diff --git a/include/class.format.php b/include/class.format.php
index 4a5a3883f6a17f42f309803d1b8fb50f3bf9b6b0..407c9916b55cba4d31d2e73630318fe3ae77ee4b 100644
--- a/include/class.format.php
+++ b/include/class.format.php
@@ -115,11 +115,79 @@ class Format {
return $len ? wordwrap($text, $len, "\n", true) : $text;
}
- function html($html, $config=array('balance'=>1)) {
+ function html_balance($html, $remove_empty=true) {
+ if (!extension_loaded('dom'))
+ return $html;
+
+ if (!trim($html))
+ return $html;
+
+ $doc = new DomDocument();
+ $xhtml = '<?xml encoding="utf-8"><meta http-equiv="Content-Type" content="text/html; charset=utf-8"/>'
+ // Wrap the content in a <div> because libxml would use a <p>
+ . "<div>$html</div>";
+ $doc->encoding = 'utf-8';
+ $doc->preserveWhitespace = false;
+ $doc->recover = true;
+ if (false === @$doc->loadHTML($xhtml))
+ return $html;
+
+ if ($remove_empty) {
+ // Remove empty nodes
+ $xpath = new DOMXPath($doc);
+ static $eE = array('area'=>1, 'br'=>1, 'col'=>1, 'embed'=>1,
+ 'hr'=>1, 'img'=>1, 'input'=>1, 'isindex'=>1, 'param'=>1);
+ do {
+ $done = true;
+ $nodes = $xpath->query('//*[not(text()) and not(node())]');
+ foreach ($nodes as $n) {
+ if (isset($eE[$n->nodeName]))
+ continue;
+ $n->parentNode->removeChild($n);
+ $done = false;
+ }
+ } while (!$done);
+ }
+
+ static $phpversion;
+ if (!isset($phpversion))
+ $phpversion = phpversion();
+
+ $body = $doc->getElementsByTagName('body');
+ if (!$body->length)
+ return $html;
+
+ if ($phpversion > '5.3.6') {
+ $html = $doc->saveHTML($doc->getElementsByTagName('body')->item(0)->firstChild);
+ }
+ else {
+ $html = $doc->saveHTML();
+ $html = preg_replace('`^<!DOCTYPE.+?>|<\?xml .+?>|</?html>|</?body>|</?head>|<meta .+?/?>`', '', $html); # <?php
+ }
+ return preg_replace('`^<div>|</div>$`', '', $html);
+ }
+
+ function html($html, $config=array()) {
require_once(INCLUDE_DIR.'htmLawed.php');
$spec = false;
if (isset($config['spec']))
$spec = $config['spec'];
+
+ // Add in htmLawed defaults
+ $config += array(
+ 'balance' => 1,
+ );
+
+ // Attempt to balance using libxml. htmLawed will corrupt HTML with
+ // balancing to fix improper HTML at the same time. For instance,
+ // some email clients may wrap block elements inside inline
+ // elements. htmLawed will change such block elements to inlines to
+ // make the HTML correct.
+ if ($config['balance'] && extension_loaded('dom')) {
+ $html = self::html_balance($html);
+ $config['balance'] = 0;
+ }
+
return htmLawed($html, $config, $spec);
}
@@ -200,7 +268,7 @@ class Format {
}
}
- function safe_html($html) {
+ function safe_html($html, $balance=1) {
// Remove HEAD and STYLE sections
$html = preg_replace(
array(':<(head|style|script).+?</\1>:is', # <head> and <style> sections
@@ -212,7 +280,7 @@ class Format {
$html);
$config = array(
'safe' => 1, //Exclude applet, embed, iframe, object and script tags.
- 'balance' => 0, // No balance — corrupts poorly formatted Outlook html
+ 'balance' => $balance,
'comment' => 1, //Remove html comments (OUTLOOK LOVE THEM)
'tidy' => -1,
'deny_attribute' => 'id',
@@ -295,6 +363,7 @@ class Format {
$text);
//make urls clickable.
+ $text = self::html_balance($text, false);
$text = Format::clickableurls($text);
if ($inline_images)
@@ -366,6 +435,7 @@ class Format {
},
'schemes' => 'href: aim, feed, file, ftp, gopher, http, https, irc, mailto, news, nntp, sftp, ssh, telnet; *:file, http, https; src: cid, http, https, data',
'elements' => '*+iframe',
+ 'balance' => 0,
'spec' => 'span=data-src,width,height',
);
return Format::html($text, $config);