feat: open-source 小浣熊阅读 for iOS

2026-10-20 19:21:22 +08:00 · 2026-10-14 11:37:36 +08:00
commit ffc9e9d91d
193 changed files with 41382 additions and 0 deletions
@@ -0,0 +1,66 @@
+import CryptoKit
+import Foundation
+
+public protocol BookChapterRepository: Sendable {
+    func load(bookURL: String) async throws -> [BookChapter]
+    func save(_ chapters: [BookChapter], bookURL: String) async throws
+    func remove(bookURL: String) async throws
+}
+
+public actor FileBookChapterRepository: BookChapterRepository {
+    public static let maximumDocumentBytes = 24 * 1_024 * 1_024
+    private let directory: URL
+
+    public init(directory: URL) { self.directory = directory }
+
+    public static func live() -> FileBookChapterRepository {
+        let directory = FileManager.default.urls(for: .applicationSupportDirectory, in: .userDomainMask)[0]
+            .appendingPathComponent("Legado/Chapters", isDirectory: true)
+        return FileBookChapterRepository(directory: directory)
+    }
+
+    public func load(bookURL: String) throws -> [BookChapter] {
+        let url = fileURL(bookURL)
+        guard FileManager.default.fileExists(atPath: url.path) else { return [] }
+        let data = try Data(contentsOf: url, options: .mappedIfSafe)
+        guard data.count <= Self.maximumDocumentBytes else {
+            try? FileManager.default.removeItem(at: url)
+            return []
+        }
+        return try JSONDecoder().decode([BookChapter].self, from: data).sorted { $0.index < $1.index }
+    }
+
+    public func save(_ chapters: [BookChapter], bookURL: String) throws {
+        var normalized = chapters
+        for index in normalized.indices {
+            normalized[index].bookUrl = bookURL
+            normalized[index].index = index
+        }
+        let encoder = JSONEncoder()
+        encoder.outputFormatting = [.sortedKeys]
+        let data = try encoder.encode(normalized)
+        guard data.count <= Self.maximumDocumentBytes else {
+            throw CocoaError(.fileWriteOutOfSpace)
+        }
+        try FileManager.default.createDirectory(at: directory, withIntermediateDirectories: true)
+        try data.write(to: fileURL(bookURL), options: .atomic)
+    }
+
+    public func remove(bookURL: String) throws {
+        let url = fileURL(bookURL)
+        if FileManager.default.fileExists(atPath: url.path) { try FileManager.default.removeItem(at: url) }
+    }
+
+    private func fileURL(_ bookURL: String) -> URL {
+        let name = SHA256.hash(data: Data(bookURL.utf8)).map { String(format: "%02x", $0) }.joined()
+        return directory.appendingPathComponent("\(name).json")
+    }
+}
+
+public actor InMemoryBookChapterRepository: BookChapterRepository {
+    private var values: [String: [BookChapter]]
+    public init(values: [String: [BookChapter]] = [:]) { self.values = values }
+    public func load(bookURL: String) -> [BookChapter] { values[bookURL] ?? [] }
+    public func save(_ chapters: [BookChapter], bookURL: String) { values[bookURL] = chapters }
+    public func remove(bookURL: String) { values[bookURL] = nil }
+}