#!/usr/bin/python

from debian_bundle import deb822
from gzip import GzipFile
from fnmatch import fnmatch
import sys

import patchtracker.Conf as Conf

if __name__ == '__main__':
  try:
    (prog,src,dst) = sys.argv
  except ValueError:
    print "usage: program <src> <dst>"
    sys.exit(1)

  inf = sys.argv[1]
  fh = None
  slist = []
  if fnmatch(inf, "*.gz"):
    fh = GzipFile(inf)
  else:
    fh = file(inf)

  # temp workaround for #538376
  if Conf.use_apt_pkg is not None:
    slist = deb822.Sources.iter_paragraphs(fh, use_apt_pkg=Conf.use_apt_pkg)
  else:
    slist = deb822.Sources.iter_paragraphs(fh)

  outf = file(sys.argv[2], "w")
  print "filtering %s for .diff.gz/.dsc files..."%(inf)
  for ent in slist:
    for k in ['Files','Checksums-Sha1','Checksums-Sha256']:
      newfiles = []
      if ent.has_key(k):
        for f in ent[k]:
          if fnmatch(f['name'], '*.diff.gz') or fnmatch(f['name'], '*.dsc'):
            newfiles.append(f)
        ent[k] = newfiles
    outf.write(str(ent))
    outf.write("\n")