933 lines
24 KiB
C
933 lines
24 KiB
C
/* vi: set sw=4 ts=4: */
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/*
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* tiny-ls.c version 0.1.0: A minimalist 'ls'
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* Copyright (C) 1996 Brian Candler <B.Candler@pobox.com>
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
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*/
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/*
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* To achieve a small memory footprint, this version of 'ls' doesn't do any
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* file sorting, and only has the most essential command line switches
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* (i.e. the ones I couldn't live without :-) All features which involve
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* linking in substantial chunks of libc can be disabled.
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*
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* Although I don't really want to add new features to this program to
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* keep it small, I *am* interested to receive bug fixes and ways to make
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* it more portable.
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*
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* KNOWN BUGS:
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* 1. ls -l of a directory doesn't give "total <blocks>" header
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* 2. ls of a symlink to a directory doesn't list directory contents
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* 3. hidden files can make column width too large
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*
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* NON-OPTIMAL BEHAVIOUR:
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* 1. autowidth reads directories twice
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* 2. if you do a short directory listing without filetype characters
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* appended, there's no need to stat each one
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* PORTABILITY:
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* 1. requires lstat (BSD) - how do you do it without?
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*/
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enum {
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TERMINAL_WIDTH = 80, /* use 79 if terminal has linefold bug */
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COLUMN_WIDTH = 14, /* default if AUTOWIDTH not defined */
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COLUMN_GAP = 2, /* includes the file type char */
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};
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/************************************************************************/
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#include "busybox.h"
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#include <sys/types.h>
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#include <sys/stat.h>
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#include <stdio.h>
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#include <unistd.h>
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#include <dirent.h>
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#include <errno.h>
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#include <stdio.h>
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#ifdef BB_FEATURE_LS_TIMESTAMPS
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#include <time.h>
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#endif
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#include <string.h>
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#include <stdlib.h>
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#include <fcntl.h>
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#include <signal.h>
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#include <sys/ioctl.h>
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#ifndef MAJOR
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#define MAJOR(dev) (((dev)>>8)&0xff)
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#define MINOR(dev) ((dev)&0xff)
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#endif
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/* what is the overall style of the listing */
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enum {
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STYLE_AUTO = 0,
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STYLE_LONG = 1, /* one record per line, extended info */
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STYLE_SINGLE = 2, /* one record per line */
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STYLE_COLUMNS = 3 /* fill columns */
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};
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/* 51306 lrwxrwxrwx 1 root root 2 May 11 01:43 /bin/view -> vi* */
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/* what file information will be listed */
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#define LIST_INO (1<<0)
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#define LIST_BLOCKS (1<<1)
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#define LIST_MODEBITS (1<<2)
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#define LIST_NLINKS (1<<3)
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#define LIST_ID_NAME (1<<4)
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#define LIST_ID_NUMERIC (1<<5)
