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# Copyright (c) 2014 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 https
import utils
DEPS_FILE_URL = 'https://src.chromium.org/chrome/trunk/src/DEPS?p=%s'
class _VarImpl(object):
def __init__(self, local_scope):
self._local_scope = local_scope
def Lookup(self, var_name):
if var_name in self._local_scope.get('vars', {}):
return self._local_scope['vars'][var_name]
raise Exception('Var is not defined: %s' % var_name)
def _ParseDEPS(content):
"""Parse the DEPS file of chromium."""
local_scope = {}
var = _VarImpl(local_scope)
global_scope = {
'Var': var.Lookup,
'deps': {},
'deps_os': {},
'include_rules': [],
'skip_child_includes': [],
'hooks': [],
}
exec(content, global_scope, local_scope)
local_scope.setdefault('deps', {})
local_scope.setdefault('deps_os', {})
return (local_scope['deps'], local_scope['deps_os'])
def _GetComponentName(path):
"""Return the component name of a path."""
host_dirs = [
'src/chrome/browser/resources/',
'src/chrome/test/data/layout_tests/',
'src/media/',
'src/sdch/',
'src/testing/',
'src/third_party/WebKit/',
'src/third_party/',
'src/tools/',
'src/',
]
components_renamed = {
'webkit': 'blink',
}
for host_dir in host_dirs:
if path.startswith(host_dir):
path = path[len(host_dir):]
name = path.split('/')[0].lower()
if name in components_renamed:
return components_renamed[name].lower()
else:
return name.lower()
# Unknown path, return the whole path as component name.
return '_'.join(path.split('/'))
def _GetContentOfDEPS(chromium_revision):
return https.SendRequest(DEPS_FILE_URL % chromium_revision)
def GetChromiumComponents(chromium_revision,
os_platform='unix',
deps_file_downloader=_GetContentOfDEPS):
"""Return a list of components used by Chrome of the given revision.
Args:
chromium_revision: The revision of the Chrome build.
os_platform: The target platform of the Chrome build, eg. win, mac, etc.
deps_file_downloader: A function that takes the chromium_revision as input,
and returns the content of the DEPS file. The returned
content is assumed to be trusted input and will be
evaluated as python code.
"""
if os_platform.lower() == 'linux':
os_platform = 'unix'
# Download the content of DEPS file in chromium.
deps_content = deps_file_downloader(chromium_revision)
all_deps = {}
# Parse the content of DEPS file.
deps, deps_os = _ParseDEPS(deps_content)
all_deps.update(deps)
if os_platform is not None:
all_deps.update(deps_os.get(os_platform, {}))
# Figure out components based on the dependencies.
components = {}
for component_path in all_deps.keys():
name = _GetComponentName(component_path)
repository, revision = all_deps[component_path].split('@')
is_git_hash = utils.IsGitHash(revision)
if repository.startswith('/'):
# TODO(stgao): Use git repo after chromium moves to git.
repository = 'https://src.chromium.org/chrome%s' % repository
if is_git_hash:
repository_type = 'git'
else:
repository_type = 'svn'
if not component_path.endswith('/'):
component_path += '/'
components[component_path] = {
'path': component_path,
'name': name,
'repository': repository,
'repository_type': repository_type,
'revision': revision
}
# Add chromium as a component.
# TODO(stgao): Move to git.
components['src/'] = {
'path': 'src/',
'name': 'chromium',
'repository': 'https://src.chromium.org/chrome/trunk',
'repository_type': 'svn',
'revision': chromium_revision
}
return components
def GetChromiumComponentRange(chromium_revision1,
chromium_revision2,
os_platform='unix',
deps_file_downloader=_GetContentOfDEPS):
"""Return a list of components with their revision ranges.
Args:
chromium_revision1: The revision of a Chrome build.
chromium_revision2: The revision of another Chrome build.
os_platform: The target platform of the Chrome build, eg. win, mac, etc.
deps_file_downloader: A function that takes the chromium_revision as input,
and returns the content of the DEPS file. The returned
content is assumed to be trusted input and will be
evaluated as python code.
"""
# TODO(stgao): support git.
chromium_revision1 = int(chromium_revision1)
chromium_revision2 = int(chromium_revision2)
old_revision = str(min(chromium_revision1, chromium_revision2))
new_revision = str(max(chromium_revision1, chromium_revision2))
old_components = GetChromiumComponents(old_revision, os_platform,
deps_file_downloader)
new_components = GetChromiumComponents(new_revision, os_platform,
deps_file_downloader)
components = {}
for path in new_components.keys():
new_component = new_components[path]
old_revision = None
if path in old_components:
old_component = old_components[path]
old_revision = old_component['revision']
components[path] = {
'path': path,
'rolled': new_component['revision'] != old_revision,
'name': new_component['name'],
'old_revision': old_revision,
'new_revision': new_component['revision'],
'repository': new_component['repository'],
'repository_type': new_component['repository_type']
}
return components
if __name__ == '__main__':
import json
print json.dumps(GetChromiumComponents(284750), sort_keys=True, indent=2)
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