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arduino-cli/libraries/ArduinoJson_6.x/ArduinoJson/StringStorage/StringCopier.hpp

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+// ArduinoJson - arduinojson.org
+// Copyright Benoit Blanchon 2014-2020
+// MIT License
+
+#pragma once
+
+#include <ArduinoJson/Memory/MemoryPool.hpp>
+
+namespace ARDUINOJSON_NAMESPACE {
+
+class StringCopier {
+ public:
+  StringCopier(MemoryPool& pool) : _pool(&pool) {}
+
+  void startString() {
+    _pool->getFreeZone(&_ptr, &_capacity);
+    _size = 0;
+  }
+
+  const char* save() {
+    ARDUINOJSON_ASSERT(_ptr);
+    return _pool->saveStringFromFreeZone(_size);
+  }
+
+  void append(const char* s) {
+    while (*s) append(*s++);
+  }
+
+  void append(const char* s, size_t n) {
+    while (n-- > 0) append(*s++);
+  }
+
+  void append(char c) {
+    if (!_ptr)
+      return;
+
+    if (_size >= _capacity) {
+      _ptr = 0;
+      _pool->markAsOverflowed();
+      return;
+    }
+
+    _ptr[_size++] = c;
+  }
+
+  bool isValid() {
+    return _ptr != 0;
+  }
+
+  const char* c_str() {
+    return _ptr;
+  }
+
+  typedef storage_policies::store_by_copy storage_policy;
+
+ private:
+  MemoryPool* _pool;
+  char* _ptr;
+  size_t _size;
+  size_t _capacity;
+};
+}  // namespace ARDUINOJSON_NAMESPACE