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#define LIST_SIZE (1<<6)
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#define LIST_DEV (1<<7)
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#define LIST_DATE_TIME (1<<8)
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#define LIST_FULLTIME (1<<9)
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#define LIST_FILENAME (1<<10)
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#define LIST_SYMLINK (1<<11)
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#define LIST_FILETYPE (1<<12)
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#define LIST_EXEC (1<<13)
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/* what files will be displayed */
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#define DISP_NORMAL (0) /* show normal filenames */
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#define DISP_DIRNAME (1<<0) /* 2 or more items? label directories */
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#define DISP_HIDDEN (1<<1) /* show filenames starting with . */
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#define DISP_DOT (1<<2) /* show . and .. */
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#define DISP_NOLIST (1<<3) /* show directory as itself, not contents */
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#define DISP_RECURSIVE (1<<4) /* show directory and everything below it */
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#define DISP_ROWS (1<<5) /* print across rows */
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#ifdef BB_FEATURE_LS_SORTFILES
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/* how will the files be sorted */
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static const int SORT_FORWARD = 0; /* sort in reverse order */
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static const int SORT_REVERSE = 1; /* sort in reverse order */
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static const int SORT_NAME = 2; /* sort by file name */
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static const int SORT_SIZE = 3; /* sort by file size */
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static const int SORT_ATIME = 4; /* sort by last access time */
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static const int SORT_CTIME = 5; /* sort by last change time */
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static const int SORT_MTIME = 6; /* sort by last modification time */
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static const int SORT_VERSION = 7; /* sort by version */
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static const int SORT_EXT = 8; /* sort by file name extension */
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static const int SORT_DIR = 9; /* sort by file or directory */
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#endif
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#ifdef BB_FEATURE_LS_TIMESTAMPS
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/* which of the three times will be used */
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static const int TIME_MOD = 0;
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static const int TIME_CHANGE = 1;
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static const int TIME_ACCESS = 2;
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#endif
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#define LIST_SHORT (LIST_FILENAME)
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#define LIST_ISHORT (LIST_INO | LIST_FILENAME)
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#define LIST_LONG (LIST_MODEBITS | LIST_NLINKS | LIST_ID_NAME | \
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LIST_SIZE | LIST_DATE_TIME | LIST_FILENAME | \
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LIST_SYMLINK)
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#define LIST_ILONG (LIST_INO | LIST_LONG)
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static const int SPLIT_DIR = 0;
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static const int SPLIT_FILE = 1;
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static const int SPLIT_SUBDIR = 2;
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#define TYPEINDEX(mode) (((mode) >> 12) & 0x0f)
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#define TYPECHAR(mode) ("0pcCd?bB-?l?s???" [TYPEINDEX(mode)])
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#ifdef BB_FEATURE_LS_FILETYPES
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#define APPCHAR(mode) ("\0|\0\0/\0\0\0\0\0@\0=\0\0\0" [TYPEINDEX(mode)])
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#endif
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/*
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* a directory entry and its stat info are stored here
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*/
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struct dnode { /* the basic node */
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char *name; /* the dir entry name */
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char *fullname; /* the dir entry name */
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struct stat dstat; /* the file stat info */
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struct dnode *next; /* point at the next node */
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};
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typedef struct dnode dnode_t;
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struct dnode **list_dir(char *);
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struct dnode **dnalloc(int);
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int list_single(struct dnode *);
