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Bugtracker #3972 - strip empty HTML tags in wordwrap

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e107steved
2007-12-30 09:49:46 +00:00
parent ac7f0ddf36
commit 47c6faff35
1 changed files with 106 additions and 54 deletions
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160
e107_handlers/e_parse_class.php
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@@ -11,8 +11,8 @@
| GNU General Public License (http://gnu.org).
|
| $Source: /cvs_backup/e107_0.8/e107_handlers/e_parse_class.php,v $
| $Revision: 1.23 $
| $Date: 2007-12-07 21:24:55 $
| $Revision: 1.24 $
| $Date: 2007-12-30 09:49:46 $
| $Author: e107steved $
+----------------------------------------------------------------------------+
*/
@@ -204,73 +204,125 @@ class e_parse
}
function htmlwrap($str, $width, $break = "\n", $nobreak = "", $nobr = "pre", $utf = false)
{
/*
* htmlwrap() function - v1.1
* Parts of code from htmlwrap() function - v1.6
* Copyright (c) 2004 Brian Huisman AKA GreyWyvern
* http://www.greywyvern.com/code/php/htmlwrap_1.1.php.txt
*
* This program may be distributed under the terms of the GPL
* - http://www.gnu.org/licenses/gpl.txt
*
* Other mods by steved
*/
$content = preg_split("/([<>])/", $str, -1, PREG_SPLIT_DELIM_CAPTURE | PREG_SPLIT_NO_EMPTY);
$nobreak = explode(" ", $nobreak);
$nobr = explode(" ", $nobr);
$intag = false;
$innbk = array();
$innbr = array();
$drain = "";
$utf = ($utf || CHARSET == 'utf-8') ? "u" : "";
$lbrks = "/?!%)-}]\\\"':;";
if ($break == "\r")
// Transform protected element lists into arrays
$nobreak = explode(" ", strtolower($nobreak));
// Variable setup
$intag = false;
$innbk = array();
$drain = "";
// List of characters it is "safe" to insert line-breaks at
// It is not necessary to add < and > as they are automatically implied
$lbrks = "/?!%)-}]\\\"':;&";
// Is $str a UTF8 string?
$utf8 = ($utf || CHARSET == 'utf-8') ? "u" : "";
// Start of the serious stuff - split into HTML tags and text between
$content = preg_split('#(<.*?>)#mis', $str, -1, PREG_SPLIT_NO_EMPTY | PREG_SPLIT_DELIM_CAPTURE );
foreach($content as $value)
{
if ($value[0] == "<")
{ // We are within an HTML tag
// Create a lowercase copy of this tag's contents
$lvalue = strtolower(substr($value,1,-1));
if ($lvalue)
{ // Tag of non-zero length
// If the first character is not a / then this is an opening tag
if ($lvalue[0] != "/")
{ // Collect the tag name
preg_match("/^(\w*?)(\s|$)/", $lvalue, $t);
// If this is a protected element, activate the associated protection flag
if (in_array($t[1], $nobreak)) array_unshift($innbk, $t[1]);
}
else
{ // Otherwise this is a closing tag
// If this is a closing tag for a protected element, unset the flag
if (in_array(substr($lvalue, 1), $nobreak))
{
reset($innbk);
while (list($key, $tag) = each($innbk))
{
if (substr($lvalue, 1) == $tag)
{
unset($innbk[$key]);
break;
}
}
$innbk = array_values($innbk);
}
}
}
else
{
$value = ''; // Eliminate any empty tags altogether
}
// Else if we're outside any tags, and with non-zero length string...
}
elseif ($value)
{
$break = "\n";
}
while (list(, $value) = each($content))
{
switch ($value)
// If unprotected...
if (!count($innbk))
{
// Use the ACK (006) ASCII symbol to replace all HTML entities temporarily
$value = str_replace("\x06", "", $value);
preg_match_all("/&([a-z\d]{2,7}|#\d{2,5});/i", $value, $ents);
$value = preg_replace("/&([a-z\d]{2,7}|#\d{2,5});/i", "\x06", $value);
// Enter the line-break loop
do
{
case "<": $intag = true; break;
case ">": $intag = false; break;
default:
if ($intag)
$store = $value;
// Find the first stretch of characters over the $width limit
if (preg_match("/^(.*?\s)?(\S{".$width."})(?!(".preg_quote($break, "/")."|\s))(.*)$/s".(($utf8) ? "u" : ""), $value, $match))
{
if (strlen($match[2]))
{
if ($value{0} != "/")
{
preg_match('/^(.*?)(\s|$)/'.$utf, $value, $t);
if ((!count($innbk) && in_array($t[1], $nobreak)) || in_array($t[1], $innbk)) $innbk[] = $t[1];
if ((!count($innbr) && in_array($t[1], $nobr)) || in_array($t[1], $innbr)) $innbr[] = $t[1];
} else {
if (in_array(substr($value, 1), $innbk)) unset($innbk[count($innbk)]);
if (in_array(substr($value, 1), $innbr)) unset($innbr[count($innbr)]);
}
} else if ($value)
{
if (!count($innbr)) $value = str_replace("\n", "\r", str_replace("\r", "", $value));
if (!count($innbk))
{
do
{
$store = $value;
if (preg_match("/^(.*?\s|^)(([^\s&]|&(\w{2,5}|#\d{2,4});){".$width."})(?!(".preg_quote($break, "/").'|\s))(.*)$/s'.$utf, $value, $match))
{
for ($x = 0, $ledge = 0; $x < strlen($lbrks); $x++) $ledge = max($ledge, strrpos($match[2], $lbrks{$x}));
if (!$ledge) $ledge = strlen($match[2]) - 1;
$value = $match[1].substr($match[2], 0, $ledge + 1).$break.substr($match[2], $ledge + 1).$match[6];
}
}
while ($store != $value);
}
if (!count($innbr)) $value = str_replace("\r", E_NL, $value);
}
}
$drain .= $value;
}
return $drain;
// Determine the last "safe line-break" character within this match
for ($x = 0, $ledge = 0; $x < strlen($lbrks); $x++) $ledge = max($ledge, strrpos($match[2], $lbrks{$x}));
if (!$ledge) $ledge = strlen($match[2]) - 1;
// Insert the modified string
$value = $match[1].substr($match[2], 0, $ledge + 1).$break.substr($match[2], $ledge + 1).$match[4];
}
}
// Loop while overlimit strings are still being found
} while ($store != $value);
// Put captured HTML entities back into the string
foreach ($ents[0] as $ent) $value = preg_replace("/\x06/", $ent, $value, 1);
}
}
// Send the modified segment down the drain
$drain .= $value;
}
// Return contents of the drain
return $drain;
}
function html_truncate ($text, $len = 200, $more = "[more]")
{
$pos = 0;