trunk/sqlite/nucleus/sqlite/sqlite.php

   1 <?php
   2     /***************************************
   3     * SQLite-MySQL wrapper for Nucleus     *
   4     *                           ver 0.8.5  *
   5     * Written by Katsumi                   *
   6     ***************************************/
   7 //
   8 //  The licence of this script is GPL
   9 //
  10 //                ACKOWLEDGMENT
  11 //
  12 //  I thank all the people of Nucleus JP forum
  13 //  who discussed this project. Especially, I
  14 //  thank kosugiatkips, mekyo, and nakahara21
  15 //  for ideas of some part of code.
  16 //  I also thank Jon Jensen for his generous
  17 //  acceptance for using his PHP code in this
  18 //  script.
  19 //
  20 //  The features that are supported by this script but not
  21 //  generally by SQLite are as follows:
  22 //
  23 //  CREATE TABLE IF NOT EXISTS, auto_increment,
  24 //  DROP TABLE IF EXISTS, ALTER TABLE,
  25 //  INSERT INTO ... SET xx=xx, xx=xx,
  26 //  REPLACE INTO ... SET xx=xx, xx=xx,
  27 //  SHOW KEYS FROM, SHOW INDEX FROM,
  28 //  SHOW FIELDS FROM, SHOW COLUMNS FROM,
  29 //  CREATE TABLE ... KEYS xxx (xxx,xxx)
  30 //  SHOW TABLES LIKE, TRUNCATE TABLE
  31 //  SHOW TABLES
  32 //
  33 // Release note:
  34 //  Version 0.8.0
  35 //    -This is the first established version and
  36 //     exactly the same as ver 0.7.8b.
  37 //
  38 //  Version 0.8.1
  39 //    -Execute "PRAGMA short_column_names=1" first.
  40 //    -Avoid executing outside php file in some very specfic environment.
  41 //    -Avoid executing multiple queries using ";" as delimer.
  42 //    -Add check routine for the installed SQLite
  43 //
  44 //  Version 0.8.5
  45 //    -Use SQLite_Functions class
  46 //    -'PRAGMA synchronous = off;' when installing
  47
  48 // Check SQLite installed
  49
  50 if (!function_exists('sqlite_open')) exit('Sorry, SQLite is not installed in the server.');
  51
  52 // Initializiation stuff
  53 require_once dirname(__FILE__) . '/sqliteconfig.php';
  54 $SQLITE_DBHANDLE=sqlite_open($SQLITECONF['DBFILENAME']);
  55 require_once dirname(__FILE__) . '/sqlitequeryfunctions.php';
  56 $SQLITECONF['VERSION']='0.8.5';
  57
  58 //Following thing may work if MySQL is NOT installed in server.
  59 if (!function_exists('mysql_query')) {
  60         define ("MYSQL_ASSOC", SQLITE_ASSOC);
  61         define ("MYSQL_BOTH", SQLITE_BOTH);
  62         define ("MYSQL_NUM", SQLITE_NUM);
  63         function mysql_connect(){
  64                 global $SQLITECONF;
  65                 $SQLITECONF['OVERRIDEMODE']=true;
  66                 $args=func_get_args();
  67                 return call_user_func_array('nucleus_mysql_connect',$args);
  68         }
  69         foreach (array('mysql_affected_rows','mysql_change_user','mysql_client_encoding','mysql_close',
  70                 'mysql_create_db','mysql_data_seek','mysql_db_name','mysql_db_query','mysql_drop_db','mysql_errno',
  71                 'mysql_error','mysql_escape_string','mysql_fetch_array','mysql_fetch_assoc','mysql_fetch_field','mysql_fetch_lengths',
  72                 'mysql_fetch_object','mysql_fetch_row','mysql_field_flags','mysql_field_len','mysql_field_name','mysql_field_seek',
  73                 'mysql_field_table','mysql_field_type','mysql_free_result','mysql_get_client_info','mysql_get_host_info',
  74                 'mysql_get_proto_info','mysql_get_server_info','mysql_info','mysql_insert_id','mysql_list_dbs',
  75                 'mysql_list_fields','mysql_list_processes','mysql_list_tables','mysql_num_fields','mysql_num_rows','mysql_numrows',
  76                 'mysql_pconnect','mysql_ping','mysql_query','mysql_real_escape_string','mysql_result','mysql_select_db',
  77                 'mysql_stat','mysql_tablename','mysql_thread_id','mysql_unbuffered_query')
  78                  as $value) eval(
  79                 "function $value(){\n".
  80                 "  \$args=func_get_args();\n".
  81                 "  return call_user_func_array('nucleus_$value',\$args);\n".
  82                 "}\n");
  83 }
  84
  85 // Empty object for mysql_fetch_object().
  86 class SQLITE_OBJECT {}
  87
  88 function sqlite_ReturnWithError($text='Not supported',$more=''){
  89         // Show warning when error_reporting() is set.
  90         if (!(error_reporting() & E_WARNING)) return false;
  91
  92         // Seek the file and line that originally called sql function.
  93         $a=debug_backtrace();
  94         foreach($a as $key=>$btrace) {
  95                 if (!($templine=$btrace['line'])) continue;
  96                 if (!($tempfile=$btrace['file'])) continue;
  97                 $file=str_replace("\\",'/',$file);
  98                 if (!$line && !$file && strpos($tempfile,'/sqlite.php')===false && strpos($tempfile,'/sqlitequeryfunctions.php')===false) {
  99                         $line=$templine;
 100                         $file=$tempfile;
 101                 }
 102                 echo "\n<!--$tempfile line:$templine-->\n";
 103         }
 104         echo "Warning from SQLite-MySQL wrapper: $text<br />\n";
 105         if ($line && $file) echo "in <b>$file</b> on line <b>$line</b><br />\n";
 106         echo $more;
 107         return false;
 108 }
 109 function sqlite_DebugMessage($text=''){
 110         global $SQLITECONF;
 111         if (!$SQLITECONF['DEBUGREPORT']) return;
 112         if ($text) $SQLITECONF['DEBUGMESSAGE'].="\n".$text."\n";
 113         if (headers_sent()) {
 114                 echo '<!--sqlite_DebugMessage'.$SQLITECONF['DEBUGMESSAGE'].'sqlite_DebugMessage-->';
 115                 unset($SQLITECONF['DEBUGMESSAGE']);
 116         }
 117 }
 118
 119 // nucleus_mysql_XXXX() functions follow.
 120
 121 function nucleus_mysql_connect($p1=null,$p2=null,$p3=null,$p4=null,$p5=null){
 122         // All prameters are ignored.
 123         global $SQLITE_DBHANDLE,$SQLITECONF;
 124         if (!$SQLITE_DBHANDLE) $SQLITE_DBHANDLE=sqlite_open($SQLITECONF['DBFILENAME']);
 125         // Initialization queries.
