forked from bblanchon/ArduinoJson
42 lines
1.1 KiB
C++
42 lines
1.1 KiB
C++
// ArduinoJson - arduinojson.org
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// Copyright Benoit Blanchon 2014-2019
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// MIT License
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#include <stdint.h> // uint8_t
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#include <string.h> // strcmp, strlen...
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class __FlashStringHelper;
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typedef char prog_char;
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typedef void prog_void;
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inline const void* convertPtrToFlash(const void* s) {
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return reinterpret_cast<const char*>(s) + 42;
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}
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inline const void* convertFlashToPtr(const void* s) {
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return reinterpret_cast<const char*>(s) - 42;
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}
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#define F(X) reinterpret_cast<const __FlashStringHelper*>(convertPtrToFlash(X))
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inline uint8_t pgm_read_byte_near(const void* p) {
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return *reinterpret_cast<const uint8_t*>(convertFlashToPtr(p));
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}
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inline void* memcpy_P(void* a, const prog_void* b, size_t n) {
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return memcpy(a, convertFlashToPtr(b), n);
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}
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inline int strcmp_P(const char* a, const prog_char* b) {
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return strcmp(a, reinterpret_cast<const char*>(convertFlashToPtr(b)));
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}
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inline int strncmp_P(const char* a, const prog_char* b, size_t n) {
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return strncmp(a, reinterpret_cast<const char*>(convertFlashToPtr(b)), n);
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}
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inline size_t strlen_P(const prog_char* s) {
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return strlen(reinterpret_cast<const char*>(convertFlashToPtr(s)));
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}
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