mirror of
https://github.com/YunoHost-Apps/piwigo_ynh.git
synced 2024-09-03 20:06:03 +02:00
1372 lines
39 KiB
PHP
1372 lines
39 KiB
PHP
<?php
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// +-----------------------------------------------------------------------+
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// | Piwigo - a PHP based photo gallery |
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// +-----------------------------------------------------------------------+
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// | Copyright(C) 2008-2016 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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/**
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* @package functions\search
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*/
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/**
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* Returns search rules stored into a serialized array in "search"
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* table. Each search rules set is numericaly identified.
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*
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* @param int $search_id
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* @return array
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*/
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function get_search_array($search_id)
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{
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if (!is_numeric($search_id))
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{
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die('Search id must be an integer');
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}
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$query = '
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SELECT rules
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FROM '.SEARCH_TABLE.'
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WHERE id = '.$search_id.'
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;';
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list($serialized_rules) = pwg_db_fetch_row(pwg_query($query));
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return unserialize($serialized_rules);
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}
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/**
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* Returns the SQL clause for a search.
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* Transforms the array returned by get_search_array() into SQL sub-query.
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*
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* @param array $search
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* @return string
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*/
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function get_sql_search_clause($search)
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{
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// SQL where clauses are stored in $clauses array during query
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// construction
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$clauses = array();
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foreach (array('file','name','comment','author') as $textfield)
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{
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if (isset($search['fields'][$textfield]))
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{
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$local_clauses = array();
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foreach ($search['fields'][$textfield]['words'] as $word)
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{
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if ('author' == $textfield)
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{
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$local_clauses[] = $textfield."='".$word."'";
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}
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else
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{
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$local_clauses[] = $textfield." LIKE '%".$word."%'";
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}
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}
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// adds brackets around where clauses
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$local_clauses = prepend_append_array_items($local_clauses, '(', ')');
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$clauses[] = implode(
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' '.$search['fields'][$textfield]['mode'].' ',
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$local_clauses
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);
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}
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}
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if (isset($search['fields']['allwords']) and count($search['fields']['allwords']['fields']) > 0)
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{
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$fields = array('file', 'name', 'comment');
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if (isset($search['fields']['allwords']['fields']) and count($search['fields']['allwords']['fields']) > 0)
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{
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$fields = array_intersect($fields, $search['fields']['allwords']['fields']);
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}
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// in the OR mode, request bust be :
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// ((field1 LIKE '%word1%' OR field2 LIKE '%word1%')
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// OR (field1 LIKE '%word2%' OR field2 LIKE '%word2%'))
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//
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// in the AND mode :
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// ((field1 LIKE '%word1%' OR field2 LIKE '%word1%')
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// AND (field1 LIKE '%word2%' OR field2 LIKE '%word2%'))
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$word_clauses = array();
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foreach ($search['fields']['allwords']['words'] as $word)
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{
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$field_clauses = array();
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foreach ($fields as $field)
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{
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$field_clauses[] = $field." LIKE '%".$word."%'";
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}
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// adds brackets around where clauses
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$word_clauses[] = implode(
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"\n OR ",
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$field_clauses
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);
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}
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array_walk(
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$word_clauses,
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create_function('&$s','$s="(".$s.")";')
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);
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// make sure the "mode" is either OR or AND
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if ($search['fields']['allwords']['mode'] != 'AND' and $search['fields']['allwords']['mode'] != 'OR')
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{
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$search['fields']['allwords']['mode'] = 'AND';
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}
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$clauses[] = "\n ".
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implode(
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"\n ". $search['fields']['allwords']['mode']. "\n ",
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$word_clauses
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);
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}
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foreach (array('date_available', 'date_creation') as $datefield)
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{
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if (isset($search['fields'][$datefield]))
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{
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$clauses[] = $datefield." = '".$search['fields'][$datefield]['date']."'";
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}
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foreach (array('after','before') as $suffix)
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{
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$key = $datefield.'-'.$suffix;
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if (isset($search['fields'][$key]))
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{
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$clauses[] = $datefield.
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($suffix == 'after' ? ' >' : ' <').
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($search['fields'][$key]['inc'] ? '=' : '').
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" '".$search['fields'][$key]['date']."'";
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}
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}
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}
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if (isset($search['fields']['cat']))
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{
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if ($search['fields']['cat']['sub_inc'])
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{
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// searching all the categories id of sub-categories
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$cat_ids = get_subcat_ids($search['fields']['cat']['words']);
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}
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else
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{
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$cat_ids = $search['fields']['cat']['words'];
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}
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$local_clause = 'category_id IN ('.implode(',', $cat_ids).')';
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$clauses[] = $local_clause;
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}
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// adds brackets around where clauses
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$clauses = prepend_append_array_items($clauses, '(', ')');
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$where_separator =
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implode(
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"\n ".$search['mode'].' ',
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$clauses
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);
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$search_clause = $where_separator;
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return $search_clause;
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}
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/**
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* Returns the list of items corresponding to the advanced search array.
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*
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* @param array $search
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* @param string $images_where optional additional restriction on images table
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* @return array
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*/
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function get_regular_search_results($search, $images_where='')
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{
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global $conf, $logger;
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$logger->debug(__FUNCTION__, 'search', $search);
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$forbidden = get_sql_condition_FandF(
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array
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(
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'forbidden_categories' => 'category_id',
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'visible_categories' => 'category_id',
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'visible_images' => 'id'
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),
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"\n AND"
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);
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$items = array();
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$tag_items = array();
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if (isset($search['fields']['search_in_tags']))
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{
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$word_clauses = array();
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foreach ($search['fields']['allwords']['words'] as $word)
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{
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$word_clauses[] = "name LIKE '%".$word."%'";
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}
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$query = '
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SELECT
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id
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FROM '.TAGS_TABLE.'
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WHERE '.implode(' OR ', $word_clauses).'
