1 | <?php |
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2 | // +-----------------------------------------------------------------------+ |
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3 | // | Piwigo - a PHP based photo gallery | |
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4 | // +-----------------------------------------------------------------------+ |
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5 | // | Copyright(C) 2008-2014 Piwigo Team http://piwigo.org | |
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6 | // | Copyright(C) 2003-2008 PhpWebGallery Team http://phpwebgallery.net | |
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7 | // | Copyright(C) 2002-2003 Pierrick LE GALL http://le-gall.net/pierrick | |
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8 | // +-----------------------------------------------------------------------+ |
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9 | // | This program is free software; you can redistribute it and/or modify | |
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10 | // | it under the terms of the GNU General Public License as published by | |
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11 | // | the Free Software Foundation | |
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12 | // | | |
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13 | // | This program is distributed in the hope that it will be useful, but | |
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14 | // | WITHOUT ANY WARRANTY; without even the implied warranty of | |
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15 | // | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU | |
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16 | // | General Public License for more details. | |
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17 | // | | |
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18 | // | You should have received a copy of the GNU General Public License | |
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19 | // | along with this program; if not, write to the Free Software | |
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20 | // | Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, | |
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21 | // | USA. | |
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22 | // +-----------------------------------------------------------------------+ |
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23 | |
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24 | /** |
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25 | * @package functions\search |
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26 | */ |
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27 | |
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28 | |
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29 | /** |
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30 | * Returns search rules stored into a serialized array in "search" |
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31 | * table. Each search rules set is numericaly identified. |
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32 | * |
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33 | * @param int $search_id |
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34 | * @return array |
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35 | */ |
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36 | function get_search_array($search_id) |
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37 | { |
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38 | if (!is_numeric($search_id)) |
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39 | { |
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40 | die('Search id must be an integer'); |
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41 | } |
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42 | |
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43 | $query = ' |
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44 | SELECT rules |
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45 | FROM '.SEARCH_TABLE.' |
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46 | WHERE id = '.$search_id.' |
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47 | ;'; |
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48 | list($serialized_rules) = pwg_db_fetch_row(pwg_query($query)); |
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49 | |
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50 | return unserialize($serialized_rules); |
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51 | } |
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52 | |
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53 | /** |
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54 | * Returns the SQL clause for a search. |
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55 | * Transforms the array returned by get_search_array() into SQL sub-query. |
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56 | * |
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57 | * @param array $search |
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58 | * @return string |
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59 | */ |
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60 | function get_sql_search_clause($search) |
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61 | { |
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62 | // SQL where clauses are stored in $clauses array during query |
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63 | // construction |
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64 | $clauses = array(); |
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65 | |
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66 | foreach (array('file','name','comment','author') as $textfield) |
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67 | { |
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68 | if (isset($search['fields'][$textfield])) |
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69 | { |
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70 | $local_clauses = array(); |
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71 | foreach ($search['fields'][$textfield]['words'] as $word) |
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72 | { |
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73 | if ('author' == $textfield) |
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74 | { |
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75 | $local_clauses[] = $textfield."='".$word."'"; |
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76 | } |
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77 | else |
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78 | { |
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79 | $local_clauses[] = $textfield." LIKE '%".$word."%'"; |
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80 | } |
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81 | } |
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82 | |
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83 | // adds brackets around where clauses |
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84 | $local_clauses = prepend_append_array_items($local_clauses, '(', ')'); |
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85 | |
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86 | $clauses[] = implode( |
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87 | ' '.$search['fields'][$textfield]['mode'].' ', |
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88 | $local_clauses |
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89 | ); |
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90 | } |
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91 | } |
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92 | |
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93 | if (isset($search['fields']['allwords'])) |
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94 | { |
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95 | $fields = array('file', 'name', 'comment'); |
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96 | |
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97 | if (isset($search['fields']['allwords']['fields']) and count($search['fields']['allwords']['fields']) > 0) |
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98 | { |
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99 | $fields = array_intersect($fields, $search['fields']['allwords']['fields']); |
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100 | } |
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101 | |
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102 | // in the OR mode, request bust be : |
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103 | // ((field1 LIKE '%word1%' OR field2 LIKE '%word1%') |
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104 | // OR (field1 LIKE '%word2%' OR field2 LIKE '%word2%')) |
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105 | // |
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106 | // in the AND mode : |
