2946cd7010
to reflect the new license. We understand that people may be surprised that we're moving the header entirely to discuss the new license. We checked this carefully with the Foundation's lawyer and we believe this is the correct approach. Essentially, all code in the project is now made available by the LLVM project under our new license, so you will see that the license headers include that license only. Some of our contributors have contributed code under our old license, and accordingly, we have retained a copy of our old license notice in the top-level files in each project and repository. llvm-svn: 351636
128 lines
4.6 KiB
Python
Executable File
128 lines
4.6 KiB
Python
Executable File
#!/usr/bin/env python
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#
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#===- clang-format-diff.py - ClangFormat Diff Reformatter ----*- python -*--===#
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#
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# Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
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# See https://llvm.org/LICENSE.txt for license information.
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# SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
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#
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#===------------------------------------------------------------------------===#
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r"""
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ClangFormat Diff Reformatter
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============================
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This script reads input from a unified diff and reformats all the changed
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lines. This is useful to reformat all the lines touched by a specific patch.
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Example usage for git/svn users:
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git diff -U0 --no-color HEAD^ | clang-format-diff.py -p1 -i
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svn diff --diff-cmd=diff -x-U0 | clang-format-diff.py -i
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"""
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from __future__ import absolute_import, division, print_function
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import argparse
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import difflib
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import re
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import subprocess
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import sys
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if sys.version_info.major >= 3:
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from io import StringIO
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else:
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from io import BytesIO as StringIO
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def main():
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parser = argparse.ArgumentParser(description=
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'Reformat changed lines in diff. Without -i '
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'option just output the diff that would be '
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'introduced.')
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parser.add_argument('-i', action='store_true', default=False,
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help='apply edits to files instead of displaying a diff')
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parser.add_argument('-p', metavar='NUM', default=0,
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help='strip the smallest prefix containing P slashes')
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parser.add_argument('-regex', metavar='PATTERN', default=None,
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help='custom pattern selecting file paths to reformat '
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'(case sensitive, overrides -iregex)')
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parser.add_argument('-iregex', metavar='PATTERN', default=
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r'.*\.(cpp|cc|c\+\+|cxx|c|cl|h|hpp|m|mm|inc|js|ts|proto'
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r'|protodevel|java)',
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help='custom pattern selecting file paths to reformat '
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'(case insensitive, overridden by -regex)')
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parser.add_argument('-sort-includes', action='store_true', default=False,
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help='let clang-format sort include blocks')
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parser.add_argument('-v', '--verbose', action='store_true',
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help='be more verbose, ineffective without -i')
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parser.add_argument('-style',
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help='formatting style to apply (LLVM, Google, Chromium, '
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'Mozilla, WebKit)')
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parser.add_argument('-binary', default='clang-format',
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help='location of binary to use for clang-format')
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args = parser.parse_args()
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# Extract changed lines for each file.
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filename = None
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lines_by_file = {}
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for line in sys.stdin:
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match = re.search('^\+\+\+\ (.*?/){%s}(\S*)' % args.p, line)
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if match:
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filename = match.group(2)
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if filename == None:
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continue
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if args.regex is not None:
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if not re.match('^%s$' % args.regex, filename):
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continue
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else:
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if not re.match('^%s$' % args.iregex, filename, re.IGNORECASE):
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continue
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match = re.search('^@@.*\+(\d+)(,(\d+))?', line)
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if match:
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start_line = int(match.group(1))
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line_count = 1
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if match.group(3):
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line_count = int(match.group(3))
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if line_count == 0:
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continue
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end_line = start_line + line_count - 1
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lines_by_file.setdefault(filename, []).extend(
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['-lines', str(start_line) + ':' + str(end_line)])
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# Reformat files containing changes in place.
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for filename, lines in lines_by_file.items():
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if args.i and args.verbose:
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print('Formatting {}'.format(filename))
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command = [args.binary, filename]
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if args.i:
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command.append('-i')
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if args.sort_includes:
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command.append('-sort-includes')
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command.extend(lines)
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if args.style:
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command.extend(['-style', args.style])
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p = subprocess.Popen(command,
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stdout=subprocess.PIPE,
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stderr=None,
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stdin=subprocess.PIPE,
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universal_newlines=True)
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stdout, stderr = p.communicate()
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if p.returncode != 0:
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sys.exit(p.returncode)
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if not args.i:
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with open(filename) as f:
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code = f.readlines()
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formatted_code = StringIO(stdout).readlines()
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diff = difflib.unified_diff(code, formatted_code,
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filename, filename,
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'(before formatting)', '(after formatting)')
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diff_string = ''.join(diff)
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if len(diff_string) > 0:
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sys.stdout.write(diff_string)
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if __name__ == '__main__':
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main()
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