Eric Andersen | 9d3aba7 | 1999-10-06 09:04:55 +0000 | [diff] [blame] | 1 | /* |
Eric Andersen | cc8ed39 | 1999-10-05 16:24:54 +0000 | [diff] [blame] | 2 | * tiny-ls.c version 0.1.0: A minimalist 'ls' |
| 3 | * Copyright (C) 1996 Brian Candler <B.Candler@pobox.com> |
| 4 | * |
| 5 | * This program is free software; you can redistribute it and/or modify |
| 6 | * it under the terms of the GNU General Public License as published by |
| 7 | * the Free Software Foundation; either version 2 of the License, or |
| 8 | * (at your option) any later version. |
| 9 | * |
| 10 | * This program is distributed in the hope that it will be useful, |
| 11 | * but WITHOUT ANY WARRANTY; without even the implied warranty of |
| 12 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
| 13 | * GNU General Public License for more details. |
| 14 | * |
| 15 | * You should have received a copy of the GNU General Public License |
| 16 | * along with this program; if not, write to the Free Software |
| 17 | * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. |
| 18 | */ |
| 19 | |
| 20 | /* |
| 21 | * To achieve a small memory footprint, this version of 'ls' doesn't do any |
| 22 | * file sorting, and only has the most essential command line switches |
| 23 | * (i.e. the ones I couldn't live without :-) All features which involve |
| 24 | * linking in substantial chunks of libc can be disabled. |
| 25 | * |
| 26 | * Although I don't really want to add new features to this program to |
| 27 | * keep it small, I *am* interested to receive bug fixes and ways to make |
| 28 | * it more portable. |
| 29 | * |
| 30 | * KNOWN BUGS: |
| 31 | * 1. messy output if you mix files and directories on the command line |
| 32 | * 2. ls -l of a directory doesn't give "total <blocks>" header |
| 33 | * 3. ls of a symlink to a directory doesn't list directory contents |
| 34 | * 4. hidden files can make column width too large |
| 35 | * NON-OPTIMAL BEHAVIOUR: |
| 36 | * 1. autowidth reads directories twice |
| 37 | * 2. if you do a short directory listing without filetype characters |
| 38 | * appended, there's no need to stat each one |
| 39 | * PORTABILITY: |
| 40 | * 1. requires lstat (BSD) - how do you do it without? |
| 41 | */ |
| 42 | |
Eric Andersen | cc8ed39 | 1999-10-05 16:24:54 +0000 | [diff] [blame] | 43 | #define TERMINAL_WIDTH 80 /* use 79 if your terminal has linefold bug */ |
| 44 | #define COLUMN_WIDTH 14 /* default if AUTOWIDTH not defined */ |
| 45 | #define COLUMN_GAP 2 /* includes the file type char, if present */ |
Eric Andersen | 3c16382 | 1999-10-14 22:16:57 +0000 | [diff] [blame] | 46 | #define HAS_REWINDDIR |
Eric Andersen | cc8ed39 | 1999-10-05 16:24:54 +0000 | [diff] [blame] | 47 | |
| 48 | /************************************************************************/ |
| 49 | |
Eric Andersen | e77ae3a | 1999-10-19 20:03:34 +0000 | [diff] [blame] | 50 | #include "internal.h" |
| 51 | #if !defined(__GLIBC__) && (__GLIBC__ >= 2) && (__GLIBC_MINOR__ >= 1) |
