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◆ main openmsx / build / gitdist.py
3.5 KiB · Python · executable · last changed chore(): initial commit 1 month ago source blame history raw
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#!/usr/bin/env python3
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# Creates a source distribution package.
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from os import makedirs, remove
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from os.path import isdir
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from subprocess import CalledProcessError, PIPE, Popen, check_output
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from tarfile import TarError, TarFile
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import stat, sys
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verbose = False
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def archiveFromGit(versionedPackageName, committish):
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	prefix = '%s/' % versionedPackageName
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	distBase = 'derived/dist/'
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	umask = (
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			stat.S_IRUSR | stat.S_IWUSR | stat.S_IXUSR |
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			stat.S_IRGRP |                stat.S_IXGRP |
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			stat.S_IROTH |                stat.S_IXOTH
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			)
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	def exclude(info):
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		'''Returns True iff the given tar entry should be excluded.
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		'''
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		return any((
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				info.name.endswith('/.gitignore'),
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				info.name.startswith(prefix + 'doc/internal'),
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				info.name.startswith(prefix + '.'),
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				info.name[info.name.rfind('/') + 1:].startswith('meson'),
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				))
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	proc = Popen(
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			('git', 'archive', '--prefix=' + prefix, '--format=tar', committish),
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			bufsize = -1,
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			stdin = None, stdout = PIPE, stderr = sys.stderr,
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			)
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	try:
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		outTarPath = distBase + versionedPackageName + '.tar.gz'
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		print('archive:', outTarPath)
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		if not isdir(distBase):
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			makedirs(distBase)
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		try:
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			with TarFile.open(outTarPath, 'w:gz') as outTar:
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				# Copy entries from "git archive" into output tarball,
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				# except for excluded entries.
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				numIncluded = numExcluded = 0
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				with TarFile.open(mode='r|', fileobj=proc.stdout) as inTar:
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					for info in inTar:
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						if exclude(info):
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							if verbose:
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								print('EX', info.name)
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							numExcluded += 1
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						else:
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							if verbose:
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								print('IN', info.name)
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							numIncluded += 1
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							info.uid = info.gid = 1000
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							info.uname = info.gname = 'openmsx'
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							info.mode = info.mode & umask
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							outTar.addfile(info, inTar.extractfile(info))
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				print('entries: %d included, %d excluded' % (
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						numIncluded, numExcluded))
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		except:
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			# Clean up partial output file.
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			remove(outTarPath)
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			raise
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	except:
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		proc.terminate()
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		raise
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	else:
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		data, _ = proc.communicate()
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		if len(data) != 0:
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			print(
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				'WARNING: %d more bytes of data from "git archive" after '
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				'tar stream ended' % len(data),
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				file=sys.stderr
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				)
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def niceVersionFromGitDescription(description):
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	'''Our release tag names are still based on naming limitations from CVS;
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	convert them to something more pleasing to the eyes.
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	'''
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	parts = description.split('-')
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	tag = parts[0]
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	if tag.startswith('RELEASE_'):
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		tagParts = tag.split('_')[1 : ]
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		i = 0
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		while i < len(tagParts) and tagParts[i].isdigit():
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			i += 1
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		version = '-'.join(
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				['.'.join(tagParts[ : i])] +
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				[s.lower() for s in tagParts[i : ]]
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				)
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	else:
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		version = tag
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	if len(parts) >= 2:
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		parts[1] = 'dev' + parts[1]
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	return '-'.join([version] + parts[1 : ])
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def getDescription(committish):
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	args = ['git', 'describe', '--abbrev=9']
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	if committish is not None:
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		args.append(committish)
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	try:
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		data = check_output(args)
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	except CalledProcessError as ex:
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		print(
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			'"%s" returned %d' % (' '.join(args), ex.returncode),
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			file=sys.stderr
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			)
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		raise
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	else:
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		return data.decode('utf-8', 'replace').rstrip('\n')
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def main(committish = None):
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	try:
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		description = getDescription(committish)
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	except CalledProcessError:
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		sys.exit(1)
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	version = niceVersionFromGitDescription(description)
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	try:
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		archiveFromGit('openmsx-%s' % version, description)
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	except (OSError, TarError) as ex:
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		print('ERROR: %s' % ex, file=sys.stderr)
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		sys.exit(1)
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if __name__ == '__main__':
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	if len(sys.argv) == 1:
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		main()
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	elif len(sys.argv) == 2:
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		main(sys.argv[1])
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	else:
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		print('Usage: gitdist.py [branch | tag]', file=sys.stderr)
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		sys.exit(2)