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