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

'''
Created on 2012-7-3

@author: daisy
'''
import os, sys
import tempfile
import shutil
import xml.dom.minidom
from optparse import OptionParser
import codecs

from xml2po import Main
default_mode = 'docbook'
operation = 'merge'
options = {
    'mark_untranslated'   : False,
    'expand_entities'     : True,
    'expand_all_entities' : False,
}

ignore_folder = {"docbkx-example"}
root = "./doc/src/docbkx"

def mergeback (folder, language):
    if (folder==None) :
        path = root
    else :
        outputFiles = mergeSingleDocument(folder, language)
        if ((outputFiles != None) and (len(outputFiles)>0)) :
            for outXML in outputFiles :
                changeXMLLangSetting (outXML, language)
        return

    if (not os.path.isdir(path)) :
        return
    
    files = os.listdir(path)
    for aFile in files :
        if  (not (aFile in ignore_folder)):
            outputFiles = mergeSingleDocument (aFile, language)
            if ((outputFiles != None) and (len(outputFiles)>0)) :
                for outXML in outputFiles :
                    changeXMLLangSetting (outXML, language)

def mergeSingleDocument(folder, language):
    xmlfiles = []
    outputfiles = []
    abspath = os.path.join(root, folder)
    if (os.path.isdir(abspath)) :
        os.path.walk(abspath, get_xml_list, xmlfiles)
    else:
        return None
    
    if len(xmlfiles)>0 :
        popath = os.path.join(abspath,"locale",language+".po")
        #generate MO file
        mofile_handler, mofile_tmppath = tempfile.mkstemp()
        os.close(mofile_handler)
        os.system("msgfmt -o %s %s" % (mofile_tmppath, popath))

        for aXML in xmlfiles :
            #(filename, ext) = os.path.splitext(os.path.basename(aXML))
            relpath = os.path.relpath(aXML, root)
            outputpath = os.path.join(os.path.curdir,  "generated", language, relpath)
            try:
                xml2po_main = Main(default_mode, operation, outputpath, options)
                xml2po_main.merge(mofile_tmppath, aXML)
                outputfiles.append(outputpath)
            except IOError:
                print "Error: cannot open aFile %s for writing."
                sys.exit(5)
            except :
                print ("Exception happen")
        if mofile_tmppath :
            os.remove(mofile_tmppath)
    
    return outputfiles
    
def changeXMLLangSetting(xmlFile, language):
    dom = xml.dom.minidom.parse(xmlFile)
    root = dom.documentElement
    root.setAttribute("xml:lang", language[:2])
    fileObj = codecs.open(xmlFile, "wb", encoding="utf-8")

    #add namespace to link
    nodelists = root.getElementsByTagName("link")
    for node in nodelists :
        if (node.hasAttribute("href")) :
            node.setAttribute("xlink:href", node.getAttribute("href"))
        if (node.hasAttribute("title")) :
            node.setAttribute("xlink:title", node.getAttribute("title"))

    dom.writexml(fileObj)

def get_xml_list (sms, dr, flst):
    if ((flst == "target") or (flst == "wadls")) :
        return
    if (dr.find("target")>-1) :
        return
    if (dr.find("wadls")>-1) :
        return

    for f in flst:
        if ((f.endswith(".xml") and (f != "pom.xml"))) :
            sms.append(os.path.join(dr,f))

def main(argv):

    usage = "usage: %prog [options] command [cmd_options]"
    description = "This is the tool to generate translated docbooks, which"\
        " will be stored in 'generated/[language]/"

    parser = OptionParser(
        usage=usage, version="0.6", description=description
    )
    parser.disable_interspersed_args()
    parser.add_option(
        "-l", "--language", dest="language", help=("specified language")
    )
    parser.add_option(
        "-b", "--book", dest="book", help=("specified docbook")
    )
    (options, args) = parser.parse_args()
    if (options.language == None) :
        print "must specify language"
        return
    
    #change working directory
    
    #copy folders
    folder = options.book
    language = options.language
    sourcepath = os.path.join(root, folder)
    destpath = os.path.join(os.path.curdir, "generated", language)
    if (not os.path.exists(destpath)) :
        os.makedirs(destpath)
    
    destfolder =  os.path.join(destpath, folder)   
    if (os.path.exists(destfolder)) :
        shutil.rmtree(destfolder)
    
    os.system("cp -r %s %s" % (sourcepath, destpath))
    mergeback(folder, language)
    
if __name__ == '__main__':
    main(sys.argv[1:])