1 /* vi: set sw=4 ts=4: */
3 * tiny-ls.c version 0.1.0: A minimalist 'ls'
4 * Copyright (C) 1996 Brian Candler <B.Candler@pobox.com>
6 * This program is free software; you can redistribute it and/or modify
7 * it under the terms of the GNU General Public License as published by
8 * the Free Software Foundation; either version 2 of the License, or
9 * (at your option) any later version.
11 * This program is distributed in the hope that it will be useful,
12 * but WITHOUT ANY WARRANTY; without even the implied warranty of
13 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
14 * GNU General Public License for more details.
16 * You should have received a copy of the GNU General Public License
17 * along with this program; if not, write to the Free Software
18 * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
22 * To achieve a small memory footprint, this version of 'ls' doesn't do any
23 * file sorting, and only has the most essential command line switches
24 * (i.e., the ones I couldn't live without :-) All features which involve
25 * linking in substantial chunks of libc can be disabled.
27 * Although I don't really want to add new features to this program to
28 * keep it small, I *am* interested to receive bug fixes and ways to make
32 * 1. ls -l of a directory doesn't give "total <blocks>" header
33 * 2. ls of a symlink to a directory doesn't list directory contents
34 * 3. hidden files can make column width too large
36 * NON-OPTIMAL BEHAVIOUR:
37 * 1. autowidth reads directories twice
38 * 2. if you do a short directory listing without filetype characters
39 * appended, there's no need to stat each one
41 * 1. requires lstat (BSD) - how do you do it without?
45 TERMINAL_WIDTH = 80, /* use 79 if terminal has linefold bug */
46 COLUMN_GAP = 2, /* includes the file type char */
49 /************************************************************************/
51 #include <sys/types.h>
63 #include <sys/ioctl.h>
66 #ifdef CONFIG_FEATURE_LS_TIMESTAMPS
71 #define MAJOR(dev) (((dev)>>8)&0xff)
72 #define MINOR(dev) ((dev)&0xff)
75 /* what is the overall style of the listing */
76 #define STYLE_AUTO (0)
77 #define STYLE_COLUMNS (1U<<21) /* fill columns */
78 #define STYLE_LONG (2U<<21) /* one record per line, extended info */
79 #define STYLE_SINGLE (3U<<21) /* one record per line */
81 #define STYLE_MASK STYLE_SINGLE
82 #define STYLE_ONE_RECORD_FLAG STYLE_LONG
84 /* 51306 lrwxrwxrwx 1 root root 2 May 11 01:43 /bin/view -> vi* */
85 /* what file information will be listed */
86 #define LIST_INO (1U<<0)
87 #define LIST_BLOCKS (1U<<1)
88 #define LIST_MODEBITS (1U<<2)
89 #define LIST_NLINKS (1U<<3)
90 #define LIST_ID_NAME (1U<<4)
91 #define LIST_ID_NUMERIC (1U<<5)
92 #define LIST_SIZE (1U<<6)
93 #define LIST_DEV (1U<<7)
94 #define LIST_DATE_TIME (1U<<8)
95 #define LIST_FULLTIME (1U<<9)
96 #define LIST_FILENAME (1U<<10)
97 #define LIST_SYMLINK (1U<<11)
98 #define LIST_FILETYPE (1U<<12)
99 #define LIST_EXEC (1U<<13)
101 #define LIST_MASK ((LIST_EXEC << 1) - 1)
103 /* what files will be displayed */
104 /* TODO -- We may be able to make DISP_NORMAL 0 to save a bit slot. */
105 #define DISP_NORMAL (1U<<14) /* show normal filenames */