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;';
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$tag_ids = query2array($query, null, 'id');
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$search_in_tags_items = get_image_ids_for_tags($tag_ids, 'OR');
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$logger->debug(__FUNCTION__.' '.count($search_in_tags_items).' items in $search_in_tags_items');
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}
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if (isset($search['fields']['tags']))
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{
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$tag_items = get_image_ids_for_tags(
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$search['fields']['tags']['words'],
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$search['fields']['tags']['mode']
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);
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$logger->debug(__FUNCTION__.' '.count($tag_items).' items in $tag_items');
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}
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$search_clause = get_sql_search_clause($search);
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if (!empty($search_clause))
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{
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$query = '
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SELECT DISTINCT(id)
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FROM '.IMAGES_TABLE.' i
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INNER JOIN '.IMAGE_CATEGORY_TABLE.' AS ic ON id = ic.image_id
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WHERE '.$search_clause;
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if (!empty($images_where))
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{
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$query .= "\n AND ".$images_where;
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}
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$query .= $forbidden.'
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'.$conf['order_by'];
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$items = array_from_query($query, 'id');
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$logger->debug(__FUNCTION__.' '.count($items).' items in $items');
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}
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if (isset($search_in_tags_items))
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{
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$items = array_unique(
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array_merge(
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$items,
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$search_in_tags_items
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)
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);
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}
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if ( !empty($tag_items) )
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{
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switch ($search['mode'])
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{
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case 'AND':
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if (empty($search_clause) and !isset($search_in_tags_items))
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{
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$items = $tag_items;
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}
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else
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{
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$items = array_values( array_intersect($items, $tag_items) );
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}
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break;
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case 'OR':
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$items = array_unique(
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array_merge(
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$items,
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$tag_items
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)
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);
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break;
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}
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}
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return $items;
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}
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define('QST_QUOTED', 0x01);
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define('QST_NOT', 0x02);
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define('QST_OR', 0x04);
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define('QST_WILDCARD_BEGIN', 0x08);
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define('QST_WILDCARD_END', 0x10);
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define('QST_WILDCARD', QST_WILDCARD_BEGIN|QST_WILDCARD_END);
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define('QST_BREAK', 0x20);
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/**
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* A search scope applies to a single token and restricts the search to a subset of searchable fields.
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*/
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class QSearchScope
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{
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var $id;
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var $aliases;
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var $is_text;
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var $nullable;
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function __construct($id, $aliases, $nullable=false, $is_text=true)
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{
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$this->id = $id;
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$this->aliases = $aliases;
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$this->is_text = $is_text;
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$this->nullable =$nullable;
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}
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function parse($token)
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{
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if (!$this->nullable && 0==strlen($token->term))
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return false;
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return true;
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}
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function process_char(&$ch, &$crt_token)
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{
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return false;
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}
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}
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class QNumericRangeScope extends QSearchScope
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{
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private $epsilon;
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function __construct($id, $aliases, $nullable=false, $epsilon=0)
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{
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parent::__construct($id, $aliases, $nullable, false);
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$this->epsilon = $epsilon;
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}
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function parse($token)
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{
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$str = $token->term;
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$strict = array(0,0);
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if ( ($pos = strpos($str, '..')) !== false)
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$range = array( substr($str,0,$pos), substr($str, $pos+2));
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elseif ('>' == @$str[0])// ratio:>1
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{
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$range = array( substr($str,1), '');
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$strict[0] = 1;
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}
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elseif ('<' == @$str[0]) // size:<5mp
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{
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$range = array('', substr($str,1));
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$strict[1] = 1;
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}
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elseif( ($token->modifier & QST_WILDCARD_BEGIN) )
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$range = array('', $str);
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elseif( ($token->modifier & QST_WILDCARD_END) )
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$range = array($str, '');
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else
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$range = array($str, $str);
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foreach ($range as $i =>&$val)
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{
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if (preg_match('#^(-?[0-9.]+)/([0-9.]+)$#i', $val, $matches))
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{
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$val = floatval($matches[1]/$matches[2]);
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}
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elseif (preg_match('/^(-?[0-9.]+)([km])?/i', $val, $matches))
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{
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$val = floatval($matches[1]);
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if (isset($matches[2]))
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{
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if ($matches[2]=='k' || $matches[2]=='K')
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{
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$val *= 1000;
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if ($i) $val += 999;
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}
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if ($matches[2]=='m' || $matches[2]=='M')
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{
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$val *= 1000000;
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if ($i) $val += 999999;
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}
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}
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}
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else
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$val = '';
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if (is_numeric($val))
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{
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if ($i ^ $strict[$i])
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$val += $this->epsilon;
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else
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$val -= $this->epsilon;
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}
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}
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if (!$this->nullable && $range[0]=='' && $range[1] == '')
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return false;
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$token->scope_data = array( 'range'=>$range, 'strict'=>$strict );
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return true;
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}
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function get_sql($field, $token)
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{
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$clauses = array();
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if ($token->scope_data['range'][0]!='')
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$clauses[] = $field.' >'.($token->scope_data['strict'][0]?'':'=').$token->scope_data['range'][0].' ';
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if ($token->scope_data['range'][1]!='')
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$clauses[] = $field.' <'.($token->scope_data['strict'][1]?'':'=').$token->scope_data['range'][1].' ';
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if (empty($clauses))
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{
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if ($token->modifier & QST_WILDCARD)
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return $field.' IS NOT NULL';
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else
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return $field.' IS NULL';
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}
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return '('.implode(' AND ', $clauses).')';
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}
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}
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class QDateRangeScope extends QSearchScope
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{
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function __construct($id, $aliases, $nullable=false)
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{
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parent::__construct($id, $aliases, $nullable, false);
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}
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function parse($token)
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{
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$str = $token->term;
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$strict = array(0,0);
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if ( ($pos = strpos($str, '..')) !== false)
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$range = array( substr($str,0,$pos), substr($str, $pos+2));
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elseif ('>' == @$str[0])
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{
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$range = array( substr($str,1), '');
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$strict[0] = 1;
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}
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elseif ('<' == @$str[0])
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{
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$range = array('', substr($str,1));
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$strict[1] = 1;
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}
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elseif( ($token->modifier & QST_WILDCARD_BEGIN) )
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$range = array('', $str);
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elseif( ($token->modifier & QST_WILDCARD_END) )
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$range = array($str, '');
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else
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$range = array($str, $str);
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foreach ($range as $i =>&$val)
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{
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if (preg_match('/([0-9]{4})-?((?:1[0-2])|(?:0?[1-9]))?-?((?:(?:[1-3][0-9])|(?:0?[1-9])))?/', $val, $matches))
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{
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array_shift($matches);
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if (!isset($matches[1]))
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$matches[1] = ($i ^ $strict[$i]) ? 12 : 1;
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if (!isset($matches[2]))
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$matches[2] = ($i ^ $strict[$i]) ? 31 : 1;
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$val = implode('-', $matches);
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if ($i ^ $strict[$i])
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$val .= ' 23:59:59';
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}
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elseif (strlen($val))
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return false;
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}
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if (!$this->nullable && $range[0]=='' && $range[1] == '')
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return false;
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$token->scope_data = $range;
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return true;
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}
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function get_sql($field, $token)
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{
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$clauses = array();
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if ($token->scope_data[0]!='')
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$clauses[] = $field.' >= \'' . $token->scope_data[0].'\'';
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if ($token->scope_data[1]!='')
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$clauses[] = $field.' <= \'' . $token->scope_data[1].'\'';
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if (empty($clauses))
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{
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if ($token->modifier & QST_WILDCARD)
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return $field.' IS NOT NULL';
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else
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return $field.' IS NULL';
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}
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return '('.implode(' AND ', $clauses).')';
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}
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}
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/**
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* Analyzes and splits the quick/query search query $q into tokens.
