Added support for Stream (issue #300)

include/ArduinoJson/StringTraits/CharPointer.hpp

@@ -0,0 +1,57 @@
+// Copyright Benoit Blanchon 2014-2016
+// MIT License
+//
+// Arduino JSON library
+// https://github.com/bblanchon/ArduinoJson
+// If you like this project, please add a star!
+
+#pragma once
+
+namespace ArduinoJson {
+namespace Internals {
+
+struct CharPtrFuncs {
+  class Iterator {
+    const char* _ptr;
+
+   public:
+    Iterator(const char* ptr) : _ptr(ptr ? ptr : "") {}
+
+    char next() {
+      char c = *_ptr;
+      if (c) ++_ptr;
+      return c;
+    }
+  };
+
+  static bool equals(const char* str, const char* expected) {
+    return strcmp(str, expected) == 0;
+  }
+
+  template <typename Buffer>
+  static char* duplicate(const char* str, Buffer* buffer) {
+    if (!str) return NULL;
+    size_t size = strlen(str) + 1;
+    void* dup = buffer->alloc(size);
+    if (dup != NULL) memcpy(dup, str, size);
+    return static_cast<char*>(dup);
+  }
+
+  static const bool has_append = false;
+  static const bool has_equals = true;
+  static const bool should_duplicate = false;
+};
+
+template <>
+struct StringFuncs<const char*, void> : CharPtrFuncs {};
+
+template <>
+struct StringFuncs<char*, void> : CharPtrFuncs {};
+
+template <size_t N>
+struct StringFuncs<char[N], void> : CharPtrFuncs {};
+
+template <size_t N>
+struct StringFuncs<const char[N], void> : CharPtrFuncs {};
+}
+}