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Wordpress/wp-includes/formatting.php

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<?php
function wptexturize($text) {
global $wp_cockneyreplace;
$output = '';
// Capture tags and everything inside them
$textarr = preg_split("/(<.*>)/Us", $text, -1, PREG_SPLIT_DELIM_CAPTURE);
$stop = count($textarr); $next = true; // loop stuff
for ($i = 0; $i < $stop; $i++) {
$curl = $textarr[$i];
if (isset($curl{0}) && '<' != $curl{0} && $next) { // If it's not a tag
$curl = str_replace('---', '&#8212;', $curl);
$curl = str_replace(' -- ', ' &#8212; ', $curl);
$curl = str_replace('--', '&#8211;', $curl);
$curl = str_replace('xn&#8211;', 'xn--', $curl);
$curl = str_replace('...', '&#8230;', $curl);
$curl = str_replace('``', '&#8220;', $curl);
// if a plugin has provided an autocorrect array, use it
if ( isset($wp_cockneyreplace) ) {
$cockney = array_keys($wp_cockneyreplace);
$cockney_replace = array_values($wp_cockneyreplace);
} else {
$cockney = array("'tain't","'twere","'twas","'tis","'twill","'til","'bout","'nuff","'round","'cause");
$cockneyreplace = array("&#8217;tain&#8217;t","&#8217;twere","&#8217;twas","&#8217;tis","&#8217;twill","&#8217;til","&#8217;bout","&#8217;nuff","&#8217;round","&#8217;cause");
}
$curl = str_replace($cockney, $cockneyreplace, $curl);
$curl = preg_replace("/'s/", '&#8217;s', $curl);
$curl = preg_replace("/'(\d\d(?:&#8217;|')?s)/", "&#8217;$1", $curl);
$curl = preg_replace('/(\s|\A|")\'/', '$1&#8216;', $curl);
$curl = preg_replace('/(\d+)"/', '$1&#8243;', $curl);
$curl = preg_replace("/(\d+)'/", '$1&#8242;', $curl);
$curl = preg_replace("/(\S)'([^'\s])/", "$1&#8217;$2", $curl);
$curl = preg_replace('/(\s|\A)"(?!\s)/', '$1&#8220;$2', $curl);
$curl = preg_replace('/"(\s|\S|\Z)/', '&#8221;$1', $curl);
$curl = preg_replace("/'([\s.]|\Z)/", '&#8217;$1', $curl);
$curl = preg_replace("/ \(tm\)/i", ' &#8482;', $curl);
$curl = str_replace("''", '&#8221;', $curl);
$curl = preg_replace('/(\d+)x(\d+)/', "$1&#215;$2", $curl);
} elseif (strstr($curl, '<code') || strstr($curl, '<pre') || strstr($curl, '<kbd' || strstr($curl, '<style') || strstr($curl, '<script'))) {
// strstr is fast
$next = false;
} else {
$next = true;
}
$curl = preg_replace('/&([^#])(?![a-zA-Z1-4]{1,8};)/', '&#038;$1', $curl);
$output .= $curl;
}
return $output;
}
function clean_pre($text) {
$text = str_replace('<br />', '', $text);
$text = str_replace('<p>', "\n", $text);
$text = str_replace('</p>', '', $text);
return $text;
}
function wpautop($pee, $br = 1) {
$pee = $pee . "\n"; // just to make things a little easier, pad the end
$pee = preg_replace('|<br />\s*<br />|', "\n\n", $pee);
// Space things out a little
$pee = preg_replace('!(<(?:table|thead|tfoot|caption|colgroup|tbody|tr|td|th|div|dl|dd|dt|ul|ol|li|pre|select|form|blockquote|address|math|p|h[1-6])[^>]*>)!', "\n$1", $pee);
$pee = preg_replace('!(</(?:table|thead|tfoot|caption|colgroup|tbody|tr|td|th|div|dl|dd|dt|ul|ol|li|pre|select|form|blockquote|address|math|p|h[1-6])>)!', "$1\n\n", $pee);
$pee = str_replace(array("\r\n", "\r"), "\n", $pee); // cross-platform newlines
$pee = preg_replace("/\n\n+/", "\n\n", $pee); // take care of duplicates
$pee = preg_replace('/\n?(.+?)(?:\n\s*\n|\z)/s', "<p>$1</p>\n", $pee); // make paragraphs, including one at the end
$pee = preg_replace('|<p>\s*?</p>|', '', $pee); // under certain strange conditions it could create a P of entirely whitespace
$pee = preg_replace('!<p>\s*(</?(?:table|thead|tfoot|caption|colgroup|tbody|tr|td|th|div|dl|dd|dt|ul|ol|li|hr|pre|select|form|blockquote|address|math|p|h[1-6])[^>]*>)\s*</p>!', "$1", $pee); // don't pee all over a tag
$pee = preg_replace("|<p>(<li.+?)</p>|", "$1", $pee); // problem with nested lists
$pee = preg_replace('|<p><blockquote([^>]*)>|i', "<blockquote$1><p>", $pee);
$pee = str_replace('</blockquote></p>', '</p></blockquote>', $pee);