Eric Andersen | cc8ed39 | 1999-10-05 16:24:54 +0000 | [diff] [blame] | 52 | # include <linux/types.h> |
| 53 | #else |
| 54 | # include <sys/types.h> |
| 55 | #endif |
| 56 | #include <sys/stat.h> |
| 57 | #include <stdio.h> |
| 58 | #include <unistd.h> |
| 59 | #include <dirent.h> |
| 60 | #include <errno.h> |
| 61 | #include <stdio.h> |
Eric Andersen | e1850dd | 1999-11-19 05:42:32 +0000 | [diff] [blame] | 62 | #ifdef BB_FEATURE_LS_TIMESTAMPS |
Eric Andersen | cc8ed39 | 1999-10-05 16:24:54 +0000 | [diff] [blame] | 63 | #include <time.h> |
| 64 | #endif |
| 65 | |
| 66 | #define TYPEINDEX(mode) (((mode) >> 12) & 0x0f) |
| 67 | #define TYPECHAR(mode) ("0pcCd?bB-?l?s???" [TYPEINDEX(mode)]) |
Eric Andersen | e1850dd | 1999-11-19 05:42:32 +0000 | [diff] [blame] | 68 | #ifdef BB_FEATURE_LS_FILETYPES |
Eric Andersen | cc8ed39 | 1999-10-05 16:24:54 +0000 | [diff] [blame] | 69 | #define APPCHAR(mode) ("\0|\0\0/\0\0\0\0\0@\0=\0\0\0" [TYPEINDEX(mode)]) |
| 70 | #endif |
| 71 | |
| 72 | #ifndef MAJOR |
| 73 | #define MAJOR(dev) (((dev)>>8)&0xff) |
| 74 | #define MINOR(dev) ((dev)&0xff) |
| 75 | #endif |
| 76 | |
Eric Andersen | cc8ed39 | 1999-10-05 16:24:54 +0000 | [diff] [blame] | 77 | #define FMT_AUTO 0 |
| 78 | #define FMT_LONG 1 /* one record per line, extended info */ |
| 79 | #define FMT_SINGLE 2 /* one record per line */ |
| 80 | #define FMT_ROWS 3 /* print across rows */ |
| 81 | #define FMT_COLUMNS 3 /* fill columns (same, since we don't sort) */ |
| 82 | |
| 83 | #define TIME_MOD 0 |
| 84 | #define TIME_CHANGE 1 |
| 85 | #define TIME_ACCESS 2 |
| 86 | |
| 87 | #define DISP_FTYPE 1 /* show character for file type */ |
| 88 | #define DISP_EXEC 2 /* show '*' if regular executable file */ |
| 89 | #define DISP_HIDDEN 4 /* show files starting . (except . and ..) */ |
| 90 | #define DISP_DOT 8 /* show . and .. */ |
| 91 | #define DISP_NUMERIC 16 /* numeric uid and gid */ |
| 92 | #define DISP_FULLTIME 32 /* show extended time display */ |
| 93 | #define DIR_NOLIST 64 /* show directory as itself, not contents */ |
| 94 | #define DISP_DIRNAME 128 /* show directory name (for internal use) */ |
| 95 | #define DIR_RECURSE 256 /* -R (not yet implemented) */ |
| 96 | |
| 97 | static unsigned char display_fmt = FMT_AUTO; |
| 98 | static unsigned short opts = 0; |
| 99 | static unsigned short column = 0; |
| 100 | |
Eric Andersen | e1850dd | 1999-11-19 05:42:32 +0000 | [diff] [blame] | 101 | #ifdef BB_FEATURE_AUTOWIDTH |
Eric Andersen | cc8ed39 | 1999-10-05 16:24:54 +0000 | [diff] [blame] | 102 | static unsigned short terminal_width = 0, column_width = 0; |
| 103 | #else |
| 104 | #define terminal_width TERMINAL_WIDTH |
| 105 | #define column_width COLUMN_WIDTH |
| 106 | #endif |
| 107 | |
Eric Andersen | e1850dd | 1999-11-19 05:42:32 +0000 | [diff] [blame] | 108 | #ifdef BB_FEATURE_LS_TIMESTAMPS |
Eric Andersen | cc8ed39 | 1999-10-05 16:24:54 +0000 | [diff] [blame] | 109 | static unsigned char time_fmt = TIME_MOD; |
