<?php
/* 
V4.81 3 May 2006  (c) 2000-2006 John Lim (jlim#natsoft.com.my). All rights reserved.
  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 http://adodb.sourceforge.net
  
  Requires ODBC. Works on Windows and Unix.

	Problems: 
		Where is float/decimal type in pdo_param_type
		LOB handling for CLOB/BLOB differs significantly
*/
// security - hide paths
if (!defined('ADODB_DIR')) die();


/*
enum pdo_param_type {
PDO::PARAM_NULL, 0

/* int as in long (the php native int type).
 * If you mark a column as an int, PDO expects get_col to return
 * a pointer to a long 
PDO::PARAM_INT, 1

/* get_col ptr should point to start of the string buffer 
PDO::PARAM_STR, 2

/* get_col: when len is 0 ptr should point to a php_stream *,
 * otherwise it should behave like a string. Indicate a NULL field
 * value by setting the ptr to NULL 
PDO::PARAM_LOB, 3

/* get_col: will expect the ptr to point to a new PDOStatement object handle,
 * but this isn't wired up yet 
PDO::PARAM_STMT, 4 /* hierarchical result set 

/* get_col ptr should point to a zend_bool 
PDO::PARAM_BOOL, 5


/* magic flag to denote a parameter as being input/output 
PDO::PARAM_INPUT_OUTPUT = 0x80000000
};
*/
	
function adodb_pdo_type($t)
{
	switch($t) {
	case 2: return 'VARCHAR';
	case 3: return 'BLOB';
	default: return 'NUMERIC';
	}
}
	 
/*--------------------------------------------------------------------------------------
--------------------------------------------------------------------------------------*/

////////////////////////////////////////////////



class ADODB_pdo_base extends ADODB_pdo {

	var $sysDate = "'?'";
	var $sysTimeStamp = "'?'";
	

	function _init($parentDriver)
	{
		$parentDriver->_bindInputArray = true;
		#$parentDriver->_connectionID->setAttribute(PDO::MYSQL_ATTR_USE_BUFFERED_QUERY,true);
	}
	
	function ServerInfo()
	{
		return ADOConnection::ServerInfo();
	}
	
	function SelectLimit($sql,$nrows=-1,$offset=-1,$inputarr=false,$secs2cache=0)
	{
		$ret = ADOConnection::SelectLimit($sql,$nrows,$offset,$inputarr,$secs2cache);
		return $ret;
	}
	
	function MetaTables()
	{
		return false;
	}
	
	function MetaColumns()
	{
		return false;
	}
}


class ADODB_pdo extends ADOConnection {
	var $databaseType = "pdo";	
	var $dataProvider = "pdo";
	var $fmtDate = "'Y-m-d'";
	var $fmtTimeStamp = "'Y-m-d, h:i:sA'";
	var $replaceQuote = "''"; // string to use to replace quotes
	var $hasAffectedRows = true;
	var $_bindInputArray = true;	
	var $_genSeqSQL = "create table %s (id integer)";
	var $_autocommit = true;
	var $_haserrorfunctions = true;
	var $_lastAffectedRows = 0;
	
	var $_errormsg = false;
	var $_errorno = false;
	
	var $dsnType = '';
	var $stmt = false;
	
	function ADODB_pdo()
	{
	}
	
	function _UpdatePDO()
	{
		$d = &$this->_driver;
		$this->fmtDate = $d->fmtDate;
		$this->fmtTimeStamp = $d->fmtTimeStamp;
		$this->replaceQuote = $d->replaceQuote;
		$this->sysDate = $d->sysDate;
		$this->sysTimeStamp = $d->sysTimeStamp;
		$this->random = $d->random;
		$this->concat_operator = $d->concat_operator;
		$this->nameQuote = $d->nameQuote;
		
		$d->_init($this);
	}
	
	function Time()
	{
		if (!empty($this->_driver->_hasdual)) $sql = "select $this->sysTimeStamp from dual";
		else $sql = "select $this->sysTimeStamp";
		
