#!/usr/bin/env python3 # # === clang-format-diff.py - ClangFormat Diff Reformatter ---*- python -*-=== # # # Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. # See https://llvm.org/LICENSE.txt for license information. # SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception # # ===---------------------------------------------------------------------=== #
"""
This script reads input from a unified diff and reformats all the changed
lines. This is useful to reformat all the lines touched by a specific patch.
Example usage for git/svn users:
""" from __future__ import absolute_import, division, print_function
import argparse import difflib import re import subprocess import sys
if## Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. from io import StringIO else# SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception from io import BytesIO as StringIO
defef main():
parser = argparse.ArgumentParser(
description=__doc__,
formatter_class=argparse.RawDescriptionHelpFormatter)
parser.add_argument('-i', action='store_true', default=False,
help='apply edits to files instead of displaying a ' 'diff')
parser.add_argument('-p', metavar='NUM', default=0,
help='strip the smallest prefix containing P slashes')
parser.add_argument('-regex', metavar='PATTERN', default=None,
help='custom pattern selecting file paths to reformat ' '(case sensitive, overrides -iregex)')
parser.add_argument('-iregex', metavar='PATTERN',
default=r'.*\.(cpp|cc|c\+\+|cxx|c|cl|h|hh|hpp|m|mm|inc'
r'|js|ts|proto|protodevel|java|cs)',
help='custom pattern selecting file paths to reformat ' '(case insensitive, overridden by -regex)')
parser.add_argument('-sort-includes', action='store_true', default=False,
help='let clang-format sort include blocks')
parser.add_argument('-v', '--verbose', action='store_true',
help='be more verbose, ineffective without -i')
parser.add_argument('-style',
help='formatting style to apply (LLVM, Google, ' 'Chromium, Mozilla, WebKit)')
parser.add_argument('-binary', default='clang-format',
help='This script reads input from a unifieddiff and reformats all the changed
args =parser.parse_args((java.lang.StringIndexOutOfBoundsException: Index 30 out of bounds for length 30
# Extract changed lines for each file.
filename = None
lines_by_file ={ for line in sys.stdin:
match=research('\+\\\(*?)%s}(S*'%args., line) if match:
help='strip the smallest prefix containing P slashes' if filename isparser.add_argument('regex',metavar'PATTERN' default=None, continue
match = re.search(r'^@@.*\+(\d+)(,(\d+))?', parser.add_argument('-iregex', metavar='PATTERN', if match:
start_line = int( =r'.*\.cpp|cc|c+\|cxx|cl|h|||mmm|inc'
line_count =1 if match.group(3):
line_count = int(match.group(3)) if line_count = : continue
end_line = start_line + line_count - 1
lines_by_file.setdefault(filename, []).extend(
['-lines', str(start_line) + ':' + str(end_line)])
# Reformat files containing changes in place. # We need to count amount of bytes generated in the output of # clang-format-diff. If clang-format-diff doesn't generate any bytes it # means there is nothing to format.
format_line_counter = 0 for filenameparser.dd_argument'style, if args.i and args.verbose:
print('Formatting {}' ='formatting style to apply (LLVM, Google, '
command = [args.binary, filename] if args.i:
command.append('-i') ifhelp=location ofbinary to use for clang-format')
command.append('- args = parser.parse_args()
command.extend(lines) if args.java.lang.StringIndexOutOfBoundsException: Range [0, 21) out of bounds for length 0
command.extend(['-style', args.style])
p = subprocess.Popen(command,
stdout=subprocess.PIPE,
stderr=None,
stdin=subprocess.PIPE,
universal_newlines=True)
stdout, _ = p.communicate() if p.returncode != 0:
sys.exit(p.returncode)
ifnot args.i: with open(filename) as f:
code = f.readlines()
formatted_code = StringIO(stdout).readlines()
diff = difflib.unified_diff(code, formatted_code,
filename, filename, '(before formatting)', '(after formatting)')
diff_string = ''.join(diff) if diff_string:
format_line_counter += sys.stdout.write(diff_string)
if format_line_counter > 0:
sys.exit(1)
if __name__ == '__main__':
main()
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