$pee = preg_replace('!<p>\s*(</?(?:table|thead|tfoot|caption|colgroup|tbody|tr|td|th|div|dl|dd|dt|ul|ol|li|hr|pre|select|form|blockquote|address|math|p|h[1-6])[^>]*>)!', "$1", $pee);
$pee = preg_replace('!(</?(?:table|thead|tfoot|caption|colgroup|tbody|tr|td|th|div|dl|dd|dt|ul|ol|li|pre|select|form|blockquote|address|math|p|h[1-6])[^>]*>)\s*</p>!', "$1", $pee);
if ($br) {
$pee = preg_replace('/<(script|style).*?<\/\\1>/se', 'str_replace("\n", "<WPPreserveNewline />", "\\0")', $pee);
$pee = preg_replace('|(?<!<br />)\s*\n|', "<br />\n", $pee); // optionally make line breaks
$pee = str_replace('<WPPreserveNewline />', "\n", $pee);
}
$pee = preg_replace('!(</?(?:table|thead|tfoot|caption|tbody|tr|td|th|div|dl|dd|dt|ul|ol|li|pre|select|form|blockquote|address|math|p|h[1-6])[^>]*>)\s*<br />!', "$1", $pee);
$pee = preg_replace('!<br />(\s*</?(?:p|li|div|dl|dd|dt|th|pre|td|ul|ol)[^>]*>)!', '$1', $pee);
$pee = preg_replace('!(<pre.*?>)(.*?)</pre>!ise', " stripslashes('$1') . stripslashes(clean_pre('$2')) . '</pre>' ", $pee);
return $pee;
}
function seems_utf8($Str) { # by bmorel at ssi dot fr
for ($i=0; $i<strlen($Str); $i++) {
if (ord($Str[$i]) < 0x80) continue; # 0bbbbbbb
elseif ((ord($Str[$i]) & 0xE0) == 0xC0) $n=1; # 110bbbbb
elseif ((ord($Str[$i]) & 0xF0) == 0xE0) $n=2; # 1110bbbb
elseif ((ord($Str[$i]) & 0xF8) == 0xF0) $n=3; # 11110bbb
elseif ((ord($Str[$i]) & 0xFC) == 0xF8) $n=4; # 111110bb
elseif ((ord($Str[$i]) & 0xFE) == 0xFC) $n=5; # 1111110b
else return false; # Does not match any model
for ($j=0; $j<$n; $j++) { # n bytes matching 10bbbbbb follow ?
if ((++$i == strlen($Str)) || ((ord($Str[$i]) & 0xC0) != 0x80))
return false;
}
}
return true;
}
function wp_specialchars( $text, $quotes = 0 ) {
// Like htmlspecialchars except don't double-encode HTML entities
$text = preg_replace('/&([^#])(?![a-z1-4]{1,8};)/', '&#038;$1', $text);
$text = str_replace('<', '&lt;', $text);
$text = str_replace('>', '&gt;', $text);
if ( 'double' === $quotes ) {
$text = str_replace('"', '&quot;', $text);
} elseif ( 'single' === $quotes ) {
$text = str_replace("'", '&#039;', $text);
} elseif ( $quotes ) {
$text = str_replace('"', '&quot;', $text);
$text = str_replace("'", '&#039;', $text);
}
return $text;
}
function utf8_uri_encode( $utf8_string ) {
$unicode = '';
$values = array();
$num_octets = 1;
for ($i = 0; $i < strlen( $utf8_string ); $i++ ) {
$value = ord( $utf8_string[ $i ] );
if ( $value < 128 ) {
$unicode .= chr($value);
} else {
if ( count( $values ) == 0 ) $num_octets = ( $value < 224 ) ? 2 : 3;
$values[] = $value;
if ( count( $values ) == $num_octets ) {
if ($num_octets == 3) {
$unicode .= '%' . dechex($values[0]) . '%' . dechex($values[1]) . '%' . dechex($values[2]);
} else {
$unicode .= '%' . dechex($values[0]) . '%' . dechex($values[1]);
}
$values = array();
$num_octets = 1;
}
}
}
return $unicode;
}
function remove_accents($string) {
if ( !preg_match('/[\x80-\xff]/', $string) )
return $string;
if (seems_utf8($string)) {
$chars = array(
// Decompositions for Latin-1 Supplement
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(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(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(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(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(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(182) => '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(191) => 'y',
// 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',
// Euro Sign
chr(226).chr(130).chr(172) => 'E',
// GBP (Pound) Sign
chr(194).chr(163) => '');
$string = strtr($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;
}
function sanitize_user( $username, $strict = false ) {
$raw_username = $username;
$username = strip_tags($username);
// Kill octets
$username = preg_replace('|%([a-fA-F0-9][a-fA-F0-9])|', '', $username);
$username = preg_replace('/&.+?;/', '', $username); // Kill entities
// If strict, reduce to ASCII for max portability.
