trunk/sqlite/nucleus/sqlite/sqlite.php

   1 <?php
   2     /***************************************
   3     * SQLite-MySQL wrapper for Nucleus     *
   4     *                           ver 0.8.1  *
   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 // Check SQLite installed
  45
  46 if (!function_exists('sqlite_open')) exit('Sorry, SQLite is not installed in the server.');
  47
  48 // Initializiation stuff
  49 require_once dirname(__FILE__) . '/sqliteconfig.php';
  50 $SQLITE_DBHANDLE=sqlite_open($SQLITECONF['DBFILENAME']);
  51 require_once dirname(__FILE__) . '/sqlitequeryfunctions.php';
  52 $SQLITECONF['VERSION']='0.8.1';
  53
  54 function sqlite_createQueryFunction($queryf,$globalf){
  55         global $SQLITE_DBHANDLE;
  56         if (function_exists($globalf)) sqlite_create_function($SQLITE_DBHANDLE,$queryf,$globalf);
  57 }
  58
  59 //Following thing may work if MySQL is NOT installed in server.
  60 if (!function_exists('mysql_query')) {
  61         define ("MYSQL_ASSOC", SQLITE_ASSOC);
  62         define ("MYSQL_BOTH", SQLITE_BOTH);
  63         define ("MYSQL_NUM", SQLITE_NUM);
  64         function mysql_connect(){
  65                 global $SQLITECONF;
  66                 $SQLITECONF['OVERRIDEMODE']=true;
  67                 $args=func_get_args();
  68                 return call_user_func_array('nucleus_mysql_connect',$args);
  69         }
  70         foreach (array('mysql_affected_rows','mysql_change_user','mysql_client_encoding','mysql_close',
  71                 'mysql_create_db','mysql_data_seek','mysql_db_name','mysql_db_query','mysql_drop_db','mysql_errno',
  72                 'mysql_error','mysql_escape_string','mysql_fetch_array','mysql_fetch_assoc','mysql_fetch_field','mysql_fetch_lengths',
  73                 'mysql_fetch_object','mysql_fetch_row','mysql_field_flags','mysql_field_len','mysql_field_name','mysql_field_seek',
  74                 'mysql_field_table','mysql_field_type','mysql_free_result','mysql_get_client_info','mysql_get_host_info',
  75                 'mysql_get_proto_info','mysql_get_server_info','mysql_info','mysql_insert_id','mysql_list_dbs',
  76                 'mysql_list_fields','mysql_list_processes','mysql_list_tables','mysql_num_fields','mysql_num_rows','mysql_numrows',
  77                 'mysql_pconnect','mysql_ping','mysql_query','mysql_real_escape_string','mysql_result','mysql_select_db',
  78                 'mysql_stat','mysql_tablename','mysql_thread_id','mysql_unbuffered_query')
  79                  as $value) eval(
  80                 "function $value(){\n".
  81                 "  \$args=func_get_args();\n".
  82                 "  return call_user_func_array('nucleus_$value',\$args);\n".
  83                 "}\n");
  84 }
  85
  86 // Empty object for mysql_fetch_object().
  87 class SQLITE_OBJECT {}
  88
  89 function sqlite_ReturnWithError($text='Not supported',$more=''){
  90         // Show warning when error_reporting() is set.
  91         if (!(error_reporting() & E_WARNING)) return false;
  92
  93         // Seek the file and line that originally called sql function.
  94         $a=debug_backtrace();
  95         foreach($a as $key=>$btrace) {
  96                 if (!($templine=$btrace['line'])) continue;
  97                 if (!($tempfile=$btrace['file'])) continue;
  98                 $file=str_replace("\\",'/',$file);
  99                 if (!$line && !$file && strpos($tempfile,'/sqlite.php')===false && strpos($tempfile,'/sqlitequeryfunctions.php')===false) {
 100                         $line=$templine;
 101                         $file=$tempfile;
 102                 }
 103                 echo "\n<!--$tempfile line:$templine-->\n";
 104         }
 105         echo "Warning from SQLite-MySQL wrapper: $text<br />\n";
 106         if ($line && $file) echo "in <b>$file</b> on line <b>$line</b><br />\n";
 107         echo $more;
 108         return false;
 109 }
 110 function sqlite_DebugMessage($text=''){
 111         global $SQLITECONF;
 112         if (!$SQLITECONF['DEBUGREPORT']) return;
 113         if ($text) $SQLITECONF['DEBUGMESSAGE'].="\n".$text."\n";
 114         if (headers_sent()) {
 115                 echo '<!--sqlite_DebugMessage'.$SQLITECONF['DEBUGMESSAGE'].'sqlite_DebugMessage-->';
 116                 unset($SQLITECONF['DEBUGMESSAGE']);
 117         }
 118 }
 119
 120 // nucleus_mysql_XXXX() functions follow.
 121
 122 function nucleus_mysql_connect($p1=null,$p2=null,$p3=null,$p4=null,$p5=null){
 123         // All prameters are ignored.
 124         global $SQLITE_DBHANDLE,$SQLITECONF;
 125         if (!$SQLITE_DBHANDLE) $SQLITE_DBHANDLE=sqlite_open($SQLITECONF['DBFILENAME']);
 126         // Initialization queries.
 127         foreach($SQLITECONF['INITIALIZE'] as $value) nucleus_mysql_query($value);
 128         return $SQLITE_DBHANDLE;
 129 }
 130
 131 function nucleus_mysql_close($p1=null){
 132         global $SQLITE_DBHANDLE;
 133         if (!($dbhandle=$p1)) $dbhandle=$SQLITE_DBHANDLE;
 134         $SQLITE_DBHANDLE='';
 135         return sqlite_close ($dbhandle);
 136 }
 137
 138 function nucleus_mysql_select_db($p1,$p2=null){
 139         // SQLite does not support multiple databases in a file.
 140         // So this function do nothing and always returns true.
 141         // Note: mysql_select_db() function returns true/false,
 142         // not link-ID.
 143         return true;
 144 }
 145
 146 function nucleus_mysql_query($p1,$p2=null,$unbuffered=false){//echo htmlspecialchars($p1)."<br />\n";
 147         global $SQLITE_DBHANDLE,$SQLITECONF;
 148         if (!($dbhandle=$p2)) $dbhandle=$SQLITE_DBHANDLE;
 149         $query=trim($p1);
 150         if (strpos($query,"\xEF\xBB\xBF")===0) $query=substr($query,3);// UTF-8 stuff
 151         if (substr($query,-1)==';') $query=substr($query,0,strlen($query)-1);
 152
 153         // Escape style is changed from MySQL type to SQLite type here.
