1045 lines
26 KiB
C
1045 lines
26 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_GAP = 2, /* includes the file type char */
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};
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/************************************************************************/
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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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#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 <termios.h>
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#include <sys/ioctl.h>
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#include "busybox.h"
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#ifdef CONFIG_FEATURE_LS_TIMESTAMPS
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#include <time.h>
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#endif
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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 CONFIG_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 CONFIG_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 | LIST_SIZE | \
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LIST_DATE_TIME | LIST_FILENAME | 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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#if defined(CONFIG_FEATURE_LS_FILETYPES) || defined(CONFIG_FEATURE_LS_COLOR)
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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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/* colored LS support by JaWi, janwillem.janssen@lxtreme.nl */
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#ifdef CONFIG_FEATURE_LS_COLOR
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static int show_color = 0;
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#define COLOR(mode) ("\000\043\043\043\042\000\043\043"\
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"\000\000\044\000\043\000\000\040" [TYPEINDEX(mode)])
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#define ATTR(mode) ("\00\00\01\00\01\00\01\00"\
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"\00\00\01\00\01\00\00\01" [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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static struct dnode **list_dir(const char *);
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static struct dnode **dnalloc(int);
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static 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 CONFIG_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 CONFIG_FEATURE_LS_TIMESTAMPS
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static unsigned int time_fmt;
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#endif
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#ifdef CONFIG_FEATURE_LS_FOLLOWLINKS
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static unsigned int follow_links = FALSE;
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#endif
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#ifdef CONFIG_FEATURE_AUTOWIDTH
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static unsigned short terminal_width = TERMINAL_WIDTH;
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static unsigned short tabstops = COLUMN_GAP;
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#else
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#define tabstops COLUMN_GAP
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#define terminal_width TERMINAL_WIDTH
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#endif
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static int status = EXIT_SUCCESS;
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#ifdef CONFIG_FEATURE_HUMAN_READABLE
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static unsigned long ls_disp_hr = 0;
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#endif
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static struct dnode *my_stat(char *fullname, char *name)
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{
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struct stat dstat;
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struct dnode *cur;
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#ifdef CONFIG_FEATURE_LS_FOLLOWLINKS
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if (follow_links) {
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if (stat(fullname, &dstat)) {
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perror_msg("%s", fullname);
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status = EXIT_FAILURE;
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return 0;
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}
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} else
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#endif
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if (lstat(fullname, &dstat)) {
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perror_msg("%s", fullname);
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status = EXIT_FAILURE;
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return 0;
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}
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cur = (struct dnode *) xmalloc(sizeof(struct dnode));
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cur->fullname = fullname;
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cur->name = name;
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cur->dstat = dstat;
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return cur;
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}
