feat(epub): align text rendering with WXRead

2026-05-24 09:56:32 +08:00
parent 5125b8de51
commit a318c0e3d0
13 changed files with 1556 additions and 135 deletions
@@ -0,0 +1,58 @@
+import Foundation
+
+// MARK: - Performance Sample
+
+public struct RDEPUBTextPerformanceSample: Equatable {
+    public var chapterHref: String
+    public var renderDuration: TimeInterval
+    public var paginateDuration: TimeInterval
+    public var pageCount: Int
+    public var attributedStringLength: Int
+    public var cacheHit: Bool
+
+    public init(
+        chapterHref: String,
+        renderDuration: TimeInterval,
+        paginateDuration: TimeInterval,
+        pageCount: Int,
+        attributedStringLength: Int,
+        cacheHit: Bool
+    ) {
+        self.chapterHref = chapterHref
+        self.renderDuration = renderDuration
+        self.paginateDuration = paginateDuration
+        self.pageCount = pageCount
+        self.attributedStringLength = attributedStringLength
+        self.cacheHit = cacheHit
+    }
+}
+
+// MARK: - Performance Sampler
+
+public final class RDEPUBTextPerformanceSampler {
+    public private(set) var samples: [RDEPUBTextPerformanceSample] = []
+    public var totalBuildDuration: TimeInterval = 0
+
+    public init() {}
+
+    public func record(_ sample: RDEPUBTextPerformanceSample) {
+        samples.append(sample)
+        print("[PERF] \(sample.chapterHref): render=\(formatMS(sample.renderDuration)) paginate=\(formatMS(sample.paginateDuration)) pages=\(sample.pageCount) cache=\(sample.cacheHit ? "HIT" : "MISS")")
+    }
+
+    public func summary() -> String {
+        let totalRender = samples.reduce(0) { $0 + $1.renderDuration }
+        let totalPaginate = samples.reduce(0) { $0 + $1.paginateDuration }
+        let hitCount = samples.filter(\.cacheHit).count
+        return "[PERF] chapters=\(samples.count) render=\(formatMS(totalRender)) paginate=\(formatMS(totalPaginate)) total=\(formatMS(totalBuildDuration)) cacheHits=\(hitCount)/\(samples.count)"
+    }
+
+    public func reset() {
+        samples.removeAll()
+        totalBuildDuration = 0
+    }
+
+    private func formatMS(_ duration: TimeInterval) -> String {
+        String(format: "%.0fms", duration * 1000)
+    }
+}