 154         // This is important to avoid possible SQL-injection.
 155         $strpositions=array();// contains the data show where the strings are (startposition => endposition)
 156         if (strpos($query,'`')!==false || strpos($query,'"')!==false || strpos($query,"'")!==false)
 157                 $strpositions=sqlite_changeQuote($query);
 158         //echo "<br />".htmlspecialchars($p1)."<br /><br />\n".htmlspecialchars($query)."<hr />\n";
 159
 160         // Debug mode
 161         if ($SQLITECONF['DEBUGMODE']) $query=sqlite_mysql_query_debug($query);
 162
 163         // Anyway try it.
 164         if ($unbuffered) {
 165                 if ($ret=@sqlite_unbuffered_query($dbhandle,$query)) return $ret;
 166         } else {
 167                 if ($ret=@sqlite_query($dbhandle,$query)) return $ret;
 168         }
 169
 170         // Error occured. Query must be translated.
 171         return sqlite_mysql_query_sub($dbhandle,$query,$strpositions,$p1,$unbuffered);
 172 }
 173 function sqlite_mysql_query_sub($dbhandle,$query,$strpositions=array(),$p1=null,$unbuffered=false){//echo htmlspecialchars($p1)."<br />\n";
 174         // Query translation is needed, especially when changing the data in database.
 175         // So far, this routine is written for 'CREATE TABLE','DROP TABLE', 'INSERT INTO',
 176         // 'SHOW TABLES LIKE', 'SHOW KEYS FROM', 'SHOW INDEX FROM'
 177         // and several functions used in query.
 178         // How about 'UPDATE' ???
 179         global $SQLITE_DBHANDLE,$SQLITECONF;
 180         $beforetrans=time()+microtime();
 181         if (!$p1) $p1=$query;
 182         $morequeries=array();
 183         $uquery=strtoupper($query);
 184         if (strpos($uquery,'CREATE TABLE')===0 || ($temptable=(strpos($uquery,'CREATE TEMPORARY TABLE')===0))) {
 185                 if (!($i=strpos($query,'('))) return sqlite_ReturnWithError('nucleus_mysql_query: '.$p1);
 186                 //check if the command is 'CREATE TABLE IF NOT EXISTS'
 187                 if (strpos(strtoupper($uquery),'CREATE TABLE IF NOT EXISTS')===0) {
 188                         $tablename=trim(substr($query,26,$i-26));
 189                         if (substr($tablename,0,1)!="'") $tablename="'$tablename'";
 190                         $res=sqlite_query($dbhandle,"SELECT tbl_name FROM sqlite_master WHERE tbl_name=$tablename LIMIT 1");
 191                         if (nucleus_mysql_num_rows($res)) return true;
 192                 } else {
 193                         $tablename=trim(substr($query,12,$i-12));
 194                         if (substr($tablename,0,1)!="'") $tablename="'$tablename'";
 195                 }
 196
 197                 $query=trim(substr($query,$i+1));
 198                 for ($i=strlen($query);0<$i;$i--) if ($query[$i]==')') break;
 199                 $query=substr($query,0,$i);
 200                 $auto_increment=false;
 201                 $commands=sqlite_splitByComma($query);
 202                 $query=' (';
 203                 $first=true;
 204                 foreach($commands as $key => $value) {
 205                         if (strpos(strtolower($value),'auto_increment')==strlen($value)-14) $auto_increment=true;
 206                         $isint=preg_match('/int\(([0-9]*?)\)/i',$value);
 207                         $isint=$isint | preg_match('/tinyint\(([0-9]*?)\)/i',$value);
 208                         $value=preg_replace('/int\(([0-9]*?)\)[\s]+unsigned/i','int($1)',$value);
 209                         $value=preg_replace('/int\([0-9]*?\)[\s]+NOT NULL[\s]+auto_increment$/i',' INTEGER NOT NULL PRIMARY KEY',$value);
 210                         $value=preg_replace('/int\([0-9]*?\)[\s]+auto_increment$/i',' INTEGER PRIMARY KEY',$value);
 211                         if ($auto_increment) $value=preg_replace('/^PRIMARY KEY(.*?)$/i','',$value);
 212                         while (preg_match('/PRIMARY KEY[\s]*\((.*)\([0-9]+\)(.*)\)/i',$value)) // Remove '(100)' from 'PRIMARY KEY (`xxx` (100))'
 213                                 $value=preg_replace('/PRIMARY KEY[\s]*\((.*)\([0-9]+\)(.*)\)/i','PRIMARY KEY ($1 $2)',$value);
 214
 215                         // CREATE KEY queries for SQLite (corresponds to KEY 'xxxx'('xxxx', ...) of MySQL
 216                         if (preg_match('/^FULLTEXT KEY(.*?)$/i',$value,$matches)) {
 217                                 array_push($morequeries,'CREATE INDEX '.str_replace('('," ON $tablename (",$matches[1]));
 218                                 $value='';
 219                         } else if (preg_match('/^UNIQUE KEY(.*?)$/i',$value,$matches)) {
 220                                 array_push($morequeries,'CREATE UNIQUE INDEX '.str_replace('('," ON $tablename (",$matches[1]));
 221                                 $value='';
 222                         } else if (preg_match('/^KEY(.*?)$/i',$value,$matches)) {
 223                                 array_push($morequeries,'CREATE INDEX '.str_replace('('," ON $tablename (",$matches[1]));
 224                                 $value='';
 225                         }
 226
 227                         // Check if 'DEFAULT' is set when 'NOT NULL'
 228                         $uvalue=strtoupper($value);
 229                         if (strpos($uvalue,'NOT NULL')!==false &&
 230                                         strpos($uvalue,'DEFAULT')===false &&
 231                                         strpos($uvalue,'INTEGER NOT NULL PRIMARY KEY')===false) {
 232                                 if ($isint) $value.=" DEFAULT 0";
 233                                 else $value.=" DEFAULT ''";
 234                         }
 235
 236                         if ($value) {
 237                                 if ($first) $first=false;
 238                                 else $query.=',';
 239                                  $query.=' '.$value;
 240                         }
 241                 }
 242                 $query.=' )';
 243                 if ($temptable) $query='CREATE TEMPORARY TABLE '.$tablename.$query;
 244                 else $query='CREATE TABLE '.$tablename.$query;
 245                 //echo "<br />".htmlspecialchars($p1)."<br /><br />\n".htmlspecialchars($query)."<hr />\n";
 246         } else if (strpos($uquery,'DROP TABLE IF EXISTS')===0) {
 247                 if (!($i=strpos($query,';'))) $i=strlen($query);
 248                 $tablename=trim(substr($query,20,$i-20));
 249                 if (substr($tablename,0,1)!="'") $tablename="'$tablename'";
 250                 $res=sqlite_query($dbhandle,"SELECT tbl_name FROM sqlite_master WHERE tbl_name=$tablename LIMIT 1");
