caniadd/src/util.c

40 lines
988 B
C

#include <stdlib.h>
#include <string.h>
#include "util.h"
void util_byte2hex(const uint8_t* bytes, size_t bytes_len,
bool uppercase, char* out)
{
const char* hex = (uppercase) ? "0123456789ABCDEF" : "0123456789abcdef";
for (size_t i = 0; i < bytes_len; i++) {
*out++ = hex[bytes[i] >> 4];
*out++ = hex[bytes[i] & 0xF];
}
*out = '\0';
}
const char *util_get_home()
{
const char *home_env = getenv("HOME");
return home_env; /* TODO this can be null, use other methods as fallback */
}
char *util_basename(const char *fullpath)
{
char *name_part = strrchr(fullpath, '/');
if (name_part)
name_part++;
else
name_part = (char*)fullpath;
return name_part;
}
uint64_t util_timespec_diff(const struct timespec *past,
const struct timespec *future)
{
int64_t sdiff = future->tv_sec - past->tv_sec;
int64_t nsdiff = future->tv_nsec - past->tv_nsec;
return sdiff * 1000 + (nsdiff / 1000000);
}