| 110 | #endif |
| 111 | |
| 112 | #define wr(data,len) fwrite(data, 1, len, stdout) |
| 113 | |
| 114 | static void writenum(long val, short minwidth) |
| 115 | { |
Eric Andersen | e77ae3a | 1999-10-19 20:03:34 +0000 | [diff] [blame] | 116 | char scratch[128]; |
Eric Andersen | cc8ed39 | 1999-10-05 16:24:54 +0000 | [diff] [blame] | 117 | |
| 118 | char *p = scratch + sizeof(scratch); |
| 119 | short len = 0; |
| 120 | short neg = (val < 0); |
| 121 | |
| 122 | if (neg) val = -val; |
| 123 | do |
| 124 | *--p = (val % 10) + '0', len++, val /= 10; |
| 125 | while (val); |
| 126 | if (neg) |
| 127 | *--p = '-', len++; |
| 128 | while (len < minwidth) |
| 129 | *--p = ' ', len++; |
| 130 | wr(p, len); |
| 131 | column += len; |
| 132 | } |
| 133 | |
| 134 | static void newline(void) |
| 135 | { |
| 136 | if (column > 0) { |
| 137 | wr("\n", 1); |
| 138 | column = 0; |
| 139 | } |
| 140 | } |
| 141 | |
| 142 | static void tab(short col) |
| 143 | { |
| 144 | static const char spaces[] = " "; |
| 145 | #define nspaces ((sizeof spaces)-1) /* null terminator! */ |
| 146 | |
| 147 | short n = col - column; |
| 148 | |
| 149 | if (n > 0) { |
| 150 | column = col; |
| 151 | while (n > nspaces) { |
| 152 | wr(spaces, nspaces); |
| 153 | n -= nspaces; |
| 154 | } |
| 155 | /* must be 1...(sizeof spaces) left */ |
| 156 | wr(spaces, n); |
| 157 | } |
| 158 | #undef nspaces |
| 159 | } |
| 160 | |
Eric Andersen | e1850dd | 1999-11-19 05:42:32 +0000 | [diff] [blame] | 161 | #ifdef BB_FEATURE_LS_FILETYPES |
Eric Andersen | e77ae3a | 1999-10-19 20:03:34 +0000 | [diff] [blame] | 162 | static char append_char(mode_t mode) |
Eric Andersen | cc8ed39 | 1999-10-05 16:24:54 +0000 | [diff] [blame] | 163 | { |
| 164 | if (!(opts & DISP_FTYPE)) |
| 165 | return '\0'; |
| 166 | if ((opts & DISP_EXEC) && S_ISREG(mode) && (mode & (S_IXUSR|S_IXGRP|S_IXOTH))) |
| 167 | return '*'; |
| 168 | return APPCHAR(mode); |
| 169 | } |
| 170 | #endif |
| 171 | |
| 172 | /** |
| 173 | ** |
| 174 | ** Display a file or directory as a single item |
| 175 | ** (in either long or short format) |
| 176 | ** |
| 177 | **/ |
| 178 | |
Eric Andersen | 07e5297 | 1999-11-07 07:38:08 +0000 | [diff] [blame] | 179 | static void list_single(const char *name, struct stat *info, const char *fullname) |
Eric Andersen | cc8ed39 | 1999-10-05 16:24:54 +0000 | [diff] [blame] | 180 | { |
Eric Andersen | e77ae3a | 1999-10-19 20:03:34 +0000 | [diff] [blame] | 181 | char scratch[PATH_MAX]; |
Eric Andersen | cc8ed39 | 1999-10-05 16:24:54 +0000 | [diff] [blame] | 182 | short len = strlen(name); |
Eric Andersen | e1850dd | 1999-11-19 05:42:32 +0000 | [diff] [blame] | 183 | #ifdef BB_FEATURE_LS_FILETYPES |
Eric Andersen | cc8ed39 | 1999-10-05 16:24:54 +0000 | [diff] [blame] | 184 | char append = append_char(info->st_mode); |
| 185 | #endif |
| 186 | |
| 187 | if (display_fmt == FMT_LONG) { |
Eric Andersen | e77ae3a | 1999-10-19 20:03:34 +0000 | [diff] [blame] | 188 | mode_t mode = info->st_mode; |
