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#! /usr/bin/env python
import sys
from os import path, chdir
from subprocess import Popen, PIPE
from sys import argv, stdout
from fnmatch import fnmatch
class GitArchiver(object):
"""
GitArchiver
Scan a git repository and export all tracked files, and submodules.
Checks for .gitattributes files in each directory and uses 'export-ignore'
pattern entries for ignore files in the archive.
Automatically detects output format extension: zip, tar, bz2, or gz
"""
def __init__(self, prefix='', verbose=False, exclude=True, force_sub=False, extra=[]):
self.prefix = prefix
self.verbose = verbose
self.exclude = exclude
self.extra = extra
self.force_sub = force_sub
self._excludes = []
def create(self, output_file):
"""
create(str output_file) -> None
Creates the archive, written to the given output_file
Filetype may be one of: gz, zip, bz2, tar, tgz
"""
#
# determine the format
#
_, _, format = output_file.rpartition(".")
format = format.lower()
if format == 'zip':
from zipfile import ZipFile, ZIP_DEFLATED
output_archive = ZipFile(path.abspath(output_file), 'w')
add = lambda name, arcname: output_archive.write(name, self.prefix + arcname, ZIP_DEFLATED)
elif format in ['tar', 'bz2', 'gz', 'tgz']:
import tarfile
if format == 'tar':
t_mode = 'w'
elif format == 'tgz':
t_mode = 'w:gz'
else:
t_mode = ('w:%s' % format)
output_archive = tarfile.open(path.abspath(output_file), t_mode)
add = lambda name, arcname: output_archive.add(name, self.prefix + arcname)
else:
raise RuntimeError("Unknown format: '%s'" % format)
#
# compress
#
# extra files first (we may change folder later)
for name in self.extra:
if self.verbose:
toPath = '=> %s%s' % (self.prefix, name) if self.prefix else ""
print 'Compressing %s %s ...' % (name, toPath)
add(name, name)
self._excludes = []
for name, arcname in self.listFiles(path.abspath('')):
if self.verbose:
toPath = '=> %s%s' % (self.prefix, arcname) if self.prefix else ""
print 'Compressing %s %s ...' % (arcname, toPath)
add(name, arcname)
output_archive.close()
def listFiles(self, git_repositary_path, baselevel=''):
"""
listFiles(str git_repository_path, str baselevel='') -> iterator
An iterator method that yields a tuple(filepath, fullpath)
for each file that should be included in the archive.
Skips those that match the exclusion patterns found in
any discovered .gitattributes files along the way.
Recurses into submodules as well.
"""
for filepath in self.runShell('git ls-files --cached --full-name --no-empty-directory'):
filepath = filepath.decode('string_escape').strip('"')
fullpath = path.join(baselevel, filepath)
filename = path.basename(filepath)
if self.exclude and filename == '.gitattributes':
self._excludes = []
fh = open(filepath, 'r')
for line in fh:
if not line: break
tokens = line.strip().split()
if 'export-ignore' in tokens[1:]:
self._excludes.append(tokens[0])
fh.close()
# Only list symlinks and files that don't start with git
if not filename.startswith('.git') \
and (path.islink(filepath) or not path.isdir(filepath)):
# check the patterns first
ignore = False
for pattern in self._excludes:
if fnmatch(fullpath, pattern) or fnmatch(filename, pattern):
if self.verbose: print 'Exclude pattern matched (%s): %s' % (pattern, fullpath)
ignore = True
break
if ignore:
continue
# baselevel is needed to tell the arhiver where it have to extract file
yield filepath, fullpath
if self.force_sub :
self.runShell("git submodule init")
self.runShell("git submodule update")
# get paths for every submodule
for submodule in self.runShell("git submodule --quiet foreach 'pwd'"):
chdir(submodule)
# in order to get output path we need to exclude repository path from the submodule path
submodule = submodule[len(git_repositary_path)+1:]
# recursion allows us to process repositories with more than one level of submodules
for git_file in self.listFiles(git_repositary_path, submodule):
yield git_file
@staticmethod
def runShell(cmd):
return Popen(cmd, shell=True, stdout=PIPE).stdout.read().splitlines()
if __name__ == "__main__":
from optparse import OptionParser
parser = OptionParser(usage="usage: %prog [-v] [--prefix PREFIX] [--no-exclude] OUTPUT_FILE", version="%prog 1.3")
parser.add_option('--prefix', type='string', dest='prefix',
default='', help="prepend PREFIX to each filename in the archive")
parser.add_option('-v', '--verbose', action='store_true', dest='verbose', help='enable verbose mode')
parser.add_option('--no-exclude', action='store_false', dest='exclude',
default=True, help="Don't read .gitattributes files for patterns containing export-ignore attrib")
parser.add_option('--force-submodules', action='store_true', dest='force_sub',
help="Force a git submodule init && git submodule update at each level before iterating submodules.")
parser.add_option('--extra', action='append', dest='extra', default=[],
help="Any additional files to include in the archive.")
options, args = parser.parse_args()
if len(args) != 1:
parser.error('You must specify exactly one output file')
outFile = args[0]
if path.isdir(outFile):
parser.error('You cannot use directory as output')
archiver = GitArchiver(options.prefix,
options.verbose,
options.exclude,
options.force_sub,
options.extra)
try:
archiver.create(outFile)
except Exception, e:
parser.exit(2, "%s\n" % e)
sys.exit(0)
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