From c9b9a9c78db9aa9bf62d5924d6739519945f209c Mon Sep 17 00:00:00 2001
From: brettp <brettp@36083f99-b078-4883-b0ff-0f9b5a30f544>
Date: Thu, 12 Nov 2009 04:01:52 +0000
Subject: Wrapped all multibyte functions that are directly interchangable with
 non mb functions with elgg_*().

git-svn-id: http://code.elgg.org/elgg/trunk@3670 36083f99-b078-4883-b0ff-0f9b5a30f544
---
 engine/lib/mb_wrapper.php | 85 +++++++++++++++++++----------------------------
 1 file changed, 34 insertions(+), 51 deletions(-)

(limited to 'engine/lib/mb_wrapper.php')

diff --git a/engine/lib/mb_wrapper.php b/engine/lib/mb_wrapper.php
index 2cef15c64..7d49da315 100644
--- a/engine/lib/mb_wrapper.php
+++ b/engine/lib/mb_wrapper.php
@@ -1,61 +1,44 @@
 <?php
-/**
- * Elgg wrapper functions for multibyte string support.
- *
- * @package Elgg
- * @subpackage Core
- * @author Curverider Ltd
- * @link http://elgg.org/
- */
 
-/**
- * Wrapper function: Returns the result of mb_strtolower if mb_support is present, else the
- * result of strtolower is returned.
- *
- * @param string $string The string.
- * @param string $charset The charset (if multibyte support is present) : default 'UTF8'
- * @return string
- */
-function elgg_strtolower($string, $charset = 'UTF8') {
-	if (is_callable('mb_strtolower')) {
-		return mb_strtolower($string, $charset);
-	}
-
-	return strtolower($string);
+// if mb functions are available, set internal encoding to UTF8
+if (is_callable('mb_internal_encoding')) {
+	mb_internal_encoding("UTF-8");
 }
 
-/**
- * Wrapper function: Returns the result of mb_strtoupper if mb_support is present, else the
- * result of strtoupper is returned.
- *
- * @param string $string The string.
- * @param string $charset The charset (if multibyte support is present) : default 'UTF8'
- * @return string
- */
-function elgg_strtoupper($string, $charset = 'UTF8') {
-	if (is_callable('mb_strtoupper')) {
-		return mb_strtoupper($string, $charset);
-	}
+// map string functions to their mb_str_func alternatives
+// and wrap them in elgg_str_fun()
 
-	return strtoupper($string);
-}
+// list of non-mb safe string functions to wrap in elgg_*()
+// only will work with mb_* functions that take the same
+// params in the same order as their non-mb safe counterparts.
+$str_funcs = array(
+	'parse_str',
+	'split',
+	'stristr',
+	'strlen',
+	'strpos',
+	'strrchr',
+	'strripos',
+	'strrpos',
+	'strstr',
+	'strtolower',
+	'strtoupper',
+	'substr_count',
+	'substr'
+);
 
-/**
- * Wrapper function: Returns the result of mb_substr if mb_support is present, else the
- * result of substr is returned.
- *
- * @param string $string The string.
- * @param int $start Start position.
- * @param int $length Length.
- * @param string $charset The charset (if multibyte support is present) : default 'UTF8'
- * @return string
- */
-function elgg_substr($string, $start = 0, $length = null, $charset = 'UTF8') {
-	if (is_callable('mb_substr')) {
-		return mb_substr($string, $start, $length, $charset);
+$eval_statement = '';
+foreach ($str_funcs as $func) {
+	// create wrapper function passing in the same args as given
+	$eval_statement .= "
+	function elgg_$func() {
+		\$args = func_get_args();
+		if (is_callable('$mb_func')) {
+			return call_user_func_array('$mb_func', \$args);
+		}
+		return call_user_func_array('$func', \$args);
 	}
-
-	return substr($string, $start, $length);
+";
 }
 
 // TODO: Other wrapper functions
\ No newline at end of file
-- 
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