From 3a9241add947cb6d24b5de7a8927517426a78795 Mon Sep 17 00:00:00 2001 From: Rob Landley Date: Sat, 25 Aug 2012 14:25:22 -0500 Subject: Move commands into "posix", "lsb", and "other" menus/directories. --- toys/posix/cat.c | 42 ++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 42 insertions(+) create mode 100644 toys/posix/cat.c (limited to 'toys/posix/cat.c') diff --git a/toys/posix/cat.c b/toys/posix/cat.c new file mode 100644 index 00000000..81bfcafd --- /dev/null +++ b/toys/posix/cat.c @@ -0,0 +1,42 @@ +/* vi: set sw=4 ts=4: + * + * cat.c - copy inputs to stdout. + * + * Copyright 2006 Rob Landley + * + * See http://www.opengroup.org/onlinepubs/009695399/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); + toys.exitval = EXIT_FAILURE; + } + if (len<1) break; + xwrite(1, toybuf, len); + } +} + +void cat_main(void) +{ + loopfiles(toys.optargs, do_cat); +} -- cgit v1.2.3