Extracts jar class files for android from aar files.

extract_classes.py

#!/usr/bin/python

import sys, os
from os.path import isdir
import glob
from shutil import copy
import zipfile

source_dir = ''
destination_dir = ''

def print_usage():
    print "Usage:"
    print "./extract_classes -src /path/to/android/sdk -des /my/dir"

def relative_to_absolute(dir):
    if dir[0] == '.':
        return os.path.join(os.getcwd(),dir)
    return dir

def check_cmd_arguments(args):
    if len(args) != 5:
        print "To few or many argmuents given:"
        print_usage()
        sys.exit(1)
    if not((args[1] == '-src' and args[3] == '-des') or \
           (args[3] == '-src' and args[1] == '-des')):
        print "Wrong options given!"
        print_usage()
        sys.exit(1)
    global source_dir
    global destination_dir
    if args[1] == '-src':
        source_dir = relative_to_absolute(args[2])
        destination_dir = relative_to_absolute(args[4])
    else :
        source_dir = relative_to_absolute(args[4])
        destination_dir = relative_to_absolute(args[2])
    if not(os.path.isdir(source_dir)) or not(os.path.isdir(destination_dir)):
        print "Wrong path specified!"
        print_usage()
        sys.exit(1)


def extract_class(root_dir):
    for dirpath, dir_names, filenames in os.walk(root_dir):
        # print dirpath
        os.chdir(dirpath)
        jars = glob.glob("*.jar")
        if jars:
            for jar in jars:
                if "sources" not in jar and "javadoc" not in jar:
                    new_file = os.path.join(destination_dir,jar)
                    copy(jar,new_file)
        aars = glob.glob("*.aar")
        if aars :
            print dirpath
            for aar in aars:
                #os.mkdir(os.path.splitext(aar)[0])
                dir_name = os.path.splitext(aar)[0]
                new_dir = os.path.join(dirpath, dir_name)
                zipfile.ZipFile(os.path.join(dirpath, aar)).extractall(os.path.join(dirpath, dir_name))
                os.chdir(new_dir)
                jars = glob.glob("*.jar")
                for jar in jars:
                    new_file = os.path.join(destination_dir,dir_name + ".jar")
                    copy(jar,new_file)

check_cmd_arguments(sys.argv)
extract_class(source_dir)