<?php
/*
@version   v5.21.0  2021-02-27
@copyright (c) 2000-2013 John Lim (jlim#natsoft.com). All rights reserved.
@copyright (c) 2014      Damien Regad, Mark Newnham and the ADOdb community
  Released under both BSD license and Lesser GPL library license.
  Whenever there is any discrepancy between the two licenses,
  the BSD license will take precedence.
Set tabs to 4 for best viewing.

  Latest version is available at https://adodb.org/

  firebird data driver. Requires firebird client. Works on Windows and Unix.

*/

// security - hide paths
if (!defined('ADODB_DIR')) die();

class ADODB_firebird extends ADOConnection {
	var $databaseType = "firebird";
	var $dataProvider = "firebird";
	var $replaceQuote = "''"; // string to use to replace quotes
	var $fbird_datefmt = '%Y-%m-%d'; // For hours,mins,secs change to '%Y-%m-%d %H:%M:%S';
	var $fmtDate = "'Y-m-d'";
	var $fbird_timestampfmt = "%Y-%m-%d %H:%M:%S";
	var $fbird_timefmt = "%H:%M:%S";
	var $fmtTimeStamp = "'Y-m-d, H:i:s'";
	var $concat_operator='||';
	var $_transactionID;
	var $metaTablesSQL = "select lower(rdb\$relation_name) from rdb\$relations where rdb\$relation_name not like 'RDB\$%'";
	//OPN STUFF start
	var $metaColumnsSQL = "select lower(a.rdb\$field_name), a.rdb\$null_flag, a.rdb\$default_source, b.rdb\$field_length, b.rdb\$field_scale, b.rdb\$field_sub_type, b.rdb\$field_precision, b.rdb\$field_type from rdb\$relation_fields a, rdb\$fields b where a.rdb\$field_source = b.rdb\$field_name and a.rdb\$relation_name = '%s' order by a.rdb\$field_position asc";
	//OPN STUFF end
	var $ibasetrans;
	var $hasGenID = true;
	var $_bindInputArray = true;
	var $buffers = 0;
	var $dialect = 3;
	var $sysDate = "cast('TODAY' as timestamp)";
	var $sysTimeStamp = "CURRENT_TIMESTAMP"; //"cast('NOW' as timestamp)";
	var $ansiOuter = true;
	var $hasAffectedRows = true;
	var $poorAffectedRows = false;
	var $blobEncodeType = 'C';
	var $role = false;
	var $nameQuote = '';		/// string to use to quote identifiers and names

	function __construct()
	{
	// Ignore IBASE_DEFAULT we want a more practical transaction!
	//	if (defined('IBASE_DEFAULT')) $this->ibasetrans = IBASE_DEFAULT;
	//	else
		$this->ibasetrans = IBASE_WAIT | IBASE_REC_VERSION | IBASE_COMMITTED;
	}


	// returns true or false
	function _connect($argHostname, $argUsername, $argPassword, $argDatabasename,$persist=false)
	{
		if (!function_exists('fbird_pconnect')) return null;
		if ($argDatabasename) $argHostname .= ':'.$argDatabasename;
		$fn = ($persist) ? 'fbird_pconnect':'fbird_connect';
		if ($this->role)
			$this->_connectionID = $fn($argHostname,$argUsername,$argPassword,
					$this->charSet,$this->buffers,$this->dialect,$this->role);
		else
			$this->_connectionID = $fn($argHostname,$argUsername,$argPassword,
					$this->charSet,$this->buffers,$this->dialect);

		if ($this->dialect != 1) { // http://www.ibphoenix.com/ibp_60_del_id_ds.html
			$this->replaceQuote = "''";
		}
		if ($this->_connectionID === false) {
			$this->_handleerror();
			return false;
		}

		// PHP5 change.
		if (function_exists('fbird_timefmt')) {
			fbird_timefmt($this->fbird_datefmt,fbird_DATE );
			if ($this->dialect == 1) {
				fbird_timefmt($this->fbird_datefmt,fbird_TIMESTAMP );
			} else {
				fbird_timefmt($this->fbird_timestampfmt,fbird_TIMESTAMP );
			}
			fbird_timefmt($this->fbird_timefmt,fbird_TIME );

