Skip to content

Instantly share code, notes, and snippets.

@szepeviktor

szepeviktor/latin-accents.php

Created January 25, 2014 12:54
Show Gist options
  • Save szepeviktor/8615954 to your computer and use it in GitHub Desktop.
Save szepeviktor/8615954 to your computer and use it in GitHub Desktop.
Download ZIP
Keep latin accents in WordPress - an mu plugin
Raw
latin-accents.php
<?php
/*
Plugin Name: Keep Latin accents
Plugin URI: http://awordpress.net/blog/accents-in-wordpress-permalinks/
Description: Keep Latin accents in URLs
Version: 3.0
Author: Pavel (aka Immortal) Petrov
Author URI: http://www.webbamboo.net/
License: GPL2
*/
add_filter('sanitize_title', 'restore_nonlatin_title', 9, 3);
/**
* Restore title with accents
*/
function restore_nonlatin_title($title, $raw_title, $context)
{
if ( $context == 'save' ) {
return remove_nonlatin_accents($raw_title);
} else {
return $title;
}
}
/**
* Remove non-Latin accents
*/
function remove_nonlatin_accents($string) {
if ( !preg_match('/[\x80-\xff]/', $string) )
return $string;
// FIXME altgr(0..Ó,Ő,Ű) -> ''
/*
§
ˇ
˘
˛
˙
´
˝
¨
¸
÷
¤
*/
if (seems_utf8($string)) {
$chars = array(
// Decompositions for Latin-1 Supplement
/* chr(194).chr(170) => 'a', chr(194).chr(186) => 'o',
chr(195).chr(128) => 'A', chr(195).chr(129) => 'A',
chr(195).chr(130) => 'A', chr(195).chr(131) => 'A',
chr(195).chr(132) => 'A', chr(195).chr(133) => 'A',
chr(195).chr(134) => 'AE',chr(195).chr(135) => 'C',
chr(195).chr(136) => 'E', chr(195).chr(137) => 'E',
chr(195).chr(138) => 'E', chr(195).chr(139) => 'E',
chr(195).chr(140) => 'I', chr(195).chr(141) => 'I',
chr(195).chr(142) => 'I', chr(195).chr(143) => 'I',
chr(195).chr(144) => 'D', chr(195).chr(145) => 'N',
chr(195).chr(146) => 'O', chr(195).chr(147) => 'O',
chr(195).chr(148) => 'O', chr(195).chr(149) => 'O',
chr(195).chr(150) => 'O', chr(195).chr(153) => 'U',
chr(195).chr(154) => 'U', chr(195).chr(155) => 'U',
chr(195).chr(156) => 'U', chr(195).chr(157) => 'Y',
chr(195).chr(158) => 'TH',chr(195).chr(159) => 's',
chr(195).chr(160) => 'a', chr(195).chr(161) => 'a',
chr(195).chr(162) => 'a', chr(195).chr(163) => 'a',
chr(195).chr(164) => 'a', chr(195).chr(165) => 'a',
chr(195).chr(166) => 'ae',chr(195).chr(167) => 'c',
chr(195).chr(168) => 'e', chr(195).chr(169) => 'e',
chr(195).chr(170) => 'e', chr(195).chr(171) => 'e',
chr(195).chr(172) => 'i', chr(195).chr(173) => 'i',
chr(195).chr(174) => 'i', chr(195).chr(175) => 'i',
chr(195).chr(176) => 'd', chr(195).chr(177) => 'n',
chr(195).chr(178) => 'o', chr(195).chr(179) => 'o',
chr(195).chr(180) => 'o', chr(195).chr(181) => 'o',
chr(195).chr(182) => 'o', chr(195).chr(184) => 'o',
chr(195).chr(185) => 'u', chr(195).chr(186) => 'u',
chr(195).chr(187) => 'u', chr(195).chr(188) => 'u',
chr(195).chr(189) => 'y', chr(195).chr(190) => 'th',
chr(195).chr(191) => 'y', chr(195).chr(152) => 'O',
// Decompositions for Latin Extended-A
chr(196).chr(128) => 'A', chr(196).chr(129) => 'a',
chr(196).chr(130) => 'A', chr(196).chr(131) => 'a',
