jim-file.c

   1 /*
   2  * Implements the file command for jim
   3  *
   4  * (c) 2008 Steve Bennett <steveb@workware.net.au>
   5  *
   6  * Redistribution and use in source and binary forms, with or without
   7  * modification, are permitted provided that the following conditions
   8  * are met:
   9  *
  10  * 1. Redistributions of source code must retain the above copyright
  11  *    notice, this list of conditions and the following disclaimer.
  12  * 2. Redistributions in binary form must reproduce the above
  13  *    copyright notice, this list of conditions and the following
  14  *    disclaimer in the documentation and/or other materials
  15  *    provided with the distribution.
  16  *
  17  * THIS SOFTWARE IS PROVIDED BY THE JIM TCL PROJECT ``AS IS'' AND ANY
  18  * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO,
  19  * THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A
  20  * PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
  21  * JIM TCL PROJECT OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT,
  22  * INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
  23  * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
  24  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
  25  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
  26  * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
  27  * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF
  28  * ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  29  *
  30  * The views and conclusions contained in the software and documentation
  31  * are those of the authors and should not be interpreted as representing
  32  * official policies, either expressed or implied, of the Jim Tcl Project.
  33  *
  34  * Based on code originally from Tcl 6.7:
  35  *
  36  * Copyright 1987-1991 Regents of the University of California
  37  * Permission to use, copy, modify, and distribute this
  38  * software and its documentation for any purpose and without
  39  * fee is hereby granted, provided that the above copyright
  40  * notice appear in all copies.  The University of California
  41  * makes no representations about the suitability of this
  42  * software for any purpose.  It is provided "as is" without
  43  * express or implied warranty.
  44  */
  45
  46 #include <limits.h>
  47 #include <stdlib.h>
  48 #include <string.h>
  49 #include <stdio.h>
  50 #include <errno.h>
  51 #include <sys/stat.h>
  52
  53 #include <jimautoconf.h>
  54 #include <jim-subcmd.h>
  55
  56 #ifdef HAVE_UTIMES
  57 #include <sys/time.h>
  58 #endif
  59 #ifdef HAVE_UNISTD_H
  60 #include <unistd.h>
  61 #elif defined(_MSC_VER)
  62 #include <direct.h>
  63 #define F_OK 0
  64 #define W_OK 2
  65 #define R_OK 4
  66 #define S_ISREG(m) (((m) & S_IFMT) == S_IFREG)
  67 #define S_ISDIR(m) (((m) & S_IFMT) == S_IFDIR)
  68 #endif
  69
  70 # ifndef MAXPATHLEN
  71 # define MAXPATHLEN JIM_PATH_LEN
  72 # endif
  73
  74 /*
  75  *----------------------------------------------------------------------
  76  *
  77  * JimGetFileType --
  78  *
  79  *  Given a mode word, returns a string identifying the type of a
  80  *  file.
  81  *
  82  * Results:
  83  *  A static text string giving the file type from mode.
  84  *
  85  * Side effects:
  86  *  None.
  87  *
  88  *----------------------------------------------------------------------
  89  */
  90
  91 static const char *JimGetFileType(int mode)
  92 {
  93     if (S_ISREG(mode)) {
  94         return "file";
  95     }
  96     else if (S_ISDIR(mode)) {
  97         return "directory";
  98     }
  99 #ifdef S_ISCHR
 100     else if (S_ISCHR(mode)) {
 101         return "characterSpecial";
 102     }
 103 #endif
 104 #ifdef S_ISBLK
 105     else if (S_ISBLK(mode)) {
 106         return "blockSpecial";
 107     }
 108 #endif
 109 #ifdef S_ISFIFO
 110     else if (S_ISFIFO(mode)) {
 111         return "fifo";
 112     }
 113 #endif
 114 #ifdef S_ISLNK
 115     else if (S_ISLNK(mode)) {
 116         return "link";
 117     }
 118 #endif
 119 #ifdef S_ISSOCK
 120     else if (S_ISSOCK(mode)) {
 121         return "socket";
 122     }
 123 #endif
 124     return "unknown";
 125 }
 126
 127 /*
 128  *----------------------------------------------------------------------
 129  *
 130  * StoreStatData --
 131  *
 132  *  This is a utility procedure that breaks out the fields of a
 133  *  "stat" structure and stores them in textual form into the
 134  *  elements of an associative array.
