43 lines
1.7 KiB
Swift
43 lines
1.7 KiB
Swift
//
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// Copyright 2022 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 SwiftUI
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extension String {
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/// Returns the string as an `AttributedString` with the specified character tinted in a different color.
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/// - Parameters:
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/// - character: The character to be tinted.
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/// - color: The color to tint the character. Defaults to the accent color.
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/// - Returns: An `AttributedString`.
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func tinting(_ character: Character, color: Color = .accentColor) -> AttributedString {
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var string = AttributedString(self)
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let characterView = string.characters
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for index in characterView.indices where characterView[index] == character {
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string[index..<characterView.index(after: index)].foregroundColor = color
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}
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return string
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}
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/// Whether or not the string is a Matrix user ID.
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var isMatrixUserID: Bool {
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let range = NSRange(location: 0, length: count)
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let detector = try? NSRegularExpression(pattern: MatrixEntityRegex.userId.rawValue, options: .caseInsensitive)
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return detector?.numberOfMatches(in: self, range: range) ?? 0 == 1
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}
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}
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