From ced34cb15e095836767971aa4d27b141fb1d7ec9 Mon Sep 17 00:00:00 2001
From: Aleksander Machniak <alec@alec.pl>
Date: Sat, 18 Oct 2014 08:47:54 -0400
Subject: [PATCH] Merge pull request #230 from bytesatwork-xx/master

---
 program/lib/Roundcube/rcube_charset.php |   37 ++++++++++++-------------------------
 1 files changed, 12 insertions(+), 25 deletions(-)

diff --git a/program/lib/Roundcube/rcube_charset.php b/program/lib/Roundcube/rcube_charset.php
index 8612e7f..d6ca3c0 100644
--- a/program/lib/Roundcube/rcube_charset.php
+++ b/program/lib/Roundcube/rcube_charset.php
@@ -273,17 +273,8 @@
             else if ($from == 'ISO-8859-1' && function_exists('utf8_encode')) {
                 return utf8_encode($str);
             }
-            else if (class_exists('utf8')) {
-                if (!$conv) {
-                    $conv = new utf8($from);
-                }
-                else {
-                    $conv->loadCharset($from);
-                }
-
-                if ($_str = $conv->strToUtf8($str)) {
-                    return $_str;
-                }
+            else  {
+                user_error("No suitable function found for UTF-8 encoding", E_USER_WARNING);
             }
         }
 
@@ -298,17 +289,8 @@
             else if ($to == 'ISO-8859-1' && function_exists('utf8_decode')) {
                 return utf8_decode($str);
             }
-            else if (class_exists('utf8')) {
-                if (!$conv) {
-                    $conv = new utf8($to);
-                }
-                else {
-                    $conv->loadCharset($from);
-                }
-
-                if ($_str = $conv->strToUtf8($str)) {
-                    return $_str;
-                }
+            else {
+                user_error("No suitable function found for UTF-8 decoding", E_USER_WARNING);
             }
         }
 
@@ -759,7 +741,12 @@
 
         // iconv/mbstring are much faster (especially with long strings)
         if (function_exists('mb_convert_encoding')) {
-            if (($res = mb_convert_encoding($input, 'UTF-8', 'UTF-8')) !== false) {
+            $msch = mb_substitute_character('none');
+            mb_substitute_character('none');
+            $res = mb_convert_encoding($input, 'UTF-8', 'UTF-8');
+            mb_substitute_character($msch);
+
+            if ($res !== false) {
                 return $res;
             }
         }
@@ -795,8 +782,8 @@
                 }
                 $seq = '';
                 $out .= $chr;
-            // first (or second) byte of multibyte sequence
             }
+            // first (or second) byte of multibyte sequence
             else if ($ord >= 0xC0) {
                 if (strlen($seq) > 1) {
                     $out .= preg_match($regexp, $seq) ? $seq : '';
@@ -806,8 +793,8 @@
                     $seq = '';
                 }
                 $seq .= $chr;
-            // next byte of multibyte sequence
             }
+            // next byte of multibyte sequence
             else if ($seq) {
                 $seq .= $chr;
             }

--
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