c65c190b71
- 实现EPUB阅读器搜索功能及选中注释功能 - 优化CFI模块，修复代码审查发现的11个问题 - 实现大书远距目录跳转与后台补全优化方案 - 优化设置面板与章节运行时联动 - 重构及大量改进优化
40 lines
1.2 KiB
Swift
40 lines
1.2 KiB
Swift
import Foundation
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public struct RDEPUBCFIPath: Codable, Equatable, Hashable {
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public var steps: [RDEPUBCFIStep]
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public init(steps: [RDEPUBCFIStep] = []) {
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self.steps = steps
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}
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public func commonPrefix(with other: RDEPUBCFIPath) -> RDEPUBCFIPath {
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var prefix: [RDEPUBCFIStep] = []
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let upperBound = min(steps.count, other.steps.count)
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for index in 0..<upperBound {
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guard steps[index] == other.steps[index] else { break }
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prefix.append(steps[index])
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}
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return RDEPUBCFIPath(steps: prefix)
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}
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public func droppingPrefix(_ prefix: RDEPUBCFIPath) -> RDEPUBCFIPath {
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guard prefix.steps.count <= steps.count else { return self }
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let candidate = Array(steps.prefix(prefix.steps.count))
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guard candidate == prefix.steps else { return self }
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return RDEPUBCFIPath(steps: Array(steps.dropFirst(prefix.steps.count)))
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}
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}
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public struct RDEPUBCFIStep: Codable, Equatable, Hashable {
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public var index: Int
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public var idAssertion: String?
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public init(index: Int, idAssertion: String? = nil) {
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self.index = index
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self.idAssertion = idAssertion?.rd_cfiNilIfEmpty
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}
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}
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