From 5a1f0701a31600881de1a346d920d60900286008 Mon Sep 17 00:00:00 2001
From: josch <j.schauer@email.de>
Date: Fri, 13 Mar 2015 13:05:23 +0100
Subject: [PATCH] to allow non-ascii characters, encode strings as utf-16-be
 (big endian) and escape backslashes and parenthesis

---
 CHANGES.rst    |  1 +
 src/img2pdf.py | 10 +++++++++-
 2 files changed, 10 insertions(+), 1 deletion(-)

diff --git a/CHANGES.rst b/CHANGES.rst
index 29dc9cb..9884655 100644
--- a/CHANGES.rst
+++ b/CHANGES.rst
@@ -7,6 +7,7 @@ CHANGES
 
  - replace -x and -y option by combined option -s (or --pagesize) and use -S
    for --subject
+ - correctly encode and escape non-ascii metadata
 
 0.1.5
 -----
diff --git a/src/img2pdf.py b/src/img2pdf.py
index 91348af..8b7a1fb 100755
--- a/src/img2pdf.py
+++ b/src/img2pdf.py
@@ -518,7 +518,15 @@ def valid_size(string):
 # is both, type str and type bytes (only the case in python2)
 def pdf_embedded_string(string):
     if type(string) is str and type(string) is not bytes:
-        string = string.encode("utf8")
+        # py3
+        pass
+    else:
+        # py2
+        string = string.decode("utf8")
+    string = b"\xfe\xff"+string.encode("utf-16-be")
+    string = string.replace(b'\\', b'\\\\')
+    string = string.replace(b'(', b'\\(')
+    string = string.replace(b')', b'\\)')
     return string
 
 parser = argparse.ArgumentParser(