if ( $strict )
$username = preg_replace('|[^a-z0-9 _.\-@]|i', '', $username);
return apply_filters('sanitize_user', $username, $raw_username, $strict);
}
function sanitize_title($title, $fallback_title = '') {
$title = strip_tags($title);
$title = apply_filters('sanitize_title', $title);
if (empty($title)) {
$title = $fallback_title;
}
return $title;
}
function sanitize_title_with_dashes($title) {
$title = strip_tags($title);
// Preserve escaped octets.
$title = preg_replace('|%([a-fA-F0-9][a-fA-F0-9])|', '---$1---', $title);
// Remove percent signs that are not part of an octet.
$title = str_replace('%', '', $title);
// Restore octets.
$title = preg_replace('|---([a-fA-F0-9][a-fA-F0-9])---|', '%$1', $title);
$title = remove_accents($title);
if (seems_utf8($title)) {
if (function_exists('mb_strtolower')) {
$title = mb_strtolower($title, 'UTF-8');
}
$title = utf8_uri_encode($title);
}
$title = strtolower($title);
$title = preg_replace('/&.+?;/', '', $title); // kill entities
$title = preg_replace('/[^%a-z0-9 _-]/', '', $title);
$title = preg_replace('/\s+/', '-', $title);
$title = preg_replace('|-+|', '-', $title);
$title = trim($title, '-');
return $title;
}
function convert_chars($content, $flag = 'obsolete') {
// Translation of invalid Unicode references range to valid range
$wp_htmltranswinuni = array(
'&#128;' => '&#8364;', // the Euro sign
'&#129;' => '',
'&#130;' => '&#8218;', // these are Windows CP1252 specific characters
'&#131;' => '&#402;', // they would look weird on non-Windows browsers
'&#132;' => '&#8222;',
'&#133;' => '&#8230;',
'&#134;' => '&#8224;',
'&#135;' => '&#8225;',
'&#136;' => '&#710;',
'&#137;' => '&#8240;',
'&#138;' => '&#352;',
'&#139;' => '&#8249;',
'&#140;' => '&#338;',
'&#141;' => '',
'&#142;' => '&#382;',
'&#143;' => '',
'&#144;' => '',
'&#145;' => '&#8216;',
'&#146;' => '&#8217;',
'&#147;' => '&#8220;',
'&#148;' => '&#8221;',
'&#149;' => '&#8226;',
'&#150;' => '&#8211;',
'&#151;' => '&#8212;',
'&#152;' => '&#732;',
'&#153;' => '&#8482;',
'&#154;' => '&#353;',
'&#155;' => '&#8250;',
'&#156;' => '&#339;',
'&#157;' => '',
'&#158;' => '',
'&#159;' => '&#376;'
);
// Remove metadata tags
$content = preg_replace('/<title>(.+?)<\/title>/','',$content);
$content = preg_replace('/<category>(.+?)<\/category>/','',$content);
// Converts lone & characters into &#38; (a.k.a. &amp;)
$content = preg_replace('/&([^#])(?![a-z1-4]{1,8};)/i', '&#038;$1', $content);
// Fix Word pasting
$content = strtr($content, $wp_htmltranswinuni);
// Just a little XHTML help
$content = str_replace('<br>', '<br />', $content);
$content = str_replace('<hr>', '<hr />', $content);
return $content;
}
function funky_javascript_fix($text) {
// Fixes for browsers' javascript bugs
global $is_macIE, $is_winIE;
if ( $is_winIE || $is_macIE )
$text = preg_replace("/\%u([0-9A-F]{4,4})/e", "'&#'.base_convert('\\1',16,10).';'", $text);
return $text;
}
/*
balanceTags
Balances Tags of string using a modified stack.
