  /* int */
#define SQLITE_CONFIG_PCACHE2      18  /* sqlite3_pcache_methods2* */
#define SQLITE_CONFIG_GETPCACHE2   19  /* sqlite3_pcache_methods2* */
#define SQLITE_CONFIG_COVERING_INDEX_SCAN 20  /* int */
#define SQLITE_CONFIG_SQLLOG       21  /* xSqllog, void* */
#define SQLITE_CONFIG_MMAP_SIZE    22  /* sqlite3_int64, sqlite3_int64 */
#define SQLITE_CONFIG_WIN32_HEAPSIZE      23  /* int nByte */

/*
** CAPI3REF: Database Connection Configuration Options
**
** These constants are the available integer configuration options that
** can be passed as the second argument to the [sqlite3_db_config()] interface.
**

** then the statement will be automatically recompiled, as if there had been 
** a schema change, on the first  [sqlite3_step()] call following any change
** to the [sqlite3_bind_text | bindings] of that [parameter]. 
** ^The specific value of WHERE-clause [parameter] might influence the 
** choice of query plan if the parameter is the left-hand side of a [LIKE]
** or [GLOB] operator or if the parameter is compared to an indexed column
** and the [SQLITE_ENABLE_STAT3] compile-time option is enabled.

** </li>
** </ol>
*/
SQLITE_API int sqlite3_prepare(
  sqlite3 *db,            /* Database handle */
  const char *zSql,       /* SQL statement, UTF-8 encoded */
  int nByte,              /* Maximum length of zSql in bytes. */

**
** <blockquote>
** <table border="1">
** <tr><th> Internal<br>Type <th> Requested<br>Type <th>  Conversion
**
** <tr><td>  NULL    <td> INTEGER   <td> Result is 0
** <tr><td>  NULL    <td>  FLOAT    <td> Result is 0.0
** <tr><td>  NULL    <td>   TEXT    <td> Result is a NULL pointer
** <tr><td>  NULL    <td>   BLOB    <td> Result is a NULL pointer
** <tr><td> INTEGER  <td>  FLOAT    <td> Convert from integer to float
** <tr><td> INTEGER  <td>   TEXT    <td> ASCII rendering of the integer
** <tr><td> INTEGER  <td>   BLOB    <td> Same as INTEGER->TEXT
** <tr><td>  FLOAT   <td> INTEGER   <td> [CAST] to INTEGER
** <tr><td>  FLOAT   <td>   TEXT    <td> ASCII rendering of the float
** <tr><td>  FLOAT   <td>   BLOB    <td> [CAST] to BLOB
** <tr><td>  TEXT    <td> INTEGER   <td> [CAST] to INTEGER
** <tr><td>  TEXT    <td>  FLOAT    <td> [CAST] to REAL
** <tr><td>  TEXT    <td>   BLOB    <td> No change
** <tr><td>  BLOB    <td> INTEGER   <td> [CAST] to INTEGER
** <tr><td>  BLOB    <td>  FLOAT    <td> [CAST] to REAL
** <tr><td>  BLOB    <td>   TEXT    <td> Add a zero terminator if needed
** </table>
** </blockquote>)^
**
** The table above makes reference to standard C library functions atoi()
** and atof().  SQLite does not really use these functions.  It has its
** own equivalent internal routines.  The atoi() and atof() names are

** sqlite3_column_bytes16(), and do not mix calls to sqlite3_column_text16()
** with calls to sqlite3_column_bytes().
**
** ^The pointers returned are valid until a type conversion occurs as
** described above, or until [sqlite3_step()] or [sqlite3_reset()] or
** [sqlite3_finalize()] is called.  ^The memory space used to hold strings
** and BLOBs is freed automatically.  Do <b>not</b> pass the pointers returned
** from [sqlite3_column_blob()], [sqlite3_column_text()], etc. into
** [sqlite3_free()].
**
** ^(If a memory allocation error occurs during the evaluation of any
** of these routines, a default value is returned.  The default value
** is either the integer 0, the floating point number 0.0, or a NULL
** pointer.  Subsequent calls to [sqlite3_errcode()] will return
** [SQLITE_NOMEM].)^

SQLITE_API int sqlite3_release_memory(int);

/*
** CAPI3REF: Free Memory Used By A Database Connection
**
** ^The sqlite3_db_release_memory(D) interface attempts to free as much heap
** memory as possible from database connection D. Unlike the
** [sqlite3_release_memory()] interface, this interface is in effect even
** when the [SQLITE_ENABLE_MEMORY_MANAGEMENT] compile-time option is
** omitted.
**
** See also: [sqlite3_release_memory()]
*/
SQLITE_API int sqlite3_db_release_memory(sqlite3*);

/*

** ^[sqlite3_free()] is used to free idxPtr if and only if
** needToFreeIdxPtr is true.
**
** ^The orderByConsumed means that output from [xFilter]/[xNext] will occur in
** the correct order to satisfy the ORDER BY clause so that no separate
** sorting step is required.
**
** ^The estimatedCost value is an estimate of the cost of a particular
** strategy. A cost of N indicates that the cost of the strategy is similar
** to a linear scan of an SQLite table with N rows. A cost of log(N) 
** indicates that the expense of the operation is similar to that of a
** binary search on a unique indexed field of an SQLite table with N rows.
**
** ^The estimatedRows value is an estimate of the number of rows that
** will be returned by the strategy.
**
** IMPORTANT: The estimatedRows field was added to the sqlite3_index_info
** structure for SQLite version 3.8.2. If a virtual table extension is
** used with an SQLite version earlier than 3.8.2, the results of attempting 
** to read or write the estimatedRows field are undefined (but are likely 
** to included crashing the application). The estimatedRows field should
** therefore only be used if [sqlite3_libversion_number()] returns a
** value greater than or equal to 3008002.
*/
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 */
     unsigned char op;         /* Constraint operator */

    int argvIndex;           /* if >0, constraint is part of argv to xFilter */
    unsigned char omit;      /* Do not code a test for this constraint */
  } *aConstraintUsage;
  int idxNum;                /* Number used to identify the index */
  char *idxStr;              /* String, possibly obtained from sqlite3_malloc */
  int needToFreeIdxStr;      /* Free idxStr using sqlite3_free() if true */
  int orderByConsumed;       /* True if output is already ordered */
  double estimatedCost;           /* Estimated cost of using this index */
  /* Fields below are only available in SQLite 3.8.2 and later */
  sqlite3_int64 estimatedRows;    /* Estimated number of rows returned */
};

/*
** CAPI3REF: Virtual Table Constraint Operator Codes
**
** These macros defined the allowed values for the
** [sqlite3_index_info].aConstraint[].op field.  Each value represents

#define SQLITE_TESTCTRL_ALWAYS                  13
#define SQLITE_TESTCTRL_RESERVE                 14
#define SQLITE_TESTCTRL_OPTIMIZATIONS           15
#define SQLITE_TESTCTRL_ISKEYWORD               16
#define SQLITE_TESTCTRL_SCRATCHMALLOC           17
#define SQLITE_TESTCTRL_LOCALTIME_FAULT         18
#define SQLITE_TESTCTRL_EXPLAIN_STMT            19
#define SQLITE_TESTCTRL_NEVER_CORRUPT           20
#define SQLITE_TESTCTRL_LAST                    20

/*
** CAPI3REF: SQLite Runtime Status
**
** ^This interface is used to retrieve runtime status information
** about the performance of SQLite, and optionally to reset various
** highwater marks.  ^The first argument is an integer code for

#define TK_ILLEGAL                        149
#define TK_SPACE                          150
#define TK_UNCLOSED_STRING                151
#define TK_FUNCTION                       152
#define TK_COLUMN                         153
#define TK_AGG_FUNCTION                   154
#define TK_AGG_COLUMN                     155

#define TK_UMINUS                         156
#define TK_UPLUS                          157

/************** End of parse.h ***********************************************/
/************** Continuing where we left off in sqliteInt.h ******************/
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <assert.h>

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*);
SQLITE_PRIVATE int sqlite3BtreePrevious(BtCursor*, int *pRes);
SQLITE_PRIVATE int sqlite3BtreeKeySize(BtCursor*, i64 *pSize);
SQLITE_PRIVATE int sqlite3BtreeKey(BtCursor*, u32 offset, u32 amt, void*);
SQLITE_PRIVATE const void *sqlite3BtreeKeyFetch(BtCursor*, u32 *pAmt);
SQLITE_PRIVATE const void *sqlite3BtreeDataFetch(BtCursor*, u32 *pAmt);
SQLITE_PRIVATE int sqlite3BtreeDataSize(BtCursor*, u32 *pSize);
SQLITE_PRIVATE int sqlite3BtreeData(BtCursor*, u32 offset, u32 amt, void*);
SQLITE_PRIVATE void sqlite3BtreeSetCachedRowid(BtCursor*, sqlite3_int64);
SQLITE_PRIVATE sqlite3_int64 sqlite3BtreeGetCachedRowid(BtCursor*);

SQLITE_PRIVATE char *sqlite3BtreeIntegrityCheck(Btree*, int *aRoot, int nRoot, int, int*);
SQLITE_PRIVATE struct Pager *sqlite3BtreePager(Btree*);

/* Automatically generated.  Do not edit */
/* See the mkopcodeh.awk script for details */
#define OP_Function        1 /* synopsis: r[P3]=func(r[P2@P5])             */
#define OP_Savepoint       2
#define OP_AutoCommit      3
#define OP_Transaction     4
#define OP_SorterNext      5
#define OP_PrevIfOpen      6
#define OP_NextIfOpen      7
#define OP_Prev            8
#define OP_Next            9
#define OP_AggStep        10 /* synopsis: accum=r[P3] step(r[P2@P5])       */
#define OP_Checkpoint     11
#define OP_JournalMode    12
#define OP_Vacuum         13
#define OP_VFilter        14 /* synopsis: iPlan=r[P3] zPlan='P4'           */
#define OP_VUpdate        15 /* synopsis: data=r[P3@P2]                    */
#define OP_Goto           16
#define OP_Gosub          17
#define OP_Return         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 then 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_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]=r[P1@P3]                */
#define OP_SCopy          31 /* synopsis: r[P2]=r[P1]                      */
#define OP_ResultRow      32 /* synopsis: output=r[P1@P2]                  */
#define OP_CollSeq        33
#define OP_AddImm         34 /* synopsis: r[P1]=r[P1]+P2                   */
#define OP_MustBeInt      35
#define OP_RealAffinity   36
#define OP_Permutation    37
#define OP_Compare        38
#define OP_Jump           39
#define OP_Once           40
#define OP_If             41
#define OP_IfNot          42
#define OP_Column         43 /* synopsis: r[P3]=PX                         */
#define OP_Affinity       44 /* synopsis: affinity(r[P1@P2])               */
#define OP_MakeRecord     45 /* synopsis: r[P3]=mkrec(r[P1@P2])            */
#define OP_Count          46 /* synopsis: r[P2]=count()                    */
#define OP_ReadCookie     47
#define OP_SetCookie      48
#define OP_VerifyCookie   49
#define OP_OpenRead       50 /* synopsis: root=P2 iDb=P3                   */
#define OP_OpenWrite      51 /* synopsis: root=P2 iDb=P3                   */
#define OP_OpenAutoindex  52 /* synopsis: nColumn=P2                       */
#define OP_OpenEphemeral  53 /* synopsis: nColumn=P2                       */
#define OP_SorterOpen     54
#define OP_OpenPseudo     55 /* synopsis: content in r[P2@P3]              */
#define OP_Close          56
#define OP_SeekLt         57 /* synopsis: key=r[P3@P4]                     */
#define OP_SeekLe         58 /* synopsis: key=r[P3@P4]                     */
#define OP_SeekGe         59 /* synopsis: key=r[P3@P4]                     */
#define OP_SeekGt         60 /* synopsis: key=r[P3@P4]                     */
#define OP_Seek           61 /* synopsis: intkey=r[P2]                     */
#define OP_NoConflict     62 /* synopsis: key=r[P3@P4]                     */
#define OP_NotFound       63 /* synopsis: key=r[P3@P4]                     */
#define OP_Found          64 /* synopsis: key=r[P3@P4]                     */
#define OP_NotExists      65 /* synopsis: intkey=r[P3]                     */
#define OP_Sequence       66 /* synopsis: r[P2]=rowid                      */
#define OP_NewRowid       67 /* synopsis: r[P2]=rowid                      */
#define OP_Insert         68 /* synopsis: intkey=r[P3] data=r[P2]          */


#define OP_Or             69 /* same as TK_OR, synopsis: r[P3]=(r[P1] || r[P2]) */
#define OP_And            70 /* same as TK_AND, synopsis: r[P3]=(r[P1] && r[P2]) */
#define OP_InsertInt      71 /* synopsis: intkey=P3 data=r[P2]             */
#define OP_Delete         72
#define OP_ResetCount     73


#define OP_IsNull         74 /* same as TK_ISNULL, synopsis: if r[P1]==NULL goto P2 */
#define OP_NotNull        75 /* same as TK_NOTNULL, synopsis: if r[P1]!=NULL goto P2 */
#define OP_Ne             76 /* same as TK_NE, synopsis: if r[P1]!=r[P3] goto P2 */
#define OP_Eq             77 /* same as TK_EQ, synopsis: if r[P1]==r[P3] goto P2 */
#define OP_Gt             78 /* same as TK_GT, synopsis: if r[P1]>r[P3] goto P2 */
#define OP_Le             79 /* same as TK_LE, synopsis: if r[P1]<=r[P3] goto P2 */
#define OP_Lt             80 /* same as TK_LT, synopsis: if r[P1]<r[P3] goto P2 */
#define OP_Ge             81 /* same as TK_GE, synopsis: if r[P1]>=r[P3] goto P2 */
#define OP_SorterCompare  82 /* synopsis: if key(P1)!=rtrim(r[P3],P4) goto P2 */
#define OP_BitAnd         83 /* same as TK_BITAND, synopsis: r[P3]=r[P1]&r[P2] */
#define OP_BitOr          84 /* same as TK_BITOR, synopsis: r[P3]=r[P1]|r[P2] */
#define OP_ShiftLeft      85 /* same as TK_LSHIFT, synopsis: r[P3]=r[P2]<<r[P1] */
#define OP_ShiftRight     86 /* same as TK_RSHIFT, synopsis: r[P3]=r[P2]>>r[P1] */
#define OP_Add            87 /* same as TK_PLUS, synopsis: r[P3]=r[P1]+r[P2] */
#define OP_Subtract       88 /* same as TK_MINUS, synopsis: r[P3]=r[P2]-r[P1] */
#define OP_Multiply       89 /* same as TK_STAR, synopsis: r[P3]=r[P1]*r[P2] */
#define OP_Divide         90 /* same as TK_SLASH, synopsis: r[P3]=r[P2]/r[P1] */
#define OP_Remainder      91 /* same as TK_REM, synopsis: r[P3]=r[P2]%r[P1] */
#define OP_Concat         92 /* same as TK_CONCAT, synopsis: r[P3]=r[P2]+r[P1] */
#define OP_SorterData     93 /* synopsis: r[P2]=data                       */
#define OP_BitNot         94 /* same as TK_BITNOT, synopsis: r[P1]= ~r[P1] */
#define OP_String8        95 /* same as TK_STRING, synopsis: r[P2]='P4'    */
#define OP_RowKey         96 /* synopsis: r[P2]=key                        */
#define OP_RowData        97 /* synopsis: r[P2]=data                       */
#define OP_Rowid          98 /* synopsis: r[P2]=rowid                      */
#define OP_NullRow        99
#define OP_Last          100
#define OP_SorterSort    101
#define OP_Sort          102
#define OP_Rewind        103
#define OP_SorterInsert  104
#define OP_IdxInsert     105 /* synopsis: key=r[P2]                        */
#define OP_IdxDelete     106 /* synopsis: key=r[P2@P3]                     */
#define OP_IdxRowid      107 /* synopsis: r[P2]=rowid                      */
#define OP_IdxLT         108 /* synopsis: key=r[P3@P4]                     */
#define OP_IdxGE         109 /* synopsis: key=r[P3@P4]                     */
#define OP_Destroy       110
#define OP_Clear         111
#define OP_CreateIndex   112 /* synopsis: r[P2]=root iDb=P1                */
#define OP_CreateTable   113 /* synopsis: r[P2]=root iDb=P1                */
#define OP_ParseSchema   114
#define OP_LoadAnalysis  115
#define OP_DropTable     116
#define OP_DropIndex     117
#define OP_DropTrigger   118
#define OP_IntegrityCk   119
#define OP_RowSetAdd     120 /* synopsis: rowset(P1)=r[P2]                 */
#define OP_RowSetRead    121 /* synopsis: r[P3]=rowset(P1)                 */
#define OP_RowSetTest    122 /* synopsis: if r[P3] in rowset(P1) goto P2   */
#define OP_Program       123
#define OP_Param         124
#define OP_FkCounter     125 /* synopsis: fkctr[P1]+=P2                    */
#define OP_FkIfZero      126 /* synopsis: if fkctr[P1]==0 goto P2          */
#define OP_MemMax        127 /* synopsis: r[P1]=max(r[P1],r[P2])           */
#define OP_IfPos         128 /* synopsis: if r[P1]>0 goto P2               */
#define OP_IfNeg         129 /* synopsis: if r[P1]<0 goto P2               */
#define OP_IfZero        130 /* synopsis: r[P1]+=P3, if r[P1]==0 goto P2   */


