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lib/ArduinoStreamUtils/src/StreamUtils/Prints/PrintProxy.hpp

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+// StreamUtils - github.com/bblanchon/ArduinoStreamUtils
+// Copyright Benoit Blanchon 2019-2021
+// MIT License
+
+#pragma once
+
+#include <Print.h>
+
+#include "../Configuration.hpp"
+#include "../Polyfills.hpp"
+
+namespace StreamUtils {
+
+template <typename WritePolicy>
+class PrintProxy : public Print {
+ public:
+  explicit PrintProxy(Print &upstream, WritePolicy writer = WritePolicy{})
+      : _target(upstream), _writer(Polyfills::move(writer)) {}
+
+  PrintProxy(const PrintProxy &other)
+      : _target(other._target), _writer(other._writer) {}
+
+  ~PrintProxy() {
+    _writer.implicitFlush(_target);
+  }
+
+  size_t write(const uint8_t *buffer, size_t size) override {
+    return _writer.write(_target, buffer, size);
+  }
+
+  size_t write(uint8_t data) override {
+    return _writer.write(_target, data);
+  }
+
+#if STREAMUTILS_PRINT_FLUSH_EXISTS
+  void flush() override {
+#else
+  void flush() {
+#endif
+    _writer.flush(_target);
+  }
+
+  using Print::write;
+
+ protected:
+  Print &_target;
+  WritePolicy _writer;
+};
+
+}  // namespace StreamUtils