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author | Nick Brassel <nick@tzarc.org> | 2021-08-29 08:20:25 +1000 |
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committer | Nick Brassel <nick@tzarc.org> | 2021-08-29 08:20:25 +1000 |
commit | f061ca497464fe85284906fb163a33eaee7a91ef (patch) | |
tree | 33ef1bfb529aed382e8526c607c4e18717f92571 /lib/python/qmk/cli/format/c.py | |
parent | ff65185dec6f97be1eb49f17cea526a0d0bbf3d6 (diff) | |
parent | 4bad375d7c09d949a9dcdd4feba147c9c7a67ec6 (diff) |
Breaking changes develop merge to master, 2021Q3 edition. (#14196)
Diffstat (limited to 'lib/python/qmk/cli/format/c.py')
-rw-r--r-- | lib/python/qmk/cli/format/c.py | 137 |
1 files changed, 137 insertions, 0 deletions
diff --git a/lib/python/qmk/cli/format/c.py b/lib/python/qmk/cli/format/c.py new file mode 100644 index 0000000000..0160e6036f --- /dev/null +++ b/lib/python/qmk/cli/format/c.py @@ -0,0 +1,137 @@ +"""Format C code according to QMK's style. +""" +from os import path +from shutil import which +from subprocess import CalledProcessError, DEVNULL, Popen, PIPE + +from argcomplete.completers import FilesCompleter +from milc import cli + +from qmk.path import normpath +from qmk.c_parse import c_source_files + +c_file_suffixes = ('c', 'h', 'cpp') +core_dirs = ('drivers', 'quantum', 'tests', 'tmk_core', 'platforms') +ignored = ('tmk_core/protocol/usb_hid', 'platforms/chibios/boards') + + +def find_clang_format(): + """Returns the path to clang-format. + """ + for clang_version in range(20, 6, -1): + binary = f'clang-format-{clang_version}' + + if which(binary): + return binary + + return 'clang-format' + + +def find_diffs(files): + """Run clang-format and diff it against a file. + """ + found_diffs = False + + for file in files: + cli.log.debug('Checking for changes in %s', file) + clang_format = Popen([find_clang_format(), file], stdout=PIPE, stderr=PIPE, universal_newlines=True) + diff = cli.run(['diff', '-u', f'--label=a/{file}', f'--label=b/{file}', str(file), '-'], stdin=clang_format.stdout, capture_output=True) + + if diff.returncode != 0: + print(diff.stdout) + found_diffs = True + + return found_diffs + + +def cformat_run(files): + """Spawn clang-format subprocess with proper arguments + """ + # Determine which version of clang-format to use + clang_format = [find_clang_format(), '-i'] + + try: + cli.run([*clang_format, *map(str, files)], check=True, capture_output=False, stdin=DEVNULL) + cli.log.info('Successfully formatted the C code.') + return True + + except CalledProcessError as e: + cli.log.error('Error formatting C code!') + cli.log.debug('%s exited with returncode %s', e.cmd, e.returncode) + cli.log.debug('STDOUT:') + cli.log.debug(e.stdout) + cli.log.debug('STDERR:') + cli.log.debug(e.stderr) + return False + + +def filter_files(files, core_only=False): + """Yield only files to be formatted and skip the rest + """ + if core_only: + # Filter non-core files + for index, file in enumerate(files): + # The following statement checks each file to see if the file path is + # - in the core directories + # - not in the ignored directories + if not any(i in str(file) for i in core_dirs) or any(i in str(file) for i in ignored): + files[index] = None + cli.log.debug("Skipping non-core file %s, as '--core-only' is used.", file) + + for file in files: + if file and file.name.split('.')[-1] in c_file_suffixes: + yield file + else: + cli.log.debug('Skipping file %s', file) + + +@cli.argument('-n', '--dry-run', arg_only=True, action='store_true', help="Flag only, don't automatically format.") +@cli.argument('-b', '--base-branch', default='origin/master', help='Branch to compare to diffs to.') +@cli.argument('-a', '--all-files', arg_only=True, action='store_true', help='Format all core files.') +@cli.argument('--core-only', arg_only=True, action='store_true', help='Format core files only.') +@cli.argument('files', nargs='*', arg_only=True, type=normpath, completer=FilesCompleter('.c'), help='Filename(s) to format.') +@cli.subcommand("Format C code according to QMK's style.", hidden=False if cli.config.user.developer else True) +def format_c(cli): + """Format C code according to QMK's style. + """ + # Find the list of files to format + if cli.args.files: + files = list(filter_files(cli.args.files, cli.args.core_only)) + + if not files: + cli.log.error('No C files in filelist: %s', ', '.join(map(str, cli.args.files))) + exit(0) + + if cli.args.all_files: + cli.log.warning('Filenames passed with -a, only formatting: %s', ','.join(map(str, files))) + + elif cli.args.all_files: + all_files = c_source_files(core_dirs) + files = list(filter_files(all_files, True)) + + else: + git_diff_cmd = ['git', 'diff', '--name-only', cli.args.base_branch, *core_dirs] + git_diff = cli.run(git_diff_cmd, stdin=DEVNULL) + + if git_diff.returncode != 0: + cli.log.error("Error running %s", git_diff_cmd) + print(git_diff.stderr) + return git_diff.returncode + + files = [] + + for file in git_diff.stdout.strip().split('\n'): + if not any([file.startswith(ignore) for ignore in ignored]): + if path.exists(file) and file.split('.')[-1] in c_file_suffixes: + files.append(file) + + # Sanity check + if not files: + cli.log.error('No changed files detected. Use "qmk format-c -a" to format all core files') + return False + + # Run clang-format on the files we've found + if cli.args.dry_run: + return not find_diffs(files) + else: + return cformat_run(files) |