chr(196).chr(132) => 'A', chr(196).chr(133) => 'a',
chr(196).chr(134) => 'C', chr(196).chr(135) => 'c',
chr(196).chr(136) => 'C', chr(196).chr(137) => 'c',
chr(196).chr(138) => 'C', chr(196).chr(139) => 'c',
chr(196).chr(140) => 'C', chr(196).chr(141) => 'c',
chr(196).chr(142) => 'D', chr(196).chr(143) => 'd',
chr(196).chr(144) => 'D', chr(196).chr(145) => 'd',
chr(196).chr(146) => 'E', chr(196).chr(147) => 'e',
chr(196).chr(148) => 'E', chr(196).chr(149) => 'e',
chr(196).chr(150) => 'E', chr(196).chr(151) => 'e',
chr(196).chr(152) => 'E', chr(196).chr(153) => 'e',
chr(196).chr(154) => 'E', chr(196).chr(155) => 'e',
chr(196).chr(156) => 'G', chr(196).chr(157) => 'g',
chr(196).chr(158) => 'G', chr(196).chr(159) => 'g',
chr(196).chr(160) => 'G', chr(196).chr(161) => 'g',
chr(196).chr(162) => 'G', chr(196).chr(163) => 'g',
chr(196).chr(164) => 'H', chr(196).chr(165) => 'h',
chr(196).chr(166) => 'H', chr(196).chr(167) => 'h',
chr(196).chr(168) => 'I', chr(196).chr(169) => 'i',
chr(196).chr(170) => 'I', chr(196).chr(171) => 'i',
chr(196).chr(172) => 'I', chr(196).chr(173) => 'i',
chr(196).chr(174) => 'I', chr(196).chr(175) => 'i',
chr(196).chr(176) => 'I', chr(196).chr(177) => 'i',
chr(196).chr(178) => 'IJ',chr(196).chr(179) => 'ij',
chr(196).chr(180) => 'J', chr(196).chr(181) => 'j',
chr(196).chr(182) => 'K', chr(196).chr(183) => 'k',
chr(196).chr(184) => 'k', chr(196).chr(185) => 'L',
chr(196).chr(186) => 'l', chr(196).chr(187) => 'L',
chr(196).chr(188) => 'l', chr(196).chr(189) => 'L',
chr(196).chr(190) => 'l', chr(196).chr(191) => 'L',
chr(197).chr(128) => 'l', chr(197).chr(129) => 'L',
chr(197).chr(130) => 'l', chr(197).chr(131) => 'N',
chr(197).chr(132) => 'n', chr(197).chr(133) => 'N',
chr(197).chr(134) => 'n', chr(197).chr(135) => 'N',
chr(197).chr(136) => 'n', chr(197).chr(137) => 'N',
chr(197).chr(138) => 'n', chr(197).chr(139) => 'N',
chr(197).chr(140) => 'O', chr(197).chr(141) => 'o',
chr(197).chr(142) => 'O', chr(197).chr(143) => 'o',
chr(197).chr(144) => 'O', chr(197).chr(145) => 'o',
chr(197).chr(146) => 'OE',chr(197).chr(147) => 'oe',
chr(197).chr(148) => 'R',chr(197).chr(149) => 'r',
chr(197).chr(150) => 'R',chr(197).chr(151) => 'r',
chr(197).chr(152) => 'R',chr(197).chr(153) => 'r',
chr(197).chr(154) => 'S',chr(197).chr(155) => 's',
chr(197).chr(156) => 'S',chr(197).chr(157) => 's',
chr(197).chr(158) => 'S',chr(197).chr(159) => 's',
chr(197).chr(160) => 'S', chr(197).chr(161) => 's',
chr(197).chr(162) => 'T', chr(197).chr(163) => 't',
chr(197).chr(164) => 'T', chr(197).chr(165) => 't',
chr(197).chr(166) => 'T', chr(197).chr(167) => 't',
chr(197).chr(168) => 'U', chr(197).chr(169) => 'u',
chr(197).chr(170) => 'U', chr(197).chr(171) => 'u',
chr(197).chr(172) => 'U', chr(197).chr(173) => 'u',
chr(197).chr(174) => 'U', chr(197).chr(175) => 'u',
chr(197).chr(176) => 'U', chr(197).chr(177) => 'u',
chr(197).chr(178) => 'U', chr(197).chr(179) => 'u',
chr(197).chr(180) => 'W', chr(197).chr(181) => 'w',