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static unsigned int disp_opts;
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static unsigned int style_fmt;
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static unsigned int list_fmt;
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#ifdef BB_FEATURE_LS_SORTFILES
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static unsigned int sort_opts;
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static unsigned int sort_order;
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#endif
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#ifdef BB_FEATURE_LS_TIMESTAMPS
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static unsigned int time_fmt;
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#endif
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#ifdef BB_FEATURE_LS_FOLLOWLINKS
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static unsigned int follow_links=FALSE;
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#endif
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static unsigned short column = 0;
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#ifdef BB_FEATURE_AUTOWIDTH
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static unsigned short terminal_width = TERMINAL_WIDTH;
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static unsigned short column_width = COLUMN_WIDTH;
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static unsigned short tabstops = COLUMN_GAP;
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#else
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static unsigned short column_width = COLUMN_WIDTH;
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#endif
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static int status = EXIT_SUCCESS;
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#ifdef BB_FEATURE_HUMAN_READABLE
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unsigned long ls_disp_hr = KILOBYTE;
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#endif
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static int my_stat(struct dnode *cur)
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{
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#ifdef BB_FEATURE_LS_FOLLOWLINKS
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if (follow_links == TRUE) {
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if (stat(cur->fullname, &cur->dstat)) {
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perror_msg("%s", cur->fullname);
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status = EXIT_FAILURE;
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free(cur->fullname);
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free(cur);
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return -1;
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}
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} else
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#endif
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if (lstat(cur->fullname, &cur->dstat)) {
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perror_msg("%s", cur->fullname);
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status = EXIT_FAILURE;
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free(cur->fullname);
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free(cur);
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return -1;
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}
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return 0;
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}
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static void newline(void)
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{
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if (column > 0) {
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putchar('\n');
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column = 0;
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}
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}
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/*----------------------------------------------------------------------*/
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#ifdef BB_FEATURE_LS_FILETYPES
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static char append_char(mode_t mode)
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{
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if ( !(list_fmt & LIST_FILETYPE))
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return '\0';
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if ((list_fmt & LIST_EXEC) && S_ISREG(mode)
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&& (mode & (S_IXUSR | S_IXGRP | S_IXOTH))) return '*';
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return APPCHAR(mode);
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}
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#endif
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/*----------------------------------------------------------------------*/
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static void nexttabstop( void )
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{
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static short nexttab= 0;
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int n=0;
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if (column > 0) {
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n= nexttab - column;
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if (n < 1) n= 1;
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while (n--) {
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putchar(' ');
