A script to backport latest translations to 2.8 branch

backport.py

# -*- coding: utf-8 -*-
# A script to backport latest translations to 2.8 branch
# 2015-06-30

import codecs
from xml.dom import minidom
from xml.etree import ElementTree

class Message:
  def __init__(self, index, context, source, translation, msg_type=None):
    self.index = index
    self.context = context
    self.source = source
    self.translation = translation
    self.type = msg_type

def escape(string):
  if string is None:
    return ""
  return string.replace("\t", "\\t").replace("\n", "\\n")

def loadTsFile(filename):
  tree = ElementTree.parse(filename)
  index = 0
  messages = {}
  for context in tree.getroot():
    context_name = context.find("name").text
    messages[context_name] = {}

    for message in context.findall("message"):
      source = message.find("source")
      translation = message.find("translation")
      msg_type = translation.get("type")
      if msg_type == "obsolete":
        continue

      numerusform = translation.find("numerusform")
      if numerusform is not None:
        translation = numerusform

      source = source.text
      translation = translation.text
      messages[context_name][source] = Message(index, context_name, source, translation, msg_type)
      index += 1

  return messages


def backport_ts(ts_from, ts_to):
  messages_from = loadTsFile(ts_from)
  messages_to = loadTsFile(ts_to)

  stats = {"added": 0, "updated": 0}

  doc = minidom.parse(ts_to)
  for context in doc.getElementsByTagName("context"):
    context_name = context.getElementsByTagName("name")[0].childNodes[0].data
    messages = context.getElementsByTagName("message")
    for i, msg in enumerate(messages):
      source = msg.getElementsByTagName("source")[0].childNodes[0].data
      t = msg.getElementsByTagName("translation")[0]
      status = t.getAttribute("type")

      msg_from = messages_from.get(context_name, {}).get(source)
      msg_to = messages_to.get(context_name, {}).get(source)
      if msg_from and msg_from.translation and msg_to and msg_to.translation:
        if msg_from.translation != msg_to.translation:
          t.childNodes[0].data = msg_from.translation

          print "update: %s, %s" % (context_name, escape(source))
          stats["updated"] += 1

      elif status == "unfinished" and len(t.childNodes) == 0:
        if msg_from and msg_from.translation:
          t.removeAttribute("type")
          t.appendChild(doc.createTextNode(msg_from.translation))

          print "found: %s, %s" % (context_name, escape(source))
          stats["added"] += 1

  print str(stats)

  # write xml
  f = codecs.open('./backport/backported.ts', 'w', 'utf-8')
  txt = doc.toxml()
  txt = txt.replace('<?xml version="1.0" ?><!DOCTYPE TS><TS language="ja" version="2.0">', '<?xml version="1.0" encoding="utf-8"?>\n<!DOCTYPE TS>\n<TS version="2.0" language="ja">')
  txt = txt.replace("'", "&apos;")
  #txt = txt.replace("<translation/>", "<translation></translation>")
  txt = txt.replace('<translation type="unfinished"/>', '<translation type="unfinished"></translation>')
  f.write(txt + "\n")
  f.close()

if __name__ == "__main__":
  import sys
  # from: latest translation file
  # to: 2.8 translation file (updated with update_ts_files.sh)
  backport_ts("translations/QGIS.qgis-application/ja.ts", "backport/qgis_ja.ts")