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https://github.com/Pathduck/gallery3.git
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92 lines
3.4 KiB
PHP
92 lines
3.4 KiB
PHP
<?php defined("SYSPATH") or die("No direct script access.");
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/**
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* Gallery - a web based photo album viewer and editor
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* Copyright (C) 2000-2008 Bharat Mediratta
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2 of the License, or (at
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* your option) any later version.
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*
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* This program is distributed in the hope that it will be useful, but
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* WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 51 Franklin Street - Fifth Floor, Boston, MA 02110-1301, USA.
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*/
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class Database extends Database_Core {
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protected $_table_names;
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public function open_paren() {
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$this->where[] = "(";
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return $this;
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}
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public function close_paren() {
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// Search backwards for the last opening paren and resolve it
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$i = count($this->where) - 1;
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$this->where[$i] .= ")";
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while (--$i >= 0) {
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if ($this->where[$i] == "(") {
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// Remove the paren from the where clauses, and add it to the right of the operator of the
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// next where clause. If removing the paren makes the next where clause the first element
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// in the where list, then the operator shouldn't be there. It's there because we
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// calculate whether or not we need an operator based on the number of where clauses, and
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// the open paren seems like a where clause even though it isn't.
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array_splice($this->where, $i, 1);
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$this->where[$i] = preg_replace("/^(AND|OR) /", $i ? "\\1 (" : "(", $this->where[$i]);
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return $this;
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}
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}
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throw new Kohana_Database_Exception('database.missing_open_paren');
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}
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/**
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* Parse the query string and convert any strings of the form `\([a-zA-Z0-9_]*?)\]
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* table prefix . $1
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*/
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public function query($sql = '') {
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if (!empty($sql)) {
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$sql = $this->add_table_prefixes($sql);
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}
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return parent::query($sql);
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}
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public function add_table_prefixes($sql) {
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$prefix = $this->config["table_prefix"];
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if (strpos($sql, "SHOW TABLES") === 0) {
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/*
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* Don't ignore "show tables", otherwise we could have a infinite
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* @todo this may have to be changed if we support more than mysql
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*/
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return $sql;
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} else if (strpos($sql, "CREATE TABLE") === 0) {
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// Creating a new table add it to the table cache.
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$open_brace = strpos($sql, "{") + 1;
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$close_brace = strpos($sql, "}", $open_brace);
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$name = substr($sql, $open_brace, $close_brace - $open_brace);
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$this->_table_names["{{$name}}"] = "{$prefix}$name";
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}
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if (!isset($this->_table_names)) {
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// This should only run once on the first query
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$this->_table_names =array();
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$len = strlen($prefix);
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foreach($this->list_tables() as $table_name) {
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if ($len > 0) {
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$naked_name = strpos($table_name, $prefix) !== 0 ?
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$table_name : substr($table_name, $len);
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} else {
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$naked_name = $table_name;
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}
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$this->_table_names["{{$naked_name}}"] = $table_name;
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}
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}
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return empty($this->_table_names) ? $sql : strtr($sql, $this->_table_names);
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}
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} |