Eric Andersen | cc8ed39 | 1999-10-05 16:24:54 +0000 | [diff] [blame] | 189 | newline(); |
Eric Andersen | 50d6360 | 1999-11-09 01:47:36 +0000 | [diff] [blame] | 190 | wr(modeString(mode), 10); |
Eric Andersen | cc8ed39 | 1999-10-05 16:24:54 +0000 | [diff] [blame] | 191 | column=10; |
Eric Andersen | 50d6360 | 1999-11-09 01:47:36 +0000 | [diff] [blame] | 192 | writenum((long)info->st_nlink,(short)5); |
Eric Andersen | cc8ed39 | 1999-10-05 16:24:54 +0000 | [diff] [blame] | 193 | fputs(" ", stdout); |
Eric Andersen | e1850dd | 1999-11-19 05:42:32 +0000 | [diff] [blame] | 194 | #ifdef BB_FEATURE_LS_USERNAME |
Eric Andersen | cc8ed39 | 1999-10-05 16:24:54 +0000 | [diff] [blame] | 195 | if (!(opts & DISP_NUMERIC)) { |
Eric Andersen | 394f764 | 1999-11-23 21:38:12 +0000 | [diff] [blame] | 196 | scratch[0]='\0'; |
Eric Andersen | 50d6360 | 1999-11-09 01:47:36 +0000 | [diff] [blame] | 197 | my_getpwuid( scratch, info->st_uid); |
Eric Andersen | 394f764 | 1999-11-23 21:38:12 +0000 | [diff] [blame] | 198 | scratch[8]='\0'; |
Eric Andersen | 50d6360 | 1999-11-09 01:47:36 +0000 | [diff] [blame] | 199 | if (*scratch) |
Eric Andersen | 394f764 | 1999-11-23 21:38:12 +0000 | [diff] [blame] | 200 | wr(scratch,8); |
| 201 | else { |
| 202 | writenum((long) info->st_uid,(short)8); |
| 203 | fputs(" ", stdout); |
| 204 | } |
Eric Andersen | cc8ed39 | 1999-10-05 16:24:54 +0000 | [diff] [blame] | 205 | } else |
| 206 | #endif |
Eric Andersen | 394f764 | 1999-11-23 21:38:12 +0000 | [diff] [blame] | 207 | { |
| 208 | writenum((long) info->st_uid,(short)8); |
| 209 | fputs(" ", stdout); |
| 210 | } |
Eric Andersen | 50d6360 | 1999-11-09 01:47:36 +0000 | [diff] [blame] | 211 | tab(16); |
Eric Andersen | e1850dd | 1999-11-19 05:42:32 +0000 | [diff] [blame] | 212 | #ifdef BB_FEATURE_LS_USERNAME |
Eric Andersen | cc8ed39 | 1999-10-05 16:24:54 +0000 | [diff] [blame] | 213 | if (!(opts & DISP_NUMERIC)) { |
Eric Andersen | 394f764 | 1999-11-23 21:38:12 +0000 | [diff] [blame] | 214 | scratch[0]='\0'; |
Eric Andersen | 50d6360 | 1999-11-09 01:47:36 +0000 | [diff] [blame] | 215 | my_getgrgid( scratch, info->st_gid); |
Eric Andersen | 394f764 | 1999-11-23 21:38:12 +0000 | [diff] [blame] | 216 | scratch[8]='\0'; |
Eric Andersen | 50d6360 | 1999-11-09 01:47:36 +0000 | [diff] [blame] | 217 | if (*scratch) |
Eric Andersen | 394f764 | 1999-11-23 21:38:12 +0000 | [diff] [blame] | 218 | wr(scratch,8); |
| 219 | else |
| 220 | writenum((long) info->st_gid,(short)8); |
Eric Andersen | cc8ed39 | 1999-10-05 16:24:54 +0000 | [diff] [blame] | 221 | } else |
| 222 | #endif |
Eric Andersen | 394f764 | 1999-11-23 21:38:12 +0000 | [diff] [blame] | 223 | writenum((long) info->st_gid,(short)8); |
Eric Andersen | 50d6360 | 1999-11-09 01:47:36 +0000 | [diff] [blame] | 224 | tab(17); |
Eric Andersen | cc8ed39 | 1999-10-05 16:24:54 +0000 | [diff] [blame] | 225 | if (S_ISBLK(mode) || S_ISCHR(mode)) { |
| 226 | writenum((long)MAJOR(info->st_rdev),(short)3); |
