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166 lines
6.1 KiB
166 lines
6.1 KiB
#!/usr/bin/env python3 |
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# |
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#===- clang-format-diff.py - ClangFormat Diff Reformatter ----*- python -*--===# |
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# |
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# The LLVM Compiler Infrastructure |
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# |
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# This file is distributed under the University of Illinois Open Source |
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# License. |
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# |
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# ============================================================ |
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# |
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# University of Illinois/NCSA |
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# Open Source License |
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# |
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# Copyright (c) 2007-2015 University of Illinois at Urbana-Champaign. |
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# All rights reserved. |
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# |
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# Developed by: |
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# |
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# LLVM Team |
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# |
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# University of Illinois at Urbana-Champaign |
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# |
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# http://llvm.org |
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# |
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# Permission is hereby granted, free of charge, to any person obtaining a copy of |
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# this software and associated documentation files (the "Software"), to deal with |
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# the Software without restriction, including without limitation the rights to |
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# use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies |
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# of the Software, and to permit persons to whom the Software is furnished to do |
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# so, subject to the following conditions: |
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# |
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# * Redistributions of source code must retain the above copyright notice, |
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# this list of conditions and the following disclaimers. |
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# |
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# * Redistributions in binary form must reproduce the above copyright notice, |
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# this list of conditions and the following disclaimers in the |
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# documentation and/or other materials provided with the distribution. |
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# |
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# * Neither the names of the LLVM Team, University of Illinois at |
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# Urbana-Champaign, nor the names of its contributors may be used to |
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# endorse or promote products derived from this Software without specific |
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# prior written permission. |
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# |
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# THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR |
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# IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS |
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# FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE |
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# CONTRIBUTORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER |
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# LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, |
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# OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS WITH THE |
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# SOFTWARE. |
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# |
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# ============================================================ |
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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 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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import argparse |
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import difflib |
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import io |
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import re |
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import subprocess |
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import sys |
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# Change this to the full path if clang-format is not on the path. |
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binary = 'clang-format' |
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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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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(r'^\+\+\+\ (.*?/){%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 is 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(r'^@@.*\+(\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 = [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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command.extend(['-style=file', '-fallback-style=none']) |
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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, encoding="utf8") as f: |
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code = f.readlines() |
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formatted_code = io.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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