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27 #include "cborconstants_p.h"
28 #include "compilersupport_p.h"
31 static inline uint16_t get16(const uint8_t *ptr)
34 memcpy(&result, ptr, sizeof(result));
35 return cbor_ntohs(result);
38 static inline uint32_t get32(const uint8_t *ptr)
41 memcpy(&result, ptr, sizeof(result));
42 return cbor_ntohl(result);
45 static inline uint64_t get64(const uint8_t *ptr)
48 memcpy(&result, ptr, sizeof(result));
49 return cbor_ntohll(result);
52 static CborError extract_number(const uint8_t **ptr, const uint8_t *end, uint64_t *len)
54 uint8_t additional_information = **ptr & SmallValueMask;
56 if (additional_information < Value8Bit) {
57 *len = additional_information;
60 if (unlikely(additional_information > Value64Bit))
61 return CborErrorIllegalNumber;
63 size_t bytesNeeded = 1 << (additional_information - Value8Bit);
64 if (unlikely(bytesNeeded > (size_t)(end - *ptr))) {
65 return CborErrorUnexpectedEOF;
66 } else if (bytesNeeded == 1) {
67 *len = (uint8_t)(*ptr)[0];
68 } else if (bytesNeeded == 2) {
70 } else if (bytesNeeded == 4) {