#define OP_Real          131 /* same as TK_FLOAT, synopsis: r[P2]=P4       */
#define OP_AggFinal      132 /* synopsis: accum=r[P1] N=P2                 */
#define OP_IncrVacuum    133
#define OP_Expire        134
#define OP_TableLock     135 /* synopsis: iDb=P1 root=P2 write=P3          */
#define OP_VBegin        136
#define OP_VCreate       137
#define OP_VDestroy      138
#define OP_VOpen         139
#define OP_VColumn       140 /* synopsis: r[P3]=vcolumn(P2)                */
#define OP_VNext         141


#define OP_ToText        142 /* same as TK_TO_TEXT                         */
#define OP_ToBlob        143 /* same as TK_TO_BLOB                         */
#define OP_ToNumeric     144 /* same as TK_TO_NUMERIC                      */
#define OP_ToInt         145 /* same as TK_TO_INT                          */
#define OP_ToReal        146 /* same as TK_TO_REAL                         */
#define OP_VRename       147
#define OP_Pagecount     148
#define OP_MaxPgcnt      149
#define OP_Trace         150
#define OP_Noop          151
#define OP_Explain       152


/* 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_OUT2_PRERELEASE 0x0002  /* out2-prerelease: */
#define OPFLG_IN1             0x0004  /* in1:   P1 is an input */
#define OPFLG_IN2             0x0008  /* in2:   P2 is an input */
#define OPFLG_IN3             0x0010  /* in3:   P3 is an input */
#define OPFLG_OUT2            0x0020  /* out2:  P2 is an output */
#define OPFLG_OUT3            0x0040  /* out3:  P3 is an output */
#define OPFLG_INITIALIZER {\
/*   0 */ 0x00, 0x00, 0x00, 0x00, 0x00, 0x01, 0x01, 0x01,\
/*   8 */ 0x01, 0x01, 0x00, 0x00, 0x02, 0x00, 0x01, 0x00,\
/*  16 */ 0x01, 0x01, 0x04, 0x24, 0x04, 0x10, 0x00, 0x02,\
/*  24 */ 0x02, 0x02, 0x02, 0x02, 0x02, 0x00, 0x00, 0x20,\
/*  32 */ 0x00, 0x00, 0x04, 0x05, 0x04, 0x00, 0x00, 0x01,\
/*  40 */ 0x01, 0x05, 0x05, 0x00, 0x00, 0x00, 0x02, 0x02,\
/*  48 */ 0x10, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,\
/*  56 */ 0x00, 0x11, 0x11, 0x11, 0x11, 0x08, 0x11, 0x11,\
/*  64 */ 0x11, 0x11, 0x02, 0x02, 0x00, 0x4c, 0x4c, 0x00,\
/*  72 */ 0x00, 0x00, 0x05, 0x05, 0x15, 0x15, 0x15, 0x15,\
/*  80 */ 0x15, 0x15, 0x00, 0x4c, 0x4c, 0x4c, 0x4c, 0x4c,\
/*  88 */ 0x4c, 0x4c, 0x4c, 0x4c, 0x4c, 0x00, 0x24, 0x02,\
/*  96 */ 0x00, 0x00, 0x02, 0x00, 0x01, 0x01, 0x01, 0x01,\
/* 104 */ 0x08, 0x08, 0x00, 0x02, 0x01, 0x01, 0x02, 0x00,\
/* 112 */ 0x02, 0x02, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,\
/* 120 */ 0x0c, 0x45, 0x15, 0x01, 0x02, 0x00, 0x01, 0x08,\
/* 128 */ 0x05, 0x05, 0x05, 0x02, 0x00, 0x01, 0x00, 0x00,\
/* 136 */ 0x00, 0x00, 0x00, 0x00, 0x00, 0x01, 0x04, 0x04,\
/* 144 */ 0x04, 0x04, 0x04, 0x00, 0x02, 0x02, 0x00, 0x00,\
/* 152 */ 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 void sqlite3VdbeClearObject(sqlite3*,Vdbe*);
SQLITE_PRIVATE void sqlite3VdbeMakeReady(Vdbe*,Parse*);
SQLITE_PRIVATE int sqlite3VdbeFinalize(Vdbe*);
SQLITE_PRIVATE void sqlite3VdbeResolveLabel(Vdbe*, int);
SQLITE_PRIVATE int sqlite3VdbeCurrentAddr(Vdbe*);
#ifdef SQLITE_DEBUG
SQLITE_PRIVATE   int sqlite3VdbeAssertMayAbort(Vdbe *, int);

#endif
SQLITE_PRIVATE void sqlite3VdbeResetStepResult(Vdbe*);
SQLITE_PRIVATE void sqlite3VdbeRewind(Vdbe*);
SQLITE_PRIVATE int sqlite3VdbeReset(Vdbe*);
SQLITE_PRIVATE void sqlite3VdbeSetNumCols(Vdbe*,int);
SQLITE_PRIVATE int sqlite3VdbeSetColName(Vdbe*, int, int, const char *, void(*)(void*));
SQLITE_PRIVATE void sqlite3VdbeCountChanges(Vdbe*);

#define SQLITE_ForeignKeys    0x00080000  /* Enforce foreign key constraints  */
#define SQLITE_AutoIndex      0x00100000  /* Enable automatic indexes */
#define SQLITE_PreferBuiltin  0x00200000  /* Preference to built-in funcs */
#define SQLITE_LoadExtension  0x00400000  /* Enable load_extension */
#define SQLITE_EnableTrigger  0x00800000  /* True to enable triggers */
#define SQLITE_DeferFKs       0x01000000  /* Defer all FK constraints */
#define SQLITE_QueryOnly      0x02000000  /* Disable database changes */
#define SQLITE_VdbeEQP        0x04000000  /* Debug EXPLAIN QUERY PLAN */


/*
** Bits of the sqlite3.dbOptFlags field that are used by the
** sqlite3_test_control(SQLITE_TESTCTRL_OPTIMIZATIONS,...) interface to
** selectively disable various optimizations.
*/

#define OptimizationDisabled(db, mask)  (((db)->dbOptFlags&(mask))!=0)
#define OptimizationEnabled(db, mask)   (((db)->dbOptFlags&(mask))==0)
#else
#define OptimizationDisabled(db, mask)  0
#define OptimizationEnabled(db, mask)   1
#endif

/*
** Return true if it OK to factor constant expressions into the initialization
** code. The argument is a Parse object for the code generator.
*/
#define ConstFactorOk(P) \
  ((P)->cookieGoto>0 && OptimizationEnabled((P)->db,SQLITE_FactorOutConst))

/*
** Possible values for the sqlite.magic field.
** The numbers are obtained at random and have no special meaning, other
** than being distinct from one another.
*/
#define SQLITE_MAGIC_OPEN     0xa029a697  /* Database is open */
#define SQLITE_MAGIC_CLOSED   0x9f3c2d33  /* Database is closed */

#define SQLITE_FUNC_EPHEM    0x010 /* Ephemeral.  Delete with VDBE */
#define SQLITE_FUNC_NEEDCOLL 0x020 /* sqlite3GetFuncCollSeq() might be called */
#define SQLITE_FUNC_LENGTH   0x040 /* Built-in length() function */
#define SQLITE_FUNC_TYPEOF   0x080 /* Built-in typeof() function */
#define SQLITE_FUNC_COUNT    0x100 /* Built-in count(*) aggregate */
#define SQLITE_FUNC_COALESCE 0x200 /* Built-in coalesce() or ifnull() */
#define SQLITE_FUNC_UNLIKELY 0x400 /* Built-in unlikely() function */
#define SQLITE_FUNC_CONSTANT 0x800 /* Constant inputs give a constant output */

/*
** The following three macros, FUNCTION(), LIKEFUNC() and AGGREGATE() are
** used to create the initializers for the FuncDef structures.
**
**   FUNCTION(zName, nArg, iArg, bNC, xFunc)
**     Used to create a scalar function definition of a function zName 
**     implemented by C function xFunc that accepts nArg arguments. The
**     value passed as iArg is cast to a (void*) and made available
**     as the user-data (sqlite3_user_data()) for the function. If 
**     argument bNC is true, then the SQLITE_FUNC_NEEDCOLL flag is set.
**
**   VFUNCTION(zName, nArg, iArg, bNC, xFunc)
**     Like FUNCTION except it omits the SQLITE_FUNC_CONSTANT flag.
**
**   AGGREGATE(zName, nArg, iArg, bNC, xStep, xFinal)
**     Used to create an aggregate function definition implemented by
**     the C functions xStep and xFinal. The first four parameters
**     are interpreted in the same way as the first 4 parameters to
**     FUNCTION().
**
**   LIKEFUNC(zName, nArg, pArg, flags)
**     Used to create a scalar function definition of a function zName 
**     that accepts nArg arguments and is implemented by a call to C 
**     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}
#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}
#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}
#define STR_FUNCTION(zName, nArg, pArg, bNC, xFunc) \
  {nArg, SQLITE_FUNC_CONSTANT|SQLITE_UTF8|(bNC*SQLITE_FUNC_NEEDCOLL), \
   pArg, 0, xFunc, 0, 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}
#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}

/*
** All current savepoints are stored in a linked list starting at
** sqlite3.pSavepoint. The first element in the list is the most recently

#define EP_Resolved  0x000004 /* IDs have been resolved to COLUMNs */
#define EP_Error     0x000008 /* Expression contains one or more errors */
#define EP_Distinct  0x000010 /* Aggregate function with DISTINCT keyword */
#define EP_VarSelect 0x000020 /* pSelect is correlated, not constant */
#define EP_DblQuoted 0x000040 /* token.z was originally in "..." */
#define EP_InfixFunc 0x000080 /* True for an infix function: LIKE, GLOB, etc */
#define EP_Collate   0x000100 /* Tree contains a TK_COLLATE opeartor */
      /* unused      0x000200 */
#define EP_IntValue  0x000400 /* Integer value contained in u.iValue */
#define EP_xIsSelect 0x000800 /* x.pSelect is valid (otherwise x.pList is) */
#define EP_Skip      0x001000 /* COLLATE, AS, or UNLIKELY */
#define EP_Reduced   0x002000 /* Expr struct EXPR_REDUCEDSIZE bytes only */
#define EP_TokenOnly 0x004000 /* Expr struct EXPR_TOKENONLYSIZE bytes only */
#define EP_Static    0x008000 /* Held in memory not obtained from malloc() */
#define EP_MemToken  0x010000 /* Need to sqlite3DbFree() Expr.zToken */
#define EP_NoReduce  0x020000 /* Cannot EXPRDUP_REDUCE this Expr */
#define EP_Unlikely  0x040000 /* unlikely() or likelihood() function */
#define EP_Constant  0x080000 /* Node is a constant */

/*
** These macros can be used to test, set, or clear bits in the 
** Expr.flags field.
*/
#define ExprHasProperty(E,P)     (((E)->flags&(P))!=0)
#define ExprHasAllProperty(E,P)  (((E)->flags&(P))==(P))

  struct ExprList_item { /* For each expression in the list */
    Expr *pExpr;            /* The list of expressions */
    char *zName;            /* Token associated with this expression */
    char *zSpan;            /* Original text of the expression */
    u8 sortOrder;           /* 1 for DESC or 0 for ASC */
    unsigned done :1;       /* A flag to indicate when processing is finished */
    unsigned bSpanIsTab :1; /* zSpan holds DB.TABLE.COLUMN */
    unsigned reusable :1;   /* Constant expression is reusable */
    union {
      struct {
        u16 iOrderByCol;      /* For ORDER BY, column number in result set */
        u16 iAlias;           /* Index into Parse.aAlias[] for zName */
      } x;
      int iConstExprReg;      /* Register in which Expr value is cached */
    } u;
  } *a;                  /* Alloc a power of two greater or equal to nExpr */
};

/*
** An instance of this structure is used by the parser to record both
** the parse tree for an expression and the span of input text for an
** expression.

    int iTable;           /* Table cursor number */
    int iColumn;          /* Table column number */
    u8 tempReg;           /* iReg is a temp register that needs to be freed */
    int iLevel;           /* Nesting level */
    int iReg;             /* Reg with value of this column. 0 means none. */
    int lru;              /* Least recently used entry has the smallest value */
  } aColCache[SQLITE_N_COLCACHE];  /* One for each column cache entry */
  ExprList *pConstExpr;/* Constant expressions */
  yDbMask writeMask;   /* Start a write transaction on these databases */
  yDbMask cookieMask;  /* Bitmask of schema verified databases */
  int cookieGoto;      /* Address of OP_Goto to cookie verifier subroutine */
  int cookieValue[SQLITE_MAX_ATTACHED+2];  /* Values of cookies to verify */
  int regRowid;        /* Register holding rowid of CREATE TABLE entry */
  int regRoot;         /* Register holding root page number for new objects */
  int nMaxArg;         /* Max args passed to user function by sub-program */

struct Sqlite3Config {
  int bMemstat;                     /* True to enable memory status */
  int bCoreMutex;                   /* True to enable core mutexing */
  int bFullMutex;                   /* True to enable full mutexing */
  int bOpenUri;                     /* True to interpret filenames as URIs */
  int bUseCis;                      /* Use covering indices for full-scans */
  int mxStrlen;                     /* Maximum string length */
  int neverCorrupt;                 /* Database is always well-formed */
  int szLookaside;                  /* Default lookaside buffer size */
  int nLookaside;                   /* Default lookaside buffer count */
  sqlite3_mem_methods m;            /* Low-level memory allocation interface */
  sqlite3_mutex_methods mutex;      /* Low-level mutex interface */
  sqlite3_pcache_methods2 pcache2;  /* Low-level page-cache interface */
  void *pHeap;                      /* Heap storage space */
  int nHeap;                        /* Size of pHeap[] */

  int bLocaltimeFault;              /* True to fail localtime() calls */
#ifdef SQLITE_ENABLE_SQLLOG
  void(*xSqllog)(void*,sqlite3*,const char*, int);
  void *pSqllogArg;
#endif
};

/*
** This macro is used inside of assert() statements to indicate that
** the assert is only valid on a well-formed database.  Instead of:
**
**     assert( X );
**
** One writes:
**
**     assert( X || CORRUPT_DB );
**
** CORRUPT_DB is true during normal operation.  CORRUPT_DB does not indicate
** that the database is definitely corrupt, only that it might be corrupt.
** For most test cases, CORRUPT_DB is set to false using a special
** sqlite3_test_control().  This enables assert() statements to prove
** things that are always true for well-formed databases.
*/
#define CORRUPT_DB  (sqlite3Config.neverCorrupt==0)

/*
** Context pointer passed down through the tree-walk.
*/
struct Walker {
  int (*xExprCallback)(Walker*, Expr*);     /* Callback for expressions */
  int (*xSelectCallback)(Walker*,Select*);  /* Callback for SELECTs */
  Parse *pParse;                            /* Parser context.  */

SQLITE_PRIVATE void sqlite3ExprCacheStore(Parse*, int, int, int);
SQLITE_PRIVATE void sqlite3ExprCachePush(Parse*);
SQLITE_PRIVATE void sqlite3ExprCachePop(Parse*, int);
SQLITE_PRIVATE void sqlite3ExprCacheRemove(Parse*, int, int);
SQLITE_PRIVATE void sqlite3ExprCacheClear(Parse*);
SQLITE_PRIVATE void sqlite3ExprCacheAffinityChange(Parse*, int, int);
SQLITE_PRIVATE int sqlite3ExprCode(Parse*, Expr*, int);
SQLITE_PRIVATE void sqlite3ExprCodeAtInit(Parse*, Expr*, int, u8);
SQLITE_PRIVATE int sqlite3ExprCodeTemp(Parse*, Expr*, int*);
SQLITE_PRIVATE int sqlite3ExprCodeTarget(Parse*, Expr*, int);
SQLITE_PRIVATE int sqlite3ExprCodeAndCache(Parse*, Expr*, int);

