sbase

suckless unix tools
git clone git://git.2f30.org/sbase.git
Log | Files | Refs | README | LICENSE

sponge.c (701B)


      1 /* See LICENSE file for copyright and license details. */
      2 #include <fcntl.h>
      3 #include <stdlib.h>
      4 #include <unistd.h>
      5 
      6 #include "util.h"
      7 
      8 static void
      9 usage(void)
     10 {
     11 	eprintf("usage: %s file\n", argv0);
     12 }
     13 
     14 int
     15 main(int argc, char *argv[])
     16 {
     17 	char tmp[] = "/tmp/sponge-XXXXXX";
     18 	int fd, tmpfd;
     19 
     20 	ARGBEGIN {
     21 	default:
     22 		usage();
     23 	} ARGEND
     24 
     25 	if (argc != 1)
     26 		usage();
     27 
     28 	if ((tmpfd = mkstemp(tmp)) < 0)
     29 		eprintf("mkstemp:");
     30 	unlink(tmp);
     31 	if (concat(0, "<stdin>", tmpfd, "<tmpfile>") < 0)
     32 		return 1;
     33 	if (lseek(tmpfd, 0, SEEK_SET) < 0)
     34 		eprintf("lseek:");
     35 
     36 	if ((fd = creat(argv[0], 0666)) < 0)
     37 		eprintf("creat %s:", argv[0]);
     38 	if (concat(tmpfd, "<tmpfile>", fd, argv[0]) < 0)
     39 		return 1;
     40 
     41 	return 0;
     42 }