/*
* tiny-ls.c version 0.1.0: A minimalist 'ls'
* Copyright (C) 1996 Brian Candler <B.Candler@pobox.com>
- *
+ *
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* 1. requires lstat (BSD) - how do you do it without?
*/
-#define TERMINAL_WIDTH 80 /* use 79 if your terminal has linefold bug */
-#define COLUMN_WIDTH 14 /* default if AUTOWIDTH not defined */
-#define COLUMN_GAP 2 /* includes the file type char, if present */
-#define HAS_REWINDDIR
+enum {
+ TERMINAL_WIDTH = 80, /* use 79 if terminal has linefold bug */
+ COLUMN_WIDTH = 14, /* default if AUTOWIDTH not defined */
+ COLUMN_GAP = 2, /* includes the file type char */
+};
+
/************************************************************************/
-#include "internal.h"
-#if !defined(__GLIBC__) && (__GLIBC__ >= 2) && (__GLIBC_MINOR__ >= 1)
-# include <linux/types.h>
-#else
-# include <sys/types.h>
-#endif
+#include <sys/types.h>
#include <sys/stat.h>
#include <stdio.h>
#include <unistd.h>
#ifdef BB_FEATURE_LS_TIMESTAMPS
#include <time.h>
#endif
+#include <string.h>
+#include <stdlib.h>
-#define TYPEINDEX(mode) (((mode) >> 12) & 0x0f)
-#define TYPECHAR(mode) ("0pcCd?bB-?l?s???" [TYPEINDEX(mode)])
-#ifdef BB_FEATURE_LS_FILETYPES
-#define APPCHAR(mode) ("\0|\0\0/\0\0\0\0\0@\0=\0\0\0" [TYPEINDEX(mode)])
+#include <fcntl.h>
+#include <signal.h>
+#include <sys/ioctl.h>
+#include "busybox.h"
+
+#ifndef MAJOR
+#define MAJOR(dev) (((dev)>>8)&0xff)
+#define MINOR(dev) ((dev)&0xff)
#endif
-#define FMT_AUTO 0
-#define FMT_LONG 1 /* one record per line, extended info */
-#define FMT_SINGLE 2 /* one record per line */
-#define FMT_ROWS 3 /* print across rows */
-#define FMT_COLUMNS 3 /* fill columns (same, since we don't sort) */
+/* what is the overall style of the listing */
+enum {
+STYLE_AUTO = 0,
+STYLE_LONG = 1, /* one record per line, extended info */
+STYLE_SINGLE = 2, /* one record per line */
+STYLE_COLUMNS = 3 /* fill columns */
+};
+
+/* 51306 lrwxrwxrwx 1 root root 2 May 11 01:43 /bin/view -> vi* */
+/* what file information will be listed */
+#define LIST_INO (1<<0)
+#define LIST_BLOCKS (1<<1)
+#define LIST_MODEBITS (1<<2)
+#define LIST_NLINKS (1<<3)
+#define LIST_ID_NAME (1<<4)
+#define LIST_ID_NUMERIC (1<<5)
+#define LIST_SIZE (1<<6)
+#define LIST_DEV (1<<7)
+#define LIST_DATE_TIME (1<<8)
+#define LIST_FULLTIME (1<<9)
+#define LIST_FILENAME (1<<10)
+#define LIST_SYMLINK (1<<11)
+#define LIST_FILETYPE (1<<12)
+#define LIST_EXEC (1<<13)
+
+/* what files will be displayed */
+#define DISP_NORMAL (0) /* show normal filenames */
+#define DISP_DIRNAME (1<<0) /* 2 or more items? label directories */
+#define DISP_HIDDEN (1<<1) /* show filenames starting with . */
+#define DISP_DOT (1<<2) /* show . and .. */
+#define DISP_NOLIST (1<<3) /* show directory as itself, not contents */
+#define DISP_RECURSIVE (1<<4) /* show directory and everything below it */
+#define DISP_ROWS (1<<5) /* print across rows */
+
+#ifdef BB_FEATURE_LS_SORTFILES
+/* how will the files be sorted */
+static const int SORT_FORWARD = 0; /* sort in reverse order */
+static const int SORT_REVERSE = 1; /* sort in reverse order */
+static const int SORT_NAME = 2; /* sort by file name */
+static const int SORT_SIZE = 3; /* sort by file size */