SQLITE_PRIVATE int sqlite3ExprCodeExprList(Parse*, ExprList*, int, u8);
#define SQLITE_ECEL_DUP      0x01  /* Deep, not shallow copies */
#define SQLITE_ECEL_FACTOR   0x02  /* Factor out constant terms */
SQLITE_PRIVATE void sqlite3ExprIfTrue(Parse*, Expr*, int, int);
SQLITE_PRIVATE void sqlite3ExprIfFalse(Parse*, Expr*, int, int);
SQLITE_PRIVATE Table *sqlite3FindTable(sqlite3*,const char*, const char*);
SQLITE_PRIVATE Table *sqlite3LocateTable(Parse*,int isView,const char*, const char*);
SQLITE_PRIVATE Table *sqlite3LocateTableItem(Parse*,int isView,struct SrcList_item *);
SQLITE_PRIVATE Index *sqlite3FindIndex(sqlite3*,const char*, const char*);
SQLITE_PRIVATE void sqlite3UnlinkAndDeleteTable(sqlite3*,int,const char*);

SQLITE_PRIVATE int sqlite3IsRowid(const char*);
SQLITE_PRIVATE void sqlite3GenerateRowDelete(Parse*,Table*,Trigger*,int,int,int,i16,u8,u8,u8);
SQLITE_PRIVATE void sqlite3GenerateRowIndexDelete(Parse*, Table*, int, int, int*);
SQLITE_PRIVATE int sqlite3GenerateIndexKey(Parse*, Index*, int, int, int, int*);
SQLITE_PRIVATE void sqlite3GenerateConstraintChecks(Parse*,Table*,int*,int,int,int,int,
                                     u8,u8,int,int*);
SQLITE_PRIVATE void sqlite3CompleteInsertion(Parse*,Table*,int,int,int,int*,int,int,int);
SQLITE_PRIVATE int sqlite3OpenTableAndIndices(Parse*, Table*, int, 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 void sqlite3RowidConstraint(Parse*, int, Table*);
SQLITE_PRIVATE Expr *sqlite3ExprDup(sqlite3*,Expr*,int);

  FuncDestructor *pDestructor
);
SQLITE_PRIVATE int sqlite3ApiExit(sqlite3 *db, int);
SQLITE_PRIVATE int sqlite3OpenTempDatabase(Parse *);

SQLITE_PRIVATE void sqlite3StrAccumInit(StrAccum*, char*, int, int);
SQLITE_PRIVATE void sqlite3StrAccumAppend(StrAccum*,const char*,int);
SQLITE_PRIVATE void sqlite3StrAccumAppendAll(StrAccum*,const char*);
SQLITE_PRIVATE void sqlite3AppendSpace(StrAccum*,int);
SQLITE_PRIVATE char *sqlite3StrAccumFinish(StrAccum*);
SQLITE_PRIVATE void sqlite3StrAccumReset(StrAccum*);
SQLITE_PRIVATE void sqlite3SelectDestInit(SelectDest*,int,int);
SQLITE_PRIVATE Expr *sqlite3CreateColumnExpr(sqlite3 *, SrcList *, int, int);

SQLITE_PRIVATE void sqlite3BackupRestart(sqlite3_backup *);

SQLITE_PRIVATE int sqlite3VtabCallDestroy(sqlite3*, int, const char *);
SQLITE_PRIVATE int sqlite3VtabBegin(sqlite3 *, VTable *);
SQLITE_PRIVATE FuncDef *sqlite3VtabOverloadFunction(sqlite3 *,FuncDef*, int nArg, Expr*);
SQLITE_PRIVATE void sqlite3InvalidFunction(sqlite3_context*,int,sqlite3_value**);
SQLITE_PRIVATE sqlite3_int64 sqlite3StmtCurrentTime(sqlite3_context*);
SQLITE_PRIVATE int sqlite3VdbeParameterIndex(Vdbe*, const char*, int);
SQLITE_PRIVATE int sqlite3TransferBindings(sqlite3_stmt *, sqlite3_stmt *);
SQLITE_PRIVATE void sqlite3ParserReset(Parse*);
SQLITE_PRIVATE int sqlite3Reprepare(Vdbe*);
SQLITE_PRIVATE void sqlite3ExprListCheckLength(Parse*, ExprList*, const char*);
SQLITE_PRIVATE CollSeq *sqlite3BinaryCompareCollSeq(Parse *, Expr *, Expr *);
SQLITE_PRIVATE int sqlite3TempInMemory(const sqlite3*);
SQLITE_PRIVATE const char *sqlite3JournalModename(int);
#ifndef SQLITE_OMIT_WAL
SQLITE_PRIVATE   int sqlite3Checkpoint(sqlite3*, int, int, int*, int*);

SQLITE_PRIVATE SQLITE_WSD struct Sqlite3Config sqlite3Config = {
   SQLITE_DEFAULT_MEMSTATUS,  /* bMemstat */
   1,                         /* bCoreMutex */
   SQLITE_THREADSAFE==1,      /* bFullMutex */
   SQLITE_USE_URI,            /* bOpenUri */
   SQLITE_ALLOW_COVERING_INDEX_SCAN,   /* bUseCis */
   0x7ffffffe,                /* mxStrlen */
   0,                         /* neverCorrupt */
   128,                       /* szLookaside */
   500,                       /* nLookaside */
   {0,0,0,0,0,0,0,0},         /* m */
   {0,0,0,0,0,0,0,0,0},       /* mutex */
   {0,0,0,0,0,0,0,0,0,0,0,0,0},/* pcache2 */
   (void*)0,                  /* pHeap */
   0,                         /* nHeap */

   0,                         /* pLogArg */
   0,                         /* bLocaltimeFault */
#ifdef SQLITE_ENABLE_SQLLOG
   0,                         /* xSqllog */
   0                          /* pSqllogArg */
#endif
};


/*
** Hash table for global functions - functions common to all
** database connections.  After initialization, this table is
** read-only.
*/
SQLITE_PRIVATE SQLITE_WSD FuncDefHash sqlite3GlobalFunctions;

#endif
#ifdef SQLITE_SMALL_STACK
  "SMALL_STACK",
#endif
#ifdef SQLITE_SOUNDEX
  "SOUNDEX",
#endif
#ifdef SQLITE_SYSTEM_MALLOC
  "SYSTEM_MALLOC",
#endif
#ifdef SQLITE_TCL
  "TCL",
#endif
#if defined(SQLITE_TEMP_STORE) && !defined(SQLITE_TEMP_STORE_xc)
  "TEMP_STORE=" CTIMEOPT_VAL(SQLITE_TEMP_STORE),
#endif
#ifdef SQLITE_TEST
  "TEST",
#endif
#if defined(SQLITE_THREADSAFE)
  "THREADSAFE=" CTIMEOPT_VAL(SQLITE_THREADSAFE),
#endif
#ifdef SQLITE_USE_ALLOCA
  "USE_ALLOCA",
#endif
#ifdef SQLITE_WIN32_MALLOC
  "WIN32_MALLOC",
#endif
#ifdef SQLITE_ZERO_MALLOC
  "ZERO_MALLOC"
#endif
};

/*

** of the following structure.
*/
typedef struct VdbeOp Op;

/*
** Boolean values
*/
typedef unsigned Bool;

/* Opaque type used by code in vdbesort.c */
typedef struct VdbeSorter VdbeSorter;

/* Opaque type used by the explainer */
typedef struct Explain Explain;

/* Elements of the linked list at Vdbe.pAuxData */
typedef struct AuxData AuxData;

/*
** A cursor is a pointer into a single BTree within a database file.
** The cursor can seek to a BTree entry with a particular key, or
** loop over all entries of the Btree.  You can also insert new BTree
** entries or retrieve the key or data from the entry that the cursor
** is currently pointing to.
**
** Cursors can also point to virtual tables, sorters, or "pseudo-tables".
** A pseudo-table is a single-row table implemented by registers.
** 
** Every cursor that the virtual machine has open is represented by an
** instance of the following structure.
*/
struct VdbeCursor {
  BtCursor *pCursor;    /* The cursor structure of the backend */
  Btree *pBt;           /* Separate file holding temporary table */
  KeyInfo *pKeyInfo;    /* Info about index keys needed by index cursors */
  int seekResult;       /* Result of previous sqlite3BtreeMoveto() */
  int pseudoTableReg;   /* Register holding pseudotable content. */
  i16 nField;           /* Number of fields in the header */
  u16 nHdrParsed;       /* Number of header fields parsed so far */

  i8 iDb;               /* Index of cursor database in db->aDb[] (or -1) */

  u8 nullRow;           /* True if pointing to a row with no data */
  u8 rowidIsValid;      /* True if lastRowid is valid */
  u8 deferredMoveto;    /* A call to sqlite3BtreeMoveto() is needed */
  Bool useRandomRowid:1;/* Generate new record numbers semi-randomly */
  Bool isTable:1;       /* True if a table requiring integer keys */

  Bool isOrdered:1;     /* True if the underlying table is BTREE_UNORDERED */

  Bool multiPseudo:1;   /* Multi-register pseudo-cursor */
  sqlite3_vtab_cursor *pVtabCursor;  /* The cursor for a virtual table */

  i64 seqCount;         /* Sequence counter */
  i64 movetoTarget;     /* Argument to the deferred sqlite3BtreeMoveto() */
  i64 lastRowid;        /* Rowid being deleted by OP_Delete */
  VdbeSorter *pSorter;  /* Sorter object for OP_SorterOpen cursors */




  /* 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
  ** CACHE_STALE and so setting cacheStatus=CACHE_STALE guarantees that
  ** the cache is out of date.
  **
  ** aRow might point to (ephemeral) data for the current row, or it might
  ** be NULL.
  */
  u32 cacheStatus;      /* Cache is valid if this matches Vdbe.cacheCtr */
  u32 payloadSize;      /* Total number of bytes in the record */
  u32 szRow;            /* Byte available in aRow */
  u32 iHdrOffset;       /* Offset to next unparsed byte of the header */
  const u8 *aRow;       /* Data for the current row, if all on one page */
  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

#endif
  i64 iCurrentTime;       /* Value of julianday('now') for this statement */
  i64 nFkConstraint;      /* Number of imm. FK constraints this VM */
  i64 nStmtDefCons;       /* Number of def. constraints when stmt started */
  i64 nStmtDefImmCons;    /* Number of def. imm constraints when stmt started */
  char *zSql;             /* Text of the SQL statement that generated this */
  void *pFree;            /* Free this when deleting the vdbe */



#ifdef SQLITE_ENABLE_TREE_EXPLAIN
  Explain *pExplain;      /* The explainer */
  char *zExplain;         /* Explanation of data structures */
#endif
  VdbeFrame *pFrame;      /* Parent frame */
  VdbeFrame *pDelFrame;   /* List of frame objects to free on VM reset */
  int nFrame;             /* Number of frames in pFrame list */

void sqliteVdbePopStack(Vdbe*,int);
SQLITE_PRIVATE int sqlite3VdbeCursorMoveto(VdbeCursor*);
#if defined(SQLITE_DEBUG) || defined(VDBE_PROFILE)
SQLITE_PRIVATE void sqlite3VdbePrintOp(FILE*, int, Op*);
#endif
SQLITE_PRIVATE u32 sqlite3VdbeSerialTypeLen(u32);
SQLITE_PRIVATE u32 sqlite3VdbeSerialType(Mem*, int);
SQLITE_PRIVATE u32 sqlite3VdbeSerialPut(unsigned char*, Mem*, u32);
SQLITE_PRIVATE u32 sqlite3VdbeSerialGet(const unsigned char*, u32, Mem*);
SQLITE_PRIVATE void sqlite3VdbeDeleteAuxData(Vdbe*, int, int);

int sqlite2BtreeKeyCompare(BtCursor *, const void *, int, int, int *);
SQLITE_PRIVATE int sqlite3VdbeIdxKeyCompare(VdbeCursor*,UnpackedRecord*,int*);
SQLITE_PRIVATE int sqlite3VdbeIdxRowid(sqlite3*, BtCursor *, i64 *);
SQLITE_PRIVATE int sqlite3MemCompare(const Mem*, const Mem*, const CollSeq*);

SQLITE_PRIVATE int sqlite3VdbeMemStringify(Mem*, int);
SQLITE_PRIVATE i64 sqlite3VdbeIntValue(Mem*);
SQLITE_PRIVATE int sqlite3VdbeMemIntegerify(Mem*);
SQLITE_PRIVATE double sqlite3VdbeRealValue(Mem*);
SQLITE_PRIVATE void sqlite3VdbeIntegerAffinity(Mem*);
SQLITE_PRIVATE int sqlite3VdbeMemRealify(Mem*);
SQLITE_PRIVATE int sqlite3VdbeMemNumerify(Mem*);
SQLITE_PRIVATE int sqlite3VdbeMemFromBtree(BtCursor*,u32,u32,int,Mem*);
SQLITE_PRIVATE void sqlite3VdbeMemRelease(Mem *p);
SQLITE_PRIVATE void sqlite3VdbeMemReleaseExternal(Mem *p);
#define VdbeMemRelease(X)  \
  if((X)->flags&(MEM_Agg|MEM_Dyn|MEM_RowSet|MEM_Frame)) \
    sqlite3VdbeMemReleaseExternal(X);
SQLITE_PRIVATE int sqlite3VdbeMemFinalize(Mem*, FuncDef*);
SQLITE_PRIVATE const char *sqlite3OpcodeName(int);

/*
** This version of the memory allocator is the default.  It is
** used when no other memory allocator is specified using compile-time
** macros.
*/
#ifdef SQLITE_SYSTEM_MALLOC










#if defined(__APPLE__) && !defined(SQLITE_WITHOUT_ZONEMALLOC)

/*
** Use the zone allocator available on apple products unless the
** SQLITE_WITHOUT_ZONEMALLOC symbol is defined.
*/
#include <sys/sysctl.h>

#else /* if not __APPLE__ */

/*
** Use standard C library malloc and free on non-Apple systems.  
** Also used by Apple systems if SQLITE_WITHOUT_ZONEMALLOC is defined.
*/
#define SQLITE_MALLOC(x)             malloc(x)
#define SQLITE_FREE(x)               free(x)
#define SQLITE_REALLOC(x,y)          realloc((x),(y))


/*
** The malloc.h header file is needed for malloc_usable_size() function
** on some systems (e.g. Linux).
*/
#if defined(HAVE_MALLOC_H) && defined(HAVE_MALLOC_USABLE_SIZE)
#  define SQLITE_USE_MALLOC_H
#  define SQLITE_USE_MALLOC_USABLE_SIZE
/*
** The MSVCRT has malloc_usable_size(), but it is called _msize().  The
** use of _msize() is automatic, but can be disabled by compiling with
** -DSQLITE_WITHOUT_MSIZE.  Using the _msize() function also requires
** the malloc.h header file.
*/
#elif defined(_MSC_VER) && !defined(SQLITE_WITHOUT_MSIZE)
#  define SQLITE_USE_MALLOC_H
#  define SQLITE_USE_MSIZE
#endif

/*
** Include the malloc.h header file, if necessary.  Also set define macro
** SQLITE_MALLOCSIZE to the appropriate function name, which is _msize()
** for MSVC and malloc_usable_size() for most other systems (e.g. Linux).
** The memory size function can always be overridden manually by defining
** the macro SQLITE_MALLOCSIZE to the desired function name.
*/
#if defined(SQLITE_USE_MALLOC_H)
#  include <malloc.h>
#  if defined(SQLITE_USE_MALLOC_USABLE_SIZE)
#    if !defined(SQLITE_MALLOCSIZE)
#      define SQLITE_MALLOCSIZE(x)   malloc_usable_size(x)
#    endif
#  elif defined(SQLITE_USE_MSIZE)
#    if !defined(SQLITE_MALLOCSIZE)
#      define SQLITE_MALLOCSIZE      _msize
#    endif
#  endif
#endif /* defined(SQLITE_USE_MALLOC_H) */

#endif /* __APPLE__ or not __APPLE__ */

/*
** Like malloc(), but remember the size of the allocation
** so that we can find it later using sqlite3MemSize().
**

** Return the size of an outstanding allocation, in bytes.  The
** size returned omits the 8-byte header overhead.  This only
** works for chunks that are currently checked out.
*/
static int memsys5Size(void *p){
  int iSize = 0;
  if( p ){
    int i = (int)(((u8 *)p-mem5.zPool)/mem5.szAtom);
    assert( i>=0 && i<mem5.nBlock );
    iSize = mem5.szAtom * (1 << (mem5.aCtrl[i]&CTRL_LOGSIZE));
  }
  return iSize;
}




















