diff options
Diffstat (limited to 'tools/msgfmt.py')
| -rw-r--r-- | tools/msgfmt.py | 203 |
1 files changed, 203 insertions, 0 deletions
diff --git a/tools/msgfmt.py b/tools/msgfmt.py new file mode 100644 index 00000000..8a2d4e66 --- /dev/null +++ b/tools/msgfmt.py @@ -0,0 +1,203 @@ +#! /usr/bin/env python +# -*- coding: iso-8859-1 -*- +# Written by Martin v. Löwis <loewis@informatik.hu-berlin.de> + +"""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() + # the keys are sorted in the .mo file + keys.sort() + offsets = [] + ids = strs = '' + for id in keys: + # For each string, we need size and file offset. Each string is NUL + # terminated; the NUL does not count into the size. + offsets.append((len(ids), len(id), len(strs), len(MESSAGES[id]))) + ids += id + '\0' + strs += MESSAGES[id] + '\0' + output = '' + # The header is 7 32-bit unsigned integers. We don't use hash tables, so + # the keys start right after the index tables. + # translated string. + keystart = 7*4+16*len(keys) + # and the values start after the keys + valuestart = keystart + len(ids) + koffsets = [] + voffsets = [] + # The string table first has the list of keys, then the list of values. + # Each entry has first the size of the string, then the file offset. + for o1, l1, o2, l2 in offsets: + koffsets += [l1, o1+keystart] + voffsets += [l2, o2+valuestart] + offsets = koffsets + voffsets + output = struct.pack("Iiiiiii", + 0x950412deL, # Magic + 0, # Version + len(keys), # # of entries + 7*4, # start of key index + 7*4+len(keys)*8, # start of value index + 0, 0) # size and offset of hash table + output += array.array("i", offsets).tostring() + output += ids + output += strs + return output + + + +def make(filename, outfile): + ID = 1 + STR = 2 + + # Compute .mo name from .po name and arguments + 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 + + # Parse the catalog + lno = 0 + for l in lines: + lno += 1 + # If we get a comment line after a msgstr, this is a new entry + if l[0] == '#' and section == STR: + add(msgid, msgstr, fuzzy) + section = None + fuzzy = 0 + # Record a fuzzy mark + if l[:2] == '#,' and l.find('fuzzy'): + fuzzy = 1 + # Skip comments + if l[0] == '#': + continue + # Now we are in a msgid section, output previous section + if l.startswith('msgid'): + if section == STR: + add(msgid, msgstr, fuzzy) + section = ID + l = l[5:] + msgid = msgstr = '' + # Now we are in a msgstr section + elif l.startswith('msgstr'): + section = STR + l = l[6:] + # Skip empty lines + l = l.strip() + if not l: + continue + # XXX: Does this always follow Python escape semantics? + 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) + # Add last entry + if section == STR: + add(msgid, msgstr, fuzzy) + + # Compute output + 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 + # parse options + 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 + # do it + 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() |