Commit
This commit does not belong to any branch on this repository, and may belong to a fork outside of the repository.
Open-source google-java-format-diff.py.
------------- Created by MOE: http://code.google.com/p/moe-java MOE_MIGRATED_REVID=97680935
- Loading branch information
Showing
2 changed files
with
183 additions
and
1 deletion.
There are no files selected for viewing
This file contains bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
This file contains bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,112 @@ | ||
| #!/usr/bin/env python | ||
| # | ||
| #===- google-java-format-diff.py - google-java-format Diff Reformatter -----===# | ||
| # | ||
| # The LLVM Compiler Infrastructure | ||
| # | ||
| # This file is distributed under the University of Illinois Open Source | ||
| # License. See LICENSE.TXT for details. | ||
| # | ||
| #===------------------------------------------------------------------------===# | ||
|
|
||
| r""" | ||
| google-java-format Diff Reformatter | ||
| ============================ | ||
| 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: | ||
| git diff -U0 HEAD^ | google-java-format-diff.py -p1 -i | ||
| svn diff --diff-cmd=diff -x-U0 | google-java-format-diff.py -i | ||
| """ | ||
|
|
||
| import argparse | ||
| import difflib | ||
| import re | ||
| import string | ||
| import subprocess | ||
| import StringIO | ||
| import sys | ||
|
|
||
| binary = '/usr/bin/google-java-format' | ||
|
|
||
| def main(): | ||
| parser = argparse.ArgumentParser(description= | ||
| 'Reformat changed lines in diff. Without -i ' | ||
| 'option just output the diff that would be ' | ||
| 'introduced.') | ||
| 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'.*\.java', | ||
| help='custom pattern selecting file paths to reformat ' | ||
| '(case insensitive, overridden by -regex)') | ||
| parser.add_argument('-v', '--verbose', action='store_true', | ||
| help='be more verbose, ineffective without -i') | ||
| args = parser.parse_args() | ||
|
|
||
| # Extract changed lines for each file. | ||
| filename = None | ||
| lines_by_file = {} | ||
|
|
||
| for line in sys.stdin: | ||
| match = re.search('^\+\+\+\ (.*?/){%s}(\S*)' % args.p, line) | ||
| if match: | ||
| filename = match.group(2) | ||
| if filename == None: | ||
| continue | ||
|
|
||
| if args.regex is not None: | ||
| if not re.match('^%s$' % args.regex, filename): | ||
| continue | ||
| else: | ||
| if not re.match('^%s$' % args.iregex, filename, re.IGNORECASE): | ||
| continue | ||
|
|
||
| match = re.search('^@@.*\+(\d+)(,(\d+))?', line) | ||
| if match: | ||
| start_line = int(match.group(1)) | ||
| line_count = 1 | ||
| if match.group(3): | ||
| line_count = int(match.group(3)) | ||
| if line_count == 0: | ||
| 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. | ||
| for filename, lines in lines_by_file.iteritems(): | ||
| if args.i and args.verbose: | ||
| print 'Formatting', filename | ||
| command = [binary] | ||
| if args.i: | ||
| command.append('-i') | ||
| command.extend(lines) | ||
| command.append(filename) | ||
| p = subprocess.Popen(command, stdout=subprocess.PIPE, | ||
| stderr=None, stdin=subprocess.PIPE) | ||
| stdout, stderr = p.communicate() | ||
| if p.returncode != 0: | ||
| sys.exit(p.returncode); | ||
|
|
||
| if not args.i: | ||
| with open(filename) as f: | ||
| code = f.readlines() | ||
| formatted_code = StringIO.StringIO(stdout).readlines() | ||
| diff = difflib.unified_diff(code, formatted_code, | ||
| filename, filename, | ||
| '(before formatting)', '(after formatting)') | ||
| diff_string = string.join(diff, '') | ||
| if len(diff_string) > 0: | ||
| sys.stdout.write(diff_string) | ||
|
|
||
| if __name__ == '__main__': | ||
| main() |