d8d8ca5ed3
hard coded enums values for all tables because enum feature doesn't exists for SQLite. git-svn-id: http://piwigo.org/svn/trunk@6153 68402e56-0260-453c-a942-63ccdbb3a9ee
607 lines
13 KiB
PHP
607 lines
13 KiB
PHP
<?php
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// +-----------------------------------------------------------------------+
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// | Piwigo - a PHP based picture gallery |
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// +-----------------------------------------------------------------------+
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// | Copyright(C) 2008-2010 Piwigo Team http://piwigo.org |
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// | Copyright(C) 2003-2008 PhpWebGallery Team http://phpwebgallery.net |
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// | Copyright(C) 2002-2003 Pierrick LE GALL http://le-gall.net/pierrick |
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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 |
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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., 59 Temple Place - Suite 330, Boston, MA 02111-1307, |
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// | USA. |
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// +-----------------------------------------------------------------------+
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define('REQUIRED_SQLITE_VERSION', '3.0.0');
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define('DB_ENGINE', 'SQLite');
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define('DB_REGEX_OPERATOR', 'REGEXP');
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define('DB_RANDOM_FUNCTION', 'RANDOM');
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/**
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*
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* simple functions
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*
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*/
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function pwg_db_connect($host, $user, $password, $database)
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{
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global $conf;
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$db_file = sprintf('%s/%s.db', $conf['local_data_dir'], $database);
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if (script_basename()=='install')
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{
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$sqlite_open_mode = SQLITE3_OPEN_READWRITE | SQLITE3_OPEN_CREATE;
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}
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else
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{
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$sqlite_open_mode = SQLITE3_OPEN_READWRITE;
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}
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$link = new SQLite3($db_file, $sqlite_open_mode);
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if (!$link)
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{
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throw new Exception('Connection to server succeed, but it was impossible to connect to database');
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}
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$link->createFunction('now', 'pwg_now', 0);
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$link->createFunction('unix_timestamp', 'pwg_unix_timestamp', 0);
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$link->createFunction('md5', 'md5', 1);
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$link->createFunction('if', 'pwg_if', 3);
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$link->createFunction('regexp', 'pwg_regexp', 2);
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return $link;
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}
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function pwg_db_check_version()
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{
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$current_version = pwg_get_db_version();
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if (version_compare($current_version, REQUIRED_SQLITE_VERSION, '<'))
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{
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fatal_error(
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sprintf(
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'your database version is too old, you have "%s" and you need at least "%s"',
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$current_version,
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REQUIRED_SQLITE_VERSION
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)
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);
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}
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}
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function pwg_db_check_charset()
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{
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return true;
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}
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function pwg_get_db_version()
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{
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global $pwg_db_link;
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$versionInfos = $pwg_db_link->version();
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return $versionInfos['versionString'];
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}
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function pwg_query($query)
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{
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global $conf,$page,$debug,$t2,$pwg_db_link;
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$start = get_moment();
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$truncate_pattern = '`truncate(.*)`i';
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$insert_pattern = '`(INSERT INTO [^)]*\)\s*VALUES)(\([^)]*\))\s*,\s*(.*)`mi';
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if (preg_match($truncate_pattern, $query, $matches))
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{
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$query = str_replace('TRUNCATE TABLE', 'DELETE FROM', $query);
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$truncate_query = true;
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($result = $pwg_db_link->exec($query)) or die($query."\n<br>".$pwg_db_link->lastErrorMsg());
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}
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elseif (preg_match($insert_pattern, $query, $matches))
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{
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$base_query = substr($query, 0, strlen($matches[1])+1);
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$values_pattern = '`\)\s*,\s*\(`';
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$values = preg_split($values_pattern, substr($query, strlen($matches[1])+1));
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$values[0] = substr($values[0], 1);
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$values[count($values)-1] = substr($values[count($values)-1],
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0,
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strlen($values[count($values)-1])-1
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);
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for ($n=0;$n<count($values);$n++)
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{
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$query = $base_query . '('. $values[$n] . ")\n;";
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($result = $pwg_db_link->query($query))
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or die($query."\n<br>".$pwg_db_link->lastErrorMsg());
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}
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}
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else
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{
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($result = $pwg_db_link->query($query))
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or die($query."\n<br>".$pwg_db_link->lastErrorMsg());
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}
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$time = get_moment() - $start;
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if (!isset($page['count_queries']))
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{
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$page['count_queries'] = 0;
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$page['queries_time'] = 0;
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}
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$page['count_queries']++;
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$page['queries_time']+= $time;
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if ($conf['show_queries'])
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{
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$output = '';
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$output.= '<pre>['.$page['count_queries'].'] ';
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$output.= "\n".$query;
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$output.= "\n".'(this query time : ';
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$output.= '<b>'.number_format($time, 3, '.', ' ').' s)</b>';
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$output.= "\n".'(total SQL time : ';
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$output.= number_format($page['queries_time'], 3, '.', ' ').' s)';
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$output.= "\n".'(total time : ';
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$output.= number_format( ($time+$start-$t2), 3, '.', ' ').' s)';
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if ( $result!=null and preg_match('/\s*SELECT\s+/i',$query) )
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{
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$output.= "\n".'(num rows : ';
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$output.= pwg_db_num_rows($result).' )';
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}
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elseif ( $result!=null
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and preg_match('/\s*INSERT|UPDATE|REPLACE|DELETE\s+/i',$query)
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and !isset($truncate_query))
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{
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$output.= "\n".'(affected rows : ';
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$output.= pwg_db_changes($result).' )';
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}
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$output.= "</pre>\n";
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$debug .= $output;
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}
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return $result;
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}
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function pwg_db_nextval($column, $table)
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{
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$query = '
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SELECT MAX('.$column.')+1
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FROM '.$table;
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list($next) = pwg_db_fetch_row(pwg_query($query));
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if (is_null($next))
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{
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$next = 1;
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}
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return $next;
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}
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/**
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*
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* complex functions
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*
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*/
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function pwg_db_changes(SQLite3Result $result=null)
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{
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global $pwg_db_link;
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return $pwg_db_link->changes();
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}
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function pwg_db_num_rows($result)
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{
