cca/diffviewer/run.py at main · codinuum/cca · GitHub

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#!/usr/bin/env python3

import os
import sys
import re
from subprocess import call

VIEWER_APP_DIR_PAT = re.compile(r'DiffViewer-darwin-([0-9a-z]+)')
VIEWER_CMD_PATH = '/Contents/MacOS/DiffViewer'

if __name__ == '__main__':
    from argparse import ArgumentParser, ArgumentDefaultsHelpFormatter

    parser = ArgumentParser(description='run DiffViewer',
                            formatter_class=ArgumentDefaultsHelpFormatter)

    parser.add_argument('file0', type=str, metavar='ORIGINAL',
                        help='original source file (path or SHA1)')

    parser.add_argument('file1', type=str, metavar='MODIFIED',
                        help='modified source file (path or SHA1)')

    parser.add_argument('--git', dest='git_repo', default=None,
                        metavar='DIR', type=str, help='specify git repository path')

    parser.add_argument('--path0', dest='path0', default=None,
                        metavar='PATH', type=str, help='specify original file path')

    parser.add_argument('--path', dest='path', default=None,
                        metavar='PATH', type=str, help='specify modified file path')

    parser.add_argument('-c', '--cache', dest='cache', default=None,
                        metavar='DIR', type=str, help='specify cache path')

    parser.add_argument('-l', '--local-cache-name', dest='local_cache_name',
                        default=None, metavar='NAME', type=str,
                        help='specify local cache name')

    parser.add_argument('--foreground', dest='foreground', action='store_true',
                        help='do not fork')

    args = parser.parse_args()

    opt = ''
    if args.cache is not None:
        apathc = os.path.abspath(args.cache)
        opt = f' --cache {apathc}'

    if args.local_cache_name is not None:
        opt += f' --localcachename {args.local_cache_name}'

    if args.git_repo is None:
        apath0 = os.path.abspath(args.file0)
        apath1 = os.path.abspath(args.file1)
        opt += f' --file0 {apath0} --file1 {apath1}'
    elif args.path is not None:
        apathr = os.path.abspath(args.git_repo)
        opt += f' --git {apathr} --oid0 {args.file0} --oid1 {args.file1} --path {args.path}'
        if args.path0 is not None:
            opt += f' --path0 {args.path0}'
    else:
        print('(modified) file path required')
        parser.print_help()
        sys.exit(1)

    here = os.path.dirname(sys.argv[0])
    viewer_app_path = None

    for fn in os.listdir(here):
        if VIEWER_APP_DIR_PAT.match(fn):
            viewer_app_path = os.path.join(here, fn, 'DiffViewer.app')

    if viewer_app_path is None:
        print('App not found')
    else:
        if args.foreground:
            cmdp = os.path.join(viewer_app_path, VIEWER_CMD_PATH)
            cmd = f'{cmdp} --args{opt}'
        else:
            app = viewer_app_path
            cmd = f'open -n {app} --args{opt}'

        try:
            rc = call(cmd, shell=True)
        except Exception as e:
            print('failed to execute: ', e)