 251                 if (!nucleus_mysql_num_rows($res)) return true;
 252                 $query='DROP TABLE '.$tablename;
 253         } else if (strpos($uquery,'ALTER TABLE ')===0) {
 254                 $query=trim(substr($query,11));
 255                 if ($i=strpos($query,' ')) {
 256                         $tablename=trim(substr($query,0,$i));
 257                         $query=trim(substr($query,$i));
 258                         $ret =sqlite_altertable($tablename,$query,$dbhandle);
 259                         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");
 260                         return $ret;
 261                 }
 262                 // Syntax error
 263                 $query=='DROP TABLE '.$query;
 264         } else if (strpos($uquery,'INSERT INTO ')===0 || strpos($uquery,'REPLACE INTO ')===0 ||
 265                         strpos($uquery,'INSERT IGNORE INTO ')===0 || strpos($uquery,'REPLACE IGNORE INTO ')===0) {
 266                 $buff=str_replace(' IGNORE ',' OR IGNORE ',substr($uquery,0,($i=strpos($uquery,' INTO ')+6)));
 267                 $query=trim(substr($query,$i));
 268                 if ($i=strpos($query,' ')) {
 269                         $buff.=trim(substr($query,0,$i+1));
 270                         $query=trim(substr($query,$i));
 271                 }
 272                 if ($i=strpos($query,' ')) {
 273                         if (strpos(strtoupper($query),'SET')===0) {
 274                                 $query=trim(substr($query,3));
 275                                 $commands=sqlite_splitByComma($query);
 276                                 $query=' VALUES(';
 277                                 $buff.=' (';
 278                                 foreach($commands as $key=>$value){
 279                                         //echo "[".htmlspecialchars($value)."]";
 280                                         if (0<$key) {
 281                                                 $buff.=', ';
 282                                                 $query.=', ';
 283                                         }
 284                                         if ($i=strpos($value,'=')) {
 285                                                 $buff.=trim(substr($value,0,$i));
 286                                                 $query.=substr($value,$i+1);
 287                                         }
 288                                 }
 289                                 $buff.=')';
 290                                 $query.=')';
 291                         } else {
 292                                 $beforevalues='';
 293                                 $commands=sqlite_splitByComma($query);
 294                                 $query='';
 295                                 foreach($commands as $key=>$value){
 296                                         if ($beforevalues=='' && preg_match('/^(.*)\)\s+VALUES\s+\(/i',$value,$matches)) {
 297                                                 $beforevalues=$buff.' '.$query.$matches[1].')';
 298                                         }
 299                                         if (0<$key) $query.=$beforevalues.' VALUES ';// supports multiple insertion
 300                                         $query.=$value.';';
 301                                 }
 302                         }
 303                 }
 304                 $query=$buff.' '.$query;
 305         } else if (strpos($uquery,'SHOW TABLES LIKE ')===0) {
 306                 $query='SELECT name FROM sqlite_master WHERE type=\'table\' AND name LIKE '.substr($query,17);
 307         } else if (strpos($uquery,'SHOW TABLES')===0) {
 308                 $query='SELECT name FROM sqlite_master WHERE type=\'table\'';
 309         } else if (strpos($uquery,'SHOW KEYS FROM ')===0) {
 310                 $query=sqlite_showKeysFrom(trim(substr($query,15)),$dbhandle);
 311         } else if (strpos($uquery,'SHOW INDEX FROM ')===0) {
 312                 $query=sqlite_showKeysFrom(trim(substr($query,16)),$dbhandle);
 313         } else if (strpos($uquery,'SHOW FIELDS FROM ')===0) {
 314                 $query=sqlite_showFieldsFrom(trim(substr($query,17)),$dbhandle);
 315         } else if (strpos($uquery,'SHOW COLUMNS FROM ')===0) {
 316                 $query=sqlite_showFieldsFrom(trim(substr($query,18)),$dbhandle);
 317         } else if (strpos($uquery,'TRUNCATE TABLE ')===0) {
 318                 $query='DELETE FROM '.substr($query,15);
 319         } else sqlite_modifyQueryForUserFunc($query,$strpositions);
 320
 321         //Throw query again.
 322         $aftertrans=time()+microtime();
 323         if ($unbuffered) {
 324                 $ret=sqlite_unbuffered_query($dbhandle,$query);
 325         } else {
 326                 $ret=sqlite_query($dbhandle,$query);
 327         }
 328
 329         $afterquery=time()+microtime();
 330         if ($SQLITECONF['MEASURESPEED']) sqlite_DebugMessage("translated query:$query\n".
 331                 'translation: '.($aftertrans-$beforetrans).'sec, query: '.($afterquery-$aftertrans).'sec');
 332         if (!$ret) sqlite_ReturnWithError('SQL error',"<br /><i>".nucleus_mysql_error()."</i><br />".htmlspecialchars($p1)."<br /><br />\n".htmlspecialchars($query)."<hr />\n");
 333         foreach ($morequeries as $value) if ($value) @sqlite_query($dbhandle,$value);
 334         return $ret;
 335 }
 336 function sqlite_changeQuote(&$query){
 337         // This function is most important.
 338         // When you modify this function, do it very carefully.
 339         // Otherwise, you may allow crackers to do SQL-injection.
 340         // This function returns array that shows where the strings are.
 341         $sarray=array();
 342         $ret='';
 343         $qlen=strlen($query);
 344         for ($i=0;$i<$qlen;$i++) {
 345                 // Go to next quote
 346                 if (($i1=strpos($query,'"',$i))===false) $i1=$qlen;
 347                 if (($i2=strpos($query,"'",$i))===false) $i2=$qlen;
 348                 if (($i3=strpos($query,'`',$i))===false) $i3=$qlen;
 349                 if ($i1==$qlen && $i2==$qlen && $i3==$qlen) {
 350                         $ret.=($temp=substr($query,$i));
 351                         if (strstr($temp,';')) exit('Warning: try to use more than two queries?');
 352                         break;
 353                 }
 354                 if ($i2<($j=$i1)) $j=$i2;
 355                 if ($i3<$j) $j=$i3;
 356                 $ret.=($temp=substr($query,$i,$j-$i));
 357                 $c=$query[($i=$j)]; // $c keeps the type of quote.