+static const int SORT_ATIME = 4; /* sort by last access time */
+static const int SORT_CTIME = 5; /* sort by last change time */
+static const int SORT_MTIME = 6; /* sort by last modification time */
+static const int SORT_VERSION = 7; /* sort by version */
+static const int SORT_EXT = 8; /* sort by file name extension */
+static const int SORT_DIR = 9; /* sort by file or directory */
+#endif
-#define TIME_MOD 0
-#define TIME_CHANGE 1
-#define TIME_ACCESS 2
+#ifdef BB_FEATURE_LS_TIMESTAMPS
+/* which of the three times will be used */
+static const int TIME_MOD = 0;
+static const int TIME_CHANGE = 1;
+static const int TIME_ACCESS = 2;
+#endif
-#define DISP_FTYPE 1 /* show character for file type */
-#define DISP_EXEC 2 /* show '*' if regular executable file */
-#define DISP_HIDDEN 4 /* show files starting . (except . and ..) */
-#define DISP_DOT 8 /* show . and .. */
-#define DISP_NUMERIC 16 /* numeric uid and gid */
-#define DISP_FULLTIME 32 /* show extended time display */
-#define DIR_NOLIST 64 /* show directory as itself, not contents */
-#define DISP_DIRNAME 128 /* show directory name (for internal use) */
-#define DISP_RECURSIVE 256 /* Do a recursive listing */
+#define LIST_SHORT (LIST_FILENAME)
+#define LIST_ISHORT (LIST_INO | LIST_FILENAME)
+#define LIST_LONG (LIST_MODEBITS | LIST_NLINKS | LIST_ID_NAME | \
+ LIST_SIZE | LIST_DATE_TIME | LIST_FILENAME | \
+ LIST_SYMLINK)
+#define LIST_ILONG (LIST_INO | LIST_LONG)
-#ifndef MAJOR
-#define MAJOR(dev) (((dev)>>8)&0xff)
-#define MINOR(dev) ((dev)&0xff)
+static const int SPLIT_DIR = 0;
+static const int SPLIT_FILE = 1;
+static const int SPLIT_SUBDIR = 2;
+
+#define TYPEINDEX(mode) (((mode) >> 12) & 0x0f)
+#define TYPECHAR(mode) ("0pcCd?bB-?l?s???" [TYPEINDEX(mode)])
+#ifdef BB_FEATURE_LS_FILETYPES
+#define APPCHAR(mode) ("\0|\0\0/\0\0\0\0\0@\0=\0\0\0" [TYPEINDEX(mode)])
#endif
-static unsigned char display_fmt = FMT_AUTO;
-static unsigned short opts = 0;
-static unsigned short column = 0;
+/*
+ * a directory entry and its stat info are stored here
+ */
+struct dnode { /* the basic node */
+ char *name; /* the dir entry name */
+ char *fullname; /* the dir entry name */
+ struct stat dstat; /* the file stat info */
+ struct dnode *next; /* point at the next node */
+};
+typedef struct dnode dnode_t;
+
+struct dnode **list_dir(char *);
+struct dnode **dnalloc(int);
+int list_single(struct dnode *);
+
+static unsigned int disp_opts;
+static unsigned int style_fmt;
+static unsigned int list_fmt;
+#ifdef BB_FEATURE_LS_SORTFILES
+static unsigned int sort_opts;
+static unsigned int sort_order;
+#endif
+#ifdef BB_FEATURE_LS_TIMESTAMPS
+static unsigned int time_fmt;
+#endif
+#ifdef BB_FEATURE_LS_FOLLOWLINKS
+static unsigned int follow_links=FALSE;
+#endif
+static unsigned short column = 0;
#ifdef BB_FEATURE_AUTOWIDTH
-static unsigned short terminal_width = 0;
-static unsigned short column_width = 0;
-static unsigned short toplevel_column_width = 0;
+static unsigned short terminal_width = TERMINAL_WIDTH;
+static unsigned short column_width = COLUMN_WIDTH;
+static unsigned short tabstops = COLUMN_GAP;
#else
-#define terminal_width TERMINAL_WIDTH
-#define column_width COLUMN_WIDTH