/*
** Return a block of memory of at least nBytes in size.
** Return NULL if unable.  Return NULL if nBytes==0.
**
** The caller guarantees that nByte is positive.
**
** The caller has obtained a mutex prior to invoking this

  */
  for(iBin=iLogsize; mem5.aiFreelist[iBin]<0 && iBin<=LOGMAX; iBin++){}
  if( iBin>LOGMAX ){
    testcase( sqlite3GlobalConfig.xLog!=0 );
    sqlite3_log(SQLITE_NOMEM, "failed to allocate %u bytes", nByte);
    return 0;
  }
  i = mem5.aiFreelist[iBin];
  memsys5Unlink(i, iBin);
  while( iBin>iLogsize ){
    int newSize;

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

static void memsys5FreeUnsafe(void *pOld){
  u32 size, iLogsize;
  int iBlock;

  /* Set iBlock to the index of the block pointed to by pOld in 
  ** the array of mem5.szAtom byte blocks pointed to by mem5.zPool.
  */
  iBlock = (int)(((u8 *)pOld-mem5.zPool)/mem5.szAtom);

  /* Check that the pointer pOld points to a valid, non-free block. */
  assert( iBlock>=0 && iBlock<mem5.nBlock );
  assert( ((u8 *)pOld-mem5.zPool)%mem5.szAtom==0 );
  assert( (mem5.aCtrl[iBlock] & CTRL_FREE)==0 );

  iLogsize = mem5.aCtrl[iBlock] & CTRL_LOGSIZE;

}

/*
** TRUE if p is a lookaside memory allocation from db
*/
#ifndef SQLITE_OMIT_LOOKASIDE
static int isLookaside(sqlite3 *db, void *p){
  return p>=db->lookaside.pStart && p<db->lookaside.pEnd;
}
#else
#define isLookaside(A,B) 0
#endif

/*
** Return the size of a memory allocation previously obtained from
** sqlite3Malloc() or sqlite3_malloc().
*/
SQLITE_PRIVATE int sqlite3MallocSize(void *p){
  assert( sqlite3MemdebugHasType(p, MEMTYPE_HEAP) );
  assert( sqlite3MemdebugNoType(p, MEMTYPE_DB) );
  return sqlite3GlobalConfig.m.xSize(p);
}
SQLITE_PRIVATE int sqlite3DbMallocSize(sqlite3 *db, void *p){
  assert( db!=0 );
  assert( sqlite3_mutex_held(db->mutex) );
  if( isLookaside(db, p) ){
    return db->lookaside.sz;
  }else{
    assert( sqlite3MemdebugHasType(p, MEMTYPE_DB) );
    assert( sqlite3MemdebugHasType(p, MEMTYPE_LOOKASIDE|MEMTYPE_HEAP) );
    assert( db!=0 || sqlite3MemdebugNoType(p, MEMTYPE_LOOKASIDE) );
    return sqlite3GlobalConfig.m.xSize(p);
  }

    sqlite3StrAccumAppend(pAccum, zSpaces, sizeof(zSpaces)-1);
    N -= sizeof(zSpaces)-1;
  }
  if( N>0 ){
    sqlite3StrAccumAppend(pAccum, zSpaces, N);
  }
}

/*
** Set the StrAccum object to an error mode.
*/
void setStrAccumError(StrAccum *p, u8 eError){
  p->accError = eError;
  p->nAlloc = 0;
}

/*
** On machines with a small stack size, you can redefine the
** SQLITE_PRINT_BUF_SIZE to be something smaller, if desired.
*/
#ifndef SQLITE_PRINT_BUF_SIZE
# define SQLITE_PRINT_BUF_SIZE 70

        if( precision<etBUFSIZE-10 ){
          nOut = etBUFSIZE;
          zOut = buf;
        }else{
          nOut = precision + 10;
          zOut = zExtra = sqlite3Malloc( nOut );
          if( zOut==0 ){
            setStrAccumError(pAccum, STRACCUM_NOMEM);
            return;
          }
        }
        bufpt = &zOut[nOut-1];
        if( xtype==etORDINAL ){
          static const char zOrd[] = "thstndrd";
          int x = (int)(longvalue % 10);

          e2 = 0;
        }else{
          e2 = exp;
        }
        if( MAX(e2,0)+precision+width > etBUFSIZE - 15 ){
          bufpt = zExtra = sqlite3Malloc( MAX(e2,0)+precision+width+15 );
          if( bufpt==0 ){
            setStrAccumError(pAccum, STRACCUM_NOMEM);
            return;
          }
        }
        zOut = bufpt;
        nsd = 16 + flag_altform2*10;
        flag_dp = (precision>0 ?1:0) | flag_alternateform | flag_altform2;
        /* The sign in front of the number */

          if( ch==q )  n++;
        }
        needQuote = !isnull && xtype==etSQLESCAPE2;
        n += i + 1 + needQuote*2;
        if( n>etBUFSIZE ){
          bufpt = zExtra = sqlite3Malloc( n );
          if( bufpt==0 ){
            setStrAccumError(pAccum, STRACCUM_NOMEM);
            return;
          }
        }else{
          bufpt = buf;
        }
        j = 0;
        if( needQuote ) bufpt[j++] = q;

        /* The precision in %q and %Q means how many input characters to
        ** consume, not the length of the output...
        ** if( precision>=0 && precision<length ) length = precision; */
        break;
      }
      case etTOKEN: {
        Token *pToken = va_arg(ap, Token*);
        if( pToken && pToken->n ){
          sqlite3StrAccumAppend(pAccum, (const char*)pToken->z, pToken->n);
        }
        length = width = 0;
        break;
      }
      case etSRCLIST: {
        SrcList *pSrc = va_arg(ap, SrcList*);
        int k = va_arg(ap, int);
        struct SrcList_item *pItem = &pSrc->a[k];
        assert( k>=0 && k<pSrc->nSrc );
        if( pItem->zDatabase ){
          sqlite3StrAccumAppendAll(pAccum, pItem->zDatabase);
          sqlite3StrAccumAppend(pAccum, ".", 1);
        }
        sqlite3StrAccumAppendAll(pAccum, pItem->zName);
        length = width = 0;
        break;
      }
      default: {
        assert( xtype==etINVALID );
        return;
      }

  }/* End for loop over the format string */
} /* End of function */

/*
** Append N bytes of text from z to the StrAccum object.
*/
SQLITE_PRIVATE void sqlite3StrAccumAppend(StrAccum *p, const char *z, int N){
  assert( z!=0 );
  assert( p->zText!=0 || p->nChar==0 || p->accError );
  assert( N>=0 );
  assert( p->accError==0 || p->nAlloc==0 );
  if( p->nChar+N >= p->nAlloc ){
    char *zNew;
    if( p->accError ){
      testcase(p->accError==STRACCUM_TOOBIG);
      testcase(p->accError==STRACCUM_NOMEM);
      return;
    }







    if( !p->useMalloc ){

      N = p->nAlloc - p->nChar - 1;
      setStrAccumError(p, STRACCUM_TOOBIG);
      if( N<=0 ){
        return;
      }
    }else{
      char *zOld = (p->zText==p->zBase ? 0 : p->zText);
      i64 szNew = p->nChar;
      szNew += N + 1;
      if( szNew > p->mxAlloc ){
        sqlite3StrAccumReset(p);
        setStrAccumError(p, STRACCUM_TOOBIG);
        return;
      }else{
        p->nAlloc = (int)szNew;
      }
      if( p->useMalloc==1 ){
        zNew = sqlite3DbRealloc(p->db, zOld, p->nAlloc);
      }else{
        zNew = sqlite3_realloc(zOld, p->nAlloc);
      }
      if( zNew ){
        if( zOld==0 && p->nChar>0 ) memcpy(zNew, p->zText, p->nChar);
        p->zText = zNew;
      }else{

        sqlite3StrAccumReset(p);
        setStrAccumError(p, STRACCUM_NOMEM);
        return;
      }
    }
  }
  assert( p->zText );
  memcpy(&p->zText[p->nChar], z, N);
  p->nChar += N;
}

/*
** Append the complete text of zero-terminated string z[] to the p string.
*/
SQLITE_PRIVATE void sqlite3StrAccumAppendAll(StrAccum *p, const char *z){
  sqlite3StrAccumAppend(p, z, sqlite3Strlen30(z));
}


/*
** 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 ){
    p->zText[p->nChar] = 0;
    if( p->useMalloc && p->zText==p->zBase ){
      if( p->useMalloc==1 ){
        p->zText = sqlite3DbMallocRaw(p->db, p->nChar+1 );
      }else{
        p->zText = sqlite3_malloc(p->nChar+1);
      }
      if( p->zText ){
        memcpy(p->zText, p->zBase, p->nChar+1);
      }else{
        setStrAccumError(p, STRACCUM_NOMEM);
      }
    }
  }
  return p->zText;
}

/*

/*
** Convert zNum to a 64-bit signed integer.
**
** If the zNum value is representable as a 64-bit twos-complement 
** integer, then write that value into *pNum and return 0.
**
** If zNum is exactly 9223372036854775808, return 2.  This special
** case is broken out because while 9223372036854775808 cannot be a 
** signed 64-bit integer, its negative -9223372036854775808 can be.
**
** If zNum is too big for a 64-bit integer and is not
** 9223372036854775808  or if zNum contains any non-numeric text,
** then return 1.
**
** length is the number of bytes in the string (bytes, not characters).
** The string is not necessarily zero-terminated.  The encoding is
** given by enc.
*/
SQLITE_PRIVATE int sqlite3Atoi64(const char *zNum, i64 *pNum, int length, u8 enc){

  }
  zStart = zNum;
  while( zNum<zEnd && zNum[0]=='0' ){ zNum+=incr; } /* Skip leading zeros. */
  for(i=0; &zNum[i]<zEnd && (c=zNum[i])>='0' && c<='9'; i+=incr){
    u = u*10 + c - '0';
  }
  if( u>LARGEST_INT64 ){
    *pNum = neg ? SMALLEST_INT64 : LARGEST_INT64;
  }else if( neg ){
    *pNum = -(i64)u;
  }else{
    *pNum = (i64)u;
  }
  testcase( i==18 );
  testcase( i==19 );

    }else if( c>0 ){
      /* zNum is greater than 9223372036854775808 so it overflows */
      return 1;
    }else{
      /* zNum is exactly 9223372036854775808.  Fits if negative.  The
      ** special case 2 overflow if positive */
      assert( u-1==LARGEST_INT64 );

      return neg ? 0 : 2;
    }
  }
}

/*
** If zNum represents an integer that will fit in 32-bits, then set

SQLITE_PRIVATE u64 sqlite3LogEstToInt(LogEst x){
  u64 n;
  if( x<10 ) return 1;
  n = x%10;
  x /= 10;
  if( n>=5 ) n -= 2;
  else if( n>=1 ) n -= 1;
  if( x>=3 ){
    return x>60 ? (u64)LARGEST_INT64 : (n+8)<<(x-3);
  }
  return (n+8)>>(3-x);
}

/************** End of util.c ************************************************/
/************** Begin file hash.c ********************************************/
/*
** 2001 September 22

SQLITE_PRIVATE const char *sqlite3OpcodeName(int i){
 static const char *const azName[] = { "?",
     /*   1 */ "Function"         OpHelp("r[P3]=func(r[P2@P5])"),
     /*   2 */ "Savepoint"        OpHelp(""),
     /*   3 */ "AutoCommit"       OpHelp(""),
     /*   4 */ "Transaction"      OpHelp(""),
     /*   5 */ "SorterNext"       OpHelp(""),
     /*   6 */ "PrevIfOpen"       OpHelp(""),
     /*   7 */ "NextIfOpen"       OpHelp(""),
     /*   8 */ "Prev"             OpHelp(""),
     /*   9 */ "Next"             OpHelp(""),
     /*  10 */ "AggStep"          OpHelp("accum=r[P3] step(r[P2@P5])"),
     /*  11 */ "Checkpoint"       OpHelp(""),
     /*  12 */ "JournalMode"      OpHelp(""),
     /*  13 */ "Vacuum"           OpHelp(""),
     /*  14 */ "VFilter"          OpHelp("iPlan=r[P3] zPlan='P4'"),
     /*  15 */ "VUpdate"          OpHelp("data=r[P3@P2]"),
     /*  16 */ "Goto"             OpHelp(""),
     /*  17 */ "Gosub"            OpHelp(""),
     /*  18 */ "Return"           OpHelp(""),


     /*  19 */ "Not"              OpHelp("r[P2]= !r[P1]"),
     /*  20 */ "Yield"            OpHelp(""),
     /*  21 */ "HaltIfNull"       OpHelp("if r[P3] null then 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 */ "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]=r[P1@P3]"),
     /*  31 */ "SCopy"            OpHelp("r[P2]=r[P1]"),
     /*  32 */ "ResultRow"        OpHelp("output=r[P1@P2]"),
     /*  33 */ "CollSeq"          OpHelp(""),
     /*  34 */ "AddImm"           OpHelp("r[P1]=r[P1]+P2"),
     /*  35 */ "MustBeInt"        OpHelp(""),
     /*  36 */ "RealAffinity"     OpHelp(""),
     /*  37 */ "Permutation"      OpHelp(""),
     /*  38 */ "Compare"          OpHelp(""),
     /*  39 */ "Jump"             OpHelp(""),
     /*  40 */ "Once"             OpHelp(""),
     /*  41 */ "If"               OpHelp(""),
     /*  42 */ "IfNot"            OpHelp(""),
     /*  43 */ "Column"           OpHelp("r[P3]=PX"),
     /*  44 */ "Affinity"         OpHelp("affinity(r[P1@P2])"),
     /*  45 */ "MakeRecord"       OpHelp("r[P3]=mkrec(r[P1@P2])"),
     /*  46 */ "Count"            OpHelp("r[P2]=count()"),
     /*  47 */ "ReadCookie"       OpHelp(""),
     /*  48 */ "SetCookie"        OpHelp(""),
     /*  49 */ "VerifyCookie"     OpHelp(""),
     /*  50 */ "OpenRead"         OpHelp("root=P2 iDb=P3"),
     /*  51 */ "OpenWrite"        OpHelp("root=P2 iDb=P3"),
     /*  52 */ "OpenAutoindex"    OpHelp("nColumn=P2"),
     /*  53 */ "OpenEphemeral"    OpHelp("nColumn=P2"),
     /*  54 */ "SorterOpen"       OpHelp(""),
     /*  55 */ "OpenPseudo"       OpHelp("content in r[P2@P3]"),
     /*  56 */ "Close"            OpHelp(""),
     /*  57 */ "SeekLt"           OpHelp("key=r[P3@P4]"),
     /*  58 */ "SeekLe"           OpHelp("key=r[P3@P4]"),
     /*  59 */ "SeekGe"           OpHelp("key=r[P3@P4]"),
     /*  60 */ "SeekGt"           OpHelp("key=r[P3@P4]"),
     /*  61 */ "Seek"             OpHelp("intkey=r[P2]"),
     /*  62 */ "NoConflict"       OpHelp("key=r[P3@P4]"),
     /*  63 */ "NotFound"         OpHelp("key=r[P3@P4]"),
     /*  64 */ "Found"            OpHelp("key=r[P3@P4]"),
     /*  65 */ "NotExists"        OpHelp("intkey=r[P3]"),
     /*  66 */ "Sequence"         OpHelp("r[P2]=rowid"),
     /*  67 */ "NewRowid"         OpHelp("r[P2]=rowid"),
     /*  68 */ "Insert"           OpHelp("intkey=r[P3] data=r[P2]"),


     /*  69 */ "Or"               OpHelp("r[P3]=(r[P1] || r[P2])"),
     /*  70 */ "And"              OpHelp("r[P3]=(r[P1] && r[P2])"),
     /*  71 */ "InsertInt"        OpHelp("intkey=P3 data=r[P2]"),
     /*  72 */ "Delete"           OpHelp(""),
     /*  73 */ "ResetCount"       OpHelp(""),