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* q='john bill' => 2 tokens 'john' 'bill'
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* Special characters for MySql full text search (+,<,>,~) appear in the token modifiers.
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* The query can contain a phrase: 'Pierre "New York"' will return 'pierre' qnd 'new york'.
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*
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* @param string $q
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*/
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|
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/** Represents a single word or quoted phrase to be searched.*/
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class QSingleToken
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{
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var $is_single = true;
|
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var $modifier;
|
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var $term; /* the actual word/phrase string*/
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var $variants = array();
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var $scope;
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var $scope_data;
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var $idx;
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|
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function __construct($term, $modifier, $scope)
|
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{
|
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$this->term = $term;
|
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$this->modifier = $modifier;
|
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$this->scope = $scope;
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}
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|
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function __toString()
|
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{
|
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$s = '';
|
|
if (isset($this->scope))
|
|
$s .= $this->scope->id .':';
|
|
if ($this->modifier & QST_WILDCARD_BEGIN)
|
|
$s .= '*';
|
|
if ($this->modifier & QST_QUOTED)
|
|
$s .= '"';
|
|
$s .= $this->term;
|
|
if ($this->modifier & QST_QUOTED)
|
|
$s .= '"';
|
|
if ($this->modifier & QST_WILDCARD_END)
|
|
$s .= '*';
|
|
return $s;
|
|
}
|
|
}
|
|
|
|
/** Represents an expression of several words or sub expressions to be searched.*/
|
|
class QMultiToken
|
|
{
|
|
var $is_single = false;
|
|
var $modifier;
|
|
var $tokens = array(); // the actual array of QSingleToken or QMultiToken
|
|
|
|
function __toString()
|
|
{
|
|
$s = '';
|
|
for ($i=0; $i<count($this->tokens); $i++)
|
|
{
|
|
$modifier = $this->tokens[$i]->modifier;
|
|
if ($i)
|
|
$s .= ' ';
|
|
if ($modifier & QST_OR)
|
|
$s .= 'OR ';
|
|
if ($modifier & QST_NOT)
|
|
$s .= 'NOT ';
|
|
if (! ($this->tokens[$i]->is_single) )
|
|
{
|
|
$s .= '(';
|
|
$s .= $this->tokens[$i];
|
|
$s .= ')';
|
|
}
|
|
else
|
|
{
|
|
$s .= $this->tokens[$i];
|
|
}
|
|
}
|
|
return $s;
|
|
}
|
|
|
|
private function push(&$token, &$modifier, &$scope)
|
|
{
|
|
if (strlen($token) || (isset($scope) && $scope->nullable))
|
|
{
|
|
if (isset($scope))
|
|
$modifier |= QST_BREAK;
|
|
$this->tokens[] = new QSingleToken($token, $modifier, $scope);
|
|
}
|
|
$token = "";
|
|
$modifier = 0;
|
|
$scope = null;
|
|
}
|
|
|
|
/**
|
|
* Parses the input query string by tokenizing the input, generating the modifiers (and/or/not/quotation/wildcards...).
