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authorZach White <skullydazed@gmail.com>2021-07-20 11:52:14 -0700
committerGitHub <noreply@github.com>2021-07-20 11:52:14 -0700
commit4ab8734d6edd6894757507e70264eddca5429052 (patch)
treeb43ad3f47426d3c194b05d02ae5ff34d6b0c1301 /lib/python/qmk/cli/format/c.py
parentc4db9f7fb2a359abb1db06e3d74a52dce8bdf68c (diff)
Move all our CLI file formatters to the format dir (#13296)
* move all our file formatters to the format dir * Apply suggestions from code review Co-authored-by: Erovia <Erovia@users.noreply.github.com> Co-authored-by: Erovia <Erovia@users.noreply.github.com>
Diffstat (limited to 'lib/python/qmk/cli/format/c.py')
-rw-r--r--lib/python/qmk/cli/format/c.py137
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..699de8d49c
--- /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', 'quantum/template', 'platforms/chibios')
+
+
+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 cformat -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)