+static unsigned short column_width = COLUMN_WIDTH;
#endif
-#ifdef BB_FEATURE_LS_TIMESTAMPS
-static unsigned char time_fmt = TIME_MOD;
-#endif
+static int status = EXIT_SUCCESS;
-#define wr(data,len) fwrite(data, 1, len, stdout)
+#ifdef BB_FEATURE_HUMAN_READABLE
+unsigned long ls_disp_hr = KILOBYTE;
+#endif
-static void writenum(long val, short minwidth)
+static int my_stat(struct dnode *cur)
{
- char scratch[128];
-
- char *p = scratch + sizeof(scratch);
- short len = 0;
- short neg = (val < 0);
-
- if (neg)
- val = -val;
- do
- *--p = (val % 10) + '0', len++, val /= 10;
- while (val);
- if (neg)
- *--p = '-', len++;
- while (len < minwidth)
- *--p = ' ', len++;
- wr(p, len);
- column += len;
+#ifdef BB_FEATURE_LS_FOLLOWLINKS
+ if (follow_links == TRUE) {
+ if (stat(cur->fullname, &cur->dstat)) {
+ perror_msg("%s", cur->fullname);
+ status = EXIT_FAILURE;
+ free(cur->fullname);
+ free(cur);
+ return -1;
+ }
+ } else
+#endif
+ if (lstat(cur->fullname, &cur->dstat)) {
+ perror_msg("%s", cur->fullname);
+ status = EXIT_FAILURE;
+ free(cur->fullname);
+ free(cur);
+ return -1;
+ }
+ return 0;
}
static void newline(void)
{
+ if (column > 0) {
+ putchar('\n');
+ column = 0;
+ }
+}
+
+/*----------------------------------------------------------------------*/
+#ifdef BB_FEATURE_LS_FILETYPES
+static char append_char(mode_t mode)
+{
+ if ( !(list_fmt & LIST_FILETYPE))
+ return '\0';
+ if ((list_fmt & LIST_EXEC) && S_ISREG(mode)
+ && (mode & (S_IXUSR | S_IXGRP | S_IXOTH))) return '*';
+ return APPCHAR(mode);
+}
+#endif
+
+/*----------------------------------------------------------------------*/
+static void nexttabstop( void )
+{
+ static short nexttab= 0;
+ int n=0;
+
if (column > 0) {
- wr("\n", 1);
- column = 0;
+ n= nexttab - column;
+ if (n < 1) n= 1;
+ while (n--) {
+ putchar(' ');
+ column++;
+ }
}
+ nexttab= column + column_width + COLUMN_GAP;
}
-static void tab(short col)
+/*----------------------------------------------------------------------*/
+static int is_subdir(struct dnode *dn)
{
- static const char spaces[] = " ";
-
-#define nspaces ((sizeof spaces)-1) /* null terminator! */
+ return (S_ISDIR(dn->dstat.st_mode) && strcmp(dn->name, ".") != 0 &&
+ strcmp(dn->name, "..") != 0);
+}
- short n = col - column;
+int countdirs(struct dnode **dn, int nfiles)
+{
+ int i, dirs;
- if (n > 0) {
- column = col;
- while (n > nspaces) {
- wr(spaces, nspaces);
- n -= nspaces;
- }
- /* must be 1...(sizeof spaces) left */
- wr(spaces, n);
+ if (dn==NULL || nfiles < 1) return(0);
+ dirs= 0;
+ for (i=0; i<nfiles; i++) {
+ if (S_ISDIR(dn[i]->dstat.st_mode)) dirs++;
}
-#undef nspaces
+ return(dirs);
}
-#ifdef BB_FEATURE_LS_FILETYPES
-static char append_char(mode_t mode)
+int countsubdirs(struct dnode **dn, int nfiles)
{
- if (!(opts & DISP_FTYPE))
- return '\0';
- if ((opts & DISP_EXEC) && S_ISREG(mode)
- && (mode & (S_IXUSR | S_IXGRP | S_IXOTH))) return '*';
- return APPCHAR(mode);
+ int i, subdirs;
+
+ if (dn == NULL || nfiles < 1) return 0;
+ subdirs = 0;
+ for (i = 0; i < nfiles; i++)
+ if (is_subdir(dn[i]))
+ subdirs++;
+ return subdirs;
}
-#endif
-/**
- **
- ** Display a file or directory as a single item
- ** (in either long or short format)
- **
- **/