@param text Text to be balanced
@return Returns balanced text
@author Leonard Lin (leonard@acm.org)
@version v1.1
@date November 4, 2001
@license GPL v2.0
@notes
@changelog
--- Modified by Scott Reilly (coffee2code) 02 Aug 2004
1.2 ***TODO*** Make better - change loop condition to $text
1.1 Fixed handling of append/stack pop order of end text
Added Cleaning Hooks
1.0 First Version
*/
function balanceTags($text, $is_comment = 0, $force = false) {
if ( !$force && get_option('use_balanceTags') == 0 )
return $text;
$tagstack = array(); $stacksize = 0; $tagqueue = ''; $newtext = '';
# WP bug fix for comments - in case you REALLY meant to type '< !--'
$text = str_replace('< !--', '< !--', $text);
# WP bug fix for LOVE <3 (and other situations with '<' before a number)
$text = preg_replace('#<([0-9]{1})#', '&lt;$1', $text);
while (preg_match("/<(\/?\w*)\s*([^>]*)>/",$text,$regex)) {
$newtext .= $tagqueue;
$i = strpos($text,$regex[0]);
$l = strlen($regex[0]);
// clear the shifter
$tagqueue = '';
// Pop or Push
if ($regex[1][0] == "/") { // End Tag
$tag = strtolower(substr($regex[1],1));
// if too many closing tags
if($stacksize <= 0) {
$tag = '';
//or close to be safe $tag = '/' . $tag;
}
// if stacktop value = tag close value then pop
else if ($tagstack[$stacksize - 1] == $tag) { // found closing tag
$tag = '</' . $tag . '>'; // Close Tag
// Pop
array_pop ($tagstack);
$stacksize--;
} else { // closing tag not at top, search for it
for ($j=$stacksize-1;$j>=0;$j--) {
if ($tagstack[$j] == $tag) {
// add tag to tagqueue
for ($k=$stacksize-1;$k>=$j;$k--){
$tagqueue .= '</' . array_pop ($tagstack) . '>';
$stacksize--;
}
break;
}
}
$tag = '';
}
} else { // Begin Tag
$tag = strtolower($regex[1]);
// Tag Cleaning
// If self-closing or '', don't do anything.
if((substr($regex[2],-1) == '/') || ($tag == '')) {
}
// ElseIf it's a known single-entity tag but it doesn't close itself, do so
elseif ($tag == 'br' || $tag == 'img' || $tag == 'hr' || $tag == 'input') {
$regex[2] .= '/';
} else { // Push the tag onto the stack
// If the top of the stack is the same as the tag we want to push, close previous tag
if (($stacksize > 0) && ($tag != 'div') && ($tagstack[$stacksize - 1] == $tag)) {
$tagqueue = '</' . array_pop ($tagstack) . '>';
$stacksize--;
}
$stacksize = array_push ($tagstack, $tag);
}
// Attributes
$attributes = $regex[2];
if($attributes) {
$attributes = ' '.$attributes;
}
$tag = '<'.$tag.$attributes.'>';
//If already queuing a close tag, then put this tag on, too
if ($tagqueue) {
$tagqueue .= $tag;
$tag = '';
}
}
$newtext .= substr($text,0,$i) . $tag;
$text = substr($text,$i+$l);
}
// Clear Tag Queue
$newtext .= $tagqueue;
// Add Remaining text
$newtext .= $text;
// Empty Stack
while($x = array_pop($tagstack)) {
$newtext .= '</' . $x . '>'; // Add remaining tags to close
}
// WP fix for the bug with HTML comments
$newtext = str_replace("< !--","<!--",$newtext);
$newtext = str_replace("< !--","< !--",$newtext);
return $newtext;
}
function force_balance_tags($text) {
return balanceTags($text, 0, true);
}
function format_to_edit($content, $richedit = false) {
$content = apply_filters('format_to_edit', $content);
if (! $richedit )
$content = htmlspecialchars($content);
return $content;
}
function format_to_post($content) {
global $wpdb;
$content = apply_filters('format_to_post', $content);
return $content;
}
function zeroise($number,$threshold) { // function to add leading zeros when necessary
return sprintf('%0'.$threshold.'s', $number);
}
function backslashit($string) {
$string = preg_replace('/^([0-9])/', '\\\\\\\\\1', $string);
$string = preg_replace('/([a-z])/i', '\\\\\1', $string);
return $string;
}
function trailingslashit($string) {
if ( '/' != substr($string, -1)) {
$string .= '/';
}
return $string;
}
function addslashes_gpc($gpc) {
global $wpdb;
if (get_magic_quotes_gpc()) {
$gpc = stripslashes($gpc);
}
return $wpdb->escape($gpc);
}
function stripslashes_deep($value)
{
$value = is_array($value) ?
