从DISCUZ中拿出来的UBBCODE函数

<?php
/*
从Discuz7.2中分离出来的UBBCODE函数
*/
function parseurl($url, $text) {
if(!$url && preg_match("/((https?|ftp|gopher|news|telnet|rtsp|mms|callto|bctp|ed2k|thunder|synacast){1}:\/\/|www\.)[^\[\"']+/i", trim($text), $matches)) {
$url = $matches[0];
$length = 65;
if(strlen($url) > $length) {
$text = substr($url, 0, intval($length * 0.5)).' ... '.substr($url, - intval($length * 0.3));
}
return '<a href="'.(substr(strtolower($url), 0, 4) == 'www.' ? 'http://'.$url : $url).'" target="_blank">'.$text.'</a>';
} else {
$url = substr($url, 1);
if(substr(strtolower($url), 0, 4) == 'www.') {
$url = 'http://'.$url;
}
return '<a href="'.$url.'" target="_blank">'.$text.'</a>';
}
}

function parseemail($email, $text) {
if(!$email && preg_match("/\s*([a-z0-9\-_.+]+)@([a-z0-9\-_]+[.][a-z0-9\-_.]+)\s*/i", $text, $matches)) {
$email = trim($matches[0]);
return '<a href="mailto:'.$email.'">'.$email.'</a>';
} else {
return '<a href="mailto:'.substr($email, 1).'">'.$text.'</a>';
}
}

function parsetrtd($bgcolor, $colspan, $rowspan, $width) {
return ($bgcolor == 'td' ? '</td>' : '<tr'.($bgcolor ? ' bgcolor="'.$bgcolor.'"' : '').'>').'<td'.($colspan > 1 ? ' colspan="'.$colspan.'"' : '').($rowspan > 1 ? ' rowspan="'.$rowspan.'"' : '').($width ? ' width="'.$width.'"' : '').'>';
}

function parsetable($width, $bgcolor, $message) {
if(!preg_match("/^\[tr(?:=([\(\)%,#\w]+))?\]\s*\[td(?:=(\d{1,2}),(\d{1,2})(?:,(\d{1,4}%?))?)?\]/", $message) && !preg_match("/^<tr[^>]*?>\s*<td[^>]*?>/", $message)) {
return str_replace('\\"', '"', preg_replace("/\[tr(?:=([\(\)%,#\w]+))?\]|\[td(?:=(\d{1,2}),(\d{1,2})(?:,(\d{1,4}%?))?)?\]|\[\/td\]|\[\/tr\]/", '', $message));
}
if(substr($width, -1) == '%') {
$width = substr($width, 0, -1) <= 98 ? intval($width).'%' : '98%';
} else {
$width = intval($width);
$width = $width ? ($width <= 560 ? $width.'px' : '98%') : '';
}
return '<table cellspacing="0" class="t_table" '.
($width == '' ? NULL : 'style="width:'.$width.'"').
($bgcolor ? ' bgcolor="'.$bgcolor.'">' : '>').
str_replace('\\"', '"', preg_replace(array(
"/\[tr(?:=([\(\)%,#\w]+))?\]\s*\[td(?:=(\d{1,2}),(\d{1,2})(?:,(\d{1,4}%?))?)?\]/ie",
"/\[\/td\]\s*\[td(?:=(\d{1,2}),(\d{1,2})(?:,(\d{1,4}%?))?)?\]/ie",
"/\[\/td\]\s*\[\/tr\]\s*/i"
), array(
"parsetrtd('\\1', '\\2', '\\3', '\\4')",
"parsetrtd('td', '\\1', '\\2', '\\3')",
'</td></tr>'
), $message)
).'</table>';
}

