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from contextlib import closing
import os.path
from os.path import join
import logging
from pythongettext.msgfmt import Msgfmt
from pythongettext.msgfmt import PoSyntaxError
logger = logging.getLogger('zope.i18n')
HAS_PYTHON_GETTEXT = True
def _safe_mtime(path):
try:
return os.path.getmtime(path)
except (IOError, OSError):
return None
def compile_mo_file(domain, lc_messages_path):
"""Creates or updates a mo file in the locales folder."""
base = join(lc_messages_path, domain)
pofile = str(base + '.po')
mofile = str(base + '.mo')
po_mtime = _safe_mtime(pofile)
mo_mtime = _safe_mtime(mofile) or 0
if po_mtime is None:
logger.debug("Unable to access %s (%s)",
pofile, po_mtime)
return
if po_mtime > mo_mtime:
try:
# Msgfmt.getAsFile returns io.BytesIO on Python 3, and cStringIO.StringIO
# on Python 2; sadly StringIO isn't a proper context manager, so we have to
# wrap it with `closing`. Also, Msgfmt doesn't properly close a file
# it opens for reading if you pass the path, but it does if you pass
# the file.
with open(pofile, 'rb') as pofd:
with closing(Msgfmt(pofd, domain).getAsFile()) as mo:
with open(mofile, 'wb') as fd:
fd.write(mo.read())
except PoSyntaxError as err:
logger.warning('Syntax error while compiling %s (%s).', pofile, err.msg)
except (IOError, OSError) as err:
logger.warning('Error while compiling %s (%s).', pofile, err)
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