 135  *
 136  * Results:
 137  *  Returns a standard Tcl return value.  If an error occurs then
 138  *  a message is left in interp->result.
 139  *
 140  * Side effects:
 141  *  Elements of the associative array given by "varName" are modified.
 142  *
 143  *----------------------------------------------------------------------
 144  */
 145 static void AppendStatElement(Jim_Interp *interp, Jim_Obj *listObj, const char *key, jim_wide value)
 146 {
 147     Jim_ListAppendElement(interp, listObj, Jim_NewStringObj(interp, key, -1));
 148     Jim_ListAppendElement(interp, listObj, Jim_NewIntObj(interp, value));
 149 }
 150
 151 static int StoreStatData(Jim_Interp *interp, Jim_Obj *varName, const struct stat *sb)
 152 {
 153     /* Just use a list to store the data */
 154     Jim_Obj *listObj = Jim_NewListObj(interp, NULL, 0);
 155
 156     AppendStatElement(interp, listObj, "dev", sb->st_dev);
 157     AppendStatElement(interp, listObj, "ino", sb->st_ino);
 158     AppendStatElement(interp, listObj, "mode", sb->st_mode);
 159     AppendStatElement(interp, listObj, "nlink", sb->st_nlink);
 160     AppendStatElement(interp, listObj, "uid", sb->st_uid);
 161     AppendStatElement(interp, listObj, "gid", sb->st_gid);
 162     AppendStatElement(interp, listObj, "size", sb->st_size);
 163     AppendStatElement(interp, listObj, "atime", sb->st_atime);
 164     AppendStatElement(interp, listObj, "mtime", sb->st_mtime);
 165     AppendStatElement(interp, listObj, "ctime", sb->st_ctime);
 166     Jim_ListAppendElement(interp, listObj, Jim_NewStringObj(interp, "type", -1));
 167     Jim_ListAppendElement(interp, listObj, Jim_NewStringObj(interp, JimGetFileType((int)sb->st_mode), -1));
 168
 169     /* Was a variable specified? */
 170     if (varName) {
 171         Jim_Obj *objPtr = Jim_GetVariable(interp, varName, JIM_NONE);
 172         if (objPtr) {
 173             if (Jim_DictSize(interp, objPtr) < 0) {
 174                 /* This message matches the one from Tcl */
 175                 Jim_SetResultFormatted(interp, "can't set \"%#s(dev)\": variable isn't array", varName);
 176                 Jim_FreeNewObj(interp, listObj);
 177                 return JIM_ERR;
 178             }
 179
 180             if (Jim_IsShared(objPtr))
 181                 objPtr = Jim_DuplicateObj(interp, objPtr);
 182
 183             /* Just cheat here and append as a list and convert to a dict */
 184             Jim_ListAppendList(interp, objPtr, listObj);
 185             Jim_DictSize(interp, objPtr);
 186             Jim_InvalidateStringRep(objPtr);
 187
 188             Jim_FreeNewObj(interp, listObj);
 189             listObj = objPtr;
 190         }
 191         Jim_SetVariable(interp, varName, listObj);
 192     }
 193
 194     /* And also return the value */
 195     Jim_SetResult(interp, listObj);
 196
 197     return JIM_OK;
 198 }
 199
 200 static int file_cmd_dirname(Jim_Interp *interp, int argc, Jim_Obj *const *argv)
 201 {
 202     const char *path = Jim_String(argv[0]);
 203     const char *p = strrchr(path, '/');
 204
 205     if (!p && path[0] == '.' && path[1] == '.' && path[2] == '\0') {
 206         Jim_SetResultString(interp, "..", -1);
 207     } else if (!p) {
 208         Jim_SetResultString(interp, ".", -1);
 209     }
 210     else if (p == path) {
 211         Jim_SetResultString(interp, "/", -1);
