morpheus-base

morpheus base system
git clone git://git.2f30.org/morpheus-base
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cat.c (745B)

      1 /* See LICENSE file for copyright and license details. */
      2 #include <stdio.h>
      3 #include <stdlib.h>
      4 #include <unistd.h>
      5 
      6 #include "text.h"
      7 #include "util.h"
      8 
      9 static void
     10 usage(void)
     11 {
     12 	eprintf("usage: %s [-u] [file...]\n", argv0);
     13 }
     14 
     15 int
     16 main(int argc, char *argv[])
     17 {
     18 	FILE *fp;
     19 	int ret = 0;
     20 
     21 	ARGBEGIN {
     22 	case 'u':
     23 		setbuf(stdout, NULL);
     24 		break;
     25 	default:
     26 		usage();
     27 	} ARGEND;
     28 
     29 	if (argc == 0) {
     30 		concat(stdin, "<stdin>", stdout, "<stdout>");
     31 	} else {
     32 		for (; argc; argc--, argv++) {
     33 			if (argv[0][0] == '-' && !argv[0][1])
     34 				argv[0] = "/dev/fd/0";
     35 			if (!(fp = fopen(argv[0], "r"))) {
     36 				weprintf("fopen %s:", argv[0]);
     37 				ret = 1;
     38 				continue;
     39 			}
     40 			concat(fp, argv[0], stdout, "<stdout>");
     41 			fclose(fp);
     42 		}
     43 	}
     44 	return ret;
     45 }