		} else {
			ini_set("ibase.timestampformat", $this->fbird_timestampfmt);
			ini_set("ibase.dateformat", $this->fbird_datefmt);
			ini_set("ibase.timeformat", $this->fbird_timefmt);
		}
		return true;
	}

	// returns true or false
	function _pconnect($argHostname, $argUsername, $argPassword, $argDatabasename)
	{
		return $this->_connect($argHostname, $argUsername, $argPassword, $argDatabasename,true);
	}


	function MetaPrimaryKeys($table,$owner_notused=false,$internalKey=false)
	{
		if ($internalKey) {
			return array('RDB$DB_KEY');
		}

		$table = strtoupper($table);

		$sql = 'SELECT S.RDB$FIELD_NAME AFIELDNAME
	FROM RDB$INDICES I JOIN RDB$INDEX_SEGMENTS S ON I.RDB$INDEX_NAME=S.RDB$INDEX_NAME
	WHERE I.RDB$RELATION_NAME=\''.$table.'\' and I.RDB$INDEX_NAME like \'RDB$PRIMARY%\'
	ORDER BY I.RDB$INDEX_NAME,S.RDB$FIELD_POSITION';

		$a = $this->GetCol($sql,false,true);
		if ($a && sizeof($a)>0) return $a;
		return false;
	}

	function ServerInfo()
	{
		$arr['dialect'] = $this->dialect;
		switch($arr['dialect']) {
		case '':
		case '1': $s = 'Firebird Dialect 1'; break;
		case '2': $s = 'Firebird Dialect 2'; break;
		default:
		case '3': $s = 'Firebird Dialect 3'; break;
		}
		$arr['version'] = ADOConnection::_findvers($s);
		$arr['description'] = $s;
		return $arr;
	}

	function BeginTrans()
	{
		if ($this->transOff) return true;
		$this->transCnt += 1;
		$this->autoCommit = false;
		$this->_transactionID = fbird_trans( $this->ibasetrans, $this->_connectionID );
		return $this->_transactionID;
	}

	function CommitTrans($ok=true)
	{
		if (!$ok) {
			return $this->RollbackTrans();
		}
		if ($this->transOff) {
			return true;
		}
		if ($this->transCnt) {
			$this->transCnt -= 1;
		}
		$ret = false;
		$this->autoCommit = true;
		if ($this->_transactionID) {
			//print ' commit ';
			$ret = fbird_commit($this->_transactionID);
		}
		$this->_transactionID = false;
		return $ret;
	}

	function _affectedrows()
	{
			return fbird_affected_rows( $this->_transactionID ? $this->_transactionID : $this->_connectionID );
	}

	// there are some compat problems with ADODB_COUNTRECS=false and $this->_logsql currently.
	// it appears that ibase extension cannot support multiple concurrent queryid's
	function _Execute($sql,$inputarr=false) {
	global $ADODB_COUNTRECS;

		if ($this->_logsql) {
			$savecrecs = $ADODB_COUNTRECS;
			$ADODB_COUNTRECS = true; // force countrecs
			$ret =& ADOConnection::_Execute($sql,$inputarr);
			$ADODB_COUNTRECS = $savecrecs;
		} else {
			$ret = ADOConnection::_Execute($sql,$inputarr);
		}
		return $ret;
	}

	function RollbackTrans()
	{
		if ($this->transOff) return true;
		if ($this->transCnt) $this->transCnt -= 1;
		$ret = false;
		$this->autoCommit = true;
		if ($this->_transactionID) {
			$ret = fbird_rollback($this->_transactionID);
		}
		$this->_transactionID = false;

		return $ret;
	}

	function &MetaIndexes ($table, $primary = FALSE, $owner=false)
	{
		// save old fetch mode
		global $ADODB_FETCH_MODE;
		$false = false;
		$save = $ADODB_FETCH_MODE;
		$ADODB_FETCH_MODE = ADODB_FETCH_NUM;
		if ($this->fetchMode !== FALSE) {
				$savem = $this->SetFetchMode(FALSE);
		}
		$table = strtoupper($table);
		$sql = "SELECT * FROM RDB\$INDICES WHERE RDB\$RELATION_NAME = '".$table."'";
		if (!$primary) {
			$sql .= " AND RDB\$INDEX_NAME NOT LIKE 'RDB\$%'";
		} else {
			$sql .= " AND RDB\$INDEX_NAME NOT LIKE 'RDB\$FOREIGN%'";
		}
		// get index details
		$rs = $this->Execute($sql);
		if (!is_object($rs)) {
			// restore fetchmode
			if (isset($savem)) {
				$this->SetFetchMode($savem);
			}
			$ADODB_FETCH_MODE = $save;
			return $false;
		}