array_map('stripslashes_deep', $value) :
stripslashes($value);
return $value;
}
function antispambot($emailaddy, $mailto=0) {
$emailNOSPAMaddy = '';
srand ((float) microtime() * 1000000);
for ($i = 0; $i < strlen($emailaddy); $i = $i + 1) {
$j = floor(rand(0, 1+$mailto));
if ($j==0) {
$emailNOSPAMaddy .= '&#'.ord(substr($emailaddy,$i,1)).';';
} elseif ($j==1) {
$emailNOSPAMaddy .= substr($emailaddy,$i,1);
} elseif ($j==2) {
$emailNOSPAMaddy .= '%'.zeroise(dechex(ord(substr($emailaddy, $i, 1))), 2);
}
}
$emailNOSPAMaddy = str_replace('@','&#64;',$emailNOSPAMaddy);
return $emailNOSPAMaddy;
}
function make_clickable($ret) {
$ret = ' ' . $ret;
// in testing, using arrays here was found to be faster
$ret = preg_replace(
array(
'#([\s>])([\w]+?://[\w\#$%&~/.\-;:=,?@\[\]+]*)#is',
'#([\s>])((www|ftp)\.[\w\#$%&~/.\-;:=,?@\[\]+]*)#is',
'#([\s>])([a-z0-9\-_.]+)@([^,< \n\r]+)#i'),
array(
'$1<a href="$2" rel="nofollow">$2</a>',
'$1<a href="http://$2" rel="nofollow">$2</a>',
'$1<a href="mailto:$2@$3">$2@$3</a>'),$ret);
// this one is not in an array because we need it to run last, for cleanup of accidental links within links
$ret = preg_replace("#(<a( [^>]+?>|>))<a [^>]+?>([^>]+?)</a></a>#i", "$1$3</a>", $ret);
$ret = trim($ret);
return $ret;
}
function wp_rel_nofollow( $text ) {
global $wpdb;
// This is a pre save filter, so text is already escaped.
$text = stripslashes($text);
$text = preg_replace('|<a (.+?)>|ie', "'<a ' . str_replace(' rel=\"nofollow\"','',stripslashes('$1')) . ' rel=\"nofollow\">'", $text);
$text = $wpdb->escape($text);
return $text;
}
function convert_smilies($text) {
global $wp_smiliessearch, $wp_smiliesreplace;
$output = '';
if (get_option('use_smilies')) {
// HTML loop taken from texturize function, could possible be consolidated
$textarr = preg_split("/(<.*>)/U", $text, -1, PREG_SPLIT_DELIM_CAPTURE); // capture the tags as well as in between
$stop = count($textarr);// loop stuff
for ($i = 0; $i < $stop; $i++) {
$content = $textarr[$i];
if ((strlen($content) > 0) && ('<' != $content{0})) { // If it's not a tag
$content = preg_replace($wp_smiliessearch, $wp_smiliesreplace, $content);
}
$output .= $content;
}
} else {
// return default text.
$output = $text;
}
return $output;
}
function is_email($user_email) {
$chars = "/^([a-z0-9+_]|\\-|\\.)+@(([a-z0-9_]|\\-)+\\.)+[a-z]{2,6}\$/i";
if(strstr($user_email, '@') && strstr($user_email, '.')) {
if (preg_match($chars, $user_email)) {
return true;
} else {
return false;
}
} else {
return false;
}
}
// used by wp-mail to handle charsets in email subjects
function wp_iso_descrambler($string) {
/* this may only work with iso-8859-1, I'm afraid */
if (!preg_match('#\=\?(.+)\?Q\?(.+)\?\=#i', $string, $matches)) {
return $string;
} else {
$subject = str_replace('_', ' ', $matches[2]);
$subject = preg_replace('#\=([0-9a-f]{2})#ei', "chr(hexdec(strtolower('$1')))", $subject);
return $subject;
}
}
// give it a date, it will give you the same date as GMT
function get_gmt_from_date($string) {
// note: this only substracts $time_difference from the given date
preg_match('#([0-9]{1,4})-([0-9]{1,2})-([0-9]{1,2}) ([0-9]{1,2}):([0-9]{1,2}):([0-9]{1,2})#', $string, $matches);
$string_time = gmmktime($matches[4], $matches[5], $matches[6], $matches[2], $matches[3], $matches[1]);
$string_gmt = gmdate('Y-m-d H:i:s', $string_time - get_option('gmt_offset') * 3600);
return $string_gmt;
}
// give it a GMT date, it will give you the same date with $time_difference added
function get_date_from_gmt($string) {
// note: this only adds $time_difference to the given date
preg_match('#([0-9]{1,4})-([0-9]{1,2})-([0-9]{1,2}) ([0-9]{1,2}):([0-9]{1,2}):([0-9]{1,2})#', $string, $matches);
$string_time = gmmktime($matches[4], $matches[5], $matches[6], $matches[2], $matches[3], $matches[1]);
$string_localtime = gmdate('Y-m-d H:i:s', $string_time + get_option('gmt_offset')*3600);
return $string_localtime;
}
// computes an offset in seconds from an iso8601 timezone
function iso8601_timezone_to_offset($timezone) {
// $timezone is either 'Z' or '[+|-]hhmm'
if ($timezone == 'Z') {
$offset = 0;
} else {
$sign = (substr($timezone, 0, 1) == '+') ? 1 : -1;
$hours = intval(substr($timezone, 1, 2));
$minutes = intval(substr($timezone, 3, 4)) / 60;
$offset = $sign * 3600 * ($hours + $minutes);
}
return $offset;
}
// converts an iso8601 date to MySQL DateTime format used by post_date[_gmt]
function iso8601_to_datetime($date_string, $timezone = USER) {
if ($timezone == GMT) {
preg_match('#([0-9]{4})([0-9]{2})([0-9]{2})T([0-9]{2}):([0-9]{2}):([0-9]{2})(Z|[\+|\-][0-9]{2,4}){0,1}#', $date_string, $date_bits);
if (!empty($date_bits[7])) { // we have a timezone, so let's compute an offset
$offset = iso8601_timezone_to_offset($date_bits[7]);
} else { // we don't have a timezone, so we assume user local timezone (not server's!)