     /*  74 */ "IsNull"           OpHelp("if r[P1]==NULL goto P2"),
     /*  75 */ "NotNull"          OpHelp("if r[P1]!=NULL goto P2"),
     /*  76 */ "Ne"               OpHelp("if r[P1]!=r[P3] goto P2"),
     /*  77 */ "Eq"               OpHelp("if r[P1]==r[P3] goto P2"),
     /*  78 */ "Gt"               OpHelp("if r[P1]>r[P3] goto P2"),
     /*  79 */ "Le"               OpHelp("if r[P1]<=r[P3] goto P2"),
     /*  80 */ "Lt"               OpHelp("if r[P1]<r[P3] goto P2"),
     /*  81 */ "Ge"               OpHelp("if r[P1]>=r[P3] goto P2"),
     /*  82 */ "SorterCompare"    OpHelp("if key(P1)!=rtrim(r[P3],P4) goto P2"),
     /*  83 */ "BitAnd"           OpHelp("r[P3]=r[P1]&r[P2]"),
     /*  84 */ "BitOr"            OpHelp("r[P3]=r[P1]|r[P2]"),
     /*  85 */ "ShiftLeft"        OpHelp("r[P3]=r[P2]<<r[P1]"),
     /*  86 */ "ShiftRight"       OpHelp("r[P3]=r[P2]>>r[P1]"),
     /*  87 */ "Add"              OpHelp("r[P3]=r[P1]+r[P2]"),
     /*  88 */ "Subtract"         OpHelp("r[P3]=r[P2]-r[P1]"),
     /*  89 */ "Multiply"         OpHelp("r[P3]=r[P1]*r[P2]"),
     /*  90 */ "Divide"           OpHelp("r[P3]=r[P2]/r[P1]"),
     /*  91 */ "Remainder"        OpHelp("r[P3]=r[P2]%r[P1]"),
     /*  92 */ "Concat"           OpHelp("r[P3]=r[P2]+r[P1]"),
     /*  93 */ "SorterData"       OpHelp("r[P2]=data"),
     /*  94 */ "BitNot"           OpHelp("r[P1]= ~r[P1]"),
     /*  95 */ "String8"          OpHelp("r[P2]='P4'"),
     /*  96 */ "RowKey"           OpHelp("r[P2]=key"),
     /*  97 */ "RowData"          OpHelp("r[P2]=data"),
     /*  98 */ "Rowid"            OpHelp("r[P2]=rowid"),
     /*  99 */ "NullRow"          OpHelp(""),
     /* 100 */ "Last"             OpHelp(""),
     /* 101 */ "SorterSort"       OpHelp(""),
     /* 102 */ "Sort"             OpHelp(""),
     /* 103 */ "Rewind"           OpHelp(""),
     /* 104 */ "SorterInsert"     OpHelp(""),
     /* 105 */ "IdxInsert"        OpHelp("key=r[P2]"),
     /* 106 */ "IdxDelete"        OpHelp("key=r[P2@P3]"),
     /* 107 */ "IdxRowid"         OpHelp("r[P2]=rowid"),
     /* 108 */ "IdxLT"            OpHelp("key=r[P3@P4]"),
     /* 109 */ "IdxGE"            OpHelp("key=r[P3@P4]"),
     /* 110 */ "Destroy"          OpHelp(""),
     /* 111 */ "Clear"            OpHelp(""),
     /* 112 */ "CreateIndex"      OpHelp("r[P2]=root iDb=P1"),
     /* 113 */ "CreateTable"      OpHelp("r[P2]=root iDb=P1"),
     /* 114 */ "ParseSchema"      OpHelp(""),
     /* 115 */ "LoadAnalysis"     OpHelp(""),
     /* 116 */ "DropTable"        OpHelp(""),
     /* 117 */ "DropIndex"        OpHelp(""),
     /* 118 */ "DropTrigger"      OpHelp(""),
     /* 119 */ "IntegrityCk"      OpHelp(""),
     /* 120 */ "RowSetAdd"        OpHelp("rowset(P1)=r[P2]"),
     /* 121 */ "RowSetRead"       OpHelp("r[P3]=rowset(P1)"),
     /* 122 */ "RowSetTest"       OpHelp("if r[P3] in rowset(P1) goto P2"),
     /* 123 */ "Program"          OpHelp(""),
     /* 124 */ "Param"            OpHelp(""),
     /* 125 */ "FkCounter"        OpHelp("fkctr[P1]+=P2"),
     /* 126 */ "FkIfZero"         OpHelp("if fkctr[P1]==0 goto P2"),
     /* 127 */ "MemMax"           OpHelp("r[P1]=max(r[P1],r[P2])"),
     /* 128 */ "IfPos"            OpHelp("if r[P1]>0 goto P2"),
     /* 129 */ "IfNeg"            OpHelp("if r[P1]<0 goto P2"),
     /* 130 */ "IfZero"           OpHelp("r[P1]+=P3, if r[P1]==0 goto P2"),


     /* 131 */ "Real"             OpHelp("r[P2]=P4"),
     /* 132 */ "AggFinal"         OpHelp("accum=r[P1] N=P2"),
     /* 133 */ "IncrVacuum"       OpHelp(""),
     /* 134 */ "Expire"           OpHelp(""),
     /* 135 */ "TableLock"        OpHelp("iDb=P1 root=P2 write=P3"),
     /* 136 */ "VBegin"           OpHelp(""),
     /* 137 */ "VCreate"          OpHelp(""),
     /* 138 */ "VDestroy"         OpHelp(""),
     /* 139 */ "VOpen"            OpHelp(""),
     /* 140 */ "VColumn"          OpHelp("r[P3]=vcolumn(P2)"),
     /* 141 */ "VNext"            OpHelp(""),


     /* 142 */ "ToText"           OpHelp(""),
     /* 143 */ "ToBlob"           OpHelp(""),
     /* 144 */ "ToNumeric"        OpHelp(""),
     /* 145 */ "ToInt"            OpHelp(""),
     /* 146 */ "ToReal"           OpHelp(""),
     /* 147 */ "VRename"          OpHelp(""),
     /* 148 */ "Pagecount"        OpHelp(""),
     /* 149 */ "MaxPgcnt"         OpHelp(""),
     /* 150 */ "Trace"            OpHelp(""),
     /* 151 */ "Noop"             OpHelp(""),
     /* 152 */ "Explain"          OpHelp(""),
  };
  return azName[i];
}
#endif

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

  }else{
    pInode->nRef++;
  }
  *ppInode = pInode;
  return SQLITE_OK;
}

/*
** Return TRUE if pFile has been renamed or unlinked since it was first opened.
*/
static int fileHasMoved(unixFile *pFile){
  struct stat buf;
  return pFile->pInode!=0 &&
         (osStat(pFile->zPath, &buf)!=0 || buf.st_ino!=pFile->pInode->fileId.ino);
}


/*
** Check a unixFile that is a database.  Verify the following:
**
** (1) There is exactly one hard link on the file
** (2) The file is not a symbolic link
** (3) The file has not been renamed or unlinked

    return;
  }
  if( buf.st_nlink>1 ){
    sqlite3_log(SQLITE_WARNING, "multiple links to file: %s", pFile->zPath);
    pFile->ctrlFlags |= UNIXFILE_WARNED;
    return;
  }
  if( fileHasMoved(pFile) ){



    sqlite3_log(SQLITE_WARNING, "file renamed while open: %s", pFile->zPath);
    pFile->ctrlFlags |= UNIXFILE_WARNED;
    return;
  }
}

    case SQLITE_FCNTL_TEMPFILENAME: {
      char *zTFile = sqlite3_malloc( pFile->pVfs->mxPathname );
      if( zTFile ){
        unixGetTempname(pFile->pVfs->mxPathname, zTFile);
        *(char**)pArg = zTFile;
      }
      return SQLITE_OK;
    }
    case SQLITE_FCNTL_HAS_MOVED: {
      *(int*)pArg = fileHasMoved(pFile);
      return SQLITE_OK;
    }
#if SQLITE_MAX_MMAP_SIZE>0
    case SQLITE_FCNTL_MMAP_SIZE: {
      i64 newLimit = *(i64*)pArg;
      int rc = SQLITE_OK;
      if( newLimit>sqlite3GlobalConfig.mxMmap ){
        newLimit = sqlite3GlobalConfig.mxMmap;

    rc = (rc!=(-1)) ? SQLITE_OK : SQLITE_BUSY;
  }

  /* Update the global lock state and do debug tracing */
#ifdef SQLITE_DEBUG
  { u16 mask;
  OSTRACE(("SHM-LOCK "));
  mask = ofst>31 ? 0xffffffff : (1<<(ofst+n)) - (1<<ofst);
  if( rc==SQLITE_OK ){
    if( lockType==F_UNLCK ){
      OSTRACE(("unlock %d ok", ofst));
      pShmNode->exclMask &= ~mask;
      pShmNode->sharedMask &= ~mask;
    }else if( lockType==F_RDLCK ){
      OSTRACE(("read-lock %d ok", ofst));

** Make sure at least one set of Win32 APIs is available.
*/
#if !defined(SQLITE_WIN32_HAS_ANSI) && !defined(SQLITE_WIN32_HAS_WIDE)
#  error "At least one of SQLITE_WIN32_HAS_ANSI and SQLITE_WIN32_HAS_WIDE\
 must be defined."
#endif

/*
** Define the required Windows SDK version constants if they are not
** already available.
*/
#ifndef NTDDI_WIN8
#  define NTDDI_WIN8                        0x06020000
#endif

#ifndef NTDDI_WINBLUE
#  define NTDDI_WINBLUE                     0x06030000
#endif

/*
** Check if the GetVersionEx[AW] functions should be considered deprecated
** and avoid using them in that case.  It should be noted here that if the
** value of the SQLITE_WIN32_GETVERSIONEX pre-processor macro is zero
** (whether via this block or via being manually specified), that implies
** the underlying operating system will always be based on the Windows NT
** Kernel.
*/
#ifndef SQLITE_WIN32_GETVERSIONEX
#  if defined(NTDDI_VERSION) && NTDDI_VERSION >= NTDDI_WINBLUE
#    define SQLITE_WIN32_GETVERSIONEX   0
#  else
#    define SQLITE_WIN32_GETVERSIONEX   1
#  endif
#endif

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

  { "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) && \
        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
  { "GetVersionExW",           (SYSCALL)GetVersionExW,           0 },
#else
  { "GetVersionExW",           (SYSCALL)0,                       0 },
#endif

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

** Here is an interesting observation:  Win95, Win98, and WinME lack
** 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
# 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
  static int osIsNT(void){
    if( sqlite3_os_type==0 ){
#if defined(NTDDI_VERSION) && NTDDI_VERSION >= NTDDI_WIN8

  if( !pWinMemData ) return SQLITE_ERROR;
  assert( pWinMemData->magic1==WINMEM_MAGIC1 );
  assert( pWinMemData->magic2==WINMEM_MAGIC2 );

#if !SQLITE_OS_WINRT && SQLITE_WIN32_HEAP_CREATE
  if( !pWinMemData->hHeap ){

    DWORD dwInitialSize = SQLITE_WIN32_HEAP_INIT_SIZE;
    DWORD dwMaximumSize = (DWORD)sqlite3GlobalConfig.nHeap;
    if( dwMaximumSize==0 ){
      dwMaximumSize = SQLITE_WIN32_HEAP_MAX_SIZE;
    }else if( dwInitialSize>dwMaximumSize ){
      dwInitialSize = dwMaximumSize;
    }
    pWinMemData->hHeap = osHeapCreate(SQLITE_WIN32_HEAP_FLAGS,
                                      dwInitialSize, dwMaximumSize);
    if( !pWinMemData->hHeap ){
      sqlite3_log(SQLITE_NOMEM,
          "failed to HeapCreate (%lu), flags=%u, initSize=%lu, maxSize=%lu",
          osGetLastError(), SQLITE_WIN32_HEAP_FLAGS, dwInitialSize,

          dwMaximumSize);
      return SQLITE_NOMEM;
    }
    pWinMemData->bOwned = TRUE;
    assert( pWinMemData->bOwned );
  }
#else
  pWinMemData->hHeap = osGetProcessHeap();

    }
    case SQLITE_FCNTL_POWERSAFE_OVERWRITE: {
      winModeBit(pFile, WINFILE_PSOW, (int*)pArg);
      OSTRACE(("FCNTL file=%p, rc=SQLITE_OK\n", pFile->h));
      return SQLITE_OK;
    }
    case SQLITE_FCNTL_VFSNAME: {
      *(char**)pArg = sqlite3_mprintf("%s", pFile->pVfs->zName);
      OSTRACE(("FCNTL file=%p, rc=SQLITE_OK\n", pFile->h));
      return SQLITE_OK;
    }
    case SQLITE_FCNTL_WIN32_AV_RETRY: {
      int *a = (int*)pArg;
      if( a[0]>0 ){
        winIoerrRetry = a[0];

/****************************************************************************
**************************** sqlite3_vfs methods ****************************
**
** This division contains the implementation of methods on the
** sqlite3_vfs object.
*/

#if defined(__CYGWIN__)
/*
** Convert a filename from whatever the underlying operating system
** supports for filenames into UTF-8.  Space to hold the result is
** obtained from malloc and must be freed by the calling function.
*/
static char *winConvertToUtf8Filename(const void *zFilename){
  char *zConverted = 0;

                             "winGetTempname2", zDir);
        }
        if( winIsDir(zConverted) ){
          /* At this point, we know the candidate directory exists and should
          ** be used.  However, we may need to convert the string containing
          ** its name into UTF-8 (i.e. if it is UTF-16 right now).
          */

          char *zUtf8 = winConvertToUtf8Filename(zConverted);
          if( !zUtf8 ){
            sqlite3_free(zConverted);
            sqlite3_free(zBuf);
            OSTRACE(("TEMP-FILENAME rc=SQLITE_IOERR_NOMEM\n"));
            return SQLITE_IOERR_NOMEM;
          }
          sqlite3_snprintf(nMax, zBuf, "%s", zUtf8);
          sqlite3_free(zUtf8);
          sqlite3_free(zConverted);
          break;





        }
        sqlite3_free(zConverted);
      }
    }
  }
#elif !SQLITE_OS_WINRT && !defined(__CYGWIN__)
  else if( osIsNT() ){

    **       for converting the relative path name to an absolute
    **       one by prepending the data directory and a slash.
    */
    char *zOut = sqlite3MallocZero( pVfs->mxPathname+1 );
    if( !zOut ){
      return SQLITE_IOERR_NOMEM;
    }
    if( cygwin_conv_path(
            (osIsNT() ? CCP_POSIX_TO_WIN_W : CCP_POSIX_TO_WIN_A) |
            CCP_RELATIVE, zRelative, zOut, pVfs->mxPathname+1)<0 ){
      sqlite3_free(zOut);
      return winLogError(SQLITE_CANTOPEN_CONVPATH, (DWORD)errno,
                         "winFullPathname1", zRelative);
    }else{
      char *zUtf8 = winConvertToUtf8Filename(zOut);
      if( !zUtf8 ){
        sqlite3_free(zOut);
        return SQLITE_IOERR_NOMEM;
      }
      sqlite3_snprintf(MIN(nFull, pVfs->mxPathname), zFull, "%s%c%s",
                       sqlite3_data_directory, winGetDirSep(), zUtf8);
      sqlite3_free(zUtf8);
      sqlite3_free(zOut);
    }
  }else{
    char *zOut = sqlite3MallocZero( pVfs->mxPathname+1 );
    if( !zOut ){
      return SQLITE_IOERR_NOMEM;
    }
    if( cygwin_conv_path(
            (osIsNT() ? CCP_POSIX_TO_WIN_W : CCP_POSIX_TO_WIN_A),
            zRelative, zOut, pVfs->mxPathname+1)<0 ){
      sqlite3_free(zOut);
      return winLogError(SQLITE_CANTOPEN_CONVPATH, (DWORD)errno,
                         "winFullPathname2", zRelative);
    }else{
      char *zUtf8 = winConvertToUtf8Filename(zOut);
      if( !zUtf8 ){
        sqlite3_free(zOut);
        return SQLITE_IOERR_NOMEM;
      }
      sqlite3_snprintf(MIN(nFull, pVfs->mxPathname), zFull, "%s", zUtf8);
      sqlite3_free(zUtf8);
      sqlite3_free(zOut);
    }
  }
  return SQLITE_OK;
#endif

#if (SQLITE_OS_WINCE || SQLITE_OS_WINRT) && !defined(__CYGWIN__)
  SimulateIOError( return SQLITE_ERROR );

  /* pPager->szMmap = SQLITE_DEFAULT_MMAP_SIZE // will be set by btree.c */

  *ppPager = pPager;
  return SQLITE_OK;
}


/* Verify that the database file has not be deleted or renamed out from
** under the pager.  Return SQLITE_OK if the database is still were it ought
** to be on disk.  Return non-zero (SQLITE_READONLY_DBMOVED or some other error
** code from sqlite3OsAccess()) if the database has gone missing.
*/
static int databaseIsUnmoved(Pager *pPager){
  int bHasMoved = 0;
  int rc;

  if( pPager->tempFile ) return SQLITE_OK;
  if( pPager->dbSize==0 ) return SQLITE_OK;
  assert( pPager->zFilename && pPager->zFilename[0] );
  rc = sqlite3OsFileControl(pPager->fd, SQLITE_FCNTL_HAS_MOVED, &bHasMoved);
  if( rc==SQLITE_NOTFOUND ){
    /* If the HAS_MOVED file-control is unimplemented, assume that the file
    ** has not been moved.  That is the historical behavior of SQLite: prior to
    ** version 3.8.3, it never checked */
    rc = SQLITE_OK;
  }else if( rc==SQLITE_OK && bHasMoved ){
    rc = SQLITE_READONLY_DBMOVED;
  }
  return rc;
}


/*
** This function is called after transitioning from PAGER_UNLOCK to
** PAGER_SHARED state. It tests if there is a hot journal present in
** the file-system for the given pager. A hot journal is one that 
** needs to be played back. According to this function, a hot-journal
** file exists if the following criteria are met:

  }else{

    if( bMmapOk && pagerUseWal(pPager) ){
      rc = sqlite3WalFindFrame(pPager->pWal, pgno, &iFrame);
      if( rc!=SQLITE_OK ) goto pager_acquire_err;
    }

    if( bMmapOk && iFrame==0 ){
      void *pData = 0;

      rc = sqlite3OsFetch(pPager->fd, 
          (i64)(pgno-1) * pPager->pageSize, pPager->pageSize, &pData
      );

      if( rc==SQLITE_OK && pData ){

      }else{
        const int flags =                   /* VFS flags to open journal file */
          SQLITE_OPEN_READWRITE|SQLITE_OPEN_CREATE|
          (pPager->tempFile ? 
            (SQLITE_OPEN_DELETEONCLOSE|SQLITE_OPEN_TEMP_JOURNAL):
            (SQLITE_OPEN_MAIN_JOURNAL)
          );

        /* Verify that the database still has the same name as it did when
        ** it was originally opened. */
        rc = databaseIsUnmoved(pPager);
        if( rc==SQLITE_OK ){
#ifdef SQLITE_ENABLE_ATOMIC_WRITE
          rc = sqlite3JournalOpen(
              pVfs, pPager->zJournal, pPager->jfd, flags, jrnlBufferSize(pPager)
          );
#else
          rc = sqlite3OsOpen(pVfs, pPager->zJournal, pPager->jfd, flags, 0);
#endif
        }
      }
      assert( rc!=SQLITE_OK || isOpen(pPager->jfd) );
    }
  
  
    /* Write the first journal header to the journal file and open 
    ** the sub-journal if necessary.