106 #define DISP_DIRNAME (1U<<15) /* 2 or more items? label directories */
107 #define DISP_HIDDEN (1U<<16) /* show filenames starting with . */
108 #define DISP_DOT (1U<<17) /* show . and .. */
109 #define DISP_NOLIST (1U<<18) /* show directory as itself, not contents */
110 #define DISP_RECURSIVE (1U<<19) /* show directory and everything below it */
111 #define DISP_ROWS (1U<<20) /* print across rows */
113 #define DISP_MASK (((DISP_ROWS << 1) - 1) & ~(DISP_NORMAL - 1))
115 #ifdef CONFIG_FEATURE_LS_SORTFILES
116 /* how will the files be sorted */
117 #define SORT_ORDER_FORWARD 0 /* sort in reverse order */
118 #define SORT_ORDER_REVERSE (1U<<27) /* sort in reverse order */
120 #define SORT_NAME 0 /* sort by file name */
121 #define SORT_SIZE (1U<<28) /* sort by file size */
122 #define SORT_ATIME (2U<<28) /* sort by last access time */
123 #define SORT_CTIME (3U<<28) /* sort by last change time */
124 #define SORT_MTIME (4U<<28) /* sort by last modification time */
125 #define SORT_VERSION (5U<<28) /* sort by version */
126 #define SORT_EXT (6U<<28) /* sort by file name extension */
127 #define SORT_DIR (7U<<28) /* sort by file or directory */
129 #define SORT_MASK (7U<<28)
132 #ifdef CONFIG_FEATURE_LS_TIMESTAMPS
133 /* which of the three times will be used */
135 #define TIME_CHANGE (1U<<23)
136 #define TIME_ACCESS (1U<<24)
138 #define TIME_MASK (3U<<23)
141 #ifdef CONFIG_FEATURE_LS_FOLLOWLINKS
142 #define FOLLOW_LINKS (1U<<25)
144 #ifdef CONFIG_FEATURE_HUMAN_READABLE
145 #define LS_DISP_HR (1U<<26)
148 #define LIST_SHORT (LIST_FILENAME)
149 #define LIST_ISHORT (LIST_INO | LIST_FILENAME)
150 #define LIST_LONG (LIST_MODEBITS | LIST_NLINKS | LIST_ID_NAME | LIST_SIZE | \
151 LIST_DATE_TIME | LIST_FILENAME | LIST_SYMLINK)
152 #define LIST_ILONG (LIST_INO | LIST_LONG)
156 #define SPLIT_SUBDIR 2
158 #define TYPEINDEX(mode) (((mode) >> 12) & 0x0f)
159 #define TYPECHAR(mode) ("0pcCd?bB-?l?s???" [TYPEINDEX(mode)])
161 #if defined(CONFIG_FEATURE_LS_FILETYPES) || defined(CONFIG_FEATURE_LS_COLOR)
162 # define APPCHAR(mode) ("\0|\0\0/\0\0\0\0\0@\0=\0\0\0" [TYPEINDEX(mode)])
165 /* colored LS support by JaWi, janwillem.janssen@lxtreme.nl */
166 #ifdef CONFIG_FEATURE_LS_COLOR
167 static int show_color = 0;
169 #define COLOR(mode) ("\000\043\043\043\042\000\043\043"\
170 "\000\000\044\000\043\000\000\040" [TYPEINDEX(mode)])
171 #define ATTR(mode) ("\00\00\01\00\01\00\01\00"\
172 "\00\00\01\00\01\00\00\01" [TYPEINDEX(mode)])
176 * a directory entry and its stat info are stored here
178 struct dnode { /* the basic node */
179 char *name; /* the dir entry name */
180 char *fullname; /* the dir entry name */
181 struct stat dstat; /* the file stat info */
182 struct dnode *next; /* point at the next node */
184 typedef struct dnode dnode_t;
186 static struct dnode **list_dir(const char *);
187 static struct dnode **dnalloc(int);
188 static int list_single(struct dnode *);
190 static unsigned int all_fmt;
192 #ifdef CONFIG_FEATURE_AUTOWIDTH
193 static unsigned short terminal_width = TERMINAL_WIDTH;
194 static unsigned short tabstops = COLUMN_GAP;
196 #define tabstops COLUMN_GAP
197 #define terminal_width TERMINAL_WIDTH
200 static int status = EXIT_SUCCESS;