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107 | // ((field1 LIKE '%word1%' OR field2 LIKE '%word1%') |
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108 | // AND (field1 LIKE '%word2%' OR field2 LIKE '%word2%')) |
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109 | $word_clauses = array(); |
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110 | foreach ($search['fields']['allwords']['words'] as $word) |
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111 | { |
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112 | $field_clauses = array(); |
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113 | foreach ($fields as $field) |
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114 | { |
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115 | $field_clauses[] = $field." LIKE '%".$word."%'"; |
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116 | } |
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117 | // adds brackets around where clauses |
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118 | $word_clauses[] = implode( |
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119 | "\n OR ", |
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120 | $field_clauses |
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121 | ); |
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122 | } |
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123 | |
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124 | array_walk( |
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125 | $word_clauses, |
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126 | create_function('&$s','$s="(".$s.")";') |
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127 | ); |
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128 | |
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129 | // make sure the "mode" is either OR or AND |
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130 | if ($search['fields']['allwords']['mode'] != 'AND' and $search['fields']['allwords']['mode'] != 'OR') |
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131 | { |
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132 | $search['fields']['allwords']['mode'] = 'AND'; |
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133 | } |
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134 | |
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135 | $clauses[] = "\n ". |
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136 | implode( |
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137 | "\n ". $search['fields']['allwords']['mode']. "\n ", |
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138 | $word_clauses |
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139 | ); |
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140 | } |
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141 | |
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142 | foreach (array('date_available', 'date_creation') as $datefield) |
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143 | { |
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144 | if (isset($search['fields'][$datefield])) |
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145 | { |
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146 | $clauses[] = $datefield." = '".$search['fields'][$datefield]['date']."'"; |
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147 | } |
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148 | |
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149 | foreach (array('after','before') as $suffix) |
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150 | { |
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151 | $key = $datefield.'-'.$suffix; |
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152 | |
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153 | if (isset($search['fields'][$key])) |
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154 | { |
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155 | $clauses[] = $datefield. |
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156 | ($suffix == 'after' ? ' >' : ' <'). |
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157 | ($search['fields'][$key]['inc'] ? '=' : ''). |
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158 | " '".$search['fields'][$key]['date']."'"; |
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159 | } |
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160 | } |
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161 | } |
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162 | |
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163 | if (isset($search['fields']['cat'])) |
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164 | { |
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165 | if ($search['fields']['cat']['sub_inc']) |
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166 | { |
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167 | // searching all the categories id of sub-categories |
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168 | $cat_ids = get_subcat_ids($search['fields']['cat']['words']); |
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169 | } |
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170 | else |
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171 | { |
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172 | $cat_ids = $search['fields']['cat']['words']; |
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173 | } |
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174 | |
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175 | $local_clause = 'category_id IN ('.implode(',', $cat_ids).')'; |
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176 | $clauses[] = $local_clause; |
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177 | } |
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178 | |
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179 | // adds brackets around where clauses |
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180 | $clauses = prepend_append_array_items($clauses, '(', ')'); |
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181 | |
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182 | $where_separator = |
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183 | implode( |
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184 | "\n ".$search['mode'].' ', |
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185 | $clauses |
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186 | ); |
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187 | |
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188 | $search_clause = $where_separator; |
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189 | |
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190 | return $search_clause; |
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191 | } |
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192 | |
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193 | /** |
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194 | * Returns the list of items corresponding to the advanced search array. |
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195 | * |
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196 | * @param array $search |
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197 | * @param string $images_where optional additional restriction on images table |
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198 | * @return array |
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199 | */ |
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200 | function get_regular_search_results($search, $images_where='') |
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201 | { |
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202 | global $conf; |
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203 | $forbidden = get_sql_condition_FandF( |
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204 | array |
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205 | ( |
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206 | 'forbidden_categories' => 'category_id', |
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207 | 'visible_categories' => 'category_id', |
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208 | 'visible_images' => 'id' |
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209 | ), |
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210 | "\n AND" |
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211 | ); |
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212 | |
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213 | $items = array(); |
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214 | $tag_items = array(); |
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215 | |
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216 | if (isset($search['fields']['tags'])) |
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217 | { |
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218 | $tag_items = get_image_ids_for_tags( |
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219 | $search['fields']['tags']['words'], |
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220 | $search['fields']['tags']['mode'] |
