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#!/usr/bin/env python
# -*- coding: utf-8 -*-

import errno, glob, polib, re, os, getopt, sys
from time import strftime

def usage():
    print '\nUsage: python %s [OPTION]' %os.path.basename(sys.argv[0])
    print '       generate pot catalogs and updates po files for xsl resources in the specified directory'
    print 'Options: -h, --help                              : usage'
    print '         -d <directory>, --directory <directory> : directory with xsl files'
    sys.exit(2)
try:
    opts, args = getopt.getopt(sys.argv[1:], "hd:", ["help", "directory="])
except getopt.GetoptError:
    usage() # print help information and exit

directory='.'
for o,a in opts:
    if o in ("-h", "--help"):
        usage()
    if o in ("-d", "--directory"):
        directory=a

directory = directory.rstrip('/')

if (directory != '') and (os.path.isdir(directory) == False):
    sys.exit('Specified directory does not exist')

# Find all XSL files
files = []
for rootdir, dirnames, filenames in os.walk(directory):
    files.extend(glob.glob(rootdir + "/*.xsl"))

# Define Templates and po directory name
translationtemplate='l:l10n\ (.*?)<\/l:l10n'
tpattern=re.compile(translationtemplate,re.DOTALL)
entemplate='language=\"en\">\n(.*?)<\/l:l10n'
enpattern=re.compile(entemplate,re.DOTALL)
langtemplate='language=\"(.*?)\"'
lpattern=re.compile(langtemplate,re.DOTALL)
messagetemplate='<l:gentext key=\"(.*?)\"\/>'
mpattern=re.compile(messagetemplate,re.DOTALL)
transblocktemplate='<l:i18n xmlns:l="http:\/\/docbook.sourceforge.net\/xmlns\/l10n\/1.0\">(.*?)<\/l:i18n>'
tbpattern=re.compile(transblocktemplate,re.DOTALL)
blocktemplate='<l:i18n xmlns:l=\"http://docbook.sourceforge.net/xmlns/l10n/1.0\">\n</l:i18n>'
podir = 'po'

# Write POT file
pot = polib.POFile('',check_for_duplicates=True)
potcreationtime = strftime('%Y-%m-%d %H:%M%z')
pot.metadata = {
  'Project-Id-Version': 'Mageia XSL files translation',
  'Report-Msgid-Bugs-To': 'i18n-discuss@ml.mageia.org',
  'POT-Creation-Date': potcreationtime,
  'PO-Revision-Date': 'YEAR-MO-DA HO:MI+ZONE',
  'Last-Translator': 'FULL NAME <EMAIL@ADDRESS>',
  'Language-Team': 'LANGUAGE <LL@li.org>',
  'MIME-Version': '1.0',
  'Content-Type': 'text/plain; charset=UTF-8',
  'Content-Transfer-Encoding': '8bit',
  }

for langfile in files:
  langfiledir = langfile.replace('.xsl', '')
  langfilename = langfiledir.rpartition('/')[2]
  # Create localization directories if needed
  try:
    os.makedirs(podir)
  except OSError, e:
    if e.errno != errno.EEXIST:
        raise
  #open xsl file
  text = open(langfile,"r").read()

  # Parse contents and add them to POT
  messages = {}
  for enblock in enpattern.findall(text):
    for enmessage in mpattern.findall(enblock):
      msgkey, msg_id = enmessage.split('\" text=\"')
      messages[msgkey] = msg_id
      potentry = polib.POEntry(
	msgctxt = msgkey,
	msgid = msg_id.decode('utf-8'),
      msgstr = '',
      occurrences=[(langfile,'')]
      )
      if msg_id != '':
        try:
	  pot.append(potentry)
        except ValueError:
	  print '' # Should be some warning, ignore now
pot.save('po/doc_xsl.pot')

# Merge translations
for pofile in glob.glob(podir + '/*.po'):
  lang = pofile[:-3].rsplit('/',1)[1]
  pofilename = pofile
  po = polib.pofile(pofilename)
  po.merge(pot)
  po.save(pofilename)

for langfile in files:
  #open xsl file
  deskfile = open(langfile,"r")
  text = deskfile.read()
  deskfile.close()
  deskfile = open(langfile,"w")
  for transblock in tbpattern.findall(text):
    text = text.replace(transblock, '\n')

  # Parse PO files
  for pofile in sorted(glob.glob(podir + '/*.po'), reverse = False):
    lang = pofile[:-3].rsplit('/',1)[1]
    pofilename = pofile
    po = polib.pofile(pofilename)
    translatedtext=u'\t<l:l10n language=\"%s\">\n' %lang.lower()
    for entry in po:
      if entry.translated():
        translatedtext += u'\t\t<l:gentext key=\"%s\" text=\"%s\"/>\n' %(entry.msgctxt, entry.msgstr)
      else:
	translatedtext += '\t\t<l:gentext key=\"%s\" text=\"%s\"/>\n' %(entry.msgctxt, messages[entry.msgctxt])
    translatedtext += '\t</l:l10n>\n</l:i18n>'
    text = text.replace('</l:i18n>', translatedtext)

  # write file
  deskfile.write(text.encode('utf-8'))
  deskfile.close()