Smarty Plugin html_subtr

[Mich-adg]

Hi,

don't know if there's is already a plugin in the smarty folder (looked quickly but didn't find), but i was looking for a way to truncate text without using strip_tags (wich erase html formatting), i found this (old) plugin wich works perfect, a good idea to add it by default (?):

Code: Select all

<?php
/*
* Smarty plugin
*
-------------------------------------------------------------
* File: modifier.html_substr.php
* Type: modifier
* Name: html_substr
* Version: 1.0
* Date: June 19th, 2003
* Purpose: Cut a string preserving any tag nesting and matching.
* Install: Drop into the plugin directory.
* Author: Original Javascript Code: Benjamin Lupu <lupufr@aol.com>
* Translation to PHP & Smarty: Edward Dale <scompt@scompt.com>
*
-------------------------------------------------------------
*/
function smarty_modifier_html_substr($string, $length, $etc = '...')
{
        if(!empty($string) and $length > 0) {
                $isText = true;
                $ret = "";
                $i = 0;

                $currentChar = "";
                $lastSpacePosition = -1;
                $lastChar = "";

                $tagsArray = array();
                $currentTag = "";
                $tagLevel = 0;

                $noTagLength = strlen(strip_tags($string));

                $stringlen = strlen($string);
                // Parser loop
                for ($j = 0; $j < $stringlen; $j++) {

                        $currentChar = $string[$j];
                        $ret .= $currentChar;

                        // Lesser than event
                        if ($currentChar == "<") $isText = false;

                        // Character handler
                        if ($isText) {
                                // Memorize last space position
                                if($currentChar == " ") {
                                        $lastSpacePosition = $j;
                                }
                                else {
                                        $lastChar = $currentChar;
                                }
                                $i++;
                        } else {
                                $currentTag .= $currentChar;
                        }

                        // Greater than event
                        if($currentChar == ">") {
                                $isText = true;

                                // Opening tag handler
                                if ((strpos($currentTag, "<" ) !== false) and
                                        (strpos($currentTag, "/>" ) === false) and
                                        (strpos($currentTag, "</") === false)) {

                                        if (strpos($currentTag, " ") !== false) {
                                                // Tag has attribute(s)
                                                // "<tag alt=something" to "tag"
                                                $currentTag = substr($currentTag, 1, strpos($currentTag, " ") - 1);
                                        } else {
                                                // Tag doesn't have attribute(s)
                                                // "<tag" to "tag"
                                                $currentTag = substr($currentTag, 1, -1);
                                        }

                                        // Save tag as opened
                                        array_push($tagsArray, $currentTag);

                                        $lastSpacePosition = -1;
                                } else if (strpos($currentTag, "</") !== false) {
                                        // Closing tag so unpop it from the opened tags array
                                        array_pop($tagsArray);
                                }

                                $currentTag = "";
                        }
                        if ($i >= $length) {
                                break;
                        }
                }

                // Cut HTML string at last space position
                if ($length < $noTagLength) {
                        if ($lastSpacePosition != -1) {
                                $ret = substr($string, 0, $lastSpacePosition);
                        }
                        else {
                                $ret = substr($string, 0, $j);
                        }
                        $ret .= $etc;
                }

                // Close broken XHTML elements
                while (($aTag = array_pop($tagsArray)) !== null) {
                        $ret .= "</" . $aTag . ">\n";
                }

        } else {
                $ret = "";
        }

        return $ret;
}

?>

Usage :
{eval var=$entry->summary|html_substr:300:' ...'}