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   1  <?php
   2  /*
   3  V5.19  23-Apr-2014  (c) 2000-2014 John Lim (jlim#natsoft.com). All rights reserved.
   4    Released under both BSD license and Lesser GPL library license.
   5    Whenever there is any discrepancy between the two licenses,
   6    the BSD license will take precedence.
   7  
   8    Latest version is available at http://adodb.sourceforge.net
   9  
  10    SQLite info: http://www.hwaci.com/sw/sqlite/
  11  
  12    Install Instructions:
  13    ====================
  14    1. Place this in adodb/drivers
  15    2. Rename the file, remove the .txt prefix.
  16  */
  17  
  18  // security - hide paths
  19  if (!defined('ADODB_DIR')) die();
  20  
  21  class ADODB_sqlite extends ADOConnection {
  22      var $databaseType = "sqlite";
  23      var $replaceQuote = "''"; // string to use to replace quotes
  24      var $concat_operator='||';
  25      var $_errorNo = 0;
  26      var $hasLimit = true;
  27      var $hasInsertID = true;         /// supports autoincrement ID?
  28      var $hasAffectedRows = true;     /// supports affected rows for update/delete?
  29      var $metaTablesSQL = "SELECT name FROM sqlite_master WHERE type='table' ORDER BY name";
  30      var $sysDate = "adodb_date('Y-m-d')";
  31      var $sysTimeStamp = "adodb_date('Y-m-d H:i:s')";
  32      var $fmtTimeStamp = "'Y-m-d H:i:s'";
  33  
  34  	function ADODB_sqlite()
  35      {
  36      }
  37  
  38  /*
  39    function __get($name)
  40    {
  41        switch($name) {
  42      case 'sysDate': return "'".date($this->fmtDate)."'";
  43      case 'sysTimeStamp' : return "'".date($this->sysTimeStamp)."'";
  44      }
  45    }*/
  46  
  47  	function ServerInfo()
  48      {
  49          $arr['version'] = sqlite_libversion();
  50          $arr['description'] = 'SQLite ';
  51          $arr['encoding'] = sqlite_libencoding();
  52          return $arr;
  53      }
  54  
  55  	function BeginTrans()
  56      {
  57           if ($this->transOff) return true;
  58           $ret = $this->Execute("BEGIN TRANSACTION");
  59           $this->transCnt += 1;
  60           return true;
  61      }
  62  
  63  	function CommitTrans($ok=true)
  64      {
  65          if ($this->transOff) return true;
  66          if (!$ok) return $this->RollbackTrans();
  67          $ret = $this->Execute("COMMIT");
  68          if ($this->transCnt>0)$this->transCnt -= 1;
  69          return !empty($ret);
  70      }
  71  
  72  	function RollbackTrans()
  73      {
  74          if ($this->transOff) return true;
  75          $ret = $this->Execute("ROLLBACK");
  76          if ($this->transCnt>0)$this->transCnt -= 1;
  77          return !empty($ret);
  78      }
  79  
  80      // mark newnham
  81  	function MetaColumns($table, $normalize=true)
  82      {
  83        global $ADODB_FETCH_MODE;
  84        $false = false;
  85        $save = $ADODB_FETCH_MODE;
  86        $ADODB_FETCH_MODE = ADODB_FETCH_ASSOC;
  87        if ($this->fetchMode !== false) $savem = $this->SetFetchMode(false);
  88        $rs = $this->Execute("PRAGMA table_info('$table')");
  89        if (isset($savem)) $this->SetFetchMode($savem);
  90        if (!$rs) {
  91          $ADODB_FETCH_MODE = $save;
  92          return $false;
  93        }
  94        $arr = array();
  95        while ($r = $rs->FetchRow()) {
  96          $type = explode('(',$r['type']);
  97          $size = '';
  98          if (sizeof($type)==2)
  99          $size = trim($type[1],')');
 100          $fn = strtoupper($r['name']);
 101          $fld = new ADOFieldObject;
 102          $fld->name = $r['name'];
 103          $fld->type = $type[0];
 104          $fld->max_length = $size;
 105          $fld->not_null = $r['notnull'];
 106          $fld->default_value = $r['dflt_value'];
 107          $fld->scale = 0;
 108          if (isset($r['pk']) && $r['pk']) $fld->primary_key=1;
 109          if ($save == ADODB_FETCH_NUM) $arr[] = $fld;
 110          else $arr[strtoupper($fld->name)] = $fld;
 111        }
 112        $rs->Close();
 113        $ADODB_FETCH_MODE = $save;
 114        return $arr;
 115      }
 116  
 117  	function _init($parentDriver)
 118      {
 119  
 120          $parentDriver->hasTransactions = false;
 121          $parentDriver->hasInsertID = true;
 122      }
 123  
 124  	function _insertid()
 125      {
 126          return sqlite_last_insert_rowid($this->_connectionID);
 127      }
 128  
 129  	function _affectedrows()
 130      {
 131          return sqlite_changes($this->_connectionID);
 132      }
 133  
 134  	function ErrorMsg()
 135       {
 136          if ($this->_logsql) return $this->_errorMsg;
 137          return ($this->_errorNo) ? sqlite_error_string($this->_errorNo) : '';
