#!/usr/bin/env python
# -*- coding: utf-8 -*-
#
# Copyright 2002-2006 Zuza Software Foundation
# 
# This file is part of translate.
#
# translate is free software; you can redistribute it and/or modify
# it under the terms of the GNU General Public License as published by
# the Free Software Foundation; either version 2 of the License, or
# (at your option) any later version.
# 
# translate is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
# GNU General Public License for more details.
#
# You should have received a copy of the GNU General Public License
# along with translate; if not, write to the Free Software
# Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
#

"""Converts .xliff localization files to Gettext .po files
You can convert back to .xliff using po2xliff"""

from translate.storage import po
from translate.storage import xliff
from translate.misc import wStringIO

class xliff2po:
  def converttransunit(self, transunit):
    """makes a pounit from the given transunit"""
    thepo = po.pounit()

    #Header
    if not transunit.getrestype() == "x-gettext-domain-header":
      thepo.source = transunit.source
    thepo.target = transunit.target

    #Location comments
    locations = transunit.getlocations()
    if locations:
      thepo.sourcecomments.append("#: %s\n" % " ".join(locations))

    #NOTE: Supporting both <context> and <note> tags in xliff files for comments
    #Translator comments
    trancomments = transunit.getnotes("translator")
    if trancomments:
      thepo.othercomments.extend(["# %s\n" % comment for comment in trancomments.split("\n")])
    
    #Automatic and Developer comments
    autocomments = transunit.getnotes("developer")
    if autocomments:
      thepo.automaticcomments.extend(["#. %s\n" % comment for comment in autocomments.split("\n")])

    #See 5.6.1 of the spec. We should not check fuzzyness, but approved attribute
    if transunit.isfuzzy():
      thepo.markfuzzy(True)
    
    return thepo

  def convertfile(self, inputfile):
    """converts a .xliff file to .po format"""
    # XXX: The inputfile is converted to string because Pootle supplies
    # XXX: a PootleFile object as input which cannot be sent to PoXliffFile.
    # XXX: The better way would be to have a consistent conversion API.
    if not isinstance(inputfile, (file, wStringIO.StringIO)):
        inputfile = str(inputfile)
    XliffFile = xliff.xlifffile.parsestring(inputfile)
    thepofile = po.pofile()
    headerpo = thepofile.makeheader(charset="UTF-8", encoding="8bit")
    # TODO: support multiple files
    for transunit in XliffFile.units:
        thepo = self.converttransunit(transunit)
        thepofile.units.append(thepo)
    return thepofile

def convertxliff(inputfile, outputfile, templates):
  """reads in stdin using fromfileclass, converts using convertorclass, writes to stdout"""
  convertor = xliff2po()
  outputpo = convertor.convertfile(inputfile)
  outputposrc = str(outputpo)
  outputfile.write(outputposrc)
  return 1

def main(argv=None):
  from translate.convert import convert
  formats = {"xlf":("po",convertxliff)}
  parser = convert.ConvertOptionParser(formats, usepots=True, description=__doc__)
  parser.run(argv)

