"""Generate binary message catalog from textual translation description.
This program converts a textual Uniforum-style message catalog (.po file) into
a binary GNU catalog (.mo file). This is essentially the same function as the
GNU msgfmt program, however, it is a simpler implementation.
Usage: msgfmt.py [OPTIONS] filename.po
Options:
-o file
--output-file=file
Specify the output file to write to. If omitted, output will go to a
file named filename.mo (based off the input file name).
-h
--help
Print this message and exit.
-V
--version
Display version information and exit.
"""
import sys
import os
import getopt
import struct
import array
__version__ = "1.1"
MESSAGES = {}
def usage(code, msg=''):
print >> sys.stderr, __doc__
if msg:
print >> sys.stderr, msg
sys.exit(code)
def add(id, str, fuzzy):
"Add a non-fuzzy translation to the dictionary."
global MESSAGES
if not fuzzy and str:
MESSAGES[id] = str
def generate():
"Return the generated output."
global MESSAGES
keys = MESSAGES.keys()
keys.sort()
offsets = []
ids = strs = ''
for id in keys:
offsets.append((len(ids), len(id), len(strs), len(MESSAGES[id])))
ids += id + '\0'
strs += MESSAGES[id] + '\0'
output = ''
keystart = 7*4+16*len(keys)
valuestart = keystart + len(ids)
koffsets = []
voffsets = []
for o1, l1, o2, l2 in offsets:
koffsets += [l1, o1+keystart]
voffsets += [l2, o2+valuestart]
offsets = koffsets + voffsets
output = struct.pack("Iiiiiii",
0x950412deL, 0, len(keys), 7*4, 7*4+len(keys)*8, 0, 0) output += array.array("i", offsets).tostring()
output += ids
output += strs
return output
def make(filename, outfile):
ID = 1
STR = 2
if filename.endswith('.po'):
infile = filename
else:
infile = filename + '.po'
if outfile is None:
outfile = os.path.splitext(infile)[0] + '.mo'
try:
lines = open(infile).readlines()
except IOError, msg:
print >> sys.stderr, msg
sys.exit(1)
section = None
fuzzy = 0
lno = 0
for l in lines:
lno += 1
if l[0] == '#' and section == STR:
add(msgid, msgstr, fuzzy)
section = None
fuzzy = 0
if l[:2] == '#,' and l.find('fuzzy'):
fuzzy = 1
if l[0] == '#':
continue
if l.startswith('msgid'):
if section == STR:
add(msgid, msgstr, fuzzy)
section = ID
l = l[5:]
msgid = msgstr = ''
elif l.startswith('msgstr'):
section = STR
l = l[6:]
l = l.strip()
if not l:
continue
l = eval(l)
if section == ID:
msgid += l
elif section == STR:
msgstr += l
else:
print >> sys.stderr, 'Syntax error on %s:%d' % (infile, lno), \
'before:'
print >> sys.stderr, l
sys.exit(1)
if section == STR:
add(msgid, msgstr, fuzzy)
output = generate()
try:
open(outfile,"wb").write(output)
except IOError,msg:
print >> sys.stderr, msg
def main():
try:
opts, args = getopt.getopt(sys.argv[1:], 'hVo:',
['help', 'version', 'output-file='])
except getopt.error, msg:
usage(1, msg)
outfile = None
for opt, arg in opts:
if opt in ('-h', '--help'):
usage(0)
elif opt in ('-V', '--version'):
print >> sys.stderr, "msgfmt.py", __version__
sys.exit(0)
elif opt in ('-o', '--output-file'):
outfile = arg
if not args:
print >> sys.stderr, 'No input file given'
print >> sys.stderr, "Try `msgfmt --help' for more information."
return
for filename in args:
make(filename, outfile)
if __name__ == '__main__':
main()