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Diffstat (limited to 'third_party/aom/tools/wrap-commit-msg.py')
-rwxr-xr-x | third_party/aom/tools/wrap-commit-msg.py | 72 |
1 files changed, 72 insertions, 0 deletions
diff --git a/third_party/aom/tools/wrap-commit-msg.py b/third_party/aom/tools/wrap-commit-msg.py new file mode 100755 index 0000000000..c51ed093d3 --- /dev/null +++ b/third_party/aom/tools/wrap-commit-msg.py @@ -0,0 +1,72 @@ +#!/usr/bin/env python3 +## +## Copyright (c) 2016, Alliance for Open Media. All rights reserved +## +## This source code is subject to the terms of the BSD 2 Clause License and +## the Alliance for Open Media Patent License 1.0. If the BSD 2 Clause License +## was not distributed with this source code in the LICENSE file, you can +## obtain it at www.aomedia.org/license/software. If the Alliance for Open +## Media Patent License 1.0 was not distributed with this source code in the +## PATENTS file, you can obtain it at www.aomedia.org/license/patent. +## +"""Wraps paragraphs of text, preserving manual formatting + +This is like fold(1), but has the special convention of not modifying lines +that start with whitespace. This allows you to intersperse blocks with +special formatting, like code blocks, with written prose. The prose will +be wordwrapped, and the manual formatting will be preserved. + + * This won't handle the case of a bulleted (or ordered) list specially, so + manual wrapping must be done. + +Occasionally it's useful to put something with explicit formatting that +doesn't look at all like a block of text inline. + + indicator = has_leading_whitespace(line); + if (indicator) + preserve_formatting(line); + +The intent is that this docstring would make it through the transform +and still be legible and presented as it is in the source. If additional +cases are handled, update this doc to describe the effect. +""" + +__author__ = "jkoleszar@google.com" +import textwrap +import sys + +def wrap(text): + if text: + return textwrap.fill(text, break_long_words=False) + '\n' + return "" + + +def main(fileobj): + text = "" + output = "" + while True: + line = fileobj.readline() + if not line: + break + + if line.lstrip() == line: + text += line + else: + output += wrap(text) + text="" + output += line + output += wrap(text) + + # Replace the file or write to stdout. + if fileobj == sys.stdin: + fileobj = sys.stdout + else: + fileobj.seek(0) + fileobj.truncate(0) + fileobj.write(output) + +if __name__ == "__main__": + if len(sys.argv) > 1: + main(open(sys.argv[1], "r+")) + else: + main(sys.stdin) |