 126         foreach($SQLITECONF['INITIALIZE'] as $value) nucleus_mysql_query($value);
 127         return $SQLITE_DBHANDLE;
 128 }
 129
 130 function nucleus_mysql_close($p1=null){
 131         global $SQLITE_DBHANDLE;
 132         if (!($dbhandle=$p1)) $dbhandle=$SQLITE_DBHANDLE;
 133         $SQLITE_DBHANDLE='';
 134         return sqlite_close ($dbhandle);
 135 }
 136
 137 function nucleus_mysql_select_db($p1,$p2=null){
 138         // SQLite does not support multiple databases in a file.
 139         // So this function do nothing and always returns true.
 140         // Note: mysql_select_db() function returns true/false,
 141         // not link-ID.
 142         return true;
 143 }
 144
 145 function nucleus_mysql_query($p1,$p2=null,$unbuffered=false){//echo htmlspecialchars($p1)."<br />\n";
 146         global $SQLITE_DBHANDLE,$SQLITECONF;
 147         if (!($dbhandle=$p2)) $dbhandle=$SQLITE_DBHANDLE;
 148         $query=trim($p1);
 149         if (strpos($query,"\xEF\xBB\xBF")===0) $query=substr($query,3);// UTF-8 stuff
 150         if (substr($query,-1)==';') $query=substr($query,0,strlen($query)-1);
 151
 152         // Escape style is changed from MySQL type to SQLite type here.
 153         // This is important to avoid possible SQL-injection.
 154         $strpositions=array();// contains the data show where the strings are (startposition => endposition)
 155         if (strpos($query,'`')!==false || strpos($query,'"')!==false || strpos($query,"'")!==false)
 156                 $strpositions=sqlite_changeQuote($query);
 157         //echo "<br />".htmlspecialchars($p1)."<br /><br />\n".htmlspecialchars($query)."<hr />\n";
 158
 159         // Debug mode
 160         if ($SQLITECONF['DEBUGMODE']) $query=sqlite_mysql_query_debug($query);
 161
 162         // Anyway try it.
 163         if ($unbuffered) {
 164                 if ($ret=@sqlite_unbuffered_query($dbhandle,$query)) return $ret;
 165         } else {
 166                 if ($ret=@sqlite_query($dbhandle,$query)) return $ret;
 167         }
 168
 169         // Error occured. Query must be translated.
 170         return sqlite_mysql_query_sub($dbhandle,$query,$strpositions,$p1,$unbuffered);
 171 }
 172 function sqlite_mysql_query_sub($dbhandle,$query,$strpositions=array(),$p1=null,$unbuffered=false){//echo htmlspecialchars($p1)."<br />\n";
 173         // Query translation is needed, especially when changing the data in database.
 174         // So far, this routine is written for 'CREATE TABLE','DROP TABLE', 'INSERT INTO',
 175         // 'SHOW TABLES LIKE', 'SHOW KEYS FROM', 'SHOW INDEX FROM'
 176         // and several functions used in query.
 177         // How about 'UPDATE' ???
 178         global $SQLITE_DBHANDLE,$SQLITECONF;
 179         $beforetrans=time()+microtime();
 180         if (!$p1) $p1=$query;
 181         $morequeries=array();
 182         $uquery=strtoupper($query);
 183         if (strpos($uquery,'CREATE TABLE')===0 || ($temptable=(strpos($uquery,'CREATE TEMPORARY TABLE')===0))) {
 184                 if (!($i=strpos($query,'('))) return sqlite_ReturnWithError('nucleus_mysql_query: '.$p1);
 185                 //check if the command is 'CREATE TABLE IF NOT EXISTS'
 186                 if (strpos(strtoupper($uquery),'CREATE TABLE IF NOT EXISTS')===0) {
 187                         $tablename=trim(substr($query,26,$i-26));
 188                         if (substr($tablename,0,1)!="'") $tablename="'$tablename'";
 189                         $res=sqlite_query($dbhandle,"SELECT tbl_name FROM sqlite_master WHERE tbl_name=$tablename LIMIT 1");
 190                         if (nucleus_mysql_num_rows($res)) return true;
 191                 } else {
 192                         $tablename=trim(substr($query,12,$i-12));
 193                         if (substr($tablename,0,1)!="'") $tablename="'$tablename'";
 194                 }
 195
 196                 $query=trim(substr($query,$i+1));
 197                 for ($i=strlen($query);0<$i;$i--) if ($query[$i]==')') break;
 198                 $query=substr($query,0,$i);
 199                 $auto_increment=false;
 200                 $commands=sqlite_splitByComma($query);
 201                 $query=' (';
 202                 $first=true;
 203                 foreach($commands as $key => $value) {
 204                         if (strpos(strtolower($value),'auto_increment')==strlen($value)-14) $auto_increment=true;
 205                         $isint=preg_match('/int\(([0-9]*?)\)/i',$value);
 206                         $isint=$isint | preg_match('/tinyint\(([0-9]*?)\)/i',$value);
 207                         $value=preg_replace('/int\(([0-9]*?)\)[\s]+unsigned/i','int($1)',$value);
 208                         $value=preg_replace('/int\([0-9]*?\)[\s]+NOT NULL[\s]+auto_increment$/i',' INTEGER NOT NULL PRIMARY KEY',$value);
 209                         $value=preg_replace('/int\([0-9]*?\)[\s]+auto_increment$/i',' INTEGER PRIMARY KEY',$value);
 210                         if ($auto_increment) $value=preg_replace('/^PRIMARY KEY(.*?)$/i','',$value);
 211                         while (preg_match('/PRIMARY KEY[\s]*\((.*)\([0-9]+\)(.*)\)/i',$value)) // Remove '(100)' from 'PRIMARY KEY (`xxx` (100))'
 212                                 $value=preg_replace('/PRIMARY KEY[\s]*\((.*)\([0-9]+\)(.*)\)/i','PRIMARY KEY ($1 $2)',$value);
 213
 214                         // CREATE KEY queries for SQLite (corresponds to KEY 'xxxx'('xxxx', ...) of MySQL
 215                         if (preg_match('/^FULLTEXT KEY(.*?)$/i',$value,$matches)) {
 216                                 array_push($morequeries,'CREATE INDEX '.str_replace('('," ON $tablename (",$matches[1]));
 217                                 $value='';
 218                         } else if (preg_match('/^UNIQUE KEY(.*?)$/i',$value,$matches)) {
 219                                 array_push($morequeries,'CREATE UNIQUE INDEX '.str_replace('('," ON $tablename (",$matches[1]));
 220                                 $value='';
 221                         } else if (preg_match('/^KEY(.*?)$/i',$value,$matches)) {
 222                                 array_push($morequeries,'CREATE INDEX '.str_replace('('," ON $tablename (",$matches[1]));
 223                                 $value='';
 224                         }
 225
 226                         // Check if 'DEFAULT' is set when 'NOT NULL'
 227                         $uvalue=strtoupper($value);
 228                         if (strpos($uvalue,'NOT NULL')!==false &&