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column++;
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}
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}
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nexttab= column + column_width + COLUMN_GAP;
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}
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/*----------------------------------------------------------------------*/
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static int is_subdir(struct dnode *dn)
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{
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return (S_ISDIR(dn->dstat.st_mode) && strcmp(dn->name, ".") != 0 &&
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strcmp(dn->name, "..") != 0);
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}
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int countdirs(struct dnode **dn, int nfiles)
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{
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int i, dirs;
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if (dn==NULL || nfiles < 1) return(0);
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dirs= 0;
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for (i=0; i<nfiles; i++) {
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if (S_ISDIR(dn[i]->dstat.st_mode)) dirs++;
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}
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return(dirs);
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}
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int countsubdirs(struct dnode **dn, int nfiles)
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{
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int i, subdirs;
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if (dn == NULL || nfiles < 1) return 0;
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subdirs = 0;
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for (i = 0; i < nfiles; i++)
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if (is_subdir(dn[i]))
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subdirs++;
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return subdirs;
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}
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int countfiles(struct dnode **dnp)
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{
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int nfiles;
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struct dnode *cur;
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if (dnp == NULL) return(0);
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nfiles= 0;
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for (cur= dnp[0]; cur->next != NULL ; cur= cur->next) nfiles++;
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nfiles++;
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return(nfiles);
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}
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/* get memory to hold an array of pointers */
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struct dnode **dnalloc(int num)
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{
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struct dnode **p;
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if (num < 1) return(NULL);
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p= (struct dnode **)xcalloc((size_t)num, (size_t)(sizeof(struct dnode *)));
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return(p);
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}
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void dfree(struct dnode **dnp)
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{
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struct dnode *cur, *next;
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if(dnp == NULL) return;
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cur=dnp[0];
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while (cur != NULL) {
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if (cur->fullname != NULL) free(cur->fullname); /* free the filename */
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next= cur->next;
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free(cur); /* free the dnode */
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cur= next;
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}
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free(dnp); /* free the array holding the dnode pointers */
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}
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struct dnode **splitdnarray(struct dnode **dn, int nfiles, int which)
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{
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int dncnt, i, d;
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struct dnode **dnp;
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if (dn==NULL || nfiles < 1) return(NULL);
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/* count how many dirs and regular files there are */
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if (which == SPLIT_SUBDIR)
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dncnt = countsubdirs(dn, nfiles);
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else {
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dncnt= countdirs(dn, nfiles); /* assume we are looking for dirs */
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if (which == SPLIT_FILE)
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dncnt= nfiles - dncnt; /* looking for files */
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}