chr(197).chr(182) => 'Y', chr(197).chr(183) => 'y',
chr(197).chr(184) => 'Y', chr(197).chr(185) => 'Z',
chr(197).chr(186) => 'z', chr(197).chr(187) => 'Z',
chr(197).chr(188) => 'z', chr(197).chr(189) => 'Z',
chr(197).chr(190) => 'z', chr(197).chr(191) => 's',
// Decompositions for Latin Extended-B
chr(200).chr(152) => 'S', chr(200).chr(153) => 's',
chr(200).chr(154) => 'T', chr(200).chr(155) => 't',
*/
// Euro Sign
chr(226).chr(130).chr(172) => 'E',
// GBP (Pound) Sign
chr(194).chr(163) => '',
// Vowels with diacritic (Vietnamese)
// unmarked
chr(198).chr(160) => 'O', chr(198).chr(161) => 'o',
chr(198).chr(175) => 'U', chr(198).chr(176) => 'u',
// grave accent
chr(225).chr(186).chr(166) => 'A', chr(225).chr(186).chr(167) => 'a',
chr(225).chr(186).chr(176) => 'A', chr(225).chr(186).chr(177) => 'a',
chr(225).chr(187).chr(128) => 'E', chr(225).chr(187).chr(129) => 'e',
chr(225).chr(187).chr(146) => 'O', chr(225).chr(187).chr(147) => 'o',
chr(225).chr(187).chr(156) => 'O', chr(225).chr(187).chr(157) => 'o',
chr(225).chr(187).chr(170) => 'U', chr(225).chr(187).chr(171) => 'u',
chr(225).chr(187).chr(178) => 'Y', chr(225).chr(187).chr(179) => 'y',
// hook
chr(225).chr(186).chr(162) => 'A', chr(225).chr(186).chr(163) => 'a',
chr(225).chr(186).chr(168) => 'A', chr(225).chr(186).chr(169) => 'a',
chr(225).chr(186).chr(178) => 'A', chr(225).chr(186).chr(179) => 'a',
chr(225).chr(186).chr(186) => 'E', chr(225).chr(186).chr(187) => 'e',
chr(225).chr(187).chr(130) => 'E', chr(225).chr(187).chr(131) => 'e',
chr(225).chr(187).chr(136) => 'I', chr(225).chr(187).chr(137) => 'i',
chr(225).chr(187).chr(142) => 'O', chr(225).chr(187).chr(143) => 'o',
chr(225).chr(187).chr(148) => 'O', chr(225).chr(187).chr(149) => 'o',
chr(225).chr(187).chr(158) => 'O', chr(225).chr(187).chr(159) => 'o',
chr(225).chr(187).chr(166) => 'U', chr(225).chr(187).chr(167) => 'u',
chr(225).chr(187).chr(172) => 'U', chr(225).chr(187).chr(173) => 'u',
chr(225).chr(187).chr(182) => 'Y', chr(225).chr(187).chr(183) => 'y',
// tilde
chr(225).chr(186).chr(170) => 'A', chr(225).chr(186).chr(171) => 'a',
chr(225).chr(186).chr(180) => 'A', chr(225).chr(186).chr(181) => 'a',
chr(225).chr(186).chr(188) => 'E', chr(225).chr(186).chr(189) => 'e',
chr(225).chr(187).chr(132) => 'E', chr(225).chr(187).chr(133) => 'e',
chr(225).chr(187).chr(150) => 'O', chr(225).chr(187).chr(151) => 'o',
chr(225).chr(187).chr(160) => 'O', chr(225).chr(187).chr(161) => 'o',
chr(225).chr(187).chr(174) => 'U', chr(225).chr(187).chr(175) => 'u',
chr(225).chr(187).chr(184) => 'Y', chr(225).chr(187).chr(185) => 'y',
// acute accent
chr(225).chr(186).chr(164) => 'A', chr(225).chr(186).chr(165) => 'a',
chr(225).chr(186).chr(174) => 'A', chr(225).chr(186).chr(175) => 'a',
chr(225).chr(186).chr(190) => 'E', chr(225).chr(186).chr(191) => 'e',
chr(225).chr(187).chr(144) => 'O', chr(225).chr(187).chr(145) => 'o',
chr(225).chr(187).chr(154) => 'O', chr(225).chr(187).chr(155) => 'o',
chr(225).chr(187).chr(168) => 'U', chr(225).chr(187).chr(169) => 'u',