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221 | ); |
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222 | } |
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223 | |
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224 | $search_clause = get_sql_search_clause($search); |
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225 | |
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226 | if (!empty($search_clause)) |
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227 | { |
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228 | $query = ' |
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229 | SELECT DISTINCT(id) |
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230 | FROM '.IMAGES_TABLE.' i |
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231 | INNER JOIN '.IMAGE_CATEGORY_TABLE.' AS ic ON id = ic.image_id |
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232 | WHERE '.$search_clause; |
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233 | if (!empty($images_where)) |
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234 | { |
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235 | $query .= "\n AND ".$images_where; |
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236 | } |
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237 | $query .= $forbidden.' |
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238 | '.$conf['order_by']; |
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239 | $items = array_from_query($query, 'id'); |
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240 | } |
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241 | |
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242 | if ( !empty($tag_items) ) |
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243 | { |
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244 | switch ($search['mode']) |
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245 | { |
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246 | case 'AND': |
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247 | if (empty($search_clause)) |
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248 | { |
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249 | $items = $tag_items; |
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250 | } |
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251 | else |
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252 | { |
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253 | $items = array_values( array_intersect($items, $tag_items) ); |
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254 | } |
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255 | break; |
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256 | case 'OR': |
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257 | $before_count = count($items); |
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258 | $items = array_unique( |
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259 | array_merge( |
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260 | $items, |
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261 | $tag_items |
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262 | ) |
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263 | ); |
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264 | break; |
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265 | } |
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266 | } |
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267 | |
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268 | return $items; |
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269 | } |
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270 | |
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271 | |
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272 | |
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273 | define('QST_QUOTED', 0x01); |
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274 | define('QST_NOT', 0x02); |
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275 | define('QST_OR', 0x04); |
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276 | define('QST_WILDCARD_BEGIN', 0x08); |
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277 | define('QST_WILDCARD_END', 0x10); |
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278 | define('QST_WILDCARD', QST_WILDCARD_BEGIN|QST_WILDCARD_END); |
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279 | define('QST_BREAK', 0x20); |
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280 | |
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281 | /** |
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282 | * A search scope applies to a single token and restricts the search to a subset of searchable fields. |
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283 | */ |
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284 | class QSearchScope |
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285 | { |
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286 | var $id; |
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287 | var $aliases; |
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288 | var $is_text; |
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289 | var $nullable; |
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290 | |
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291 | function __construct($id, $aliases, $nullable=false, $is_text=true) |
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292 | { |
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293 | $this->id = $id; |
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294 | $this->aliases = $aliases; |
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295 | $this->is_text = $is_text; |
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296 | $this->nullable =$nullable; |
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297 | } |
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298 | |
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299 | function parse($token) |
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300 | { |
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301 | if (!$this->nullable && 0==strlen($token->term)) |
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302 | return false; |
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303 | return true; |
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304 | } |
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305 | |
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306 | function process_char(&$ch, &$crt_token) |
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307 | { |
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308 | return false; |
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309 | } |
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310 | } |
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311 | |
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312 | class QNumericRangeScope extends QSearchScope |
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313 | { |
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314 | private $epsilon; |
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315 | function __construct($id, $aliases, $nullable=false, $epsilon=0) |
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316 | { |
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317 | parent::__construct($id, $aliases, $nullable, false); |
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318 | $this->epsilon = $epsilon; |
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319 | } |
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320 | |
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321 | function parse($token) |
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322 | { |
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323 | $str = $token->term; |
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324 | $strict = array(0,0); |
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325 | if ( ($pos = strpos($str, '..')) !== false) |
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326 | $range = array( substr($str,0,$pos), substr($str, $pos+2)); |
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327 | elseif ('>' == @$str[0])// ratio:>1 |
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328 | { |
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329 | $range = array( substr($str,1), ''); |
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330 | $strict[0] = 1; |
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331 | } |
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332 | elseif ('<' == @$str[0]) // size:<5mp |
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333 | { |
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334 | $range = array('', substr($str,1)); |
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335 | $strict[1] = 1; |
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336 | } |
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337 | elseif( ($token->modifier & QST_WILDCARD_BEGIN) ) |
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338 | $range = array('', $str); |
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339 | elseif( ($token->modifier & QST_WILDCARD_END) ) |