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return $result->numColumns();
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}
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function pwg_db_fetch_assoc($result)
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{
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return $result->fetchArray(SQLITE3_ASSOC);
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}
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function pwg_db_fetch_row($result)
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{
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return $result->fetchArray(SQLITE3_NUM);
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}
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function pwg_db_fetch_object($result)
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{
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return $result;
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}
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function pwg_db_free_result($result)
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{
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}
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function pwg_db_real_escape_string($s)
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{
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global $pwg_db_link;
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return $pwg_db_link->escapeString($s);
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}
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function pwg_db_insert_id($table=null, $column='id')
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{
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global $pwg_db_link;
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return $pwg_db_link->lastInsertRowID();
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}
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/**
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*
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* complex functions
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*
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*/
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/**
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* creates an array based on a query, this function is a very common pattern
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* used here
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*
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* @param string $query
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* @param string $fieldname
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* @return array
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*/
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function array_from_query($query, $fieldname)
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{
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$array = array();
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$result = pwg_query($query);
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while ($row = pwg_db_fetch_assoc($result))
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{
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array_push($array, $row[$fieldname]);
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}
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return $array;
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}
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define('MASS_UPDATES_SKIP_EMPTY', 1);
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/**
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* updates multiple lines in a table
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*
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* @param string table_name
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* @param array dbfields
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* @param array datas
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* @param int flags - if MASS_UPDATES_SKIP_EMPTY - empty values do not overwrite existing ones
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* @return void
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*/
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function mass_updates($tablename, $dbfields, $datas, $flags=0)
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{
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if (count($datas) == 0)
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return;
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foreach ($datas as $data)
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{
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$query = '
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UPDATE '.$tablename.'
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SET ';
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$is_first = true;
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foreach ($dbfields['update'] as $key)
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{
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$separator = $is_first ? '' : ",\n ";
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if (isset($data[$key]) and $data[$key] != '')
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{
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$query.= $separator.$key.' = \''.$data[$key].'\'';
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}
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else
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{
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if ($flags & MASS_UPDATES_SKIP_EMPTY )
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continue; // next field
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$query.= "$separator$key = NULL";
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}
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$is_first = false;
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}
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if (!$is_first)
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{// only if one field at least updated
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$query.= '
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WHERE ';
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$is_first = true;
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foreach ($dbfields['primary'] as $key)
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{
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if (!$is_first)
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{
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$query.= ' AND ';
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}
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if ( isset($data[$key]) )
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{
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$query.= $key.' = \''.$data[$key].'\'';
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}
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else
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{
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$query.= $key.' IS NULL';
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}
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$is_first = false;
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}
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pwg_query($query);
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}
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}
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}
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/**
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* inserts multiple lines in a table
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*
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* @param string table_name
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* @param array dbfields
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* @param array inserts
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* @return void
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*/
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function mass_inserts($table_name, $dbfields, $datas)
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{
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if (count($datas) != 0)
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{
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$first = true;
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$packet_size = 16777216;
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$packet_size = $packet_size - 2000; // The last list of values MUST not exceed 2000 character*/
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$query = '';
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foreach ($datas as $insert)
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{
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if (strlen($query) >= $packet_size)
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{
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pwg_query($query);
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$first = true;
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}
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if ($first)
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{
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$query = '
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INSERT INTO '.$table_name.'
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('.implode(',', $dbfields).')
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VALUES';
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$first = false;
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}
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else
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{
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$query .= '
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, ';
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}
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$query .= '(';
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foreach ($dbfields as $field_id => $dbfield)
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{
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if ($field_id > 0)
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{
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$query .= ',';
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}
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if (!isset($insert[$dbfield]) or $insert[$dbfield] === '')
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{
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$query .= 'NULL';
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}
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else
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{
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$query .= "'".$insert[$dbfield]."'";
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}
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}
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$query .= ')';
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}
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pwg_query($query);
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}
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}
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/**
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* Do maintenance on all PWG tables
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*
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* @return none
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*/
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function do_maintenance_all_tables()
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{
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global $prefixeTable, $page;
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$all_tables = array();
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// List all tables
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$query = 'SELECT name FROM SQLITE_MASTER
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WHERE name LIKE \''.$prefixeTable.'%\'';
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$all_tables = array_from_query($query, 'name');
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foreach ($all_tables as $table_name)
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{
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$query = 'VACUUM '.$table_name.';';
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$result = pwg_query($query);
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}
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array_push($page['infos'],
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l10n('All optimizations have been successfully completed.')