 229                                         strpos($uvalue,'DEFAULT')===false &&
 230                                         strpos($uvalue,'INTEGER NOT NULL PRIMARY KEY')===false) {
 231                                 if ($isint) $value.=" DEFAULT 0";
 232                                 else $value.=" DEFAULT ''";
 233                         }
 234
 235                         if ($value) {
 236                                 if ($first) $first=false;
 237                                 else $query.=',';
 238                                  $query.=' '.$value;
 239                         }
 240                 }
 241                 $query.=' )';
 242                 if ($temptable) $query='CREATE TEMPORARY TABLE '.$tablename.$query;
 243                 else $query='CREATE TABLE '.$tablename.$query;
 244                 //echo "<br />".htmlspecialchars($p1)."<br /><br />\n".htmlspecialchars($query)."<hr />\n";
 245         } else if (strpos($uquery,'DROP TABLE IF EXISTS')===0) {
 246                 if (!($i=strpos($query,';'))) $i=strlen($query);
 247                 $tablename=trim(substr($query,20,$i-20));
 248                 if (substr($tablename,0,1)!="'") $tablename="'$tablename'";
 249                 $res=sqlite_query($dbhandle,"SELECT tbl_name FROM sqlite_master WHERE tbl_name=$tablename LIMIT 1");
 250                 if (!nucleus_mysql_num_rows($res)) return true;
 251                 $query='DROP TABLE '.$tablename;
 252         } else if (strpos($uquery,'ALTER TABLE ')===0) {
 253                 $query=trim(substr($query,11));
 254                 if ($i=strpos($query,' ')) {
 255                         $tablename=trim(substr($query,0,$i));
 256                         $query=trim(substr($query,$i));
 257                         $ret =sqlite_altertable($tablename,$query,$dbhandle);
 258                         if (!$ret) sqlite_ReturnWithError('SQL error',"<br /><i>".nucleus_mysql_error()."</i><br />".htmlspecialchars($p1)."<br /><br />\n".htmlspecialchars("ALTER TABLE $tablename $query")."<hr />\n");
 259                         return $ret;
 260                 }
 261                 // Syntax error
 262                 $query=='DROP TABLE '.$query;
 263         } else if (strpos($uquery,'INSERT INTO ')===0 || strpos($uquery,'REPLACE INTO ')===0 ||
 264                         strpos($uquery,'INSERT IGNORE INTO ')===0 || strpos($uquery,'REPLACE IGNORE INTO ')===0) {
 265                 $buff=str_replace(' IGNORE ',' OR IGNORE ',substr($uquery,0,($i=strpos($uquery,' INTO ')+6)));
 266                 $query=trim(substr($query,$i));
 267                 if ($i=strpos($query,' ')) {
 268                         $buff.=trim(substr($query,0,$i+1));
 269                         $query=trim(substr($query,$i));
 270                 }
 271                 if ($i=strpos($query,' ')) {
 272                         if (strpos(strtoupper($query),'SET')===0) {
 273                                 $query=trim(substr($query,3));
 274                                 $commands=sqlite_splitByComma($query);
 275                                 $query=' VALUES(';
 276                                 $buff.=' (';
 277                                 foreach($commands as $key=>$value){
 278                                         //echo "[".htmlspecialchars($value)."]";
 279                                         if (0<$key) {
 280                                                 $buff.=', ';
 281                                                 $query.=', ';
 282                                         }
 283                                         if ($i=strpos($value,'=')) {
 284                                                 $buff.=trim(substr($value,0,$i));
 285                                                 $query.=substr($value,$i+1);
 286                                         }
 287                                 }
 288                                 $buff.=')';
 289                                 $query.=')';
 290                         } else {
 291                                 $beforevalues='';
 292                                 $commands=sqlite_splitByComma($query);
 293                                 $query='';
 294                                 foreach($commands as $key=>$value){
 295                                         if ($beforevalues=='' && preg_match('/^(.*)\)\s+VALUES\s+\(/i',$value,$matches)) {
 296                                                 $beforevalues=$buff.' '.$query.$matches[1].')';
 297                                         }
 298                                         if (0<$key) $query.=$beforevalues.' VALUES ';// supports multiple insertion
 299                                         $query.=$value.';';
 300                                 }
 301                         }
 302                 }
 303                 $query=$buff.' '.$query;
 304         } else if (strpos($uquery,'SHOW TABLES LIKE ')===0) {
 305                 $query='SELECT name FROM sqlite_master WHERE type=\'table\' AND name LIKE '.substr($query,17);
 306         } else if (strpos($uquery,'SHOW TABLES')===0) {
 307                 $query='SELECT name FROM sqlite_master WHERE type=\'table\'';
 308         } else if (strpos($uquery,'SHOW KEYS FROM ')===0) {
 309                 $query=sqlite_showKeysFrom(trim(substr($query,15)),$dbhandle);
 310         } else if (strpos($uquery,'SHOW INDEX FROM ')===0) {
 311                 $query=sqlite_showKeysFrom(trim(substr($query,16)),$dbhandle);
 312         } else if (strpos($uquery,'SHOW FIELDS FROM ')===0) {
 313                 $query=sqlite_showFieldsFrom(trim(substr($query,17)),$dbhandle);
 314         } else if (strpos($uquery,'SHOW COLUMNS FROM ')===0) {
 315                 $query=sqlite_showFieldsFrom(trim(substr($query,18)),$dbhandle);
 316         } else if (strpos($uquery,'TRUNCATE TABLE ')===0) {
 317                 $query='DELETE FROM '.substr($query,15);
 318         } else SQLite_Functions::sqlite_modifyQueryForUserFunc($query,$strpositions);
 319
 320         //Throw query again.
 321         $aftertrans=time()+microtime();
 322         if ($unbuffered) {
 323                 $ret=sqlite_unbuffered_query($dbhandle,$query);
 324         } else {
 325                 $ret=sqlite_query($dbhandle,$query);
 326         }
 327
 328         $afterquery=time()+microtime();
 329         if ($SQLITECONF['MEASURESPEED']) sqlite_DebugMessage("translated query:$query\n".