| 227 | fputs(", ", stdout); |
| 228 | writenum((long)MINOR(info->st_rdev),(short)3); |
| 229 | } |
| 230 | else |
| 231 | writenum((long)info->st_size,(short)8); |
| 232 | fputs(" ", stdout); |
Eric Andersen | e1850dd | 1999-11-19 05:42:32 +0000 | [diff] [blame] | 233 | #ifdef BB_FEATURE_LS_TIMESTAMPS |
Eric Andersen | cc8ed39 | 1999-10-05 16:24:54 +0000 | [diff] [blame] | 234 | { |
| 235 | time_t cal; |
| 236 | char *string; |
| 237 | |
| 238 | switch(time_fmt) { |
| 239 | case TIME_CHANGE: |
| 240 | cal=info->st_ctime; break; |
| 241 | case TIME_ACCESS: |
| 242 | cal=info->st_atime; break; |
| 243 | default: |
| 244 | cal=info->st_mtime; break; |
| 245 | } |
| 246 | string=ctime(&cal); |
| 247 | if (opts & DISP_FULLTIME) |
| 248 | wr(string,24); |
| 249 | else { |
| 250 | time_t age = time(NULL) - cal; |
| 251 | wr(string+4,7); /* mmm_dd_ */ |
| 252 | if(age < 3600L*24*365/2 && age > -15*60) |
| 253 | /* hh:mm if less than 6 months old */ |
| 254 | wr(string+11,5); |
| 255 | else |
| 256 | /* _yyyy otherwise */ |
| 257 | wr(string+19,5); |
| 258 | } |
| 259 | wr(" ", 1); |
| 260 | } |
| 261 | #else |
| 262 | fputs("--- -- ----- ", stdout); |
| 263 | #endif |
| 264 | wr(name, len); |
| 265 | if (S_ISLNK(mode)) { |
| 266 | wr(" -> ", 4); |
Eric Andersen | 07e5297 | 1999-11-07 07:38:08 +0000 | [diff] [blame] | 267 | len = readlink(fullname, scratch, sizeof scratch); |
Eric Andersen | cc8ed39 | 1999-10-05 16:24:54 +0000 | [diff] [blame] | 268 | if (len > 0) fwrite(scratch, 1, len, stdout); |
Eric Andersen | e1850dd | 1999-11-19 05:42:32 +0000 | [diff] [blame] | 269 | #ifdef BB_FEATURE_LS_FILETYPES |
Eric Andersen | cc8ed39 | 1999-10-05 16:24:54 +0000 | [diff] [blame] | 270 | /* show type of destination */ |
| 271 | if (opts & DISP_FTYPE) { |
Eric Andersen | 07e5297 | 1999-11-07 07:38:08 +0000 | [diff] [blame] | 272 | if (!stat(fullname, info)) { |
Eric Andersen | cc8ed39 | 1999-10-05 16:24:54 +0000 | [diff] [blame] | 273 | append = append_char(info->st_mode); |
| 274 | if (append) |
| 275 | fputc(append, stdout); |
| 276 | } |
| 277 | } |
| 278 | #endif |
| 279 | } |
Eric Andersen | e1850dd | 1999-11-19 05:42:32 +0000 | [diff] [blame] | 280 | #ifdef BB_FEATURE_LS_FILETYPES |
Eric Andersen | cc8ed39 | 1999-10-05 16:24:54 +0000 | [diff] [blame] | 281 | else if (append) |
| 282 | wr(&append, 1); |
| 283 | #endif |
| 284 | } else { |
| 285 | static short nexttab = 0; |
| 286 | |
| 287 | /* sort out column alignment */ |
| 288 | if (column == 0) |
| 289 | ; /* nothing to do */ |
| 290 | else if (display_fmt == FMT_SINGLE) |
| 291 | newline(); |
| 292 | else { |
| 293 | if (nexttab + column_width > terminal_width |
Eric Andersen | e1850dd | 1999-11-19 05:42:32 +0000 | [diff] [blame] | 294 | #ifndef BB_FEATURE_AUTOWIDTH |
Eric Andersen | cc8ed39 | 1999-10-05 16:24:54 +0000 | [diff] [blame] | 295 | || nexttab + len >= terminal_width |
| 296 | #endif |
| 297 | ) |
| 298 | newline(); |
| 299 | else |
| 300 | tab(nexttab); |
| 301 | } |
