244 lines
7.7 KiB
Python
244 lines
7.7 KiB
Python
#! /usr/bin/env python
|
|
# -*- coding: iso-8859-1 -*-
|
|
# Written by Martin v. Loewis <loewis@informatik.hu-berlin.de>
|
|
#
|
|
# Changed by Christian 'Tiran' Heimes <tiran@cheimes.de> for the placeless
|
|
# translation service (PTS) of Zope
|
|
#
|
|
# Fixed some bugs and updated to support msgctxt
|
|
# by Hanno Schlichting <hanno@hannosch.info>
|
|
|
|
"""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.
|
|
|
|
This file was taken from Python-2.3.2/Tools/i18n and altered in several ways.
|
|
Now you can simply use it from another python module:
|
|
|
|
from msgfmt import Msgfmt
|
|
mo = Msgfmt(po).get()
|
|
|
|
where po is path to a po file as string, an opened po file ready for reading or
|
|
a list of strings (readlines of a po file) and mo is the compiled mo file as
|
|
binary string.
|
|
|
|
Exceptions:
|
|
|
|
* IOError if the file couldn't be read
|
|
|
|
* msgfmt.PoSyntaxError if the po file has syntax errors
|
|
|
|
"""
|
|
import struct
|
|
import array
|
|
from cStringIO import StringIO
|
|
|
|
__version__ = "1.1-pythongettext"
|
|
|
|
class PoSyntaxError(Exception):
|
|
""" Syntax error in a po file """
|
|
def __init__(self, msg):
|
|
self.msg = msg
|
|
|
|
def __str__(self):
|
|
return 'Po file syntax error: %s' % self.msg
|
|
|
|
class Msgfmt:
|
|
""" """
|
|
def __init__(self, po, name='unknown'):
|
|
self.po = po
|
|
self.name = name
|
|
self.messages = {}
|
|
self.comments = []
|
|
|
|
def readPoData(self):
|
|
""" read po data from self.po and store it in self.poLines """
|
|
output = []
|
|
if isinstance(self.po, file):
|
|
self.po.seek(0)
|
|
output = self.po.readlines()
|
|
if isinstance(self.po, list):
|
|
output = self.po
|
|
if isinstance(self.po, str):
|
|
output = open(self.po, 'rb').readlines()
|
|
if not output:
|
|
raise ValueError, "self.po is invalid! %s" % type(self.po)
|
|
return output
|
|
|
|
def add(self, context, id, str, fuzzy):
|
|
"Add a non-empty and non-fuzzy translation to the dictionary."
|
|
if str and not fuzzy:
|
|
# The context is put before the id and separated by a EOT char.
|
|
if context:
|
|
id = context + '\x04' + id
|
|
self.messages[id] = str
|
|
|
|
def generate(self):
|
|
"Return the generated output."
|
|
keys = self.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(self.messages[id])))
|
|
ids += id + '\0'
|
|
strs += self.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.
|
|
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
|
|
# Even though we don't use a hashtable, we still set its offset to be
|
|
# binary compatible with the gnu gettext format produced by:
|
|
# msgfmt file.po --no-hash
|
|
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, keystart) # size and offset of hash table
|
|
output += array.array("i", offsets).tostring()
|
|
output += ids
|
|
output += strs
|
|
return output
|
|
|
|
def parse(self):
|
|
""" """
|
|
ID = 1
|
|
STR = 2
|
|
CTXT = 3
|
|
|
|
section = None
|
|
fuzzy = 0
|
|
msgid = msgstr = msgctxt = ''
|
|
|
|
lines = self.readPoData()
|
|
|
|
# Parse the catalog
|
|
lno = 0
|
|
for l in lines:
|
|
lno += 1
|
|
# If we get a comment line after a msgstr or a line starting with
|
|
# msgid or msgctxt, this is a new entry
|
|
if (l[0] == '#' or
|
|
l.startswith('msgctxt') or
|
|
l.startswith('msgid')) and section == STR:
|
|
|
|
self.add(msgctxt, msgid, msgstr, fuzzy)
|
|
section = None
|
|
fuzzy = 0
|
|
# Record a fuzzy mark
|
|
if l[:2] == '#,' and 'fuzzy' in l:
|
|
fuzzy = 1
|
|
# Skip comments
|
|
if l[0] == '#':
|
|
if not self.messages:
|
|
self.comments.append(l[:-1])
|
|
continue
|
|
# Now we are in a msgctxt section
|
|
if l.startswith('msgctxt'):
|
|
section = CTXT
|
|
l = l[7:]
|
|
msgctxt = ''
|
|
# Now we are in a msgid section, output previous section
|
|
if l.startswith('msgid'):
|
|
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?
|
|
try:
|
|
l = eval(l)
|
|
except Exception, msg:
|
|
raise PoSyntaxError('%s (line %d of po file %s): \n%s' % (msg, lno, self.name, l))
|
|
if section == CTXT:
|
|
msgctxt += l
|
|
elif section == ID:
|
|
msgid += l
|
|
elif section == STR:
|
|
msgstr += l
|
|
else:
|
|
raise PoSyntaxError('error in line %d of po file %s' % (lno, self.name))
|
|
|
|
# Add last entry
|
|
if section == STR:
|
|
self.add(msgctxt, msgid, msgstr, fuzzy)
|
|
|
|
def get(self):
|
|
self.parse()
|
|
# Compute output
|
|
return self.generate()
|
|
|
|
def getAsFile(self):
|
|
return StringIO(self.get())
|
|
|
|
def _escape(string):
|
|
escaped = ''
|
|
for c in string:
|
|
if c == '\r':
|
|
escaped += '\\r'
|
|
elif c == '\n':
|
|
escaped += '\\n'
|
|
elif c == '\t':
|
|
escaped += '\\t'
|
|
elif c == '\\':
|
|
escaped += '\\\\'
|
|
elif c == '"':
|
|
escaped += '\\"'
|
|
else:
|
|
escaped += c
|
|
return escaped
|
|
|
|
def _format(string):
|
|
lines = string.splitlines()
|
|
if len(lines) > 1:
|
|
formatted = '""'
|
|
for i in range(len(lines)):
|
|
if i == len(lines) - 1:
|
|
formatted += '\n"%s"' % (_escape(lines[i]),)
|
|
else:
|
|
formatted += '\n"%s\\n"' % (_escape(lines[i]),)
|
|
else:
|
|
formatted = '"%s"' % (_escape(string),)
|
|
return formatted
|
|
|
|
def _strip(po, output):
|
|
cat = Msgfmt(po)
|
|
cat.parse()
|
|
keys = cat.messages.keys()
|
|
keys.sort()
|
|
for l in cat.comments:
|
|
print >>output, l
|
|
for k in keys:
|
|
if k != cat.messages[k]:
|
|
print >>output, 'msgid %s' % (_format(k),)
|
|
print >>output, 'msgstr %s' % (_format(cat.messages[k]),)
|
|
print >>output
|
|
|
|
if __name__ == '__main__':
|
|
import sys
|
|
_strip(sys.argv[1], sys.stdout)
|