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340 | $range = array($str, ''); |
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341 | else |
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342 | $range = array($str, $str); |
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343 | |
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344 | foreach ($range as $i =>&$val) |
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345 | { |
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346 | if (preg_match('#^(-?[0-9.]+)/([0-9.]+)$#i', $val, $matches)) |
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347 | { |
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348 | $val = floatval($matches[1]/$matches[2]); |
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349 | } |
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350 | elseif (preg_match('/^(-?[0-9.]+)([km])?/i', $val, $matches)) |
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351 | { |
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352 | $val = floatval($matches[1]); |
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353 | if (isset($matches[2])) |
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354 | { |
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355 | if ($matches[2]=='k' || $matches[2]=='K') |
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356 | { |
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357 | $val *= 1000; |
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358 | if ($i) $val += 999; |
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359 | } |
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360 | if ($matches[2]=='m' || $matches[2]=='M') |
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361 | { |
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362 | $val *= 1000000; |
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363 | if ($i) $val += 999999; |
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364 | } |
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365 | } |
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366 | } |
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367 | else |
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368 | $val = ''; |
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369 | if (is_numeric($val)) |
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370 | { |
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371 | if ($i ^ $strict[$i]) |
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372 | $val += $this->epsilon; |
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373 | else |
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374 | $val -= $this->epsilon; |
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375 | } |
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376 | } |
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377 | |
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378 | if (!$this->nullable && $range[0]=='' && $range[1] == '') |
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379 | return false; |
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380 | $token->scope_data = array( 'range'=>$range, 'strict'=>$strict ); |
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381 | return true; |
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382 | } |
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383 | |
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384 | function get_sql($field, $token) |
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385 | { |
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386 | $clauses = array(); |
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387 | if ($token->scope_data['range'][0]!=='') |
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388 | $clauses[] = $field.' >'.($token->scope_data['strict'][0]?'':'=').$token->scope_data['range'][0].' '; |
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389 | if ($token->scope_data['range'][1]!=='') |
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390 | $clauses[] = $field.' <'.($token->scope_data['strict'][1]?'':'=').$token->scope_data['range'][1].' '; |
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391 | |
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392 | if (empty($clauses)) |
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393 | { |
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394 | if ($token->modifier & QST_WILDCARD) |
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395 | return $field.' IS NOT NULL'; |
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396 | else |
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397 | return $field.' IS NULL'; |
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398 | } |
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399 | return '('.implode(' AND ', $clauses).')'; |
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400 | } |
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401 | } |
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402 | |
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403 | |
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404 | class QDateRangeScope extends QSearchScope |
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405 | { |
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406 | function __construct($id, $aliases, $nullable=false) |
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407 | { |
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408 | parent::__construct($id, $aliases, $nullable, false); |
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409 | } |
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410 | |
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411 | function parse($token) |
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412 | { |
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413 | $str = $token->term; |
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414 | $strict = array(0,0); |
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415 | if ( ($pos = strpos($str, '..')) !== false) |
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416 | $range = array( substr($str,0,$pos), substr($str, $pos+2)); |
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417 | elseif ('>' == @$str[0]) |
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418 | { |
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419 | $range = array( substr($str,1), ''); |
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420 | $strict[0] = 1; |
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421 | } |
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422 | elseif ('<' == @$str[0]) |
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423 | { |
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424 | $range = array('', substr($str,1)); |
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425 | $strict[1] = 1; |
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426 | } |
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427 | elseif( ($token->modifier & QST_WILDCARD_BEGIN) ) |
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428 | $range = array('', $str); |
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429 | elseif( ($token->modifier & QST_WILDCARD_END) ) |
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430 | $range = array($str, ''); |
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431 | else |
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432 | $range = array($str, $str); |
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433 | |
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434 | foreach ($range as $i =>&$val) |
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435 | { |
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436 | if (preg_match('/([0-9]{4})-?((?:1[0-2])|(?:0?[1-9]))?-?((?:(?:[1-3][0-9])|(?:0?[1-9])))?/', $val, $matches)) |
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437 | { |
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438 | array_shift($matches); |
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439 | if (!isset($matches[1])) |
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440 | $matches[1] = ($i ^ $strict[$i]) ? 12 : 1; |
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441 | if (!isset($matches[2])) |
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442 | $matches[2] = ($i ^ $strict[$i]) ? 31 : 1; |
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443 | $val = implode('-', $matches); |
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444 | if ($i ^ $strict[$i]) |
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445 | $val .= ' 23:59:59'; |
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446 | } |
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447 | elseif (strlen($val)) |
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448 | return false; |
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449 | } |
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450 | |
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451 | if (!$this->nullable && $range[0]=='' && $range[1] == '') |
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452 | return false; |
