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#!/usr/bin/env python
# -* coding: utf-8 -*-
import sys, re
from itertools import *
from polib import *

def info(name,alt):
    print "{0}: {1} translated, {2} untranslated, {3} obsolete, {4} fuzzy.".format(
            name, len(alt.translated_entries()),
            len(alt.untranslated_entries()),
            len(alt.obsolete_entries()),
            len(alt.fuzzy_entries())
            )

def hack(dst, tra):
    rehacks=(
            re.compile(r"(?:^|(?<=\n))((?:\\t|\s|\t)*)(\S*)((?:\\t|\s|\t)*)(.+?)([.:!]*(?:[\n]|$))"),
            )

    def cha0(el,reh):
        return "".join([ch[1]+ch[3] for ch in reh.findall(el)])

    mf={cha0(e,reh):tra[e] for reh in rehacks for e in tra if len(tra[e])>1}
    for e in dst:
        if e.msgid and not e.msgstr:
            for reh in rehacks:
                key = cha0(e.msgid,reh)
                if key in mf and mf[key]:
                    mesg, trans = reh.findall(e.msgid), reh.findall(mf[key])
                    if mesg and trans:
                        print (e.msgid,)
                        print mesg, trans
                        e.msgstr = "".join([m[0]+t[1]+m[2]+t[3]+m[4] for t,m in zip(trans,mesg)])

def extran(src):
    rehacks=(
              ( re.compile(r"(.*)", re.DOTALL), r"\1"),
              ( re.compile(r"        WARN    "), r"      %s  "),
              ( re.compile(r"'([^']*)'"), r'"\1"'),
            )
    tra={}
    # patched
    for e in src:
        if e.msgstr:
            for rep, to in rehacks:
                tra[rep.sub(to, e.msgid)]=rep.sub(to, e.msgstr)
    for k in tra.keys():
        if k.count('\n')>1:
            kk,tt = k.split('\n'), tra[k].split('\n')
            if len(kk) == len(tt):
                for ke, te in zip(kk,tt):
                    tra[ke]=te
    return tra

def keepeng(dst):
    for e in dst:
        if not e.msgstr:
            # TODO autotranslate some autogeneratings
            e.msgstr = e.msgid
            e.flags.append("fuzzy")

def rmerrs(dst):
    '''Errors produced by ./checkpo'''
    rehacks=(
            (re.compile(r"(.*?)(!+|[.]{2,})?[\n]*$",re.DOTALL),r"\1"),
            )
    for e in dst:
        for reh, rep in rehacks:
            e.msgstr = reh.sub(rep, e.msgstr)

dst = pofile(sys.argv[1])
info("dst",dst)
traslations ={}
for fsrc in sys.argv[1:]:
    src = pofile(fsrc)
    info(fsrc,src)
    traslations.update(extran(src))

hack(dst, traslations)
info("hacked",dst)

keepeng(dst)
info("keep englsh",dst)

rmerrs(dst)

dst.save(sys.argv[1])