item another one >.<

includes/libs/DbSimple/Mysql.php

@@ -0,0 +1,208 @@
+<?php
+/**
+ * DbSimple_Mysql: MySQL database.
+ * (C) Dk Lab, http://en.dklab.ru
+ *
+ * This library is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Lesser General Public
+ * License as published by the Free Software Foundation; either
+ * version 2.1 of the License, or (at your option) any later version.
+ * See http://www.gnu.org/copyleft/lesser.html
+ *
+ * Placeholders end blobs are emulated.
+ *
+ * @author Dmitry Koterov, http://forum.dklab.ru/users/DmitryKoterov/
+ * @author Konstantin Zhinko, http://forum.dklab.ru/users/KonstantinGinkoTit/
+ *
+ * @version 2.x $Id: Mysql.php 247 2008-08-18 21:17:08Z dk $
+ */
+require_once dirname(__FILE__).'/Database.php';
+
+
+/**
+ * Database class for MySQL.
+ */
+class DbSimple_Mysql extends DbSimple_Database
+{
+    var $link;
+
+    /**
+     * constructor(string $dsn)
+     * Connect to MySQL.
+     */
+    function DbSimple_Mysql($dsn)
+    {
+        $connect = 'mysql_'.((isset($dsn['persist']) && $dsn['persist'])?'p':'').'connect';
+        if (!is_callable($connect))
+            return $this->_setLastError("-1", "MySQL extension is not loaded", $connect);
+        $ok = $this->link = @call_user_func($connect,
+            $dsn['host'] . (empty($dsn['port'])? "" : ":".$dsn['port']),
+            empty($dsn['user'])?'':$dsn['user'],
+            empty($dsn['pass'])?'':$dsn['pass'],
+            true
+        );
+        $this->_resetLastError();
+        if (!$ok)
+            if (!$ok) return $this->_setDbError('mysql_connect("' . $str . '", "' . $p['user'] . '")');
+        $ok = @mysql_select_db(preg_replace('{^/}s', '', $dsn['path']), $this->link);
+        if (!$ok)
+            return $this->_setDbError('mysql_select_db()');
+        mysql_query('SET NAMES '.(isset($dsn['enc'])?$dsn['enc']:'UTF8'));
+    }
+
+
+    protected function _performEscape($s, $isIdent=false)
+    {
+        if (!$isIdent)
+            return "'" . mysql_real_escape_string($s, $this->link) . "'";
+        else
+            return "`" . str_replace('`', '``', $s) . "`";
+    }
+
+
+    protected function _performNewBlob($blobid=null)
+    {
+        return new DbSimple_Mysql_Blob($this, $blobid);
+    }
+
+
+    protected function _performGetBlobFieldNames($result)
+    {
+        $blobFields = array();
+        for ($i=mysql_num_fields($result)-1; $i>=0; $i--)
+        {
+            $type = mysql_field_type($result, $i);
+            if (stripos($type, "BLOB") !== false)
+                $blobFields[] = mysql_field_name($result, $i);
+        }
+        return $blobFields;
+    }
+
+
+    protected function _performGetPlaceholderIgnoreRe()
+    {
+        return '
+            "   (?> [^"\\\\]+|\\\\"|\\\\)*    "   |
+            \'  (?> [^\'\\\\]+|\\\\\'|\\\\)* \'   |
+            `   (?> [^`]+ | ``)*              `   |   # backticks
+            /\* .*?                          \*/      # comments
+        ';
+    }
+
+
+    protected function _performTransaction($parameters=null)
+    {
+        return $this->query('BEGIN');
+    }
+
+
+    protected function _performCommit()
+    {
+        return $this->query('COMMIT');
+    }
+
+
+    protected function _performRollback()
+    {
+        return $this->query('ROLLBACK');
+    }
+
+
+    protected function _performTransformQuery(&$queryMain, $how)
+    {
+        // If we also need to calculate total number of found rows...
+        switch ($how)
+        {
+            // Prepare total calculation (if possible)
+            case 'CALC_TOTAL':
+                $m = null;
+                if (preg_match('/^(\s* SELECT)(.*)/six', $queryMain[0], $m))
+                    $queryMain[0] = $m[1] . ' SQL_CALC_FOUND_ROWS' . $m[2];
+                return true;
+
+            // Perform total calculation.
+            case 'GET_TOTAL':
+                // Built-in calculation available?
+                $queryMain = array('SELECT FOUND_ROWS()');
+                return true;
+        }
+
+        return false;
+    }
+
+
+    protected function _performQuery($queryMain)
+    {
+        $this->_lastQuery = $queryMain;
+        $this->_expandPlaceholders($queryMain, false);
+        $result = mysql_query($queryMain[0], $this->link);
+        if ($result === false)
+            return $this->_setDbError($queryMain[0]);
+        if (!is_resource($result)) {
+            if (preg_match('/^\s* INSERT \s+/six', $queryMain[0]))
+            {
+                // INSERT queries return generated ID.
+                return mysql_insert_id($this->link);
+            }
+            // Non-SELECT queries return number of affected rows, SELECT - resource.
+            return mysql_affected_rows($this->link);
+        }
+        return $result;
+    }
+
+
+    protected function _performFetch($result)
+    {
+        $row = mysql_fetch_assoc($result);
+        if (mysql_error()) return $this->_setDbError($this->_lastQuery);
+        if ($row === false) return null;
+        return $row;
+    }
+
+
+    protected function _setDbError($query)
+    {
+    	if ($this->link) {
+	        return $this->_setLastError(mysql_errno($this->link), mysql_error($this->link), $query);
+	    } else {
+	        return $this->_setLastError(mysql_errno(), mysql_error(), $query);
+	    }
+    }
+}
+
+
+class DbSimple_Mysql_Blob implements DbSimple_Blob
+{
+    // MySQL does not support separate BLOB fetching.
+    private $blobdata = null;
+    private $curSeek = 0;
+
+    public function __construct(&$database, $blobdata=null)
+    {
+        $this->blobdata = $blobdata;
+        $this->curSeek = 0;
+    }
+
+    public function read($len)
+    {
+        $p = $this->curSeek;
+        $this->curSeek = min($this->curSeek + $len, strlen($this->blobdata));
+        return substr($this->blobdata, $p, $len);
+    }
+
+    public function write($data)
+    {
+        $this->blobdata .= $data;
+    }
+
+    public function close()
+    {
+        return $this->blobdata;
+    }
+
+    public function length()
+    {
+        return strlen($this->blobdata);
+    }
+}
+?>