You can not select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
90 lines
3.2 KiB
90 lines
3.2 KiB
#!/usr/bin/env python3
|
|
#
|
|
# Copyright (C) 2020 The Android Open Source Project
|
|
#
|
|
# Licensed under the Apache License, Version 2.0 (the "License");
|
|
# you may not use this file except in compliance with the License.
|
|
# You may obtain a copy of the License at
|
|
#
|
|
# http://www.apache.org/licenses/LICENSE-2.0
|
|
#
|
|
# Unless required by applicable law or agreed to in writing, software
|
|
# distributed under the License is distributed on an "AS IS" BASIS,
|
|
# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
|
|
# See the License for the specific language governing permissions and
|
|
# limitations under the License.
|
|
#
|
|
|
|
# A tool that can take two logcat files from an Android device
|
|
# and produce a compact rendering of the delta between them
|
|
# Namely, it strips most of the information from the output
|
|
# (timestamp, process id, ...) that is often not critical in
|
|
# reconstructing the state of the device operation
|
|
# and then compares the component and message for each line
|
|
|
|
# It requires 'diff' and 'colordiff' to be installed
|
|
|
|
import argparse
|
|
import os.path
|
|
import re
|
|
import subprocess
|
|
import sys
|
|
import tempfile
|
|
|
|
RE_TEXT = '^[\d]+-[\d]+ [\d]+:[\d]+:[\d]+.[\d]+[ ]+[\d]+[ ]+[\d]+ [DIEWF] (?P<component>.+): (?P<message>.*)$'
|
|
|
|
# TODO(egranata): should we also support a by-component mode?
|
|
class Logcat(object):
|
|
def __init__(self, fp, keep_mismatches=False):
|
|
self.filename = fp
|
|
self.mismatches = 0
|
|
self.messages = []
|
|
self.rgx = re.compile(RE_TEXT, re.MULTILINE)
|
|
with open(fp, 'r') as f:
|
|
for line in f.readlines():
|
|
match = self.rgx.match(line)
|
|
if match:
|
|
component = match.group('component')
|
|
message = match.group('message')
|
|
self.messages.append("%s: %s" % (component, message))
|
|
elif keep_mismatches:
|
|
self.messages.append(line)
|
|
else:
|
|
self.mismatches += 1
|
|
def save(self):
|
|
# Keep this file around so we can use it by name elsewhere
|
|
with tempfile.NamedTemporaryFile(mode='w',
|
|
delete=False, prefix=os.path.basename(self.filename)) as f:
|
|
for msg in self.messages:
|
|
f.write("%s\n" % msg)
|
|
return f
|
|
|
|
def entry():
|
|
parser = argparse.ArgumentParser(description='Compare two Android logs')
|
|
parser.add_argument('files', metavar='<file>', type=str, nargs=2,
|
|
help='The two files to compare')
|
|
parser.add_argument('--keep-misformatted-lines', '-k', action='store_true', default=False)
|
|
args = parser.parse_args()
|
|
|
|
logcat1 = Logcat(args.files[0],
|
|
keep_mismatches=args.keep_misformatted_lines)
|
|
logcat2 = Logcat(args.files[1],
|
|
keep_mismatches=args.keep_misformatted_lines)
|
|
|
|
file1 = logcat1.save()
|
|
file2 = logcat2.save()
|
|
|
|
if logcat1.mismatches != 0 or logcat2.mismatches != 0:
|
|
print("%d lines were ignored; run with --keep-misformatted-lines to include them" \
|
|
% (logcat1.mismatches + logcat2.mismatches))
|
|
|
|
out = subprocess.getoutput('diff --minimal -u -W 200 "%s" "%s" | colordiff' % ( \
|
|
file1.name, file2.name))
|
|
print(out)
|
|
|
|
os.remove(file1.name)
|
|
os.remove(file2.name)
|
|
|
|
if __name__ == '__main__':
|
|
entry()
|