$offset = 3600 * get_option('gmt_offset');
}
$timestamp = gmmktime($date_bits[4], $date_bits[5], $date_bits[6], $date_bits[2], $date_bits[3], $date_bits[1]);
$timestamp -= $offset;
return gmdate('Y-m-d H:i:s', $timestamp);
} elseif ($timezone == USER) {
return preg_replace('#([0-9]{4})([0-9]{2})([0-9]{2})T([0-9]{2}):([0-9]{2}):([0-9]{2})(Z|[\+|\-][0-9]{2,4}){0,1}#', '$1-$2-$3 $4:$5:$6', $date_string);
}
}
function popuplinks($text) {
// Comment text in popup windows should be filtered through this.
// Right now it's a moderately dumb function, ideally it would detect whether
// a target or rel attribute was already there and adjust its actions accordingly.
$text = preg_replace('/<a (.+?)>/i', "<a $1 target='_blank' rel='external'>", $text);
return $text;
}
function sanitize_email($email) {
return preg_replace('/[^a-z0-9+_.@-]/i', '', $email);
}
function human_time_diff( $from, $to = '' ) {
if ( empty($to) )
$to = time();
$diff = (int) abs($to - $from);
if ($diff <= 3600) {
$mins = round($diff / 60);
if ($mins <= 1)
$since = __('1 min');
else
$since = sprintf( __('%s mins'), $mins);
} else if (($diff <= 86400) && ($diff > 3600)) {
$hours = round($diff / 3600);
if ($hours <= 1)
$since = __('1 hour');
else
$since = sprintf( __('%s hours'), $hours );
} elseif ($diff >= 86400) {
$days = round($diff / 86400);
if ($days <= 1)
$since = __('1 day');
else
$since = sprintf( __('%s days'), $days );
}
return $since;
}
function wp_trim_excerpt($text) { // Fakes an excerpt if needed
global $post;
if ( '' == $text ) {
$text = get_the_content('');
$text = apply_filters('the_content', $text);
$text = str_replace(']]>', ']]&gt;', $text);
$text = strip_tags($text);
$excerpt_length = 55;
$words = explode(' ', $text, $excerpt_length + 1);
if (count($words) > $excerpt_length) {
array_pop($words);
array_push($words, '[...]');
$text = implode(' ', $words);
}
}
return $text;
}
function ent2ncr($text) {
$to_ncr = array(
'&quot;' => '&#34;',
'&amp;' => '&#38;',
'&frasl;' => '&#47;',
'&lt;' => '&#60;',
'&gt;' => '&#62;',
'|' => '&#124;',
'&nbsp;' => '&#160;',
'&iexcl;' => '&#161;',
'&cent;' => '&#162;',
'&pound;' => '&#163;',
'&curren;' => '&#164;',
'&yen;' => '&#165;',
'&brvbar;' => '&#166;',
'&brkbar;' => '&#166;',
'&sect;' => '&#167;',
'&uml;' => '&#168;',
'&die;' => '&#168;',
'&copy;' => '&#169;',
'&ordf;' => '&#170;',
'&laquo;' => '&#171;',
'&not;' => '&#172;',
'&shy;' => '&#173;',
'&reg;' => '&#174;',
'&macr;' => '&#175;',
'&hibar;' => '&#175;',
'&deg;' => '&#176;',
'&plusmn;' => '&#177;',
'&sup2;' => '&#178;',
'&sup3;' => '&#179;',
'&acute;' => '&#180;',
'&micro;' => '&#181;',
'&para;' => '&#182;',
'&middot;' => '&#183;',
'&cedil;' => '&#184;',
'&sup1;' => '&#185;',
'&ordm;' => '&#186;',
'&raquo;' => '&#187;',
'&frac14;' => '&#188;',
'&frac12;' => '&#189;',
'&frac34;' => '&#190;',
'&iquest;' => '&#191;',
'&Agrave;' => '&#192;',
'&Aacute;' => '&#193;',
'&Acirc;' => '&#194;',
'&Atilde;' => '&#195;',
'&Auml;' => '&#196;',
'&Aring;' => '&#197;',
'&AElig;' => '&#198;',
'&Ccedil;' => '&#199;',
'&Egrave;' => '&#200;',
'&Eacute;' => '&#201;',
'&Ecirc;' => '&#202;',
'&Euml;' => '&#203;',
'&Igrave;' => '&#204;',
'&Iacute;' => '&#205;',