+int countfiles(struct dnode **dnp)
+{
+ int nfiles;
+ struct dnode *cur;
+
+ if (dnp == NULL) return(0);
+ nfiles= 0;
+ for (cur= dnp[0]; cur->next != NULL ; cur= cur->next) nfiles++;
+ nfiles++;
+ return(nfiles);
+}
-static void list_single(const char *name, struct stat *info,
- const char *fullname)
+/* get memory to hold an array of pointers */
+struct dnode **dnalloc(int num)
{
- char scratch[BUFSIZ + 1];
- short len = strlen(name);
+ struct dnode **p;
-#ifdef BB_FEATURE_LS_FILETYPES
- char append = append_char(info->st_mode);
-#endif
+ if (num < 1) return(NULL);
- if (display_fmt == FMT_LONG) {
- mode_t mode = info->st_mode;
+ p= (struct dnode **)xcalloc((size_t)num, (size_t)(sizeof(struct dnode *)));
+ return(p);
+}
- newline();
- wr(modeString(mode), 10);
- column = 10;
- writenum((long) info->st_nlink, (short) 5);
- fputs(" ", stdout);
-#ifdef BB_FEATURE_LS_USERNAME
- if (!(opts & DISP_NUMERIC)) {
- memset(scratch, 0, sizeof(scratch));
- my_getpwuid(scratch, info->st_uid);
- if (*scratch) {
- fputs(scratch, stdout);
- if (strlen(scratch) <= 8)
- wr(" ", 9 - strlen(scratch));
- } else {
- writenum((long) info->st_uid, (short) 8);
- fputs(" ", stdout);
- }
- } else
-#endif
- {
- writenum((long) info->st_uid, (short) 8);
- fputs(" ", stdout);
- }
-#ifdef BB_FEATURE_LS_USERNAME
- if (!(opts & DISP_NUMERIC)) {
- memset(scratch, 0, sizeof(scratch));
- my_getgrgid(scratch, info->st_gid);
- if (*scratch) {
- fputs(scratch, stdout);
- if (strlen(scratch) <= 8)
- wr(" ", 8 - strlen(scratch));
- } else
- writenum((long) info->st_gid, (short) 8);
- } else
-#endif
- writenum((long) info->st_gid, (short) 8);
- //tab(26);
- if (S_ISBLK(mode) || S_ISCHR(mode)) {
- writenum((long) MAJOR(info->st_rdev), (short) 3);
- fputs(", ", stdout);
- writenum((long) MINOR(info->st_rdev), (short) 3);
- } else
- writenum((long) info->st_size, (short) 8);
- fputs(" ", stdout);
- //tab(32);
-#ifdef BB_FEATURE_LS_TIMESTAMPS
- {
- time_t cal;
- char *string;
+void dfree(struct dnode **dnp)
+{
+ struct dnode *cur, *next;
- switch (time_fmt) {
- case TIME_CHANGE:
- cal = info->st_ctime;
- break;
- case TIME_ACCESS:
- cal = info->st_atime;
- break;
- default:
- cal = info->st_mtime;
- break;
- }
- string = ctime(&cal);
- if (opts & DISP_FULLTIME)
- wr(string, 24);
- else {
- time_t age = time(NULL) - cal;
-
- wr(string + 4, 7); /* mmm_dd_ */
- if (age < 3600L * 24 * 365 / 2 && age > -15 * 60)
- /* hh:mm if less than 6 months old */
- wr(string + 11, 5);
- else
- /* _yyyy otherwise */
- wr(string + 19, 5);
- }
- wr(" ", 1);
- }
-#else
- fputs("--- -- ----- ", stdout);
-#endif
- wr(name, len);
- if (S_ISLNK(mode)) {
- wr(" -> ", 4);
- len = readlink(fullname, scratch, sizeof scratch);
- if (len > 0)
- fwrite(scratch, 1, len, stdout);
-#ifdef BB_FEATURE_LS_FILETYPES
- /* show type of destination */
- if (opts & DISP_FTYPE) {
- if (!stat(fullname, info)) {
- append = append_char(info->st_mode);
- if (append)
- fputc(append, stdout);
- }
- }
-#endif
- }
-#ifdef BB_FEATURE_LS_FILETYPES
- else if (append)
- wr(&append, 1);
-#endif
- } else {
- static short nexttab = 0;
-
- /* sort out column alignment */
- if (column == 0); /* nothing to do */
- else if (display_fmt == FMT_SINGLE)
- newline();
- else {