 212     }
 213 #if defined(__MINGW32__) || defined(_MSC_VER)
 214     else if (p[-1] == ':') {
 215         /* z:/dir => z:/ */
 216         Jim_SetResultString(interp, path, p - path + 1);
 217     }
 218 #endif
 219     else {
 220         Jim_SetResultString(interp, path, p - path);
 221     }
 222     return JIM_OK;
 223 }
 224
 225 static int file_cmd_rootname(Jim_Interp *interp, int argc, Jim_Obj *const *argv)
 226 {
 227     const char *path = Jim_String(argv[0]);
 228     const char *lastSlash = strrchr(path, '/');
 229     const char *p = strrchr(path, '.');
 230
 231     if (p == NULL || (lastSlash != NULL && lastSlash > p)) {
 232         Jim_SetResult(interp, argv[0]);
 233     }
 234     else {
 235         Jim_SetResultString(interp, path, p - path);
 236     }
 237     return JIM_OK;
 238 }
 239
 240 static int file_cmd_extension(Jim_Interp *interp, int argc, Jim_Obj *const *argv)
 241 {
 242     const char *path = Jim_String(argv[0]);
 243     const char *lastSlash = strrchr(path, '/');
 244     const char *p = strrchr(path, '.');
 245
 246     if (p == NULL || (lastSlash != NULL && lastSlash >= p)) {
 247         p = "";
 248     }
 249     Jim_SetResultString(interp, p, -1);
 250     return JIM_OK;
 251 }
 252
 253 static int file_cmd_tail(Jim_Interp *interp, int argc, Jim_Obj *const *argv)
 254 {
 255     const char *path = Jim_String(argv[0]);
 256     const char *lastSlash = strrchr(path, '/');
 257
 258     if (lastSlash) {
 259         Jim_SetResultString(interp, lastSlash + 1, -1);
 260     }
 261     else {
 262         Jim_SetResult(interp, argv[0]);
 263     }
 264     return JIM_OK;
 265 }
 266
 267 static int file_cmd_normalize(Jim_Interp *interp, int argc, Jim_Obj *const *argv)
 268 {
 269 #ifdef HAVE_REALPATH
 270     const char *path = Jim_String(argv[0]);
 271     char *newname = Jim_Alloc(MAXPATHLEN + 1);
 272
 273     if (realpath(path, newname)) {
 274         Jim_SetResult(interp, Jim_NewStringObjNoAlloc(interp, newname, -1));
 275         return JIM_OK;
 276     }
 277     else {
 278         Jim_Free(newname);
 279         Jim_SetResultFormatted(interp, "can't normalize \"%#s\": %s", argv[0], strerror(errno));
 280         return JIM_ERR;
 281     }
 282 #else
 283     Jim_SetResultString(interp, "Not implemented", -1);
 284     return JIM_ERR;
 285 #endif
 286 }
 287
 288 static int file_cmd_join(Jim_Interp *interp, int argc, Jim_Obj *const *argv)
 289 {
 290     int i;
 291     char *newname = Jim_Alloc(MAXPATHLEN + 1);
 292     char *last = newname;
 293
 294     *newname = 0;
 295
 296     /* Simple implementation for now */
 297     for (i = 0; i < argc; i++) {
 298         int len;
 299         const char *part = Jim_GetString(argv[i], &len);
 300
 301         if (*part == '/') {
 302             /* Absolute component, so go back to the start */
 303             last = newname;
 304         }
 305 #if defined(__MINGW32__) || defined(_MSC_VER)
 306         else if (strchr(part, ':')) {
 307             /* Absolute compontent on mingw, so go back to the start */
 308             last = newname;
 309         }
 310 #endif
 311         else if (part[0] == '.') {
 312             if (part[1] == '/') {
 313                 part += 2;
 314                 len -= 2;
 315             }
 316             else if (part[1] == 0 && last != newname) {