		$indexes = array();
		while ($row = $rs->FetchRow()) {
			$index = $row[0];
			if (!isset($indexes[$index])) {
				if (is_null($row[3])) {
					$row[3] = 0;
				}
				$indexes[$index] = array(
					'unique' => ($row[3] == 1),
					'columns' => array()
				);
			}
			$sql = "SELECT * FROM RDB\$INDEX_SEGMENTS WHERE RDB\$INDEX_NAME = '".$index."' ORDER BY RDB\$FIELD_POSITION ASC";
			$rs1 = $this->Execute($sql);
			while ($row1 = $rs1->FetchRow()) {
				$indexes[$index]['columns'][$row1[2]] = $row1[1];
			}
		}
		// restore fetchmode
		if (isset($savem)) {
			$this->SetFetchMode($savem);
		}
		$ADODB_FETCH_MODE = $save;

		return $indexes;
	}


	// See http://community.borland.com/article/0,1410,25844,00.html
	function RowLock($tables,$where,$col=false)
	{
		if ($this->autoCommit) {
			$this->BeginTrans();
		}
		$this->Execute("UPDATE $table SET $col=$col WHERE $where "); // is this correct - jlim?
		return 1;
	}


	function CreateSequence($seqname = 'adodbseq', $startID = 1)
	{
		$ok = $this->Execute(("CREATE GENERATOR $seqname" ));
		if (!$ok) return false;
		return $this->Execute("SET GENERATOR $seqname TO ".($startID-1));
	}

	function DropSequence($seqname = 'adodbseq')
	{
		$seqname = strtoupper($seqname);
		return $this->Execute("DROP GENERATOR $seqname");
	}

	function GenID($seqname='adodbseq',$startID=1)
	{
		$getnext = ("SELECT Gen_ID($seqname,1) FROM RDB\$DATABASE");
		$rs = @$this->Execute($getnext);
		if (!$rs) {
			$this->Execute(("CREATE GENERATOR $seqname" ));
			$this->Execute("SET GENERATOR $seqname TO ".($startID-1).';');
			$rs = $this->Execute($getnext);
		}
		if ($rs && !$rs->EOF) {
			$this->genID = (integer) reset($rs->fields);
		}
		else {
			$this->genID = 0; // false
		}

		if ($rs) {
			$rs->Close();
		}

		return $this->genID;
	}

	function SelectDB($dbName)
	{
		return false;
	}

	function _handleerror()
	{
		$this->_errorMsg = fbird_errmsg();
	}

	function ErrorNo()
	{
		if (preg_match('/error code = ([\-0-9]*)/i', $this->_errorMsg,$arr)) return (integer) $arr[1];
		else return 0;
	}

	function ErrorMsg()
	{
			return $this->_errorMsg;
	}

	function Prepare($sql)
	{
		$stmt = fbird_prepare($this->_connectionID,$sql);
		if (!$stmt) return false;
		return array($sql,$stmt);
	}

	   // returns query ID if successful, otherwise false
	   // there have been reports of problems with nested queries - the code is probably not re-entrant?
	function _query($sql,$iarr=false)
	{
		if ( !$this->isConnected() ) return false;
		if (!$this->autoCommit && $this->_transactionID) {
			$conn = $this->_transactionID;
			$docommit = false;
		} else {
			$conn = $this->_connectionID;
			$docommit = true;
		}
		if (is_array($sql)) {
			$fn = 'fbird_execute';
			$sql = $sql[1];
			if (is_array($iarr)) {
				if ( !isset($iarr[0]) ) 
					$iarr[0] = ''; // PHP5 compat hack
				$fnarr = array_merge( array($sql) , $iarr);
				$ret = call_user_func_array($fn,$fnarr);
			}
			else {
				$ret = $fn($sql);
			}
		} else {
			$fn = 'fbird_query';
			if (is_array($iarr)) 
			{
				if (sizeof($iarr) == 0) 
					$iarr[0] = ''; // PHP5 compat hack
				$fnarr = array_merge( array($conn,$sql) , $iarr);
				$ret = call_user_func_array($fn,$fnarr);
			}
			else {
				$ret = $fn($conn, $sql);
			}
		}
		if ($docommit && $ret === true) {
			fbird_commit($this->_connectionID);
		}