|
|
* Recursivity occurs when parsing ()
|
|
* @param string $q the actual query to be parsed
|
|
* @param int $qi the character index in $q where to start parsing
|
|
* @param int $level the depth from root in the tree (number of opened and unclosed opening brackets)
|
|
*/
|
|
protected function parse_expression($q, &$qi, $level, $root)
|
|
{
|
|
$crt_token = "";
|
|
$crt_modifier = 0;
|
|
$crt_scope = null;
|
|
|
|
for ($stop=false; !$stop && $qi<strlen($q); $qi++)
|
|
{
|
|
$ch = $q[$qi];
|
|
if ( ($crt_modifier&QST_QUOTED)==0)
|
|
{
|
|
switch ($ch)
|
|
{
|
|
case '(':
|
|
if (strlen($crt_token))
|
|
$this->push($crt_token, $crt_modifier, $crt_scope);
|
|
$sub = new QMultiToken;
|
|
$qi++;
|
|
$sub->parse_expression($q, $qi, $level+1, $root);
|
|
$sub->modifier = $crt_modifier;
|
|
if (isset($crt_scope) && $crt_scope->is_text)
|
|
{
|
|
$sub->apply_scope($crt_scope); // eg. 'tag:(John OR Bill)'
|
|
}
|
|
$this->tokens[] = $sub;
|
|
$crt_modifier = 0;
|
|
$crt_scope = null;
|
|
break;
|
|
case ')':
|
|
if ($level>0)
|
|
$stop = true;
|
|
break;
|
|
case ':':
|
|
$scope = @$root->scopes[strtolower($crt_token)];
|
|
if (!isset($scope) || isset($crt_scope))
|
|
{ // white space
|
|
$this->push($crt_token, $crt_modifier, $crt_scope);
|
|
}
|
|
else
|
|
{
|
|
$crt_token = "";
|
|
$crt_scope = $scope;
|
|
}
|
|
break;
|
|
case '"':
|
|
if (strlen($crt_token))
|
|
$this->push($crt_token, $crt_modifier, $crt_scope);
|
|
$crt_modifier |= QST_QUOTED;
|
|
break;
|
|
case '-':
|
|
if (strlen($crt_token) || isset($crt_scope))
|
|
$crt_token .= $ch;
|
|
else
|
|
$crt_modifier |= QST_NOT;
|
|
break;
|
|
case '*':
|
|
if (strlen($crt_token))
|
|
$crt_token .= $ch; // wildcard end later
|
|
else
|
|
$crt_modifier |= QST_WILDCARD_BEGIN;
|
|
break;
|
|
case '.':
|
|
if (isset($crt_scope) && !$crt_scope->is_text)
|
|
{
|
|
$crt_token .= $ch;
|
|
break;
|
|
}
|
|
if (strlen($crt_token) && preg_match('/[0-9]/', substr($crt_token,-1))
|
|
&& $qi+1<strlen($q) && preg_match('/[0-9]/', $q[$qi+1]))
|
|
{// dot between digits is not a separator e.g. F2.8
|
|
$crt_token .= $ch;
|
|
break;
|
|
}
|
|
// else white space go on..
|
|
default:
|
|
if (!$crt_scope || !$crt_scope->process_char($ch, $crt_token))
|
|
{
|
|
if (strpos(' ,.;!?', $ch)!==false)
|
|
{ // white space
|
|
$this->push($crt_token, $crt_modifier, $crt_scope);
|
|
}
|
|
else
|
|
$crt_token .= $ch;
|
|
}
|
|
break;
|
|
}
|
|
}
|
|
else
|
|
{// quoted
|
|
if ($ch=='"')
|
|
{
|
|
if ($qi+1 < strlen($q) && $q[$qi+1]=='*')
|
|
{
|
|
$crt_modifier |= QST_WILDCARD_END;
|
|
$qi++;
|
|
}
|
|
$this->push($crt_token, $crt_modifier, $crt_scope);
|
|
}
|
|
else
|
|
$crt_token .= $ch;
|
|
}
|
|
}
|
|
|
|
$this->push($crt_token, $crt_modifier, $crt_scope);
|
|
|
|
for ($i=0; $i<count($this->tokens); $i++)
|
|
{
|
|
$token = $this->tokens[$i];
|
|
$remove = false;
|
|
if ($token->is_single)
|
|
{
|
|
if ( ($token->modifier & QST_QUOTED)==0
|
|
&& substr($token->term, -1)=='*' )
|
|
{
|
|
$token->term = rtrim($token->term, '*');
|
|
$token->modifier |= QST_WILDCARD_END;
|
|
}
|
|
|
|
if ( !isset($token->scope)
|
|
&& ($token->modifier & (QST_QUOTED|QST_WILDCARD))==0 )
|
|
{
|
|
if ('not' == strtolower($token->term))
|
|
{
|
|
if ($i+1 < count($this->tokens))
|
|
$this->tokens[$i+1]->modifier |= QST_NOT;
|
|
$token->term = "";
|
|
}
|
|
if ('or' == strtolower($token->term))
|
|
{
|
|
if ($i+1 < count($this->tokens))
|
|
$this->tokens[$i+1]->modifier |= QST_OR;
|
|
$token->term = "";
|
|
}
|
|
if ('and' == strtolower($token->term))
|
|
{
|
|
$token->term = "";
|
|
}
|
|
}
|
|
|
|
if (!strlen($token->term)
|
|
&& (!isset($token->scope) || !$token->scope->nullable) )
|
|
{
|
|
$remove = true;
|
|
}
|
|
|
|
if ( isset($token->scope)
|
|
&& !$token->scope->parse($token))
|
|
$remove = true;
|
|
}
|
|
elseif (!count($token->tokens))
|
|
{
|
|
$remove = true;
|
|
}
|
|
if ($remove)
|
|
{
|
|
array_splice($this->tokens, $i, 1);
|
|
if ($i<count($this->tokens) && $this->tokens[$i]->is_single)
|
|
{
|
|
$this->tokens[$i]->modifier |= QST_BREAK;
|
|
}
|
|
$i--;
|
|
}
|
|
}
|
|
|
|
if ($level>0 && count($this->tokens) && $this->tokens[0]->is_single)
|
|
{
|
|
$this->tokens[0]->modifier |= QST_BREAK;
|
|
}
|
|
}
|
|
|
|
/**
|
|
* Applies recursively a search scope to all sub single tokens. We allow 'tag:(John Bill)' but we cannot evaluate
|
|
* scopes on expressions so we rewrite as '(tag:John tag:Bill)'
|
|
*/
|
|
private function apply_scope(QSearchScope $scope)