| 302 | /* work out where next column starts */ |
Eric Andersen | e1850dd | 1999-11-19 05:42:32 +0000 | [diff] [blame] | 303 | #ifdef BB_FEATURE_AUTOWIDTH |
Eric Andersen | cc8ed39 | 1999-10-05 16:24:54 +0000 | [diff] [blame] | 304 | /* we know the calculated width is big enough */ |
| 305 | nexttab = column + column_width + COLUMN_GAP; |
| 306 | #else |
| 307 | /* might cover more than one fixed-width column */ |
| 308 | nexttab = column; |
| 309 | do |
| 310 | nexttab += column_width + COLUMN_GAP; |
| 311 | while (nexttab < (column + len + COLUMN_GAP)); |
| 312 | #endif |
| 313 | /* now write the data */ |
| 314 | wr(name, len); |
| 315 | column = column + len; |
Eric Andersen | e1850dd | 1999-11-19 05:42:32 +0000 | [diff] [blame] | 316 | #ifdef BB_FEATURE_LS_FILETYPES |
Eric Andersen | cc8ed39 | 1999-10-05 16:24:54 +0000 | [diff] [blame] | 317 | if (append) |
| 318 | wr(&append, 1), column++; |
| 319 | #endif |
| 320 | } |
| 321 | } |
| 322 | |
| 323 | /** |
| 324 | ** |
| 325 | ** List the given file or directory, expanding a directory |
| 326 | ** to show its contents if required |
| 327 | ** |
| 328 | **/ |
| 329 | |
| 330 | static int list_item(const char *name) |
| 331 | { |
| 332 | struct stat info; |
| 333 | DIR *dir; |
| 334 | struct dirent *entry; |
| 335 | char fullname[MAXNAMLEN+1], *fnend; |
| 336 | |
| 337 | if (lstat(name, &info)) |
| 338 | goto listerr; |
| 339 | |
| 340 | if (!S_ISDIR(info.st_mode) || |
| 341 | (opts & DIR_NOLIST)) { |
Eric Andersen | 07e5297 | 1999-11-07 07:38:08 +0000 | [diff] [blame] | 342 | list_single(name, &info, name); |
Eric Andersen | cc8ed39 | 1999-10-05 16:24:54 +0000 | [diff] [blame] | 343 | return 0; |
| 344 | } |
| 345 | |
| 346 | /* Otherwise, it's a directory we want to list the contents of */ |
| 347 | |
| 348 | if (opts & DISP_DIRNAME) { /* identify the directory */ |
| 349 | if (column) |
| 350 | wr("\n\n", 2), column = 0; |
| 351 | wr(name, strlen(name)); |
| 352 | wr(":\n", 2); |
| 353 | } |
| 354 | |
| 355 | dir = opendir(name); |
| 356 | if (!dir) goto listerr; |
Eric Andersen | e1850dd | 1999-11-19 05:42:32 +0000 | [diff] [blame] | 357 | #ifdef BB_FEATURE_AUTOWIDTH |
Eric Andersen | cc8ed39 | 1999-10-05 16:24:54 +0000 | [diff] [blame] | 358 | column_width = 0; |
| 359 | while ((entry = readdir(dir)) != NULL) { |
| 360 | short w = strlen(entry->d_name); |
| 361 | if (column_width < w) |
| 362 | column_width = w; |
| 363 | } |
| 364 | #ifdef HAS_REWINDDIR |
| 365 | rewinddir(dir); |
| 366 | #else |
| 367 | closedir(dir); |
| 368 | dir = opendir(name); |
| 369 | if (!dir) goto listerr; |
| 370 | #endif |
| 371 | #endif |
| 372 | |
| 373 | /* List the contents */ |
| 374 | |
| 375 | strcpy(fullname,name); /* *** ignore '.' by itself */ |
| 376 | fnend=fullname+strlen(fullname); |
| 377 | if (fnend[-1] != '/') |
| 378 | *fnend++ = '/'; |
| 379 | |
| 380 | while ((entry = readdir(dir)) != NULL) { |
| 381 | const char *en=entry->d_name; |
| 382 | if (en[0] == '.') { |
