54 lines
1.6 KiB
Python
54 lines
1.6 KiB
Python
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# Copyright (c) 2012 The Chromium Authors. All rights reserved.
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# Use of this source code is governed by a BSD-style license that can be
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# found in the LICENSE file.
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import os
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import sys
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import idl_schema
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import json_schema
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from model import Model
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class SchemaLoader(object):
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'''Resolves a type name into the namespace the type belongs to.
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'''
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def __init__(self, api_path):
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self._api_path = api_path
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def ResolveType(self, full_name, default_namespace):
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name_parts = full_name.rsplit('.', 1)
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if len(name_parts) == 1:
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if full_name not in default_namespace.types:
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return None
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return default_namespace
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namespace_name, type_name = name_parts
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real_name = None
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for ext in ['json', 'idl']:
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filename = '%s.%s' % (namespace_name, ext)
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if os.path.exists(filename):
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real_name = filename
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break
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if real_name is None:
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return None
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namespace = Model().AddNamespace(self.LoadSchema(real_name)[0],
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os.path.join(self._api_path, real_name))
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if type_name not in namespace.types:
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return None
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return namespace
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def LoadSchema(self, schema):
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schema_filename, schema_extension = os.path.splitext(schema)
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if schema_extension == '.json':
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api_defs = json_schema.Load(schema)
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elif schema_extension == '.idl':
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api_defs = idl_schema.Load(schema)
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else:
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sys.exit('Did not recognize file extension %s for schema %s' %
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(schema_extension, schema))
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if len(api_defs) != 1:
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sys.exit('File %s has multiple schemas. Files are only allowed to contain'
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'a single schema.' % schema)
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return api_defs
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