 138      }
 139  
 140  	function ErrorNo()
 141      {
 142          return $this->_errorNo;
 143      }
 144  
 145  	function SQLDate($fmt, $col=false)
 146      {
 147          $fmt = $this->qstr($fmt);
 148          return ($col) ? "adodb_date2($fmt,$col)" : "adodb_date($fmt)";
 149      }
 150  
 151  
 152  	function _createFunctions()
 153      {
 154          @sqlite_create_function($this->_connectionID, 'adodb_date', 'adodb_date', 1);
 155          @sqlite_create_function($this->_connectionID, 'adodb_date2', 'adodb_date2', 2);
 156      }
 157  
 158  
 159      // returns true or false
 160  	function _connect($argHostname, $argUsername, $argPassword, $argDatabasename)
 161      {
 162          if (!function_exists('sqlite_open')) return null;
 163          if (empty($argHostname) && $argDatabasename) $argHostname = $argDatabasename;
 164  
 165          $this->_connectionID = sqlite_open($argHostname);
 166          if ($this->_connectionID === false) return false;
 167          $this->_createFunctions();
 168          return true;
 169      }
 170  
 171      // returns true or false
 172  	function _pconnect($argHostname, $argUsername, $argPassword, $argDatabasename)
 173      {
 174          if (!function_exists('sqlite_open')) return null;
 175          if (empty($argHostname) && $argDatabasename) $argHostname = $argDatabasename;
 176  
 177          $this->_connectionID = sqlite_popen($argHostname);
 178          if ($this->_connectionID === false) return false;
 179          $this->_createFunctions();
 180          return true;
 181      }
 182  
 183      // returns query ID if successful, otherwise false
 184  	function _query($sql,$inputarr=false)
 185      {
 186          $rez = sqlite_query($sql,$this->_connectionID);
 187          if (!$rez) {
 188              $this->_errorNo = sqlite_last_error($this->_connectionID);
 189          }
 190  
 191          return $rez;
 192      }
 193  
 194  	function SelectLimit($sql,$nrows=-1,$offset=-1,$inputarr=false,$secs2cache=0)
 195      {
 196          $offsetStr = ($offset >= 0) ? " OFFSET $offset" : '';
 197          $limitStr  = ($nrows >= 0)  ? " LIMIT $nrows" : ($offset >= 0 ? ' LIMIT 999999999' : '');
 198            if ($secs2cache)
 199                 $rs = $this->CacheExecute($secs2cache,$sql."$limitStr$offsetStr",$inputarr);
 200            else
 201                 $rs = $this->Execute($sql."$limitStr$offsetStr",$inputarr);
 202  
 203          return $rs;
 204      }
 205  
 206      /*
 207          This algorithm is not very efficient, but works even if table locking
 208          is not available.
 209  
 210          Will return false if unable to generate an ID after $MAXLOOPS attempts.
 211      */
 212      var $_genSeqSQL = "create table %s (id integer)";
 213  
 214  	function GenID($seq='adodbseq',$start=1)
 215      {
 216          // if you have to modify the parameter below, your database is overloaded,
 217          // or you need to implement generation of id's yourself!
 218          $MAXLOOPS = 100;
 219          //$this->debug=1;
 220          while (--$MAXLOOPS>=0) {
 221              @($num = $this->GetOne("select id from $seq"));
 222              if ($num === false) {
 223                  $this->Execute(sprintf($this->_genSeqSQL ,$seq));
 224                  $start -= 1;
 225                  $num = '0';
 226                  $ok = $this->Execute("insert into $seq values($start)");
 227                  if (!$ok) return false;
 228              }
 229              $this->Execute("update $seq set id=id+1 where id=$num");
 230  
 231              if ($this->affected_rows() > 0) {
 232                  $num += 1;
 233                  $this->genID = $num;
 234                  return $num;
 235              }
 236          }
 237          if ($fn = $this->raiseErrorFn) {
 238              $fn($this->databaseType,'GENID',-32000,"Unable to generate unique id after $MAXLOOPS attempts",$seq,$num);
 239          }
 240          return false;
 241      }
 242  
 243  	function CreateSequence($seqname='adodbseq',$start=1)
 244      {
 245          if (empty($this->_genSeqSQL)) return false;
 246          $ok = $this->Execute(sprintf($this->_genSeqSQL,$seqname));
 247          if (!$ok) return false;
 248          $start -= 1;
 249          return $this->Execute("insert into $seqname values($start)");
 250      }
 251  
 252      var $_dropSeqSQL = 'drop table %s';
 253  	function DropSequence($seqname)
 254      {
 255          if (empty($this->_dropSeqSQL)) return false;
 256          return $this->Execute(sprintf($this->_dropSeqSQL,$seqname));
 257      }
 258  
 259      // returns true or false
 260  	function _close()
 261      {
 262          return @sqlite_close($this->_connectionID);
