work in progress - script to follow dependencies for libraries

recursive dep resolver

#!/usr/bin/env python
import os
import re
import sys
import subprocess

READELF = "/usr/bin/readelf"
basedir = ""
libpattern = re.compile("\[([^\s]*)\]")
alllibs = list()
seenlibs = list()

def usage():
    print("Usage: {} <path_to_lib>").format(os.path.basename(sys.argv[0]))
    sys.exit(0)


def finddeps(libname):
    # print("Looking in {} for the deps for {}").format(basedir, libname)
    f = basedir + "/" + libname
    if not os.path.exists(f):
        seenlibs.append(libname)
        return
    mydeps = list()
    output = subprocess.check_output([READELF, "-d", f])
    wurds = output.split()
    for wurd in wurds:
        m = libpattern.search(wurd)
            # alllibs.append(m.group(1))
            mydeps.append(m.group(1))

    sys.stdout.write(libname)
    sys.stdout.write(': ')
    print(mydeps)
    print("\n")
    seenlibs.append(libname)
    for lib in mydeps:
        if lib not in seenlibs:
            finddeps(lib)


if __name__ == "__main__":

    if len(sys.argv) != 2:
        usage()

    if not os.path.exists(sys.argv[1]):
        print("Can't access {}. You sure that's correct?").format(sys.argv[1])
        sys.exit(0)

    basedir = os.path.dirname(sys.argv[1])
    libname = os.path.basename(sys.argv[1])

    finddeps(libname)