qrun.py

#!/usr/bin/env python
import argparse
import os
import subprocess
import sys

parser = argparse.ArgumentParser(description='This sctipt quickly run a c++ program.')
parser.add_argument('file_path', help='path to c++ program')
# parser.add_argument('-i', metavar='input_file',
#                     default=None, help='path to standard input file')
parser.add_argument('-fc', action='store_true', help='force to compile')

compile_cmd = 'c++ -std=c++11 -o a.out {}'
ts_dir = os.path.expanduser("~/.qr_timestamps/")

args = parser.parse_args()
home = os.path.expanduser("~")
file_path = args.file_path
ts_name = os.path.relpath(file_path, home)
ts_name = ts_name.replace(os.sep, "_") + ".ts"
ts_path = os.path.join(ts_dir, ts_name)

if args.fc or not os.path.exists(ts_path) or os.stat(ts_path).st_mtime < os.stat(file_path).st_mtime:
    # Compile
    retcode = subprocess.call(compile_cmd.format(file_path), shell=True,
                              stdout=sys.stdout, stderr=sys.stderr)

    if retcode != 0:
        print('Compilng was failed. return code:', retcode)
        sys.exit(retcode)

    # Update timestamp
    if not os.path.exists(ts_path):
        if not os.path.exists(ts_dir):
            os.makedirs(ts_dir)
        # Make .ts file
        with open(ts_path, 'w'):
            pass
    os.utime(ts_path, None)

# Run
sys.stderr.write('Runing\n')
sys.stderr.flush()
retcode = subprocess.call("." + os.sep + "a.out", shell=True, stdin=sys.stdin,
                          stdout=sys.stdout, stderr=sys.stderr)

if retcode != 0:
    print('Running program was failed. return code:', retcode)