		$this->_handleerror();
		return $ret;
	}

	// returns true or false
	function _close()
	{
		if (!$this->autoCommit) {
			@fbird_rollback($this->_connectionID);
		}
		return @fbird_close($this->_connectionID);
	}

	//OPN STUFF start
	function _ConvertFieldType(&$fld, $ftype, $flen, $fscale, $fsubtype, $fprecision, $dialect3)
	{
		$fscale = abs($fscale);
		$fld->max_length = $flen;
		$fld->scale = null;
		switch($ftype){
			case 7:
			case 8:
				if ($dialect3) {
					switch($fsubtype){
						case 0:
							$fld->type = ($ftype == 7 ? 'smallint' : 'integer');
							break;
						case 1:
							$fld->type = 'numeric';
							$fld->max_length = $fprecision;
							$fld->scale = $fscale;
							break;
						case 2:
							$fld->type = 'decimal';
							$fld->max_length = $fprecision;
							$fld->scale = $fscale;
							break;
					} // switch
				} else {
					if ($fscale !=0) {
						$fld->type = 'decimal';
						$fld->scale = $fscale;
						$fld->max_length = ($ftype == 7 ? 4 : 9);
					} else {
						$fld->type = ($ftype == 7 ? 'smallint' : 'integer');
					}
				}
				break;
			case 16:
				if ($dialect3) {
					switch($fsubtype){
						case 0:
							$fld->type = 'decimal';
							$fld->max_length = 18;
							$fld->scale = 0;
							break;
						case 1:
							$fld->type = 'numeric';
							$fld->max_length = $fprecision;
							$fld->scale = $fscale;
							break;
						case 2:
							$fld->type = 'decimal';
							$fld->max_length = $fprecision;
							$fld->scale = $fscale;
							break;
					} // switch
				}
				break;
			case 10:
				$fld->type = 'float';
				break;
			case 14:
				$fld->type = 'char';
				break;
			case 27:
				if ($fscale !=0) {
					$fld->type = 'decimal';
					$fld->max_length = 15;
					$fld->scale = 5;
				} else {
					$fld->type = 'double';
				}
				break;
			case 35:
				if ($dialect3) {
					$fld->type = 'timestamp';
				} else {
					$fld->type = 'date';
				}
				break;
			case 12:
				$fld->type = 'date';
				break;
			case 13:
				$fld->type = 'time';
				break;
			case 37:
				$fld->type = 'varchar';
				break;
			case 40:
				$fld->type = 'cstring';
				break;
			case 261:
				$fld->type = 'blob';
				$fld->max_length = -1;
				break;
		} // switch
	}
	//OPN STUFF end

	// returns array of ADOFieldObjects for current table
	function MetaColumns($table, $normalize=true)
	{
	global $ADODB_FETCH_MODE;

		$save = $ADODB_FETCH_MODE;
		$ADODB_FETCH_MODE = ADODB_FETCH_NUM;

		$rs = $this->Execute(sprintf($this->metaColumnsSQL,strtoupper($table)));

		$ADODB_FETCH_MODE = $save;
		$false = false;
		if ($rs === false) {
			return $false;
		}

		$retarr = array();
		//OPN STUFF start
		$dialect3 = ($this->dialect==3 ? true : false);
		//OPN STUFF end
		while (!$rs->EOF) { //print_r($rs->fields);
			$fld = new ADOFieldObject();
			$fld->name = trim($rs->fields[0]);
			//OPN STUFF start
			$this->_ConvertFieldType($fld, $rs->fields[7], $rs->fields[3], $rs->fields[4], $rs->fields[5], $rs->fields[6], $dialect3);
			if (isset($rs->fields[1]) && $rs->fields[1]) {
				$fld->not_null = true;
			}
			if (isset($rs->fields[2])) {