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453 | |
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454 | $token->scope_data = $range; |
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455 | return true; |
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456 | } |
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457 | |
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458 | function get_sql($field, $token) |
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459 | { |
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460 | $clauses = array(); |
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461 | if ($token->scope_data[0]!=='') |
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462 | $clauses[] = $field.' >= \'' . $token->scope_data[0].'\''; |
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463 | if ($token->scope_data[1]!=='') |
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464 | $clauses[] = $field.' <= \'' . $token->scope_data[1].'\''; |
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465 | |
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466 | if (empty($clauses)) |
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467 | { |
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468 | if ($token->modifier & QST_WILDCARD) |
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469 | return $field.' IS NOT NULL'; |
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470 | else |
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471 | return $field.' IS NULL'; |
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472 | } |
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473 | return '('.implode(' AND ', $clauses).')'; |
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474 | } |
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475 | } |
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476 | |
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477 | /** |
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478 | * Analyzes and splits the quick/query search query $q into tokens. |
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479 | * q='john bill' => 2 tokens 'john' 'bill' |
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480 | * Special characters for MySql full text search (+,<,>,~) appear in the token modifiers. |
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481 | * The query can contain a phrase: 'Pierre "New York"' will return 'pierre' qnd 'new york'. |
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482 | * |
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483 | * @param string $q |
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484 | */ |
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485 | |
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486 | /** Represents a single word or quoted phrase to be searched.*/ |
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487 | class QSingleToken |
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488 | { |
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489 | var $is_single = true; |
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490 | var $modifier; |
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491 | var $term; /* the actual word/phrase string*/ |
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492 | var $variants = array(); |
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493 | var $scope; |
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494 | |
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495 | var $scope_data; |
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496 | var $idx; |
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497 | |
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498 | function __construct($term, $modifier, $scope) |
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499 | { |
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500 | $this->term = $term; |
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501 | $this->modifier = $modifier; |
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502 | $this->scope = $scope; |
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503 | } |
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504 | |
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505 | function __toString() |
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506 | { |
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507 | $s = ''; |
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508 | if (isset($this->scope)) |
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509 | $s .= $this->scope->id .':'; |
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510 | if ($this->modifier & QST_WILDCARD_BEGIN) |
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511 | $s .= '*'; |
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512 | if ($this->modifier & QST_QUOTED) |
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513 | $s .= '"'; |
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514 | $s .= $this->term; |
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515 | if ($this->modifier & QST_QUOTED) |
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516 | $s .= '"'; |
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517 | if ($this->modifier & QST_WILDCARD_END) |
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518 | $s .= '*'; |
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519 | return $s; |
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520 | } |
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521 | } |
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522 | |
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523 | /** Represents an expression of several words or sub expressions to be searched.*/ |
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524 | class QMultiToken |
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525 | { |
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526 | var $is_single = false; |
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527 | var $modifier; |
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528 | var $tokens = array(); // the actual array of QSingleToken or QMultiToken |
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529 | |
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530 | function __toString() |
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531 | { |
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532 | $s = ''; |
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533 | for ($i=0; $i<count($this->tokens); $i++) |
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534 | { |
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535 | $modifier = $this->tokens[$i]->modifier; |
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536 | if ($i) |
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537 | $s .= ' '; |
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538 | if ($modifier & QST_OR) |
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539 | $s .= 'OR '; |
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540 | if ($modifier & QST_NOT) |
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541 | $s .= 'NOT '; |
---|
542 | if (! ($this->tokens[$i]->is_single) ) |
---|
543 | { |
---|
544 | $s .= '('; |
---|
545 | $s .= $this->tokens[$i]; |
---|
546 | $s .= ')'; |
---|
547 | } |
---|
548 | else |
---|
549 | { |
---|
550 | $s .= $this->tokens[$i]; |
---|
551 | } |
---|
552 | } |
---|
553 | return $s; |
---|
554 | } |
---|
555 | |
---|
556 | private function push(&$token, &$modifier, &$scope) |
---|
557 | { |
---|
558 | if (strlen($token) || (isset($scope) && $scope->nullable)) |
---|
559 | { |
---|
560 | if (isset($scope)) |
---|
561 | $modifier |= QST_BREAK; |
---|
562 | $this->tokens[] = new QSingleToken($token, $modifier, $scope); |
---|
563 | } |
---|
564 | $token = ""; |
---|
565 | $modifier = 0; |
---|
566 | $scope = null; |
---|
567 | } |
---|
568 | |
---|
569 | /** |
---|
570 | * Parses the input query string by tokenizing the input, generating the modifiers (and/or/not/quotation/wildcards...). |
---|
571 | * Recursivity occurs when parsing () |
---|
572 | * @param string $q the actual query to be parsed |
---|
573 | * @param int $qi the character index in $q where to start parsing |
---|
574 | * @param int $level the depth from root in the tree (number of opened and unclosed opening brackets) |
---|
575 | */ |
---|
576 | protected function parse_expression($q, &$qi, $level, $root) |
---|
577 | { |
---|
578 | $crt_token = ""; |
---|
579 | $crt_modifier = 0; |
---|
580 | $crt_scope = null; |
---|
581 | |
---|
582 | for ($stop=false; !$stop && $qi<strlen($q); $qi++) |
---|
583 | { |
---|
584 | $ch = $q[$qi]; |
---|
585 | if ( ($crt_modifier&QST_QUOTED)==0) |
---|
586 | { |
---|
587 | switch ($ch) |
---|
588 | { |
---|
589 | case '(': |
---|
590 | if (strlen($crt_token)) |
---|
591 | $this->push($crt_token, $crt_modifier, $crt_scope); |
---|
592 | $sub = new QMultiToken; |
---|
593 | $qi++; |
---|
594 | $sub->parse_expression($q, $qi, $level+1, $root); |
---|
595 | $sub->modifier = $crt_modifier; |
---|
596 | if (isset($crt_scope) && $crt_scope->is_text) |
---|
597 | { |
---|
598 | $sub->apply_scope($crt_scope); // eg. 'tag:(John OR Bill)' |