  ** It is never called in the ERROR state.
  */
  assert( pPager->eState==PAGER_WRITER_LOCKED
       || pPager->eState==PAGER_WRITER_CACHEMOD
       || pPager->eState==PAGER_WRITER_DBMOD
  );
  assert( assert_pager_state(pPager) );



  assert( pPager->errCode==0 );



  assert( pPager->readOnly==0 );

  CHECK_PAGE(pPg);

  /* The journal file needs to be opened. Higher level routines have already
  ** obtained the necessary locks to begin the write-transaction, but the
  ** rollback journal might not yet be open. Open it now if this is the case.
  **

** as appropriate. Otherwise, SQLITE_OK.
*/
SQLITE_PRIVATE int sqlite3PagerWrite(DbPage *pDbPage){
  int rc = SQLITE_OK;

  PgHdr *pPg = pDbPage;
  Pager *pPager = pPg->pPager;


  assert( (pPg->flags & PGHDR_MMAP)==0 );
  assert( pPager->eState>=PAGER_WRITER_LOCKED );
  assert( pPager->eState!=PAGER_ERROR );
  assert( assert_pager_state(pPager) );

  if( pPager->sectorSize > (u32)pPager->pageSize ){
    Pgno nPageCount;          /* Total number of pages in database file */
    Pgno pg1;                 /* First page of the sector pPg is located on. */
    int nPage = 0;            /* Number of pages starting at pg1 to journal */
    int ii;                   /* Loop counter */
    int needSync = 0;         /* True if any page has PGHDR_NEED_SYNC */
    Pgno nPagePerSector = (pPager->sectorSize/pPager->pageSize);

    /* Set the doNotSpill NOSYNC bit to 1. This is because we cannot allow
    ** a journal header to be written between the pages journaled by
    ** this function.
    */
    assert( !MEMDB );
    assert( (pPager->doNotSpill & SPILLFLAG_NOSYNC)==0 );

  if( pKey ){
    assert( nKey==(i64)(int)nKey );
    pIdxKey = sqlite3VdbeAllocUnpackedRecord(
        pCur->pKeyInfo, aSpace, sizeof(aSpace), &pFree
    );
    if( pIdxKey==0 ) return SQLITE_NOMEM;
    sqlite3VdbeRecordUnpack(pCur->pKeyInfo, (int)nKey, pKey, pIdxKey);
    if( pIdxKey->nField==0 ){
      sqlite3DbFree(pCur->pKeyInfo->db, pFree);
      return SQLITE_CORRUPT_BKPT;
    }
  }else{
    pIdxKey = 0;
  }
  rc = sqlite3BtreeMovetoUnpacked(pCur, pIdxKey, nKey, bias, pRes);
  if( pFree ){
    sqlite3DbFree(pCur->pKeyInfo->db, pFree);
  }

  assert( sqlite3_mutex_held(pBt->mutex) );
  assert( bReadonly==PAGER_GET_READONLY || bReadonly==0 );

  if( pgno>btreePagecount(pBt) ){
    rc = SQLITE_CORRUPT_BKPT;
  }else{
    rc = btreeGetPage(pBt, pgno, ppPage, bReadonly);
    if( rc==SQLITE_OK && (*ppPage)->isInit==0 ){
      rc = btreeInitPage(*ppPage);
      if( rc!=SQLITE_OK ){
        releasePage(*ppPage);
      }
    }
  }

  }
  return rc;
}

/*
** Return a pointer to payload information from the entry that the 
** pCur cursor is pointing to.  The pointer is to the beginning of
** the key if index btrees (pPage->intKey==0) and is the data for
** table btrees (pPage->intKey==1). The number of bytes of available
** key/data is written into *pAmt.  If *pAmt==0, then the value
** returned will not be a valid pointer.
**
** This routine is an optimization.  It is common for the entire key
** and data to fit on the local page and for there to be no overflow
** pages.  When that is so, this routine can be used to access the
** key and data without making a copy.  If the key and/or data spills
** onto overflow pages, then accessPayload() must be used to reassemble
** the key/data and copy it into a preallocated buffer.
**
** The pointer returned by this routine looks directly into the cached
** page of the database.  The data might change or move the next time
** any btree routine is called.
*/
static const void *fetchPayload(
  BtCursor *pCur,      /* Cursor pointing to entry to read from */
  u32 *pAmt            /* Write the number of available bytes here */

){





  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( pCur->aiIdx[pCur->iPage]<pCur->apPage[pCur->iPage]->nCell );
  if( pCur->info.nSize==0 ){
    btreeParseCell(pCur->apPage[pCur->iPage], pCur->aiIdx[pCur->iPage],
                   &pCur->info);
  }











  *pAmt = pCur->info.nLocal;



  return (void*)(pCur->info.pCell + pCur->info.nHeader);
}


/*
** For the entry that cursor pCur is point to, return as
** many bytes of the key or data as are available on the local
** b-tree page.  Write the number of available bytes into *pAmt.
**
** The pointer returned is ephemeral.  The key/data may move
** or be destroyed on the next call to any Btree routine,
** including calls from other threads against the same cache.
** Hence, a mutex on the BtShared should be held prior to calling
** this routine.
**
** These routines is used to get quick access to key and data
** in the common case where no overflow pages are used.
*/
SQLITE_PRIVATE const void *sqlite3BtreeKeyFetch(BtCursor *pCur, u32 *pAmt){




  return fetchPayload(pCur, pAmt);
}


SQLITE_PRIVATE const void *sqlite3BtreeDataFetch(BtCursor *pCur, u32 *pAmt){




  return fetchPayload(pCur, pAmt);


}


/*
** Move the cursor down to a new child page.  The newPgno argument is the
** page number of the child page to move to.
**

** indicating a table b-tree, or if the caller did specify a KeyInfo 
** 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( 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;
    }
    sqlite3BtreeClearCursor(pCur);
  }

  if( pCur->iPage>=0 ){


    while( pCur->iPage ) releasePage(pCur->apPage[pCur->iPage--]);


  }else if( pCur->pgnoRoot==0 ){
    pCur->eState = CURSOR_INVALID;
    return SQLITE_OK;
  }else{
    rc = getAndInitPage(pCur->pBtree->pBt, pCur->pgnoRoot, &pCur->apPage[0],
                        pCur->wrFlag==0 ? PAGER_GET_READONLY : 0);
    if( rc!=SQLITE_OK ){
      pCur->eState = CURSOR_INVALID;
      return rc;
    }
    pCur->iPage = 0;

  assert( pRoot->isInit && (pCur->pKeyInfo==0)==pRoot->intKey );

  pCur->aiIdx[0] = 0;
  pCur->info.nSize = 0;
  pCur->atLast = 0;
  pCur->validNKey = 0;

  if( pRoot->nCell>0 ){
    pCur->eState = CURSOR_VALID;
  }else if( !pRoot->leaf ){
    Pgno subpage;
    if( pRoot->pgno!=1 ) return SQLITE_CORRUPT_BKPT;
    subpage = get4byte(&pRoot->aData[pRoot->hdrOffset+8]);
    pCur->eState = CURSOR_VALID;
    rc = moveToChild(pCur, subpage);
  }else{
    pCur->eState = CURSOR_INVALID;
  }
  return rc;
}

/*
** Move the cursor down to the left-most leaf entry beneath the
** entry to which it is currently pointing.

  if( pCur->eState==CURSOR_INVALID ){
    *pRes = -1;
    assert( pCur->pgnoRoot==0 || pCur->apPage[pCur->iPage]->nCell==0 );
    return SQLITE_OK;
  }
  assert( pCur->apPage[0]->intKey || pIdxKey );
  for(;;){
    int lwr, upr, idx, c;
    Pgno chldPg;
    MemPage *pPage = pCur->apPage[pCur->iPage];
    u8 *pCell;                          /* Pointer to current cell in pPage */

    /* pPage->nCell must be greater than zero. If this is the root-page
    ** the cursor would have been INVALID above and this for(;;) loop
    ** not run. If this is not the root-page, then the moveToChild() routine
    ** would have already detected db corruption. Similarly, pPage must
    ** be the right kind (index or table) of b-tree page. Otherwise
    ** a moveToChild() or moveToRoot() call would have detected corruption.  */
    assert( pPage->nCell>0 );
    assert( pPage->intKey==(pIdxKey==0) );
    lwr = 0;
    upr = pPage->nCell-1;
    assert( biasRight==0 || biasRight==1 );
    idx = upr>>(1-biasRight); /* idx = biasRight ? upr : (lwr+upr)/2; */

    pCur->aiIdx[pCur->iPage] = (u16)idx;

    if( pPage->intKey ){
      for(;;){

        i64 nCellKey;


        pCell = findCell(pPage, idx) + pPage->childPtrSize;


        if( pPage->hasData ){

          while( 0x80 <= *(pCell++) ){
            if( pCell>=pPage->aDataEnd ) return SQLITE_CORRUPT_BKPT;
          }
        }
        getVarint(pCell, (u64*)&nCellKey);
        if( nCellKey<intKey ){
          lwr = idx+1;
          if( lwr>upr ){ c = -1; break; }
        }else if( nCellKey>intKey ){
          upr = idx-1;
          if( lwr>upr ){ c = +1; break; }
        }else{
          assert( nCellKey==intKey );


          pCur->validNKey = 1;
          pCur->info.nKey = nCellKey;
          pCur->aiIdx[pCur->iPage] = (u16)idx;
          if( !pPage->leaf ){
            lwr = idx;
            goto moveto_next_layer;
          }else{
            *pRes = 0;
            rc = SQLITE_OK;
            goto moveto_finish;
          }
        }
        assert( lwr+upr>=0 );
        idx = (lwr+upr)>>1;  /* idx = (lwr+upr)/2; */
      }
    }else{
      for(;;){
        int nCell;
        pCell = findCell(pPage, idx) + pPage->childPtrSize;

        /* The maximum supported page-size is 65536 bytes. This means that
        ** the maximum number of record bytes stored on an index B-Tree
        ** page is less than 16384 bytes and may be stored as a 2-byte
        ** varint. This information is used to attempt to avoid parsing 
        ** the entire cell by checking for the cases where the record is 
        ** stored entirely within the b-tree page by inspecting the first 
        ** 2 bytes of the cell.
        */
        nCell = pCell[0];
        if( nCell<=pPage->max1bytePayload ){


          /* This branch runs if the record-size field of the cell is a
          ** single byte varint and the record fits entirely on the main
          ** b-tree page.  */
          testcase( pCell+nCell+1==pPage->aDataEnd );
          c = sqlite3VdbeRecordCompare(nCell, (void*)&pCell[1], pIdxKey);
        }else if( !(pCell[1] & 0x80) 
          && (nCell = ((nCell&0x7f)<<7) + pCell[1])<=pPage->maxLocal

        ){
          /* The record-size field is a 2 byte varint and the record 
          ** fits entirely on the main b-tree page.  */
          testcase( pCell+nCell+2==pPage->aDataEnd );
          c = sqlite3VdbeRecordCompare(nCell, (void*)&pCell[2], pIdxKey);
        }else{
          /* The record flows over onto one or more overflow pages. In
          ** this case the whole cell needs to be parsed, a buffer allocated
          ** and accessPayload() used to retrieve the record into the
          ** buffer before VdbeRecordCompare() can be called. */
          void *pCellKey;
          u8 * const pCellBody = pCell - pPage->childPtrSize;
          btreeParseCellPtr(pPage, pCellBody, &pCur->info);
          nCell = (int)pCur->info.nKey;
          pCellKey = sqlite3Malloc( nCell );
          if( pCellKey==0 ){
            rc = SQLITE_NOMEM;
            goto moveto_finish;
          }
          pCur->aiIdx[pCur->iPage] = (u16)idx;
          rc = accessPayload(pCur, 0, nCell, (unsigned char*)pCellKey, 0);
          if( rc ){
            sqlite3_free(pCellKey);
            goto moveto_finish;
          }
          c = sqlite3VdbeRecordCompare(nCell, pCellKey, pIdxKey);
          sqlite3_free(pCellKey);
        }

        if( c<0 ){

          lwr = idx+1;
        }else if( c>0 ){
          upr = idx-1;
        }else{
          assert( c==0 );
          *pRes = 0;
          rc = SQLITE_OK;
          pCur->aiIdx[pCur->iPage] = (u16)idx;
          goto moveto_finish;
        }






        if( lwr>upr ) break;

        assert( lwr+upr>=0 );
        idx = (lwr+upr)>>1;  /* idx = (lwr+upr)/2 */
      }

    }
    assert( lwr==upr+1 || (pPage->intKey && !pPage->leaf) );
    assert( pPage->isInit );
    if( pPage->leaf ){







      assert( pCur->aiIdx[pCur->iPage]<pCur->apPage[pCur->iPage]->nCell );
      pCur->aiIdx[pCur->iPage] = (u16)idx;
      *pRes = c;
      rc = SQLITE_OK;
      goto moveto_finish;
    }
moveto_next_layer:
    if( lwr>=pPage->nCell ){
      chldPg = get4byte(&pPage->aData[pPage->hdrOffset+8]);
    }else{
      chldPg = get4byte(findCell(pPage, lwr));
    }
    pCur->aiIdx[pCur->iPage] = (u16)lwr;


    rc = moveToChild(pCur, chldPg);
    if( rc ) break;
  }
moveto_finish:
  pCur->info.nSize = 0;
  pCur->validNKey = 0;
  return rc;
}


/*
** Return TRUE if the cursor is not pointing at an entry of the table.
**

  /* Fill in the header. */
  nHeader = 0;
  if( !pPage->leaf ){
    nHeader += 4;
  }
  if( pPage->hasData ){
    nHeader += putVarint32(&pCell[nHeader], nData+nZero);
  }else{
    nData = nZero = 0;
  }
  nHeader += putVarint(&pCell[nHeader], *(u64*)&nKey);
  btreeParseCellPtr(pPage, pCell, &info);
  assert( info.nHeader==nHeader );
  assert( info.nKey==nKey );

**
** "sz" must be the number of bytes in the cell.
*/
static void dropCell(MemPage *pPage, int idx, int sz, int *pRC){
  u32 pc;         /* Offset to cell content of cell being deleted */
  u8 *data;       /* pPage->aData */
  u8 *ptr;        /* Used to move bytes around within data[] */

  int rc;         /* The return code */
  int hdr;        /* Beginning of the header.  0 most pages.  100 page 1 */

  if( *pRC ) return;

  assert( idx>=0 && idx<pPage->nCell );
  assert( sz==cellSize(pPage, idx) );

    return;
  }
  rc = freeSpace(pPage, pc, sz);
  if( rc ){
    *pRC = rc;
    return;
  }






  pPage->nCell--;
  memmove(ptr, ptr+2, 2*(pPage->nCell - idx));
  put2byte(&data[hdr+3], pPage->nCell);
  pPage->nFree += 2;
}

/*
** Insert a new cell on pPage at cell index "i".  pCell points to the
** content of the cell.

