Fossil

  va_start(ap, zSql);
  blob_vappendf(&sql, zSql, ap);
  va_end(ap);
  z = blob_str(&sql);
  while( rc==SQLITE_OK && z[0] ){
    pStmt = 0;
    rc = sqlite3_prepare_v2(g.db, z, -1, &pStmt, &zEnd);
    if( rc ){
      db_err("%s: {%s}", sqlite3_errmsg(g.db), z);
    }else if( pStmt ){
      db.nPrepare++;
      while( sqlite3_step(pStmt)==SQLITE_ROW ){}
      rc = sqlite3_finalize(pStmt);
      if( rc ) db_err("%s: {%.*s}", sqlite3_errmsg(g.db), (int)(zEnd-z), z);
    }
    z = zEnd;
  }

**
** The companion full-text scan routine is search_fullscan().
*/
static void search_indexed(
  const char *zPattern,       /* The query pattern */
  unsigned int srchFlags      /* What to search over */
){
  Blob sql;
  if( srchFlags==0 ) return;
  sqlite3_create_function(g.db, "rank", 1, SQLITE_UTF8, 0,
     search_rank_sqlfunc, 0, 0);
  blob_init(&sql, 0, 0);
  blob_appendf(&sql,
    "INSERT INTO x(label,url,score,date,snip) "
    " SELECT ftsdocs.label,"
    "        ftsdocs.url,"
    "        rank(matchinfo(ftsidx,'pcsx')),"
    "        datetime(ftsdocs.mtime),"
    "        snippet(ftsidx)"
    "   FROM ftsidx, ftsdocs"
    "  WHERE ftsidx MATCH %Q"
    "    AND ftsdocs.rowid=ftsidx.docid",
    zPattern
  );
  if( srchFlags!=SRCH_ALL ){
    const char *zSep = " AND (";
    static const struct { unsigned m; char c; } aMask[] = {
       { SRCH_CKIN,  'c' },
       { SRCH_DOC,   'd' },
       { SRCH_TKT,   't' },
       { SRCH_WIKI,  'w' },
    };
    int i;
    for(i=0; i<ArraySize(aMask); i++){
      if( srchFlags & aMask[i].m ){
        blob_appendf(&sql, "%sftsdocs.type='%c'", zSep, aMask[i].c);
        zSep = " OR ";
      }
    }
    blob_append(&sql,")",1);
  }
  db_multi_exec("%s",blob_str(&sql)/*safe-for-%s*/);
#if SEARCH_DEBUG_RANK
  db_multi_exec("UPDATE x SET label=printf('%%s (score=%%s)',label,score)");
#endif
}


/*

  add_content_sql_commands(g.db);
  db_multi_exec(
    "CREATE TEMP TABLE x(label,url,score,date,snip);"
  );
  if( !search_index_exists() ){
    search_fullscan(zPattern, srchFlags);
  }else{
    search_update_index(srchFlags);
    search_indexed(zPattern, srchFlags);
  }
  db_prepare(&q, "SELECT url, snip, label"
                 "  FROM x"
                 " ORDER BY score DESC, date DESC;");
  while( db_step(&q)==SQLITE_ROW ){
    const char *zUrl = db_column_text(&q, 0);

/*
** Deal with all of the unindexed 'w' terms in FTSDOCS 
*/
static void search_update_wiki_index(void){
  db_multi_exec(
    "INSERT INTO ftsidx(docid,stext)"
    " SELECT rowid, stext('w',rid,NULL) FROM ftsdocs"
    "  WHERE type='w' AND NOT idxed;"
  );
  if( db_changes()==0 ) return;
  db_multi_exec(
    "REPLACE INTO ftsdocs(rowid,idxed,type,rid,name,label,url,mtime)"
    "  SELECT ftsdocs.rowid, 1, 'w', ftsdocs.rid, ftsdocs.name,"
    "    'Wiki: '||ftsdocs.name,"
    "    '/wiki?name='||urlencode(ftsdocs.name),"
    "    tagxref.mtime"
    "  FROM ftsdocs, tagxref"
    "  WHERE ftsdocs.type='w' AND NOT ftsdocs.idxed"
    "    AND tagxref.rid=ftsdocs.rid"
  );
}

/*
** Deal with all of the unindexed entries in the FTSDOCS table - that
** is to say, all the entries with FTSDOCS.IDXED=0.  Add them to the
** index.
*/
void search_update_index(unsigned int srchFlags){
  if( !search_index_exists() ) return;
  if( !db_exists("SELECT 1 FROM ftsdocs WHERE NOT idxed") ) return;
  search_sql_setup(g.db);
  if( srchFlags & (SRCH_CKIN|SRCH_DOC) ){
    search_update_doc_index();
    search_update_checkin_index();
  }
  if( srchFlags & SRCH_TKT ){
    search_update_ticket_index();
  }
  if( srchFlags & SRCH_WIKI ){
    search_update_wiki_index();
  }
}

/*
** COMMAND: test-fts
*/
void test_fts_cmd(void){
  char *zSubCmd;

           db_column_text(&q, 3)
        );
      }
      db_finalize(&q);
      break;
    }
    case 7: {  assert( fossil_strncmp(zSubCmd, "update", n)==0 );
      search_update_index(SRCH_ALL);
      break;
    }

  }
  db_end_transaction(0);
}