Grep in classpath

unpack-cp.py

#!/usr/bin/env python

# unpack-cp.py

# Takes cp as argument, or reads from stdin. cp should be a colon separated
# list of jars. Extracts all jars to temp directory and prints out the name of
# the temp directory. The user is expected to delete the directory when it
# is not needed anymore.
#
# Useful for grepping for code and checking which files are visible to the JVM.
#
# Example:
#
# clojure -Spath | ./unpack-cp.py

from __future__ import print_function

import sys, tempfile, zipfile, os
if len(sys.argv) > 1:
    inf = open(sys.argv[1])
else:
    inf = sys.stdin

data = inf.read().rstrip()

dirpath = tempfile.mkdtemp()

for f in data.split(":"):
    if not os.path.isfile(f):
        print("Not a file, skipping", f)
        continue

    if os.path.isdir(f):
        print("Dir, skipping", f)
        continue

    zip_ref = zipfile.ZipFile(f, 'r')
    zip_ref.extractall(dirpath)
    zip_ref.close()

print(dirpath)