---|
599 | } |
---|
600 | $this->tokens[] = $sub; |
---|
601 | $crt_modifier = 0; |
---|
602 | $crt_scope = null; |
---|
603 | break; |
---|
604 | case ')': |
---|
605 | if ($level>0) |
---|
606 | $stop = true; |
---|
607 | break; |
---|
608 | case ':': |
---|
609 | $scope = @$root->scopes[strtolower($crt_token)]; |
---|
610 | if (!isset($scope) || isset($crt_scope)) |
---|
611 | { // white space |
---|
612 | $this->push($crt_token, $crt_modifier, $crt_scope); |
---|
613 | } |
---|
614 | else |
---|
615 | { |
---|
616 | $crt_token = ""; |
---|
617 | $crt_scope = $scope; |
---|
618 | } |
---|
619 | break; |
---|
620 | case '"': |
---|
621 | if (strlen($crt_token)) |
---|
622 | $this->push($crt_token, $crt_modifier, $crt_scope); |
---|
623 | $crt_modifier |= QST_QUOTED; |
---|
624 | break; |
---|
625 | case '-': |
---|
626 | if (strlen($crt_token) || isset($crt_scope)) |
---|
627 | $crt_token .= $ch; |
---|
628 | else |
---|
629 | $crt_modifier |= QST_NOT; |
---|
630 | break; |
---|
631 | case '*': |
---|
632 | if (strlen($crt_token)) |
---|
633 | $crt_token .= $ch; // wildcard end later |
---|
634 | else |
---|
635 | $crt_modifier |= QST_WILDCARD_BEGIN; |
---|
636 | break; |
---|
637 | case '.': |
---|
638 | if (isset($crt_scope) && !$crt_scope->is_text) |
---|
639 | { |
---|
640 | $crt_token .= $ch; |
---|
641 | break; |
---|
642 | } |
---|
643 | if (strlen($crt_token) && preg_match('/[0-9]/', substr($crt_token,-1)) |
---|
644 | && $qi+1<strlen($q) && preg_match('/[0-9]/', $q[$qi+1])) |
---|
645 | {// dot between digits is not a separator e.g. F2.8 |
---|
646 | $crt_token .= $ch; |
---|
647 | break; |
---|
648 | } |
---|
649 | // else white space go on.. |
---|
650 | default: |
---|
651 | if (!$crt_scope || !$crt_scope->process_char($ch, $crt_token)) |
---|
652 | { |
---|
653 | if (strpos(' ,.;!?', $ch)!==false) |
---|
654 | { // white space |
---|
655 | $this->push($crt_token, $crt_modifier, $crt_scope); |
---|
656 | } |
---|
657 | else |
---|
658 | $crt_token .= $ch; |
---|
659 | } |
---|
660 | break; |
---|
661 | } |
---|
662 | } |
---|
663 | else |
---|
664 | {// quoted |
---|
665 | if ($ch=='"') |
---|
666 | { |
---|
667 | if ($qi+1 < strlen($q) && $q[$qi+1]=='*') |
---|
668 | { |
---|
669 | $crt_modifier |= QST_WILDCARD_END; |
---|
670 | $qi++; |
---|
671 | } |
---|
672 | $this->push($crt_token, $crt_modifier, $crt_scope); |
---|
673 | } |
---|
674 | else |
---|
675 | $crt_token .= $ch; |
---|
676 | } |
---|
677 | } |
---|
678 | |
---|
679 | $this->push($crt_token, $crt_modifier, $crt_scope); |
---|
680 | |
---|
681 | for ($i=0; $i<count($this->tokens); $i++) |
---|
682 | { |
---|
683 | $token = $this->tokens[$i]; |
---|
684 | $remove = false; |
---|
685 | if ($token->is_single) |
---|
686 | { |
---|
687 | if ( ($token->modifier & QST_QUOTED)==0 |
---|
688 | && substr($token->term, -1)=='*' ) |
---|
689 | { |
---|
690 | $token->term = rtrim($token->term, '*'); |
---|
691 | $token->modifier |= QST_WILDCARD_END; |
---|
692 | } |
---|
693 | |
---|
694 | if ( !isset($token->scope) |
---|
695 | && ($token->modifier & (QST_QUOTED|QST_WILDCARD))==0 ) |
---|
696 | { |
---|
697 | if ('not' == strtolower($token->term)) |
---|
698 | { |
---|
699 | if ($i+1 < count($this->tokens)) |
---|
700 | $this->tokens[$i+1]->modifier |= QST_NOT; |
---|
701 | $token->term = ""; |
---|
702 | } |
---|
703 | if ('or' == strtolower($token->term)) |
---|
704 | { |
---|
705 | if ($i+1 < count($this->tokens)) |
---|
706 | $this->tokens[$i+1]->modifier |= QST_OR; |
---|
707 | $token->term = ""; |
---|
708 | } |
---|
709 | if ('and' == strtolower($token->term)) |
---|
710 | { |
---|
711 | $token->term = ""; |
---|
712 | } |
---|
713 | } |
---|
714 | |
---|
715 | if (!strlen($token->term) |
---|
716 | && (!isset($token->scope) || !$token->scope->nullable) ) |
---|
717 | { |
---|
718 | $remove = true; |
---|
719 | } |
---|
720 | |
---|
721 | if ( isset($token->scope) |
---|
722 | && !$token->scope->parse($token)) |
---|
723 | $remove = true; |
---|
724 | } |
---|
725 | elseif (!count($token->tokens)) |
---|
726 | { |
---|
727 | $remove = true; |
---|
728 | } |
---|
729 | if ($remove) |
---|
730 | { |
---|
731 | array_splice($this->tokens, $i, 1); |
---|
732 | if ($i<count($this->tokens) && $this->tokens[$i]->is_single) |
---|
733 | { |
---|
734 | $this->tokens[$i]->modifier |= QST_BREAK; |
---|
735 | } |
---|
736 | $i--; |
---|
737 | } |
---|
738 | } |
---|
739 | |
---|
740 | if ($level>0 && count($this->tokens) && $this->tokens[0]->is_single) |
---|
741 | { |
---|
742 | $this->tokens[0]->modifier |= QST_BREAK; |
---|
743 | } |
---|
744 | } |
---|
745 | |
---|
746 | /** |
---|
747 | * Applies recursively a search scope to all sub single tokens. We allow 'tag:(John Bill)' but we cannot evaluate |
---|
748 | * scopes on expressions so we rewrite as '(tag:John tag:Bill)' |
---|
749 | */ |
---|
750 | private function apply_scope(QSearchScope $scope) |
---|
751 | { |
---|
752 | for ($i=0; $i<count($this->tokens); $i++) |
---|
753 | { |
---|
754 | if ($this->tokens[$i]->is_single) |
---|
755 | { |
---|
756 | if (!isset($this->tokens[$i]->scope)) |
---|
757 | $this->tokens[$i]->scope = $scope; |
---|
758 | } |
---|
759 | else |
---|
760 | $this->tokens[$i]->apply_scope($scope); |
---|
761 | } |
---|
762 | } |
---|
763 | |
---|
764 | private static function priority($modifier) |
---|
765 | { |
---|
766 | return $modifier & QST_OR ? 0 :1; |
---|
767 | } |
---|
768 | |
---|
769 | /* because evaluations occur left to right, we ensure that 'a OR b c d' is interpreted as 'a OR (b c d)'*/ |
---|
770 | protected function check_operator_priority() |
---|
771 | { |
---|
772 | for ($i=0; $i<count($this->tokens); $i++) |
---|
773 | { |
---|
774 | if (!$this->tokens[$i]->is_single) |
---|
775 | $this->tokens[$i]->check_operator_priority(); |
---|
776 | if ($i==1) |
---|
777 | $crt_prio = self::priority($this->tokens[$i]->modifier); |
---|
778 | if ($i<=1) |
---|
779 | continue; |
---|
780 | $prio = self::priority($this->tokens[$i]->modifier); |
---|
781 | if ($prio > $crt_prio) |
---|
782 | {// e.g. 'a OR b c d' i=2, operator(c)=AND -> prio(AND) > prio(OR) = operator(b) |
---|
783 | $term_count = 2; // at least b and c to be regrouped |
---|
784 | for ($j=$i+1; $j<count($this->tokens); $j++) |
---|
785 | { |
---|
786 | if (self::priority($this->tokens[$j]->modifier) >= $prio) |
---|
787 | $term_count++; // also take d |
---|
788 | else |
---|
789 | break; |
---|
790 | } |
---|
791 | |
---|
792 | $i--; // move pointer to b |
---|
793 | // crate sub expression (b c d) |
---|
794 | $sub = new QMultiToken; |
---|
795 | $sub->tokens = array_splice($this->tokens, $i, $term_count); |
---|
796 | |
---|
797 | // rewrite ourseleves as a (b c d) |
---|
798 | array_splice($this->tokens, $i, 0, array($sub)); |
---|
799 | $sub->modifier = $sub->tokens[0]->modifier & QST_OR; |
---|
800 | $sub->tokens[0]->modifier &= ~QST_OR; |
---|
801 | |
---|
802 | $sub->check_operator_priority(); |
---|
803 | } |
---|
804 | else |
---|
805 | $crt_prio = $prio; |
---|
806 | } |
---|
807 | } |
---|
808 | } |
---|
809 | |
---|
810 | class QExpression extends QMultiToken |
---|
811 | { |
---|
812 | var $scopes = array(); |
---|
813 | var $stokens = array(); |
---|
814 | var $stoken_modifiers = array(); |
---|
815 | |
---|
816 | function __construct($q, $scopes) |
---|
817 | { |
---|
818 | foreach ($scopes as $scope) |
---|
819 | { |
---|
820 | $this->scopes[$scope->id] = $scope; |
---|
821 | foreach ($scope->aliases as $alias) |
---|
822 | $this->scopes[strtolower($alias)] = $scope; |
---|
823 | } |
---|
824 | $i = 0; |
---|
825 | $this->parse_expression($q, $i, 0, $this); |
---|
826 | //manipulate the tree so that 'a OR b c' is the same as 'b c OR a' |
---|
827 | $this->check_operator_priority(); |
---|
828 | $this->build_single_tokens($this, 0); |
---|
829 | } |
---|
830 | |
---|
831 | private function build_single_tokens(QMultiToken $expr, $this_is_not) |
---|
832 | { |
---|
833 | for ($i=0; $i<count($expr->tokens); $i++) |
---|
834 | { |
---|
835 | $token = $expr->tokens[$i]; |
---|
836 | $crt_is_not = ($token->modifier ^ $this_is_not) & QST_NOT; // no negation OR double negation -> no negation; |
---|
837 | |
---|
838 | if ($token->is_single) |
---|
839 | { |
---|
840 | $token->idx = count($this->stokens); |
---|
841 | $this->stokens[] = $token; |
---|
842 | |
---|
843 | $modifier = $token->modifier; |
---|
844 | if ($crt_is_not) |
---|
845 | $modifier |= QST_NOT; |
---|
846 | else |
---|
847 | $modifier &= ~QST_NOT; |
---|
848 | $this->stoken_modifiers[] = $modifier; |
---|
849 | } |
---|
850 | else |
---|
851 | $this->build_single_tokens($token, $crt_is_not); |
---|
852 | } |
---|
853 | } |
---|
854 | } |
---|
855 | |
---|
856 | /** |
---|
857 | Structure of results being filled from different tables |
---|
858 | */ |
---|
859 | class QResults |
---|
860 | { |
---|
861 | var $all_tags; |
---|
862 | var $tag_ids; |
---|
863 | var $tag_iids; |
---|
864 | var $images_iids; |
---|
865 | var $iids; |
---|
866 | } |
---|
867 | |
---|
868 | function qsearch_get_text_token_search_sql($token, $fields) |
---|
869 | { |
---|
870 | $clauses = array(); |
---|
871 | $variants = array_merge(array($token->term), $token->variants); |
---|
872 | $fts = array(); |
---|
873 | foreach ($variants as $variant) |
---|
874 | { |
---|
875 | $use_ft = mb_strlen($variant)>3; |
---|