 317                 /* Adding '.' to an existing path does nothing */
 318                 continue;
 319             }
 320         }
 321
 322         /* Add a slash if needed */
 323         if (last != newname && last[-1] != '/') {
 324             *last++ = '/';
 325         }
 326
 327         if (len) {
 328             if (last + len - newname >= MAXPATHLEN) {
 329                 Jim_Free(newname);
 330                 Jim_SetResultString(interp, "Path too long", -1);
 331                 return JIM_ERR;
 332             }
 333             memcpy(last, part, len);
 334             last += len;
 335         }
 336
 337         /* Remove a slash if needed */
 338         if (last > newname + 1 && last[-1] == '/') {
 339             *--last = 0;
 340         }
 341     }
 342
 343     *last = 0;
 344
 345     /* Probably need to handle some special cases ... */
 346
 347     Jim_SetResult(interp, Jim_NewStringObjNoAlloc(interp, newname, last - newname));
 348
 349     return JIM_OK;
 350 }
 351
 352 static int file_access(Jim_Interp *interp, Jim_Obj *filename, int mode)
 353 {
 354     Jim_SetResultBool(interp, access(Jim_String(filename), mode) != -1);
 355
 356     return JIM_OK;
 357 }
 358
 359 static int file_cmd_readable(Jim_Interp *interp, int argc, Jim_Obj *const *argv)
 360 {
 361     return file_access(interp, argv[0], R_OK);
 362 }
 363
 364 static int file_cmd_writable(Jim_Interp *interp, int argc, Jim_Obj *const *argv)
 365 {
 366     return file_access(interp, argv[0], W_OK);
 367 }
 368
 369 static int file_cmd_executable(Jim_Interp *interp, int argc, Jim_Obj *const *argv)
 370 {
 371 #ifdef X_OK
 372     return file_access(interp, argv[0], X_OK);
 373 #else
 374     /* If no X_OK, just assume true. */
 375     Jim_SetResultBool(interp, 1);
 376     return JIM_OK;
 377 #endif
 378 }
 379
 380 static int file_cmd_exists(Jim_Interp *interp, int argc, Jim_Obj *const *argv)
 381 {
 382     return file_access(interp, argv[0], F_OK);
 383 }
 384
 385 static int file_cmd_delete(Jim_Interp *interp, int argc, Jim_Obj *const *argv)
 386 {
 387     int force = Jim_CompareStringImmediate(interp, argv[0], "-force");
 388
 389     if (force || Jim_CompareStringImmediate(interp, argv[0], "--")) {
 390         argc++;
 391         argv--;
 392     }
 393
 394     while (argc--) {
 395         const char *path = Jim_String(argv[0]);
 396
 397         if (unlink(path) == -1 && errno != ENOENT) {
 398             if (rmdir(path) == -1) {
 399                 /* Maybe try using the script helper */
 400                 if (!force || Jim_EvalPrefix(interp, "file delete force", 1, argv) != JIM_OK) {
 401                     Jim_SetResultFormatted(interp, "couldn't delete file \"%s\": %s", path,
 402                         strerror(errno));
 403                     return JIM_ERR;
 404                 }
 405             }
 406         }
 407         argv++;
 408     }
 409     return JIM_OK;
 410 }
 411
 412 #ifdef HAVE_MKDIR_ONE_ARG
 413 #define MKDIR_DEFAULT(PATHNAME) mkdir(PATHNAME)
 414 #else
 415 #define MKDIR_DEFAULT(PATHNAME) mkdir(PATHNAME, 0755)
 416 #endif
 417
 418 /**
 419  * Create directory, creating all intermediate paths if necessary.
 420  *
 421  * Returns 0 if OK or -1 on failure (and sets errno)
 422  *
 423  * Note: The path may be modified.