| 383 | if (!en[1] || (en[1] == '.' && !en[2])) { /* . or .. */ |
| 384 | if (!(opts & DISP_DOT)) |
| 385 | continue; |
| 386 | } |
| 387 | else if (!(opts & DISP_HIDDEN)) |
| 388 | continue; |
| 389 | } |
| 390 | /* FIXME: avoid stat if not required */ |
| 391 | strcpy(fnend, entry->d_name); |
| 392 | if (lstat(fullname, &info)) |
| 393 | goto direrr; /* (shouldn't fail) */ |
Eric Andersen | 07e5297 | 1999-11-07 07:38:08 +0000 | [diff] [blame] | 394 | list_single(entry->d_name, &info, fullname); |
Eric Andersen | cc8ed39 | 1999-10-05 16:24:54 +0000 | [diff] [blame] | 395 | } |
| 396 | closedir(dir); |
| 397 | return 0; |
| 398 | |
| 399 | direrr: |
| 400 | closedir(dir); |
| 401 | listerr: |
| 402 | newline(); |
Eric Andersen | 9d3aba7 | 1999-10-06 09:04:55 +0000 | [diff] [blame] | 403 | perror(name); |
Eric Andersen | cc8ed39 | 1999-10-05 16:24:54 +0000 | [diff] [blame] | 404 | return 1; |
| 405 | } |
| 406 | |
Eric Andersen | f5a3838 | 1999-10-19 22:26:25 +0000 | [diff] [blame] | 407 | static const char ls_usage[] = "ls [-1a" |
Eric Andersen | e1850dd | 1999-11-19 05:42:32 +0000 | [diff] [blame] | 408 | #ifdef BB_FEATURE_LS_TIMESTAMPS |
Eric Andersen | cc8ed39 | 1999-10-05 16:24:54 +0000 | [diff] [blame] | 409 | "c" |
| 410 | #endif |
| 411 | "d" |
Eric Andersen | e1850dd | 1999-11-19 05:42:32 +0000 | [diff] [blame] | 412 | #ifdef BB_FEATURE_LS_TIMESTAMPS |
Eric Andersen | cc8ed39 | 1999-10-05 16:24:54 +0000 | [diff] [blame] | 413 | "e" |
| 414 | #endif |
| 415 | "ln" |
Eric Andersen | e1850dd | 1999-11-19 05:42:32 +0000 | [diff] [blame] | 416 | #ifdef BB_FEATURE_LS_FILETYPES |
Eric Andersen | cc8ed39 | 1999-10-05 16:24:54 +0000 | [diff] [blame] | 417 | "p" |
| 418 | #endif |
Eric Andersen | e1850dd | 1999-11-19 05:42:32 +0000 | [diff] [blame] | 419 | #ifdef BB_FEATURE_LS_TIMESTAMPS |
Eric Andersen | cc8ed39 | 1999-10-05 16:24:54 +0000 | [diff] [blame] | 420 | "u" |
| 421 | #endif |
| 422 | "xAC" |
Eric Andersen | e1850dd | 1999-11-19 05:42:32 +0000 | [diff] [blame] | 423 | #ifdef BB_FEATURE_LS_FILETYPES |
Eric Andersen | cc8ed39 | 1999-10-05 16:24:54 +0000 | [diff] [blame] | 424 | "F" |
| 425 | #endif |
| 426 | #ifdef FEATURE_RECURSIVE |
| 427 | "R" |
| 428 | #endif |
| 429 | "] [filenames...]\n"; |
| 430 | |
| 431 | extern int |
Eric Andersen | 9d3aba7 | 1999-10-06 09:04:55 +0000 | [diff] [blame] | 432 | ls_main(int argc, char * * argv) |
Eric Andersen | cc8ed39 | 1999-10-05 16:24:54 +0000 | [diff] [blame] | 433 | { |
| 434 | int argi=1, i; |
| 435 | |
| 436 | /* process options */ |
| 437 | while (argi < argc && argv[argi][0] == '-') { |
| 438 | const char *p = &argv[argi][1]; |
| 439 | |
| 440 | if (!*p) goto print_usage_message; /* "-" by itself not allowed */ |
| 441 | if (*p == '-') { |
| 442 | if (!p[1]) { /* "--" forces end of options */ |
| 443 | argi++; |
| 444 | break; |
| 445 | } |
| 446 | /* it's a long option name - we don't support them */ |
| 447 | goto print_usage_message; |
| 448 | } |
| 449 | |
| 450 | while (*p) |
