1 #!/usr/bin/python 2 3 # 4 # Copyright 2017, The Android Open Source Project 5 # 6 # Licensed under the Apache License, Version 2.0 (the "License"); 7 # you may not use this file except in compliance with the License. 8 # You may obtain a copy of the License at 9 # 10 # http://www.apache.org/licenses/LICENSE-2.0 11 # 12 # Unless required by applicable law or agreed to in writing, software 13 # distributed under the License is distributed on an "AS IS" BASIS, 14 # WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 15 # See the License for the specific language governing permissions and 16 # limitations under the License. 17 # 18 19 """Script that is used by developers to run style checks on Kotlin files.""" 20 21 import argparse 22 import errno 23 import os 24 import subprocess 25 import sys 26 27 MAIN_DIRECTORY = os.path.normpath(os.path.dirname(__file__)) 28 KTLINT_JAR = os.path.join(MAIN_DIRECTORY, 'ktlint-android-all.jar') 29 30 31 def main(args=None): 32 parser = argparse.ArgumentParser() 33 parser.add_argument('--file', '-f', nargs='*') 34 parser.add_argument('--format', '-F', dest='format', action='store_true') 35 parser.add_argument('--noformat', dest='format', action='store_false') 36 parser.set_defaults(format=False) 37 args = parser.parse_args() 38 ktlint_args = [f for f in args.file if f.endswith('.kt')] 39 if args.format: 40 ktlint_args += ['-F'] 41 if not ktlint_args: 42 sys.exit(0) 43 44 ktlint_env = os.environ.copy() 45 ktlint_env['JAVA_CMD'] = 'java' 46 try: 47 check = subprocess.Popen(['java', '-jar', KTLINT_JAR] + ktlint_args, 48 stdout=subprocess.PIPE, env=ktlint_env) 49 stdout, _ = check.communicate() 50 if stdout: 51 print 'prebuilts/ktlint found errors in files you changed:' 52 print stdout 53 sys.exit(1) 54 else: 55 sys.exit(0) 56 except OSError as e: 57 if e.errno == errno.ENOENT: 58 print 'Error running ktlint!' 59 sys.exit(1) 60 61 if __name__ == '__main__': 62 main() 63