202 static struct dnode *my_stat(char *fullname, char *name)
207 #ifdef CONFIG_FEATURE_LS_FOLLOWLINKS
208 if (all_fmt & FOLLOW_LINKS) {
209 if (stat(fullname, &dstat)) {
210 bb_perror_msg("%s", fullname);
211 status = EXIT_FAILURE;
216 if (lstat(fullname, &dstat)) {
217 bb_perror_msg("%s", fullname);
218 status = EXIT_FAILURE;
222 cur = (struct dnode *) xmalloc(sizeof(struct dnode));
223 cur->fullname = fullname;
229 /*----------------------------------------------------------------------*/
230 #ifdef CONFIG_FEATURE_LS_COLOR
231 static char fgcolor(mode_t mode)
233 /* Check wheter the file is existing (if so, color it red!) */
234 if (errno == ENOENT) {
237 if (LIST_EXEC && S_ISREG(mode)
238 && (mode & (S_IXUSR | S_IXGRP | S_IXOTH)))
239 return COLOR(0xF000); /* File is executable ... */
243 /*----------------------------------------------------------------------*/
244 static char bgcolor(mode_t mode)
246 if (LIST_EXEC && S_ISREG(mode)
247 && (mode & (S_IXUSR | S_IXGRP | S_IXOTH)))
248 return ATTR(0xF000); /* File is executable ... */
253 /*----------------------------------------------------------------------*/
254 #if defined(CONFIG_FEATURE_LS_FILETYPES) || defined(CONFIG_FEATURE_LS_COLOR)
255 static char append_char(mode_t mode)
257 if (!(all_fmt & LIST_FILETYPE))
259 if ((all_fmt & LIST_EXEC) && S_ISREG(mode)
260 && (mode & (S_IXUSR | S_IXGRP | S_IXOTH)))
262 return APPCHAR(mode);
266 /*----------------------------------------------------------------------*/
268 #define countdirs(A,B) count_dirs((A), (B), 1)
269 #define countsubdirs(A,B) count_dirs((A), (B), 0)
271 static int count_dirs(struct dnode **dn, int nfiles, int notsubdirs)
275 if (dn == NULL || nfiles < 1)
278 for (i = 0; i < nfiles; i++) {
279 if (S_ISDIR(dn[i]->dstat.st_mode)
281 || ((dn[i]->name[0] != '.')
283 && ((dn[i]->name[1] != '.')
284 || dn[i]->name[2])))))
290 static int countfiles(struct dnode **dnp)
298 for (cur = dnp[0]; cur->next != NULL; cur = cur->next)
304 /* get memory to hold an array of pointers */
305 static struct dnode **dnalloc(int num)
312 p = (struct dnode **) xcalloc((size_t) num,
313 (size_t) (sizeof(struct dnode *)));
317 #ifdef CONFIG_FEATURE_LS_RECURSIVE
318 static void dfree(struct dnode **dnp)
320 struct dnode *cur, *next;
326 while (cur != NULL) {
327 free(cur->fullname); /* free the filename */
329 free(cur); /* free the dnode */
332 free(dnp); /* free the array holding the dnode pointers */
336 static struct dnode **splitdnarray(struct dnode **dn, int nfiles, int which)
341 if (dn == NULL || nfiles < 1)
344 /* count how many dirs and regular files there are */
345 if (which == SPLIT_SUBDIR)
346 dncnt = countsubdirs(dn, nfiles);
348 dncnt = countdirs(dn, nfiles); /* assume we are looking for dirs */
349 if (which == SPLIT_FILE)
350 dncnt = nfiles - dncnt; /* looking for files */
353 /* allocate a file array and a dir array */
354 dnp = dnalloc(dncnt);
356 /* copy the entrys into the file or dir array */
357 for (d = i = 0; i < nfiles; i++) {
358 if (S_ISDIR(dn[i]->dstat.st_mode)) {
359 if (which & (SPLIT_DIR|SPLIT_SUBDIR)) {
360 if ((which & SPLIT_DIR)
361 || ((dn[i]->name[0] != '.')
363 && ((dn[i]->name[1] != '.')