function bbcodeurl($url, $tags) {
if(!preg_match("/<.+?>/s", $url)) {
if(!in_array(strtolower(substr($url, 0, 6)), array('http:/', 'https:', 'ftp://', 'rtsp:/', 'mms://'))) {
$url = 'http://'.$url;
}
return str_replace(array('submit', 'logging.php'), array('', ''), sprintf($tags, $url, addslashes($url)));
} else {
return '&nbsp;'.$url;
}
}

function parseimg($width, $height, $src) {
return bbcodeurl($src, '<img'.($width > 0 ? " width=\"$width\"" : '').($height > 0 ? " height=\"$height\"" : '')." src=\"$src\" border=\"0\" alt=\"\" />");
}

function ubbcode($message){
$msglower = strtolower($message);
if(strpos($msglower, '[/url]') !== FALSE) {
$message = preg_replace("/\[url(=((https?|ftp|gopher|news|telnet|rtsp|mms|callto|bctp|ed2k|thunder|synacast){1}:\/\/|www\.|mailto:)([^\s\[\"']+?))?\](.+?)\[\/url\]/ies", "parseurl('\\1', '\\5')", $message);
}
if(strpos($msglower, '[/email]') !== FALSE) {
$message = preg_replace("/\[email(=([a-z0-9\-_.+]+)@([a-z0-9\-_]+[.][a-z0-9\-_.]+))?\](.+?)\[\/email\]/ies", "parseemail('\\1', '\\4')", $message);
}
$message = str_replace(array(
'[/color]', '[/size]', '[/font]', '[/align]', '', '', '[s]', '[/s]', '[hr]', '[/p]',
'[i=s]', '', '', '', '', '

', '[list=1]', '[list=a]',
'[list=A]', '
• ', '

', '[indent]', '[/indent]', '[/float]' ), array(
'</font>', '</font>', '</font>', '</p>', '<strong>', '</strong>', '<strike>', '</strike>', '<hr class="solidline" />', '</p>', '<i class="pstatus">', '<i>',
'</i>', '<u>', '</u>', '<ul>', '<ul type="1" class="litype_1">', '<ul type="a" class="litype_2">',
'<ul type="A" class="litype_3">', '<li>', '</ul>', '<blockquote>', '</blockquote>', '</span>'
), preg_replace(array(
"/\[color=([#\w]+?)\]/i",
"/\[size=(\d+?)\]/i",
"/\[size=(\d+(\.\d+)?(px|pt|in|cm|mm|pc|em|ex|%)+?)\]/i",
"/\[font=([^\[\<]+?)\]/i",
"/\[align=(left|center|right)\]/i",
"/\[p=(\d{1,2}), (\d{1,2}), (left|center|right)\]/i",
"/\[float=(left|right)\]/i"

), array(
"<font color=\"\\1\">",
"<font size=\"\\1\">",
"<font style=\"font-size: \\1\">",
"<font face=\"\\1 \">",
"<p align=\"\\1\">",
"<p style=\"line-height: \\1px; text-indent: \\2em; text-align: \\3;\">",
"<span style=\"float: \\1;\">"
), $message));
$nest = 0;
while(strpos($msglower, '[table') !== FALSE && strpos($msglower, '') !== FALSE){
$message = preg_replace("/\[table(?:=(\d{1,4}%?)(?:,([\(\)%,#\w ]+))?)?\]\s*(.+?)\s*\[\/table\]/ies", "parsetable('\\1', '\\2', '\\3')", $message);
if(++$nest > 4) break;
}

if(strpos($msglower, '[/img]') !== FALSE) {
$message = preg_replace(array(
"/\[img\]\s*([^\[\<\r\n]+?)\s*\[\/img\]/ies",
"/\[img=(\d{1,4})[x|\,](\d{1,4})\]\s*([^\[\<\r\n]+?)\s*\[\/img\]/ies"
), array(
"bbcodeurl('\\1', '<img src=\"%s\" onload=\"thumbImg(this)\" alt=\"\" />')",
"parseimg('\\1', '\\2', '\\3')"
), $message);
}

unset($msglower);
return $message;
}
?>