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#pragma once
#include <stdlib.h>
/**
* @brief Get a hexadecimal string representation from memory buffer.
* @param[in] src Buffer's pointer.
* @param[in] sz Buffer's size.
* @return A pointer to the result string. Caller is responsible for the result lifetime.
*/
static inline char* to_hex_string(const void* src, long unsigned int sz)
{
static const char lookup[] =
{
'0', '1', '2', '3',
'4', '5', '6', '7',
'8', '9', 'a', 'b',
'c', 'd', 'e', 'f'
};
const char* source;
char* result;
long unsigned int i;
result = NULL;
if (src && sz)
{
source = (const char*)src;
result = (char*)malloc(sz * 2 + 1);
if (result)
{
result[sz * 2] = 0;
for (i = 0; i < sz; ++i)
{
result[i * 2] = lookup[(source[i] & 0xf0) >> 4];
result[i * 2 + 1] = lookup[source[i] & 0x0f];
}
}
}
return result;
}
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