#!/usr/bin/env python

import sys
import itertools
import subprocess
import re
import pprint
import json

def ldd(executable):
    p = subprocess.Popen(["ldd", executable], stdout = subprocess.PIPE)
    values = p.stdout.read()
    libs = [i.split("\t")[1] for i in values.split("\n")[:-1]]
    return libs

def parse(libs):
    pathes = []
    print("\n\n\nLinker defined such shared libraries:")
    for lib in libs:
        print(lib)
        try:
            match = re.search('=>(.*)\(', lib)
            path = match.group(1).strip()
        except Exception, e:
            print("Failed to parse: {0} {1}".format(lib, e))
        else:
            pathes.append(path)
    #print(pathes)
    return pathes

def dependence(pathes):
    packages = {}
    for path in pathes:
        p = subprocess.Popen(["rpm", "-q", "--whatprovides", path], stdout = subprocess.PIPE)
        package = p.stdout.read().strip()
        if package == "no package provides":
            print("{0} - no such package".format(path))
        packages[path] = package
    return packages

def packages_only(packages):
    print("\n\n\nList of unique packages:")
    unique = sorted(set(packages.values()))
    pprint.pprint(unique)
    return unique

if __name__ == "__main__":
    libs = ldd(sys.argv[1])
    pathes = parse(libs)
    packages = dependence(pathes)
    unique = packages_only(packages)
    with open(sys.argv[1].split('/')[-1],"w") as f:
        json.dump(unique, f, indent = 4)