|
|
{
|
|
for ($i=0; $i<count($this->tokens); $i++)
|
|
{
|
|
if ($this->tokens[$i]->is_single)
|
|
{
|
|
if (!isset($this->tokens[$i]->scope))
|
|
$this->tokens[$i]->scope = $scope;
|
|
}
|
|
else
|
|
$this->tokens[$i]->apply_scope($scope);
|
|
}
|
|
}
|
|
|
|
private static function priority($modifier)
|
|
{
|
|
return $modifier & QST_OR ? 0 :1;
|
|
}
|
|
|
|
/* because evaluations occur left to right, we ensure that 'a OR b c d' is interpreted as 'a OR (b c d)'*/
|
|
protected function check_operator_priority()
|
|
{
|
|
for ($i=0; $i<count($this->tokens); $i++)
|
|
{
|
|
if (!$this->tokens[$i]->is_single)
|
|
$this->tokens[$i]->check_operator_priority();
|
|
if ($i==1)
|
|
$crt_prio = self::priority($this->tokens[$i]->modifier);
|
|
if ($i<=1)
|
|
continue;
|
|
$prio = self::priority($this->tokens[$i]->modifier);
|
|
if ($prio > $crt_prio)
|
|
{// e.g. 'a OR b c d' i=2, operator(c)=AND -> prio(AND) > prio(OR) = operator(b)
|
|
$term_count = 2; // at least b and c to be regrouped
|
|
for ($j=$i+1; $j<count($this->tokens); $j++)
|
|
{
|
|
if (self::priority($this->tokens[$j]->modifier) >= $prio)
|
|
$term_count++; // also take d
|
|
else
|
|
break;
|
|
}
|
|
|
|
$i--; // move pointer to b
|
|
// crate sub expression (b c d)
|
|
$sub = new QMultiToken;
|
|
$sub->tokens = array_splice($this->tokens, $i, $term_count);
|
|
|
|
// rewrite ourseleves as a (b c d)
|
|
array_splice($this->tokens, $i, 0, array($sub));
|
|
$sub->modifier = $sub->tokens[0]->modifier & QST_OR;
|
|
$sub->tokens[0]->modifier &= ~QST_OR;
|
|
|
|
$sub->check_operator_priority();
|
|
}
|
|
else
|
|
$crt_prio = $prio;
|
|
}
|
|
}
|
|
}
|
|
|
|
class QExpression extends QMultiToken
|
|
{
|
|
var $scopes = array();
|
|
var $stokens = array();
|
|
var $stoken_modifiers = array();
|
|
|
|
function __construct($q, $scopes)
|
|
{
|
|
foreach ($scopes as $scope)
|
|
{
|
|
$this->scopes[$scope->id] = $scope;
|
|
foreach ($scope->aliases as $alias)
|
|
$this->scopes[strtolower($alias)] = $scope;
|
|
}
|
|
$i = 0;
|
|
$this->parse_expression($q, $i, 0, $this);
|
|
//manipulate the tree so that 'a OR b c' is the same as 'b c OR a'
|
|
$this->check_operator_priority();
|
|
$this->build_single_tokens($this, 0);
|
|
}
|
|
|
|
private function build_single_tokens(QMultiToken $expr, $this_is_not)
|
|
{
|
|
for ($i=0; $i<count($expr->tokens); $i++)
|
|
{
|
|
$token = $expr->tokens[$i];
|
|
$crt_is_not = ($token->modifier ^ $this_is_not) & QST_NOT; // no negation OR double negation -> no negation;
|
|
|
|
if ($token->is_single)
|
|
{
|
|
$token->idx = count($this->stokens);
|
|
$this->stokens[] = $token;
|
|
|
|
$modifier = $token->modifier;
|
|
if ($crt_is_not)
|
|
$modifier |= QST_NOT;
|
|
else
|
|
$modifier &= ~QST_NOT;
|
|
$this->stoken_modifiers[] = $modifier;
|
|
}
|
|
else
|
|
$this->build_single_tokens($token, $crt_is_not);
|
|
}
|
|
}
|
|
}
|
|
|
|
/**
|
|
Structure of results being filled from different tables
|
|
*/
|
|
class QResults
|
|
{
|
|
var $all_tags;
|
|
var $tag_ids;
|
|
var $tag_iids;
|
|
var $images_iids;
|
|
var $iids;
|
|
}
|
|
|
|
function qsearch_get_text_token_search_sql($token, $fields)
|
|
{
|
|
$clauses = array();
|
|
$variants = array_merge(array($token->term), $token->variants);
|
|
$fts = array();
|
|
foreach ($variants as $variant)
|
|
{
|
|
$use_ft = mb_strlen($variant)>3;
|
|
if ($token->modifier & QST_WILDCARD_BEGIN)
|
|
$use_ft = false;
|
|
if ($token->modifier & (QST_QUOTED|QST_WILDCARD_END) == (QST_QUOTED|QST_WILDCARD_END))
|
|
$use_ft = false;
|
|
|
|
if ($use_ft)
|
|
{
|
|
$max = max( array_map( 'mb_strlen',
|
|
preg_split('/['.preg_quote('-\'!"#$%&()*+,./:;<=>?@[\]^`{|}~','/').']+/', $variant)
|
|
) );
|
|
if ($max<4)
|
|
$use_ft = false;
|
|
}
|
|
|
|
if (!$use_ft)
|
|
{// odd term or too short for full text search; fallback to regex but unfortunately this is diacritic/accent sensitive
|
|
$pre = ($token->modifier & QST_WILDCARD_BEGIN) ? '' : '[[:<:]]';
|
|
$post = ($token->modifier & QST_WILDCARD_END) ? '' : '[[:>:]]';
|
|
foreach( $fields as $field)
|
|
$clauses[] = $field.' REGEXP \''.$pre.addslashes(preg_quote($variant)).$post.'\'';
|
|
}
|
|
else
|
|
{
|
|
$ft = $variant;
|
|
if ($token->modifier & QST_QUOTED)
|
|
$ft = '"'.$ft.'"';
|
|
if ($token->modifier & QST_WILDCARD_END)
|
|
$ft .= '*';
|
|
$fts[] = $ft;
|
|
}
|
|
}
|
|
|
|
if (count($fts))
|
|
{
|
|
$clauses[] = 'MATCH('.implode(', ',$fields).') AGAINST( \''.addslashes(implode(' ',$fts)).'\' IN BOOLEAN MODE)';