 358                 if (strstr($temp,';')) exit('Warning: try to use more than two queries?');
 359
 360                 // Check between quotes.
 361                 // $j shows the begging positioin.
 362                 // $i will show the ending position.
 363                 $j=(++$i);
 364                 while ($i<$qlen) {
 365                         if (($i1=strpos($query,$c,$i))===false) $i1=$qlen;
 366                         if (($i2=strpos($query,"\\",$i))===false) $i2=$qlen;
 367                         if ($i2<$i1) {
 368                                 // \something. Skip two characters.
 369                                 $i=$i2+2;
 370                                 continue;
 371                         } if ($i1<($qlen-1) && $query[$i1+1]==$c) {
 372                                 // "", '' or ``.  Skip two characters.
 373                                 $i=$i1+2;
 374                                 continue;
 375                         } else {// OK. Reached the end position
 376                                 $i=$i1;
 377                                 break;
 378                         }
 379                 }
 380                 $i1=strlen($ret);
 381                 $ret.="'".sqlite_changeslashes(substr($query,$j,$i-$j));
 382                 if ($i<$qlen) $ret.="'"; //else Syntax error in query.
 383                 $i2=strlen($ret);
 384                 $sarray[$i1]=$i2;
 385         }//echo htmlspecialchars($query).'<br />'.htmlspecialchars($ret).'<br />';
 386         $query=$ret;
 387         return $sarray;
 388 }
 389 function sqlite_splitByComma($query) {
 390         // The query is splitted by comma and the data will be put into an array.
 391         // The commas in quoted strings are ignored.
 392         $commands=array();
 393         $i=0;
 394         $in=false;
 395         while ($query) {
 396                 if ($query[$i]=="'") {
 397                         $i++;
 398                         while ($i<strlen($query)) {
 399                                 if ($query[$i++]!="'") continue;
 400                                 if ($query[$i]!="'") break;
 401                                 $i++;
 402                         }
 403                         continue;
 404                 } else if ($query[$i]=='(') $in=true;
 405                 else if ($query[$i]==')') $in=false;
 406                 else if ($query[$i]==',' && (!$in)) {
 407                         $commands[]=trim(substr($query,0,$i));
 408                         $query=trim(substr($query,$i+1));
 409                         $i=0;
 410                         continue;
 411                 } // Do NOT add 'else' statement here! '$i++' is important in the following line.
 412                 if (strlen($query)<=($i++)) break;
 413         }
 414         if ($query) $commands[]=$query;
 415         return $commands;
 416 }
 417 function sqlite_changeslashes(&$text){
 418         // By SQLite, "''" is used in the quoted string instead of "\'".
 419         // In addition, only "'" seems to be allowed for perfect quotation of string.
 420         // This routine is used for the conversion from MySQL type to SQL type.
 421         // Do NOT use stripslashes() but use stripcslashes().  Otherwise, "\r\n" is not converted.
 422         if ($text==='') return '';
 423         return (sqlite_escape_string (stripcslashes((string)$text)));
 424 }
 425 function sqlite_altertable($table,$alterdefs,$dbhandle){
 426         // This function originaly came from Jon Jensen's PHP class, SQLiteDB.
 427         // There are some modifications by Katsumi.
 428         $table=str_replace("'",'',$table);
 429         if (!$alterdefs) return false;
 430         $result = sqlite_query($dbhandle,"SELECT sql,name,type FROM sqlite_master WHERE tbl_name = '".$table."' ORDER BY type DESC");
 431         if(!sqlite_num_rows($result)) return sqlite_ReturnWithError('no such table: '.$table);
 432         $row = sqlite_fetch_array($result); //table sql
 433         if (function_exists('microtime')) $tmpname='t'.str_replace('.','',str_replace(' ','',microtime()));
 434         else $tmpname = 't'.rand(0,999999).time();
 435         $origsql = trim(preg_replace("/[\s]+/"," ",str_replace(",",", ",preg_replace("/[\(]/","( ",$row['sql'],1))));
 436         $createtemptableSQL = 'CREATE TEMPORARY '.substr(trim(preg_replace("'".$table."'",$tmpname,$origsql,1)),6);
 437         $createindexsql = array();
 438         $i = 0;
 439         $defs = preg_split("/[,]+/",$alterdefs,-1,PREG_SPLIT_NO_EMPTY);
 440         $prevword = $table;
 441         $oldcols = preg_split("/[,]+/",substr(trim($createtemptableSQL),strpos(trim($createtemptableSQL),'(')+1),-1,PREG_SPLIT_NO_EMPTY);
 442         $newcols = array();
 443         for($i=0;$i<sizeof($oldcols);$i++){
 444                 $colparts = preg_split("/[\s]+/",$oldcols[$i],-1,PREG_SPLIT_NO_EMPTY);
 445                 $oldcols[$i] = $colparts[0];
 446                 $newcols[$colparts[0]] = $colparts[0];
 447         }
 448         $newcolumns = '';
 449         $oldcolumns = '';
 450         reset($newcols);
 451         while(list($key,$val) = each($newcols)){
 452                 if (strtoupper($val)!='PRIMARY' && strtoupper($key)!='PRIMARY' &&
 453                     strtoupper($val)!='UNIQUE'  && strtoupper($key)!='UNIQUE'){
 454                         $newcolumns .= ($newcolumns?', ':'').$val;
 455                         $oldcolumns .= ($oldcolumns?', ':'').$key;
 456                 }
 457         }
 458         $copytotempsql = 'INSERT INTO '.$tmpname.'('.$newcolumns.') SELECT '.$oldcolumns.' FROM '.$table;
 459         $dropoldsql = 'DROP TABLE '.$table;
 460         $createtesttableSQL = $createtemptableSQL;
 461         foreach($defs as $def){
 462                 $defparts = preg_split("/[\s]+/",$def,-1,PREG_SPLIT_NO_EMPTY);
 463                 $action = strtolower($defparts[0]);
 464                 switch($action){
 465                 case 'modify':
 466                         // Modification does not mean anything for SQLite, so just return true.
 467                         // But this command will be supported in future???
