mirror of
https://github.com/brl/mutter.git
synced 2024-09-17 13:05:51 -04:00
6960b9b45a
The docu for `Popen.wait()` says:
> This will deadlock when using stdout=PIPE and/or stderr=PIPE and
> the child process generates enough output to a pipe such that it
> blocks waiting for the OS pipe buffer to accept more data.
Fixes 3caa5fea3c
Part-of: <https://gitlab.gnome.org/GNOME/mutter/-/merge_requests/1971>
139 lines
4.5 KiB
Python
Executable File
139 lines
4.5 KiB
Python
Executable File
#!/bin/env python3
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import argparse
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import os
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import re
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import subprocess
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import sys
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import tempfile
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# Path relative to this script
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uncrustify_cfg = 'tools/uncrustify.cfg'
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def run_diff(sha):
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proc = subprocess.Popen(["git", "diff", "-U0", "--function-context", sha, "HEAD"], stdout=subprocess.PIPE, stderr=subprocess.STDOUT)
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files = proc.stdout.read().strip().decode('utf-8')
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return files.split('\n')
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def find_chunks(diff):
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file_entry_re = re.compile('^\+\+\+ b/(.*)$')
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diff_chunk_re = re.compile('^@@ -\d+,\d+ \+(\d+),(\d+)')
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file = None
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chunks = []
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for line in diff:
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match = file_entry_re.match(line)
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if match:
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file = match.group(1)
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match = diff_chunk_re.match(line)
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if match:
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start = int(match.group(1))
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len = int(match.group(2))
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end = start + len
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if len > 0 and (file.endswith('.c') or file.endswith('.h') or file.endswith('.vala')):
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chunks.append({ 'file': file, 'start': start, 'end': end })
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return chunks
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def reformat_chunks(chunks, rewrite):
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# Creates temp file with INDENT-ON/OFF comments
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def create_temp_file(file, start, end):
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with open(file) as f:
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tmp = tempfile.NamedTemporaryFile()
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tmp.write(b'/** *INDENT-OFF* **/\n')
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for i, line in enumerate(f):
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if i == start - 2:
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tmp.write(b'/** *INDENT-ON* **/\n')
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tmp.write(bytes(line, 'utf-8'))
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if i == end - 2:
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tmp.write(b'/** *INDENT-OFF* **/\n')
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tmp.seek(0)
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return tmp
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# Removes uncrustify INDENT-ON/OFF helper comments
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def remove_indent_comments(output):
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tmp = tempfile.NamedTemporaryFile()
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for line in output:
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if line != b'/** *INDENT-OFF* **/\n' and line != b'/** *INDENT-ON* **/\n':
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tmp.write(line)
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tmp.seek(0)
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return tmp
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changed = None
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for chunk in chunks:
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# Add INDENT-ON/OFF comments
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tmp = create_temp_file(chunk['file'], chunk['start'], chunk['end'])
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# uncrustify chunk
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proc = subprocess.Popen(["uncrustify", "-c", uncrustify_cfg, "-f", tmp.name], stdout=subprocess.PIPE)
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reindented = proc.stdout.readlines()
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proc.wait()
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if proc.returncode != 0:
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continue
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tmp.close()
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# Remove INDENT-ON/OFF comments
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formatted = remove_indent_comments(reindented)
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if dry_run is True:
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# Show changes
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proc = subprocess.Popen(["diff", "-up", "--color=always", chunk['file'], formatted.name], stdout=subprocess.PIPE, stderr=subprocess.STDOUT)
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diff = proc.stdout.read().decode('utf-8')
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if diff != '':
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output = re.sub('\t', '↦\t', diff)
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print(output)
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changed = True
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else:
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# Apply changes
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diff = subprocess.Popen(["diff", "-up", chunk['file'], formatted.name], stdout=subprocess.PIPE, stderr=subprocess.STDOUT)
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patch = subprocess.Popen(["patch", chunk['file']], stdin=diff.stdout)
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diff.stdout.close()
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patch.communicate()
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formatted.close()
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return changed
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parser = argparse.ArgumentParser(description='Check code style.')
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parser.add_argument('--sha', metavar='SHA', type=str,
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help='SHA for the commit to compare HEAD with')
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parser.add_argument('--dry-run', '-d', type=bool,
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action=argparse.BooleanOptionalAction,
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help='Only print changes to stdout, do not change code')
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parser.add_argument('--rewrite', '-r', type=bool,
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action=argparse.BooleanOptionalAction,
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help='Whether to amend the result to the last commit (e.g. \'git rebase --exec "%(prog)s -r"\')')
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# Change CWD to script location, necessary for always locating the configuration file
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os.chdir(os.path.dirname(os.path.abspath(sys.argv[0])))
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args = parser.parse_args()
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sha = args.sha or 'HEAD^'
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rewrite = args.rewrite
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dry_run = args.dry_run
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diff = run_diff(sha)
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chunks = find_chunks(diff)
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changed = reformat_chunks(chunks, rewrite)
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if dry_run is not True and rewrite is True:
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proc = subprocess.Popen(["git", "commit", "--all", "--amend", "-C", "HEAD"], stdout=subprocess.DEVNULL)
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os._exit(0)
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elif dry_run is True and changed is True:
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print ("\nIssue the following command in your local tree to apply the suggested changes (needs uncrustify installed):\n\n $ git rebase origin/main --exec \"./check-style.py -r\" \n")
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os._exit(-1)
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os._exit(0)
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