- if (nexttab + column_width > terminal_width
-#ifndef BB_FEATURE_AUTOWIDTH
- || nexttab + len >= terminal_width
-#endif
- )
- newline();
- else
- tab(nexttab);
- }
- /* work out where next column starts */
-#ifdef BB_FEATURE_AUTOWIDTH
- /* we know the calculated width is big enough */
- nexttab = column + column_width + COLUMN_GAP;
-#else
- /* might cover more than one fixed-width column */
- nexttab = column;
- do
- nexttab += column_width + COLUMN_GAP;
- while (nexttab < (column + len + COLUMN_GAP));
-#endif
- /* now write the data */
- wr(name, len);
- column = column + len;
-#ifdef BB_FEATURE_LS_FILETYPES
- if (append)
- wr(&append, 1), column++;
-#endif
+ if(dnp == NULL) return;
+
+ cur=dnp[0];
+ while (cur != NULL) {
+ if (cur->fullname != NULL) free(cur->fullname); /* free the filename */
+ next= cur->next;
+ free(cur); /* free the dnode */
+ cur= next;
}
+ free(dnp); /* free the array holding the dnode pointers */
}
-/**
- **
- ** List the given file or directory, expanding a directory
- ** to show its contents if required
- **
- **/
-
-static int list_item(const char *name)
+struct dnode **splitdnarray(struct dnode **dn, int nfiles, int which)
{
- struct stat info;
- DIR *dir;
- struct dirent *entry;
- char fullname[MAXNAMLEN + 1], *fnend;
+ int dncnt, i, d;
+ struct dnode **dnp;
+
+ if (dn==NULL || nfiles < 1) return(NULL);
+
+ /* count how many dirs and regular files there are */
+ if (which == SPLIT_SUBDIR)
+ dncnt = countsubdirs(dn, nfiles);
+ else {
+ dncnt= countdirs(dn, nfiles); /* assume we are looking for dirs */
+ if (which == SPLIT_FILE)
+ dncnt= nfiles - dncnt; /* looking for files */
+ }
- if (lstat(name, &info))
- goto listerr;
+ /* allocate a file array and a dir array */
+ dnp= dnalloc(dncnt);
+
+ /* copy the entrys into the file or dir array */
+ for (d= i=0; i<nfiles; i++) {
+ if (which == SPLIT_DIR) {
+ if (S_ISDIR(dn[i]->dstat.st_mode)) {
+ dnp[d++]= dn[i];
+ } /* else skip the file */
+ } else if (which == SPLIT_SUBDIR) {
+ if (is_subdir(dn[i])) {
+ dnp[d++]= dn[i];
+ } /* else skip the file or dir */
+ } else {
+ if (!(S_ISDIR(dn[i]->dstat.st_mode))) {
+ dnp[d++]= dn[i];
+ } /* else skip the dir */
+ }
+ }
+ return(dnp);
+}
- if (!S_ISDIR(info.st_mode) || (opts & DIR_NOLIST)) {
-#ifdef BB_FEATURE_AUTOWIDTH
- column_width = toplevel_column_width;
-#endif
- list_single(name, &info, name);
- return 0;
+/*----------------------------------------------------------------------*/
+#ifdef BB_FEATURE_LS_SORTFILES
+int sortcmp(struct dnode *d1, struct dnode *d2)
+{
+ int cmp, dif;
+
+ cmp= 0;
+ if (sort_opts == SORT_SIZE) {
+ dif= (int)(d1->dstat.st_size - d2->dstat.st_size);
+ } else if (sort_opts == SORT_ATIME) {
+ dif= (int)(d1->dstat.st_atime - d2->dstat.st_atime);
+ } else if (sort_opts == SORT_CTIME) {
+ dif= (int)(d1->dstat.st_ctime - d2->dstat.st_ctime);
+ } else if (sort_opts == SORT_MTIME) {
+ dif= (int)(d1->dstat.st_mtime - d2->dstat.st_mtime);
+ } else if (sort_opts == SORT_DIR) {
+ dif= S_ISDIR(d1->dstat.st_mode) - S_ISDIR(d2->dstat.st_mode);
+ /* } else if (sort_opts == SORT_VERSION) { */
+ /* } else if (sort_opts == SORT_EXT) { */
+ } else { /* assume SORT_NAME */
+ dif= 0;
+ }
+
+ if (dif > 0) cmp= -1;