 468                         break;
 469                 case 'add':
 470                         if(($i=sizeof($defparts)) <= 2) return sqlite_ReturnWithError('near "'.$defparts[0].($defparts[1]?' '.$defparts[1]:'').'": syntax error');
 471
 472                         // ignore if there is already such table
 473                         $exists=false;
 474                         foreach($oldcols as $value) if (str_replace("'",'',$defparts[1])==str_replace("'",'',$value)) $exists=true;
 475                         if ($exists) break;
 476
 477                         // Ignore 'AFTER xxxx' statement.
 478                         // Maybe this feature will be supprted later.
 479                         if (4<=$i && strtoupper($defparts[$i-2])=='AFTER')
 480                                 unset($defparts[$i-1],$defparts[$i-2]);
 481
 482                         $createtesttableSQL = substr($createtesttableSQL,0,strlen($createtesttableSQL)-1).',';
 483                         for($i=1;$i<sizeof($defparts);$i++) $createtesttableSQL.=' '.$defparts[$i];
 484                         $createtesttableSQL.=')';
 485                         break;
 486                 case 'change':
 487                         if(sizeof($defparts) <= 3) return sqlite_ReturnWithError('near "'.$defparts[0].($defparts[1]?' '.$defparts[1]:'').($defparts[2]?' '.$defparts[2]:'').'": syntax error');
 488                         if($severpos = strpos($createtesttableSQL,' '.$defparts[1].' ')){
 489                                 if($newcols[$defparts[1]] != $defparts[1]){
 490                                         sqlite_ReturnWithError('unknown column "'.$defparts[1].'" in "'.$table.'"');
 491                                         return false;
 492                                 }
 493                                 $newcols[$defparts[1]] = $defparts[2];
 494                                 $nextcommapos = strpos($createtesttableSQL,',',$severpos);
 495                                 $insertval = '';
 496                                 for($i=2;$i<sizeof($defparts);$i++) $insertval.=' '.$defparts[$i];
 497                                 if($nextcommapos) $createtesttableSQL = substr($createtesttableSQL,0,$severpos).$insertval.substr($createtesttableSQL,$nextcommapos);
 498                                 else $createtesttableSQL = substr($createtesttableSQL,0,$severpos-(strpos($createtesttableSQL,',')?0:1)).$insertval.')';
 499                         } else  return sqlite_ReturnWithError('unknown column "'.$defparts[1].'" in "'.$table.'"');
 500                         break;
 501                 case 'drop':
 502                         if(sizeof($defparts) < 2) return sqlite_ReturnWithError('near "'.$defparts[0].($defparts[1]?' '.$defparts[1]:'').'": syntax error');
 503                         if($severpos = strpos($createtesttableSQL,' '.$defparts[1].' ')){
 504                                 $nextcommapos = strpos($createtesttableSQL,',',$severpos);
 505                                 if($nextcommapos) $createtesttableSQL = substr($createtesttableSQL,0,$severpos).substr($createtesttableSQL,$nextcommapos + 1);
 506                                 else $createtesttableSQL = substr($createtesttableSQL,0,$severpos-(strpos($createtesttableSQL,',')?0:1) - 1).')';
 507                                 unset($newcols[$defparts[1]]);
 508                         } else  return sqlite_ReturnWithError('unknown column "'.$defparts[1].'" in "'.$table.'"');
 509                         break;
 510                 default:
 511                         return sqlite_ReturnWithError('near "'.$prevword.'": syntax error');
 512                         break;
 513                 }
 514                 $prevword = $defparts[sizeof($defparts)-1];
 515         }
 516
 517         //this block of code generates a test table simply to verify that the columns specifed are valid in an sql statement
 518         //this ensures that no reserved words are used as columns, for example
 519         if (!sqlite_query($dbhandle,$createtesttableSQL)) return false;
 520         $droptempsql = 'DROP TABLE '.$tmpname;
 521         sqlite_query($dbhandle,$droptempsql);
 522         //end block
 523
 524         $createnewtableSQL = 'CREATE '.substr(trim(preg_replace("'".$tmpname."'",$table,$createtesttableSQL,1)),17);
 525         $newcolumns = '';
 526         $oldcolumns = '';
 527         reset($newcols);
 528         while(list($key,$val) = each($newcols)) {
 529                 if (strtoupper($val)!='PRIMARY' && strtoupper($key)!='PRIMARY' &&
 530                     strtoupper($val)!='UNIQUE'  && strtoupper($key)!='UNIQUE'){
 531                         $newcolumns .= ($newcolumns?', ':'').$val;
 532                         $oldcolumns .= ($oldcolumns?', ':'').$key;
 533                 }
 534         }
 535         $copytonewsql = 'INSERT INTO '.$table.'('.$newcolumns.') SELECT '.$oldcolumns.' FROM '.$tmpname;
 536
 537         sqlite_query($dbhandle,$createtemptableSQL); //create temp table
 538         sqlite_query($dbhandle,$copytotempsql); //copy to table
 539         sqlite_query($dbhandle,$dropoldsql); //drop old table
 540
 541         sqlite_query($dbhandle,$createnewtableSQL); //recreate original table
 542         sqlite_query($dbhandle,$copytonewsql); //copy back to original table
 543         sqlite_query($dbhandle,$droptempsql); //drop temp table
 544         return true;
 545 }
 546 function sqlite_showKeysFrom($tname,$dbhandle) {
 547         // This function is for supporing 'SHOW KEYS FROM' and 'SHOW INDEX FROM'.
 548         // For making the same result as obtained by MySQL, temporary table is made.
 549         $tname=str_replace("'",'',$tname);
 550
 551         // Create a temporary table for making result
 552         if (function_exists('microtime')) $tmpname='t'.str_replace('.','',str_replace(' ','',microtime()));
 553         else $tmpname = 't'.rand(0,999999).time();
 554         sqlite_query($dbhandle,"CREATE TEMPORARY TABLE $tmpname ('Table', 'Non_unique', 'Key_name', 'Seq_in_index',".
 555                 " 'Column_name', 'Collation', 'Cardinality', 'Sub_part', 'Packed', 'Null', 'Index_type', 'Comment')");
 556
 557         // First, get the sql query when the table created
 558         $res=sqlite_query($dbhandle,"SELECT sql FROM sqlite_master WHERE tbl_name = '$tname' ORDER BY type DESC");
 559         $a=nucleus_mysql_fetch_assoc($res);
 560         $tablesql=$a['sql'];
 561
 562         // Check if each columns are unique
 563         $notnull=array();
 564         foreach(sqlite_splitByComma(substr($tablesql,strpos($tablesql,'(')+1)) as $value) {
 565                 $name=str_replace("'",'',substr($value,0,strpos($value,' ')));
 566                 if (strpos(strtoupper($value),'NOT NULL')!==false) $notnull[$name]='';
 567                 else $notnull[$name]='YES';
 568         }
 569
 570         // Get the primary key (and check if it is unique???).