364 || dn[i]->name[2])))) {
368 } else if (!(which & (SPLIT_DIR|SPLIT_SUBDIR))) {
375 /*----------------------------------------------------------------------*/
376 #ifdef CONFIG_FEATURE_LS_SORTFILES
377 static int sortcmp(struct dnode *d1, struct dnode *d2)
379 unsigned int sort_opts = all_fmt & SORT_MASK;
382 dif = 0; /* assume SORT_NAME */
383 if (sort_opts == SORT_SIZE) {
384 dif = (int) (d2->dstat.st_size - d1->dstat.st_size);
385 } else if (sort_opts == SORT_ATIME) {
386 dif = (int) (d2->dstat.st_atime - d1->dstat.st_atime);
387 } else if (sort_opts == SORT_CTIME) {
388 dif = (int) (d2->dstat.st_ctime - d1->dstat.st_ctime);
389 } else if (sort_opts == SORT_MTIME) {
390 dif = (int) (d2->dstat.st_mtime - d1->dstat.st_mtime);
391 } else if (sort_opts == SORT_DIR) {
392 dif = S_ISDIR(d2->dstat.st_mode) - S_ISDIR(d1->dstat.st_mode);
393 /* } else if (sort_opts == SORT_VERSION) { */
394 /* } else if (sort_opts == SORT_EXT) { */
398 /* sort by name- may be a tie_breaker for time or size cmp */
399 #ifdef CONFIG_LOCALE_SUPPORT
400 dif = strcoll(d1->name, d2->name);
402 dif = strcmp(d1->name, d2->name);
406 if (all_fmt & SORT_ORDER_REVERSE) {
412 /*----------------------------------------------------------------------*/
413 static void shellsort(struct dnode **dn, int size)
418 /* shell short the array */
419 if (dn == NULL || size < 2)
422 for (gap = size / 2; gap > 0; gap /= 2) {
423 for (i = gap; i < size; i++) {
424 for (j = i - gap; j >= 0; j -= gap) {
425 if (sortcmp(dn[j], dn[j + gap]) <= 0)
427 /* they are out of order, swap them */
437 /*----------------------------------------------------------------------*/
438 static void showfiles(struct dnode **dn, int nfiles)
440 int i, ncols, nrows, row, nc;
443 int column_width = 0; /* for STYLE_LONG and STYLE_SINGLE not used */
445 if (dn == NULL || nfiles < 1)
448 if (all_fmt & STYLE_ONE_RECORD_FLAG) {
451 /* find the longest file name- use that as the column width */
452 for (i = 0; i < nfiles; i++) {
453 int len = strlen(dn[i]->name) +
454 ((all_fmt & LIST_INO) ? 8 : 0) +
455 ((all_fmt & LIST_BLOCKS) ? 5 : 0);
456 if (column_width < len)
459 column_width += tabstops;
460 ncols = (int) (terminal_width / column_width);
464 nrows = nfiles / ncols;
465 if ((nrows * ncols) < nfiles)
466 nrows++; /* round up fractionals */
472 for (row = 0; row < nrows; row++) {
473 for (nc = 0; nc < ncols; nc++) {
474 /* reach into the array based on the column and row */
475 i = (nc * nrows) + row; /* assume display by column */
476 if (all_fmt & DISP_ROWS)
477 i = (row * ncols) + nc; /* display across row */
486 nexttab = column + column_width;
487 column += list_single(dn[i]);
495 /*----------------------------------------------------------------------*/
496 static void showdirs(struct dnode **dn, int ndirs)
499 struct dnode **subdnp;
501 #ifdef CONFIG_FEATURE_LS_RECURSIVE
506 if (dn == NULL || ndirs < 1)
509 for (i = 0; i < ndirs; i++) {
510 if (all_fmt & (DISP_DIRNAME | DISP_RECURSIVE)) {
511 printf("\n%s:\n", dn[i]->fullname);
513 subdnp = list_dir(dn[i]->fullname);
514 nfiles = countfiles(subdnp);
516 /* list all files at this level */
517 #ifdef CONFIG_FEATURE_LS_SORTFILES
518 shellsort(subdnp, nfiles);
520 showfiles(subdnp, nfiles);
521 #ifdef CONFIG_FEATURE_LS_RECURSIVE
522 if (all_fmt & DISP_RECURSIVE) {
523 /* recursive- list the sub-dirs */
524 dnd = splitdnarray(subdnp, nfiles, SPLIT_SUBDIR);
525 dndirs = countsubdirs(subdnp, nfiles);
527 #ifdef CONFIG_FEATURE_LS_SORTFILES
528 shellsort(dnd, dndirs);
530 showdirs(dnd, dndirs);
531 free(dnd); /* free the array of dnode pointers to the dirs */
534 dfree(subdnp); /* free the dnodes and the fullname mem */
540 /*----------------------------------------------------------------------*/
541 static struct dnode **list_dir(const char *path)
543 struct dnode *dn, *cur, **dnp;
544 struct dirent *entry;
555 bb_perror_msg("%s", path);
556 status = EXIT_FAILURE;
557 return (NULL); /* could not open the dir */
559 while ((entry = readdir(dir)) != NULL) {
562 /* are we going to list the file- it may be . or .. or a hidden file */
563 if (entry->d_name[0] == '.') {
564 if ((entry->d_name[1] == 0 || (
565 entry->d_name[1] == '.'