+ if (dif < 0) cmp= 1;
+ if (dif == 0) {
+ /* sort by name- may be a tie_breaker for time or size cmp */
+ dif= strcmp(d1->name, d2->name);
+ if (dif > 0) cmp= 1;
+ if (dif < 0) cmp= -1;
}
- /* Otherwise, it's a directory we want to list the contents of */
+ if (sort_order == SORT_REVERSE) {
+ cmp= -1 * cmp;
+ }
+ return(cmp);
+}
- if (opts & DISP_DIRNAME) { /* identify the directory */
- if (column)
- wr("\n\n", 2), column = 0;
- wr(name, strlen(name));
- wr(":\n", 2);
+/*----------------------------------------------------------------------*/
+void shellsort(struct dnode **dn, int size)
+{
+ struct dnode *temp;
+ int gap, i, j;
+
+ /* shell short the array */
+ if(dn==NULL || size < 2) return;
+
+ for (gap= size/2; gap>0; gap /=2) {
+ for (i=gap; i<size; i++) {
+ for (j= i-gap; j>=0; j-=gap) {
+ if (sortcmp(dn[j], dn[j+gap]) <= 0)
+ break;
+ /* they are out of order, swap them */
+ temp= dn[j];
+ dn[j]= dn[j+gap];
+ dn[j+gap]= temp;
+ }
+ }
}
+}
+#endif
- dir = opendir(name);
- if (!dir)
- goto listerr;
+/*----------------------------------------------------------------------*/
+void showfiles(struct dnode **dn, int nfiles)
+{
+ int i, ncols, nrows, row, nc;
#ifdef BB_FEATURE_AUTOWIDTH
- column_width = 0;
- while ((entry = readdir(dir)) != NULL) {
- short w = strlen(entry->d_name);
+ int len;
+#endif
- if (column_width < w)
- column_width = w;
+ if(dn==NULL || nfiles < 1) return;
+
+#ifdef BB_FEATURE_AUTOWIDTH
+ /* find the longest file name- use that as the column width */
+ column_width= 0;
+ for (i=0; i<nfiles; i++) {
+ len= strlen(dn[i]->name) +
+ ((list_fmt & LIST_INO) ? 8 : 0) +
+ ((list_fmt & LIST_BLOCKS) ? 5 : 0)
+ ;
+ if (column_width < len)
+ column_width= len;
+ }
+ if (column_width >= 6)
+ ncols = (int)(terminal_width / (column_width + COLUMN_GAP));
+ else {
+ ncols = 1;
+ column_width = COLUMN_WIDTH;
}
-#ifdef HAS_REWINDDIR
- rewinddir(dir);
#else
- closedir(dir);
- dir = opendir(name);
- if (!dir)
- goto listerr;
+ ncols= TERMINAL_WIDTH;
#endif
+ switch (style_fmt) {
+ case STYLE_LONG: /* one record per line, extended info */
+ case STYLE_SINGLE: /* one record per line */
+ ncols= 1;
+ break;
+ }
+
+ if (ncols > 1) {
+ nrows = nfiles / ncols;
+ } else {
+ nrows = nfiles;
+ ncols = 1;
+ }
+ if ((nrows * ncols) < nfiles) nrows++; /* round up fractionals */
+
+ if (nrows > nfiles) nrows= nfiles;
+ for (row=0; row<nrows; row++) {
+ for (nc=0; nc<ncols; nc++) {
+ /* reach into the array based on the column and row */
+ i= (nc * nrows) + row; /* assume display by column */
+ if (disp_opts & DISP_ROWS)
+ i= (row * ncols) + nc; /* display across row */
+ if (i < nfiles) {
+ nexttabstop();
+ list_single(dn[i]);
+ }
+ }
+ newline();
+ }
+}
+
+/*----------------------------------------------------------------------*/
+void showdirs(struct dnode **dn, int ndirs)
+{
+ int i, nfiles;
+ struct dnode **subdnp;
+#ifdef BB_FEATURE_LS_RECURSIVE
+ int dndirs;
+ struct dnode **dnd;
#endif
- /* List the contents */
+ if (dn==NULL || ndirs < 1) return;
- strcpy(fullname, name); /* *** ignore '.' by itself */
- fnend = fullname + strlen(fullname);
- if (fnend[-1] != '/')
- *fnend++ = '/';
+ 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 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) {
