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1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 162 163 164 165 166 167 168 169 170 171 172 173 174 175 176 177 178 179 180 181 182 183 184 185 186 187 188 189 190 191 192 193 194 195 196 197 198 199 200 201 202 203 204 205 206 207 208 209 210 211 212 213 214 215 216 217 218 | <?php /* -*- tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */ /* # ***** BEGIN LICENSE BLOCK ***** # This file is part of Plume Framework, a simple PHP Application Framework. # Copyright (C) 2001-2007 Loic d'Anterroches and contributors. # # Plume Framework is free software; you can redistribute it and/or modify # it under the terms of the GNU Lesser General Public License as published by # the Free Software Foundation; either version 2.1 of the License, or # (at your option) any later version. # # Plume Framework is distributed in the hope that it will be useful, # but WITHOUT ANY WARRANTY; without even the implied warranty of # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the # GNU Lesser General Public License for more details. # # You should have received a copy of the GNU Lesser General Public License # along with this program; if not, write to the Free Software # Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA # # ***** END LICENSE BLOCK ***** */ /** * Utility class to clean/manipulate strings. */ class Pluf_Text { /** * Given a string, cleaned from the not interesting characters, * returns an array with the words as index and the number of * times it was in the text as the value. * * @credits Tokenizer of DokuWiki to handle Thai and CJK words. * * @param string Cleaned, lowercased and utf-8 encoded string. * @param bool Remove the accents (True) * @return array Word and number of occurences. */ public static function tokenize( $string , $remove_accents =True) { if ( $remove_accents ) { $string = self::removeAccents( $string ); } $asian1 = '[\x{0E00}-\x{0E7F}]' ; // Thai $asian2 = '[' . '\x{2E80}-\x{3040}' . // CJK -> Hangul '\x{309D}-\x{30A0}' . '\x{30FD}-\x{31EF}\x{3200}-\x{D7AF}' . '\x{F900}-\x{FAFF}' . // CJK Compatibility Ideographs '\x{FE30}-\x{FE4F}' . // CJK Compatibility Forms ']' ; $asian3 = '[' . // Hiragana/Katakana (can be two characters) '\x{3042}\x{3044}\x{3046}\x{3048}' . '\x{304A}-\x{3062}\x{3064}-\x{3082}' . '\x{3084}\x{3086}\x{3088}-\x{308D}' . '\x{308F}-\x{3094}' . '\x{30A2}\x{30A4}\x{30A6}\x{30A8}' . '\x{30AA}-\x{30C2}\x{30C4}-\x{30E2}' . '\x{30E4}\x{30E6}\x{30E8}-\x{30ED}' . '\x{30EF}-\x{30F4}\x{30F7}-\x{30FA}' . '][' . '\x{3041}\x{3043}\x{3045}\x{3047}\x{3049}' . '\x{3063}\x{3083}\x{3085}\x{3087}\x{308E}\x{3095}-\x{309C}' . '\x{30A1}\x{30A3}\x{30A5}\x{30A7}\x{30A9}' . '\x{30C3}\x{30E3}\x{30E5}\x{30E7}\x{30EE}\x{30F5}\x{30F6}\x{30FB}\x{30FC}' . '\x{31F0}-\x{31FF}' . ']?' ; $asian = '(?:' . $asian1 . '|' . $asian2 . '|' . $asian3 . ')' ; $words = array (); // handle asian chars as single words. $asia = @preg_replace( '/(' . $asian . ')/u' , ' \1 ' , $string ); if (! is_null ( $asia )) { //will not be called if regexp failure $string = $asia ; } $arr = preg_split( '/\s+/' , $string , -1, PREG_SPLIT_NO_EMPTY); foreach ( $arr as $w ) { $w = trim( $w ); if (isset( $words [ $w ])) { $words [ $w ]++; } else { $words [ $w ] = 1; } } return $words ; } /** * Clean a string from the HTML and the unnecessary * punctuation. Convert the string to lowercase. * * @info Require mbstring extension. * * @param string String. * @return string Cleaned lowercase string. */ public static function cleanString( $string ) { $string = html_entity_decode( $string , ENT_QUOTES, 'utf-8' ); $string = str_replace ( '<?php' , '' , $string ); $string = strip_tags ( $string ); $string = strtr ( $string , "\r\n\t" , ' ' ); $string = strtr ( $string , '.