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import py
import os
from subprocess import Popen, PIPE
import rpython
rpythondir = os.path.dirname(os.path.realpath(rpython.__file__))
rpythonroot = os.path.dirname(rpythondir)
default_retval = '?', '?'
def maywarn(err, repo_type='Mercurial'):
if not err:
return
from rpython.tool.ansi_print import AnsiLogger
log = AnsiLogger("version")
log.WARNING('Errors getting %s information: %s' % (repo_type, err))
def get_repo_version_info(hgexe=None, root=rpythonroot):
'''Obtain version information by invoking the 'hg' or 'git' commands.'''
# Debian: built from a source tarball
p = Popen(('dpkg-parsechangelog',), stdout=PIPE, cwd=rpythonroot)
if p.wait() != 0:
maywarn(p.stderr.read(), 'dpkg-parsechangelog')
return default_retval
for line in p.stdout.read().split('\n'):
if line.split(':', 1)[0].strip() == 'Version':
version = line.split(':', 1)[1].strip()
return '', version
# Try to see if we can get info from Git if hgexe is not specified.
if not hgexe:
if os.path.isdir(os.path.join(root, '.git')):
return _get_git_version(root)
# Fallback to trying Mercurial.
if hgexe is None:
hgexe = py.path.local.sysfind('hg')
if os.path.isfile(os.path.join(root, '.hg_archival.txt')):
return _get_hg_archive_version(os.path.join(root, '.hg_archival.txt'))
elif not os.path.isdir(os.path.join(root, '.hg')):
maywarn('Not running from a Mercurial repository!')
return default_retval
elif not hgexe:
maywarn('Cannot find Mercurial command!')
return default_retval
else:
return _get_hg_version(hgexe, root)
def _get_hg_version(hgexe, root):
env = dict(os.environ)
# get Mercurial into scripting mode
env['HGPLAIN'] = '1'
# disable user configuration, extensions, etc.
env['HGRCPATH'] = os.devnull
try:
p = Popen([str(hgexe), 'version', '-q'],
stdout=PIPE, stderr=PIPE, env=env)
except OSError as e:
maywarn(e)
return default_retval
if not p.stdout.read().startswith('Mercurial Distributed SCM'):
maywarn('command does not identify itself as Mercurial')
return default_retval
p = Popen([str(hgexe), 'id', '-i', root],
stdout=PIPE, stderr=PIPE, env=env)
hgid = p.stdout.read().strip()
if p.wait() != 0:
maywarn(p.stderr.read())
hgid = '?'
p = Popen([str(hgexe), 'id', '-t', root],
stdout=PIPE, stderr=PIPE, env=env)
hgtags = [t for t in p.stdout.read().strip().split() if t != 'tip']
if p.wait() != 0:
maywarn(p.stderr.read())
hgtags = ['?']
if hgtags:
return hgtags[0], hgid
else:
# use the branch instead
p = Popen([str(hgexe), 'id', '-b', root],
stdout=PIPE, stderr=PIPE, env=env)
hgbranch = p.stdout.read().strip()
if p.wait() != 0:
maywarn(p.stderr.read())
return hgbranch, hgid
def _get_hg_archive_version(path):
fp = open(path)
try:
data = dict(x.split(': ', 1) for x in fp.read().splitlines())
finally:
fp.close()
if 'tag' in data:
return data['tag'], data['node']
else:
return data['branch'], data['node']
def _get_git_version(root):
#XXX: this function is a untested hack,
# so the git mirror tav made will work
gitexe = py.path.local.sysfind('git')
if not gitexe:
return default_retval
try:
p = Popen(
[str(gitexe), 'rev-parse', 'HEAD'],
stdout=PIPE, stderr=PIPE, cwd=root
)
except OSError as e:
maywarn(e, 'Git')
return default_retval
if p.wait() != 0:
maywarn(p.stderr.read(), 'Git')
return default_retval
revision_id = p.stdout.read().strip()[:12]
p = Popen(
[str(gitexe), 'describe', '--tags', '--exact-match'],
stdout=PIPE, stderr=PIPE, cwd=root
)
if p.wait() != 0:
p = Popen(
[str(gitexe), 'branch'], stdout=PIPE, stderr=PIPE,
cwd=root
)
if p.wait() != 0:
maywarn(p.stderr.read(), 'Git')
return '?', revision_id
branch = '?'
for line in p.stdout.read().strip().split('\n'):
if line.startswith('* '):
branch = line[1:].strip()
if branch == '(no branch)':
branch = '?'
break
return branch, revision_id
return p.stdout.read().strip(), revision_id
if __name__ == '__main__':
print get_repo_version_info()
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