 330                 'translation: '.($aftertrans-$beforetrans).'sec, query: '.($afterquery-$aftertrans).'sec');
 331         if (!$ret) sqlite_ReturnWithError('SQL error',"<br /><i>".nucleus_mysql_error()."</i><br />".htmlspecialchars($p1)."<br /><br />\n".htmlspecialchars($query)."<hr />\n");
 332         foreach ($morequeries as $value) if ($value) @sqlite_query($dbhandle,$value);
 333         return $ret;
 334 }
 335 function sqlite_changeQuote(&$query){
 336         // This function is most important.
 337         // When you modify this function, do it very carefully.
 338         // Otherwise, you may allow crackers to do SQL-injection.
 339         // This function returns array that shows where the strings are.
 340         $sarray=array();
 341         $ret='';
 342         $qlen=strlen($query);
 343         for ($i=0;$i<$qlen;$i++) {
 344                 // Go to next quote
 345                 if (($i1=strpos($query,'"',$i))===false) $i1=$qlen;
 346                 if (($i2=strpos($query,"'",$i))===false) $i2=$qlen;
 347                 if (($i3=strpos($query,'`',$i))===false) $i3=$qlen;
 348                 if ($i1==$qlen && $i2==$qlen && $i3==$qlen) {
 349                         $ret.=($temp=substr($query,$i));
 350                         if (strstr($temp,';')) exit('Warning: try to use more than two queries?');
 351                         break;
 352                 }
 353                 if ($i2<($j=$i1)) $j=$i2;
 354                 if ($i3<$j) $j=$i3;
 355                 $ret.=($temp=substr($query,$i,$j-$i));
 356                 $c=$query[($i=$j)]; // $c keeps the type of quote.
 357                 if (strstr($temp,';')) exit('Warning: try to use more than two queries?');
 358
 359                 // Check between quotes.
 360                 // $j shows the begging positioin.
 361                 // $i will show the ending position.
 362                 $j=(++$i);
 363                 while ($i<$qlen) {
 364                         if (($i1=strpos($query,$c,$i))===false) $i1=$qlen;
 365                         if (($i2=strpos($query,"\\",$i))===false) $i2=$qlen;
 366                         if ($i2<$i1) {
 367                                 // \something. Skip two characters.
 368                                 $i=$i2+2;
 369                                 continue;
 370                         } if ($i1<($qlen-1) && $query[$i1+1]==$c) {
 371                                 // "", '' or ``.  Skip two characters.
 372                                 $i=$i1+2;
 373                                 continue;
 374                         } else {// OK. Reached the end position
 375                                 $i=$i1;
 376                                 break;
 377                         }
 378                 }
 379                 $i1=strlen($ret);
 380                 $ret.="'".sqlite_changeslashes(substr($query,$j,$i-$j));
 381                 if ($i<$qlen) $ret.="'"; //else Syntax error in query.
 382                 $i2=strlen($ret);
 383                 $sarray[$i1]=$i2;
 384         }//echo htmlspecialchars($query).'<br />'.htmlspecialchars($ret).'<br />';
 385         $query=$ret;
 386         return $sarray;
 387 }
 388 function sqlite_splitByComma($query) {
 389         // The query is splitted by comma and the data will be put into an array.
 390         // The commas in quoted strings are ignored.
 391         $commands=array();
 392         $i=0;
 393         $in=false;
 394         while ($query) {
 395                 if ($query[$i]=="'") {
 396                         $i++;
 397                         while ($i<strlen($query)) {
 398                                 if ($query[$i++]!="'") continue;
 399                                 if ($query[$i]!="'") break;
 400                                 $i++;
 401                         }
 402                         continue;
 403                 } else if ($query[$i]=='(') $in=true;
 404                 else if ($query[$i]==')') $in=false;
 405                 else if ($query[$i]==',' && (!$in)) {
 406                         $commands[]=trim(substr($query,0,$i));
 407                         $query=trim(substr($query,$i+1));
 408                         $i=0;
 409                         continue;
 410                 } // Do NOT add 'else' statement here! '$i++' is important in the following line.
 411                 if (strlen($query)<=($i++)) break;
 412         }
 413         if ($query) $commands[]=$query;
 414         return $commands;
 415 }
 416 function sqlite_changeslashes(&$text){
 417         // By SQLite, "''" is used in the quoted string instead of "\'".
 418         // In addition, only "'" seems to be allowed for perfect quotation of string.
 419         // This routine is used for the conversion from MySQL type to SQL type.
 420         // Do NOT use stripslashes() but use stripcslashes().  Otherwise, "\r\n" is not converted.
 421         if ($text==='') return '';
 422         return (sqlite_escape_string (stripcslashes((string)$text)));
 423 }
 424 function sqlite_altertable($table,$alterdefs,$dbhandle){
 425         // This function originaly came from Jon Jensen's PHP class, SQLiteDB.
 426         // There are some modifications by Katsumi.
 427         $table=str_replace("'",'',$table);
 428         if (!$alterdefs) return false;
 429         $result = sqlite_query($dbhandle,"SELECT sql,name,type FROM sqlite_master WHERE tbl_name = '".$table."' ORDER BY type DESC");
 430         if(!sqlite_num_rows($result)) return sqlite_ReturnWithError('no such table: '.$table);
 431         $row = sqlite_fetch_array($result); //table sql
 432         if (function_exists('microtime')) $tmpname='t'.str_replace('.','',str_replace(' ','',microtime()));
 433         else $tmpname = 't'.rand(0,999999).time();
 434         $origsql = trim(preg_replace("/[\s]+/"," ",str_replace(",",", ",preg_replace("/[\(]/","( ",$row['sql'],1))));
 435         $createtemptableSQL = 'CREATE TEMPORARY '.substr(trim(preg_replace("'".$table."'",$tmpname,$origsql,1)),6);
 436         $createindexsql = array();
 437         $i = 0;
 438         $defs = preg_split("/[,]+/",$alterdefs,-1,PREG_SPLIT_NO_EMPTY);
 439         $prevword = $table;
 440         $oldcols = preg_split("/[,]+/",substr(trim($createtemptableSQL),strpos(trim($createtemptableSQL),'(')+1),-1,PREG_SPLIT_NO_EMPTY);
 441         $newcols = array();
 442         for($i=0;$i<sizeof($oldcols);$i++){
 443                 $colparts = preg_split("/[\s]+/",$oldcols[$i],-1,PREG_SPLIT_NO_EMPTY);
 444                 $oldcols[$i] = $colparts[0];
 445                 $newcols[$colparts[0]] = $colparts[0];
 446         }
 447         $newcolumns = '';
 448         $oldcolumns = '';
 449         reset($newcols);
 450         while(list($key,$val) = each($newcols)){
 451                 if (strtoupper($val)!='PRIMARY' && strtoupper($key)!='PRIMARY' &&
 452                     strtoupper($val)!='UNIQUE'  && strtoupper($key)!='UNIQUE'){
 453                         $newcolumns .= ($newcolumns?', ':'').$val;
 454                         $oldcolumns .= ($oldcolumns?', ':'').$key;
 455                 }
 456         }
 457         $copytotempsql = 'INSERT INTO '.$tmpname.'('.$newcolumns.') SELECT '.$oldcolumns.' FROM '.$table;
 458         $dropoldsql = 'DROP TABLE '.$table;
 459         $createtesttableSQL = $createtemptableSQL;
 460         foreach($defs as $def){
 461                 $defparts = preg_split("/[\s]+/",$def,-1,PREG_SPLIT_NO_EMPTY);
 462                 $action = strtolower($defparts[0]);
 463                 switch($action){
 464                 case 'modify':
 465                         // Modification does not mean anything for SQLite, so just return true.
