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/* cat.c - copy inputs to stdout.
*
* Copyright 2006 Rob Landley <rob@landley.net>
*
* See http://opengroup.org/onlinepubs/9699919799/utilities/cat.html
USE_CAT(NEWTOY(cat, "u", TOYFLAG_BIN))
config CAT
bool "cat"
default y
help
usage: cat [-u] [file...]
Copy (concatenate) files to stdout. If no files listed, copy from stdin.
Filename "-" is a synonym for stdin.
-u Copy one byte at a time (slow).
*/
#include "toys.h"
static void do_cat(int fd, char *name)
{
int len, size=toys.optflags ? 1 : sizeof(toybuf);
for (;;) {
len = read(fd, toybuf, size);
if (len<0) perror_msg("%s",name);
if (len<1) break;
xwrite(1, toybuf, len);
}
}
void cat_main(void)
{
loopfiles(toys.optargs, do_cat);
}
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