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#!/usr/bin/env python
# Copyright 2015 The Chromium Authors. All rights reserved.
# Use of this source code is governed by a BSD-style license that can be
# found in the LICENSE file.
import codecs
import optparse
import os
import re
import subprocess
import sys
_CATAPULT_PATH = os.path.abspath(
os.path.join(os.path.dirname(__file__), os.path.pardir, os.path.pardir))
sys.path.append(os.path.join(_CATAPULT_PATH, 'tracing'))
from tracing_build import vulcanize_trace_viewer
SYSTRACE_TRACE_VIEWER_HTML_FILE = os.path.join(
os.path.abspath(os.path.dirname(__file__)),
'systrace_trace_viewer.html')
CATAPULT_REV_ = 'CATAPULT_REV'
NO_AUTO_UPDATE_ = 'NO_AUTO_UPDATE'
def create_catapult_rev_str_(revision):
return '<!--' + CATAPULT_REV_ + '=' + str(revision) + '-->'
def get_catapult_rev_in_file_(html_file):
assert os.path.exists(html_file)
rev = ''
with open(html_file, 'r') as f:
lines = f.readlines()
for line in lines[::-1]:
if CATAPULT_REV_ in line:
tokens = line.split(CATAPULT_REV_)
rev = re.sub(r'[=\->]', '', tokens[1]).strip()
break
return rev
def get_catapult_rev_in_git_():
try:
catapult_rev = subprocess.check_output(
['git', 'rev-parse', 'HEAD'],
shell=True, # Needed by Windows
cwd=os.path.dirname(os.path.abspath(__file__))).strip()
except (subprocess.CalledProcessError, OSError):
catapult_rev = ''
if not catapult_rev:
return ''
else:
return catapult_rev
def update(no_auto_update=False, no_min=False, force_update=False):
"""Update the systrace trace viewer html file.
When the html file exists, do not update the file if
1. the revision is NO_AUTO_UPDATE_;
2. or the revision is not changed.
Args:
no_auto_update: If true, force updating the file with revision
NO_AUTO_UPDATE_. Future updates will be skipped unless this
argument is true again.
no_min: If true, skip minification when updating the file.
force_update: If true, update the systrace trace viewer file no matter
what.
"""
new_rev = None
if not force_update:
if no_auto_update:
new_rev = NO_AUTO_UPDATE_
else:
new_rev = get_catapult_rev_in_git_()
if not new_rev:
return
if os.path.exists(SYSTRACE_TRACE_VIEWER_HTML_FILE):
rev_in_file = get_catapult_rev_in_file_(SYSTRACE_TRACE_VIEWER_HTML_FILE)
if rev_in_file == NO_AUTO_UPDATE_ or rev_in_file == new_rev:
return
if force_update and not new_rev:
new_rev = "none"
print 'Generating viewer file %s with revision %s.' % (
SYSTRACE_TRACE_VIEWER_HTML_FILE, new_rev)
# Generate the vulcanized result.
with codecs.open(SYSTRACE_TRACE_VIEWER_HTML_FILE,
encoding='utf-8', mode='w') as f:
vulcanize_trace_viewer.WriteTraceViewer(
f,
config_name='full',
minify=(not no_min),
output_html_head_and_body=False)
if not force_update:
f.write(create_catapult_rev_str_(new_rev))
def main():
parser = optparse.OptionParser()
parser.add_option('--no-auto-update', dest='no_auto_update',
default=False, action='store_true', help='force update the '
'systrace trace viewer html file. Future auto updates will '
'be skipped unless this flag is specified again.')
parser.add_option('--no-min', dest='no_min', default=False,
action='store_true', help='skip minification')
# pylint: disable=unused-variable
options, unused_args = parser.parse_args(sys.argv[1:])
update(no_auto_update=options.no_auto_update, no_min=options.no_min)
if __name__ == '__main__':
main()
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