				$fld->has_default = true;
				$d = substr($rs->fields[2],strlen('default '));
				switch ($fld->type)
				{
				case 'smallint':
				case 'integer': $fld->default_value = (int) $d; break;
				case 'char':
				case 'blob':
				case 'text':
				case 'varchar': $fld->default_value = (string) substr($d,1,strlen($d)-2); break;
				case 'double':
				case 'float': $fld->default_value = (float) $d; break;
				default: $fld->default_value = $d; break;
				}
		//	case 35:$tt = 'TIMESTAMP'; break;
			}
			if ((isset($rs->fields[5])) && ($fld->type == 'blob')) {
				$fld->sub_type = $rs->fields[5];
			} else {
				$fld->sub_type = null;
			}
			//OPN STUFF end
			if ($ADODB_FETCH_MODE == ADODB_FETCH_NUM) $retarr[] = $fld;
			else $retarr[strtoupper($fld->name)] = $fld;

			$rs->MoveNext();
		}
		$rs->Close();
		if ( empty($retarr)) return $false;
		else return $retarr;
	}

	function BlobEncode( $blob )
	{
		$blobid = fbird_blob_create( $this->_connectionID);
		fbird_blob_add( $blobid, $blob );
		return fbird_blob_close( $blobid );
	}

	// since we auto-decode all blob's since 2.42,
	// BlobDecode should not do any transforms
	function BlobDecode($blob)
	{
		return $blob;
	}

	// old blobdecode function
	// still used to auto-decode all blob's
	function _BlobDecode_old( $blob )
	{
		$blobid = fbird_blob_open($this->_connectionID, $blob );
		$realblob = fbird_blob_get( $blobid,$this->maxblobsize); // 2nd param is max size of blob -- Kevin Boillet <kevinboillet@yahoo.fr>
		while($string = fbird_blob_get($blobid, 8192)){
			$realblob .= $string;
		}
		fbird_blob_close( $blobid );

		return( $realblob );
	}

	function _BlobDecode( $blob )
	{
		$blob_data = fbird_blob_info($this->_connectionID, $blob );
		$blobid    = fbird_blob_open($this->_connectionID, $blob );

		if( $blob_data[0] > $this->maxblobsize ) {
			$realblob = fbird_blob_get($blobid, $this->maxblobsize);

			while($string = fbird_blob_get($blobid, 8192)) {
				$realblob .= $string;
			}
		} else {
			$realblob = fbird_blob_get($blobid, $blob_data[0]);
		}

		fbird_blob_close( $blobid );
		return( $realblob );
	}

	function UpdateBlobFile($table,$column,$path,$where,$blobtype='BLOB')
	{
		$fd = fopen($path,'rb');
		if ($fd === false) return false;
		$blob_id = fbird_blob_create($this->_connectionID);

		/* fill with data */

		while ($val = fread($fd,32768)){
			fbird_blob_add($blob_id, $val);
		}

		/* close and get $blob_id_str for inserting into table */
		$blob_id_str = fbird_blob_close($blob_id);

		fclose($fd);
		return $this->Execute("UPDATE $table SET $column=(?) WHERE $where",array($blob_id_str)) != false;
	}

	/*
		Insert a null into the blob field of the table first.
		Then use UpdateBlob to store the blob.

		Usage:

		$conn->Execute('INSERT INTO blobtable (id, blobcol) VALUES (1, null)');
		$conn->UpdateBlob('blobtable','blobcol',$blob,'id=1');
	*/
	function UpdateBlob($table,$column,$val,$where,$blobtype='BLOB')
	{
	$blob_id = fbird_blob_create($this->_connectionID);

	// fbird_blob_add($blob_id, $val);