		$rs =& $this->_Execute($sql);
		if ($rs && !$rs->EOF) return $this->UnixTimeStamp(reset($rs->fields));
		
		return false;
	}
	
	// returns true or false
	function _connect($argDSN, $argUsername, $argPassword, $argDatabasename, $persist=false)
	{
		$at = strpos($argDSN,':');
		$this->dsnType = substr($argDSN,0,$at);

		if ($argDatabasename) {
			$argDSN .= ';dbname='.$argDatabasename;
		}
		try {
			$this->_connectionID = new PDO($argDSN, $argUsername, $argPassword);
		} catch (Exception $e) {
			$this->_connectionID = false;
			$this->_errorno = -1;
			//var_dump($e);
			$this->_errormsg = 'Connection attempt failed: '.$e->getMessage();
			return false;
		}
		
		if ($this->_connectionID) {
			switch(ADODB_ASSOC_CASE){
			case 0: $m = PDO::CASE_LOWER; break;
			case 1: $m = PDO::CASE_UPPER; break;
			default:
			case 2: $m = PDO::CASE_NATURAL; break;
			}
			
			//$this->_connectionID->setAttribute(PDO::ATTR_ERRMODE,PDO::ERRMODE_SILENT );
			$this->_connectionID->setAttribute(PDO::ATTR_CASE,$m);
			
			$class = 'ADODB_pdo_'.$this->dsnType;
			//$this->_connectionID->setAttribute(PDO::ATTR_AUTOCOMMIT,true);
			switch($this->dsnType) {
			case 'oci':
			case 'mysql':
			case 'pgsql':
			case 'mssql':
				include_once(ADODB_DIR.'/drivers/adodb-pdo_'.$this->dsnType.'.inc.php');
				break;
			}
			if (class_exists($class))
				$this->_driver = new $class();
			else
				$this->_driver = new ADODB_pdo_base();
			
			$this->_driver->_connectionID = $this->_connectionID;
			$this->_UpdatePDO();
			return true;
		}
		$this->_driver = new ADODB_pdo_base();
		return false;
	}
	
	// returns true or false
	function _pconnect($argDSN, $argUsername, $argPassword, $argDatabasename)
	{
		return $this->_connect($argDSN, $argUsername, $argPassword, $argDatabasename, true);
	}
	
	/*------------------------------------------------------------------------------*/
	
	
	function SelectLimit($sql,$nrows=-1,$offset=-1,$inputarr=false,$secs2cache=0) 
	{	
		$save = $this->_driver->fetchMode;
		$this->_driver->fetchMode = $this->fetchMode;
	 	$this->_driver->debug = $this->debug;
		$ret = $this->_driver->SelectLimit($sql,$nrows,$offset,$inputarr,$secs2cache);
		$this->_driver->fetchMode = $save;
		return $ret;
	}
	
	
	function ServerInfo()
	{
		return $this->_driver->ServerInfo();
	}
	
	function MetaTables($ttype=false,$showSchema=false,$mask=false)
	{
		return $this->_driver->MetaTables($ttype,$showSchema,$mask);
	}
	
	function MetaColumns($table,$normalize=true)
	{
		return $this->_driver->MetaColumns($table,$normalize);
	}
	
	function InParameter(&$stmt,&$var,$name,$maxLen=4000,$type=false)
	{
		$obj = $stmt[1];
		if ($type) $obj->bindParam($name,$var,$type,$maxLen);
		else $obj->bindParam($name, $var);
	}
	
	
	function ErrorMsg()
	{
		if ($this->_errormsg !== false) return $this->_errormsg;
		if (!empty($this->_stmt)) $arr = $this->_stmt->errorInfo();
		else if (!empty($this->_connectionID)) $arr = $this->_connectionID->errorInfo();
		else return 'No Connection Established';
		
		
		if ($arr) {
		 	if (sizeof($arr)<2) return '';
			if ((integer)$arr[1]) return $arr[2];
			else return '';
		} else return '-1';
	}
	

