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lib/ArduinoStreamUtils/src/StreamUtils/Buffers/CharArray.hpp

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+// StreamUtils - github.com/bblanchon/ArduinoStreamUtils
+// Copyright Benoit Blanchon 2019-2021
+// MIT License
+
+#pragma once
+
+#include <assert.h>
+#include <stdlib.h>  // size_t
+#include <string.h>  // memcpy
+
+namespace StreamUtils {
+
+template <typename TAllocator>
+class CharArray {
+ public:
+  CharArray(size_t size, TAllocator allocator = TAllocator())
+      : _allocator(allocator) {
+    _data = reinterpret_cast<char *>(_allocator.allocate(size));
+    _size = _data ? size : 0;
+  }
+
+  CharArray(const CharArray &src) : CharArray(src._size, src._allocator) {
+    if (_data != nullptr)
+      memcpy(_data, src._data, _size);
+  }
+
+  ~CharArray() {
+    _allocator.deallocate(_data);
+  }
+
+  size_t size() const {
+    return _size;
+  }
+
+  operator bool() const {
+    return _size > 0;
+  }
+
+  char *operator&() {
+    return _data;
+  }
+
+  char &operator[](size_t i) {
+    return _data[i];
+  }
+
+  char operator[](size_t i) const {
+    return _data[i];
+  }
+
+ protected:
+  TAllocator _allocator;
+  char *_data;
+  size_t _size;
+};
+
+}  // namespace StreamUtils