876 | if ($token->modifier & QST_WILDCARD_BEGIN) |
---|
877 | $use_ft = false; |
---|
878 | if ($token->modifier & (QST_QUOTED|QST_WILDCARD_END) == (QST_QUOTED|QST_WILDCARD_END)) |
---|
879 | $use_ft = false; |
---|
880 | |
---|
881 | if ($use_ft) |
---|
882 | { |
---|
883 | $max = max( array_map( 'mb_strlen', |
---|
884 | preg_split('/['.preg_quote('-\'!"#$%&()*+,./:;<=>?@[\]^`{|}~','/').']+/', $variant) |
---|
885 | ) ); |
---|
886 | if ($max<4) |
---|
887 | $use_ft = false; |
---|
888 | } |
---|
889 | |
---|
890 | if (!$use_ft) |
---|
891 | {// odd term or too short for full text search; fallback to regex but unfortunately this is diacritic/accent sensitive |
---|
892 | $pre = ($token->modifier & QST_WILDCARD_BEGIN) ? '' : '[[:<:]]'; |
---|
893 | $post = ($token->modifier & QST_WILDCARD_END) ? '' : '[[:>:]]'; |
---|
894 | foreach( $fields as $field) |
---|
895 | $clauses[] = $field.' REGEXP \''.$pre.addslashes(preg_quote($variant)).$post.'\''; |
---|
896 | } |
---|
897 | else |
---|
898 | { |
---|
899 | $ft = $variant; |
---|
900 | if ($token->modifier & QST_QUOTED) |
---|
901 | $ft = '"'.$ft.'"'; |
---|
902 | if ($token->modifier & QST_WILDCARD_END) |
---|
903 | $ft .= '*'; |
---|
904 | $fts[] = $ft; |
---|
905 | } |
---|
906 | } |
---|
907 | |
---|
908 | if (count($fts)) |
---|
909 | { |
---|
910 | $clauses[] = 'MATCH('.implode(', ',$fields).') AGAINST( \''.addslashes(implode(' ',$fts)).'\' IN BOOLEAN MODE)'; |
---|
911 | } |
---|
912 | return $clauses; |
---|
913 | } |
---|
914 | |
---|
915 | function qsearch_get_images(QExpression $expr, QResults $qsr) |
---|
916 | { |
---|
917 | $qsr->images_iids = array_fill(0, count($expr->stokens), array()); |
---|
918 | |
---|
919 | $query_base = 'SELECT id from '.IMAGES_TABLE.' i WHERE |
---|
920 | '; |
---|
921 | for ($i=0; $i<count($expr->stokens); $i++) |
---|
922 | { |
---|
923 | $token = $expr->stokens[$i]; |
---|
924 | $scope_id = isset($token->scope) ? $token->scope->id : 'photo'; |
---|
925 | $clauses = array(); |
---|
926 | |
---|
927 | $like = addslashes($token->term); |
---|
928 | $like = str_replace( array('%','_'), array('\\%','\\_'), $like); // escape LIKE specials %_ |
---|
929 | $file_like = 'CONVERT(file, CHAR) LIKE \'%'.$like.'%\''; |
---|
930 | |
---|
931 | switch ($scope_id) |
---|
932 | { |
---|
933 | case 'photo': |
---|
934 | $clauses[] = $file_like; |
---|
935 | $clauses = array_merge($clauses, qsearch_get_text_token_search_sql($token, array('name','comment'))); |
---|
936 | break; |
---|
937 | |
---|
938 | case 'file': |
---|
939 | $clauses[] = $file_like; |
---|
940 | break; |
---|
941 | case 'width': |
---|
942 | case 'height': |
---|
943 | $clauses[] = $token->scope->get_sql($scope_id, $token); |
---|
944 | break; |
---|
945 | case 'ratio': |
---|
946 | $clauses[] = $token->scope->get_sql('width/height', $token); |
---|
947 | break; |
---|
948 | case 'size': |
---|
949 | $clauses[] = $token->scope->get_sql('width*height', $token); |
---|
950 | break; |
---|
951 | case 'hits': |
---|
952 | $clauses[] = $token->scope->get_sql('hit', $token); |
---|
953 | break; |
---|
954 | case 'score': |
---|
955 | $clauses[] = $token->scope->get_sql('rating_score', $token); |
---|
956 | break; |
---|
957 | case 'filesize': |
---|
958 | $clauses[] = $token->scope->get_sql('1024*filesize', $token); |
---|
959 | break; |
---|
960 | case 'created': |
---|
961 | $clauses[] = $token->scope->get_sql('date_creation', $token); |
---|
962 | break; |
---|
963 | case 'posted': |
---|
964 | $clauses[] = $token->scope->get_sql('date_available', $token); |
---|
965 | break; |
---|
966 | case 'id': |
---|
967 | $clauses[] = $token->scope->get_sql($scope_id, $token); |
---|
968 | break; |
---|
969 | default: |
---|
970 | // allow plugins to have their own scope with columns added in db by themselves |
---|
971 | $clauses = trigger_change('qsearch_get_images_sql_scopes', $clauses, $token, $expr); |
---|
972 | break; |
---|
973 | } |
---|
974 | if (!empty($clauses)) |
---|
975 | { |
---|
976 | $query = $query_base.'('.implode("\n OR ", $clauses).')'; |
---|
977 | $qsr->images_iids[$i] = query2array($query,null,'id'); |
---|
978 | } |
---|
979 | } |
---|
980 | } |
---|
981 | |
---|
982 | function qsearch_get_tags(QExpression $expr, QResults $qsr) |
---|
983 | { |
---|
984 | $token_tag_ids = $qsr->tag_iids = array_fill(0, count($expr->stokens), array() ); |
---|
985 | $all_tags = array(); |
---|
986 | |
---|
987 | for ($i=0; $i<count($expr->stokens); $i++) |
---|
988 | { |
---|
989 | $token = $expr->stokens[$i]; |
---|
990 | if (isset($token->scope) && 'tag' != $token->scope->id) |
---|
991 | continue; |
---|
992 | if (empty($token->term)) |
---|
993 | continue; |
---|
994 | |
---|
995 | $clauses = qsearch_get_text_token_search_sql( $token, array('name')); |
---|
996 | $query = 'SELECT * FROM '.TAGS_TABLE.' |
---|
997 | WHERE ('. implode("\n OR ",$clauses) .')'; |
---|
998 | $result = pwg_query($query); |
---|
999 | while ($tag = pwg_db_fetch_assoc($result)) |
---|
1000 | { |
---|
1001 | $token_tag_ids[$i][] = $tag['id']; |
---|
1002 | $all_tags[$tag['id']] = $tag; |
---|
1003 | } |
---|
1004 | } |
---|
1005 | |
---|
1006 | // check adjacent short words |
---|
1007 | for ($i=0; $i<count($expr->stokens)-1; $i++) |
---|
1008 | { |
---|
1009 | if ( (strlen($expr->stokens[$i]->term)<=3 || strlen($expr->stokens[$i+1]->term)<=3) |
---|
1010 | && (($expr->stoken_modifiers[$i] & (QST_QUOTED|QST_WILDCARD)) == 0) |
---|
1011 | && (($expr->stoken_modifiers[$i+1] & (QST_BREAK|QST_QUOTED|QST_WILDCARD)) == 0) ) |
---|
1012 | { |
---|
1013 | $common = array_intersect( $token_tag_ids[$i], $token_tag_ids[$i+1] ); |
---|
1014 | if (count($common)) |
---|
1015 | { |
---|
1016 | $token_tag_ids[$i] = $token_tag_ids[$i+1] = $common; |
---|
1017 | } |
---|
1018 | } |
---|
1019 | } |
---|
1020 | |
---|
1021 | // get images |
---|
1022 | $positive_ids = $not_ids = array(); |
---|
1023 | for ($i=0; $i<count($expr->stokens); $i++) |
---|
1024 | { |
---|
1025 | $tag_ids = $token_tag_ids[$i]; |
---|
1026 | $token = $expr->stokens[$i]; |
---|
1027 | |
---|
1028 | if (!empty($tag_ids)) |
---|
1029 | { |
---|
1030 | $query = ' |
---|
1031 | SELECT image_id FROM '.IMAGE_TAG_TABLE.' |
---|
1032 | WHERE tag_id IN ('.implode(',',$tag_ids).') |
---|
1033 | GROUP BY image_id'; |
---|
1034 | $qsr->tag_iids[$i] = query2array($query, null, 'image_id'); |
---|
1035 | if ($expr->stoken_modifiers[$i]&QST_NOT) |
---|
1036 | $not_ids = array_merge($not_ids, $tag_ids); |
---|
1037 | else |
---|
1038 | { |
---|
1039 | if (strlen($token->term)>2 || count($expr->stokens)==1 || isset($token->scope) || ($token->modifier&(QST_WILDCARD|QST_QUOTED)) ) |
---|
1040 | {// add tag ids to list only if the word is not too short (such as de / la /les ...) |
---|
1041 | $positive_ids = array_merge($positive_ids, $tag_ids); |
---|
1042 | } |
---|
1043 | } |
---|
1044 | } |
---|
1045 | elseif (isset($token->scope) && 'tag' == $token->scope->id && strlen($token->term)==0) |
---|
1046 | { |
---|
1047 | if ($token->modifier & QST_WILDCARD) |
---|
1048 | {// eg. 'tag:*' returns all tagged images |
---|
1049 | $qsr->tag_iids[$i] = query2array('SELECT DISTINCT image_id FROM '.IMAGE_TAG_TABLE, null, 'image_id'); |
---|
1050 | } |
---|
1051 | else |
---|
1052 | {// eg. 'tag:' returns all untagged images |
---|
1053 | $qsr->tag_iids[$i] = query2array('SELECT id FROM '.IMAGES_TABLE.' LEFT JOIN '.IMAGE_TAG_TABLE.' ON id=image_id WHERE image_id IS NULL', null, 'id'); |
---|
1054 | } |
---|
1055 | } |
---|
1056 | } |
---|
1057 | |
---|
1058 | $all_tags = array_intersect_key($all_tags, array_flip( array_diff($positive_ids, $not_ids) ) ); |
---|
1059 | usort($all_tags, 'tag_alpha_compare'); |
---|
1060 | foreach ( $all_tags as &$tag ) |
---|
1061 | { |
---|
1062 | $tag['name'] = trigger_change('render_tag_name', $tag['name'], $tag); |
---|
1063 | } |
---|
1064 | $qsr->all_tags = $all_tags; |
---|
1065 | $qsr->tag_ids = $token_tag_ids; |
---|
1066 | } |
---|
1067 | |
---|
1068 | |
---|
1069 | |
---|
1070 | function qsearch_eval(QMultiToken $expr, QResults $qsr, &$qualifies, &$ignored_terms) |
---|
1071 | { |
---|
1072 | $qualifies = false; // until we find at least one positive term |
---|
1073 | $ignored_terms = array(); |
---|
1074 | |
---|
1075 | $ids = $not_ids = array(); |
---|
1076 | |
---|
1077 | for ($i=0; $i<count($expr->tokens); $i++) |
---|
1078 | { |
---|
1079 | $crt = $expr->tokens[$i]; |
---|
1080 | if ($crt->is_single) |
---|
1081 | { |
---|
1082 | $crt_ids = $qsr->iids[$crt->idx] = array_unique( array_merge($qsr->images_iids[$crt->idx], $qsr->tag_iids[$crt->idx]) ); |
---|
1083 | $crt_qualifies = count($crt_ids)>0 || count($qsr->tag_ids[$crt->idx])>0; |
---|
1084 | $crt_ignored_terms = $crt_qualifies ? array() : array($crt->term); |
---|
1085 | } |
---|
1086 | else |
---|
1087 | $crt_ids = qsearch_eval($crt, $qsr, $crt_qualifies, $crt_ignored_terms); |
---|
1088 | |
---|
1089 | $modifier = $crt->modifier; |
---|
1090 | if ($modifier & QST_NOT) |
---|
1091 | $not_ids = array_unique( array_merge($not_ids, $crt_ids)); |
---|
1092 | else |
---|
1093 | { |
---|
1094 | $ignored_terms = array_merge($ignored_terms, $crt_ignored_terms); |
---|
1095 | if ($modifier & QST_OR) |
---|
1096 | { |
---|
1097 | $ids = array_unique( array_merge($ids, $crt_ids) ); |
---|
1098 | $qualifies |= $crt_qualifies; |
---|
1099 | } |