 571         if (preg_match('/[^a-zA-Z_\']([\S]+)[^a-zA-Z_\']+INTEGER NOT NULL PRIMARY KEY/i',$tablesql,$matches)) {
 572                 $pkey=str_replace("'",'',$matches[1]);
 573                 $pkeynull='';
 574         } else if (preg_match('/[^a-zA-Z_\']([\S]+)[^a-zA-Z_\']+INTEGER PRIMARY KEY/i',$tablesql,$matches)) {
 575                 $pkey=str_replace("'",'',$matches[1]);
 576                 $pkeynull='YES';
 577         } else if (preg_match('/PRIMARY KEY[\s]*?\(([^\)]+)\)/i',$tablesql,$matches)) {
 578                 $pkey=null;// PRIMARY KEY ('xxx'[,'xxx'])
 579                 foreach(explode(',',$matches[1]) as $key=>$value) {
 580                         $value=str_replace("'",'',trim($value));
 581                         $key++;
 582                         $cardinality=nucleus_mysql_num_rows(sqlite_query($dbhandle,"SELECT '$value' FROM '$tname'"));
 583                         sqlite_query($dbhandle,"INSERT INTO $tmpname ('Table', 'Non_unique', 'Key_name', 'Seq_in_index',".
 584                                 " 'Column_name', 'Collation', 'Cardinality', 'Sub_part', 'Packed', 'Null', 'Index_type', 'Comment')".
 585                                 " VALUES ('$tname', '0', 'PRIMARY', '$key',".
 586                                 " '$value', 'A', '$cardinality', null, null, '', 'BTREE', '')");
 587                 }
 588         } else $pkey=null;
 589
 590         // Check the index.
 591         $res=sqlite_query($dbhandle,"SELECT sql,name FROM sqlite_master WHERE type = 'index' and tbl_name = '$tname' ORDER BY type DESC");
 592         while ($a=nucleus_mysql_fetch_assoc($res)) {
 593                 if (!($sql=$a['sql'])) {// Primary key
 594                         if ($pkey && strpos(strtolower($a['name']),'autoindex')) {
 595                                 $cardinality=nucleus_mysql_num_rows(sqlite_query($dbhandle,"SELECT $pkey FROM '$tname'"));
 596                                 sqlite_query($dbhandle,"INSERT INTO $tmpname ('Table', 'Non_unique', 'Key_name', 'Seq_in_index',".
 597                                         " 'Column_name', 'Collation', 'Cardinality', 'Sub_part', 'Packed', 'Null', 'Index_type', 'Comment')".
 598                                         " VALUES ('$tname', '0', 'PRIMARY', '1',".
 599                                         " '$pkey', 'A', '$cardinality', null, null, '$pkeynull', 'BTREE', '')");
 600                                 $pkey=null;
 601                         }
 602                 } else {// Non-primary key
 603                         if (($name=str_replace("'",'',$a['name'])) && preg_match('/\(([\s\S]+)\)/',$sql,$matches)) {
 604                                 foreach(explode(',',$matches[1]) as $key=>$value) {
 605                                         $columnname=str_replace("'",'',$value);
 606                                         if (strpos(strtoupper($sql),'CREATE UNIQUE ')===0) $nonunique='0';
 607                                         else $nonunique='1';
 608                                         $cardinality=nucleus_mysql_num_rows(sqlite_query($dbhandle,"SELECT $columnname FROM '$tname'"));
 609                                         sqlite_query($dbhandle,"INSERT INTO $tmpname ('Table', 'Non_unique', 'Key_name', 'Seq_in_index',".
 610                                                 " 'Column_name', 'Collation', 'Cardinality', 'Sub_part', 'Packed', 'Null', 'Index_type', 'Comment')".
 611                                                 " VALUES ('$tname', '$nonunique', '$name', '".(string)($key+1)."',".
 612                                                 " '$columnname', 'A', '$cardinality', null, null, '$notnull[$columnname]', 'BTREE', '')");
 613                                 }
 614                         }
 615                 }
 616         }
 617         if ($pkey) { // The case that the key (index) is not defined.
 618                 $cardinality=nucleus_mysql_num_rows(sqlite_query($dbhandle,"SELECT $pkey FROM '$tname'"));
 619                 sqlite_query($dbhandle,"INSERT INTO $tmpname ('Table', 'Non_unique', 'Key_name', 'Seq_in_index',".
 620                         " 'Column_name', 'Collation', 'Cardinality', 'Sub_part', 'Packed', 'Null', 'Index_type', 'Comment')".
 621                         " VALUES ('$tname', '0', 'PRIMARY', '1',".
 622                         " '$pkey', 'A', '$cardinality', null, null, '$pkeynull', 'BTREE', '')");
 623                 $pkey=null;
 624         }
 625
 626         // return the final query to show the keys in MySQL style (using temporary table).
 627         return "SELECT * FROM $tmpname";
 628 }
 629 function sqlite_showFieldsFrom($tname,$dbhandle){
 630         // This function is for supporing 'SHOW FIELDS FROM' and 'SHOW COLUMNS FROM'.
 631         // For making the same result as obtained by MySQL, temporary table is made.