 263      }
 264  
 265  	function MetaIndexes($table, $primary = FALSE, $owner=false, $owner = false)
 266      {
 267          $false = false;
 268          // save old fetch mode
 269          global $ADODB_FETCH_MODE;
 270          $save = $ADODB_FETCH_MODE;
 271          $ADODB_FETCH_MODE = ADODB_FETCH_NUM;
 272          if ($this->fetchMode !== FALSE) {
 273                 $savem = $this->SetFetchMode(FALSE);
 274          }
 275          $SQL=sprintf("SELECT name,sql FROM sqlite_master WHERE type='index' AND tbl_name='%s'", strtolower($table));
 276          $rs = $this->Execute($SQL);
 277          if (!is_object($rs)) {
 278              if (isset($savem))
 279                  $this->SetFetchMode($savem);
 280              $ADODB_FETCH_MODE = $save;
 281              return $false;
 282          }
 283  
 284          $indexes = array ();
 285          while ($row = $rs->FetchRow()) {
 286              if ($primary && preg_match("/primary/i",$row[1]) == 0) continue;
 287              if (!isset($indexes[$row[0]])) {
 288  
 289              $indexes[$row[0]] = array(
 290                     'unique' => preg_match("/unique/i",$row[1]),
 291                     'columns' => array());
 292              }
 293              /**
 294                * There must be a more elegant way of doing this,
 295                * the index elements appear in the SQL statement
 296                * in cols[1] between parentheses
 297                * e.g CREATE UNIQUE INDEX ware_0 ON warehouse (org,warehouse)
 298                */
 299              $cols = explode("(",$row[1]);
 300              $cols = explode(")",$cols[1]);
 301              array_pop($cols);
 302              $indexes[$row[0]]['columns'] = $cols;
 303          }
 304          if (isset($savem)) {
 305              $this->SetFetchMode($savem);
 306              $ADODB_FETCH_MODE = $save;
 307          }
 308          return $indexes;
 309      }
 310  
 311  }
 312  
 313  /*--------------------------------------------------------------------------------------
 314           Class Name: Recordset
 315  --------------------------------------------------------------------------------------*/
 316  
 317  class ADORecordset_sqlite extends ADORecordSet {
 318  
 319      var $databaseType = "sqlite";
 320      var $bind = false;
 321  
 322  	function ADORecordset_sqlite($queryID,$mode=false)
 323      {
 324  
 325          if ($mode === false) {
 326              global $ADODB_FETCH_MODE;
 327              $mode = $ADODB_FETCH_MODE;
 328          }
 329          switch($mode) {
 330          case ADODB_FETCH_NUM: $this->fetchMode = SQLITE_NUM; break;
 331          case ADODB_FETCH_ASSOC: $this->fetchMode = SQLITE_ASSOC; break;
 332          default: $this->fetchMode = SQLITE_BOTH; break;
 333          }
 334          $this->adodbFetchMode = $mode;
 335  
 336          $this->_queryID = $queryID;
 337  
 338          $this->_inited = true;
 339          $this->fields = array();
 340          if ($queryID) {
 341              $this->_currentRow = 0;
 342              $this->EOF = !$this->_fetch();
 343              @$this->_initrs();
 344          } else {
 345              $this->_numOfRows = 0;
 346              $this->_numOfFields = 0;
 347              $this->EOF = true;
 348          }
 349  
 350          return $this->_queryID;
 351      }
 352  
 353  
 354  	function FetchField($fieldOffset = -1)
 355      {
 356          $fld = new ADOFieldObject;
 357          $fld->name = sqlite_field_name($this->_queryID, $fieldOffset);
 358          $fld->type = 'VARCHAR';
 359          $fld->max_length = -1;
 360          return $fld;
 361      }
 362  
 363     function _initrs()
 364     {
 365          $this->_numOfRows = @sqlite_num_rows($this->_queryID);
 366          $this->_numOfFields = @sqlite_num_fields($this->_queryID);
 367     }
 368  
 369  	function Fields($colname)
 370      {
 371          if ($this->fetchMode != SQLITE_NUM) return $this->fields[$colname];
 372          if (!$this->bind) {
 373              $this->bind = array();
 374              for ($i=0; $i < $this->_numOfFields; $i++) {
 375                  $o = $this->FetchField($i);
 376                  $this->bind[strtoupper($o->name)] = $i;
 377              }
 378          }
 379  
 380           return $this->fields[$this->bind[strtoupper($colname)]];
 381      }
 382  
 383     function _seek($row)
 384     {
 385             return sqlite_seek($this->_queryID, $row);
 386     }
 387  
 388  	function _fetch($ignore_fields=false)
 389      {
 390          $this->fields = @sqlite_fetch_array($this->_queryID,$this->fetchMode);
 391          return !empty($this->fields);
 392      }
 393  
 394  	function _close()
 395      {
 396      }
 397  
 398  }