--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/artifacts/contrib/add-i18n-numbers.py	Thu Apr 25 15:23:37 2013 +0200
@@ -0,0 +1,118 @@
+#!/usr/bin/env python
+
+""" Add unique numbers in front of properties values
+    to identfy the key without knowing the real key.
+"""
+
+import sys
+import re
+import os
+
+BLACK_LISTED_KEYS = [
+    re.compile(r".*\.file$")
+]
+
+BLACK_LISTED_VALUES = [
+    re.compile(r"^http.*$")
+]
+
+NUMBERED  = re.compile(r"^\s*([^\s]+)\s*=\s*\[([0-9a-zA-Z]+)\]\s*(.+)$")
+UNUMBERED = re.compile(r"^\s*([^\s]+)\s*=\s*(.+)$")
+
+ALPHA = "0123456789" \
+        "abcdefghijklmnopqrstuvwxyz" \
+        "ABCDEFGHIJKLMNOPQRSTUVWXYZ"
+
+def decode_ibase62(s):
+    t, c = 0, 1
+    for x in s[::-1]:
+        i = ALPHA.find(x)
+        t += i*c
+        c *= len(ALPHA)
+    return t
+
+def ibase62(i):
+    if i == 0:
+        return "0"
+    out = []
+    if i < 0:
+        out.append("-")
+        i = -1
+    while i > 0:
+        out.append(ALPHA[i % len(ALPHA)])
+        i //= len(ALPHA)
+    out.reverse()
+    return ''.join(out)
+
+def is_blacklisted(key, value):
+
+    for bl in BLACK_LISTED_KEYS:
+        if bl.match(key):
+            return True
+
+    for bl in BLACK_LISTED_VALUES:
+        if bl.match(value):
+            return True
+
+    return False
+
+def find_key(already_numbered, value):
+    for k, v in already_numbered.iteritems():
+        if v == value:
+            return k
+    return None
+
+def decorated_content(infile, outfile, already_numbered):
+
+    for line in infile:
+        line = line.strip()
+        m = NUMBERED.match(line)
+        if m:
+            key, num, value = m.groups()
+            decoded_num = decode_ibase62(num)
+            last = find_key(already_numbered, decoded_num)
+            if last is None:
+                already_numbered[key] = decoded_num
+            elif last != key:
+                print >> sys.stderr,  "WARN: Number clash: " \
+                    "%s leeds to '%s' and '%s'" % (num, key, last)
+            print >> outfile, line
+            continue
+
+        m = UNUMBERED.match(line)
+        if m:
+            key, value = m.groups(1)
+            if is_blacklisted(key, value):
+                print >> outfile, line
+            else:
+                num = already_numbered.setdefault(key, len(already_numbered))
+                print >> outfile, "%s=[%s] %s" % (key, ibase62(num), m.group(2))
+            continue
+        print >> outfile, line
+
+def tmp_fname(fname):
+    name = fname + ".tmp"
+    i = 0
+    while os.path.exists(name):
+        name = "%s.tmp%d" % (fname, i)
+        i += 1
+    return name
+
+def decorate_file(fname, already_numbered):
+
+    tmp = tmp_fname(fname)
+
+    with open(fname, "r") as infile:
+        with open(tmp, "w") as outfile:
+            decorated_content(infile, outfile, already_numbered)
+
+    os.rename(tmp, fname)
+
+def main():
+    already_numbered = {}
+    for fname in sys.argv[1:]:
+        print >> sys.stderr, "checking %s" % fname
+        decorate_file(fname, already_numbered)
+
+if __name__ == "__main__":
+    main()