Added gettext - filter for smarty

Signed-off-by: Florian Aders (EleRas) <eleras@froxlor.org>

lib/functions/smarty_plugins/gettext-prefilter.php

@@ -0,0 +1,117 @@
+<?php
+/*
+ Projectname:	Smarty gettext Prefilter
+ Description:	A prefilter for smarty that will filter for {t}....{/t} blocks
+		To use simply include this file after declaring the $smarty object
+		or register the filter normally using a similar command as shown below
+
+		The function expects a HAVE_GETTEXT define set to true to actually do any
+		work with gettext.
+
+		{t} supports 3 variables:
+			domain - To change the gettext domain to use from the default one
+			plural - To mark a block as having a plural and normal form.
+				 Set plural to the plural version of the block, eg:
+				 {t count=$files|@count plural="{$files} files"}One file{/t}
+			escape - Escape the resulting string for either:
+				 js (JavaScript), html (HTML entities), url (URL Encode)
+				 Defaults to no escaping at all.
+
+		This work is licensed under the Creative Commons Attribution 2.5 License.
+		To view a copy of this license, visit http://creativecommons.org/licenses/by/2.5/
+		or send a letter to Creative Commons, 543 Howard Street, 5th Floor, San Francisco,
+		California, 94105, USA.
+
+ 		This file is distributed in the hope that it will be useful, but WITHOUT
+ 		ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
+ 		FITNESS FOR A PARTICULAR PURPOSE.
+*/
+
+	$smarty->registerFilter('pre', 'smarty_prefilter_t');
+	function smarty_prefilter_t($tpl_source, &$smarty) {
+		/* find all {t} ... {/t} uses regex */
+		$tpl_source = preg_replace_callback(
+				'|{t([^}]*)}(.*?){/t}|s',
+				'smarty_helper_gettext_block',
+				$tpl_source
+		);
+
+		/* return our new tpl_source */
+		return $tpl_source;
+	}
+	function smarty_helper_gettext_block($matches)
+	{
+		/* the actual text is the 2nd submatch */
+		$text = stripslashes($matches[2]);
+
+		/* if we do not have gettext, just return the text itself */
+		if (!HAVE_GETTEXT) return $text;
+
+		/* build our params via the 1st submatch */
+		$params = Array();
+		if(!isset($param_matches))
+		{
+			$param_matches = '';
+		}
+		$num = preg_match_all(
+			"|(\\w+)=([\"'])([^\\2]*)\\2|",
+			$param_matches,
+			$matches[2]
+		);
+		if ($num) foreach($param_matches AS $param) $params[$param[1]] = $param[3];
+
+		// set domain if needed
+		if (isset($params['domain']))
+		{
+			$domain = $params['domain'];
+			unset($params['domain']);
+		}
+
+		// set escape mode
+		if (isset($params['escape'])) {
+			$escape = $params['escape'];
+			unset($params['escape']);
+		}
+
+		// set plural version
+		if (isset($params['plural'])) {
+			$plural = $params['plural'];
+			unset($params['plural']);
+
+			// set count
+			if (isset($params['count'])) {
+				$count = $params['count'];
+				unset($params['count']);
+			}
+		}
+
+		// use plural if required parameters are set
+		if (isset($count) && isset($plural))
+		{
+			$text = isset($domain) ? dngettext($domain, $text, $plural, $count) : ngettext($text, $plural, $count);
+		}
+		else
+		{ // use normal
+			$text = isset($domain) ? dgettext($domain, $text) : gettext($text);
+		}
+
+		// default to noescaping at all
+		if (isset($escape)) {
+			switch ($escape) {
+				case 'javascript':
+				case 'js':
+					// javascript escape
+					$text = str_replace('\'', '\\\'', stripslashes($text));
+					break;
+				case 'url':
+					// url escape
+					$text = urlencode($text);
+					break;
+				case 'html':
+					$text = nl2br(htmlspecialchars($text));
+			}
+		}
+
+		return $text;
+	}
+?>