- const char *en = entry->d_name;
-
- if (en[0] == '.') {
- if (!en[1] || (en[1] == '.' && !en[2])) { /* . or .. */
- if (!(opts & DISP_DOT))
- continue;
- } else if (!(opts & DISP_HIDDEN))
- continue;
- }
- /* FIXME: avoid stat if not required */
- strcpy(fnend, entry->d_name);
- if (lstat(fullname, &info))
- goto direrr; /* (shouldn't fail) */
- list_single(entry->d_name, &info, fullname);
+ /* 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);
- if (opts & DISP_DIRNAME) { /* separate the directory */
- if (column) {
- wr("\n", 1);
- }
- wr("\n", 1);
- column = 0;
+ /* 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 0;
-
- direrr:
- closedir(dir);
- listerr:
- newline();
- perror(name);
- return 1;
+ return(dnp);
}
-static const char ls_usage[] = "ls [-1a"
+/*----------------------------------------------------------------------*/
+int list_single(struct dnode *dn)
+{
+ int i, len;
+ char scratch[BUFSIZ + 1];
#ifdef BB_FEATURE_LS_TIMESTAMPS
- "c"
+ char *filetime;
+ time_t ttime, age;
#endif
- "d"
-#ifdef BB_FEATURE_LS_TIMESTAMPS
- "e"
+#if defined (BB_FEATURE_LS_FILETYPES)
+ struct stat info;
#endif
- "ln"
#ifdef BB_FEATURE_LS_FILETYPES
- "p"
+ char append;
#endif
+
+ if (dn==NULL || dn->fullname==NULL) return(0);
+
#ifdef BB_FEATURE_LS_TIMESTAMPS
- "u"
+ 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
- "xAC"
#ifdef BB_FEATURE_LS_FILETYPES
- "F"
+ append = append_char(dn->dstat.st_mode);
#endif
-#ifdef BB_FEATURE_LS_RECURSIVE
- "R"
+
+ 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
- "] [filenames...]\n"
-#ifndef BB_FEATURE_TRIVIAL_HELP
- "\nList directory contents\n\n"
- "Options:\n"
- "\t-a\tdo not hide entries starting with .\n"
-#ifdef BB_FEATURE_LS_TIMESTAMPS
- "\t-c\twith -l: show ctime (the time of last\n"
- "\t\tmodification of file status information)\n"
#endif
- "\t-d\tlist directory entries instead of contents\n"
-#ifdef BB_FEATURE_LS_TIMESTAMPS
- "\t-e\tlist both full date and full time\n"
+ 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
- "\t-l\tuse a long listing format\n"
- "\t-n\tlist numeric UIDs and GIDs instead of names\n"
-#ifdef BB_FEATURE_LS_FILETYPES
- "\t-p\tappend indicator (one of /=@|) to entries\n"
#endif
+ }
+ column += 10;
+ break;
#ifdef BB_FEATURE_LS_TIMESTAMPS
- "\t-u\twith -l: show access time (the time of last\n"
- "\t\taccess of the file)\n"
+ 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
- "\t-x\tlist entries by lines instead of by columns\n"
- "\t-A\tdo not list implied . and ..\n"
- "\t-C\tlist entries by columns\n"
+ 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
- "\t-F\tappend indicator (one of */=@|) to entries\n"
-#endif
-#ifdef BB_FEATURE_LS_RECURSIVE
- "\t-R\tlist subdirectories recursively\n"
+ 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
- ;
-
+ }
+ }
-#ifdef BB_FEATURE_LS_RECURSIVE
-static int dirAction(const char *fileName, struct stat *statbuf, void* junk)
-{
- int i;
- fprintf(stdout, "\n%s:\n", fileName);
- i = list_item(fileName);
- newline();
- return (i);
+ return(0);
}
-#endif
+/*----------------------------------------------------------------------*/
extern int ls_main(int argc, char **argv)
{
