mirror of
https://github.com/sheumann/hush.git
synced 2024-07-02 08:29:40 +00:00
d88f94a5df
function old new delta nl_main - 201 +201 print_numbered_lines - 115 +115 cat_main 36 149 +113 static.nl_longopts - 106 +106 packed_usage 31081 31182 +101 applet_main 1488 1492 +4 applet_names 2575 2578 +3 applet_suid 93 94 +1 applet_install_loc 186 187 +1 ------------------------------------------------------------------------------ (add/remove: 4/0 grow/shrink: 6/0 up/down: 645/0) Total: 645 bytes Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
103 lines
2.6 KiB
C
103 lines
2.6 KiB
C
/* vi: set sw=4 ts=4: */
|
|
/*
|
|
* cat implementation for busybox
|
|
*
|
|
* Copyright (C) 2003 Manuel Novoa III <mjn3@codepoet.org>
|
|
*
|
|
* Licensed under GPLv2, see file LICENSE in this source tree.
|
|
*/
|
|
//config:config CAT
|
|
//config: bool "cat"
|
|
//config: default y
|
|
//config: help
|
|
//config: cat is used to concatenate files and print them to the standard
|
|
//config: output. Enable this option if you wish to enable the 'cat' utility.
|
|
|
|
//applet:IF_CAT(APPLET_NOFORK(cat, cat, BB_DIR_BIN, BB_SUID_DROP, cat))
|
|
|
|
//kbuild:lib-$(CONFIG_CAT) += cat.o
|
|
// For -n:
|
|
//kbuild:lib-$(CONFIG_CAT) += nl.o
|
|
|
|
/* BB_AUDIT SUSv3 compliant */
|
|
/* http://www.opengroup.org/onlinepubs/007904975/utilities/cat.html */
|
|
|
|
//usage:#define cat_trivial_usage
|
|
//usage: "[-n] [FILE]..."
|
|
//usage:#define cat_full_usage "\n\n"
|
|
//usage: "Concatenate FILEs and print them to stdout"
|
|
//usage: "\n -n Number output lines"
|
|
/*
|
|
Longopts not implemented yet:
|
|
--number-nonblank number nonempty output lines, overrides -n
|
|
--number number all output lines
|
|
Not implemented yet:
|
|
-A, --show-all equivalent to -vET
|
|
-e equivalent to -vE
|
|
-E, --show-ends display $ at end of each line
|
|
-s, --squeeze-blank suppress repeated empty output lines
|
|
-t equivalent to -vT
|
|
-T, --show-tabs display TAB characters as ^I
|
|
-v, --show-nonprinting use ^ and M- notation, except for LFD and TAB
|
|
*/
|
|
//usage:
|
|
//usage:#define cat_example_usage
|
|
//usage: "$ cat /proc/uptime\n"
|
|
//usage: "110716.72 17.67"
|
|
|
|
#include "libbb.h"
|
|
|
|
/* This is a NOFORK applet. Be very careful! */
|
|
|
|
|
|
int bb_cat(char **argv)
|
|
{
|
|
int fd;
|
|
int retval = EXIT_SUCCESS;
|
|
|
|
if (!*argv)
|
|
argv = (char**) &bb_argv_dash;
|
|
|
|
do {
|
|
fd = open_or_warn_stdin(*argv);
|
|
if (fd >= 0) {
|
|
/* This is not a xfunc - never exits */
|
|
off_t r = bb_copyfd_eof(fd, STDOUT_FILENO);
|
|
if (fd != STDIN_FILENO)
|
|
close(fd);
|
|
if (r >= 0)
|
|
continue;
|
|
}
|
|
retval = EXIT_FAILURE;
|
|
} while (*++argv);
|
|
|
|
return retval;
|
|
}
|
|
|
|
int cat_main(int argc, char **argv) MAIN_EXTERNALLY_VISIBLE;
|
|
int cat_main(int argc UNUSED_PARAM, char **argv)
|
|
{
|
|
struct number_state ns;
|
|
unsigned opt;
|
|
|
|
/* -u is ignored */
|
|
opt = getopt32(argv, "nbu");
|
|
argv += optind;
|
|
if (!(opt & 3)) /* no -n or -b */
|
|
return bb_cat(argv);
|
|
|
|
if (!*argv)
|
|
*--argv = (char*)"-";
|
|
ns.width = 6;
|
|
ns.start = 1;
|
|
ns.inc = 1;
|
|
ns.sep = "\t";
|
|
ns.empty_str = "\n";
|
|
ns.all = !(opt & 2); /* -n without -b */
|
|
ns.nonempty = (opt & 2); /* -b (with or without -n) */
|
|
do {
|
|
print_numbered_lines(&ns, *argv);
|
|
} while (*++argv);
|
|
fflush_stdout_and_exit(EXIT_SUCCESS);
|
|
}
|