 466                         // But this command will be supported in future???
 467                         break;
 468                 case 'add':
 469                         if(($i=sizeof($defparts)) <= 2) return sqlite_ReturnWithError('near "'.$defparts[0].($defparts[1]?' '.$defparts[1]:'').'": syntax error');
 470
 471                         // ignore if there is already such table
 472                         $exists=false;
 473                         foreach($oldcols as $value) if (str_replace("'",'',$defparts[1])==str_replace("'",'',$value)) $exists=true;
 474                         if ($exists) break;
 475
 476                         // Ignore 'AFTER xxxx' statement.
 477                         // Maybe this feature will be supprted later.
 478                         if (4<=$i && strtoupper($defparts[$i-2])=='AFTER')
 479                                 unset($defparts[$i-1],$defparts[$i-2]);
 480
 481                         $createtesttableSQL = substr($createtesttableSQL,0,strlen($createtesttableSQL)-1).',';
 482                         for($i=1;$i<sizeof($defparts);$i++) $createtesttableSQL.=' '.$defparts[$i];
 483                         $createtesttableSQL.=')';
 484                         break;
 485                 case 'change':
 486                         if(sizeof($defparts) <= 3) return sqlite_ReturnWithError('near "'.$defparts[0].($defparts[1]?' '.$defparts[1]:'').($defparts[2]?' '.$defparts[2]:'').'": syntax error');
 487                         if($severpos = strpos($createtesttableSQL,' '.$defparts[1].' ')){
 488                                 if($newcols[$defparts[1]] != $defparts[1]){
 489                                         sqlite_ReturnWithError('unknown column "'.$defparts[1].'" in "'.$table.'"');
 490                                         return false;
 491                                 }
 492                                 $newcols[$defparts[1]] = $defparts[2];
 493                                 $nextcommapos = strpos($createtesttableSQL,',',$severpos);
 494                                 $insertval = '';
 495                                 for($i=2;$i<sizeof($defparts);$i++) $insertval.=' '.$defparts[$i];
 496                                 if($nextcommapos) $createtesttableSQL = substr($createtesttableSQL,0,$severpos).$insertval.substr($createtesttableSQL,$nextcommapos);
 497                                 else $createtesttableSQL = substr($createtesttableSQL,0,$severpos-(strpos($createtesttableSQL,',')?0:1)).$insertval.')';
 498                         } else  return sqlite_ReturnWithError('unknown column "'.$defparts[1].'" in "'.$table.'"');
 499                         break;
 500                 case 'drop':
 501                         if(sizeof($defparts) < 2) return sqlite_ReturnWithError('near "'.$defparts[0].($defparts[1]?' '.$defparts[1]:'').'": syntax error');
 502                         if($severpos = strpos($createtesttableSQL,' '.$defparts[1].' ')){
 503                                 $nextcommapos = strpos($createtesttableSQL,',',$severpos);
 504                                 if($nextcommapos) $createtesttableSQL = substr($createtesttableSQL,0,$severpos).substr($createtesttableSQL,$nextcommapos + 1);
 505                                 else $createtesttableSQL = substr($createtesttableSQL,0,$severpos-(strpos($createtesttableSQL,',')?0:1) - 1).')';
 506                                 unset($newcols[$defparts[1]]);
 507                         } else  return sqlite_ReturnWithError('unknown column "'.$defparts[1].'" in "'.$table.'"');
 508                         break;
 509                 default:
 510                         return sqlite_ReturnWithError('near "'.$prevword.'": syntax error');
 511                         break;
 512                 }
 513                 $prevword = $defparts[sizeof($defparts)-1];
 514         }
 515
 516         //this block of code generates a test table simply to verify that the columns specifed are valid in an sql statement
 517         //this ensures that no reserved words are used as columns, for example
 518         if (!sqlite_query($dbhandle,$createtesttableSQL)) return false;
 519         $droptempsql = 'DROP TABLE '.$tmpname;
 520         sqlite_query($dbhandle,$droptempsql);
 521         //end block
 522
 523         $createnewtableSQL = 'CREATE '.substr(trim(preg_replace("'".$tmpname."'",$table,$createtesttableSQL,1)),17);
 524         $newcolumns = '';
 525         $oldcolumns = '';
 526         reset($newcols);
 527         while(list($key,$val) = each($newcols)) {
 528                 if (strtoupper($val)!='PRIMARY' && strtoupper($key)!='PRIMARY' &&
 529                     strtoupper($val)!='UNIQUE'  && strtoupper($key)!='UNIQUE'){
 530                         $newcolumns .= ($newcolumns?', ':'').$val;
 531                         $oldcolumns .= ($oldcolumns?', ':'').$key;
 532                 }
 533         }
 534         $copytonewsql = 'INSERT INTO '.$table.'('.$newcolumns.') SELECT '.$oldcolumns.' FROM '.$tmpname;
 535
 536         sqlite_query($dbhandle,$createtemptableSQL); //create temp table
 537         sqlite_query($dbhandle,$copytotempsql); //copy to table
 538         sqlite_query($dbhandle,$dropoldsql); //drop old table
 539
 540         sqlite_query($dbhandle,$createnewtableSQL); //recreate original table
 541         sqlite_query($dbhandle,$copytonewsql); //copy back to original table
 542         sqlite_query($dbhandle,$droptempsql); //drop temp table
 543         return true;
 544 }
 545 function sqlite_showKeysFrom($tname,$dbhandle) {
 546         // This function is for supporing 'SHOW KEYS FROM' and 'SHOW INDEX FROM'.
 547         // For making the same result as obtained by MySQL, temporary table is made.
 548         $tname=str_replace("'",'',$tname);
 549
 550         // Create a temporary table for making result
 551         if (function_exists('microtime')) $tmpname='t'.str_replace('.','',str_replace(' ','',microtime()));
 552         else $tmpname = 't'.rand(0,999999).time();
 553         sqlite_query($dbhandle,"CREATE TEMPORARY TABLE $tmpname ('Table', 'Non_unique', 'Key_name', 'Seq_in_index',".