	function ErrorNo()
	{
		if ($this->_errorno !== false) return $this->_errorno;
		if (!empty($this->_stmt)) $err = $this->_stmt->errorCode();
		else if (!empty($this->_connectionID)) {
			$arr = $this->_connectionID->errorInfo();
			if (isset($arr[0])) $err = $arr[0];
			else $err = -1;
		} else
			return 0;
			
		if ($err == '00000') return 0; // allows empty check
		return $err;
	}

	function BeginTrans()
	{	
		if (!$this->hasTransactions) return false;
		if ($this->transOff) return true; 
		$this->transCnt += 1;
		$this->_autocommit = false;
		$this->_connectionID->setAttribute(PDO::ATTR_AUTOCOMMIT,false);
		return $this->_connectionID->beginTransaction();
	}
	
	function CommitTrans($ok=true) 
	{ 
		if (!$this->hasTransactions) return false;
		if ($this->transOff) return true; 
		if (!$ok) return $this->RollbackTrans();
		if ($this->transCnt) $this->transCnt -= 1;
		$this->_autocommit = true;
		
		$ret = $this->_connectionID->commit();
		$this->_connectionID->setAttribute(PDO::ATTR_AUTOCOMMIT,true);
		return $ret;
	}
	
	function RollbackTrans()
	{
		if (!$this->hasTransactions) return false;
		if ($this->transOff) return true; 
		if ($this->transCnt) $this->transCnt -= 1;
		$this->_autocommit = true;
		
		$ret = $this->_connectionID->rollback();
		$this->_connectionID->setAttribute(PDO::ATTR_AUTOCOMMIT,true);
		return $ret;
	}
	
	function Prepare($sql)
	{
		$this->_stmt = $this->_connectionID->prepare($sql);
		if ($this->_stmt) return array($sql,$this->_stmt);
		
		return false;
	}
	
	function PrepareStmt($sql)
	{
		$stmt = $this->_connectionID->prepare($sql);
		if (!$stmt) return false;
		$obj = new ADOPDOStatement($stmt,$this);
		return $obj;
	}

	/* returns queryID or false */
	function _query($sql,$inputarr=false) 
	{
		if (is_array($sql)) {
			$stmt = $sql[1];
		} else {
			$stmt = $this->_connectionID->prepare($sql);
		}
		
		if ($stmt) {
			$this->_driver->debug = $this->debug;
			if ($inputarr) $ok = $stmt->execute($inputarr);
			else $ok = $stmt->execute();
		} 
		
		
		$this->_errormsg = false;
		$this->_errorno = false;
			
		if ($ok) {
			$this->_stmt = $stmt;
			return $stmt;
		}
		
		if ($stmt) {
			
			$arr = $stmt->errorinfo();
			if ((integer)$arr[1]) {
				$this->_errormsg = $arr[2];
				$this->_errorno = $arr[1];
			}

		} else {
			$this->_errormsg = false;
			$this->_errorno = false;
		}
		return false;
	}

	// returns true or false
	function _close()
	{
		$this->_stmt = false;
		return true;
	}

	function _affectedrows()
	{
		return ($this->_stmt) ? $this->_stmt->rowCount() : 0;
	}
	
	function _insertid()
	{
		return ($this->_connectionID) ? $this->_connectionID->lastInsertId() : 0;
	}
}

class ADOPDOStatement {

	var $databaseType = "pdo";		
	var $dataProvider = "pdo";
	var $_stmt;
	var $_connectionID;
	
	function ADOPDOStatement($stmt,$connection)
	{
		$this->_stmt = $stmt;
		$this->_connectionID = $connection;
	}
	
	function Execute($inputArr=false)
	{
		$savestmt = $this->_connectionID->_stmt;
		$rs = $this->_connectionID->Execute(array(false,$this->_stmt),$inputArr);
		$this->_connectionID->_stmt = $savestmt;
		return $rs;
	}
	
	function InParameter(&$var,$name,$maxLen=4000,$type=false)
	{

		if ($type) $this->_stmt->bindParam($name,$var,$type,$maxLen);
		else $this->_stmt->bindParam($name, $var);
	}
	
