diff options
Diffstat (limited to 'include/lib/ArduinoJson/StringTraits/FlashString.hpp')
-rw-r--r-- | include/lib/ArduinoJson/StringTraits/FlashString.hpp | 61 |
1 files changed, 61 insertions, 0 deletions
diff --git a/include/lib/ArduinoJson/StringTraits/FlashString.hpp b/include/lib/ArduinoJson/StringTraits/FlashString.hpp new file mode 100644 index 0000000..0701b9b --- /dev/null +++ b/include/lib/ArduinoJson/StringTraits/FlashString.hpp @@ -0,0 +1,61 @@ +// ArduinoJson - arduinojson.org +// Copyright Benoit Blanchon 2014-2018 +// MIT License + +#pragma once + +#if ARDUINOJSON_ENABLE_PROGMEM + +namespace ArduinoJson { +namespace Internals { +template <> +struct StringTraits<const __FlashStringHelper*, void> { + class Reader { + const char* _ptr; + + public: + Reader(const __FlashStringHelper* ptr) + : _ptr(reinterpret_cast<const char*>(ptr)) {} + + void move() { + _ptr++; + } + + char current() const { + return pgm_read_byte_near(_ptr); + } + + char next() const { + return pgm_read_byte_near(_ptr + 1); + } + }; + + static bool equals(const __FlashStringHelper* str, const char* expected) { + const char* actual = reinterpret_cast<const char*>(str); + if (!actual || !expected) return actual == expected; + return strcmp_P(expected, actual) == 0; + } + + static bool is_null(const __FlashStringHelper* str) { + return !str; + } + + typedef const char* duplicate_t; + + template <typename Buffer> + static duplicate_t duplicate(const __FlashStringHelper* str, Buffer* buffer) { + if (!str) return NULL; + size_t size = strlen_P((const char*)str) + 1; + void* dup = buffer->alloc(size); + if (dup != NULL) memcpy_P(dup, (const char*)str, size); + return static_cast<duplicate_t>(dup); + } + + static const bool has_append = false; + static const bool has_equals = true; + static const bool should_duplicate = true; +}; +} // namespace Internals +} // namespace ArduinoJson + +#endif |