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/*----------------------------------------------------------------------*/
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#ifdef CONFIG_FEATURE_LS_COLOR
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static char fgcolor(mode_t mode)
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{
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/* Check wheter the file is existing (if so, color it red!) */
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if (errno == ENOENT) {
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return '\037';
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}
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if (LIST_EXEC && S_ISREG(mode)
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&& (mode & (S_IXUSR | S_IXGRP | S_IXOTH)))
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return COLOR(0xF000); /* File is executable ... */
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return COLOR(mode);
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}
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/*----------------------------------------------------------------------*/
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static char bgcolor(mode_t mode)
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{
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if (LIST_EXEC && S_ISREG(mode)
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&& (mode & (S_IXUSR | S_IXGRP | S_IXOTH)))
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return ATTR(0xF000); /* File is executable ... */
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return ATTR(mode);
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}
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#endif
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/*----------------------------------------------------------------------*/
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#if defined(CONFIG_FEATURE_LS_FILETYPES) || defined(CONFIG_FEATURE_LS_COLOR)
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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)))
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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 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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static 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)
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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))
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dirs++;
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}
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return (dirs);
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}
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static 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)
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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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static 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)
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return (0);
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nfiles = 0;
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for (cur = dnp[0]; cur->next != NULL; cur = cur->next)
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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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static struct dnode **dnalloc(int num)
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{
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struct dnode **p;
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if (num < 1)
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return (NULL);
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p = (struct dnode **) xcalloc((size_t) num,
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(size_t) (sizeof(struct dnode *)));
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return (p);
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}
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#ifdef CONFIG_FEATURE_LS_RECURSIVE
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static void dfree(struct dnode **dnp)
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{
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struct dnode *cur, *next;
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if (dnp == NULL)
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return;
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cur = dnp[0];
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while (cur != NULL) {
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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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#endif
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static 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)
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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 CONFIG_FEATURE_LS_SORTFILES
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static 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)
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cmp = -1;
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if (dif < 0)
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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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#ifdef CONFIG_LOCALE_SUPPORT
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dif = strcoll(d1->name, d2->name);
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#else
