GopherProxy

	tee.c - sbase - suckless unix tools
	git clone git://git.suckless.org/sbase
	Log
	Files
	Refs
	README
	LICENSE
	---
	tee.c (1061B)
	---
	1 /* See LICENSE file for copyright and license details. */
	2 #include <fcntl.h>
	3 #include <signal.h>
	4 #include <unistd.h>
	5
	6 #include "util.h"
	7
	8 static void
	9 usage(void)
	10 {
	11 eprintf("usage: %s [-ai] [file ...]\n", argv0);
	12 }
	13
	14 int
	15 main(int argc, char *argv[])
	16 {
	17 int *fds = NULL;
	18 size_t i, nfds;
	19 ssize_t n;
	20 int ret = 0, aflag = O_TRUNC, iflag = 0;
	21 char buf[BUFSIZ];
	22
	23 ARGBEGIN {
	24 case 'a':
	25 aflag = O_APPEND;
	26 break;
	27 case 'i':
	28 iflag = 1;
	29 break;
	30 default:
	31 usage();
	32 } ARGEND
	33
	34 if (iflag && signal(SIGINT, SIG_IGN) == SIG_ERR)
	35 eprintf("signal:");
	36 nfds = argc + 1;
	37 fds = ecalloc(nfds, sizeof(*fds));
	38
	39 for (i = 0; i < argc; i++) {
	40 if ((fds[i] = open(argv[i], O_WRONLY\|O_CREAT\|aflag, 0666…
	41 weprintf("open %s:", argv[i]);
	42 ret = 1;
	43 }
	44 }
	45 fds[i] = 1;
	46
	47 while ((n = read(0, buf, sizeof(buf))) > 0) {
	48 for (i = 0; i < nfds; i++) {
	49 if (fds[i] >= 0 && writeall(fds[i], buf, n) < 0)…
	50 weprintf("write %s:", (i != argc) ? argv…
	51 fds[i] = -1;
	52 ret = 1;
	53 }
	54 }
	55 }
	56 if (n < 0)
	57 eprintf("read <stdin>:");
	58
	59 return ret;
	60 }