 554                 " 'Column_name', 'Collation', 'Cardinality', 'Sub_part', 'Packed', 'Null', 'Index_type', 'Comment')");
 555
 556         // First, get the sql query when the table created
 557         $res=sqlite_query($dbhandle,"SELECT sql FROM sqlite_master WHERE tbl_name = '$tname' ORDER BY type DESC");
 558         $a=nucleus_mysql_fetch_assoc($res);
 559         $tablesql=$a['sql'];
 560
 561         // Check if each columns are unique
 562         $notnull=array();
 563         foreach(sqlite_splitByComma(substr($tablesql,strpos($tablesql,'(')+1)) as $value) {
 564                 $name=str_replace("'",'',substr($value,0,strpos($value,' ')));
 565                 if (strpos(strtoupper($value),'NOT NULL')!==false) $notnull[$name]='';
 566                 else $notnull[$name]='YES';
 567         }
 568
 569         // Get the primary key (and check if it is unique???).
 570         if (preg_match('/[^a-zA-Z_\']([\S]+)[^a-zA-Z_\']+INTEGER NOT NULL PRIMARY KEY/i',$tablesql,$matches)) {
 571                 $pkey=str_replace("'",'',$matches[1]);
 572                 $pkeynull='';
 573         } else if (preg_match('/[^a-zA-Z_\']([\S]+)[^a-zA-Z_\']+INTEGER PRIMARY KEY/i',$tablesql,$matches)) {
 574                 $pkey=str_replace("'",'',$matches[1]);
 575                 $pkeynull='YES';
 576         } else if (preg_match('/PRIMARY KEY[\s]*?\(([^\)]+)\)/i',$tablesql,$matches)) {
 577                 $pkey=null;// PRIMARY KEY ('xxx'[,'xxx'])
 578                 foreach(explode(',',$matches[1]) as $key=>$value) {
 579                         $value=str_replace("'",'',trim($value));
 580                         $key++;
 581                         $cardinality=nucleus_mysql_num_rows(sqlite_query($dbhandle,"SELECT '$value' FROM '$tname'"));
 582                         sqlite_query($dbhandle,"INSERT INTO $tmpname ('Table', 'Non_unique', 'Key_name', 'Seq_in_index',".
 583                                 " 'Column_name', 'Collation', 'Cardinality', 'Sub_part', 'Packed', 'Null', 'Index_type', 'Comment')".
 584                                 " VALUES ('$tname', '0', 'PRIMARY', '$key',".
 585                                 " '$value', 'A', '$cardinality', null, null, '', 'BTREE', '')");
 586                 }
 587         } else $pkey=null;
 588
 589         // Check the index.
 590         $res=sqlite_query($dbhandle,"SELECT sql,name FROM sqlite_master WHERE type = 'index' and tbl_name = '$tname' ORDER BY type DESC");
 591         while ($a=nucleus_mysql_fetch_assoc($res)) {
 592                 if (!($sql=$a['sql'])) {// Primary key
 593                         if ($pkey && strpos(strtolower($a['name']),'autoindex')) {
 594                                 $cardinality=nucleus_mysql_num_rows(sqlite_query($dbhandle,"SELECT $pkey FROM '$tname'"));
 595                                 sqlite_query($dbhandle,"INSERT INTO $tmpname ('Table', 'Non_unique', 'Key_name', 'Seq_in_index',".
 596                                         " 'Column_name', 'Collation', 'Cardinality', 'Sub_part', 'Packed', 'Null', 'Index_type', 'Comment')".
 597                                         " VALUES ('$tname', '0', 'PRIMARY', '1',".
 598                                         " '$pkey', 'A', '$cardinality', null, null, '$pkeynull', 'BTREE', '')");
 599                                 $pkey=null;
 600                         }
 601                 } else {// Non-primary key
 602                         if (($name=str_replace("'",'',$a['name'])) && preg_match('/\(([\s\S]+)\)/',$sql,$matches)) {
 603                                 foreach(explode(',',$matches[1]) as $key=>$value) {
 604                                         $columnname=str_replace("'",'',$value);
 605                                         if (strpos(strtoupper($sql),'CREATE UNIQUE ')===0) $nonunique='0';
 606                                         else $nonunique='1';
 607                                         $cardinality=nucleus_mysql_num_rows(sqlite_query($dbhandle,"SELECT $columnname FROM '$tname'"));
 608                                         sqlite_query($dbhandle,"INSERT INTO $tmpname ('Table', 'Non_unique', 'Key_name', 'Seq_in_index',".
 609                                                 " 'Column_name', 'Collation', 'Cardinality', 'Sub_part', 'Packed', 'Null', 'Index_type', 'Comment')".
 610                                                 " VALUES ('$tname', '$nonunique', '$name', '".(string)($key+1)."',".
 611                                                 " '$columnname', 'A', '$cardinality', null, null, '$notnull[$columnname]', 'BTREE', '')");
 612                                 }
 613                         }
 614                 }
 615         }
 616         if ($pkey) { // The case that the key (index) is not defined.
 617                 $cardinality=nucleus_mysql_num_rows(sqlite_query($dbhandle,"SELECT $pkey FROM '$tname'"));
 618                 sqlite_query($dbhandle,"INSERT INTO $tmpname ('Table', 'Non_unique', 'Key_name', 'Seq_in_index',".
 619                         " 'Column_name', 'Collation', 'Cardinality', 'Sub_part', 'Packed', 'Null', 'Index_type', 'Comment')".
 620                         " VALUES ('$tname', '0', 'PRIMARY', '1',".
 621                         " '$pkey', 'A', '$cardinality', null, null, '$pkeynull', 'BTREE', '')");
 622                 $pkey=null;
 623         }
 624
 625         // return the final query to show the keys in MySQL style (using temporary table).
 626         return "SELECT * FROM $tmpname";
 627 }
 628 function sqlite_showFieldsFrom($tname,$dbhandle){
 629         // This function is for supporing 'SHOW FIELDS FROM' and 'SHOW COLUMNS FROM'.
 630         // For making the same result as obtained by MySQL, temporary table is made.