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/* allocate a file array and a dir array */
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dnp= dnalloc(dncnt);
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/* copy the entrys into the file or dir array */
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for (d= i=0; i<nfiles; i++) {
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if (which == SPLIT_DIR) {
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if (S_ISDIR(dn[i]->dstat.st_mode)) {
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dnp[d++]= dn[i];
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} /* else skip the file */
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} else if (which == SPLIT_SUBDIR) {
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if (is_subdir(dn[i])) {
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dnp[d++]= dn[i];
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} /* else skip the file or dir */
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} else {
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if (!(S_ISDIR(dn[i]->dstat.st_mode))) {
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dnp[d++]= dn[i];
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} /* else skip the dir */
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}
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}
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return(dnp);
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}
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/*----------------------------------------------------------------------*/
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#ifdef BB_FEATURE_LS_SORTFILES
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int sortcmp(struct dnode *d1, struct dnode *d2)
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{
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int cmp, dif;
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cmp= 0;
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if (sort_opts == SORT_SIZE) {
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dif= (int)(d1->dstat.st_size - d2->dstat.st_size);
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} else if (sort_opts == SORT_ATIME) {
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dif= (int)(d1->dstat.st_atime - d2->dstat.st_atime);
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} else if (sort_opts == SORT_CTIME) {
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dif= (int)(d1->dstat.st_ctime - d2->dstat.st_ctime);
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} else if (sort_opts == SORT_MTIME) {
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dif= (int)(d1->dstat.st_mtime - d2->dstat.st_mtime);
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} else if (sort_opts == SORT_DIR) {
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dif= S_ISDIR(d1->dstat.st_mode) - S_ISDIR(d2->dstat.st_mode);
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/* } else if (sort_opts == SORT_VERSION) { */
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/* } else if (sort_opts == SORT_EXT) { */
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} else { /* assume SORT_NAME */
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dif= 0;
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}
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if (dif > 0) cmp= -1;
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if (dif < 0) cmp= 1;
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if (dif == 0) {
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/* sort by name- may be a tie_breaker for time or size cmp */
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dif= strcmp(d1->name, d2->name);
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if (dif > 0) cmp= 1;
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if (dif < 0) cmp= -1;
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}
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if (sort_order == SORT_REVERSE) {
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cmp= -1 * cmp;
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}
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return(cmp);
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}
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/*----------------------------------------------------------------------*/
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void shellsort(struct dnode **dn, int size)
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{
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struct dnode *temp;
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int gap, i, j;
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/* shell short the array */
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if(dn==NULL || size < 2) return;
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for (gap= size/2; gap>0; gap /=2) {
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for (i=gap; i<size; i++) {
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for (j= i-gap; j>=0; j-=gap) {
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if (sortcmp(dn[j], dn[j+gap]) <= 0)
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break;
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/* they are out of order, swap them */
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temp= dn[j];
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dn[j]= dn[j+gap];
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dn[j+gap]= temp;
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}
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}
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}
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}
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#endif
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/*----------------------------------------------------------------------*/
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void showfiles(struct dnode **dn, int nfiles)
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{
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int i, ncols, nrows, row, nc;
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#ifdef BB_FEATURE_AUTOWIDTH
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int len;
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#endif
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if(dn==NULL || nfiles < 1) return;
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#ifdef BB_FEATURE_AUTOWIDTH
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/* find the longest file name- use that as the column width */
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column_width= 0;
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for (i=0; i<nfiles; i++) {
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len= strlen(dn[i]->name) +
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((list_fmt & LIST_INO) ? 8 : 0) +
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((list_fmt & LIST_BLOCKS) ? 5 : 0)
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;
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if (column_width < len)
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column_width= len;
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}
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if (column_width >= 6)
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ncols = (int)(terminal_width / (column_width + COLUMN_GAP));
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else {
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ncols = 1;
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column_width = COLUMN_WIDTH;
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}
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#else
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ncols= TERMINAL_WIDTH;
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#endif
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switch (style_fmt) {
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case STYLE_LONG: /* one record per line, extended info */
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case STYLE_SINGLE: /* one record per line */
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ncols= 1;
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break;
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}
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|
|
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if (ncols > 1) {
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nrows = nfiles / ncols;
|
|
} else {
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nrows = nfiles;
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|
ncols = 1;
|
|
}
|
|
if ((nrows * ncols) < nfiles) nrows++; /* round up fractionals */
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|
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if (nrows > nfiles) nrows= nfiles;
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for (row=0; row<nrows; row++) {
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for (nc=0; nc<ncols; nc++) {
|
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/* reach into the array based on the column and row */
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i= (nc * nrows) + row; /* assume display by column */
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if (disp_opts & DISP_ROWS)
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i= (row * ncols) + nc; /* display across row */
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if (i < nfiles) {
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nexttabstop();
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list_single(dn[i]);
|
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}
|
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}
|
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newline();
|
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}
|
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}
|
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|
|
/*----------------------------------------------------------------------*/
|
|
void showdirs(struct dnode **dn, int ndirs)
|
|
{
|
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int i, nfiles;
|
|
struct dnode **subdnp;
|
|
#ifdef BB_FEATURE_LS_RECURSIVE
|
|
int dndirs;
|
|
struct dnode **dnd;
|
|
#endif
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|
|
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if (dn==NULL || ndirs < 1) return;
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|
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for (i=0; i<ndirs; i++) {
|
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if (disp_opts & (DISP_DIRNAME | DISP_RECURSIVE)) {
|
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printf("\n%s:\n", dn[i]->fullname);
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}
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subdnp= list_dir(dn[i]->fullname);
|
|
nfiles= countfiles(subdnp);
|
|
if (nfiles > 0) {
|
|
/* list all files at this level */
|
|
#ifdef BB_FEATURE_LS_SORTFILES
|
|
shellsort(subdnp, nfiles);
|
|
#endif
|
|
showfiles(subdnp, nfiles);
|
|
#ifdef BB_FEATURE_LS_RECURSIVE
|
|
if (disp_opts & DISP_RECURSIVE) {
|
|
/* recursive- list the sub-dirs */
|
|
dnd= splitdnarray(subdnp, nfiles, SPLIT_SUBDIR);
|
|
dndirs= countsubdirs(subdnp, nfiles);
|
|
if (dndirs > 0) {
|
|
