36 lines
1.3 KiB
Swift
36 lines
1.3 KiB
Swift
//
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// Copyright 2023 New Vector Ltd
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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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//
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import UniformTypeIdentifiers
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extension UTType {
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/// Creates a type based on an optional mime type, falling back to a filename when this type is missing or unknown.
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init?(mimeType: String?, fallbackFilename: String) {
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guard let mimeType, let type = UTType(mimeType: mimeType) else {
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self.init(filename: fallbackFilename)
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return
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}
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self = type
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}
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/// Creates a type based on a filename.
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private init?(filename: String) {
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let components = filename.split(separator: ".")
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guard components.count > 1, let filenameExtension = components.last else { return nil }
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self.init(filenameExtension: String(filenameExtension))
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}
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}
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