hex2bin_by_zibri.c

/*
Best hex2bin function I came up with.
By Zibri

Valid strings examples:
"1 d0 600d c0FFeE"
"01d0600dc0ffee"

Spaces are ignored.
Parsing stops at the first non hex character.
Mixed case accepted.

*/
int hex2bin_by_zibri(char *source_str, char *dest_buffer)
{
  char *line = source_str;
  char *data = line;
  int offset;
  int read_byte;
  int data_len = 0;

  while (sscanf(data, " %02x%n", &read_byte, &offset) == 1) {
    dest_buffer[data_len++] = read_byte;
    data += offset;
  }
  return data_len;
}