 632         $tname=str_replace("'",'',$tname);
 633
 634         // First, get the sql query when the table created
 635         $res=sqlite_query($dbhandle,"SELECT sql FROM sqlite_master WHERE tbl_name = '$tname' ORDER BY type DESC");
 636         $a=nucleus_mysql_fetch_assoc($res);
 637         $tablesql=trim($a['sql']);
 638         if (preg_match('/^[^\(]+\(([\s\S]*?)\)$/',$tablesql,$matches)) $tablesql=$matches[1];
 639         $tablearray=array();
 640         foreach(sqlite_splitByComma($tablesql) as $value) {
 641                 $value=trim($value);
 642                 if ($i=strpos($value,' ')) {
 643                         $name=str_replace("'",'',substr($value,0,$i));
 644                         $value=trim(substr($value,$i));
 645                         if (substr($value,-1)==',') $value=substr($value,strlen($value)-1);
 646                         $tablearray[$name]=$value;
 647                 }
 648         }
 649
 650         // Check if INDEX has been made for the parameter 'MUL' in 'KEY' column
 651         $multi=array();
 652         $res=sqlite_query($dbhandle,"SELECT name FROM sqlite_master WHERE type = 'index' and tbl_name = '$tname' ORDER BY type DESC");
 653         while ($a=nucleus_mysql_fetch_assoc($res)) $multi[str_replace("'",'',$a['name'])]='MUL';
 654
 655         // Create a temporary table for making result
 656         if (function_exists('microtime')) $tmpname='t'.str_replace('.','',str_replace(' ','',microtime()));
 657         else $tmpname = 't'.rand(0,999999).time();
 658         sqlite_query($dbhandle,"CREATE TEMPORARY TABLE $tmpname ('Field', 'Type', 'Null', 'Key', 'Default', 'Extra')");
 659
 660         // Check the table
 661         foreach($tablearray as $field=>$value) {
 662                 if (strtoupper($field)=='PRIMARY') continue;//PRIMARY KEY('xx'[,'xx'])
 663                 $uvalue=strtoupper($value.' ');
 664                 $key=(string)$multi[$field];
 665                 if ($uvalue=='INTEGER NOT NULL PRIMARY KEY ' || $uvalue=='INTEGER PRIMARY KEY ') {
 666                         $key='PRI';
 667                         $extra='auto_increment';
 668                 } else $extra='';
 669                 if ($i=strpos($uvalue,' ')) {
 670                         $type=substr($value,0,$i);
 671                         if (strpos($type,'(') && ($i=strpos($value,')')))
 672                                 $type=substr($value,0,$i+1);
 673                 } else $type='';
 674                 if (strtoupper($type)=='INTEGER') $type='int(11)';
 675                 if (strpos($uvalue,'NOT NULL')===false) $null='YES';
 676                 else {
 677                         $null='';
 678                         $value=preg_replace('/NOT NULL/i','',$value);
 679                         $uvalue=strtoupper($value);
 680                 }
 681                 if ($i=strpos($uvalue,'DEFAULT')) {
 682                         $default=trim(substr($value,$i+7));
 683                         if (strtoupper($default)=='NULL') {
 684                                 $default="";
 685                                 $setdefault="";
 686                         } else {
 687                                 if (substr($default,0,1)=="'") $default=substr($default,1,strlen($default)-2);
 688                                 $default="'".$default."',";
 689                                 $setdefault="'Default',";
 690                         }
 691                 } else if ($null!='YES' && $extra!='auto_increment') {
 692                         if (strpos(strtolower($type),'int')===false) $default="'',";
 693                         else $default="'0',";
 694                         $setdefault="'Default',";
 695                 } else {
 696                         $default="";
 697                         $setdefault="";
 698                 }
 699                 sqlite_query($dbhandle,"INSERT INTO '$tmpname' ('Field', 'Type', 'Null', 'Key', $setdefault 'Extra')".
 700                         " VALUES ('$field', '$type', '$null', '$key', $default '$extra')");
 701         }
 702
 703         // return the final query to show the keys in MySQL style (using temporary table).
 704         return "SELECT * FROM $tmpname";
 705 }
 706 function sqlite_mysql_query_debug(&$query){
 707         // The debug mode is so far used for checking query difference like "SELECT i.itime, ....".
 708         // This must be chaged to "SELECT i.itime as itime,..." for SQLite.
 709         // (This feature is not needed any more after the version 0.8.1 (see intialization query))
 710         $uquery=strtoupper($query);
 711         if (strpos($uquery,"SELECT ")!==0) return $query;
 712         if (($i=strpos($uquery," FROM "))===false) return $query;
 713         $select=sqlite_splitByComma(substr($query,7,$i-7));
 714         $query=substr($query,$i);
 715         $ret='';
 716         foreach($select as $value){
 717                 if (preg_match('/^([a-z_]+)\.([a-z_]+)$/i',$value,$matches)) {
 718                         $value=$value." as ".$matches[2];
 719                         $t=$matches[0]."=>$value\n";
 720                         $a=debug_backtrace();
 721                         foreach($a as $key=>$btrace) {
 722                                 if (!($templine=$btrace['line'])) continue;
 723                                 if (!($tempfile=$btrace['file'])) continue;
 724                                 $tempfile=preg_replace('/[\s\S]*?[\/\\\\]([^\/\\\\]+)$/','$1',$tempfile);
 725                                 $t.="$tempfile line:$templine\n";
 726                         }
 727                         sqlite_DebugMessage($t);
 728                 }
 729                 if ($ret) $ret.=', ';
 730                 $ret.=$value;
 731         }
 732         return "SELECT $ret $query";
 733 }
 734
 735 function nucleus_mysql_list_tables($p1=null,$p2=null) {
 736         global $SQLITE_DBHANDLE,$MYSQL_DATABASE;
 737         return sqlite_query($SQLITE_DBHANDLE,"SELECT name as Tables_in_$MYSQL_DATABASE FROM sqlite_master WHERE type='table'");
 738 }
 739 function nucleus_mysql_listtables($p1=null,$p2=null) { return nucleus_mysql_list_tables($p1,$p2);}
 740
 741 function nucleus_mysql_affected_rows($p1=null){
 742         global $SQLITE_DBHANDLE;
 743         if (!($dbhandle=$p1)) $dbhandle=$SQLITE_DBHANDLE;
 744         return sqlite_changes($dbhandle);
 745 }
 746
 747 function nucleus_mysql_error($p1=null){
 748         global $SQLITE_DBHANDLE;
 749         if (!($dbhandle=$p1)) $dbhandle=$SQLITE_DBHANDLE;
 750         return sqlite_error_string ( sqlite_last_error ($dbhandle) );
 751 }
 752
 753 function nucleus_mysql_fetch_array($p1,$p2=SQLITE_BOTH){
 754         return sqlite_fetch_array ($p1,$p2);
 755 }
 756
 757 function nucleus_mysql_fetch_assoc($p1){
 758         return sqlite_fetch_array($p1,SQLITE_ASSOC);
 759 }
 760
 761 function nucleus_mysql_fetch_object($p1,$p2=SQLITE_BOTH){
 762         if (is_array($ret=sqlite_fetch_array ($p1,$p2))) {
 763                 $o=new SQLITE_OBJECT;
 764                 foreach ($ret as $key=>$value) {
 765                         if (strstr($key,'.')) {// Remove table name.
