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# Copyright (C) 2009, Google Inc. All rights reserved.
#
# Redistribution and use in source and binary forms, with or without
# modification, are permitted provided that the following conditions are
# met:
#
# * Redistributions of source code must retain the above copyright
# notice, this list of conditions and the following disclaimer.
# * Redistributions in binary form must reproduce the above
# copyright notice, this list of conditions and the following disclaimer
# in the documentation and/or other materials provided with the
# distribution.
# * Neither the name of Google Inc. nor the names of its
# contributors may be used to endorse or promote products derived from
# this software without specific prior written permission.
#
# THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
# "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
# LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
# A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
# OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
# SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
# LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
# DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
# THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
# (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
# OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
#
# WebKit's Python module for parsing and modifying ChangeLog files
import fileinput # inplace file editing for set_reviewer_in_changelog
import re
import textwrap
def view_source_url(revision_number):
# FIMXE: This doesn't really belong in this file, but we don't have a
# better home for it yet.
# Maybe eventually a webkit_config.py?
return "http://trac.webkit.org/changeset/%s" % revision_number
class ChangeLog:
def __init__(self, path):
self.path = path
_changelog_indent = " " * 8
# e.g. 2009-06-03 Eric Seidel <eric@webkit.org>
date_line_regexp = re.compile('^(\d{4}-\d{2}-\d{2})' # Consume the date.
+ '\s+(.+)\s+' # Consume the name.
+ '<([^<>]+)>$') # And the email address.
@staticmethod
def _parse_latest_entry_from_file(changelog_file):
entry_lines = []
# The first line should be a date line.
first_line = changelog_file.readline()
if not ChangeLog.date_line_regexp.match(first_line):
return None
entry_lines.append(first_line)
for line in changelog_file:
# If we've hit the next entry, return.
if ChangeLog.date_line_regexp.match(line):
# Remove the extra newline at the end
return ''.join(entry_lines[:-1])
entry_lines.append(line)
return None # We never found a date line!
def latest_entry(self):
changelog_file = open(self.path)
try:
return self._parse_latest_entry_from_file(changelog_file)
finally:
changelog_file.close()
# _wrap_line and _wrap_lines exist to work around
# http://bugs.python.org/issue1859
def _wrap_line(self, line):
return textwrap.fill(line,
width=70,
initial_indent=self._changelog_indent,
# Don't break urls which may be longer than width.
break_long_words=False,
subsequent_indent=self._changelog_indent)
# Workaround as suggested by guido in
# http://bugs.python.org/issue1859#msg60040
def _wrap_lines(self, message):
lines = [self._wrap_line(line) for line in message.splitlines()]
return "\n".join(lines)
# This probably does not belong in changelogs.py
def _message_for_revert(self, revision, reason, bug_url):
message = "No review, rolling out r%s.\n" % revision
message += "%s\n" % view_source_url(revision)
if bug_url:
message += "%s\n" % bug_url
# Add an extra new line after the rollout links, before any reason.
message += "\n"
if reason:
message += "%s\n\n" % reason
return self._wrap_lines(message)
def update_for_revert(self, revision, reason, bug_url=None):
reviewed_by_regexp = re.compile(
"%sReviewed by NOBODY \(OOPS!\)\." % self._changelog_indent)
removing_boilerplate = False
# inplace=1 creates a backup file and re-directs stdout to the file
for line in fileinput.FileInput(self.path, inplace=1):
if reviewed_by_regexp.search(line):
message_lines = self._message_for_revert(revision,
reason,
bug_url)
print reviewed_by_regexp.sub(message_lines, line),
# Remove all the ChangeLog boilerplate between the Reviewed by
# line and the first changed file.
removing_boilerplate = True
elif removing_boilerplate:
if line.find('*') >= 0: # each changed file is preceded by a *
removing_boilerplate = False
if not removing_boilerplate:
print line,
def set_reviewer(self, reviewer):
# inplace=1 creates a backup file and re-directs stdout to the file
for line in fileinput.FileInput(self.path, inplace=1):
# Trailing comma suppresses printing newline
print line.replace("NOBODY (OOPS!)", reviewer.encode("utf-8")),
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