566 && entry->d_name[2] == 0))
567 && !(all_fmt & DISP_DOT))
569 if (!(all_fmt & DISP_HIDDEN))
572 fullname = concat_path_file(path, entry->d_name);
573 cur = my_stat(fullname, strrchr(fullname, '/') + 1);
582 /* now that we know how many files there are
583 ** allocate memory for an array to hold dnode pointers
587 dnp = dnalloc(nfiles);
588 for (i = 0, cur = dn; i < nfiles; i++) {
589 dnp[i] = cur; /* save pointer to node in array */
596 /*----------------------------------------------------------------------*/
597 static int list_single(struct dnode *dn)
601 #ifdef CONFIG_FEATURE_LS_USERNAME
604 #ifdef CONFIG_FEATURE_LS_TIMESTAMPS
608 #if defined(CONFIG_FEATURE_LS_FILETYPES) || defined (CONFIG_FEATURE_LS_COLOR)
613 if (dn->fullname == NULL)
616 #ifdef CONFIG_FEATURE_LS_TIMESTAMPS
617 ttime = dn->dstat.st_mtime; /* the default time */
618 if (all_fmt & TIME_ACCESS)
619 ttime = dn->dstat.st_atime;
620 if (all_fmt & TIME_CHANGE)
621 ttime = dn->dstat.st_ctime;
622 filetime = ctime(&ttime);
624 #ifdef CONFIG_FEATURE_LS_FILETYPES
625 append = append_char(dn->dstat.st_mode);
628 for (i = 0; i <= 31; i++) {
629 switch (all_fmt & (1 << i)) {
631 column += printf("%7ld ", (long int) dn->dstat.st_ino);
634 #if _FILE_OFFSET_BITS == 64
635 column += printf("%4lld ", dn->dstat.st_blocks >> 1);
637 column += printf("%4ld ", dn->dstat.st_blocks >> 1);
641 column += printf("%-10s ", (char *) bb_mode_string(dn->dstat.st_mode));
644 column += printf("%4ld ", (long) dn->dstat.st_nlink);
647 #ifdef CONFIG_FEATURE_LS_USERNAME
648 my_getpwuid(scratch, dn->dstat.st_uid);
649 printf("%-8.8s ", scratch);
650 my_getgrgid(scratch, dn->dstat.st_gid);
651 printf("%-8.8s", scratch);
655 case LIST_ID_NUMERIC:
656 column += printf("%-8d %-8d", dn->dstat.st_uid, dn->dstat.st_gid);
660 if (S_ISBLK(dn->dstat.st_mode) || S_ISCHR(dn->dstat.st_mode)) {
661 column += printf("%4d, %3d ", (int) MAJOR(dn->dstat.st_rdev),
662 (int) MINOR(dn->dstat.st_rdev));
664 #ifdef CONFIG_FEATURE_HUMAN_READABLE
665 if (all_fmt & LS_DISP_HR) {
666 column += printf("%9s ",
667 make_human_readable_str(dn->dstat.st_size, 1, 0));
671 #if _FILE_OFFSET_BITS == 64
672 column += printf("%9lld ", (long long) dn->dstat.st_size);
674 column += printf("%9ld ", dn->dstat.st_size);
679 #ifdef CONFIG_FEATURE_LS_TIMESTAMPS
682 if (all_fmt & LIST_FULLTIME) {
683 printf("%24.24s ", filetime);
687 age = time(NULL) - ttime;
688 printf("%6.6s ", filetime + 4);
689 if (age < 3600L * 24 * 365 / 2 && age > -15 * 60) {
690 /* hh:mm if less than 6 months old */
691 printf("%5.5s ", filetime + 11);
693 printf(" %4.4s ", filetime + 20);
699 #ifdef CONFIG_FEATURE_LS_COLOR
701 if (show_color && !lstat(dn->fullname, &info)) {
702 printf("\033[%d;%dm", bgcolor(info.st_mode),
703 fgcolor(info.st_mode));
706 column += printf("%s", dn->name);
707 #ifdef CONFIG_FEATURE_LS_COLOR
714 if (S_ISLNK(dn->dstat.st_mode)) {
715 char *lpath = xreadlink(dn->fullname);
719 #if defined(CONFIG_FEATURE_LS_FILETYPES) || defined (CONFIG_FEATURE_LS_COLOR)