 424  */
 425 static int mkdir_all(char *path)
 426 {
 427     int ok = 1;
 428
 429     /* First time just try to make the dir */
 430     goto first;
 431
 432     while (ok--) {
 433         /* Must have failed the first time, so recursively make the parent and try again */
 434         {
 435             char *slash = strrchr(path, '/');
 436
 437             if (slash && slash != path) {
 438                 *slash = 0;
 439                 if (mkdir_all(path) != 0) {
 440                     return -1;
 441                 }
 442                 *slash = '/';
 443             }
 444         }
 445       first:
 446         if (MKDIR_DEFAULT(path) == 0) {
 447             return 0;
 448         }
 449         if (errno == ENOENT) {
 450             /* Create the parent and try again */
 451             continue;
 452         }
 453         /* Maybe it already exists as a directory */
 454         if (errno == EEXIST) {
 455             struct stat sb;
 456
 457             if (stat(path, &sb) == 0 && S_ISDIR(sb.st_mode)) {
 458                 return 0;
 459             }
 460             /* Restore errno */
 461             errno = EEXIST;
 462         }
 463         /* Failed */
 464         break;
 465     }
 466     return -1;
 467 }
 468
 469 static int file_cmd_mkdir(Jim_Interp *interp, int argc, Jim_Obj *const *argv)
 470 {
 471     while (argc--) {
 472         char *path = Jim_StrDup(Jim_String(argv[0]));
 473         int rc = mkdir_all(path);
 474
 475         Jim_Free(path);
 476         if (rc != 0) {
 477             Jim_SetResultFormatted(interp, "can't create directory \"%#s\": %s", argv[0],
 478                 strerror(errno));
 479             return JIM_ERR;
 480         }
 481         argv++;
 482     }
 483     return JIM_OK;
 484 }
 485
 486 #ifdef HAVE_MKSTEMP
 487 static int file_cmd_tempfile(Jim_Interp *interp, int argc, Jim_Obj *const *argv)
 488 {
 489     int fd;
 490     char *filename;
 491     const char *template = "/tmp/tcl.tmp.XXXXXX";
 492     mode_t mask = umask(S_IXUSR | S_IRWXG | S_IRWXO);
 493
 494     if (argc >= 1) {
 495         template = Jim_String(argv[0]);
 496     }
 497     filename = Jim_StrDup(template);
 498
 499     fd = mkstemp(filename);
 500     umask(mask);
 501     if (fd < 0) {
 502         Jim_SetResultString(interp, "Failed to create tempfile", -1);
 503         Jim_Free(filename);
 504         return JIM_ERR;
 505     }
 506     close(fd);
 507
 508     Jim_SetResult(interp, Jim_NewStringObjNoAlloc(interp, filename, -1));
 509     return JIM_OK;
 510 }
 511 #endif
 512
 513 static int file_cmd_rename(Jim_Interp *interp, int argc, Jim_Obj *const *argv)
 514 {
 515     const char *source;
 516     const char *dest;
 517     int force = 0;
 518
 519     if (argc == 3) {
 520         if (!Jim_CompareStringImmediate(interp, argv[0], "-force")) {
 521             return -1;
 522         }
 523         force++;
 524         argv++;
 525         argc--;
 526     }
 527
 528     source = Jim_String(argv[0]);
 529     dest = Jim_String(argv[1]);
 530
 531     if (!force && access(dest, F_OK) == 0) {
 532         Jim_SetResultFormatted(interp, "error renaming \"%#s\" to \"%#s\": target exists", argv[0],
 533             argv[1]);
 534         return JIM_ERR;
 535     }
 536
 537     if (rename(source, dest) != 0) {
 538         Jim_SetResultFormatted(interp, "error renaming \"%#s\" to \"%#s\": %s", argv[0], argv[1],
 539             strerror(errno));
 540         return JIM_ERR;
 541     }
 542
 543     return JIM_OK;
 544 }
 545
 546 static int file_stat(Jim_Interp *interp, Jim_Obj *filename, struct stat *sb)
 547 {
 548     const char *path = Jim_String(filename);
 549
 550     if (stat(path, sb) == -1) {
 551         Jim_SetResultFormatted(interp, "could not read \"%#s\": %s", filename, strerror(errno));
 552         return JIM_ERR;
 553     }
 554     return JIM_OK;
 555 }
 556
 557 #ifdef HAVE_LSTAT
 558 static int file_lstat(Jim_Interp *interp, Jim_Obj *filename, struct stat *sb)
 559 {
 560     const char *path = Jim_String(filename);
 561
 562     if (lstat(path, sb) == -1) {
 563         Jim_SetResultFormatted(interp, "could not read \"%#s\": %s", filename, strerror(errno));
 564         return JIM_ERR;
 565     }
 566     return JIM_OK;
 567 }
 568 #else
 569 #define file_lstat file_stat
 570 #endif
 571
 572 static int file_cmd_atime(Jim_Interp *interp, int argc, Jim_Obj *const *argv)
 573 {
 574     struct stat sb;
 575
 576     if (file_stat(interp, argv[0], &sb) != JIM_OK) {
 577         return JIM_ERR;
 578     }
 579     Jim_SetResultInt(interp, sb.st_atime);
 580     return JIM_OK;
 581 }
 582
 583 static int file_cmd_mtime(Jim_Interp *interp, int argc, Jim_Obj *const *argv)
 584 {
 585     struct stat sb;
 586
 587     if (argc == 2) {
 588 #ifdef HAVE_UTIMES
 589         jim_wide newtime;
 590         struct timeval times[2];
 591
 592         if (Jim_GetWide(interp, argv[1], &newtime) != JIM_OK) {
 593             return JIM_ERR;
 594         }
 595
 596         times[1].tv_sec = times[0].tv_sec = newtime;
 597         times[1].tv_usec = times[0].tv_usec = 0;
 598
 599         if (utimes(Jim_String(argv[0]), times) != 0) {
 600             Jim_SetResultFormatted(interp, "can't set time on \"%#s\": %s", argv[0], strerror(errno));
 601             return JIM_ERR;
 602         }
 603 #else
 604         Jim_SetResultString(interp, "Not implemented", -1);
 605         return JIM_ERR;
 606 #endif
 607     }
 608     if (file_stat(interp, argv[0], &sb) != JIM_OK) {
 609         return JIM_ERR;
 610     }
 611     Jim_SetResultInt(interp, sb.st_mtime);
 612     return JIM_OK;
 613 }
 614
 615 static int file_cmd_copy(Jim_Interp *interp, int argc, Jim_Obj *const *argv)
 616 {
 617     return Jim_EvalPrefix(interp, "file copy", argc, argv);
 618 }
 619
 620 static int file_cmd_size(Jim_Interp *interp, int argc, Jim_Obj *const *argv)
 621 {
 622     struct stat sb;
 623
 624     if (file_stat(interp, argv[0], &sb) != JIM_OK) {
 625         return JIM_ERR;
 626     }
 627     Jim_SetResultInt(interp, sb.st_size);
 628     return JIM_OK;
 629 }
 630
 631 static int file_cmd_isdirectory(Jim_Interp *interp, int argc, Jim_Obj *const *argv)
 632 {
 633     struct stat sb;
 634     int ret = 0;
 635
 636     if (file_stat(interp, argv[0], &sb) == JIM_OK) {
 637         ret = S_ISDIR(sb.st_mode);
 638     }
 639     Jim_SetResultInt(interp, ret);
 640     return JIM_OK;
 641 }
 642
 643 static int file_cmd_isfile(Jim_Interp *interp, int argc, Jim_Obj *const *argv)
 644 {
 645     struct stat sb;
 646     int ret = 0;
 647
 648     if (file_stat(interp, argv[0], &sb) == JIM_OK) {
 649         ret = S_ISREG(sb.st_mode);
 650     }
 651     Jim_SetResultInt(interp, ret);
 652     return JIM_OK;
 653 }
 654
 655 #ifdef HAVE_GETEUID
 656 static int file_cmd_owned(Jim_Interp *interp, int argc, Jim_Obj *const *argv)
 657 {
 658     struct stat sb;
 659     int ret = 0;
 660
 661     if (file_stat(interp, argv[0], &sb) == JIM_OK) {
 662         ret = (geteuid() == sb.st_uid);
 663     }
 664     Jim_SetResultInt(interp, ret);
 665     return JIM_OK;
 666 }
 667 #endif
 668
 669 #if defined(HAVE_READLINK)
 670 static int file_cmd_readlink(Jim_Interp *interp, int argc, Jim_Obj *const *argv)
 671 {
 672     const char *path = Jim_String(argv[0]);
 673     char *linkValue = Jim_Alloc(MAXPATHLEN + 1);
 674
 675     int linkLength = readlink(path, linkValue, MAXPATHLEN);
 676
 677     if (linkLength == -1) {
 678         Jim_Free(linkValue);
 679         Jim_SetResultFormatted(interp, "couldn't readlink \"%#s\": %s", argv[0], strerror(errno));
 680         return JIM_ERR;
