/brz/remove-bazaar

#!/usr/bin/env python

"""\

This script runs after rsyncing bzr.

It checks the bzr version, and sees if there is a tarball and

zipfile that exist with that version.

If not, it creates them.

"""

import os, sys, tempfile

def sync(remote, local, verbose=False):

	"""Do the actual synchronization

	"""

	if verbose:

		status = os.system('rsync -av --delete "%s" "%s"' % (remote, local))

	else:

		status = os.system('rsync -a --delete "%s" "%s"' % (remote, local))

	return status==0

def create_tar_gz(local_dir, output_dir=None, verbose=False):

	import tarfile, bzrlib

	out_name = os.path.basename(local_dir) + '-' + str(bzrlib.Branch(local_dir).revno())

	final_path = os.path.join(output_dir, out_name + '.tar.gz')

	if os.path.exists(final_path):

		if verbose:

			print 'Output file already exists: %r' % final_path

		return

	fn, tmp_path=tempfile.mkstemp(suffix='.tar', prefix=out_name, dir=output_dir)

	os.close(fn)

	try:

		if verbose:

			print 'Creating %r (%r)' % (final_path, tmp_path)

		tar = tarfile.TarFile(name=tmp_path, mode='w')

		tar.add(local_dir, arcname=out_name, recursive=True)

		tar.close()

		if verbose:

			print 'Compressing...'

		if os.system('gzip "%s"' % tmp_path) != 0:

			raise ValueError('Failed to compress')

		tmp_path += '.gz'

                os.chmod(tmp_path, 0644)

		os.rename(tmp_path, final_path)

	except:

		os.remove(tmp_path)

		raise

def create_tar_bz2(local_dir, output_dir=None, verbose=False):

	import tarfile, bzrlib

	out_name = os.path.basename(local_dir) + '-' + str(bzrlib.Branch(local_dir).revno())

	final_path = os.path.join(output_dir, out_name + '.tar.bz2')

	if os.path.exists(final_path):

		if verbose:

			print 'Output file already exists: %r' % final_path

		return

	fn, tmp_path=tempfile.mkstemp(suffix='.tar', prefix=out_name, dir=output_dir)

	os.close(fn)

	try:

		if verbose:

			print 'Creating %r (%r)' % (final_path, tmp_path)

		tar = tarfile.TarFile(name=tmp_path, mode='w')

		tar.add(local_dir, arcname=out_name, recursive=True)

		tar.close()

		if verbose:

			print 'Compressing...'

		if os.system('bzip2 "%s"' % tmp_path) != 0:

			raise ValueError('Failed to compress')

		tmp_path += '.bz2'

                os.chmod(tmp_path, 0644)

		os.rename(tmp_path, final_path)

	except:

		os.remove(tmp_path)

		raise

def create_zip(local_dir, output_dir=None, verbose=False):

	import zipfile, bzrlib

	out_name = os.path.basename(local_dir) + '-' + str(bzrlib.Branch(local_dir).revno())

	final_path = os.path.join(output_dir, out_name + '.zip')

	if os.path.exists(final_path):

		if verbose:

			print 'Output file already exists: %r' % final_path

		return

	fn, tmp_path=tempfile.mkstemp(suffix='.zip', prefix=out_name, dir=output_dir)

	os.close(fn)

	try:

		if verbose:

			print 'Creating %r (%r)' % (final_path, tmp_path)

		zip = zipfile.ZipFile(file=tmp_path, mode='w')

		try:

			for root, dirs, files in os.walk(local_dir):

				for f in files:

					path = os.path.join(root, f)

					arcname = os.path.join(out_name, path[len(local_dir)+1:])

					zip.write(path, arcname=arcname)

		finally:

			zip.close()

                os.chmod(tmp_path, 0644)

		os.rename(tmp_path, final_path)

	except:

		os.remove(tmp_path)

		raise

def get_local_dir(remote, local):

	"""This returns the full path to the local directory where 

	the files are kept.

	rsync has the trick that if the source directory ends in a '/' then

	the file will be copied *into* the target. If it does not end in a slash,

	then the directory will be added into the target.

	"""

	if remote[-1:] == '/':

		return local

	# rsync paths are typically user@host:path/to/something

	# the reason for the split(':') is in case path doesn't contain a slash

	extra = remote.split(':')[-1].split('/')[-1]

	return os.path.join(local, extra)

def get_output_dir(output, local):

	if output:

		return output

	return os.path.dirname(os.path.realpath(local))

def main(args):

	import optparse

	p = optparse.OptionParser(usage='%prog [options] [remote] [local]'

		'\n  rsync the remote repository to the local directory'

		'\n  if remote is not given, it defaults to "bazaar-ng.org::bazaar-ng/bzr/bzr.dev"'

		'\n  if local is not given it defaults to "."')

        p.add_option('--verbose', action='store_true'

                , help="Describe the process")

	p.add_option('--no-tar-gz', action='store_false', dest='create_tar_gz', default=True

		, help="Don't create a gzip compressed tarfile.")

	p.add_option('--no-tar-bz2', action='store_false', dest='create_tar_bz2', default=True

		, help="Don't create a bzip2 compressed tarfile.")

	p.add_option('--no-zip', action='store_false', dest='create_zip', default=True

		, help="Don't create a zipfile.")

	p.add_option('--output-dir', default=None

		, help="Set the output location, default is just above the final local directory.")

	(opts, args) = p.parse_args(args)

	if len(args) < 1:

		remote = 'bazaar-ng.org::bazaar-ng/bzr/bzr.dev'

	else:

		remote = args[0]

	if len(args) < 2:

		local = '.'

	else:

		local = args[1]

	if len(args) > 2:

		print 'Invalid number of arguments, see --help for details.'

	if not sync(remote, local, verbose=opts.verbose):

		if opts.verbose:

			print '** rsync failed'

		return 1

	# Now we have the new update

	local_dir = get_local_dir(remote, local)

	output_dir = get_output_dir(opts.output_dir, local_dir)

	if opts.create_tar_gz:

		create_tar_gz(local_dir, output_dir=output_dir, verbose=opts.verbose)

	if opts.create_tar_bz2:

		create_tar_bz2(local_dir, output_dir=output_dir, verbose=opts.verbose)

	if opts.create_zip:

		create_zip(local_dir, output_dir=output_dir, verbose=opts.verbose)

	return 0

if __name__ == '__main__':

	sys.exit(main(sys.argv[1:]))