720 if (!stat(dn->fullname, &info)) {
721 append = append_char(info.st_mode);
724 #ifdef CONFIG_FEATURE_LS_COLOR
727 printf("\033[%d;%dm", bgcolor(info.st_mode),
728 fgcolor(info.st_mode));
731 column += printf("%s", lpath) + 4;
732 #ifdef CONFIG_FEATURE_LS_COLOR
741 #ifdef CONFIG_FEATURE_LS_FILETYPES
743 if (append != '\0') {
744 printf("%1c", append);
755 /*----------------------------------------------------------------------*/
757 static const char ls_opts[] = "1AaCdgilnsx"
758 #ifdef CONFIG_FEATURE_LS_FILETYPES
761 #ifdef CONFIG_FEATURE_LS_RECURSIVE
764 #ifdef CONFIG_FEATURE_LS_SORTFILES
767 #ifdef CONFIG_FEATURE_LS_TIMESTAMPS
770 #ifdef CONFIG_FEATURE_LS_FOLLOWLINKS
773 #ifdef CONFIG_FEATURE_HUMAN_READABLE
777 #ifdef CONFIG_FEATURE_AUTOWIDTH
782 #define LIST_MASK_TRIGGER LIST_SHORT
783 #define STYLE_MASK_TRIGGER STYLE_MASK
784 #define SORT_MASK_TRIGGER SORT_MASK
785 #define DISP_MASK_TRIGGER DISP_ROWS
786 #define TIME_MASK_TRIGGER TIME_MASK
788 static const unsigned opt_flags[] = {
789 LIST_SHORT | STYLE_SINGLE, /* 1 */
791 DISP_HIDDEN | DISP_DOT, /* a */
792 LIST_SHORT | STYLE_COLUMNS, /* C */
796 LIST_LONG | STYLE_LONG, /* l - remember LS_DISP_HR in mask! */
797 LIST_ID_NUMERIC, /* n */
800 #ifdef CONFIG_FEATURE_LS_FILETYPES
801 LIST_FILETYPE | LIST_EXEC, /* F */
802 LIST_FILETYPE, /* p */
804 #ifdef CONFIG_FEATURE_LS_RECURSIVE
805 DISP_RECURSIVE, /* R */
807 #ifdef CONFIG_FEATURE_LS_SORTFILES
808 SORT_ORDER_REVERSE, /* r */
810 SORT_VERSION, /* v */
813 #ifdef CONFIG_FEATURE_LS_TIMESTAMPS
814 LIST_FULLTIME, /* e */
815 #ifdef CONFIG_FEATURE_LS_SORTFILES
816 TIME_CHANGE | SORT_CTIME, /* c */
820 #ifdef CONFIG_FEATURE_LS_SORTFILES
821 TIME_ACCESS | SORT_ATIME, /* u */
825 #ifdef CONFIG_FEATURE_LS_SORTFILES
828 0, /* t - ignored -- is this correct? */
831 #ifdef CONFIG_FEATURE_LS_FOLLOWLINKS
832 FOLLOW_LINKS, /* L */
834 #ifdef CONFIG_FEATURE_HUMAN_READABLE
841 /*----------------------------------------------------------------------*/
843 extern int ls_main(int argc, char **argv)
845 struct dnode **dnf, **dnd;
847 struct dnode *dn, *cur, **dnp;
853 #ifdef CONFIG_FEATURE_AUTOWIDTH
854 struct winsize win = { 0, 0, 0, 0 };
857 all_fmt = LIST_SHORT | DISP_NORMAL | STYLE_AUTO
858 #ifdef CONFIG_FEATURE_LS_TIMESTAMPS
861 #ifdef CONFIG_FEATURE_LS_SORTFILES
862 | SORT_NAME | SORT_ORDER_FORWARD
865 #ifdef CONFIG_FEATURE_AUTOWIDTH
866 ioctl(fileno(stdout), TIOCGWINSZ, &win);
868 terminal_width = win.ws_col - 1;
872 #ifdef CONFIG_FEATURE_LS_COLOR
873 if (isatty(fileno(stdout)))
877 /* process options */
878 while ((opt = getopt(argc, argv, ls_opts)) > 0) {
879 #ifdef CONFIG_FEATURE_AUTOWIDTH
881 tabstops = atoi(optarg);
885 terminal_width = atoi(optarg);
889 goto print_usage_message;
894 const char *p = strchr(ls_opts, opt);
895 if (!p) { /* shouldn't be necessary */
896 goto print_usage_message;
898 flags = opt_flags[(int)(p - ls_opts)];
899 if (flags & LIST_MASK_TRIGGER) {
900 all_fmt &= ~LIST_MASK;
902 if (flags & STYLE_MASK_TRIGGER) {