#ifdef BB_FEATURE_LS_SORTFILES
|
|
shellsort(dnd, dndirs);
|
|
#endif
|
|
showdirs(dnd, dndirs);
|
|
free(dnd); /* free the array of dnode pointers to the dirs */
|
|
}
|
|
}
|
|
dfree(subdnp); /* free the dnodes and the fullname mem */
|
|
#endif
|
|
}
|
|
}
|
|
}
|
|
|
|
/*----------------------------------------------------------------------*/
|
|
struct dnode **list_dir(char *path)
|
|
{
|
|
struct dnode *dn, *cur, **dnp;
|
|
struct dirent *entry;
|
|
DIR *dir;
|
|
int i, nfiles;
|
|
|
|
if (path==NULL) return(NULL);
|
|
|
|
dn= NULL;
|
|
nfiles= 0;
|
|
dir = opendir(path);
|
|
if (dir == NULL) {
|
|
perror_msg("%s", path);
|
|
status = EXIT_FAILURE;
|
|
return(NULL); /* could not open the dir */
|
|
}
|
|
while ((entry = readdir(dir)) != NULL) {
|
|
/* are we going to list the file- it may be . or .. or a hidden file */
|
|
if ((strcmp(entry->d_name, ".")==0) && !(disp_opts & DISP_DOT)) continue;
|
|
if ((strcmp(entry->d_name, "..")==0) && !(disp_opts & DISP_DOT)) continue;
|
|
if ((entry->d_name[0] == '.') && !(disp_opts & DISP_HIDDEN)) continue;
|
|
cur= (struct dnode *)xmalloc(sizeof(struct dnode));
|
|
cur->fullname = xmalloc(strlen(path)+1+strlen(entry->d_name)+1);
|
|
strcpy(cur->fullname, path);
|
|
if (cur->fullname[strlen(cur->fullname)-1] != '/')
|
|
strcat(cur->fullname, "/");
|
|
cur->name= cur->fullname + strlen(cur->fullname);
|
|
strcat(cur->fullname, entry->d_name);
|
|
if (my_stat(cur))
|
|
continue;
|
|
cur->next= dn;
|
|
dn= cur;
|
|
nfiles++;
|
|
}
|
|
closedir(dir);
|
|
|
|
/* now that we know how many files there are
|
|
** allocate memory for an array to hold dnode pointers
|
|
*/
|
|
if (nfiles < 1) return(NULL);
|
|
dnp= dnalloc(nfiles);
|
|
for (i=0, cur=dn; i<nfiles; i++) {
|
|
dnp[i]= cur; /* save pointer to node in array */
|
|
cur= cur->next;
|
|
}
|
|
|
|
return(dnp);
|
|
}
|
|
|
|
/*----------------------------------------------------------------------*/
|
|
int list_single(struct dnode *dn)
|
|
{
|
|
int i, len;
|
|
char scratch[BUFSIZ + 1];
|
|
#ifdef BB_FEATURE_LS_TIMESTAMPS
|
|
char *filetime;
|
|
time_t ttime, age;
|
|
#endif
|
|
#if defined (BB_FEATURE_LS_FILETYPES)
|
|
struct stat info;
|
|
#endif
|
|
#ifdef BB_FEATURE_LS_FILETYPES
|
|
char append;
|
|
#endif
|
|
|
|
if (dn==NULL || dn->fullname==NULL) return(0);
|
|
|
|
#ifdef BB_FEATURE_LS_TIMESTAMPS
|
|
ttime= dn->dstat.st_mtime; /* the default time */
|
|
if (time_fmt & TIME_ACCESS) ttime= dn->dstat.st_atime;
|
|
if (time_fmt & TIME_CHANGE) ttime= dn->dstat.st_ctime;
|
|
filetime= ctime(&ttime);
|
|
#endif
|
|
#ifdef BB_FEATURE_LS_FILETYPES
|
|
append = append_char(dn->dstat.st_mode);
|
|
#endif
|
|
|
|
for (i=0; i<=31; i++) {
|
|
switch (list_fmt & (1<<i)) {
|
|
case LIST_INO:
|
|
printf("%7ld ", dn->dstat.st_ino);
|
|
column += 8;
|
|
break;
|
|
case LIST_BLOCKS:
|
|
#ifdef BB_FEATURE_HUMAN_READABLE
|
|
fprintf(stdout, "%5s ", format(dn->dstat.st_blocks>>1, 1));
|
|
#else
|
|
#if _FILE_OFFSET_BITS == 64
|
|
printf("%4lld ", dn->dstat.st_blocks>>1);
|
|
#else
|
|
printf("%4ld ", dn->dstat.st_blocks>>1);
|
|
#endif
|
|
#endif
|
|
column += 5;
|
|
break;
|
|
case LIST_MODEBITS:
|
|
printf("%10s", (char *)mode_string(dn->dstat.st_mode));
|
|
column += 10;
|
|
break;
|
|
case LIST_NLINKS:
|
|
printf("%4d ", dn->dstat.st_nlink);
|
|
column += 10;
|
|
break;
|
|
case LIST_ID_NAME:
|
|
#ifdef BB_FEATURE_LS_USERNAME
|
|
my_getpwuid(scratch, dn->dstat.st_uid);
|
|
printf("%-8.8s ", scratch);
|
|
my_getgrgid(scratch, dn->dstat.st_gid);
|
|
printf("%-8.8s", scratch);
|
|
column += 17;
|
|
break;
|
|
#endif
|
|
case LIST_ID_NUMERIC:
|
|
printf("%-8d %-8d", dn->dstat.st_uid, dn->dstat.st_gid);
|
|
column += 17;
|
|
break;
|
|
case LIST_SIZE:
|
|
case LIST_DEV:
|
|
if (S_ISBLK(dn->dstat.st_mode) || S_ISCHR(dn->dstat.st_mode)) {
|
|
printf("%4d, %3d ", (int)MAJOR(dn->dstat.st_rdev), (int)MINOR(dn->dstat.st_rdev));
|
|
} else {
|
|
#ifdef BB_FEATURE_HUMAN_READABLE
|
|
fprintf(stdout, "%9s ", format(dn->dstat.st_size, ls_disp_hr));
|
|
#else
|
|
#if _FILE_OFFSET_BITS == 64
|
|
printf("%9lld ", dn->dstat.st_size>>1);
|
|
#else
|
|
printf("%9ld ", dn->dstat.st_size>>1);
|
|
#endif
|
|
#endif
|
|
}
|
|
column += 10;
|
|
break;
|
|
#ifdef BB_FEATURE_LS_TIMESTAMPS
|
|
case LIST_FULLTIME:
|
|
case LIST_DATE_TIME:
|
|
if (list_fmt & LIST_FULLTIME) {
|
|
printf("%24.24s ", filetime);
|
|
column += 25;
|
|
break;
|
|
}
|
|
age = time(NULL) - ttime;
|
|
printf("%6.6s ", filetime+4);
|
|
if (age < 3600L * 24 * 365 / 2 && age > -15 * 60) {
|
|
/* hh:mm if less than 6 months old */
|
|
printf("%5.5s ", filetime+11);
|
|
} else {
|
|
printf(" %4.4s ", filetime+20);
|
|
}
|
|
column += 13;
|
|
break;
|
|
#endif
|
|
case LIST_FILENAME:
|
|
printf("%s", dn->name);
|
|
column += strlen(dn->name);
|
|
break;
|
|
case LIST_SYMLINK:
|
|
if (S_ISLNK(dn->dstat.st_mode)) {
|
|
len= readlink(dn->fullname, scratch, (sizeof scratch)-1);
|
|
if (len > 0) {
|
|
scratch[len]= '\0';
|
|
printf(" -> %s", scratch);
|
|
#ifdef BB_FEATURE_LS_FILETYPES
|
|
if (!stat(dn->fullname, &info)) {
|
|
append = append_char(info.st_mode);
|
|
}
|
|
#endif
|
|
column += len+4;
|
|
}
|
|
}
|
|
break;
|
|
#ifdef BB_FEATURE_LS_FILETYPES
|
|
case LIST_FILETYPE:
|
|
if (append != '\0') {
|
|
printf("%1c", append);
|
|
column++;
|
|
}
|
|
break;
|
|
#endif
|
|
}
|
|
}
|
|
|
|
return(0);
|
|
}
|
|
|
|
/*----------------------------------------------------------------------*/
|
|
extern int ls_main(int argc, char **argv)
|
|
{
|
|
struct dnode **dnf, **dnd;
|
|
int dnfiles, dndirs;
|
|
struct dnode *dn, *cur, **dnp;
|
|
int i, nfiles;
|
|
int opt;
|
|
int oi, ac;
|
|
char **av;
|
|
#ifdef BB_FEATURE_AUTOWIDTH
|
|
struct winsize win = { 0, 0, 0, 0 };
|
|
#endif
|
|
|
|
disp_opts= DISP_NORMAL;
|
|
style_fmt= STYLE_AUTO;
|
|
list_fmt= LIST_SHORT;
|
|
#ifdef BB_FEATURE_LS_SORTFILES
