Merge branch 'pdo'

Conflicts:
	CHANGELOG

1 files changed, 154 insertions, 0 deletions

diff --git a/program/include/rcube_db_mysql.php b/program/include/rcube_db_mysql.php
new file mode 100644
index 000000000..3606ec102
--- /dev/null
+++ b/program/include/rcube_db_mysql.php
@@ -0,0 +1,154 @@
+<?php
+
+/**
+ +-----------------------------------------------------------------------+
+ | program/include/rcube_db_mysql.php                                    |
+ |                                                                       |
+ | This file is part of the Roundcube Webmail client                     |
+ | Copyright (C) 2005-2012, The Roundcube Dev Team                       |
+ |                                                                       |
+ | Licensed under the GNU General Public License version 3 or            |
+ | any later version with exceptions for skins & plugins.                |
+ | See the README file for a full license statement.                     |
+ |                                                                       |
+ | PURPOSE:                                                              |
+ |   Database wrapper class that implements PHP PDO functions            |
+ |   for MySQL database                                                  |
+ |                                                                       |
+ +-----------------------------------------------------------------------+
+ | Author: Aleksander Machniak <alec@alec.pl>                            |
+ +-----------------------------------------------------------------------+
+*/
+
+
+/**
+ * Database independent query interface
+ *
+ * This is a wrapper for the PHP PDO
+ *
+ * @package Database
+ * @version 1.0
+ */
+class rcube_db_mysql extends rcube_db
+{
+    /**
+     * Driver initialization/configuration
+     */
+    protected function init()
+    {
+        // SQL identifiers quoting
+        $this->options['identifier_start'] = '`';
+        $this->options['identifier_end'] = '`';
+    }
+
+    /**
+     * Abstract SQL statement for value concatenation
+     *
+     * @return string SQL statement to be used in query
+     */
+    public function concat(/* col1, col2, ... */)
+    {
+        $args = func_get_args();
+
+        if (is_array($args[0])) {
+            $args = $args[0];
+        }
+
+        return 'CONCAT(' . join(', ', $args) . ')';
+    }
+
+    /**
+     * Returns PDO DSN string from DSN array
+     *
+     * @param array $dsn DSN parameters
+     *
+     * @return string Connection string
+     */
+    protected function dsn_string($dsn)
+    {
+        $params = array();
+        $result = 'mysql:';
+
+        if ($dsn['database']) {
+            $params[] = 'dbname=' . $dsn['database'];
+        }
+
+        if ($dsn['hostspec']) {
+            $params[] = 'host=' . $dsn['hostspec'];
+        }
+
+        if ($dsn['port']) {
+            $params[] = 'port=' . $dsn['port'];
+        }
+
+        if ($dsn['socket']) {
+            $params[] = 'unix_socket=' . $dsn['socket'];
+        }
+
+        $params[] = 'charset=utf8';
+
+        if (!empty($params)) {
+            $result .= implode(';', $params);
+        }
+
+        return $result;
+    }
+
+    /**
+     * Returns driver-specific connection options
+     *
+     * @param array $dsn DSN parameters
+     *
+     * @return array Connection options
+     */
+    protected function dsn_options($dsn)
+    {
+        $result = array();
+
+        if (!empty($dsn['key'])) {
+            $result[PDO::MYSQL_ATTR_KEY] = $dsn['key'];
+        }
+
+        if (!empty($dsn['cipher'])) {
+            $result[PDO::MYSQL_ATTR_CIPHER] = $dsn['cipher'];
+        }
+
+        if (!empty($dsn['cert'])) {
+            $result[PDO::MYSQL_ATTR_SSL_CERT] = $dsn['cert'];
+        }
+
+        if (!empty($dsn['capath'])) {
+            $result[PDO::MYSQL_ATTR_SSL_CAPATH] = $dsn['capath'];
+        }
+
+        if (!empty($dsn['ca'])) {
+            $result[PDO::MYSQL_ATTR_SSL_CA] = $dsn['ca'];
+        }
+
+        return $result;
+    }
+
+    /**
+     * Get database runtime variables
+     *
+     * @param string $varname Variable name
+     * @param mixed  $default Default value if variable is not set
+     *
+     * @return mixed Variable value or default
+     */
+    public function get_variable($varname, $default = null)
+    {
+        if (!isset($this->variables)) {
+            $this->variables = array();
+
+            $result = $this->query('SHOW VARIABLES');
+
+            while ($sql_arr = $this->fetch_array($result)) {
+                $this->variables[$row[0]] = $row[1];
+            }
+        }
+
+        return isset($this->variables[$varname]) ? $this->variables[$varname] : $default;
+    }
+
+}