d7fcda345d
- Rename source module from RDReaderView to RDEpubReaderView - Move all source files from Sources/RDReaderView/ to Sources/RDEpubReaderView/ - Update podspec: RDReaderView.podspec -> RDEpubReaderView.podspec - Update Podfile, demo project, and CocoaPods config for new pod name - Delete old RDReaderView pod support files from ReadViewDemo/Pods - Add new RDEpubReaderView pod support files - Update documentation (API ref, architecture, UML, conventions, etc.) - Add FixedLayoutRotationTests - Update .gitignore: exclude .DS_Store, manual unpack backups, _ssoft-output
52 lines
1.6 KiB
Swift
52 lines
1.6 KiB
Swift
import Foundation
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public struct RDEPUBCFIResolverResult: Equatable {
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public var href: String?
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public var fileIndex: Int?
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public var chapterOffset: Int?
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public var fragmentID: String?
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public init(href: String? = nil, fileIndex: Int? = nil, chapterOffset: Int? = nil, fragmentID: String? = nil) {
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self.href = href
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self.fileIndex = fileIndex
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self.chapterOffset = chapterOffset
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self.fragmentID = fragmentID
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}
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}
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public enum RDEPUBCFIResolver {
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public static func resolve(_ cfi: RDEPUBCFI) -> RDEPUBCFIResolverResult {
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// EPUB CFI spec: package path structure is /6/2[spine]/2n[manifest-id]
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// Manifest step is always the 3rd step (index 2) if present, or the last step with an id assertion.
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let manifestStep: RDEPUBCFIStep?
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if cfi.packagePath.steps.count >= 3 {
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manifestStep = cfi.packagePath.steps[2]
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} else {
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manifestStep = cfi.packagePath.steps.last(where: { $0.idAssertion?.rd_nilIfEmpty != nil })
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}
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let href = manifestStep?.idAssertion
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// Spine step is the 2nd step (index 1) in the package path
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let fileIndex: Int?
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if cfi.packagePath.steps.count >= 2 {
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fileIndex = max((cfi.packagePath.steps[1].index / 2) - 1, 0)
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} else {
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fileIndex = nil
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}
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let fragmentID = cfi.contentPath.steps.last(where: { $0.idAssertion?.rd_nilIfEmpty != nil })?.idAssertion
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return RDEPUBCFIResolverResult(
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href: href,
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fileIndex: fileIndex,
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chapterOffset: cfi.characterOffset,
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fragmentID: fragmentID
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)
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}
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}
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