Python script for verifying moved files in an Android projects with variants

move-check.py

"""
Helper script for verifying moved files match variant folders in an Android project.
Useful when modularizing.
Pipe the script to a Git diff command like so:
git --no-pager diff develop --name-status -R|python move-check.py
"""

import re
import sys

def check_moved_files(diff):
    errors = 0
    match = re.search('^(R\\d{3})', diff)
    if match is not None:
        match = re.findall('/src/(\\w+?)/', diff)
        if len(match) == 2 and match[0] != match[1]:
            errors = errors + 1
            print('ERROR: Variant folder does not match. Should be %s but was %s in %s' % (match[0], match[1], diff))
    return errors

def read_stdin():
    if not sys.stdin.isatty():
        diff = sys.stdin.readlines()
        errors = 0
        for line in diff:
            errors = errors + check_moved_files(line)
    return errors

print('Checking moved files...')
errors = read_stdin()
if errors > 0:
    sys.exit('Found errors. See log above.')
else:
    print('No errors found.')