 766                                 $key=preg_replace('/^(.+)\."(.+)"$/','"$2"',$key);
 767                                 $key=preg_replace('/^(.+)\.([^.^"]+)$/','$2',$key);
 768                         }
 769                         $o->$key=$value;
 770                 }
 771                 return $o;
 772         } else return false;
 773 }
 774
 775 function nucleus_mysql_fetch_row($p1){
 776         return sqlite_fetch_array($p1,SQLITE_NUM);
 777 }
 778
 779 function nucleus_mysql_field_name($p1,$p2){
 780         return sqlite_field_name ($p1,$p2);
 781 }
 782
 783 function nucleus_mysql_free_result($p1){
 784         // ???? Cannot find corresponding function of SQLite.
 785         // Maybe SQLite is NOT used for the high spec server
 786         // that need mysql_free_result() function because of
 787         // many SQL-queries in a script.
 788         return true;
 789 }
 790
 791 function nucleus_mysql_insert_id($p1=null){
 792         global $SQLITE_DBHANDLE;
 793         if (!($dbhandle=$p1)) $dbhandle=$SQLITE_DBHANDLE;
 794         return sqlite_last_insert_rowid ($dbhandle);
 795 }
 796
 797 function nucleus_mysql_num_fields($p1){
 798         return sqlite_num_fields ($p1);
 799 }
 800
 801 function nucleus_mysql_num_rows($p1){
 802         return sqlite_num_rows ($p1);
 803 }
 804 function nucleus_mysql_numrows($p1){
 805         return sqlite_num_rows ($p1);
 806 }
 807
 808 function nucleus_mysql_result($p1,$p2,$p3=null){
 809         if ($p3) return sqlite_ReturnWithError('nucleus_mysql_result');
 810         if (!$p2) return sqlite_fetch_single ($p1);
 811         $a=sqlite_fetch_array ($p1);
 812         return $a[$p2];
 813 }
 814
 815 function nucleus_mysql_unbuffered_query($p1,$p2=null){
 816         return nucleus_mysql_query($p1,$p2,true);
 817 }
 818
 819 function nucleus_mysql_client_encoding($p1=null){
 820         return sqlite_libencoding();
 821 }
 822
 823 function nucleus_mysql_data_seek($p1,$p2) {
 824         return sqlite_seek($p1,$p2);
 825 }
 826
 827 function nucleus_mysql_errno ($p1=null){
 828         global $SQLITE_DBHANDLE;
 829         if (!($dbhandle=$p1)) $dbhandle=$SQLITE_DBHANDLE;
 830         return sqlite_last_error($dbhandle);
 831 }
 832
 833 function nucleus_mysql_escape_string ($p1){
 834         // The "'" will be changed to "''".
 835         // This way works for both MySQL and SQLite when single quotes are used for string.
 836         // Note that single quote is always used in this wrapper.
 837         // If a plugin is made on SQLite-Nucleus and such plugin will be used for MySQL-Nucleus,
 838         // nucleus_mysql_escape_string() will be changed to mysql_escape_string() and
 839         // this routine won't be used, so this way won't be problem.
 840         return sqlite_escape_string($p1);
 841 }
 842
 843 function nucleus_mysql_real_escape_string ($p1,$p2=null){
 844         //addslashes used here.
 845         return addslashes($p1);
 846 }
 847
 848 function nucleus_mysql_create_db ($p1,$p2=null){
 849         // All prameters are ignored.
 850         // Returns always true;
 851         return true;
 852 }
 853
 854 function nucleus_mysql_pconnect($p1=null,$p2=null,$p3=null,$p4=null,$p5=null){
 855         global $SQLITE_DBHANDLE,$SQLITECONF;
 856         sqlite_close ($SQLITE_DBHANDLE);
 857         $SQLITE_DBHANDLE=sqlite_popen($SQLITECONF['DBFILENAME']);
 858         return ($SQLITE['DBHANDLE']=$SQLITE_DBHANDLE);
 859 }
 860
 861 function nucleus_mysql_fetch_field($p1,$p2=null){
 862         if ($p2) return sqlite_ReturnWithError('nucleus_mysql_fetch_field');
 863         // Only 'name' is supported.
 864         $o=new SQLITE_OBJECT;
 865         $o->name=array();
 866         if(is_array($ret=sqlite_fetch_array ($p1,SQLITE_ASSOC )))
 867                 foreach ($ret as $key=>$value) {
 868                         if (is_string($key)) array_push($o->name,$key);
 869                 }
 870         return $o;
 871
 872 }
 873
 874 // This function is called instead of _execute_queries() in backp.php
 875 function sqlite_restore_execute_queries(&$query){
 876         global $DIR_NUCLEUS,$DIR_LIBS,$DIR_PLUGINS,$CONF;
 877
 878         // Skip until the first "#" or "--"
 879         if (($i=strpos($query,"\n#"))===false) $i=strlen($query);
 880         if (($j=strpos($query,"\n--"))===false) $j=strlen($query);
 881         if ($i<$j) $query=substr($query,$i+1);
 882         else  $query=substr($query,$j+1);
 883
 884         // Save the query to temporary file in sqlite directory.
 885         if (function_exists('microtime')) {
 886                 $prefix=preg_replace('/[^0-9]/','',microtime());
 887         } else {
 888                 srand(time());
 889                 $prefix=(string)rand(0,999999);
 890         }
 891         $tmpname=tempnam($DIR_NUCLEUS.'sqlite/',"tmp$prefix");
 892         if (!($handle=@fopen($tmpname,'w'))) return 'Cannot save temporary DB file.';
 893         fwrite($handle,$query);
 894         fclose($handle);
 895         $tmpname=preg_replace('/[\s\S]*?[\/\\\\]([^\/\\\\]+)$/','$1',$tmpname);
 896
 897         // Read the option from NP_SQLite
 898         if (!class_exists('NucleusPlugin')) { include($DIR_LIBS.'PLUGIN.php');}
 899         if (!class_exists('NP_SQLite')) { include($DIR_PLUGINS.'NP_SQLite.php'); }
 900         $p=new NP_SQLite();
 901         if (!($numatonce=@$p->getOption('numatonce'))) $numatonce=20;
 902         if (!($refreshwait=@$p->getOption('refreshwait'))) $refreshwait=1;
 903
 904         // Start process.
 905         $url="plugins/sqlite/restore.php?dbfile=$tmpname&numatonce=$numatonce&refreshwait=$refreshwait";
 906         header('HTTP/1.0 301 Moved Permanently');
 907         header('Location: '.$url);
 908         exit('<html><body>Moved Permanently</body></html>');
 909 }
 910
 911 ?>