extract_pot.py
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extract_pot.py
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	import sys, os, os.path
	from collections import defaultdict

	#The path to the levelpack.
	levelpackPath = ""

	#The dictionary which will hold all the translatable strings.
	dictionary = defaultdict(list)

	#The file stream to write to.
	potFile = None

	#Some vars to keep track of where we are/get stuff from.
	curfile = ""
	curline = 1


	#Method that will create the .pot file and open the file stream.
	def openPotFile():
	for root, dirs, files in os.walk(levelpackPath):
	#Check if the directory 'locale' is present.
	fullpath = os.path.join(root, 'locale')
	if not os.path.exists(fullpath):
	os.makedirs(fullpath)
	fullpath = os.path.join(fullpath, 'messages.pot')
	global potFile
	potFile = open(fullpath,"w")
	break


	#Method that loops through the files of the levelpack.
	def loopfiles():
	for root, dirs, files in os.walk(levelpackPath):
	if root.count(os.sep) < 1:
	for f in files:
	fullpath = os.path.join(root, f)
	global curfile
	curfile = fullpath
	looplines(fullpath)

	#Method that loops through the lines of a given file.
	def looplines(f):
	fileInput = open(f,"r")
	global curline
	curline = 1
	for line in fileInput:
	lookup(line)
	curline += 1
	fileInput.close();

	#Method that looks up the line to check if it contains a translatable string.
	def lookup(line):
	signs = 0
	#Check for a '=' sign.
	for c in line:
	if c == '=':
	signs += 1
	if signs > 1:
	print "WARNING: Multiple '=' signs, using first one."
	if signs > 0:
	key = line.split( "=" )[0].rstrip('\r\n"').lstrip('"').strip()
	value = line.split( "=" )[1]

	#Check if the key is a translatable one.
	if key in ['congratulations', 'description', 'name', 'message']:
	#writeEntry('#: ' + curfile + ':' + str(curline), value)
	dictionary[value].append('#: ' + curfile + ':' + str(curline))

	#Method that will write the header.
	def writeHeader():
	potFile.write('# SOME DESCRIPTIVE TITLE.\n')
	potFile.write('# Copyright (C) YEAR THE PACKAGE\'S COPYRIGHT HOLDER\n')
	potFile.write('# This file is distributed under the same license as the PACKAGE package.\n')
	potFile.write('# FIRST AUTHOR <EMAIL@ADDRESS>, YEAR.\n')
	potFile.write('#\n')
	potFile.write('#, fuzzy\n')
	potFile.write('msgid ""\n')
	potFile.write('msgstr ""\n')
	potFile.write('"Project-Id-Version: PACKAGE VERSION\\n"\n')
	potFile.write('"Report-Msgid-Bugs-To: \\n"\n')
	potFile.write('"POT-Creation-Date: 2012-04-01 17:56+0300\\n"\n')
	potFile.write('"PO-Revision-Date: YEAR-MO-DA HO:MI+ZONE\\n"\n')
	potFile.write('"Last-Translator: FULL NAME <EMAIL@ADDRESS>\\n"\n')
	potFile.write('"Language-Team: LANGUAGE <LL@li.org>\\n"\n')
	potFile.write('"Language: \\n"\n')
	potFile.write('"MIME-Version: 1.0\\n"\n')
	potFile.write('"Content-Type: text/plain; charset=CHARSET\\n"\n')
	potFile.write('"Content-Transfer-Encoding: 8bit\\n"\n')
	potFile.write('\n')

	#Method that performs the actual writing.
	def writeEntries():
	for msgid, comments in dictionary.iteritems():
	#Remove any trailing or leading '"' or '/n'
	msgid = msgid.rstrip('\r\n"').lstrip('"')

	#Write it to the file.
	for comment in comments:
	potFile.write(comment)
	potFile.write('\n')
	potFile.write('msgid "' + msgid + '"\n')
	potFile.write('msgstr ""\n')
	potFile.write('\n')


	#First check command line arguments.
	if len(sys.argv) != 2:
	print "Usage: python ./extract_pot.py <path/to/levelpack/>"
	sys.exit(0)

	#Set the levelpack path
	levelpackPath = sys.argv[1]

	#Gather the translatable strings.
	loopfiles()

	#Now create the pot file and fill it.
	openPotFile()
	writeHeader()
	writeEntries()

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