Detect duplicate Java classes after scanning all JAR/WAR files in provided directory

duplicate_class.py

# Script detects duplicate Java classes after scanning all JAR/WAR files in provided directory.
# usage: python script <dir>

import zipfile
import sys
import os

if len(sys.argv) < 2:
	print("usage: python %s <dir>"%(sys.argv[0]))
	sys.exit(1)

dict = {}
problems = []

for root, dirs, files in os.walk(sys.argv[1]):
	for file in files:
		abspath = root + os.sep + file
		
		if abspath.endswith(".jar") or abspath.endswith(".war"):
			print("checking:",abspath)
			
			with zipfile.ZipFile(abspath, 'r') as zip_ref:
				for classfile in zip_ref.namelist():
					if "module-info" in classfile: continue
					
					if classfile.endswith(".class"):
						if classfile in dict: # duplicate!
							dict[classfile].append(abspath)
							problems.append(classfile)
						else:
							dict[classfile] = [abspath]
	
print()
print(str(len(problems)),"duplicate classes found")
if len(problems) > 0:
	for dup in problems:
		print(dup," found in files:")
		for e in dict[dup]:
			print("\t" + e + ",")
			
print()
print("done.")