# HG changeset patch
# User wolfgang.scherer@gmx.de
# Date 2012-03-30 18:20:52
# Node ID fad285782be80dfff3dc150027b9472560efa1bb
# Parent  80ff2ac9be1c2f0fe9fc51c690978bfc71c5eca4

lib/util.php: poor man's quoted_printable_encode for PHP < 5.30.

diff --git a/lib/util.php b/lib/util.php
--- a/lib/util.php
+++ b/lib/util.php
@@ -248,6 +248,37 @@ function error_msg($message)
 // |||:sec:||| vaccation(1) message
 // --------------------------------------------------
 
+if (!function_exists("quoted_printable_encode")) {
+    // only available with PHP >= 5.3.0
+    if (function_exists("imap_8bit")) {
+        function quoted_printable_encode($string) {
+            return imap_8bit($string);
+        }
+    } else {
+        /**
+         * Process a string to fit the requirements of RFC2045 section 6.7. Note that
+         * this works, but replaces more characters than the minimum set. For readability
+         * the spaces and CRLF pairs aren't encoded though.
+         */
+        function quoted_printable_encode($string) {
+            $string = str_replace(array('%20', '%0D%0A', '%'), array(' ', "\r\n", '='), rawurlencode($string));
+            $string = preg_replace('/[^\r\n]{73}[^=\r\n]{2}/', "$0=\r\n", $string);
+            return $string;
+        }
+    }
+}
+
+// there should be no need ... quoted_printable_decode is around since PHP4
+if (!function_exists("quoted_printable_decode")) {
+    if (function_exists("imap_qprint")) {
+        echo "imap_qprint";
+        function quoted_printable_decode($string) {
+            return imap_qprint($string);
+        }
+    } else {
+    }
+}
+
 function vacation_split($message, $decode)
 {
     $lines = explode("\n", $message);