|
|
}
|
|
return $clauses;
|
|
}
|
|
|
|
function qsearch_get_images(QExpression $expr, QResults $qsr)
|
|
{
|
|
$qsr->images_iids = array_fill(0, count($expr->stokens), array());
|
|
|
|
$query_base = 'SELECT id from '.IMAGES_TABLE.' i WHERE
|
|
';
|
|
for ($i=0; $i<count($expr->stokens); $i++)
|
|
{
|
|
$token = $expr->stokens[$i];
|
|
$scope_id = isset($token->scope) ? $token->scope->id : 'photo';
|
|
$clauses = array();
|
|
|
|
$like = addslashes($token->term);
|
|
$like = str_replace( array('%','_'), array('\\%','\\_'), $like); // escape LIKE specials %_
|
|
$file_like = 'CONVERT(file, CHAR) LIKE \'%'.$like.'%\'';
|
|
|
|
switch ($scope_id)
|
|
{
|
|
case 'photo':
|
|
$clauses[] = $file_like;
|
|
$clauses = array_merge($clauses, qsearch_get_text_token_search_sql($token, array('name','comment')));
|
|
break;
|
|
|
|
case 'file':
|
|
$clauses[] = $file_like;
|
|
break;
|
|
case 'author':
|
|
if ( strlen($token->term) )
|
|
$clauses = array_merge($clauses, qsearch_get_text_token_search_sql($token, array('author')));
|
|
elseif ($token->modifier & QST_WILDCARD)
|
|
$clauses[] = 'author IS NOT NULL';
|
|
else
|
|
$clauses[] = 'author IS NULL';
|
|
break;
|
|
case 'width':
|
|
case 'height':
|
|
$clauses[] = $token->scope->get_sql($scope_id, $token);
|
|
break;
|
|
case 'ratio':
|
|
$clauses[] = $token->scope->get_sql('width/height', $token);
|
|
break;
|
|
case 'size':
|
|
$clauses[] = $token->scope->get_sql('width*height', $token);
|
|
break;
|
|
case 'hits':
|
|
$clauses[] = $token->scope->get_sql('hit', $token);
|
|
break;
|
|
case 'score':
|
|
$clauses[] = $token->scope->get_sql('rating_score', $token);
|
|
break;
|
|
case 'filesize':
|
|
$clauses[] = $token->scope->get_sql('1024*filesize', $token);
|
|
break;
|
|
case 'created':
|
|
$clauses[] = $token->scope->get_sql('date_creation', $token);
|
|
break;
|
|
case 'posted':
|
|
$clauses[] = $token->scope->get_sql('date_available', $token);
|
|
break;
|
|
case 'id':
|
|
$clauses[] = $token->scope->get_sql($scope_id, $token);
|
|
break;
|
|
default:
|
|
// allow plugins to have their own scope with columns added in db by themselves
|
|
$clauses = trigger_change('qsearch_get_images_sql_scopes', $clauses, $token, $expr);
|
|
break;
|
|
}
|
|
if (!empty($clauses))
|
|
{
|
|
$query = $query_base.'('.implode("\n OR ", $clauses).')';
|
|
$qsr->images_iids[$i] = query2array($query,null,'id');
|
|
}
|
|
}
|
|
}
|
|
|
|
function qsearch_get_tags(QExpression $expr, QResults $qsr)
|
|
{
|
|
$token_tag_ids = $qsr->tag_iids = array_fill(0, count($expr->stokens), array() );
|
|
$all_tags = array();
|
|
|
|
for ($i=0; $i<count($expr->stokens); $i++)
|
|
{
|
|
$token = $expr->stokens[$i];
|
|
if (isset($token->scope) && 'tag' != $token->scope->id)
|
|
continue;
|
|
if (empty($token->term))
|
|
continue;
|
|
|
|
$clauses = qsearch_get_text_token_search_sql( $token, array('name'));
|
|
$query = 'SELECT * FROM '.TAGS_TABLE.'
|
|
WHERE ('. implode("\n OR ",$clauses) .')';
|
|
$result = pwg_query($query);
|
|
while ($tag = pwg_db_fetch_assoc($result))
|
|
{
|
|
$token_tag_ids[$i][] = $tag['id'];
|
|
$all_tags[$tag['id']] = $tag;
|
|
}
|
|
}
|
|
|
|
// check adjacent short words
|
|
for ($i=0; $i<count($expr->stokens)-1; $i++)
|
|
{
|
|
if ( (strlen($expr->stokens[$i]->term)<=3 || strlen($expr->stokens[$i+1]->term)<=3)
|
|
&& (($expr->stoken_modifiers[$i] & (QST_QUOTED|QST_WILDCARD)) == 0)
|
|
&& (($expr->stoken_modifiers[$i+1] & (QST_BREAK|QST_QUOTED|QST_WILDCARD)) == 0) )
|
|
{
|
|
$common = array_intersect( $token_tag_ids[$i], $token_tag_ids[$i+1] );
|
|
if (count($common))
|
|
{
|
|
$token_tag_ids[$i] = $token_tag_ids[$i+1] = $common;
|
|
}
|
|
}
|
|
}
|
|
|
|
// get images
|
|
$positive_ids = $not_ids = array();
|
|
for ($i=0; $i<count($expr->stokens); $i++)
|
|
{
|
|
$tag_ids = $token_tag_ids[$i];
|
|
$token = $expr->stokens[$i];
|
|
|
|
if (!empty($tag_ids))
|
|
{
|
|
$query = '
|
|
SELECT image_id FROM '.IMAGE_TAG_TABLE.'
|
|
WHERE tag_id IN ('.implode(',',$tag_ids).')
|
|
GROUP BY image_id';
|
|
$qsr->tag_iids[$i] = query2array($query, null, 'image_id');
|
|
if ($expr->stoken_modifiers[$i]&QST_NOT)
|
|
$not_ids = array_merge($not_ids, $tag_ids);
|
|
else
|
|
{
|
|
if (strlen($token->term)>2 || count($expr->stokens)==1 || isset($token->scope) || ($token->modifier&(QST_WILDCARD|QST_QUOTED)) )
|
|
{// add tag ids to list only if the word is not too short (such as de / la /les ...)
