<?php
/*
 @version   v5.20.18  28-Jun-2020
 @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.
 Contribution by Frank M. Kromann <frank@frontbase.com>.
  Set tabs to 8.
*/

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

if (! defined("_ADODB_FBSQL_LAYER")) {
 define("_ADODB_FBSQL_LAYER", 1 );

class ADODB_fbsql extends ADOConnection {
	var $databaseType = 'fbsql';
	var $hasInsertID = true;
	var $hasAffectedRows = true;
	var $metaTablesSQL = "SHOW TABLES";
	var $metaColumnsSQL = "SHOW COLUMNS FROM %s";
	var $fmtTimeStamp = "'Y-m-d H:i:s'";
	var $hasLimit = false;

	function __construct()
	{
	}

	function _insertid()
	{
			return fbsql_insert_id($this->_connectionID);
	}

	function _affectedrows()
	{
			return fbsql_affected_rows($this->_connectionID);
	}

  	function MetaDatabases()
	{
		$qid = fbsql_list_dbs($this->_connectionID);
		$arr = array();
		$i = 0;
		$max = fbsql_num_rows($qid);
		while ($i < $max) {
			$arr[] = fbsql_tablename($qid,$i);
			$i += 1;
		}
		return $arr;
	}

	// returns concatenated string
	function Concat()
	{
		$s = "";
		$arr = func_get_args();
		$first = true;

		$s = implode(',',$arr);
		if (sizeof($arr) > 0) return "CONCAT($s)";
		else return '';
	}

	// returns true or false
	function _connect($argHostname, $argUsername, $argPassword, $argDatabasename)
	{
		$this->_connectionID = fbsql_connect($argHostname,$argUsername,$argPassword);
		if ($this->_connectionID === false) return false;
		if ($argDatabasename) return $this->SelectDB($argDatabasename);
		return true;
	}

	// returns true or false
	function _pconnect($argHostname, $argUsername, $argPassword, $argDatabasename)
	{
		$this->_connectionID = fbsql_pconnect($argHostname,$argUsername,$argPassword);
		if ($this->_connectionID === false) return false;
		if ($argDatabasename) return $this->SelectDB($argDatabasename);
		return true;
	}

 	function MetaColumns($table, $normalize=true)
	{
		if ($this->metaColumnsSQL) {

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

			if ($rs === false) return false;

			$retarr = array();
			while (!$rs->EOF){
				$fld = new ADOFieldObject();
				$fld->name = $rs->fields[0];
				$fld->type = $rs->fields[1];

				// split type into type(length):
				if (preg_match("/^(.+)\((\d+)\)$/", $fld->type, $query_array)) {
					$fld->type = $query_array[1];
					$fld->max_length = $query_array[2];
				} else {
					$fld->max_length = -1;
				}
				$fld->not_null = ($rs->fields[2] != 'YES');
				$fld->primary_key = ($rs->fields[3] == 'PRI');
				$fld->auto_increment = (strpos($rs->fields[5], 'auto_increment') !== false);
				$fld->binary = (strpos($fld->type,'blob') !== false);

				$retarr[strtoupper($fld->name)] = $fld;
				$rs->MoveNext();
			}
			$rs->Close();
			return $retarr;
		}
		return false;
	}

	// returns true or false
	function SelectDB($dbName)
	{
		$this->database = $dbName;
		if ($this->_connectionID) {
			return @fbsql_select_db($dbName,$this->_connectionID);
		}
		else return false;
	}


	// returns queryID or false
	function _query($sql,$inputarr=false)
	{
		return fbsql_query("$sql;",$this->_connectionID);
	}

	/*	Returns: the last error message from previous database operation	*/
	function ErrorMsg()
	{
		$this->_errorMsg = @fbsql_error($this->_connectionID);
			return $this->_errorMsg;
	}

	/*	Returns: the last error number from previous database operation	*/
	function ErrorNo()
	{
		return @fbsql_errno($this->_connectionID);
	}

	// returns true or false
	function _close()
	{
		return @fbsql_close($this->_connectionID);
	}

}

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

class ADORecordSet_fbsql extends ADORecordSet{

	var $databaseType = "fbsql";
	var $canSeek = true;

	function __construct($queryID,$mode=false)
	{
		if (!$mode) {
			global $ADODB_FETCH_MODE;
			$mode = $ADODB_FETCH_MODE;
		}
		switch ($mode) {
		case ADODB_FETCH_NUM: $this->fetchMode = FBSQL_NUM; break;
		case ADODB_FETCH_ASSOC: $this->fetchMode = FBSQL_ASSOC; break;
		case ADODB_FETCH_BOTH:
		default:
		$this->fetchMode = FBSQL_BOTH; break;
		}
		return parent::__construct($queryID);
	}

	function _initrs()
	{
	GLOBAL $ADODB_COUNTRECS;
		$this->_numOfRows = ($ADODB_COUNTRECS) ? @fbsql_num_rows($this->_queryID):-1;
		$this->_numOfFields = @fbsql_num_fields($this->_queryID);
	}



	function FetchField($fieldOffset = -1) {
		if ($fieldOffset != -1) {
			$o =  @fbsql_fetch_field($this->_queryID, $fieldOffset);
			//$o->max_length = -1; // fbsql returns the max length less spaces -- so it is unrealiable
			$f = @fbsql_field_flags($this->_queryID,$fieldOffset);
			$o->binary = (strpos($f,'binary')!== false);
		}
		else if ($fieldOffset == -1) {	/*	The $fieldOffset argument is not provided thus its -1 	*/
			$o = @fbsql_fetch_field($this->_queryID);// fbsql returns the max length less spaces -- so it is unrealiable
			//$o->max_length = -1;
		}

		return $o;
	}

	function _seek($row)
	{
		return @fbsql_data_seek($this->_queryID,$row);
	}

	function _fetch($ignore_fields=false)
	{
		$this->fields = @fbsql_fetch_array($this->_queryID,$this->fetchMode);
		return ($this->fields == true);
	}

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

	function MetaType($t,$len=-1,$fieldobj=false)
	{
		if (is_object($t)) {
			$fieldobj = $t;
			$t = $fieldobj->type;
			$len = $fieldobj->max_length;
		}
		$len = -1; // fbsql max_length is not accurate
		switch (strtoupper($t)) {
		case 'CHARACTER':
		case 'CHARACTER VARYING':
		case 'BLOB':
		case 'CLOB':
		case 'BIT':
		case 'BIT VARYING':
			if ($len <= $this->blobSize) return 'C';

		// so we have to check whether binary...
		case 'IMAGE':
		case 'LONGBLOB':
		case 'BLOB':
		case 'MEDIUMBLOB':
			return !empty($fieldobj->binary) ? 'B' : 'X';

		case 'DATE': return 'D';

		case 'TIME':
		case 'TIME WITH TIME ZONE':
		case 'TIMESTAMP':
		case 'TIMESTAMP WITH TIME ZONE': return 'T';

		case 'PRIMARY_KEY':
			return 'R';
		case 'INTEGER':
		case 'SMALLINT':
		case 'BOOLEAN':

			if (!empty($fieldobj->primary_key)) return 'R';
			else return 'I';

		default: return 'N';
		}
	}

} //class
} // defined
