busybox

/* vi: set sw=4 ts=4: */

/*

 * tiny-ls.c version 0.1.0: A minimalist 'ls'

 * Copyright (C) 1996 Brian Candler <B.Candler@pobox.com>

 *

 *  This program is free software; you can redistribute it and/or modify

 *  it under the terms of the GNU General Public License as published by

 *  the Free Software Foundation; either version 2 of the License, or

 *  (at your option) any later version.

 *

 *  This program is distributed in the hope that it will be useful,

 *  but WITHOUT ANY WARRANTY; without even the implied warranty of

 *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the

 *  GNU General Public License for more details.

 *

 *  You should have received a copy of the GNU General Public License

 *  along with this program; if not, write to the Free Software

 *  Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.

 */

​

/*

 * To achieve a small memory footprint, this version of 'ls' doesn't do any

 * file sorting, and only has the most essential command line switches

 * (i.e., the ones I couldn't live without :-) All features which involve

 * linking in substantial chunks of libc can be disabled.

 *

 * Although I don't really want to add new features to this program to

 * keep it small, I *am* interested to receive bug fixes and ways to make

 * it more portable.

 *

 * KNOWN BUGS:

 * 1. ls -l of a directory doesn't give "total <blocks>" header

 * 2. ls of a symlink to a directory doesn't list directory contents

 * 3. hidden files can make column width too large

 *

 * NON-OPTIMAL BEHAVIOUR:

 * 1. autowidth reads directories twice

 * 2. if you do a short directory listing without filetype characters

 *    appended, there's no need to stat each one

 * PORTABILITY:

 * 1. requires lstat (BSD) - how do you do it without?

 */

​

enum {

    TERMINAL_WIDTH = 80,        /* use 79 if terminal has linefold bug */

    COLUMN_WIDTH = 14,          /* default if AUTOWIDTH not defined */

    COLUMN_GAP = 2,             /* includes the file type char */

};

​

​

/************************************************************************/

​

#include <sys/types.h>

#include <sys/stat.h>

#include <stdio.h>

#include <unistd.h>

#include <dirent.h>

#include <errno.h>

#include <stdio.h>

#include <string.h>

#include <stdlib.h>

#include <fcntl.h>

#include <signal.h>