blob: 358381f847f4766c0fbbe57da4e0db205963ef05 [file] [log] [blame]
# Copyright (c) 2012 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 os
import re
import sys
import idl_schema
import json_schema
from model import Model, UnixName
class SchemaLoader(object):
'''Resolves a type name into the namespace the type belongs to.
- |display_path| path to the directory with the API header files, intended for
use with the Model.
- |real_path| path to the directory with the API header files, used for file
def __init__(self, display_path, real_path):
self._display_path = display_path
self._real_path = real_path
def ResolveType(self, full_name, default_namespace):
name_parts = full_name.rsplit('.', 1)
if len(name_parts) == 1:
if full_name not in default_namespace.types:
return None
return default_namespace
namespace_name, type_name = name_parts
real_name = None
# Try to find the file defining the namespace. Eg. for
# nameSpace.sub_name_space.Type' the following heuristics looks for:
# 1. name_space_sub_name_space.json,
# 2. name_space_sub_name_space.idl.
for ext in ['json', 'idl']:
basename = UnixName(namespace_name)
filename = '%s.%s' % (basename, ext)
filepath = os.path.join(self._real_path, filename);
if os.path.exists(filepath):
real_name = filename
if real_name is None:
return None
namespace = Model().AddNamespace(
os.path.join(self._display_path, real_name))
if type_name not in namespace.types:
return None
return namespace
def LoadSchema(self, schema):
'''Load a schema definition. The schema parameter must be a file name
without any path component - the file is loaded from the path defined by
the real_path argument passed to the constructor.'''
schema_filename, schema_extension = os.path.splitext(schema)
schema_path = os.path.join(self._real_path, schema);
if schema_extension == '.json':
api_defs = json_schema.Load(schema_path)
elif schema_extension == '.idl':
api_defs = idl_schema.Load(schema_path)
sys.exit('Did not recognize file extension %s for schema %s' %
(schema_extension, schema))
return api_defs