'&Icirc;' => '&#206;',
'&Iuml;' => '&#207;',
'&ETH;' => '&#208;',
'&Ntilde;' => '&#209;',
'&Ograve;' => '&#210;',
'&Oacute;' => '&#211;',
'&Ocirc;' => '&#212;',
'&Otilde;' => '&#213;',
'&Ouml;' => '&#214;',
'&times;' => '&#215;',
'&Oslash;' => '&#216;',
'&Ugrave;' => '&#217;',
'&Uacute;' => '&#218;',
'&Ucirc;' => '&#219;',
'&Uuml;' => '&#220;',
'&Yacute;' => '&#221;',
'&THORN;' => '&#222;',
'&szlig;' => '&#223;',
'&agrave;' => '&#224;',
'&aacute;' => '&#225;',
'&acirc;' => '&#226;',
'&atilde;' => '&#227;',
'&auml;' => '&#228;',
'&aring;' => '&#229;',
'&aelig;' => '&#230;',
'&ccedil;' => '&#231;',
'&egrave;' => '&#232;',
'&eacute;' => '&#233;',
'&ecirc;' => '&#234;',
'&euml;' => '&#235;',
'&igrave;' => '&#236;',
'&iacute;' => '&#237;',
'&icirc;' => '&#238;',
'&iuml;' => '&#239;',
'&eth;' => '&#240;',
'&ntilde;' => '&#241;',
'&ograve;' => '&#242;',
'&oacute;' => '&#243;',
'&ocirc;' => '&#244;',
'&otilde;' => '&#245;',
'&ouml;' => '&#246;',
'&divide;' => '&#247;',
'&oslash;' => '&#248;',
'&ugrave;' => '&#249;',
'&uacute;' => '&#250;',
'&ucirc;' => '&#251;',
'&uuml;' => '&#252;',
'&yacute;' => '&#253;',
'&thorn;' => '&#254;',
'&yuml;' => '&#255;',
'&OElig;' => '&#338;',
'&oelig;' => '&#339;',
'&Scaron;' => '&#352;',
'&scaron;' => '&#353;',
'&Yuml;' => '&#376;',
'&fnof;' => '&#402;',
'&circ;' => '&#710;',
'&tilde;' => '&#732;',
'&Alpha;' => '&#913;',
'&Beta;' => '&#914;',
'&Gamma;' => '&#915;',
'&Delta;' => '&#916;',
'&Epsilon;' => '&#917;',
'&Zeta;' => '&#918;',
'&Eta;' => '&#919;',
'&Theta;' => '&#920;',
'&Iota;' => '&#921;',
'&Kappa;' => '&#922;',
'&Lambda;' => '&#923;',
'&Mu;' => '&#924;',
'&Nu;' => '&#925;',
'&Xi;' => '&#926;',
'&Omicron;' => '&#927;',
'&Pi;' => '&#928;',
'&Rho;' => '&#929;',
'&Sigma;' => '&#931;',
'&Tau;' => '&#932;',
'&Upsilon;' => '&#933;',
'&Phi;' => '&#934;',
'&Chi;' => '&#935;',
'&Psi;' => '&#936;',
'&Omega;' => '&#937;',
'&alpha;' => '&#945;',
'&beta;' => '&#946;',
'&gamma;' => '&#947;',
'&delta;' => '&#948;',
'&epsilon;' => '&#949;',
'&zeta;' => '&#950;',
'&eta;' => '&#951;',
'&theta;' => '&#952;',
'&iota;' => '&#953;',
'&kappa;' => '&#954;',
'&lambda;' => '&#955;',
'&mu;' => '&#956;',
'&nu;' => '&#957;',
'&xi;' => '&#958;',
'&omicron;' => '&#959;',
'&pi;' => '&#960;',
'&rho;' => '&#961;',
'&sigmaf;' => '&#962;',
'&sigma;' => '&#963;',
'&tau;' => '&#964;',
'&upsilon;' => '&#965;',
'&phi;' => '&#966;',
'&chi;' => '&#967;',
'&psi;' => '&#968;',
'&omega;' => '&#969;',
'&thetasym;' => '&#977;',
'&upsih;' => '&#978;',
'&piv;' => '&#982;',
'&ensp;' => '&#8194;',
'&emsp;' => '&#8195;',
'&thinsp;' => '&#8201;',
'&zwnj;' => '&#8204;',
'&zwj;' => '&#8205;',
'&lrm;' => '&#8206;',
'&rlm;' => '&#8207;',
'&ndash;' => '&#8211;',
'&mdash;' => '&#8212;',
'&lsquo;' => '&#8216;',
'&rsquo;' => '&#8217;',
'&sbquo;' => '&#8218;',
'&ldquo;' => '&#8220;',
'&rdquo;' => '&#8221;',
'&bdquo;' => '&#8222;',
'&dagger;' => '&#8224;',
'&Dagger;' => '&#8225;',
'&bull;' => '&#8226;',
'&hellip;' => '&#8230;',
'&permil;' => '&#8240;',
'&prime;' => '&#8242;',
'&Prime;' => '&#8243;',
'&lsaquo;' => '&#8249;',
'&rsaquo;' => '&#8250;',
'&oline;' => '&#8254;',
'&frasl;' => '&#8260;',
'&euro;' => '&#8364;',