<>,;:(){}[]\\|*@!?^_=/\'~`%$#' , ' ' ); return mb_strtolower( $string , 'UTF-8' ); } /** * Remove the accentuated characters. * * Requires a string in lowercase, the removal is not perfect but * is better than nothing. * * @param string Lowercased string in utf-8. * @return string String with some of the accents removed. */ public static function removeAccents( $string ) { $map = array ( 'à' => 'a' , 'ô' => 'o' , 'ď' => 'd' , 'ḟ' => 'f' , 'ë' => 'e' , 'š' => 's' , 'ơ' => 'o' , 'ß' => 'ss' , 'ă' => 'a' , 'ř' => 'r' , 'ț' => 't' , 'ň' => 'n' , 'ā' => 'a' , 'ķ' => 'k' , 'ŝ' => 's' , 'ỳ' => 'y' , 'ņ' => 'n' , 'ĺ' => 'l' , 'ħ' => 'h' , 'ṗ' => 'p' , 'ó' => 'o' , 'ú' => 'u' , 'ě' => 'e' , 'é' => 'e' , 'ç' => 'c' , 'ẁ' => 'w' , 'ċ' => 'c' , 'õ' => 'o' , 'ṡ' => 's' , 'ø' => 'o' , 'ģ' => 'g' , 'ŧ' => 't' , 'ș' => 's' , 'ė' => 'e' , 'ĉ' => 'c' , 'ś' => 's' , 'î' => 'i' , 'ű' => 'u' , 'ć' => 'c' , 'ę' => 'e' , 'ŵ' => 'w' , 'ṫ' => 't' , 'ū' => 'u' , 'č' => 'c' , 'ö' => 'oe' , 'è' => 'e' , 'ŷ' => 'y' , 'ą' => 'a' , 'ł' => 'l' , 'ų' => 'u' , 'ů' => 'u' , 'ş' => 's' , 'ğ' => 'g' , 'ļ' => 'l' , 'ƒ' => 'f' , 'ž' => 'z' , 'ẃ' => 'w' , 'ḃ' => 'b' , 'å' => 'a' , 'ì' => 'i' , 'ï' => 'i' , 'ḋ' => 'd' , 'ť' => 't' , 'ŗ' => 'r' , 'ä' => 'ae' , 'í' => 'i' , 'ŕ' => 'r' , 'ê' => 'e' , 'ü' => 'ue' , 'ò' => 'o' , 'ē' => 'e' , 'ñ' => 'n' , 'ń' => 'n' , 'ĥ' => 'h' , 'ĝ' => 'g' , 'đ' => 'd' , 'ĵ' => 'j' , 'ÿ' => 'y' , 'ũ' => 'u' , 'ŭ' => 'u' , 'ư' => 'u' , 'ţ' => 't' , 'ý' => 'y' , 'ő' => 'o' , 'â' => 'a' , 'ľ' => 'l' , 'ẅ' => 'w' , 'ż' => 'z' , 'ī' => 'i' , 'ã' => 'a' , 'ġ' => 'g' , 'ṁ' => 'm' , 'ō' => 'o' , 'ĩ' => 'i' , 'ù' => 'u' , 'į' => 'i' , 'ź' => 'z' , 'á' => 'a' , 'û' => 'u' , 'þ' => 'th' , 'ð' => 'dh' , 'æ' => 'ae' , 'µ' => 'u' , 'ĕ' => 'e' , ); return strtr ( $string , $map ); } /** * Convert a string to a list of characters. * * @param string utf-8 encoded string. * @return array Characters. */ public static function stringToChars( $string ) { $chars = array (); $strlen = mb_strlen( $string , 'UTF-8' ); for ( $i =0; $i < $strlen ; $i ++) { $chars [] = mb_substr( $string , $i , 1, 'UTF-8' ); } return $chars ; } /** * Prevent a string to be all uppercase. * * If more than 50% of the words in the string are uppercases and * if the string contains more than one word, the string is * converted using the mb_convert_case. * * * @param string String to test. * @param int Mode to convert the string (MB_CASE_TITLE) * @return string Cleaned string. */ public static function preventUpperCase( $string , $mode =MB_CASE_TITLE) { $elts = mb_split( ' ' , $string ); $n_elts = count ( $elts ); if ( $n_elts > 1) { $tot = 0; foreach ( $elts as $elt ) { if ( $elt == '' ) { $n_elts --; continue ; } if ( $elt == mb_strtoupper( $elt , 'UTF-8' )) { $tot ++; } } if ( (float) $tot / (float) $n_elts >= 0.5) { return mb_convert_case(mb_strtolower( $string , 'UTF-8' ), $mode , 'UTF-8' ); } } return $string ; } /** * Simple uppercase prevention. * * Contrary to self::preventUpperCase, this method will also * prevent a single word to be uppercase. * * @param string String possibly in uppercase. * @param int Mode to convert the string (MB_CASE_TITLE) * @return string Mode cased if all uppercase in input. */ public static function simplePreventUpperCase( $string , $mode =MB_CASE_TITLE) { if ( $string == mb_strtoupper( $string )) { return mb_convert_case(mb_strtolower( $string ), $mode , 'UTF-8' ); } return $string ; } } |