){
  int idx = 0;      /* Where to write new cell content in data[] */
  int j;            /* Loop counter */
  int end;          /* First byte past the last cell pointer in data[] */
  int ins;          /* Index in data[] where new cell pointer is inserted */
  int cellOffset;   /* Address of first cell pointer in data[] */
  u8 *data;         /* The content of the whole page */



  int nSkip = (iChild ? 4 : 0);

  if( *pRC ) return;

  assert( i>=0 && i<=pPage->nCell+pPage->nOverflow );
  assert( pPage->nCell<=MX_CELL(pPage->pBt) && MX_CELL(pPage->pBt)<=10921 );
  assert( pPage->nOverflow<=ArraySize(pPage->apOvfl) );

    assert( idx+sz <= (int)pPage->pBt->usableSize );
    pPage->nCell++;
    pPage->nFree -= (u16)(2 + sz);
    memcpy(&data[idx+nSkip], pCell+nSkip, sz-nSkip);
    if( iChild ){
      put4byte(&data[idx], iChild);
    }

    memmove(&data[ins+2], &data[ins], end-ins);





    put2byte(&data[ins], idx);
    put2byte(&data[pPage->hdrOffset+3], pPage->nCell);
#ifndef SQLITE_OMIT_AUTOVACUUM
    if( pPage->pBt->autoVacuum ){
      /* The cell may contain a pointer to an overflow page. If so, write
      ** the entry for the overflow page into the pointer map.
      */

  pCheck->mxErr--;
  pCheck->nErr++;
  va_start(ap, zFormat);
  if( pCheck->errMsg.nChar ){
    sqlite3StrAccumAppend(&pCheck->errMsg, "\n", 1);
  }
  if( zMsg1 ){
    sqlite3StrAccumAppendAll(&pCheck->errMsg, zMsg1);
  }
  sqlite3VXPrintf(&pCheck->errMsg, 1, zFormat, ap);
  va_end(ap);
  if( pCheck->errMsg.accError==STRACCUM_NOMEM ){
    pCheck->mallocFailed = 1;
  }
}

    }else{
      pParse->db = pDb;
      if( sqlite3OpenTempDatabase(pParse) ){
        sqlite3Error(pErrorDb, pParse->rc, "%s", pParse->zErrMsg);
        rc = SQLITE_ERROR;
      }
      sqlite3DbFree(pErrorDb, pParse->zErrMsg);
      sqlite3ParserReset(pParse);
      sqlite3StackFree(pErrorDb, pParse);
    }
    if( rc ){
      return 0;
    }
  }

  assert(rc==SQLITE_NOMEM || pMem->enc==desiredEnc);
  return rc;
#endif
}

/*
** Make sure pMem->z points to a writable allocation of at least 
** min(n,32) bytes.
**
** If the bPreserve argument is true, then copy of the content of
** pMem->z into the new allocation.  pMem must be either a string or
** blob if bPreserve is true.  If bPreserve is false, any prior content
** in pMem->z is discarded.




*/
SQLITE_PRIVATE int sqlite3VdbeMemGrow(Mem *pMem, int n, int bPreserve){
  assert( 1 >=
    ((pMem->zMalloc && pMem->zMalloc==pMem->z) ? 1 : 0) +
    (((pMem->flags&MEM_Dyn)&&pMem->xDel) ? 1 : 0) + 
    ((pMem->flags&MEM_Ephem) ? 1 : 0) + 
    ((pMem->flags&MEM_Static) ? 1 : 0)
  );
  assert( (pMem->flags&MEM_RowSet)==0 );

  /* If the bPreserve flag is set to true, then the memory cell must already
  ** contain a valid string or blob value.  */
  assert( bPreserve==0 || pMem->flags&(MEM_Blob|MEM_Str) );
  testcase( bPreserve && pMem->z==0 );

  if( pMem->zMalloc==0 || sqlite3DbMallocSize(pMem->db, pMem->zMalloc)<n ){
    if( n<32 ) n = 32;

    if( bPreserve && pMem->z==pMem->zMalloc ){
      pMem->z = pMem->zMalloc = sqlite3DbReallocOrFree(pMem->db, pMem->z, n);
      bPreserve = 0;
    }else{
      sqlite3DbFree(pMem->db, pMem->zMalloc);
      pMem->zMalloc = sqlite3DbMallocRaw(pMem->db, n);
    }
    if( pMem->zMalloc==0 ){
      sqlite3VdbeMemRelease(pMem);
      pMem->flags = MEM_Null;  
      return SQLITE_NOMEM;
    }
  }

  if( pMem->z && bPreserve && pMem->z!=pMem->zMalloc ){
    memcpy(pMem->zMalloc, pMem->z, pMem->n);
  }
  if( (pMem->flags&MEM_Dyn)!=0 && pMem->xDel ){
    assert( pMem->xDel!=SQLITE_DYNAMIC );
    pMem->xDel((void *)(pMem->z));
  }

  pMem->z = pMem->zMalloc;



  pMem->flags &= ~(MEM_Ephem|MEM_Static);

  pMem->xDel = 0;
  return SQLITE_OK;
}

/*
** Make the given Mem object MEM_Dyn.  In other words, make it so
** that any TEXT or BLOB content is stored in memory obtained from
** malloc().  In this way, we know that the memory is safe to be
** overwritten or altered.

/*
** Release any memory held by the Mem. This may leave the Mem in an
** inconsistent state, for example with (Mem.z==0) and
** (Mem.type==SQLITE_TEXT).
*/
SQLITE_PRIVATE void sqlite3VdbeMemRelease(Mem *p){
  VdbeMemRelease(p);
  if( p->zMalloc ){
    sqlite3DbFree(p->db, p->zMalloc);

    p->zMalloc = 0;
  }
  p->z = 0;
  assert( p->xDel==0 );  /* Zeroed by VdbeMemRelease() above */
}

/*
** Convert a 64-bit IEEE double into a 64-bit signed integer.
** If the double is out of range of a 64-bit signed integer then
** return the closest available 64-bit signed integer.







*/
static i64 doubleToInt64(double r){
#ifdef SQLITE_OMIT_FLOATING_POINT
  /* When floating-point is omitted, double and int64 are the same thing */
  return r;
#else
  /*
  ** Many compilers we encounter do not define constants for the
  ** minimum and maximum 64-bit integers, or they define them
  ** inconsistently.  And many do not understand the "LL" notation.
  ** So we define our own static constants here using nothing
  ** larger than a 32-bit integer constant.
  */
  static const i64 maxInt = LARGEST_INT64;
  static const i64 minInt = SMALLEST_INT64;

  if( r<=(double)minInt ){
    return minInt;
  }else if( r>=(double)maxInt ){




    return maxInt;
  }else{
    return (i64)r;
  }
#endif
}

/*

  **
  **    (1) the round-trip conversion real->int->real is a no-op, and
  **    (2) The integer is neither the largest nor the smallest
  **        possible integer (ticket #3922)
  **
  ** The second and third terms in the following conditional enforces
  ** the second condition under the assumption that addition overflow causes
  ** values to wrap around.


  */
  if( pMem->r==(double)pMem->u.i
   && pMem->u.i>SMALLEST_INT64



   && pMem->u.i<LARGEST_INT64

  ){
    pMem->flags |= MEM_Int;
  }
}

/*
** Convert pMem to type integer.  Invalidate any prior representations.

** is overwritten without being freed.
**
** If this routine fails for any reason (malloc returns NULL or unable
** to read from the disk) then the pMem is left in an inconsistent state.
*/
SQLITE_PRIVATE int sqlite3VdbeMemFromBtree(
  BtCursor *pCur,   /* Cursor pointing at record to retrieve. */
  u32 offset,       /* Offset from the start of data to return bytes from. */
  u32 amt,          /* Number of bytes to return. */
  int key,          /* If true, retrieve from the btree key, not data. */
  Mem *pMem         /* OUT: Return data in this Mem structure. */
){
  char *zData;        /* Data from the btree layer */
  u32 available = 0;  /* Number of bytes available on the local btree page */
  int rc = SQLITE_OK; /* Return code */

  assert( sqlite3BtreeCursorIsValid(pCur) );

  /* Note: the calls to BtreeKeyFetch() and DataFetch() below assert() 
  ** that both the BtShared and database handle mutexes are held. */
  assert( (pMem->flags & MEM_RowSet)==0 );
  if( key ){
    zData = (char *)sqlite3BtreeKeyFetch(pCur, &available);
  }else{
    zData = (char *)sqlite3BtreeDataFetch(pCur, &available);
  }
  assert( zData!=0 );

  if( offset+amt<=available ){
    sqlite3VdbeMemRelease(pMem);
    pMem->z = &zData[offset];
    pMem->flags = MEM_Blob|MEM_Ephem;
  }else if( SQLITE_OK==(rc = sqlite3VdbeMemGrow(pMem, amt+2, 0)) ){
    pMem->flags = MEM_Blob|MEM_Dyn|MEM_Term;
    pMem->enc = 0;
    pMem->type = SQLITE_BLOB;
    if( key ){
      rc = sqlite3BtreeKey(pCur, offset, amt, pMem->z);
    }else{
      rc = sqlite3BtreeData(pCur, offset, amt, pMem->z);
    }
    pMem->z[amt] = 0;
    pMem->z[amt+1] = 0;
    if( rc!=SQLITE_OK ){
      sqlite3VdbeMemRelease(pMem);
    }
  }
  pMem->n = (int)amt;

  return rc;
}

/* This function is only available internally, it is not part of the
** external API. It works in a similar way to sqlite3_value_text(),
** except the data returned is in the encoding specified by the second

    if( pRec==0 ){
      Index *pIdx = p->pIdx;      /* Index being probed */
      int nByte;                  /* Bytes of space to allocate */
      int i;                      /* Counter variable */
      int nCol = pIdx->nColumn;   /* Number of index columns including rowid */
  
      nByte = sizeof(Mem) * nCol + ROUND8(sizeof(UnpackedRecord));
      pRec = (UnpackedRecord*)sqlite3DbMallocZero(db, nByte);
      if( pRec ){
        pRec->pKeyInfo = sqlite3KeyInfoOfIndex(p->pParse, pIdx);
        if( pRec->pKeyInfo ){
          assert( pRec->pKeyInfo->nField+pRec->pKeyInfo->nXField==nCol );
          assert( pRec->pKeyInfo->enc==ENC(db) );
          pRec->flags = UNPACKED_PREFIX_MATCH;
          pRec->aMem = (Mem *)((u8*)pRec + ROUND8(sizeof(UnpackedRecord)));
          for(i=0; i<nCol; i++){
            pRec->aMem[i].flags = MEM_Null;
            pRec->aMem[i].type = SQLITE_NULL;
            pRec->aMem[i].db = db;
          }
        }else{
          sqlite3DbFree(db, pRec);

  int rc = SQLITE_OK;

  if( !pExpr ){
    *ppVal = 0;
    return SQLITE_OK;
  }
  op = pExpr->op;








  if( NEVER(op==TK_REGISTER) ) op = pExpr->op2;


  /* Handle negative integers in a single step.  This is needed in the
  ** case when the value is -9223372036854775808.
  */
  if( op==TK_UMINUS
   && (pExpr->pLeft->op==TK_INTEGER || pExpr->pLeft->op==TK_FLOAT) ){
    pExpr = pExpr->pLeft;

  nRet = 1 + nSerial + nVal;
  aRet = sqlite3DbMallocRaw(db, nRet);
  if( aRet==0 ){
    sqlite3_result_error_nomem(context);
  }else{
    aRet[0] = nSerial+1;
    sqlite3PutVarint(&aRet[1], iSerial);
    sqlite3VdbeSerialPut(&aRet[1+nSerial], argv[0], iSerial);
    sqlite3_result_blob(context, aRet, nRet, SQLITE_TRANSIENT);
    sqlite3DbFree(db, aRet);
  }
}

/*
** Register built-in functions used to help read ANALYZE data.

  /* Skip over any TK_COLLATE nodes */
  pExpr = sqlite3ExprSkipCollate(pExpr);

  if( !pExpr ){
    pVal = valueNew(db, &alloc);
    if( pVal ){
      sqlite3VdbeMemSetNull((Mem*)pVal);

    }
  }else if( pExpr->op==TK_VARIABLE
        || NEVER(pExpr->op==TK_REGISTER && pExpr->op2==TK_VARIABLE)
  ){
    Vdbe *v;
    int iBindVar = pExpr->iColumn;
    sqlite3VdbeSetVarmask(pParse->pVdbe, iBindVar);
    if( (v = pParse->pReprepare)!=0 ){
      pVal = valueNew(db, &alloc);
      if( pVal ){
        rc = sqlite3VdbeMemCopy((Mem*)pVal, &v->aVar[iBindVar-1]);
        if( rc==SQLITE_OK ){
          sqlite3ValueApplyAffinity(pVal, affinity, ENC(db));
        }
        pVal->db = pParse->db;

        sqlite3VdbeMemStoreType((Mem*)pVal);
      }


    }
  }else{
    rc = valueFromExpr(db, pExpr, ENC(db), affinity, &pVal, &alloc);

  }
  *pbOk = (pVal!=0);

  assert( pVal==0 || pVal->db==db );
  return rc;
}

/*
** Unless it is NULL, the argument must be an UnpackedRecord object returned

  pB->pPrev = pTmp;
  zTmp = pA->zSql;
  pA->zSql = pB->zSql;
  pB->zSql = zTmp;
  pB->isPrepareV2 = pA->isPrepareV2;
}










/*
** Resize the Vdbe.aOp array so that it is at least one op larger than 
** it was.
**
** If an out-of-memory error occurs while resizing the array, return
** SQLITE_NOMEM. In this case Vdbe.aOp and Vdbe.nOpAlloc remain 
** unchanged (this is so that any opcodes already allocated can be 

        assert( pOp[-1].opcode==OP_Integer );
        n = pOp[-1].p1;
        if( n>nMaxArgs ) nMaxArgs = n;
        break;
      }
#endif
      case OP_Next:
      case OP_NextIfOpen:
      case OP_SorterNext: {
        pOp->p4.xAdvance = sqlite3BtreeNext;
        pOp->p4type = P4_ADVANCE;
        break;
      }
      case OP_Prev:
      case OP_PrevIfOpen: {
        pOp->p4.xAdvance = sqlite3BtreePrevious;
        pOp->p4type = P4_ADVANCE;
        break;
      }
    }

    pOp->opflags = sqlite3OpcodeProperty[opcode];

      zTemp[i++] = ')';
      zTemp[i] = 0;
      assert( i<nTemp );
      break;
    }
    case P4_COLLSEQ: {
      CollSeq *pColl = pOp->p4.pColl;
      sqlite3_snprintf(nTemp, zTemp, "(%.20s)", pColl->zName);
      break;
    }
    case P4_FUNCDEF: {
      FuncDef *pDef = pOp->p4.pFunc;
      sqlite3_snprintf(nTemp, zTemp, "%s(%d)", pDef->zName, pDef->nArg);
      break;
    }

#endif /* SQLITE_OMIT_EXPLAIN */

#ifdef SQLITE_DEBUG
/*
** Print the SQL that was used to generate a VDBE program.
*/
SQLITE_PRIVATE void sqlite3VdbePrintSql(Vdbe *p){
  const char *z = 0;
  if( p->zSql ){
    z = p->zSql;

  }else if( p->nOp>=1 ){
    const VdbeOp *pOp = &p->aOp[0];
    if( pOp->opcode==OP_Trace && pOp->p4.z!=0 ){
      z = pOp->p4.z;
      while( sqlite3Isspace(*z) ) z++;

    }
  }
  if( z ) printf("SQL: [%s]\n", z);
}
#endif

#if !defined(SQLITE_OMIT_TRACE) && defined(SQLITE_ENABLE_IOTRACE)
/*
** Print an IOTRACE message showing SQL content.
*/