'&image;' => '&#8465;',
'&weierp;' => '&#8472;',
'&real;' => '&#8476;',
'&trade;' => '&#8482;',
'&alefsym;' => '&#8501;',
'&crarr;' => '&#8629;',
'&lArr;' => '&#8656;',
'&uArr;' => '&#8657;',
'&rArr;' => '&#8658;',
'&dArr;' => '&#8659;',
'&hArr;' => '&#8660;',
'&forall;' => '&#8704;',
'&part;' => '&#8706;',
'&exist;' => '&#8707;',
'&empty;' => '&#8709;',
'&nabla;' => '&#8711;',
'&isin;' => '&#8712;',
'&notin;' => '&#8713;',
'&ni;' => '&#8715;',
'&prod;' => '&#8719;',
'&sum;' => '&#8721;',
'&minus;' => '&#8722;',
'&lowast;' => '&#8727;',
'&radic;' => '&#8730;',
'&prop;' => '&#8733;',
'&infin;' => '&#8734;',
'&ang;' => '&#8736;',
'&and;' => '&#8743;',
'&or;' => '&#8744;',
'&cap;' => '&#8745;',
'&cup;' => '&#8746;',
'&int;' => '&#8747;',
'&there4;' => '&#8756;',
'&sim;' => '&#8764;',
'&cong;' => '&#8773;',
'&asymp;' => '&#8776;',
'&ne;' => '&#8800;',
'&equiv;' => '&#8801;',
'&le;' => '&#8804;',
'&ge;' => '&#8805;',
'&sub;' => '&#8834;',
'&sup;' => '&#8835;',
'&nsub;' => '&#8836;',
'&sube;' => '&#8838;',
'&supe;' => '&#8839;',
'&oplus;' => '&#8853;',
'&otimes;' => '&#8855;',
'&perp;' => '&#8869;',
'&sdot;' => '&#8901;',
'&lceil;' => '&#8968;',
'&rceil;' => '&#8969;',
'&lfloor;' => '&#8970;',
'&rfloor;' => '&#8971;',
'&lang;' => '&#9001;',
'&rang;' => '&#9002;',
'&larr;' => '&#8592;',
'&uarr;' => '&#8593;',
'&rarr;' => '&#8594;',
'&darr;' => '&#8595;',
'&harr;' => '&#8596;',
'&loz;' => '&#9674;',
'&spades;' => '&#9824;',
'&clubs;' => '&#9827;',
'&hearts;' => '&#9829;',
'&diams;' => '&#9830;'
);
return str_replace( array_keys($to_ncr), array_values($to_ncr), $text );
}
function wp_richedit_pre($text) {
// Filtering a blank results in an annoying <br />\n
if ( empty($text) ) return apply_filters('richedit_pre', '');
$output = $text;
$output = convert_chars($output);
$output = wpautop($output);
// These must be double-escaped or planets will collide.
$output = str_replace('&lt;', '&amp;lt;', $output);
$output = str_replace('&gt;', '&amp;gt;', $output);
return apply_filters('richedit_pre', $output);
}
function clean_url( $url ) {
if ('' == $url) return $url;
$url = preg_replace('|[^a-z0-9-~+_.?#=&;,/:%]|i', '', $url);
$strip = array('%0d', '%0a');
$url = str_replace($strip, '', $url);
$url = str_replace(';//', '://', $url);
$url = (!strstr($url, '://')) ? 'http://'.$url : $url;
$url = preg_replace('/&([^#])(?![a-z]{2,8};)/', '&#038;$1', $url);
return $url;
}
// Borrowed from the PHP Manual user notes. Convert entities, while
// preserving already-encoded entities:
function htmlentities2($myHTML) {
$translation_table=get_html_translation_table (HTML_ENTITIES,ENT_QUOTES);
$translation_table[chr(38)] = '&';
return preg_replace("/&(?![A-Za-z]{0,4}\w{2,3};|#[0-9]{2,3};)/","&amp;" , strtr($myHTML, $translation_table));
}
// Escape single quotes, specialchar double quotes, and fix line endings.
function js_escape($text) {
$text = wp_specialchars($text, 'double');
$text = str_replace('&#039;', "'", $text);
return preg_replace("/\r?\n/", "\\n", addslashes($text));
}
function wp_make_link_relative( $link ) {
return preg_replace('|https?://[^/]+(/.*)|i', '$1', $link );
}
?>
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