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# Copyright (c) 2011, 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.
from __future__ import with_statement
import os
import re
import sys
class CrashLogs(object):
def __init__(self, filesystem):
self._filesystem = filesystem
def find_newest_log(self, process_name, pid=None):
if sys.platform == "darwin":
return self._find_newest_log_darwin(process_name, pid)
def _log_directory_darwin(self):
log_directory = self._filesystem.expanduser("~")
log_directory = self._filesystem.join(log_directory, "Library", "Logs")
if self._filesystem.exists(self._filesystem.join(log_directory, "DiagnosticReports")):
log_directory = self._filesystem.join(log_directory, "DiagnosticReports")
else:
log_directory = self._filesystem.join(log_directory, "CrashReporter")
return log_directory
def _find_newest_log_darwin(self, process_name, pid):
def is_crash_log(fs, dirpath, basename):
return basename.startswith(process_name + "_") and basename.endswith(".crash")
log_directory = self._log_directory_darwin()
logs = self._filesystem.files_under(log_directory, file_filter=is_crash_log)
if not logs:
return None
first_line_regex = re.compile(r'^Process:\s+(?P<process_name>.*) \[(?P<pid>\d+)\]$')
for path in reversed(sorted(logs)):
try:
with self._filesystem.open_text_file_for_reading(path) as f:
first_line = f.readline()
match = first_line_regex.match(first_line)
if not match:
continue
if match.group('process_name') != process_name:
continue
if pid is not None and int(match.group('pid')) != pid:
continue
f.seek(0, os.SEEK_SET)
return f.read()
except IOError:
continue
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