 631         $tname=str_replace("'",'',$tname);
 632
 633         // First, get the sql query when the table created
 634         $res=sqlite_query($dbhandle,"SELECT sql FROM sqlite_master WHERE tbl_name = '$tname' ORDER BY type DESC");
 635         $a=nucleus_mysql_fetch_assoc($res);
 636         $tablesql=trim($a['sql']);
 637         if (preg_match('/^[^\(]+\(([\s\S]*?)\)$/',$tablesql,$matches)) $tablesql=$matches[1];
 638         $tablearray=array();
 639         foreach(sqlite_splitByComma($tablesql) as $value) {
 640                 $value=trim($value);
 641                 if ($i=strpos($value,' ')) {
 642                         $name=str_replace("'",'',substr($value,0,$i));
 643                         $value=trim(substr($value,$i));
 644                         if (substr($value,-1)==',') $value=substr($value,strlen($value)-1);
 645                         $tablearray[$name]=$value;
 646                 }
 647         }
 648
 649         // Check if INDEX has been made for the parameter 'MUL' in 'KEY' column
 650         $multi=array();
 651         $res=sqlite_query($dbhandle,"SELECT name FROM sqlite_master WHERE type = 'index' and tbl_name = '$tname' ORDER BY type DESC");
 652         while ($a=nucleus_mysql_fetch_assoc($res)) $multi[str_replace("'",'',$a['name'])]='MUL';
 653
 654         // Create a temporary table for making result
 655         if (function_exists('microtime')) $tmpname='t'.str_replace('.','',str_replace(' ','',microtime()));
 656         else $tmpname = 't'.rand(0,999999).time();
 657         sqlite_query($dbhandle,"CREATE TEMPORARY TABLE $tmpname ('Field', 'Type', 'Null', 'Key', 'Default', 'Extra')");
 658
 659         // Check the table
 660         foreach($tablearray as $field=>$value) {
 661                 if (strtoupper($field)=='PRIMARY') continue;//PRIMARY KEY('xx'[,'xx'])
 662                 $uvalue=strtoupper($value.' ');
 663                 $key=(string)$multi[$field];
 664                 if ($uvalue=='INTEGER NOT NULL PRIMARY KEY ' || $uvalue=='INTEGER PRIMARY KEY ') {
 665                         $key='PRI';
 666                         $extra='auto_increment';
 667                 } else $extra='';
 668                 if ($i=strpos($uvalue,' ')) {
 669                         $type=substr($value,0,$i);
 670                         if (strpos($type,'(') && ($i=strpos($value,')')))
 671                                 $type=substr($value,0,$i+1);
 672                 } else $type='';
 673                 if (strtoupper($type)=='INTEGER') $type='int(11)';
 674                 if (strpos($uvalue,'NOT NULL')===false) $null='YES';
 675                 else {
 676                         $null='';
 677                         $value=preg_replace('/NOT NULL/i','',$value);
 678                         $uvalue=strtoupper($value);
 679                 }
 680                 if ($i=strpos($uvalue,'DEFAULT')) {
 681                         $default=trim(substr($value,$i+7));
 682                         if (strtoupper($default)=='NULL') {
 683                                 $default="";
 684                                 $setdefault="";
 685                         } else {
 686                                 if (substr($default,0,1)=="'") $default=substr($default,1,strlen($default)-2);
 687                                 $default="'".$default."',";
 688                                 $setdefault="'Default',";
 689                         }
 690                 } else if ($null!='YES' && $extra!='auto_increment') {
 691                         if (strpos(strtolower($type),'int')===false) $default="'',";
 692                         else $default="'0',";
 693                         $setdefault="'Default',";
 694                 } else {
 695                         $default="";
 696                         $setdefault="";
 697                 }
 698                 sqlite_query($dbhandle,"INSERT INTO '$tmpname' ('Field', 'Type', 'Null', 'Key', $setdefault 'Extra')".
 699                         " VALUES ('$field', '$type', '$null', '$key', $default '$extra')");
 700         }
 701
 702         // return the final query to show the keys in MySQL style (using temporary table).
 703         return "SELECT * FROM $tmpname";
 704 }
 705 function sqlite_mysql_query_debug(&$query){
 706         // The debug mode is so far used for checking query difference like "SELECT i.itime, ....".
 707         // This must be chaged to "SELECT i.itime as itime,..." for SQLite.
 708         // (This feature is not needed any more after the version 0.8.1 (see intialization query))
 709         $uquery=strtoupper($query);
 710         if (strpos($uquery,"SELECT ")!==0) return $query;
 711         if (($i=strpos($uquery," FROM "))===false) return $query;
 712         $select=sqlite_splitByComma(substr($query,7,$i-7));
 713         $query=substr($query,$i);
 714         $ret='';
 715         foreach($select as $value){
 716                 if (preg_match('/^([a-z_]+)\.([a-z_]+)$/i',$value,$matches)) {
 717                         $value=$value." as ".$matches[2];
 718                         $t=$matches[0]."=>$value\n";
 719                         $a=debug_backtrace();
 720                         foreach($a as $key=>$btrace) {
 721                                 if (!($templine=$btrace['line'])) continue;
 722                                 if (!($tempfile=$btrace['file'])) continue;
 723                                 $tempfile=preg_replace('/[\s\S]*?[\/\\\\]([^\/\\\\]+)$/','$1',$tempfile);
 724                                 $t.="$tempfile line:$templine\n";
 725                         }
 726                         sqlite_DebugMessage($t);
 727                 }
 728                 if ($ret) $ret.=', ';
 729                 $ret.=$value;
 730         }
 731         return "SELECT $ret $query";
 732 }
 733
 734 function nucleus_mysql_list_tables($p1=null,$p2=null) {
 735         global $SQLITE_DBHANDLE,$MYSQL_DATABASE;
 736         return sqlite_query($SQLITE_DBHANDLE,"SELECT name as Tables_in_$MYSQL_DATABASE FROM sqlite_master WHERE type='table'");
 737 }
 738 function nucleus_mysql_listtables($p1=null,$p2=null) { return nucleus_mysql_list_tables($p1,$p2);}
 739
 740 function nucleus_mysql_affected_rows($p1=null){
 741         global $SQLITE_DBHANDLE;
 742         if (!($dbhandle=$p1)) $dbhandle=$SQLITE_DBHANDLE;
 743         return sqlite_changes($dbhandle);
 744 }
 745
 746 function nucleus_mysql_error($p1=null){
 747         global $SQLITE_DBHANDLE;
 748         if (!($dbhandle=$p1)) $dbhandle=$SQLITE_DBHANDLE;
 749         return sqlite_error_string ( sqlite_last_error ($dbhandle) );
 750 }
 751
 752 function nucleus_mysql_fetch_array($p1,$p2=SQLITE_BOTH){
 753         return sqlite_fetch_array ($p1,$p2);
 754 }
 755
 756 function nucleus_mysql_fetch_assoc($p1){
 757         return sqlite_fetch_array($p1,SQLITE_ASSOC);
 758 }
 759
 760 function nucleus_mysql_fetch_object($p1,$p2=SQLITE_BOTH){
 761         if (is_array($ret=sqlite_fetch_array ($p1,$p2))) {
 762                 $o=new SQLITE_OBJECT;
 763                 foreach ($ret as $key=>$value) {
 764                         if (strstr($key,'.')) {// Remove table name.
