usr.bin/file2c/file2c.c

   1 /*
   2  * ----------------------------------------------------------------------------
   3  * "THE BEER-WARE LICENSE" (Revision 42):
   4  * <phk@FreeBSD.org> wrote this file.  As long as you retain this notice you
   5  * can do whatever you want with this stuff. If we meet some day, and you think
   6  * this stuff is worth it, you can buy me a beer in return.   Poul-Henning Kamp
   7  * ----------------------------------------------------------------------------
   8  *
   9  * $FreeBSD: src/usr.bin/file2c/file2c.c,v 1.11 2007/10/30 17:49:00 ru Exp $
  10  * $DragonFly: src/usr.bin/file2c/file2c.c,v 1.4 2008/04/05 09:12:45 swildner Exp $
  11  *
  12  */
  13
  14 #include <limits.h>
  15 #include <stdio.h>
  16 #include <stdlib.h>
  17 #include <unistd.h>
  18
  19 static void
  20 usage(void)
  21 {
  22
  23         fprintf(stderr, "usage: %s [-sx] [-n count] [prefix [suffix]]\n",
  24             getprogname());
  25         exit(1);
  26 }
  27
  28 int
  29 main(int argc, char *argv[])
  30 {
  31         int c, count, linepos, maxcount, pretty, radix;
  32
  33         maxcount = 0;
  34         pretty = 0;
  35         radix = 10;
  36         while ((c = getopt(argc, argv, "n:sx")) != -1) {
  37                 switch (c) {
  38                 case 'n':       /* Max. number of bytes per line. */
  39                         maxcount = strtol(optarg, NULL, 10);
  40                         break;
  41                 case 's':       /* Be more style(9) compliant. */
  42                         pretty = 1;
  43                         break;
  44                 case 'x':       /* Print hexadecimal numbers. */
  45                         radix = 16;
  46                         break;
  47                 case '?':
  48                 default:
  49                         usage();
  50                 }
  51         }
  52         argc -= optind;
  53         argv += optind;
  54
  55         if (argc > 0)
  56                 printf("%s\n", argv[0]);
  57         count = linepos = 0;
  58         while((c = getchar()) != EOF) {
  59                 if (count) {
  60                         putchar(',');
  61                         linepos++;
  62                 }
  63                 if ((maxcount == 0 && linepos > 70) ||
  64                     (maxcount > 0 && count >= maxcount)) {
  65                         putchar('\n');
  66                         count = linepos = 0;
  67                 }
  68                 if (pretty) {
  69                         if (count) {
  70                                 putchar(' ');
  71                                 linepos++;
  72                         } else {
  73                                 putchar('\t');
  74                                 linepos += 8;
  75                         }
  76                 }
  77                 switch (radix) {
  78                 case 10:
  79                         linepos += printf("%d", c);
  80                         break;
  81                 case 16:
  82                         linepos += printf("0x%02x", c);
  83                         break;
  84                 default:
  85                         abort();
  86                 }
  87                 count++;
  88         }
  89         putchar('\n');
  90         if (argc > 1)
  91                 printf("%s\n", argv[1]);
  92         return (0);
  93 }