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#!/usr/bin/env python3

from __future__ import annotations

import argparse

import concurrent.futures

import json

import os.path

import subprocess

import sys

EXCLUDED = frozenset((

('windows-latest', 'docker'),

('windows-latest', 'docker_image'),

('windows-latest', 'lua'),

('windows-latest', 'swift'),

))

def _always_run() -> frozenset[str]:

ret = ['.github/workflows/languages.yaml', 'testing/languages']

ret.extend(

os.path.join('pre_commit/resources', fname)

for fname in os.listdir('pre_commit/resources')

)

return frozenset(ret)

def _lang_files(lang: str) -> frozenset[str]:

prog = f'''\

import json

import os.path

import sys

import pre_commit.languages.{lang}

import tests.languages.{lang}_test

modules = sorted(

os.path.relpath(v.__file__)

for k, v in sys.modules.items()

if k.startswith(('pre_commit.', 'tests.', 'testing.'))

)

print(json.dumps(modules))

'''

out = json.loads(subprocess.check_output((sys.executable, '-c', prog)))

return frozenset(out)

def main() -> int:

parser = argparse.ArgumentParser()

parser.add_argument('--all', action='store_true')

args = parser.parse_args()

langs = [

os.path.splitext(fname)[0]

for fname in sorted(os.listdir('pre_commit/languages'))

if fname.endswith('.py') and fname != '__init__.py'

]

triggers_all = _always_run()

for fname in triggers_all:

assert os.path.exists(fname), fname

if not args.all:

with concurrent.futures.ThreadPoolExecutor(os.cpu_count()) as exe:

by_lang = {

lang: files | triggers_all

for lang, files in zip(langs, exe.map(_lang_files, langs))

}

diff_cmd = ('git', 'diff', '--name-only', 'origin/main...HEAD')

files = set(subprocess.check_output(diff_cmd).decode().splitlines())

langs = [

lang

for lang, lang_files in by_lang.items()

if lang_files & files

]

matched = [

{'os': os, 'language': lang}

for os in ('windows-latest', 'ubuntu-latest')

for lang in langs

if (os, lang) not in EXCLUDED

]

with open(os.environ['GITHUB_OUTPUT'], 'a') as f:

f.write(f'languages={json.dumps(matched)}\n')

return 0

if __name__ == '__main__':

raise SystemExit(main())

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PL/B Language Development and Support

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