    ** the call above. */
  }else if( pCx->pCursor ){
    sqlite3BtreeCloseCursor(pCx->pCursor);
  }
#ifndef SQLITE_OMIT_VIRTUALTABLE
  if( pCx->pVtabCursor ){
    sqlite3_vtab_cursor *pVtabCursor = pCx->pVtabCursor;
    const sqlite3_module *pModule = pVtabCursor->pVtab->pModule;
    p->inVtabMethod = 1;
    pModule->xClose(pVtabCursor);
    p->inVtabMethod = 0;
  }
#endif
}

    if( res!=0 ) return SQLITE_CORRUPT_BKPT;
    p->rowidIsValid = 1;
#ifdef SQLITE_TEST
    sqlite3_search_count++;
#endif
    p->deferredMoveto = 0;
    p->cacheStatus = CACHE_STALE;
  }else if( p->pCursor ){
    int hasMoved;
    int rc = sqlite3BtreeCursorHasMoved(p->pCursor, &hasMoved);
    if( rc ) return rc;
    if( hasMoved ){
      p->cacheStatus = CACHE_STALE;
      p->nullRow = 1;
    }

#endif

/*
** Write the serialized data blob for the value stored in pMem into 
** buf. It is assumed that the caller has allocated sufficient space.
** Return the number of bytes written.
**
** nBuf is the amount of space left in buf[].  The caller is responsible
** for allocating enough space to buf[] to hold the entire field, exclusive





** of the pMem->u.nZero bytes for a MEM_Zero value.
**
** Return the number of bytes actually written into buf[].  The number
** of bytes in the zero-filled tail is included in the return value only
** if those bytes were zeroed in buf[].
*/ 
SQLITE_PRIVATE u32 sqlite3VdbeSerialPut(u8 *buf, Mem *pMem, u32 serial_type){

  u32 len;

  /* Integer and Real */
  if( serial_type<=7 && serial_type>0 ){
    u64 v;
    u32 i;
    if( serial_type==7 ){
      assert( sizeof(v)==sizeof(pMem->r) );
      memcpy(&v, &pMem->r, sizeof(v));
      swapMixedEndianFloat(v);
    }else{
      v = pMem->u.i;
    }
    len = i = sqlite3VdbeSerialTypeLen(serial_type);

    while( i-- ){
      buf[i] = (u8)(v&0xFF);
      v >>= 8;
    }
    return len;
  }

  /* String or blob */
  if( serial_type>=12 ){
    assert( pMem->n + ((pMem->flags & MEM_Zero)?pMem->u.nZero:0)
             == (int)sqlite3VdbeSerialTypeLen(serial_type) );

    len = pMem->n;
    memcpy(buf, pMem->z, len);








    return len;
  }

  /* NULL or constants 0 or 1 */
  return 0;
}

    case 8:    /* Integer 0 */
    case 9: {  /* Integer 1 */
      pMem->u.i = serial_type-8;
      pMem->flags = MEM_Int;
      return 0;
    }
    default: {
      static const u16 aFlag[] = { MEM_Blob|MEM_Ephem, MEM_Str|MEM_Ephem };
      u32 len = (serial_type-12)/2;
      pMem->z = (char *)buf;
      pMem->n = len;
      pMem->xDel = 0;
      pMem->flags = aFlag[serial_type&1];




      return len;
    }
  }
  return 0;
}

/*

  ** impact, since this routine is a very high runner.  And so, we choose
  ** to ignore the compiler warnings and leave this variable uninitialized.
  */
  /*  mem1.u.i = 0;  // not needed, here to silence compiler warning */
  
  idx1 = getVarint32(aKey1, szHdr1);
  d1 = szHdr1;
  assert( pKeyInfo->nField+pKeyInfo->nXField>=pPKey2->nField || CORRUPT_DB );
  assert( pKeyInfo->aSortOrder!=0 );
  assert( pKeyInfo->nField>0 );
  assert( idx1<=szHdr1 || CORRUPT_DB );
  do{
    u32 serial_type1;

    /* Read the serial types for the next element in each key. */
    idx1 += getVarint32( aKey1+idx1, serial_type1 );

    /* Verify that there is enough key space remaining to avoid
    ** a buffer overread.  The "d1+serial_type1+2" subexpression will

      assert( mem1.zMalloc==0 );  /* See comment below */
      if( pKeyInfo->aSortOrder[i] ){
        rc = -rc;  /* Invert the result for DESC sort order. */
      }
      return rc;
    }
    i++;
  }while( idx1<szHdr1 && i<pPKey2->nField );

  /* No memory allocation is ever used on mem1.  Prove this using
  ** the following assert().  If the assert() fails, it indicates a
  ** memory leak and a need to call sqlite3VdbeMemRelease(&mem1).
  */
  assert( mem1.zMalloc==0 );

  assert( sqlite3BtreeCursorIsValid(pCur) );
  VVA_ONLY(rc =) sqlite3BtreeKeySize(pCur, &nCellKey);
  assert( rc==SQLITE_OK );     /* pCur is always valid so KeySize cannot fail */
  assert( (nCellKey & SQLITE_MAX_U32)==(u64)nCellKey );

  /* Read in the complete content of the index entry */
  memset(&m, 0, sizeof(m));
  rc = sqlite3VdbeMemFromBtree(pCur, 0, (u32)nCellKey, 1, &m);
  if( rc ){
    return rc;
  }

  /* The index entry must begin with a header size */
  (void)getVarint32((u8*)m.z, szHdr);
  testcase( szHdr==3 );

  /* nCellKey will always be between 0 and 0xffffffff because of the say
  ** that btreeParseCellPtr() and sqlite3GetVarint32() are implemented */
  if( nCellKey<=0 || nCellKey>0x7fffffff ){
    *res = 0;
    return SQLITE_CORRUPT_BKPT;
  }
  memset(&m, 0, sizeof(m));
  rc = sqlite3VdbeMemFromBtree(pC->pCursor, 0, (u32)nCellKey, 1, &m);
  if( rc ){
    return rc;
  }
  assert( pUnpacked->flags & UNPACKED_PREFIX_MATCH );
  *res = sqlite3VdbeRecordCompare(m.n, m.z, pUnpacked);
  sqlite3VdbeMemRelease(&m);
  return SQLITE_OK;

                      db->aLimit[SQLITE_LIMIT_LENGTH]);
  out.db = db;
  if( db->nVdbeExec>1 ){
    while( *zRawSql ){
      const char *zStart = zRawSql;
      while( *(zRawSql++)!='\n' && *zRawSql );
      sqlite3StrAccumAppend(&out, "-- ", 3);
      assert( (zRawSql - zStart) > 0 );
      sqlite3StrAccumAppend(&out, zStart, (int)(zRawSql-zStart));
    }
  }else{
    while( zRawSql[0] ){
      n = findNextHostParameter(zRawSql, &nToken);
      assert( n>0 );
      sqlite3StrAccumAppend(&out, zRawSql, n);

  ** cursor 1 is managed by memory cell (p->nMem-1), etc.
  */
  Mem *pMem = &p->aMem[p->nMem-iCur];

  int nByte;
  VdbeCursor *pCx = 0;
  nByte = 
      ROUND8(sizeof(VdbeCursor)) + 2*sizeof(u32)*nField + 
      (isBtreeCursor?sqlite3BtreeCursorSize():0);


  assert( iCur<p->nCursor );
  if( p->apCsr[iCur] ){
    sqlite3VdbeFreeCursor(p, p->apCsr[iCur]);
    p->apCsr[iCur] = 0;
  }
  if( SQLITE_OK==sqlite3VdbeMemGrow(pMem, nByte, 0) ){
    p->apCsr[iCur] = pCx = (VdbeCursor*)pMem->z;
    memset(pCx, 0, sizeof(VdbeCursor));
    pCx->iDb = iDb;
    pCx->nField = nField;



    if( isBtreeCursor ){
      pCx->pCursor = (BtCursor*)
          &pMem->z[ROUND8(sizeof(VdbeCursor))+2*sizeof(u32)*nField];
      sqlite3BtreeCursorZero(pCx->pCursor);
    }
  }
  return pCx;
}

/*

}
#endif

#ifdef SQLITE_DEBUG
/*
** Print the value of a register for tracing purposes:
*/
static void memTracePrint(Mem *p){
  if( p->flags & MEM_Invalid ){
    printf(" undefined");
  }else if( p->flags & MEM_Null ){
    printf(" NULL");
  }else if( (p->flags & (MEM_Int|MEM_Str))==(MEM_Int|MEM_Str) ){
    printf(" si:%lld", p->u.i);
  }else if( p->flags & MEM_Int ){
    printf(" i:%lld", p->u.i);
#ifndef SQLITE_OMIT_FLOATING_POINT
  }else if( p->flags & MEM_Real ){
    printf(" r:%g", p->r);
#endif
  }else if( p->flags & MEM_RowSet ){
    printf(" (rowset)");
  }else{
    char zBuf[200];
    sqlite3VdbeMemPrettyPrint(p, zBuf);

    printf(" %s", zBuf);
  }
}
static void registerTrace(int iReg, Mem *p){
  printf("REG[%d] = ", iReg);
  memTracePrint(p);
  printf("\n");
}
#endif

#ifdef SQLITE_DEBUG
#  define REGISTER_TRACE(R,M) if(db->flags&SQLITE_VdbeTrace)registerTrace(R,M)
#else
#  define REGISTER_TRACE(R,M)
#endif


#ifdef VDBE_PROFILE

  Mem *pOut = 0;             /* Output operand */
  int *aPermute = 0;         /* Permutation of columns for OP_Compare */
  i64 lastRowid = db->lastRowid;  /* Saved value of the last insert ROWID */
#ifdef VDBE_PROFILE
  u64 start;                 /* CPU clock count at start of opcode */
  int origPc;                /* Program counter at start of opcode */
#endif




































































































































































































































  /*** INSERT STACK UNION HERE ***/








































































































































































































  assert( p->magic==VDBE_MAGIC_RUN );  /* sqlite3_step() verifies this */
  sqlite3VdbeEnter(p);
  if( p->rc==SQLITE_NOMEM ){
    /* This happens if a malloc() inside a call to sqlite3_column_text() or
    ** sqlite3_column_text16() failed.  */
    goto no_mem;

    }else{
      nProgressLimit %= (unsigned)db->nProgressOps;
    }
  }
#endif
#ifdef SQLITE_DEBUG
  sqlite3BeginBenignMalloc();
  if( p->pc==0
   && (p->db->flags & (SQLITE_VdbeListing|SQLITE_VdbeEQP|SQLITE_VdbeTrace))!=0
  ){
    int i;
    int once = 1;
    sqlite3VdbePrintSql(p);
    if( p->db->flags & SQLITE_VdbeListing ){
      printf("VDBE Program Listing:\n");
      for(i=0; i<p->nOp; i++){
        sqlite3VdbePrintOp(stdout, i, &aOp[i]);
      }
    }
    if( p->db->flags & SQLITE_VdbeEQP ){
      for(i=0; i<p->nOp; i++){
        if( aOp[i].opcode==OP_Explain ){
          if( once ) printf("VDBE Query Plan:\n");
          printf("%s\n", aOp[i].p4.z);
          once = 0;
        }
      }
    }
    if( p->db->flags & SQLITE_VdbeTrace )  printf("VDBE Trace:\n");
  }
  sqlite3EndBenignMalloc();
#endif
  for(pc=p->pc; rc==SQLITE_OK; pc++){
    assert( pc>=0 && pc<p->nOp );
    if( db->mallocFailed ) goto no_mem;
#ifdef VDBE_PROFILE
    origPc = pc;
    start = sqlite3Hwtime();
#endif
    nVmStep++;
    pOp = &aOp[pc];

    /* Only allow tracing if SQLITE_DEBUG is defined.
    */
#ifdef SQLITE_DEBUG
    if( db->flags & SQLITE_VdbeTrace ){


      sqlite3VdbePrintOp(stdout, pc, pOp);


    }
#endif
      

    /* Check to see if we need to simulate an interrupt.  This only happens
    ** if we have a special test build.
    */

  /* Call the progress callback if it is configured and the required number
  ** of VDBE ops have been executed (either since this invocation of
  ** sqlite3VdbeExec() or since last time the progress callback was called).
  ** If the progress callback returns non-zero, exit the virtual machine with
  ** a return code SQLITE_ABORT.
  */
  if( db->xProgress!=0 && nVmStep>=nProgressLimit ){
    assert( db->nProgressOps!=0 );
    nProgressLimit = nVmStep + db->nProgressOps - (nVmStep%db->nProgressOps);
    if( db->xProgress(db->pProgressArg) ){

      rc = SQLITE_INTERRUPT;
      goto vdbe_error_halt;
    }



  }
#endif
  
  break;
}

/* Opcode:  Gosub P1 P2 * * *

}

/* Opcode:  Yield P1 * * * *
**
** Swap the program counter with the value in register P1.
*/
case OP_Yield: {            /* in1 */

  int pcDest;

  pIn1 = &aMem[pOp->p1];
  assert( (pIn1->flags & MEM_Dyn)==0 );
  pIn1->flags = MEM_Int;
  pcDest = (int)pIn1->u.i;
  pIn1->u.i = pc;
  REGISTER_TRACE(pOp->p1, pIn1);
  pc = pcDest;
  break;
}

/* Opcode:  HaltIfNull  P1 P2 P3 P4 P5
** Synopsis:  if r[P3] null then halt
**
** Check the value in register P3.  If it is NULL then Halt using

** omitted.
**
** There is an implied "Halt 0 0 0" instruction inserted at the very end of
** every program.  So a jump past the last instruction of the program
** is the same as executing Halt.
*/
case OP_Halt: {

  const char *zType;
  const char *zLogFmt;


  if( pOp->p1==SQLITE_OK && p->pFrame ){
    /* Halt the sub-program. Return control to the parent frame. */
    VdbeFrame *pFrame = p->pFrame;
    p->pFrame = pFrame->pParent;
    p->nFrame--;
    sqlite3VdbeSetChanges(db, p->nChange);
    pc = sqlite3VdbeFrameRestore(pFrame);
    lastRowid = db->lastRowid;
    if( pOp->p2==OE_Ignore ){
      /* Instruction pc is the OP_Program that invoked the sub-program 
      ** currently being halted. If the p2 instruction of this OP_Halt
      ** instruction is set to OE_Ignore, then the sub-program is throwing
      ** an IGNORE exception. In this case jump to the address specified
      ** as the p2 of the calling OP_Program.  */
      pc = p->aOp[pc].p2-1;
    }
    aOp = p->aOp;

      static const char * const azType[] = { "NOT NULL", "UNIQUE", "CHECK",
                                             "FOREIGN KEY" };
      assert( pOp->p5>=1 && pOp->p5<=4 );
      testcase( pOp->p5==1 );
      testcase( pOp->p5==2 );
      testcase( pOp->p5==3 );
      testcase( pOp->p5==4 );
      zType = azType[pOp->p5-1];
    }else{
      zType = 0;
    }
    assert( zType!=0 || pOp->p4.z!=0 );
    zLogFmt = "abort at %d in [%s]: %s";
    if( zType && pOp->p4.z ){
      sqlite3SetString(&p->zErrMsg, db, "%s constraint failed: %s", 
                       zType, pOp->p4.z);
    }else if( pOp->p4.z ){
      sqlite3SetString(&p->zErrMsg, db, "%s", pOp->p4.z);
    }else{
      sqlite3SetString(&p->zErrMsg, db, "%s constraint failed", zType);
    }
    sqlite3_log(pOp->p1, zLogFmt, pc, p->zSql, p->zErrMsg);
  }
  rc = sqlite3VdbeHalt(p);
  assert( rc==SQLITE_BUSY || rc==SQLITE_OK || rc==SQLITE_ERROR );
  if( rc==SQLITE_BUSY ){
    p->rc = rc = SQLITE_BUSY;
  }else{
    assert( rc==SQLITE_OK || (p->rc&0xff)==SQLITE_CONSTRAINT );

** set to NULL.
**
** If the P1 value is non-zero, then also set the MEM_Cleared flag so that
** NULL values will not compare equal even if SQLITE_NULLEQ is set on
** OP_Ne or OP_Eq.
*/
case OP_Null: {           /* out2-prerelease */

  int cnt;
  u16 nullFlag;

  cnt = pOp->p3-pOp->p2;
  assert( pOp->p3<=(p->nMem-p->nCursor) );
  pOut->flags = nullFlag = pOp->p1 ? (MEM_Null|MEM_Cleared) : MEM_Null;
  while( cnt>0 ){
    pOut++;
    memAboutToChange(p, pOut);
    VdbeMemRelease(pOut);
    pOut->flags = nullFlag;
    cnt--;
  }
  break;
}


/* Opcode: Blob P1 P2 * P4
** Synopsis: r[P2]=P4 (len=P1)