|
|
sort_opts= SORT_NAME;
|
|
sort_order= SORT_FORWARD;
|
|
#endif
|
|
#ifdef BB_FEATURE_LS_TIMESTAMPS
|
|
time_fmt= TIME_MOD;
|
|
#endif
|
|
#ifdef BB_FEATURE_AUTOWIDTH
|
|
ioctl(fileno(stdout), TIOCGWINSZ, &win);
|
|
if (win.ws_row > 4)
|
|
column_width = win.ws_row - 2;
|
|
if (win.ws_col > 0)
|
|
terminal_width = win.ws_col - 1;
|
|
#endif
|
|
nfiles=0;
|
|
|
|
/* process options */
|
|
while ((opt = getopt(argc, argv, "1AaCdgilnsx"
|
|
#ifdef BB_FEATURE_AUTOWIDTH
|
|
"T:w:"
|
|
#endif
|
|
#ifdef BB_FEATURE_LS_FILETYPES
|
|
"Fp"
|
|
#endif
|
|
#ifdef BB_FEATURE_LS_RECURSIVE
|
|
"R"
|
|
#endif
|
|
#ifdef BB_FEATURE_LS_SORTFILES
|
|
"rSvX"
|
|
#endif
|
|
#ifdef BB_FEATURE_LS_TIMESTAMPS
|
|
"cetu"
|
|
#endif
|
|
#ifdef BB_FEATURE_LS_FOLLOWLINKS
|
|
"L"
|
|
#endif
|
|
#ifdef BB_FEATURE_HUMAN_READABLE
|
|
"h"
|
|
#endif
|
|
"k")) > 0) {
|
|
switch (opt) {
|
|
case '1': style_fmt = STYLE_SINGLE; break;
|
|
case 'A': disp_opts |= DISP_HIDDEN; break;
|
|
case 'a': disp_opts |= DISP_HIDDEN | DISP_DOT; break;
|
|
case 'C': style_fmt = STYLE_COLUMNS; break;
|
|
case 'd': disp_opts |= DISP_NOLIST; break;
|
|
case 'g': /* ignore -- for ftp servers */ break;
|
|
case 'i': list_fmt |= LIST_INO; break;
|
|
case 'l':
|
|
style_fmt = STYLE_LONG;
|
|
list_fmt |= LIST_LONG;
|
|
#ifdef BB_FEATURE_HUMAN_READABLE
|
|
ls_disp_hr = 1;
|
|
#endif
|
|
break;
|
|
case 'n': list_fmt |= LIST_ID_NUMERIC; break;
|
|
case 's': list_fmt |= LIST_BLOCKS; break;
|
|
case 'x': disp_opts = DISP_ROWS; break;
|
|
#ifdef BB_FEATURE_LS_FILETYPES
|
|
case 'F': list_fmt |= LIST_FILETYPE | LIST_EXEC; break;
|
|
case 'p': list_fmt |= LIST_FILETYPE; break;
|
|
#endif
|
|
#ifdef BB_FEATURE_LS_RECURSIVE
|
|
case 'R': disp_opts |= DISP_RECURSIVE; break;
|
|
#endif
|
|
#ifdef BB_FEATURE_LS_SORTFILES
|
|
case 'r': sort_order |= SORT_REVERSE; break;
|
|
case 'S': sort_opts= SORT_SIZE; break;
|
|
case 'v': sort_opts= SORT_VERSION; break;
|
|
case 'X': sort_opts= SORT_EXT; break;
|
|
#endif
|
|
#ifdef BB_FEATURE_LS_TIMESTAMPS
|
|
case 'e': list_fmt |= LIST_FULLTIME; break;
|
|
case 'c':
|
|
time_fmt = TIME_CHANGE;
|
|
#ifdef BB_FEATURE_LS_SORTFILES
|
|
sort_opts= SORT_CTIME;
|
|
#endif
|
|
break;
|
|
case 'u':
|
|
time_fmt = TIME_ACCESS;
|
|
#ifdef BB_FEATURE_LS_SORTFILES
|
|
sort_opts= SORT_ATIME;
|
|
#endif
|
|
break;
|
|
case 't':
|
|
#ifdef BB_FEATURE_LS_SORTFILES
|
|
sort_opts= SORT_MTIME;
|
|
#endif
|
|
break;
|
|
#endif
|
|
#ifdef BB_FEATURE_LS_FOLLOWLINKS
|
|
case 'L': follow_links= TRUE; break;
|
|
#endif
|
|
#ifdef BB_FEATURE_AUTOWIDTH
|
|
case 'T': tabstops= atoi(optarg); break;
|
|
case 'w': terminal_width= atoi(optarg); break;
|
|
#endif
|
|
#ifdef BB_FEATURE_HUMAN_READABLE
|
|
case 'h': ls_disp_hr = 0; break;
|
|
case 'k': ls_disp_hr = KILOBYTE; break;
|
|
#else
|
|
case 'k': break;
|
|
#endif
|
|
default:
|
|
goto print_usage_message;
|
|
}
|
|
}
|
|
|
|
/* sort out which command line options take precedence */
|
|
#ifdef BB_FEATURE_LS_RECURSIVE
|
|
if (disp_opts & DISP_NOLIST)
|
|
disp_opts &= ~DISP_RECURSIVE; /* no recurse if listing only dir */
|
|
#endif
|
|
#if defined (BB_FEATURE_LS_TIMESTAMPS) && defined (BB_FEATURE_LS_SORTFILES)
|
|
if (time_fmt & TIME_CHANGE) sort_opts= SORT_CTIME;
|
|
if (time_fmt & TIME_ACCESS) sort_opts= SORT_ATIME;
|
|
#endif
|
|
if (style_fmt != STYLE_LONG)
|
|
list_fmt &= ~LIST_ID_NUMERIC; /* numeric uid only for long list */
|
|
#ifdef BB_FEATURE_LS_USERNAME
|
|
if (style_fmt == STYLE_LONG && (list_fmt & LIST_ID_NUMERIC))
|
|
list_fmt &= ~LIST_ID_NAME; /* don't list names if numeric uid */
|
|
#endif
|
|
|
|
/* choose a display format */
|
|
if (style_fmt == STYLE_AUTO)
|
|
style_fmt = isatty(fileno(stdout)) ? STYLE_COLUMNS : STYLE_SINGLE;
|
|
|
|
/*
|
|
* when there are no cmd line args we have to supply a default "." arg.
|
|
* we will create a second argv array, "av" that will hold either
|
|
* our created "." arg, or the real cmd line args. The av array
|
|
* just holds the pointers- we don't move the date the pointers
|
|
* point to.
|
|
*/
|
|
ac= argc - optind; /* how many cmd line args are left */
|
|
if (ac < 1) {
|
|
av= (char **)xcalloc((size_t)1, (size_t)(sizeof(char *)));
|
|
av[0]= xstrdup(".");
|
|
ac=1;
|
|
} else {
|
|
av= (char **)xcalloc((size_t)ac, (size_t)(sizeof(char *)));
|
|
for (oi=0 ; oi < ac; oi++) {
|
|
av[oi]= argv[optind++]; /* copy pointer to real cmd line arg */
|
|
}
|
|
}
|
|
|
|
/* now, everything is in the av array */
|
|
if (ac > 1)
|
|
disp_opts |= DISP_DIRNAME; /* 2 or more items? label directories */
|
|
|
|
/* stuff the command line file names into an dnode array */
|
|
dn=NULL;
|
|
for (oi=0 ; oi < ac; oi++) {
|
|
cur= (struct dnode *)xmalloc(sizeof(struct dnode));
|
|
cur->fullname= xstrdup(av[oi]);
|
|
cur->name= cur->fullname;
|
|
if (my_stat(cur))
|
|
continue;
|
|
cur->next= dn;
|
|
dn= cur;
|
|
nfiles++;
|
|
}
|
|
|
|
/* now that we know how many files there are
|
|
** allocate memory for an array to hold dnode pointers
|
|
*/
|
|
dnp= dnalloc(nfiles);
|
|
for (i=0, cur=dn; i<nfiles; i++) {
|
|
dnp[i]= cur; /* save pointer to node in array */
|
|
cur= cur->next;
|
|
}
|
|
|
|
|
|
if (disp_opts & DISP_NOLIST) {
|
|
#ifdef BB_FEATURE_LS_SORTFILES
|
|
shellsort(dnp, nfiles);
|
|
#endif
|
|
if (nfiles > 0) showfiles(dnp, nfiles);
|
|
} else {
|
|
dnd= splitdnarray(dnp, nfiles, SPLIT_DIR);
|
|
dnf= splitdnarray(dnp, nfiles, SPLIT_FILE);
|
|
dndirs= countdirs(dnp, nfiles);
|
|
dnfiles= nfiles - dndirs;
|
|
if (dnfiles > 0) {
|
|
#ifdef BB_FEATURE_LS_SORTFILES
|
|
shellsort(dnf, dnfiles);
|
|
#endif
|
|
showfiles(dnf, dnfiles);
|
|
}
|
|
if (dndirs > 0) {
|
|
#ifdef BB_FEATURE_LS_SORTFILES
|
|
shellsort(dnd, dndirs);
|
|
#endif
|
|
showdirs(dnd, dndirs);
|
|
}
|
|
}
|
|
return(status);
|
|
|
|
print_usage_message:
|
|
show_usage();
|
|
}
|