 681     }
 682     linkValue[linkLength] = 0;
 683     Jim_SetResult(interp, Jim_NewStringObjNoAlloc(interp, linkValue, linkLength));
 684     return JIM_OK;
 685 }
 686 #endif
 687
 688 static int file_cmd_type(Jim_Interp *interp, int argc, Jim_Obj *const *argv)
 689 {
 690     struct stat sb;
 691
 692     if (file_lstat(interp, argv[0], &sb) != JIM_OK) {
 693         return JIM_ERR;
 694     }
 695     Jim_SetResultString(interp, JimGetFileType((int)sb.st_mode), -1);
 696     return JIM_OK;
 697 }
 698
 699 #ifdef HAVE_LSTAT
 700 static int file_cmd_lstat(Jim_Interp *interp, int argc, Jim_Obj *const *argv)
 701 {
 702     struct stat sb;
 703
 704     if (file_lstat(interp, argv[0], &sb) != JIM_OK) {
 705         return JIM_ERR;
 706     }
 707     return StoreStatData(interp, argc == 2 ? argv[1] : NULL, &sb);
 708 }
 709 #else
 710 #define file_cmd_lstat file_cmd_stat
 711 #endif
 712
 713 static int file_cmd_stat(Jim_Interp *interp, int argc, Jim_Obj *const *argv)
 714 {
 715     struct stat sb;
 716
 717     if (file_stat(interp, argv[0], &sb) != JIM_OK) {
 718         return JIM_ERR;
 719     }
 720     return StoreStatData(interp, argc == 2 ? argv[1] : NULL, &sb);
 721 }
 722
 723 static const jim_subcmd_type file_command_table[] = {
 724     {   "atime",
 725         "name",
 726         file_cmd_atime,
 727         1,
 728         1,
 729         /* Description: Last access time */
 730     },
 731     {   "mtime",
 732         "name ?time?",
 733         file_cmd_mtime,
 734         1,
 735         2,
 736         /* Description: Get or set last modification time */
 737     },
 738     {   "copy",
 739         "?-force? source dest",
 740         file_cmd_copy,
 741         2,
 742         3,
 743         /* Description: Copy source file to destination file */
 744     },
 745     {   "dirname",
 746         "name",
 747         file_cmd_dirname,
 748         1,
 749         1,
 750         /* Description: Directory part of the name */
 751     },
 752     {   "rootname",
 753         "name",
 754         file_cmd_rootname,
 755         1,
 756         1,
 757         /* Description: Name without any extension */
 758     },
 759     {   "extension",
 760         "name",
 761         file_cmd_extension,
 762         1,
 763         1,
 764         /* Description: Last extension including the dot */
 765     },
 766     {   "tail",
 767         "name",
 768         file_cmd_tail,
 769         1,
 770         1,
 771         /* Description: Last component of the name */
 772     },
 773     {   "normalize",
 774         "name",
 775         file_cmd_normalize,
 776         1,
 777         1,
 778         /* Description: Normalized path of name */
 779     },
 780     {   "join",
 781         "name ?name ...?",
 782         file_cmd_join,
 783         1,
 784         -1,
 785         /* Description: Join multiple path components */
 786     },
 787     {   "readable",
 788         "name",
 789         file_cmd_readable,
 790         1,
 791         1,
 792         /* Description: Is file readable */
 793     },
 794     {   "writable",
 795         "name",
 796         file_cmd_writable,
 797         1,
 798         1,
 799         /* Description: Is file writable */
 800     },
 801     {   "executable",
 802         "name",
 803         file_cmd_executable,
 804         1,
 805         1,
 806         /* Description: Is file executable */
 807     },
 808     {   "exists",
 809         "name",
 810         file_cmd_exists,
 811         1,
 812         1,
 813         /* Description: Does file exist */
 814     },
 815     {   "delete",
 816         "?-force|--? name ...",
 817         file_cmd_delete,
 818         1,
 819         -1,
 820         /* Description: Deletes the files or directories (must be empty unless -force) */
 821     },