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dif = strcmp(d1->name, d2->name);
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#endif
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if (dif > 0)
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cmp = 1;
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if (dif < 0)
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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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static 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)
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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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static 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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int column = 0;
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int nexttab = 0;
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int column_width = 0; /* for STYLE_LONG and STYLE_SINGLE not used */
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if (dn == NULL || nfiles < 1)
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return;
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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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default:
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/* find the longest file name- use that as the column width */
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for (i = 0; i < nfiles; i++) {
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int 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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if (column_width < len)
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column_width = len;
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}
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column_width += tabstops;
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ncols = (int) (terminal_width / column_width);
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}
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if (ncols > 1) {
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nrows = nfiles / ncols;
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if ((nrows * ncols) < nfiles)
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nrows++; /* round up fractionals */
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} else {
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nrows = nfiles;
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ncols = 1;
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}
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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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if (column > 0) {
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nexttab -= column;
|
|
while (nexttab--) {
|
|
putchar(' ');
|
|
column++;
|
|
}
|
|
}
|
|
nexttab = column + column_width;
|
|
column += list_single(dn[i]);
|
|
}
|
|
}
|
|
putchar('\n');
|
|
column = 0;
|
|
}
|
|
}
|
|
|
|
/*----------------------------------------------------------------------*/
|
|
static void showdirs(struct dnode **dn, int ndirs)
|
|
{
|
|
int i, nfiles;
|
|
struct dnode **subdnp;
|
|
|
|
#ifdef CONFIG_FEATURE_LS_RECURSIVE
|
|
int dndirs;
|
|
struct dnode **dnd;
|
|
#endif
|
|
|
|
if (dn == NULL || ndirs < 1)
|
|
return;
|
|
|
|
for (i = 0; i < ndirs; i++) {
|
|
if (disp_opts & (DISP_DIRNAME | DISP_RECURSIVE)) {
|
|
printf("\n%s:\n", dn[i]->fullname);
|
|
}
|
|
subdnp = list_dir(dn[i]->fullname);
|
|
nfiles = countfiles(subdnp);
|
|
if (nfiles > 0) {
|
|
/* list all files at this level */
|
|
#ifdef CONFIG_FEATURE_LS_SORTFILES
|
|
shellsort(subdnp, nfiles);
|
|
#endif
|
|
showfiles(subdnp, nfiles);
|
|
#ifdef CONFIG_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 CONFIG_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
|
|
}
|
|
}
|
|
}
|
|
|
|
/*----------------------------------------------------------------------*/
|
|
static struct dnode **list_dir(const 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) {
|
|
char *fullname;
|
|
|
|
/* are we going to list the file- it may be . or .. or a hidden file */
|
|
if (entry->d_name[0] == '.') {
|
|
if ((entry->d_name[1] == 0 || (
|
|
entry->d_name[1] == '.'
|
|
&& entry->d_name[2] == 0))
|
|
&& !(disp_opts & DISP_DOT))
|
|
continue;
|
|
if (!(disp_opts & DISP_HIDDEN))
|
|
continue;
|
|
}
|
|
fullname = concat_path_file(path, entry->d_name);
|
|
cur = my_stat(fullname, strrchr(fullname, '/') + 1);
|
|
if (!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 (dn == NULL)
|
|
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);
|
|
}
|
|
|
|
/*----------------------------------------------------------------------*/
|
|
static int list_single(struct dnode *dn)
|
|
{
|
|
int i, column = 0;
|
|
|
|
#ifdef CONFIG_FEATURE_LS_USERNAME
|
|
char scratch[16];
|
|
#endif
|
|
#ifdef CONFIG_FEATURE_LS_TIMESTAMPS
|
|
char *filetime;
|
|
time_t ttime, age;
|
|
#endif
|
|
#if defined(CONFIG_FEATURE_LS_FILETYPES) || defined (CONFIG_FEATURE_LS_COLOR)
|
|
struct stat info;
|
|
char append;
|
|
#endif
|
|
|
|
if (dn->fullname == NULL)
|
|
return (0);
|
|
|
|
#ifdef CONFIG_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 CONFIG_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:
|
|
column += printf("%7ld ", (long int) dn->dstat.st_ino);
|
|
break;
|
|
case LIST_BLOCKS:
|
|
#if _FILE_OFFSET_BITS == 64
|
|
column += printf("%4lld ", dn->dstat.st_blocks >> 1);
|
|
#else
|
|
column += printf("%4ld ", dn->dstat.st_blocks >> 1);
|
|
#endif
|
|
break;
|
|
case LIST_MODEBITS:
|
|
column += printf("%-10s ", (char *) mode_string(dn->dstat.st_mode));
