/*
                   hex_dump()
	this routine was written by Google AI 
	
	Call: hex_dump(address to start, length)

*/

void hex_dump(const void *addr, size_t len) {
    const unsigned char *pc = (const unsigned char *)addr;
    size_t i, j;

    for (i = 0; i < len; i += 16) {
        // 1. Print the current line offset
        printf("%08zx  ", i);

        // 2. Print hex representation of up to 16 bytes
        for (j = 0; j < 16; j++) {
            if (i + j < len) {
                printf("%02x ", pc[i + j]);
            } else {
                printf("   "); // Pad spaces for incomplete final line
            }
        }

        printf(" |");

        // 3. Print printable ASCII characters
        for (j = 0; j < 16; j++) {
            if (i + j < len) {
                // Check if character is printable, otherwise default to '.'
                if (isprint(pc[i + j])) {
                    printf("%c", pc[i + j]);
                } else {
                    printf(".");
                }
            } else {
                printf(" "); // Pad with spaces if past the buffer end
            }
        }

        printf("|\n");
    }
}