smarty/plugins/modifier.truncate.php
author Dan
Mon, 01 Sep 2008 16:50:03 -0400
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<?php
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/**
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 * Smarty plugin
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 * @package Smarty
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 * @subpackage plugins
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 */
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/**
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 * Smarty truncate modifier plugin
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 *
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 * Type:     modifier<br>
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 * Name:     truncate<br>
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 * Purpose:  Truncate a string to a certain length if necessary,
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 *           optionally splitting in the middle of a word, and
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 *           appending the $etc string or inserting $etc into the middle.
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 * @link http://smarty.php.net/manual/en/language.modifier.truncate.php
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 *          truncate (Smarty online manual)
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 * @author   Monte Ohrt <monte at ohrt dot com>
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 * @param string
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 * @param integer
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 * @param string
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 * @param boolean
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 * @param boolean
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 * @return string
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 */
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function smarty_modifier_truncate($string, $length = 80, $etc = '...',
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                                  $break_words = false, $middle = false)
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{
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    if ($length == 0)
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        return '';
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    if (strlen($string) > $length) {
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        $length -= min($length, strlen($etc));
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        if (!$break_words && !$middle) {
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            $string = preg_replace('/\s+?(\S+)?$/', '', substr($string, 0, $length+1));
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        }
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        if(!$middle) {
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            return substr($string, 0, $length) . $etc;
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        } else {
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            return substr($string, 0, $length/2) . $etc . substr($string, -$length/2);
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        }
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    } else {
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        return $string;
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    }
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}
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/* vim: set expandtab: */
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?>