Add swift online punctuation (#1661)

swift-api-examples/SherpaOnnx.swift

@@ -1095,6 +1095,52 @@ class SherpaOnnxOfflinePunctuationWrapper {
   }
 }
 
+func sherpaOnnxOnlinePunctuationModelConfig(
+  cnnBiLstm: String,
+  bpeVocab: String,
+  numThreads: Int = 1,
+  debug: Int = 0,
+  provider: String = "cpu"
+) -> SherpaOnnxOnlinePunctuationModelConfig {
+  return SherpaOnnxOnlinePunctuationModelConfig(
+    cnn_bilstm: toCPointer(cnnBiLstm),
+    bpe_vocab: toCPointer(bpeVocab),
+    num_threads: Int32(numThreads),
+    debug: Int32(debug),
+    provider: toCPointer(provider))
+}
+
+func sherpaOnnxOnlinePunctuationConfig(
+  model: SherpaOnnxOnlinePunctuationModelConfig
+) -> SherpaOnnxOnlinePunctuationConfig {
+  return SherpaOnnxOnlinePunctuationConfig(model: model)
+}
+
+class SherpaOnnxOnlinePunctuationWrapper {
+  /// A pointer to the underlying counterpart in C
+  let ptr: OpaquePointer!
+
+  /// Constructor taking a model config
+  init(
+    config: UnsafePointer<SherpaOnnxOnlinePunctuationConfig>!
+  ) {
+    ptr = SherpaOnnxCreateOnlinePunctuation(config)
+  }
+
+  deinit {
+    if let ptr {
+      SherpaOnnxDestroyOnlinePunctuation(ptr)
+    }
+  }
+
+  func addPunct(text: String) -> String {
+    let cText = SherpaOnnxOnlinePunctuationAddPunct(ptr, toCPointer(text))
+    let ans = String(cString: cText!)
+    SherpaOnnxOnlinePunctuationFreeText(cText)
+    return ans
+  }
+}
+
 func sherpaOnnxOfflineSpeakerSegmentationPyannoteModelConfig(model: String)
   -> SherpaOnnxOfflineSpeakerSegmentationPyannoteModelConfig
 {