| 451 | switch (*p++) { |
| 452 | case 'l': display_fmt = FMT_LONG; break; |
| 453 | case '1': display_fmt = FMT_SINGLE; break; |
| 454 | case 'x': display_fmt = FMT_ROWS; break; |
| 455 | case 'C': display_fmt = FMT_COLUMNS; break; |
Eric Andersen | e1850dd | 1999-11-19 05:42:32 +0000 | [diff] [blame] | 456 | #ifdef BB_FEATURE_LS_FILETYPES |
Eric Andersen | cc8ed39 | 1999-10-05 16:24:54 +0000 | [diff] [blame] | 457 | case 'p': opts |= DISP_FTYPE; break; |
| 458 | case 'F': opts |= DISP_FTYPE|DISP_EXEC; break; |
| 459 | #endif |
| 460 | case 'A': opts |= DISP_HIDDEN; break; |
| 461 | case 'a': opts |= DISP_HIDDEN|DISP_DOT; break; |
| 462 | case 'n': opts |= DISP_NUMERIC; break; |
| 463 | case 'd': opts |= DIR_NOLIST; break; |
| 464 | #ifdef FEATURE_RECURSIVE |
| 465 | case 'R': opts |= DIR_RECURSE; break; |
| 466 | #endif |
Eric Andersen | e1850dd | 1999-11-19 05:42:32 +0000 | [diff] [blame] | 467 | #ifdef BB_FEATURE_LS_TIMESTAMPS |
Eric Andersen | cc8ed39 | 1999-10-05 16:24:54 +0000 | [diff] [blame] | 468 | case 'u': time_fmt = TIME_ACCESS; break; |
| 469 | case 'c': time_fmt = TIME_CHANGE; break; |
| 470 | case 'e': opts |= DISP_FULLTIME; break; |
| 471 | #endif |
| 472 | default: goto print_usage_message; |
| 473 | } |
| 474 | |
| 475 | argi++; |
| 476 | } |
| 477 | |
| 478 | /* choose a display format */ |
| 479 | if (display_fmt == FMT_AUTO) |
Eric Andersen | 08b1034 | 1999-11-19 02:38:58 +0000 | [diff] [blame] | 480 | display_fmt = isatty(fileno(stdout)) ? FMT_COLUMNS : FMT_SINGLE; |
Eric Andersen | cc8ed39 | 1999-10-05 16:24:54 +0000 | [diff] [blame] | 481 | if (argi < argc - 1) |
| 482 | opts |= DISP_DIRNAME; /* 2 or more items? label directories */ |
Eric Andersen | e1850dd | 1999-11-19 05:42:32 +0000 | [diff] [blame] | 483 | #ifdef BB_FEATURE_AUTOWIDTH |
Eric Andersen | cc8ed39 | 1999-10-05 16:24:54 +0000 | [diff] [blame] | 484 | /* could add a -w option and/or TIOCGWINSZ call */ |
| 485 | if (terminal_width < 1) terminal_width = TERMINAL_WIDTH; |
| 486 | |
| 487 | for (i = argi; i < argc; i++) { |
| 488 | int len = strlen(argv[i]); |
| 489 | if (column_width < len) |
| 490 | column_width = len; |
| 491 | } |
| 492 | #endif |
| 493 | |
| 494 | /* process files specified, or current directory if none */ |
| 495 | i=0; |
| 496 | if (argi == argc) |
| 497 | i = list_item("."); |
| 498 | while (argi < argc) |
| 499 | i |= list_item(argv[argi++]); |
| 500 | newline(); |
Eric Andersen | 2c10301 | 1999-10-13 22:56:11 +0000 | [diff] [blame] | 501 | exit( i); |
Eric Andersen | cc8ed39 | 1999-10-05 16:24:54 +0000 | [diff] [blame] | 502 | |
| 503 | print_usage_message: |
Eric Andersen | b0e9a70 | 1999-10-18 22:28:26 +0000 | [diff] [blame] | 504 | usage (ls_usage); |
Eric Andersen | 2c10301 | 1999-10-13 22:56:11 +0000 | [diff] [blame] | 505 | exit( FALSE); |
Eric Andersen | cc8ed39 | 1999-10-05 16:24:54 +0000 | [diff] [blame] | 506 | } |
Eric Andersen | 9d3aba7 | 1999-10-06 09:04:55 +0000 | [diff] [blame] | 507 | |