1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
|
/*
* Copyright 2018, University Corporation for Atmospheric Research
* See netcdf/COPYRIGHT file for copying and redistribution conditions.
*/
#include "config.h"
#include "stdlib.h"
#include "stdio.h"
#ifdef HAVE_UNISTD_H
#include <unistd.h>
#endif
#undef DEBUG
static char hex[16] = "0123456789abcdef";
int
main(int argc, char** argv)
{
unsigned char c;
unsigned int c0,c1;
FILE* f = NULL;
if(argc > 1) {
/* use argv[1] as input */
f = fopen(argv[1],"r");
if(f == NULL) {fprintf(stderr,"No such file: %s\n",argv[1]); exit(1);}
} else
f = stdin;
for(;;) {
int ret = fread(&c, 1, 1, f);
if(ret != 1) break;
c1 = c;
c0 = c1 & 0xf;
c1 = (c1 >> 4);
c0 = hex[c0];
c1 = hex[c1];
printf("%c%c",(char)c1,(char)c0);
}
if(f != stdin) fclose(f);
return 0;
}
|