---|
1100 | elseif ($crt_qualifies) |
---|
1101 | { |
---|
1102 | if ($qualifies) |
---|
1103 | $ids = array_intersect($ids, $crt_ids); |
---|
1104 | else |
---|
1105 | $ids = $crt_ids; |
---|
1106 | $qualifies = true; |
---|
1107 | } |
---|
1108 | } |
---|
1109 | } |
---|
1110 | |
---|
1111 | if (count($not_ids)) |
---|
1112 | $ids = array_diff($ids, $not_ids); |
---|
1113 | return $ids; |
---|
1114 | } |
---|
1115 | |
---|
1116 | |
---|
1117 | /** |
---|
1118 | * Returns the search results corresponding to a quick/query search. |
---|
1119 | * A quick/query search returns many items (search is not strict), but results |
---|
1120 | * are sorted by relevance unless $super_order_by is true. Returns: |
---|
1121 | * array ( |
---|
1122 | * 'items' => array of matching images |
---|
1123 | * 'qs' => array( |
---|
1124 | * 'unmatched_terms' => array of terms from the input string that were not matched |
---|
1125 | * 'matching_tags' => array of matching tags |
---|
1126 | * 'matching_cats' => array of matching categories |
---|
1127 | * 'matching_cats_no_images' =>array(99) - matching categories without images |
---|
1128 | * ) |
---|
1129 | * ) |
---|
1130 | * |
---|
1131 | * @param string $q |
---|
1132 | * @param bool $super_order_by |
---|
1133 | * @param string $images_where optional additional restriction on images table |
---|
1134 | * @return array |
---|
1135 | */ |
---|
1136 | function get_quick_search_results($q, $options) |
---|
1137 | { |
---|
1138 | global $persistent_cache, $conf, $user; |
---|
1139 | |
---|
1140 | $cache_key = $persistent_cache->make_key( array( |
---|
1141 | strtolower($q), |
---|
1142 | $conf['order_by'], |
---|
1143 | $user['id'],$user['cache_update_time'], |
---|
1144 | isset($options['permissions']) ? (boolean)$options['permissions'] : true, |
---|
1145 | isset($options['images_where']) ? $options['images_where'] : '', |
---|
1146 | ) ); |
---|
1147 | if ($persistent_cache->get($cache_key, $res)) |
---|
1148 | { |
---|
1149 | return $res; |
---|
1150 | } |
---|
1151 | |
---|
1152 | $res = get_quick_search_results_no_cache($q, $options); |
---|
1153 | |
---|
1154 | if ( count($res['items']) ) |
---|
1155 | {// cache the results only if not empty - otherwise it is useless |
---|
1156 | $persistent_cache->set($cache_key, $res, 300); |
---|
1157 | } |
---|
1158 | return $res; |
---|
1159 | } |
---|
1160 | |
---|
1161 | /** |
---|
1162 | * @see get_quick_search_results but without result caching |
---|
1163 | */ |
---|
1164 | function get_quick_search_results_no_cache($q, $options) |
---|
1165 | { |
---|
1166 | global $conf; |
---|
1167 | |
---|
1168 | $q = trim(stripslashes($q)); |
---|
1169 | $search_results = |
---|
1170 | array( |
---|
1171 | 'items' => array(), |
---|
1172 | 'qs' => array('q'=>$q), |
---|
1173 | ); |
---|
1174 | |
---|
1175 | $scopes = array(); |
---|
1176 | $scopes[] = new QSearchScope('tag', array('tags')); |
---|
1177 | $scopes[] = new QSearchScope('photo', array('photos')); |
---|
1178 | $scopes[] = new QSearchScope('file', array('filename')); |
---|
1179 | $scopes[] = new QNumericRangeScope('width', array()); |
---|
1180 | $scopes[] = new QNumericRangeScope('height', array()); |
---|
1181 | $scopes[] = new QNumericRangeScope('ratio', array(), false, 0.001); |
---|
1182 | $scopes[] = new QNumericRangeScope('size', array()); |
---|
1183 | $scopes[] = new QNumericRangeScope('filesize', array()); |
---|
1184 | $scopes[] = new QNumericRangeScope('hits', array('hit', 'visit', 'visits')); |
---|
1185 | $scopes[] = new QNumericRangeScope('score', array('rating'), true); |
---|
1186 | $scopes[] = new QNumericRangeScope('id', array()); |
---|
1187 | |
---|
1188 | $createdDateAliases = array('taken', 'shot'); |
---|
1189 | $postedDateAliases = array('added'); |
---|
1190 | if ($conf['calendar_datefield'] == 'date_creation') |
---|
1191 | $createdDateAliases[] = 'date'; |
---|
1192 | else |
---|
1193 | $postedDateAliases[] = 'date'; |
---|
1194 | $scopes[] = new QDateRangeScope('created', $createdDateAliases, true); |
---|
1195 | $scopes[] = new QDateRangeScope('posted', $postedDateAliases); |
---|
1196 | |
---|
1197 | // allow plugins to add their own scopes |
---|
1198 | $scopes = trigger_change('qsearch_get_scopes', $scopes); |
---|
1199 | $expression = new QExpression($q, $scopes); |
---|
1200 | |
---|
1201 | // get inflections for terms |
---|
1202 | $inflector = null; |
---|
1203 | $lang_code = substr(get_default_language(),0,2); |
---|
1204 | @include_once(PHPWG_ROOT_PATH.'include/inflectors/'.$lang_code.'.php'); |
---|
1205 | $class_name = 'Inflector_'.$lang_code; |
---|
1206 | if (class_exists($class_name)) |
---|
1207 | { |
---|
1208 | $inflector = new $class_name; |
---|
1209 | foreach( $expression->stokens as $token) |
---|
1210 | { |
---|
1211 | if (isset($token->scope) && !$token->scope->is_text) |
---|
1212 | continue; |
---|
1213 | if (strlen($token->term)>2 |
---|
1214 | && ($token->modifier & (QST_QUOTED|QST_WILDCARD))==0 |
---|
1215 | && strcspn($token->term, '\'0123456789') == strlen($token->term) ) |
---|
1216 | { |
---|
1217 | $token->variants = array_unique( array_diff( $inflector->get_variants($token->term), array($token->term) ) ); |
---|
1218 | } |
---|
1219 | } |
---|
1220 | } |
---|
1221 | |
---|
1222 | |
---|
1223 | trigger_notify('qsearch_expression_parsed', $expression); |
---|
1224 | //var_export($expression); |
---|
1225 | |
---|
1226 | if (count($expression->stokens)==0) |
---|
1227 | { |
---|
1228 | return $search_results; |
---|
1229 | } |
---|
1230 | $qsr = new QResults; |
---|
1231 | qsearch_get_tags($expression, $qsr); |
---|
1232 | qsearch_get_images($expression, $qsr); |
---|
1233 | |
---|
1234 | // allow plugins to evaluate their own scopes |
---|
1235 | trigger_notify('qsearch_before_eval', $expression, $qsr); |
---|
1236 | |
---|
1237 | $ids = qsearch_eval($expression, $qsr, $tmp, $search_results['qs']['unmatched_terms']); |
---|
1238 | |
---|
1239 | $debug[] = "<!--\nparsed: ".$expression; |
---|
1240 | $debug[] = count($expression->stokens).' tokens'; |
---|
1241 | for ($i=0; $i<count($expression->stokens); $i++) |
---|
1242 | { |
---|
1243 | $debug[] = $expression->stokens[$i].': '.count($qsr->tag_ids[$i]).' tags, '.count($qsr->tag_iids[$i]).' tiids, '.count($qsr->images_iids[$i]).' iiids, '.count($qsr->iids[$i]).' iids' |
---|
1244 | .' modifier:'.dechex($expression->stoken_modifiers[$i]) |
---|
1245 | .( !empty($expression->stokens[$i]->variants) ? ' variants: '.implode(', ',$expression->stokens[$i]->variants): ''); |
---|
1246 | } |
---|
1247 | $debug[] = 'before perms '.count($ids); |
---|
1248 | |
---|
1249 | $search_results['qs']['matching_tags'] = $qsr->all_tags; |
---|
1250 | global $template; |
---|
1251 | |
---|
1252 | if (empty($ids)) |
---|
1253 | { |
---|
1254 | $debug[] = '-->'; |
---|
1255 | $template->append('footer_elements', implode("\n", $debug) ); |
---|
1256 | return $search_results; |
---|
1257 | } |
---|
1258 | |
---|
1259 | $permissions = !isset($options['permissions']) ? true : $options['permissions']; |
---|
1260 | |
---|
1261 | $where_clauses = array(); |
---|
1262 | $where_clauses[]='i.id IN ('. implode(',', $ids) . ')'; |
---|
1263 | if (!empty($options['images_where'])) |
---|
1264 | { |
---|
1265 | $where_clauses[]='('.$options['images_where'].')'; |
---|
1266 | } |
---|
1267 | if ($permissions) |
---|
1268 | { |
---|
1269 | $where_clauses[] = get_sql_condition_FandF( |
---|
1270 | array |
---|
1271 | ( |
---|
1272 | 'forbidden_categories' => 'category_id', |
---|
1273 | 'forbidden_images' => 'i.id' |
---|
1274 | ), |
---|
1275 | null,true |
---|
1276 | ); |
---|
1277 | } |
---|
1278 | |
---|
1279 | $query = ' |
---|
1280 | SELECT DISTINCT(id) FROM '.IMAGES_TABLE.' i'; |
---|
1281 | if ($permissions) |
---|
1282 | { |
---|
1283 | $query .= ' |
---|
1284 | INNER JOIN '.IMAGE_CATEGORY_TABLE.' AS ic ON id = ic.image_id'; |
---|
1285 | } |
---|
1286 | $query .= ' |
---|
1287 | WHERE '.implode("\n AND ", $where_clauses)."\n". |
---|
1288 | $conf['order_by']; |
---|
1289 | |
---|
1290 | $ids = query2array($query, null, 'id'); |
---|
1291 | |
---|
1292 | $debug[] = count($ids).' final photo count -->'; |
---|
1293 | $template->append('footer_elements', implode("\n", $debug) ); |
---|
1294 | |
---|
1295 | $search_results['items'] = $ids; |
---|
1296 | return $search_results; |
---|
1297 | } |
---|
1298 | |
---|
1299 | /** |
---|
1300 | * Returns an array of 'items' corresponding to the search id. |
---|
1301 | * It can be either a quick search or a regular search. |
---|
1302 | * |
---|
1303 | * @param int $search_id |
---|
1304 | * @param bool $super_order_by |
---|
1305 | * @param string $images_where optional aditional restriction on images table |
---|
1306 | * @return array |
---|
1307 | */ |
---|
1308 | function get_search_results($search_id, $super_order_by, $images_where='') |
---|
1309 | { |
---|
1310 | $search = get_search_array($search_id); |
---|
1311 | if ( !isset($search['q']) ) |
---|
1312 | { |
---|
1313 | $result['items'] = get_regular_search_results($search, $images_where); |
---|
1314 | return $result; |
---|
1315 | } |
---|
1316 | else |
---|
1317 | { |
---|
1318 | return get_quick_search_results($search['q'], array('super_order_by'=>$super_order_by, 'images_where'=>$images_where) ); |
---|
1319 | } |
---|
1320 | } |
---|
1321 | |
---|
1322 | ?> |
---|