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#!/usr/bin/python
import copy, getopt, re, subprocess, sys, tarfile, urllib2
from os.path import dirname
default_exclude = re.compile(r'^/debian(/|$)|/\.git').search
def main():
opts, (target,) = getopt.getopt(sys.argv[1:], 'f:x:')
opts = dict(opts)
pkg, ver, rev = re.match(r"(.+)_(.+g([0-9a-z]{7,}))\.orig\.tar\.xz",
target).groups()
prefix = pkg + '-' + ver
try: # first try from local working copy
src = tarfile.open(fileobj=subprocess.Popen(
("git", "archive", "--format=tar", "--prefix=./", rev),
stdout=subprocess.PIPE, cwd=dirname(dirname(__file__)),
).stdout, mode="r|")
except (OSError, # git not installed
tarfile.ReadError, # not a working copy, revision not found, etc.
): # fallback to given url
if '-f' not in opts:
raise
url = opts['-f'] % rev
sys.stderr.write("Fall back to %s\n" % url)
src = tarfile.open(fileobj=urllib2.urlopen(url), mode="r|*")
try:
exclude = re.compile(opts['-x']).search
except KeyError:
exclude = lambda _: False
strip = len(src.firstmember.name)
with open(target, 'wb') as f:
xz = subprocess.Popen(("xz", "-c"), stdin=subprocess.PIPE, stdout=f)
try:
dst = tarfile.open(fileobj=xz.stdin, mode="w|")
for item in src:
name = item.name[strip:]
if default_exclude(name) or exclude(name):
continue
new_item = copy.copy(item)
new_item.name = prefix + name
dst.addfile(new_item, src.extractfile(item)
if item.isreg() else None)
del src
dst.close()
finally:
xz.stdin.close()
xz.wait()
if __name__ == '__main__':
sys.exit(main())
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