|
|
$positive_ids = array_merge($positive_ids, $tag_ids);
|
|
}
|
|
}
|
|
}
|
|
elseif (isset($token->scope) && 'tag' == $token->scope->id && strlen($token->term)==0)
|
|
{
|
|
if ($token->modifier & QST_WILDCARD)
|
|
{// eg. 'tag:*' returns all tagged images
|
|
$qsr->tag_iids[$i] = query2array('SELECT DISTINCT image_id FROM '.IMAGE_TAG_TABLE, null, 'image_id');
|
|
}
|
|
else
|
|
{// eg. 'tag:' returns all untagged images
|
|
$qsr->tag_iids[$i] = query2array('SELECT id FROM '.IMAGES_TABLE.' LEFT JOIN '.IMAGE_TAG_TABLE.' ON id=image_id WHERE image_id IS NULL', null, 'id');
|
|
}
|
|
}
|
|
}
|
|
|
|
$all_tags = array_intersect_key($all_tags, array_flip( array_diff($positive_ids, $not_ids) ) );
|
|
usort($all_tags, 'tag_alpha_compare');
|
|
foreach ( $all_tags as &$tag )
|
|
{
|
|
$tag['name'] = trigger_change('render_tag_name', $tag['name'], $tag);
|
|
}
|
|
$qsr->all_tags = $all_tags;
|
|
$qsr->tag_ids = $token_tag_ids;
|
|
}
|
|
|
|
|
|
|
|
function qsearch_eval(QMultiToken $expr, QResults $qsr, &$qualifies, &$ignored_terms)
|
|
{
|
|
$qualifies = false; // until we find at least one positive term
|
|
$ignored_terms = array();
|
|
|
|
$ids = $not_ids = array();
|
|
|
|
for ($i=0; $i<count($expr->tokens); $i++)
|
|
{
|
|
$crt = $expr->tokens[$i];
|
|
if ($crt->is_single)
|
|
{
|
|
$crt_ids = $qsr->iids[$crt->idx] = array_unique( array_merge($qsr->images_iids[$crt->idx], $qsr->tag_iids[$crt->idx]) );
|
|
$crt_qualifies = count($crt_ids)>0 || count($qsr->tag_ids[$crt->idx])>0;
|
|
$crt_ignored_terms = $crt_qualifies ? array() : array((string)$crt);
|
|
}
|
|
else
|
|
$crt_ids = qsearch_eval($crt, $qsr, $crt_qualifies, $crt_ignored_terms);
|
|
|
|
$modifier = $crt->modifier;
|
|
if ($modifier & QST_NOT)
|
|
$not_ids = array_unique( array_merge($not_ids, $crt_ids));
|
|
else
|
|
{
|
|
$ignored_terms = array_merge($ignored_terms, $crt_ignored_terms);
|
|
if ($modifier & QST_OR)
|
|
{
|
|
$ids = array_unique( array_merge($ids, $crt_ids) );
|
|
$qualifies |= $crt_qualifies;
|
|
}
|
|
elseif ($crt_qualifies)
|
|
{
|
|
if ($qualifies)
|
|
$ids = array_intersect($ids, $crt_ids);
|
|
else
|
|
$ids = $crt_ids;
|
|
$qualifies = true;
|
|
}
|
|
}
|
|
}
|
|
|
|
if (count($not_ids))
|
|
$ids = array_diff($ids, $not_ids);
|
|
return $ids;
|
|
}
|
|
|
|
|
|
/**
|
|
* Returns the search results corresponding to a quick/query search.
|
|
* A quick/query search returns many items (search is not strict), but results
|
|
* are sorted by relevance unless $super_order_by is true. Returns:
|
|
* array (
|
|
* 'items' => array of matching images
|
|
* 'qs' => array(
|
|
* 'unmatched_terms' => array of terms from the input string that were not matched
|
|
* 'matching_tags' => array of matching tags
|
|
* 'matching_cats' => array of matching categories
|
|
* 'matching_cats_no_images' =>array(99) - matching categories without images
|
|
* )
|
|
* )
|
|
*
|
|
* @param string $q
|
|
* @param bool $super_order_by
|
|
* @param string $images_where optional additional restriction on images table
|
|
* @return array
|
|
*/
|
|
function get_quick_search_results($q, $options)
|
|
{
|
|
global $persistent_cache, $conf, $user;
|
|
|
|
$cache_key = $persistent_cache->make_key( array(
|
|
strtolower($q),
|
|
$conf['order_by'],
|
|
$user['id'],$user['cache_update_time'],
|
|
isset($options['permissions']) ? (boolean)$options['permissions'] : true,
|
|
isset($options['images_where']) ? $options['images_where'] : '',
|
|
) );
|
|
if ($persistent_cache->get($cache_key, $res))
|
|
{
|
|
return $res;
|
|
}
|
|
|
|
$res = get_quick_search_results_no_cache($q, $options);
|
|
|
|
if ( count($res['items']) )
|
|
{// cache the results only if not empty - otherwise it is useless
|
|
$persistent_cache->set($cache_key, $res, 300);
|
|
}
|
|
return $res;
|
|
}
|
|
|
|
/**
|
|
* @see get_quick_search_results but without result caching
|
|
*/
|
|
function get_quick_search_results_no_cache($q, $options)
|
|
{
|
|
global $conf;
|
|
|
|
$q = trim(stripslashes($q));
|
|
$search_results =
|
|
array(
|
|
'items' => array(),
|
|
'qs' => array('q'=>$q),
|
|
);
|
|
|
|
$q = trigger_change('qsearch_pre', $q);
|
|
|
|
$scopes = array();
|
|
$scopes[] = new QSearchScope('tag', array('tags'));
|
|
$scopes[] = new QSearchScope('photo', array('photos'));
|
|
$scopes[] = new QSearchScope('file', array('filename'));
|
|
$scopes[] = new QSearchScope('author', array(), true);
|
|
$scopes[] = new QNumericRangeScope('width', array());
|
|
$scopes[] = new QNumericRangeScope('height', array());
|
|
$scopes[] = new QNumericRangeScope('ratio', array(), false, 0.001);
|
|
$scopes[] = new QNumericRangeScope('size', array());
|
|
$scopes[] = new QNumericRangeScope('filesize', array());
|
|