903 all_fmt &= ~STYLE_MASK;
905 if (flags & SORT_MASK_TRIGGER) {
906 all_fmt &= ~SORT_MASK;
908 if (flags & DISP_MASK_TRIGGER) {
909 all_fmt &= ~DISP_MASK;
911 if (flags & TIME_MASK_TRIGGER) {
912 all_fmt &= ~TIME_MASK;
914 #ifdef CONFIG_FEATURE_HUMAN_READABLE
916 all_fmt &= ~LS_DISP_HR;
924 /* sort out which command line options take precedence */
925 #ifdef CONFIG_FEATURE_LS_RECURSIVE
926 if (all_fmt & DISP_NOLIST)
927 all_fmt &= ~DISP_RECURSIVE; /* no recurse if listing only dir */
929 #if defined (CONFIG_FEATURE_LS_TIMESTAMPS) && defined (CONFIG_FEATURE_LS_SORTFILES)
930 if (all_fmt & TIME_CHANGE)
931 all_fmt = (all_fmt & ~SORT_MASK) | SORT_CTIME;
932 if (all_fmt & TIME_ACCESS)
933 all_fmt = (all_fmt & ~SORT_MASK) | SORT_ATIME;
935 if ((all_fmt & STYLE_MASK) != STYLE_LONG) /* only for long list */
936 all_fmt &= ~(LIST_ID_NUMERIC|LIST_FULLTIME|LIST_ID_NAME|LIST_ID_NUMERIC);
937 #ifdef CONFIG_FEATURE_LS_USERNAME
938 if ((all_fmt & STYLE_MASK) == STYLE_LONG && (all_fmt & LIST_ID_NUMERIC))
939 all_fmt &= ~LIST_ID_NAME; /* don't list names if numeric uid */
942 /* choose a display format */
943 if ((all_fmt & STYLE_MASK) == STYLE_AUTO)
945 all_fmt = (all_fmt & ~STYLE_MASK)
946 | (isatty(fileno(stdout)) ? STYLE_COLUMNS : STYLE_SINGLE);
948 all_fmt |= (isatty(fileno(stdout)) ? STYLE_COLUMNS : STYLE_SINGLE);
952 * when there are no cmd line args we have to supply a default "." arg.
953 * we will create a second argv array, "av" that will hold either
954 * our created "." arg, or the real cmd line args. The av array
955 * just holds the pointers- we don't move the date the pointers
958 ac = argc - optind; /* how many cmd line args are left */
960 av = (char **) xcalloc((size_t) 1, (size_t) (sizeof(char *)));
961 av[0] = bb_xstrdup(".");
964 av = (char **) xcalloc((size_t) ac, (size_t) (sizeof(char *)));
965 for (oi = 0; oi < ac; oi++) {
966 av[oi] = argv[optind++]; /* copy pointer to real cmd line arg */
970 /* now, everything is in the av array */
972 all_fmt |= DISP_DIRNAME; /* 2 or more items? label directories */
974 /* stuff the command line file names into an dnode array */
976 for (oi = 0; oi < ac; oi++) {
977 char *fullname = bb_xstrdup(av[oi]);
979 cur = my_stat(fullname, fullname);
987 /* now that we know how many files there are
988 ** allocate memory for an array to hold dnode pointers
990 dnp = dnalloc(nfiles);
991 for (i = 0, cur = dn; i < nfiles; i++) {
992 dnp[i] = cur; /* save pointer to node in array */
997 if (all_fmt & DISP_NOLIST) {
998 #ifdef CONFIG_FEATURE_LS_SORTFILES
999 shellsort(dnp, nfiles);
1002 showfiles(dnp, nfiles);
1004 dnd = splitdnarray(dnp, nfiles, SPLIT_DIR);
1005 dnf = splitdnarray(dnp, nfiles, SPLIT_FILE);
1006 dndirs = countdirs(dnp, nfiles);
1007 dnfiles = nfiles - dndirs;
1009 #ifdef CONFIG_FEATURE_LS_SORTFILES
1010 shellsort(dnf, dnfiles);
1012 showfiles(dnf, dnfiles);
1015 #ifdef CONFIG_FEATURE_LS_SORTFILES
1016 shellsort(dnd, dndirs);
1018 showdirs(dnd, dndirs);
1023 print_usage_message: