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#!/usr/bin/env python
# Copyright 2016 Google Inc.
#
# Use of this source code is governed by a BSD-style license that can be
# found in the LICENSE file.
# This script will update Skia's dependencies as necessary.
# Depends on: Python and Git
# To retreive and use all optional deps:
#
# python bin/sync --deps=all
import hashlib
import os
import subprocess
import sys
HASH_FILE = '.deps_sha1'
DEPS_FLAG = '--deps='
DEPS_FILE = 'DEPS'
skia_opt_deps = [arg[len(DEPS_FLAG):] for arg in sys.argv[1:] if arg.startswith(DEPS_FLAG)]
os.chdir(os.path.join(os.path.dirname(__file__), os.pardir))
if not os.path.isfile(DEPS_FILE):
sys.stderr.write('DEPS file missing')
exit(1)
deps_hasher = hashlib.sha1()
with open(DEPS_FILE, 'r') as f:
deps_hasher.update(f.read())
deps_hasher.update(repr(skia_opt_deps))
deps_hash = deps_hasher.hexdigest()
current_deps_hash = None
if os.path.isfile(HASH_FILE):
with open(HASH_FILE, 'r') as f:
current_deps_hash = f.read().strip()
if current_deps_hash != deps_hash:
if os.path.isfile(HASH_FILE):
os.remove(HASH_FILE)
command = [sys.executable, os.path.join('tools', 'git-sync-deps')]
command.extend(skia_opt_deps)
sys.stdout.write('%r\n' % command)
sys.stdout.flush()
subprocess.check_call(command)
# Only write hash after a successful sync.
with open(HASH_FILE, 'w') as o:
o.write(deps_hash)
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