60 lines
2.1 KiB
Ruby
60 lines
2.1 KiB
Ruby
# Copyright 2010 Google Inc.
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#
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# Licensed under the Apache License, Version 2.0 (the "License");
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# you may not use this file except in compliance with the License.
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# You may obtain a copy of the License at
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#
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# http://www.apache.org/licenses/LICENSE-2.0
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#
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# Unless required by applicable law or agreed to in writing, software
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# distributed under the License is distributed on an "AS IS" BASIS,
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# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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# See the License for the specific language governing permissions and
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# limitations under the License.
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require 'json'
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module Google
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class APIClient
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module Parser
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def content_type(content_type)
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@@content_type_mapping ||= {}
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@@content_type_mapping[content_type] = self
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end
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def self.match_content_type(content_type)
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# TODO(bobaman): Do this more efficiently.
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mime_type_regexp = /^([^\/]+)(?:\/([^+]+\+)?([^;]+))?(?:;.*)?$/
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if @@content_type_mapping[content_type]
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# Exact match
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return @@content_type_mapping[content_type]
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else
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media_type, extension, sub_type =
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content_type.scan(mime_type_regexp)[0]
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for pattern, parser in @@content_type_mapping
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# We want to match on subtype first
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pattern_media_type, pattern_extension, pattern_sub_type =
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pattern.scan(mime_type_regexp)[0]
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next if pattern_extension != nil
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if media_type == pattern_media_type && sub_type == pattern_sub_type
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return parser
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end
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end
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for pattern, parser in @@content_type_mapping
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# We failed to match on the subtype
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# Try to match only on the media type
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pattern_media_type, pattern_extension, pattern_sub_type =
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pattern.scan(mime_type_regexp)[0]
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next if pattern_extension != nil || pattern_sub_type != nil
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if media_type == pattern_media_type
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return parser
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end
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end
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end
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return nil
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end
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end
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end
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end
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