 822     {   "mkdir",
 823         "dir ...",
 824         file_cmd_mkdir,
 825         1,
 826         -1,
 827         /* Description: Creates the directories */
 828     },
 829 #ifdef HAVE_MKSTEMP
 830     {   "tempfile",
 831         "?template?",
 832         file_cmd_tempfile,
 833         0,
 834         1,
 835         /* Description: Creates a temporary filename */
 836     },
 837 #endif
 838     {   "rename",
 839         "?-force? source dest",
 840         file_cmd_rename,
 841         2,
 842         3,
 843         /* Description: Renames a file */
 844     },
 845 #if defined(HAVE_READLINK)
 846     {   "readlink",
 847         "name",
 848         file_cmd_readlink,
 849         1,
 850         1,
 851         /* Description: Value of the symbolic link */
 852     },
 853 #endif
 854     {   "size",
 855         "name",
 856         file_cmd_size,
 857         1,
 858         1,
 859         /* Description: Size of file */
 860     },
 861     {   "stat",
 862         "name ?var?",
 863         file_cmd_stat,
 864         1,
 865         2,
 866         /* Description: Returns results of stat, and may store in var array */
 867     },
 868     {   "lstat",
 869         "name ?var?",
 870         file_cmd_lstat,
 871         1,
 872         2,
 873         /* Description: Returns results of lstat, and may store in var array */
 874     },
 875     {   "type",
 876         "name",
 877         file_cmd_type,
 878         1,
 879         1,
 880         /* Description: Returns type of the file */
 881     },
 882 #ifdef HAVE_GETEUID
 883     {   "owned",
 884         "name",
 885         file_cmd_owned,
 886         1,
 887         1,
 888         /* Description: Returns 1 if owned by the current owner */
 889     },
 890 #endif
 891     {   "isdirectory",
 892         "name",
 893         file_cmd_isdirectory,
 894         1,
 895         1,
 896         /* Description: Returns 1 if name is a directory */
 897     },
 898     {   "isfile",
 899         "name",
 900         file_cmd_isfile,
 901         1,
 902         1,
 903         /* Description: Returns 1 if name is a file */
 904     },
 905     {
 906         NULL
 907     }
 908 };
 909
 910 static int Jim_CdCmd(Jim_Interp *interp, int argc, Jim_Obj *const *argv)
 911 {
 912     const char *path;
 913
 914     if (argc != 2) {
 915         Jim_WrongNumArgs(interp, 1, argv, "dirname");
 916         return JIM_ERR;
 917     }
 918
 919     path = Jim_String(argv[1]);
 920
 921     if (chdir(path) != 0) {
 922         Jim_SetResultFormatted(interp, "couldn't change working directory to \"%s\": %s", path,
 923             strerror(errno));
 924         return JIM_ERR;
 925     }
 926     return JIM_OK;
 927 }
 928
 929 static int Jim_PwdCmd(Jim_Interp *interp, int argc, Jim_Obj *const *argv)
 930 {
 931     char *cwd = Jim_Alloc(MAXPATHLEN);
 932
 933     if (getcwd(cwd, MAXPATHLEN) == NULL) {
 934         Jim_SetResultString(interp, "Failed to get pwd", -1);
 935         Jim_Free(cwd);
 936         return JIM_ERR;
 937     }
 938 #if defined(__MINGW32__) || defined(_MSC_VER)
 939     {
 940         /* Try to keep backlashes out of paths */
 941         char *p = cwd;
 942         while ((p = strchr(p, '\\')) != NULL) {
 943             *p++ = '/';
 944         }
 945     }
 946 #endif
 947
 948     Jim_SetResultString(interp, cwd, -1);
 949
 950     Jim_Free(cwd);
 951     return JIM_OK;
 952 }
 953
 954 int Jim_fileInit(Jim_Interp *interp)
 955 {
 956     if (Jim_PackageProvide(interp, "file", "1.0", JIM_ERRMSG))
 957         return JIM_ERR;
 958
 959     Jim_CreateCommand(interp, "file", Jim_SubCmdProc, (void *)file_command_table, NULL);
 960     Jim_CreateCommand(interp, "pwd", Jim_PwdCmd, NULL, NULL);
 961     Jim_CreateCommand(interp, "cd", Jim_CdCmd, NULL, NULL);
 962     return JIM_OK;
 963 }