 765                                 $key=preg_replace('/^(.+)\."(.+)"$/','"$2"',$key);
 766                                 $key=preg_replace('/^(.+)\.([^.^"]+)$/','$2',$key);
 767                         }
 768                         $o->$key=$value;
 769                 }
 770                 return $o;
 771         } else return false;
 772 }
 773
 774 function nucleus_mysql_fetch_row($p1){
 775         return sqlite_fetch_array($p1,SQLITE_NUM);
 776 }
 777
 778 function nucleus_mysql_field_name($p1,$p2){
 779         return sqlite_field_name ($p1,$p2);
 780 }
 781
 782 function nucleus_mysql_free_result($p1){
 783         // ???? Cannot find corresponding function of SQLite.
 784         // Maybe SQLite is NOT used for the high spec server
 785         // that need mysql_free_result() function because of
 786         // many SQL-queries in a script.
 787         return true;
 788 }
 789
 790 function nucleus_mysql_insert_id($p1=null){
 791         global $SQLITE_DBHANDLE;
 792         if (!($dbhandle=$p1)) $dbhandle=$SQLITE_DBHANDLE;
 793         return sqlite_last_insert_rowid ($dbhandle);
 794 }
 795
 796 function nucleus_mysql_num_fields($p1){
 797         return sqlite_num_fields ($p1);
 798 }
 799
 800 function nucleus_mysql_num_rows($p1){
 801         return sqlite_num_rows ($p1);
 802 }
 803 function nucleus_mysql_numrows($p1){
 804         return sqlite_num_rows ($p1);
 805 }
 806
 807 function nucleus_mysql_result($p1,$p2,$p3=null){
 808         if ($p3) return sqlite_ReturnWithError('nucleus_mysql_result');
 809         if (!$p2) return sqlite_fetch_single ($p1);
 810         $a=sqlite_fetch_array ($p1);
 811         return $a[$p2];
 812 }
 813
 814 function nucleus_mysql_unbuffered_query($p1,$p2=null){
 815         return nucleus_mysql_query($p1,$p2,true);
 816 }
 817
 818 function nucleus_mysql_client_encoding($p1=null){
 819         return sqlite_libencoding();
 820 }
 821
 822 function nucleus_mysql_data_seek($p1,$p2) {
 823         return sqlite_seek($p1,$p2);
 824 }
 825
 826 function nucleus_mysql_errno ($p1=null){
 827         global $SQLITE_DBHANDLE;
 828         if (!($dbhandle=$p1)) $dbhandle=$SQLITE_DBHANDLE;
 829         return sqlite_last_error($dbhandle);
 830 }
 831
 832 function nucleus_mysql_escape_string ($p1){
 833         // The "'" will be changed to "''".
 834         // This way works for both MySQL and SQLite when single quotes are used for string.
 835         // Note that single quote is always used in this wrapper.
 836         // If a plugin is made on SQLite-Nucleus and such plugin will be used for MySQL-Nucleus,
 837         // nucleus_mysql_escape_string() will be changed to mysql_escape_string() and
 838         // this routine won't be used, so this way won't be problem.
 839         return sqlite_escape_string($p1);
 840 }
 841
 842 function nucleus_mysql_real_escape_string ($p1,$p2=null){
 843         //addslashes used here.
 844         return addslashes($p1);
 845 }
 846
 847 function nucleus_mysql_create_db ($p1,$p2=null){
 848         // All prameters are ignored.
 849         // Returns always true;
 850         return true;
 851 }
 852
 853 function nucleus_mysql_pconnect($p1=null,$p2=null,$p3=null,$p4=null,$p5=null){
 854         global $SQLITE_DBHANDLE,$SQLITECONF;
 855         sqlite_close ($SQLITE_DBHANDLE);
 856         $SQLITE_DBHANDLE=sqlite_popen($SQLITECONF['DBFILENAME']);
 857         return ($SQLITE['DBHANDLE']=$SQLITE_DBHANDLE);
 858 }
 859
 860 function nucleus_mysql_fetch_field($p1,$p2=null){
 861         if ($p2) return sqlite_ReturnWithError('nucleus_mysql_fetch_field');
 862         // Only 'name' is supported.
 863         $o=new SQLITE_OBJECT;
 864         $o->name=array();
 865         if(is_array($ret=sqlite_fetch_array ($p1,SQLITE_ASSOC )))
 866                 foreach ($ret as $key=>$value) {
 867                         if (is_string($key)) array_push($o->name,$key);
 868                 }
 869         return $o;
 870
 871 }
 872
 873 // This function is called instead of _execute_queries() in backp.php
 874 function sqlite_restore_execute_queries(&$query){
 875         global $DIR_NUCLEUS,$DIR_LIBS,$DIR_PLUGINS,$CONF;
 876
 877         // Skip until the first "#" or "--"
 878         if (($i=strpos($query,"\n#"))===false) $i=strlen($query);
 879         if (($j=strpos($query,"\n--"))===false) $j=strlen($query);
 880         if ($i<$j) $query=substr($query,$i+1);
 881         else  $query=substr($query,$j+1);
 882
 883         // Save the query to temporary file in sqlite directory.
 884         if (function_exists('microtime')) {
 885                 $prefix=preg_replace('/[^0-9]/','',microtime());
 886         } else {
 887                 srand(time());
 888                 $prefix=(string)rand(0,999999);
 889         }
 890         $tmpname=tempnam($DIR_NUCLEUS.'sqlite/',"tmp$prefix");
 891         if (!($handle=@fopen($tmpname,'w'))) return 'Cannot save temporary DB file.';
 892         fwrite($handle,$query);
 893         fclose($handle);
 894         $tmpname=preg_replace('/[\s\S]*?[\/\\\\]([^\/\\\\]+)$/','$1',$tmpname);
 895
 896         // Read the option from NP_SQLite
 897         if (!class_exists('NucleusPlugin')) { include($DIR_LIBS.'PLUGIN.php');}
 898         if (!class_exists('NP_SQLite')) { include($DIR_PLUGINS.'NP_SQLite.php'); }
 899         $p=new NP_SQLite();
 900         if (!($numatonce=@$p->getOption('numatonce'))) $numatonce=20;
 901         if (!($refreshwait=@$p->getOption('refreshwait'))) $refreshwait=1;
 902
 903         // Start process.
 904         $url="plugins/sqlite/restore.php?dbfile=$tmpname&numatonce=$numatonce&refreshwait=$refreshwait";
 905         header('HTTP/1.0 301 Moved Permanently');
 906         header('Location: '.$url);
 907         exit('<html><body>Moved Permanently</body></html>');
 908 }
 909
 910 ?>