	// replacement that solves the problem by which only the first modulus 64K /
	// of $val are stored at the blob field ////////////////////////////////////
	// Thx Abel Berenstein  aberenstein#afip.gov.ar
	$len = strlen($val);
	$chunk_size = 32768;
	$tail_size = $len % $chunk_size;
	$n_chunks = ($len - $tail_size) / $chunk_size;

	for ($n = 0; $n < $n_chunks; $n++) {
		$start = $n * $chunk_size;
		$data = substr($val, $start, $chunk_size);
		fbird_blob_add($blob_id, $data);
	}

	if ($tail_size) {
		$start = $n_chunks * $chunk_size;
		$data = substr($val, $start, $tail_size);
		fbird_blob_add($blob_id, $data);
	}
	// end replacement /////////////////////////////////////////////////////////

	$blob_id_str = fbird_blob_close($blob_id);

	return $this->Execute("UPDATE $table SET $column=(?) WHERE $where",array($blob_id_str)) != false;

	}


	function OldUpdateBlob($table,$column,$val,$where,$blobtype='BLOB')
	{
		$blob_id = fbird_blob_create($this->_connectionID);
		fbird_blob_add($blob_id, $val);
		$blob_id_str = fbird_blob_close($blob_id);
		return $this->Execute("UPDATE $table SET $column=(?) WHERE $where",array($blob_id_str)) != false;
	}

	// Format date column in sql string given an input format that understands Y M D
	// Only since Interbase 6.0 - uses EXTRACT
	// problem - does not zero-fill the day and month yet
	function SQLDate($fmt, $col=false)
	{
		if (!$col) $col = $this->sysDate;
		$s = '';

		$len = strlen($fmt);
		for ($i=0; $i < $len; $i++) {
			if ($s) $s .= '||';
			$ch = $fmt[$i];
			switch($ch) {
			case 'Y':
			case 'y':
				$s .= "extract(year from $col)";
				break;
			case 'M':
			case 'm':
				$s .= "extract(month from $col)";
				break;
			case 'W':
			case 'w':
				// The more accurate way of doing this is with a stored procedure
				// See http://wiki.firebirdsql.org/wiki/index.php?page=DATE+Handling+Functions for details
				$s .= "((extract(yearday from $col) - extract(weekday from $col - 1) + 7) / 7)";
				break;
			case 'Q':
			case 'q':
				$s .= "cast(((extract(month from $col)+2) / 3) as integer)";
				break;
			case 'D':
			case 'd':
				$s .= "(extract(day from $col))";
				break;
			case 'H':
			case 'h':
				$s .= "(extract(hour from $col))";
				break;
			case 'I':
			case 'i':
				$s .= "(extract(minute from $col))";
				break;
			case 'S':
			case 's':
				$s .= "CAST((extract(second from $col)) AS INTEGER)";
				break;

			default:
				if ($ch == '\\') {
					$i++;
					$ch = substr($fmt,$i,1);
				}
				$s .= $this->qstr($ch);
				break;
			}
		}
		return $s;
	}

	// Note that Interbase 6.5 uses this ROWS instead - don't you love forking wars!
	// 		SELECT col1, col2 FROM table ROWS 5 -- get 5 rows
	//		SELECT col1, col2 FROM TABLE ORDER BY col1 ROWS 3 TO 7 -- first 5 skip 2
	function &SelectLimit($sql,$nrows=-1,$offset=-1,$inputarr=false, $secs=0)
	{
		$nrows = (integer) $nrows;
		$offset = (integer) $offset;
		$str = 'SELECT ';
		if ($nrows >= 0) $str .= "FIRST $nrows ";
		$str .=($offset>=0) ? "SKIP $offset " : '';

		$sql = preg_replace('/^[ \t]*select/i',$str,$sql);
		if ($secs)
			$rs = $this->CacheExecute($secs,$sql,$inputarr);
		else
			$rs = $this->Execute($sql,$inputarr);

		return $rs;
	}

}

/*--------------------------------------------------------------------------------------
		 Class Name: Recordset
--------------------------------------------------------------------------------------*/

class  ADORecordset_firebird extends ADORecordSet
{

	var $databaseType = "firebird";
	var $bind=false;
	var $_cacheType;

	function __construct($id,$mode=false)
	{
	global $ADODB_FETCH_MODE;

			$this->fetchMode = ($mode === false) ? $ADODB_FETCH_MODE : $mode;
			parent::__construct($id);
	}

