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#!/usr/bin/python3
# some example for apt_inst

import apt_pkg
import apt_inst
import sys
import os.path


def Callback(member, data):
    """ callback for debExtract """
    print("'%s','%s',%u,%u,%u,%u,%u,%u,%u"
          % (member.name, member.linkname, member.mode, member.uid,
             member.gid, member.size, member.mtime, member.major,
             member.minor))


if __name__ == "__main__":
    if len(sys.argv) < 2:
        print("need filename argumnet")
        sys.exit(1)
    file = sys.argv[1]

    print("Working on: %s" % file)
    print("Displaying data.tar.gz:")
    apt_inst.DebFile(open(file)).data.go(Callback)

    print("Now extracting the control file:")
    control = apt_inst.DebFile(open(file)).control.extractdata("control")
    sections = apt_pkg.TagSection(control)

    print("Maintainer is: ")
    print(sections["Maintainer"])

    print()
    print("DependsOn: ")
    depends = sections["Depends"]
    print(apt_pkg.parse_depends(depends))

    print("extracting archive")
    dir = "/tmp/deb"
    os.mkdir(dir)
    apt_inst.DebFile(open(file)).data.extractall(dir)

    def visit(arg, dirname, names):
        print("%s/" % dirname)
        for file in names:
            print("\t%s" % file)

    os.path.walk(dir, visit, None)