blob: 50429ae24c2dc529b1aa736924c7de4d19eec9cc [file] [log] [blame]
# Copyright (c) 2013 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.
"""This module holds utilities which make writing recipes easier."""
import json
class Recipe(object):
"""Base class for all recipes.
Provides methods that are expected to be overridden by child classes. Also
provides an command-line parsing method that converts the unified command-line
interface used in depot_tools to the unified python interface defined here."""
def fetch_spec(_props):
"""Returns instructions to check out the project, conditioned on |props|."""
raise NotImplementedError
def expected_root(_props):
"""Returns the directory into which the checkout will be performed."""
raise NotImplementedError
def handle_args(self, argv):
"""Passes the command-line arguments through to the appropriate method."""
methods = {'fetch': self.fetch_spec,
'root': self.expected_root}
if len(argv) <= 1 or argv[1] not in methods:
print 'Must specify a a fetch/root action'
return 1
def looks_like_arg(arg):
return arg.startswith('--') and arg.count('=') == 1
bad_parms = [x for x in argv[2:] if not looks_like_arg(x)]
if bad_parms:
print 'Got bad arguments %s' % bad_parms
return 1
method = methods[argv[1]]
props = dict(x.split('=', 1) for x in (y.lstrip('-') for y in argv[2:]))
def output(data):