$scopes[] = new QNumericRangeScope('hits', array('hit', 'visit', 'visits'));
|
|
$scopes[] = new QNumericRangeScope('score', array('rating'), true);
|
|
$scopes[] = new QNumericRangeScope('id', array());
|
|
|
|
$createdDateAliases = array('taken', 'shot');
|
|
$postedDateAliases = array('added');
|
|
if ($conf['calendar_datefield'] == 'date_creation')
|
|
$createdDateAliases[] = 'date';
|
|
else
|
|
$postedDateAliases[] = 'date';
|
|
$scopes[] = new QDateRangeScope('created', $createdDateAliases, true);
|
|
$scopes[] = new QDateRangeScope('posted', $postedDateAliases);
|
|
|
|
// allow plugins to add their own scopes
|
|
$scopes = trigger_change('qsearch_get_scopes', $scopes);
|
|
$expression = new QExpression($q, $scopes);
|
|
|
|
// get inflections for terms
|
|
$inflector = null;
|
|
$lang_code = substr(get_default_language(),0,2);
|
|
@include_once(PHPWG_ROOT_PATH.'include/inflectors/'.$lang_code.'.php');
|
|
$class_name = 'Inflector_'.$lang_code;
|
|
if (class_exists($class_name))
|
|
{
|
|
$inflector = new $class_name;
|
|
foreach( $expression->stokens as $token)
|
|
{
|
|
if (isset($token->scope) && !$token->scope->is_text)
|
|
continue;
|
|
if (strlen($token->term)>2
|
|
&& ($token->modifier & (QST_QUOTED|QST_WILDCARD))==0
|
|
&& strcspn($token->term, '\'0123456789') == strlen($token->term) )
|
|
{
|
|
$token->variants = array_unique( array_diff( $inflector->get_variants($token->term), array($token->term) ) );
|
|
}
|
|
}
|
|
}
|
|
|
|
|
|
trigger_notify('qsearch_expression_parsed', $expression);
|
|
//var_export($expression);
|
|
|
|
if (count($expression->stokens)==0)
|
|
{
|
|
return $search_results;
|
|
}
|
|
$qsr = new QResults;
|
|
qsearch_get_tags($expression, $qsr);
|
|
qsearch_get_images($expression, $qsr);
|
|
|
|
// allow plugins to evaluate their own scopes
|
|
trigger_notify('qsearch_before_eval', $expression, $qsr);
|
|
|
|
$ids = qsearch_eval($expression, $qsr, $tmp, $search_results['qs']['unmatched_terms']);
|
|
|
|
$debug[] = "<!--\nparsed: ".htmlspecialchars($expression);
|
|
$debug[] = count($expression->stokens).' tokens';
|
|
for ($i=0; $i<count($expression->stokens); $i++)
|
|
{
|
|
$debug[] = htmlspecialchars($expression->stokens[$i]).': '.count($qsr->tag_ids[$i]).' tags, '.count($qsr->tag_iids[$i]).' tiids, '.count($qsr->images_iids[$i]).' iiids, '.count($qsr->iids[$i]).' iids'
|
|
.' modifier:'.dechex($expression->stoken_modifiers[$i])
|
|
.( !empty($expression->stokens[$i]->variants) ? ' variants: '.htmlspecialchars(implode(', ',$expression->stokens[$i]->variants)): '');
|
|
}
|
|
$debug[] = 'before perms '.count($ids);
|
|
|
|
$search_results['qs']['matching_tags'] = $qsr->all_tags;
|
|
$search_results = trigger_change('qsearch_results', $search_results, $expression, $qsr);
|
|
|
|
global $template;
|
|
|
|
if (empty($ids))
|
|
{
|
|
$debug[] = '-->';
|
|
$template->append('footer_elements', implode("\n", $debug) );
|
|
return $search_results;
|
|
}
|
|
|
|
$permissions = !isset($options['permissions']) ? true : $options['permissions'];
|
|
|
|
$where_clauses = array();
|
|
$where_clauses[]='i.id IN ('. implode(',', $ids) . ')';
|
|
if (!empty($options['images_where']))
|
|
{
|
|
$where_clauses[]='('.$options['images_where'].')';
|
|
}
|
|
if ($permissions)
|
|
{
|
|
$where_clauses[] = get_sql_condition_FandF(
|
|
array
|
|
(
|
|
'forbidden_categories' => 'category_id',
|
|
'forbidden_images' => 'i.id'
|
|
),
|
|
null,true
|
|
);
|
|
}
|
|
|
|
$query = '
|
|
SELECT DISTINCT(id) FROM '.IMAGES_TABLE.' i';
|
|
if ($permissions)
|
|
{
|
|
$query .= '
|
|
INNER JOIN '.IMAGE_CATEGORY_TABLE.' AS ic ON id = ic.image_id';
|
|
}
|
|
$query .= '
|
|
WHERE '.implode("\n AND ", $where_clauses)."\n".
|
|
$conf['order_by'];
|
|
|
|
$ids = query2array($query, null, 'id');
|
|
|
|
$debug[] = count($ids).' final photo count -->';
|
|
$template->append('footer_elements', implode("\n", $debug) );
|
|
|
|
$search_results['items'] = $ids;
|
|
return $search_results;
|
|
}
|
|
|
|
/**
|
|
* Returns an array of 'items' corresponding to the search id.
|
|
* It can be either a quick search or a regular search.
|
|
*
|
|
* @param int $search_id
|
|
* @param bool $super_order_by
|
|
* @param string $images_where optional aditional restriction on images table
|
|
* @return array
|
|
*/
|
|
function get_search_results($search_id, $super_order_by, $images_where='')
|
|
{
|
|
$search = get_search_array($search_id);
|
|
if ( !isset($search['q']) )
|
|
{
|
|
$result['items'] = get_regular_search_results($search, $images_where);
|
|
return $result;
|
|
}
|
|
else
|
|
{
|
|
return get_quick_search_results($search['q'], array('super_order_by'=>$super_order_by, 'images_where'=>$images_where) );
|
|
}
|
|
}
|
|
|
|
?>
|