- int argi = 1, i;
+ 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
- /* process options */
- while (argi < argc && argv[argi][0] == '-') {
- const char *p = &argv[argi][1];
-
- if (!*p)
- goto print_usage_message; /* "-" by itself not allowed */
- if (*p == '-') {
- if (!p[1]) { /* "--" forces end of options */
- argi++;
- break;
- }
- /* it's a long option name - we don't support them */
- goto print_usage_message;
- }
+ 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;
- while (*p)
- switch (*p++) {
+ /* 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':
- display_fmt = FMT_LONG;
- break;
- case '1':
- display_fmt = FMT_SINGLE;
- break;
- case 'x':
- display_fmt = FMT_ROWS;
- break;
- case 'C':
- display_fmt = FMT_COLUMNS;
- break;
+ 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 'p':
- opts |= DISP_FTYPE;
- break;
- case 'F':
- opts |= DISP_FTYPE | DISP_EXEC;
- break;
+ 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
- case 'A':
- opts |= DISP_HIDDEN;
- break;
- case 'a':
- opts |= DISP_HIDDEN | DISP_DOT;
- break;
- case 'n':
- opts |= DISP_NUMERIC;
- break;
- case 'd':
- opts |= DIR_NOLIST;
- break;
#ifdef BB_FEATURE_LS_TIMESTAMPS
- case 'u':
- time_fmt = TIME_ACCESS;
- break;
+ 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 'e':
- opts |= DISP_FULLTIME;
- break;
+ case 'u':
+ time_fmt = TIME_ACCESS;
+#ifdef BB_FEATURE_LS_SORTFILES
+ sort_opts= SORT_ATIME;
#endif
-#ifdef BB_FEATURE_LS_RECURSIVE
- case 'R':
- opts |= DISP_RECURSIVE;
break;
+ case 't':
+#ifdef BB_FEATURE_LS_SORTFILES
+ sort_opts= SORT_MTIME;
#endif
- case 'g': /* ignore -- for ftp servers */
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;
- }
-
- argi++;
+ }
}
+ /* 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 (display_fmt == FMT_AUTO)
- display_fmt = isatty(fileno(stdout)) ? FMT_COLUMNS : FMT_SINGLE;
- if (argi < argc - 1)
- opts |= DISP_DIRNAME; /* 2 or more items? label directories */
-#ifdef BB_FEATURE_AUTOWIDTH
- /* could add a -w option and/or TIOCGWINSZ call */
- if (terminal_width < 1)
- terminal_width = TERMINAL_WIDTH;
+ 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 */
+ }
+ }
- for (i = argi; i < argc; i++) {
- int len = strlen(argv[i]);
+ /* 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++;
+ }
- if (toplevel_column_width < len)
- toplevel_column_width = len;
+ /* 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;
}
-#endif
- /* process files specified, or current directory if none */
-#ifdef BB_FEATURE_LS_RECURSIVE
- if (opts & DISP_RECURSIVE) {
- i = 0;
- if (argi == argc) {
- i = recursiveAction(".", TRUE, FALSE, FALSE, NULL, dirAction, NULL);
+
+ 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);
}
- while (argi < argc) {
- i |= recursiveAction(argv[argi++], TRUE, FALSE, FALSE, NULL, dirAction, NULL);
+ if (dndirs > 0) {
+#ifdef BB_FEATURE_LS_SORTFILES
+ shellsort(dnd, dndirs);
+#endif
+ showdirs(dnd, dndirs);
}
- } else
-#endif
- {
- i = 0;
- if (argi == argc)
- i = list_item(".");
- while (argi < argc)
- i |= list_item(argv[argi++]);
- newline();
}
- exit(i);
+ return(status);
print_usage_message:
- usage(ls_usage);
- exit(FALSE);
+ show_usage();
}
projects / oweals / busybox.git / blobdiff