54 lines
973 B
C
54 lines
973 B
C
/* See LICENSE file for copyright and license details. */
|
|
#include <stdbool.h>
|
|
#include <stdio.h>
|
|
#include <stdlib.h>
|
|
#include <unistd.h>
|
|
#include "util.h"
|
|
|
|
static void
|
|
usage(void)
|
|
{
|
|
eprintf("usage: %s [-a] [file...]\n", argv0);
|
|
}
|
|
|
|
int
|
|
main(int argc, char *argv[])
|
|
{
|
|
bool aflag = false;
|
|
char buf[BUFSIZ];
|
|
int i, nfps = 1;
|
|
size_t n;
|
|
FILE **fps;
|
|
|
|
ARGBEGIN {
|
|
case 'a':
|
|
aflag = true;
|
|
break;
|
|
default:
|
|
usage();
|
|
} ARGEND;
|
|
|
|
if(!(fps = malloc(sizeof *fps)))
|
|
eprintf("malloc:");
|
|
fps[nfps-1] = stdout;
|
|
|
|
for(; argc > 0; argc--, argv++) {
|
|
if(!(fps = realloc(fps, ++nfps * sizeof *fps)))
|
|
eprintf("realloc:");
|
|
if(!(fps[nfps-1] = fopen(argv[0], aflag ? "a" : "w")))
|
|
eprintf("fopen %s:", argv[0]);
|
|
}
|
|
while((n = fread(buf, 1, sizeof buf, stdin)) > 0) {
|
|
for(i = 0; i < nfps; i++) {
|
|
if(fwrite(buf, 1, n, fps[i]) != n)
|
|
eprintf("%s: write error:", buf);
|
|
}
|
|
}
|
|
if(ferror(stdin))
|
|
eprintf("<stdin>: read error:");
|
|
free(fps);
|
|
|
|
return EXIT_SUCCESS;
|
|
}
|
|
|