// dot below
chr(225).chr(186).chr(160) => 'A', chr(225).chr(186).chr(161) => 'a',
chr(225).chr(186).chr(172) => 'A', chr(225).chr(186).chr(173) => 'a',
chr(225).chr(186).chr(182) => 'A', chr(225).chr(186).chr(183) => 'a',
chr(225).chr(186).chr(184) => 'E', chr(225).chr(186).chr(185) => 'e',
chr(225).chr(187).chr(134) => 'E', chr(225).chr(187).chr(135) => 'e',
chr(225).chr(187).chr(138) => 'I', chr(225).chr(187).chr(139) => 'i',
chr(225).chr(187).chr(140) => 'O', chr(225).chr(187).chr(141) => 'o',
chr(225).chr(187).chr(152) => 'O', chr(225).chr(187).chr(153) => 'o',
chr(225).chr(187).chr(162) => 'O', chr(225).chr(187).chr(163) => 'o',
chr(225).chr(187).chr(164) => 'U', chr(225).chr(187).chr(165) => 'u',
chr(225).chr(187).chr(176) => 'U', chr(225).chr(187).chr(177) => 'u',
chr(225).chr(187).chr(180) => 'Y', chr(225).chr(187).chr(181) => 'y',
// Vowels with diacritic (Chinese, Hanyu Pinyin)
chr(201).chr(145) => 'a',
// macron
chr(199).chr(149) => 'U', chr(199).chr(150) => 'u',
// acute accent
chr(199).chr(151) => 'U', chr(199).chr(152) => 'u',
// caron
chr(199).chr(141) => 'A', chr(199).chr(142) => 'a',
chr(199).chr(143) => 'I', chr(199).chr(144) => 'i',
chr(199).chr(145) => 'O', chr(199).chr(146) => 'o',
chr(199).chr(147) => 'U', chr(199).chr(148) => 'u',
chr(199).chr(153) => 'U', chr(199).chr(154) => 'u',
// grave accent
chr(199).chr(155) => 'U', chr(199).chr(156) => 'u',
);
// Used for locale-specific rules
$locale = get_locale();
if ( 'de_DE' == $locale ) {
$chars[ chr(195).chr(132) ] = 'Ae';
$chars[ chr(195).chr(164) ] = 'ae';
$chars[ chr(195).chr(150) ] = 'Oe';
$chars[ chr(195).chr(182) ] = 'oe';
$chars[ chr(195).chr(156) ] = 'Ue';
$chars[ chr(195).chr(188) ] = 'ue';
$chars[ chr(195).chr(159) ] = 'ss';
}
$string = strtr($string, $chars);
} else {
// Assume ISO-8859-1 if not UTF-8
$chars['in'] = chr(128).chr(131).chr(138).chr(142).chr(154).chr(158)
.chr(159).chr(162).chr(165).chr(181).chr(192).chr(193).chr(194)
.chr(195).chr(196).chr(197).chr(199).chr(200).chr(201).chr(202)
.chr(203).chr(204).chr(205).chr(206).chr(207).chr(209).chr(210)
.chr(211).chr(212).chr(213).chr(214).chr(216).chr(217).chr(218)
.chr(219).chr(220).chr(221).chr(224).chr(225).chr(226).chr(227)
.chr(228).chr(229).chr(231).chr(232).chr(233).chr(234).chr(235)
.chr(236).chr(237).chr(238).chr(239).chr(241).chr(242).chr(243)
.chr(244).chr(245).chr(246).chr(248).chr(249).chr(250).chr(251)
.chr(252).chr(253).chr(255);
$chars['out'] = "EfSZszYcYuAAAAAACEEEEIIIINOOOOOOUUUUYaaaaaaceeeeiiiinoooooouuuuyy";
$string = strtr($string, $chars['in'], $chars['out']);
$double_chars['in'] = array(chr(140), chr(156), chr(198), chr(208), chr(222), chr(223), chr(230), chr(240), chr(254));
$double_chars['out'] = array('OE', 'oe', 'AE', 'DH', 'TH', 'ss', 'ae', 'dh', 'th');
$string = str_replace($double_chars['in'], $double_chars['out'], $string);
}
return $string;
}
Sign up for free to join this conversation on GitHub. Already have an account? Sign in to comment