	/**
	 * Get column information in the Recordset object.
	 * fetchField() can be used in order to obtain information about fields in
	 * a certain query result. If the field offset isn't specified, the next
	 * field that wasn't yet retrieved by fetchField() is retrieved.
	 * @return object containing field information.
	*/
	function FetchField($fieldOffset = -1)
	{
			$fld = new ADOFieldObject;
			 $ibf = fbird_field_info($this->_queryID,$fieldOffset);

			$name = empty($ibf['alias']) ? $ibf['name'] : $ibf['alias'];

			switch (ADODB_ASSOC_CASE) {
				case ADODB_ASSOC_CASE_UPPER:
					$fld->name = strtoupper($name);
					break;
				case ADODB_ASSOC_CASE_LOWER:
					$fld->name = strtolower($name);
					break;
				case ADODB_ASSOC_CASE_NATIVE:
				default:
					$fld->name = $name;
					break;
			}

			$fld->type = $ibf['type'];
			$fld->max_length = $ibf['length'];

			/*       This needs to be populated from the metadata */
			$fld->not_null = false;
			$fld->has_default = false;
			$fld->default_value = 'null';
			return $fld;
	}

	function _initrs()
	{
		$this->_numOfRows = -1;
		$this->_numOfFields = @fbird_num_fields($this->_queryID);

		// cache types for blob decode check
		for ($i=0, $max = $this->_numOfFields; $i < $max; $i++) {
			$f1 = $this->FetchField($i);
			$this->_cacheType[] = $f1->type;
		}
	}

	function _seek($row)
	{
		return false;
	}

	function _fetch()
	{
		$f = @fbird_fetch_row($this->_queryID);
		if ($f === false) {
			$this->fields = false;
			return false;
		}
		// OPN stuff start - optimized
		// fix missing nulls and decode blobs automatically

		global $ADODB_ANSI_PADDING_OFF;
		//$ADODB_ANSI_PADDING_OFF=1;
		$rtrim = !empty($ADODB_ANSI_PADDING_OFF);

		for ($i=0, $max = $this->_numOfFields; $i < $max; $i++) {
			if ($this->_cacheType[$i]=="BLOB") {
				if (isset($f[$i])) {
					$f[$i] = $this->connection->_BlobDecode($f[$i]);
				} else {
					$f[$i] = null;
				}
			} else {
				if (!isset($f[$i])) {
					$f[$i] = null;
				} else if ($rtrim && is_string($f[$i])) {
					$f[$i] = rtrim($f[$i]);
				}
			}
		}
		// OPN stuff end

		$this->fields = $f;
		if ($this->fetchMode == ADODB_FETCH_ASSOC) {
			$this->fields = $this->GetRowAssoc();
		} else if ($this->fetchMode == ADODB_FETCH_BOTH) {
			$this->fields = array_merge($this->fields,$this->GetRowAssoc());
		}
		return true;
	}

	/* Use associative array to get fields array */
	function Fields($colname)
	{
		if ($this->fetchMode & ADODB_FETCH_ASSOC) return $this->fields[$colname];
		if (!$this->bind) {
			$this->bind = array();
			for ($i=0; $i < $this->_numOfFields; $i++) {
				$o = $this->FetchField($i);
				$this->bind[strtoupper($o->name)] = $i;
			}
		}

		return $this->fields[$this->bind[strtoupper($colname)]];

	}


	function _close()
	{
			return @fbird_free_result($this->_queryID);
	}

	function MetaType($t,$len=-1,$fieldobj=false)
	{
		if (is_object($t)) {
			$fieldobj = $t;
			$t = $fieldobj->type;
			$len = $fieldobj->max_length;
		}
		switch (strtoupper($t)) {
		case 'CHAR':
			return 'C';

		case 'TEXT':
		case 'VARCHAR':
		case 'VARYING':
		if ($len <= $this->blobSize) return 'C';
			return 'X';
		case 'BLOB':
			return 'B';

		case 'TIMESTAMP':
		case 'DATE': return 'D';
		case 'TIME': return 'T';
				//case 'T': return 'T';

				//case 'L': return 'L';
		case 'INT':
		case 'SHORT':
		case 'INTEGER': return 'I';
		default: return ADODB_DEFAULT_METATYPE;
		}
	}

}