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);
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}
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function pwg_db_concat($array)
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{
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return implode($array, ' || ');
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}
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function pwg_db_concat_ws($array, $separator)
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{
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$glue = sprintf(' || \'%s\' || ', $separator);
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return implode($array, $glue);
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}
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function pwg_db_cast_to_text($string)
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{
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return $string;
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}
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/**
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* returns an array containing the possible values of an enum field
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*
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* @param string tablename
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* @param string fieldname
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*/
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function get_enums($table, $field)
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{
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$Enums['categories']['status'] = array('public', 'private');
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$Enums['history']['section'] = array('categories','tags','search','list','favorites','most_visited','best_rated','recent_pics','recent_cats');
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$Enums['user_infos']['status'] = array('webmaster','admin','normal','generic','guest');
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$Enums['image']['type'] = array('picture','high','other');
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$Enums['plugins']['state'] = array('active', 'inactive');
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$Enums['user_cache_image']['access_type'] = array('NOT IN','IN');
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$table = str_replace($GLOBALS['prefixeTable'], '', $table);
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if (isset($Enums[$table][$field])) {
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return $Enums[$table][$field];
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} else {
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return array();
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}
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}
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// get_boolean transforms a string to a boolean value. If the string is
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// "false" (case insensitive), then the boolean value false is returned. In
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// any other case, true is returned.
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function get_boolean( $string )
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{
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$boolean = true;
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if ('f' === $string || 'false' === $string)
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{
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$boolean = false;
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}
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return $boolean;
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}
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/**
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* returns boolean string 'true' or 'false' if the given var is boolean
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*
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* @param mixed $var
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* @return mixed
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*/
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function boolean_to_string($var)
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{
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if (!empty($var) && ($var == 'true'))
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{
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return 'true';
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}
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else
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{
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return 'false';
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}
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}
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/**
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*
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* interval and date functions
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*
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*/
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function pwg_db_get_recent_period_expression($period, $date='CURRENT_DATE')
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{
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if ($date!='CURRENT_DATE')
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{
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$date = '\''.$date.'\'';
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}
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return 'date('.$date.',\''.-$period.' DAY\')';
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}
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function pwg_db_get_recent_period($period, $date='CURRENT_DATE')
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{
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$query = 'select '.pwg_db_get_recent_period_expression($period, $date);
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list($d) = pwg_db_fetch_row(pwg_query($query));
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return $d;
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}
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function pwg_db_get_date_YYYYMM($date)
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{
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return 'strftime(\'%Y%m\','.$date.')';
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}
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function pwg_db_get_date_MMDD($date)
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{
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return 'strftime(\'%m%d\','.$date.')';
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}
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function pwg_db_get_year($date)
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{
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return 'strftime(\'%Y\','.$date.')';
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}
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function pwg_db_get_month($date)
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{
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return 'strftime(\'%m\','.$date.')';
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}
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function pwg_db_get_week($date, $mode=null)
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{
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return 'strftime(\'%W\','.$date.')';
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}
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function pwg_db_get_dayofmonth($date)
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{
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return 'strftime(\'%d\','.$date.')';
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}
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function pwg_db_get_dayofweek($date)
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{
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return 'strftime(\'%w\','.$date.')';
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}
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function pwg_db_get_weekday($date)
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{
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return 'strftime(\'%w\',date('.$date.',\'-1 DAY\'))';
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}
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// my_error returns (or send to standard output) the message concerning the
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// error occured for the last mysql query.
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function my_error($header, $die)
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{
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global $pwg_db_link;
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$error = '';
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if (isset($pwg_db_link))
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{
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$error .= '[sqlite error]'.$pwg_db_link->lastErrorMsg()."\n";
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}
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|
|
$error .= $header;
|
|
|
|
if ($die)
|
|
{
|
|
fatal_error($error);
|
|
}
|
|
echo("<pre>");
|
|
trigger_error($error, E_USER_WARNING);
|
|
echo("</pre>");
|
|
}
|
|
|
|
// sqlite create functions
|
|
function pwg_now()
|
|
{
|
|
return date('Y-m-d H:i:s');
|
|
}
|
|
|
|
function pwg_unix_timestamp()
|
|
{
|
|
return time();
|
|
}
|
|
|
|
function pwg_if($expression, $value1, $value2)
|
|
{
|
|
if ($expression)
|
|
{
|
|
return $value1;
|
|
}
|
|
else
|
|
{
|
|
return $value2;
|
|
}
|
|
}
|
|
|
|
function pwg_regexp($pattern, $string)
|
|
{
|
|
$pattern = sprintf('`%s`', $pattern);
|
|
return preg_match($pattern, $string);
|
|
}
|
|
?>
|