encoding subroutines

diff --git a/include/encoding.inc.php b/include/encoding.inc.php
new file mode 100644 (file)
index 0000000..d9a0eae
--- /dev/null
+++ b/include/encoding.inc.php
@@ -0,0 +1,43 @@
+<?php
+/********************************************************************************
+* include/encoding.inc.php : decoding subroutines
+* --------------------------
+*
+* This file is part of the banana distribution
+* Copyright: See COPYING files that comes with this distribution
+********************************************************************************/
+
+/** Decodes quoted-printable and UTF8 headers
+ * @param STRING $_value string to decode
+ */
+
+function headerDecode($_value) {
+  if (eregi('=\?.*\?.\?.*\?=',$_value)) { // is there anything encoded ?
+    if (eregi('=\?(.*)\?Q\?.*\?=',$_value,$charset)) {  // quoted-printable decoding
+      $result1=eregi_replace('(.*)=\?.*\?Q\?(.*)\?=(.*)','\1',$_value);
+      $result2=eregi_replace('(.*)=\?.*\?Q\?(.*)\?=(.*)','\2',$_value);
+      $result3=eregi_replace('(.*)=\?.*\?Q\?(.*)\?=(.*)','\3',$_value);
+      $result2=str_replace("_"," ",quoted_printable_decode($result2));
+      if ($charset[1] == "UTF-8") 
+        $result2 = utf8_decode($result2);
+      $newvalue=$result1.$result2.$result3;
+    }
+    if (eregi('=\?(.*)\?B\?.*\?=',$_value,$charset)) {  // base64 decoding
+      $result1=eregi_replace('(.*)=\?.*\?B\?(.*)\?=(.*)','\1',$_value);
+      $result2=eregi_replace('(.*)=\?.*\?B\?(.*)\?=(.*)','\2',$_value);
+      $result3=eregi_replace('(.*)=\?.*\?B\?(.*)\?=(.*)','\3',$_value);
+      $result2=base64_decode($result2);
+      if ($charset[1] == "UTF-8") 
+        $result2 = utf8_decode($result2);
+      $newvalue=$result1.$result2.$result3;
+    }
+    if (!isset($newvalue)) // nothing of the above, must be an unknown encoding...
+      $newvalue=$_value;
+    else
+      $newvalue=headerDecode($newvalue);  // maybe there are more encoded
+    return($newvalue);                    // parts
+  } else {   // there wasn't anything encoded, return the original string
+    return($_value);
+  }
+}
+?>