Mercurial > hg > mercurial-crew-with-dirclash
view mercurial/version.py @ 5420:6d1bd20ae14d
Execution bit detection fixes for VFAT on Linux
On Linux VFAT execution mode can be modified, but changes don't
persist a filesy stem remount. The current test can be trickled by
this. We can help with the det ection of VFAT checking whether new
files get created with the execution bits on
(as usually these partitions are mounted with the exec option, for
convenience)
.
author | Rafael Villar Burke <pachi@rvburke.com> |
---|---|
date | Fri, 05 Oct 2007 01:52:53 +0200 |
parents | cff3e4b4a8de |
children |
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# Copyright (C) 2005, 2006 by Intevation GmbH # Author(s): # Thomas Arendsen Hein <thomas@intevation.de> # # This program is free software under the GNU GPL (>=v2) # Read the file COPYING coming with the software for details. """ Mercurial version """ import os import os.path import re import time import util unknown_version = 'unknown' remembered_version = False def get_version(doreload=False): """Return version information if available.""" try: import mercurial.__version__ if doreload: reload(mercurial.__version__) version = mercurial.__version__.version except ImportError: version = unknown_version return version def write_version(version): """Overwrite version file.""" if version == get_version(): return directory = os.path.dirname(__file__) for suffix in ['py', 'pyc', 'pyo']: try: os.unlink(os.path.join(directory, '__version__.%s' % suffix)) except OSError: pass f = open(os.path.join(directory, '__version__.py'), 'w') f.write("# This file is auto-generated.\n") f.write("version = %r\n" % version) f.close() # reload the file we've just written get_version(True) def remember_version(version=None): """Store version information.""" global remembered_version if not version and os.path.isdir(".hg"): f = os.popen("hg identify 2> %s" % util.nulldev) # use real hg installation ident = f.read()[:-1] if not f.close() and ident: ids = ident.split(' ', 1) version = ids.pop(0) if version[-1] == '+': version = version[:-1] modified = True else: modified = False if version.isalnum() and ids: for tag in ids[0].split('/'): # is a tag is suitable as a version number? if re.match(r'^(\d+\.)+[\w.-]+$', tag): version = tag break if modified: version += time.strftime('+%Y%m%d') if version: remembered_version = True write_version(version) def forget_version(): """Remove version information.""" if remembered_version: write_version(unknown_version)