#!/usr/bin/python

##
## Simply reads in a changes file, and dumps a list of the files it lists
##
## If the changes filename is passed on the command line, the filenames are
## given the same parent path as the changes filename.
##
## If the contents of the changes file are given on stdin, the file pathnames
## are listed as is
##

import os.path, sys
import deb822

## changes is a file object, dir is a string
def dumpfiles(changes, dir):
    for f in changes.map["Files"].splitlines(True):
        ## skip the md5sum, size, section, etc - filename is last field
        fields = f.split()
        if len(fields) > 4:
            name = fields[4]
        else:
            continue
        sys.stdout.write(os.path.join(dir, name) + "\n")

if __name__ == '__main__':
    if len(sys.argv) >= 2:
        for arg in sys.argv[1:]:
            changes = deb822.deb822(open(arg, 'r'))
            dir = os.path.dirname(arg)
            dumpfiles(changes, os.path.dirname(arg))
    else:
        changes = deb822.deb822(sys.stdin)
        dumpfiles(changes, "")