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#include <u.h>
#include <base.h>
static void
usage(void)
{
fmt·panic("usage: %s [-u] [file ...]\n", argv0);
exits("usage");
}
static void
cat(int fd, char *s)
{
int err;
intptr nr, nw;
char buf[8192];
while(!(err=sys·read(fd, buf, sizeof(buf), &nr)) && nr>0){
if(sys·write(1, buf, nr, &nw) || nr != nw)
fmt·panic("write error copying %s: %r", s);
}
if(err)
fmt·panic("error reading %s: %r", s);
}
int
main(int argc, char *argv[])
{
int fd;
ARGBEGIN{
case 'u': /* ignore */ break;
default:
usage();
}ARGEND;
if(!argc){
cat(0, "<stdin>");
exits(0);
}
while(argc-- > 0){
if(sys·open(*argv, sys·ORead, 0, &fd))
fmt·panic("can't open %s: %r", *argv);
cat(fd, *argv);
sys·close(fd);
argv++;
}
return 0;
}
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