格式化笔记 iCloud 按钮支持二阶保存到系统文件

Note/FormatNoteViewController.swift

@@ -16,6 +16,7 @@ class FormatNoteViewController: UIViewController {
     private var pasteButton: UIBarButtonItem!
     private var resetButton: UIBarButtonItem!
     private var rightBarButtonMode: RightBarButtonMode = .paste
+    private var isCloudFormatted = false
 
     private enum RightBarButtonMode {
         case paste
@@ -104,6 +105,8 @@ class FormatNoteViewController: UIViewController {
     @objc private func didTapResetButton() {
         textView.text = ""
         rightBarButtonMode = .paste
+        isCloudFormatted = false
+        iCloudButton.setTitle("iCloud 格式化", for: .normal)
         updateRightBarButtonItem()
     }
 
@@ -121,13 +124,142 @@ class FormatNoteViewController: UIViewController {
     }
 
     @objc private func didTapiCloudButton() {
+        if isCloudFormatted {
+            saveToFiles()
+        } else {
+            textView.text = formatForCloud(textView.text)
+            isCloudFormatted = true
+            iCloudButton.setTitle("保存到 iCloud", for: .normal)
+            rightBarButtonMode = .reset
+            updateRightBarButtonItem()
+        }
+    }
+
+    @objc private func didTapNoteButton() {
+        textView.text = formatForNote(textView.text)
         rightBarButtonMode = .reset
         updateRightBarButtonItem()
     }
 
-    @objc private func didTapNoteButton() {
-        rightBarButtonMode = .reset
-        updateRightBarButtonItem()
+    private func formatForCloud(_ text: String) -> String {
+        var content = text
+        content = content.replacingOccurrences(of: " ", with: "")
+        content = content.replacingOccurrences(of: "　", with: "")
+        content = content.replacingOccurrences(of: "\u{00A0}", with: "")
+        content = content.replacingOccurrences(of: "# ", with: "")
+        content = content.replacingOccurrences(of: "#", with: "")
+        content = content.replacingOccurrences(of: "！", with: "。")
+        content = content.replacingOccurrences(of: "!", with: "。")
+        content = content.replacingOccurrences(of: ";", with: "。")
+        content = content.replacingOccurrences(of: "；", with: "。")
+        content = content.replacingOccurrences(of: ".", with: "。")
+        content = content.replacingOccurrences(of: "（", with: "(")
+        content = content.replacingOccurrences(of: "）", with: ")")
+        content = content.replacingOccurrences(of: "?", with: "？")
+        content = content.replacingOccurrences(of: ",", with: "，")
+        content = content.replacingOccurrences(of: ":", with: "：")
+
+        let numberReplacements: [(String, String)] = [
+            ("20、", "二十、"), ("19、", "十九、"), ("18、", "十八、"), ("17、", "十七、"),
+            ("16、", "十六、"), ("15、", "十五、"), ("14、", "十四、"), ("13、", "十三、"),
+            ("12、", "十二、"), ("11、", "十一、"), ("10、", "十、"),
+            ("9、", "九、"), ("8、", "八、"), ("7、", "七、"), ("6、", "六、"),
+            ("5、", "五、"), ("4、", "四、"), ("3、", "三、"), ("2、", "二、"), ("1、", "一、")
+        ]
+        for (old, new) in numberReplacements {
+            content = content.replacingOccurrences(of: old, with: new)
+        }
+
+        content = content.replacingOccurrences(of: "。", with: "。\n")
+        content = content.replacingOccurrences(of: "？", with: "？\n")
+        content = removeEmptyLines(content)
+        content = content.replacingOccurrences(of: "：\\s*", with: "：\n\n", options: .regularExpression)
+        content = content.replacingOccurrences(of: "。", with: "。\n")
+        content = content.replacingOccurrences(of: "？", with: "？\n")
+        content = content.replacingOccurrences(of: "：\n\n", with: "：")
+        content = content.replacingOccurrences(of: "：一、", with: "：\n\n一、")
+        content = content.replacingOccurrences(of: " ", with: "")
+        content = content.replacingOccurrences(of: "---", with: "---\n")
+        content = content.replacingOccurrences(of: "日星期", with: "日 星期")
+        content = "# " + content
+        content = insertEmptyLineAfterFirstLine(content)
+        return content
+    }
+
+    private func formatForNote(_ text: String) -> String {
+        var content = text
+        content = content.replacingOccurrences(of: " ", with: "")
+        content = content.replacingOccurrences(of: "# ", with: "")
+        content = content.replacingOccurrences(of: "#", with: "")
+        content = content.replacingOccurrences(of: "！", with: "。")
+        content = content.replacingOccurrences(of: "!", with: "。")
+        content = content.replacingOccurrences(of: ";", with: "。")
+        content = content.replacingOccurrences(of: "；", with: "。")
+        content = content.replacingOccurrences(of: ".", with: "。")
+        content = content.replacingOccurrences(of: "（", with: "(")
+        content = content.replacingOccurrences(of: "）", with: ")")
+        content = content.replacingOccurrences(of: "?", with: "？")
+        content = content.replacingOccurrences(of: ",", with: "，")
+        content = content.replacingOccurrences(of: ":", with: "：")
+        content = content.replacingOccurrences(of: "。", with: "。\n")
+        content = content.replacingOccurrences(of: "？", with: "？\n")
+        content = removeEmptyLines(content)
+        content = content.replacingOccurrences(of: "---", with: "")
+        content = content.replacingOccurrences(of: "日星期", with: "日 星期")
+        content = insertEmptyLineAfterFirstLine(content)
+        return content
+    }
+
+    private func saveToFiles() {
+        let fileName = generateFileName()
+        let fileURL = FileManager.default.temporaryDirectory.appendingPathComponent(fileName)
+
+        do {
+            try textView.text.write(to: fileURL, atomically: true, encoding: .utf8)
+            let documentPicker = UIDocumentPickerViewController(forExporting: [fileURL], asCopy: true)
+            documentPicker.delegate = self
+            present(documentPicker, animated: true)
+        } catch {
+            print("Failed to write file: \(error)")
+        }
+    }
+
+    private func generateFileName() -> String {
+        let text = textView.text ?? ""
+        let firstLine = text.components(separatedBy: .newlines).first ?? ""
+        let trimmed = firstLine.trimmingCharacters(in: .whitespaces)
+        let withoutHash = trimmed.replacingOccurrences(of: "^#\\s*", with: "", options: .regularExpression)
+        let cleanName = withoutHash.trimmingCharacters(in: .whitespaces)
+
+        if cleanName.isEmpty {
+            return "formatted_note_\(Int(Date().timeIntervalSince1970)).md"
+        }
+        return cleanName + ".md"
+    }
+
+    private func removeEmptyLines(_ text: String) -> String {
+        let lines = text.components(separatedBy: .newlines)
+        let nonEmptyLines = lines.filter { !$0.trimmingCharacters(in: .whitespaces).isEmpty }
+        return nonEmptyLines.joined(separator: "\n")
+    }
+
+    private func insertEmptyLineAfterFirstLine(_ text: String) -> String {
+        var lines = text.components(separatedBy: .newlines)
+        if !lines.isEmpty {
+            lines.insert("", at: 1)
+        }
+        return lines.joined(separator: "\n")
+    }
+}
+
+extension FormatNoteViewController: UIDocumentPickerDelegate {
+
+    func documentPicker(_ controller: UIDocumentPickerViewController, didPickDocumentsAt urls: [URL]) {
+        // File saved to selected location
+    }
+
+    func documentPickerWasCancelled(_ controller: UIDocumentPickerViewController) {
+        // User cancelled
     }
 }