|
|
break;
|
|
case LIST_NLINKS:
|
|
column += printf("%4ld ", (long) dn->dstat.st_nlink);
|
|
break;
|
|
case LIST_ID_NAME:
|
|
#ifdef CONFIG_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:
|
|
column += printf("%-8d %-8d", dn->dstat.st_uid, dn->dstat.st_gid);
|
|
break;
|
|
case LIST_SIZE:
|
|
case LIST_DEV:
|
|
if (S_ISBLK(dn->dstat.st_mode) || S_ISCHR(dn->dstat.st_mode)) {
|
|
column += printf("%4d, %3d ", (int) MAJOR(dn->dstat.st_rdev),
|
|
(int) MINOR(dn->dstat.st_rdev));
|
|
} else {
|
|
#ifdef CONFIG_FEATURE_HUMAN_READABLE
|
|
if (ls_disp_hr == TRUE) {
|
|
column += printf("%9s ",
|
|
make_human_readable_str(dn->dstat.st_size, 1, 0));
|
|
} else
|
|
#endif
|
|
{
|
|
#if _FILE_OFFSET_BITS == 64
|
|
column += printf("%9lld ", (long long) dn->dstat.st_size);
|
|
#else
|
|
column += printf("%9ld ", dn->dstat.st_size);
|
|
#endif
|
|
}
|
|
}
|
|
break;
|
|
#ifdef CONFIG_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:
|
|
#ifdef CONFIG_FEATURE_LS_COLOR
|
|
errno = 0;
|
|
if (show_color && !lstat(dn->fullname, &info)) {
|
|
printf("\033[%d;%dm", bgcolor(info.st_mode),
|
|
fgcolor(info.st_mode));
|
|
}
|
|
#endif
|
|
column += printf("%s", dn->name);
|
|
#ifdef CONFIG_FEATURE_LS_COLOR
|
|
if (show_color) {
|
|
printf("\033[0m");
|
|
}
|
|
#endif
|
|
break;
|
|
case LIST_SYMLINK:
|
|
if (S_ISLNK(dn->dstat.st_mode)) {
|
|
char *lpath = xreadlink(dn->fullname);
|
|
|
|
if (lpath) {
|
|
printf(" -> ");
|
|
#if defined(CONFIG_FEATURE_LS_FILETYPES) || defined (CONFIG_FEATURE_LS_COLOR)
|
|
if (!stat(dn->fullname, &info)) {
|
|
append = append_char(info.st_mode);
|
|
}
|
|
#endif
|
|
#ifdef CONFIG_FEATURE_LS_COLOR
|
|
if (show_color) {
|
|
errno = 0;
|
|
printf("\033[%d;%dm", bgcolor(info.st_mode),
|
|
fgcolor(info.st_mode));
|
|
}
|
|
#endif
|
|
column += printf("%s", lpath) + 4;
|
|
#ifdef CONFIG_FEATURE_LS_COLOR
|
|
if (show_color) {
|
|
printf("\033[0m");
|
|
}
|
|
#endif
|
|
free(lpath);
|
|
}
|
|
}
|
|
break;
|
|
#ifdef CONFIG_FEATURE_LS_FILETYPES
|
|
case LIST_FILETYPE:
|
|
if (append != '\0') {
|
|
printf("%1c", append);
|
|
column++;
|
|
}
|
|
break;
|
|
#endif
|
|
}
|
|
}
|
|
|
|
return column;
|
|
}
|
|
|
|
/*----------------------------------------------------------------------*/
|
|
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 CONFIG_FEATURE_AUTOWIDTH
|
|
struct winsize win = { 0, 0, 0, 0 };
|
|
#endif
|
|
|
|
disp_opts = DISP_NORMAL;
|
|
style_fmt = STYLE_AUTO;
|
|
list_fmt = LIST_SHORT;
|
|
#ifdef CONFIG_FEATURE_LS_SORTFILES
|
|
sort_opts = SORT_NAME;
|
|
sort_order = SORT_FORWARD;
|
|
#endif
|
|
#ifdef CONFIG_FEATURE_LS_TIMESTAMPS
|
|
time_fmt = TIME_MOD;
|
|
#endif
|
|
#ifdef CONFIG_FEATURE_AUTOWIDTH
|
|
ioctl(fileno(stdout), TIOCGWINSZ, &win);
|
|
if (win.ws_col > 0)
|
|
terminal_width = win.ws_col - 1;
|
|
#endif
|
|
nfiles = 0;
|
|
|
|
#ifdef CONFIG_FEATURE_LS_COLOR
|
|
if (isatty(fileno(stdout)))
|
|
show_color = 1;
|
|
#endif
|
|
|
|
/* process options */
|
|
while ((opt = getopt(argc, argv, "1AaCdgilnsx"
|
|
#ifdef CONFIG_FEATURE_AUTOWIDTH
|
|
"T:w:"
|
|
#endif
|
|
#ifdef CONFIG_FEATURE_LS_FILETYPES
|
|
"Fp"
|
|
#endif
|
|
#ifdef CONFIG_FEATURE_LS_RECURSIVE
|
|
"R"
|
|
#endif
|
|
#ifdef CONFIG_FEATURE_LS_SORTFILES
|
|
"rSvX"
|
|
#endif
|
|
#ifdef CONFIG_FEATURE_LS_TIMESTAMPS
|
|
"cetu"
|
|
#endif
|
|
#ifdef CONFIG_FEATURE_LS_FOLLOWLINKS
|
|
"L"
|
|
#endif
|
|
#ifdef CONFIG_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 CONFIG_FEATURE_HUMAN_READABLE
|
|
ls_disp_hr = FALSE;
|
|
#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 CONFIG_FEATURE_LS_FILETYPES
|
|
case 'F':
|
|
list_fmt |= LIST_FILETYPE | LIST_EXEC;
|
|
break;
|
|
case 'p':
|
|
list_fmt |= LIST_FILETYPE;
|
|
break;
|
|
#endif
|
|
#ifdef CONFIG_FEATURE_LS_RECURSIVE
|
|
case 'R':
|
|
disp_opts |= DISP_RECURSIVE;
|
|
break;
|
|
#endif
|
|
#ifdef CONFIG_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 CONFIG_FEATURE_LS_TIMESTAMPS
|
|
case 'e':
|
|
list_fmt |= LIST_FULLTIME;
|
|
break;
|
|
case 'c':
|
|
time_fmt = TIME_CHANGE;
|
|
#ifdef CONFIG_FEATURE_LS_SORTFILES
|
|
sort_opts = SORT_CTIME;
|
|
#endif
|
|
break;
|
|
case 'u':
|
|
time_fmt = TIME_ACCESS;
|
|
#ifdef CONFIG_FEATURE_LS_SORTFILES
|
|
sort_opts = SORT_ATIME;
|
|
#endif
|
|
break;
|
|
case 't':
|
|
#ifdef CONFIG_FEATURE_LS_SORTFILES
|
|
sort_opts = SORT_MTIME;
|
|
#endif
|
|
break;
|
|
#endif
|
|
#ifdef CONFIG_FEATURE_LS_FOLLOWLINKS
|
|
case 'L':
|
|
follow_links = TRUE;
|
|
break;
|
|
#endif
|
|
#ifdef CONFIG_FEATURE_AUTOWIDTH
|
|
case 'T':
|
|
tabstops = atoi(optarg);
|
|
break;
|
|
case 'w':
|
|
terminal_width = atoi(optarg);
|
|
break;
|
|
#endif
|
|
#ifdef CONFIG_FEATURE_HUMAN_READABLE
|
|
case 'h':
|
|
ls_disp_hr = TRUE;
|
|
break;
|
|
#endif
|
|
case 'k':
|
|
break;
|
|
default:
|
|
goto print_usage_message;
|
|
}
|
|
}
|
|
|
|
/* sort out which command line options take precedence */
|
|
#ifdef CONFIG_FEATURE_LS_RECURSIVE
|
|
if (disp_opts & DISP_NOLIST)
|
|
disp_opts &= ~DISP_RECURSIVE; /* no recurse if listing only dir */
|
|
#endif
|
|
#if defined (CONFIG_FEATURE_LS_TIMESTAMPS) && defined (CONFIG_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 CONFIG_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++) {
|
|
char *fullname = xstrdup(av[oi]);
|
|
|
|
cur = my_stat(fullname, fullname);
|
|
if (!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 CONFIG_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 CONFIG_FEATURE_LS_SORTFILES
|
|
shellsort(dnf, dnfiles);
|
|
#endif
|
|
showfiles(dnf, dnfiles);
|
|
}
|
|
if (dndirs > 0) {
|
|
#ifdef CONFIG_FEATURE_LS_SORTFILES
|
|
shellsort(dnd, dndirs);
|
|
#endif
|
|
showdirs(dnd, dndirs);
|
|
}
|
|
}
|
|
return (status);
|
|
|
|
print_usage_message:
|
|
show_usage();
|
|
}
|