	function Affected_Rows()
	{
		return ($this->_stmt) ? $this->_stmt->rowCount() : 0;
	}
	
	function ErrorMsg()
	{
		if ($this->_stmt) $arr = $this->_stmt->errorInfo();
		else $arr = $this->_connectionID->errorInfo();

		if (is_array($arr)) {
			if ((integer) $arr[0] && isset($arr[2])) return $arr[2];
			else return '';
		} else return '-1';
	}
	
	function NumCols()
	{
		return ($this->_stmt) ? $this->_stmt->columnCount() : 0;
	}
	
	function ErrorNo()
	{
		if ($this->_stmt) return $this->_stmt->errorCode();
		else return $this->_connectionID->errorInfo();
	}
}

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

class ADORecordSet_pdo extends ADORecordSet {	
	
	var $bind = false;
	var $databaseType = "pdo";		
	var $dataProvider = "pdo";
	
	function ADORecordSet_pdo($id,$mode=false)
	{
		if ($mode === false) {  
			global $ADODB_FETCH_MODE;
			$mode = $ADODB_FETCH_MODE;
		}
		$this->adodbFetchMode = $mode;
		switch($mode) {
		case ADODB_FETCH_NUM: $mode = PDO::FETCH_NUM; break;
		case ADODB_FETCH_ASSOC:  $mode = PDO::FETCH_ASSOC; break;
		
		case ADODB_FETCH_BOTH: 
		default: $mode = PDO::FETCH_BOTH; break;
		}
		$this->fetchMode = $mode;
		
		$this->_queryID = $id;
		$this->ADORecordSet($id);
	}

	
	function Init()
	{
		if ($this->_inited) return;
		$this->_inited = true;
		if ($this->_queryID) @$this->_initrs();
		else {
			$this->_numOfRows = 0;
			$this->_numOfFields = 0;
		}
		if ($this->_numOfRows != 0 && $this->_currentRow == -1) {
			$this->_currentRow = 0;
			if ($this->EOF = ($this->_fetch() === false)) {
				$this->_numOfRows = 0; // _numOfRows could be -1
			}
		} else {
			$this->EOF = true;
		}
	}
	
	function _initrs()
	{
	global $ADODB_COUNTRECS;
	
		$this->_numOfRows = ($ADODB_COUNTRECS) ? @$this->_queryID->rowCount() : -1;
		if (!$this->_numOfRows) $this->_numOfRows = -1;
		$this->_numOfFields = $this->_queryID->columnCount();
	}

	// returns the field object
	function &FetchField($fieldOffset = -1) 
	{
		$off=$fieldOffset+1; // offsets begin at 1
		
		$o= new ADOFieldObject();
		$arr = @$this->_queryID->getColumnMeta($fieldOffset);
		if (!$arr) {
			$o->name = 'bad getColumnMeta()';
			$o->max_length = -1;
			$o->type = 'VARCHAR';
			$o->precision = 0;
	#		$false = false;
			return $o;
		}
		//adodb_pr($arr);
		$o->name = $arr['name'];
		if (isset($arr['native_type'])) $o->type = $arr['native_type'];
		else $o->type = adodb_pdo_type($arr['pdo_type']);
		$o->max_length = $arr['len'];
		$o->precision = $arr['precision'];
		
		if (ADODB_ASSOC_CASE == 0) $o->name = strtolower($o->name);
		else if (ADODB_ASSOC_CASE == 1) $o->name = strtoupper($o->name);
		return $o;
	}
	
	function _seek($row)
	{
		return false;
	}
	
	function _fetch()
	{
		if (!$this->_queryID) return false;
		
		$this->fields = $this->_queryID->fetch($this->fetchMode);
		return !empty($this->fields);
	}
	
	function _close() 
	{
		$this->_queryID = false;
	}
	
	function Fields($colname)
	{
		if ($this->adodbFetchMode != ADODB_FETCH_NUM) 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)]];
	}

}

?>
