blame: source/misc/embedded_libs/fmt-11.0.2/support/check-commits

#!/usr/bin/env python3

"""Compile source on a range of commits

Usage:

  check-commits <start> <source>

"""

import docopt, os, sys, tempfile

from subprocess import check_call, check_output, run

args = docopt.docopt(__doc__)

start = args.get('<start>')

source = args.get('<source>')

cwd = os.getcwd()

with tempfile.TemporaryDirectory() as work_dir:

  check_call(['git', 'clone', 'https://github.com/fmtlib/fmt.git'],

             cwd=work_dir)

  repo_dir = os.path.join(work_dir, 'fmt')

  commits = check_output(

    ['git', 'rev-list', f'{start}..HEAD', '--abbrev-commit',

     '--', 'include', 'src'],

    text=True, cwd=repo_dir).rstrip().split('\n')

  commits.reverse()

  print('Time\tCommit')

  for commit in commits:

    check_call(['git', '-c', 'advice.detachedHead=false', 'checkout', commit],

               cwd=repo_dir)

    returncode = run(

      ['c++', '-std=c++11', '-O3', '-DNDEBUG', '-I', 'include',

       'src/format.cc', os.path.join(cwd, source)], cwd=repo_dir).returncode

    if returncode != 0:

      continue

    times = []

    for i in range(5):

      output = check_output([os.path.join(repo_dir, 'a.out')], text=True)

      times.append(float(output))

    message = check_output(['git', 'log', '-1', '--pretty=format:%s', commit],

                           cwd=repo_dir, text=True)

    print(f'{min(times)}\t{commit} {message[:40]}')

    sys.stdout.flush()