lib/vfs/path.c

   1 /*
   2    Virtual File System path handlers
   3
   4    Copyright (C) 2011
   5    The Free Software Foundation, Inc.
   6
   7    Written by:
   8    Slava Zanko <slavazanko@gmail.com>, 2011
   9
  10    This file is part of the Midnight Commander.
  11
  12    The Midnight Commander is free software: you can redistribute it
  13    and/or modify it under the terms of the GNU General Public License as
  14    published by the Free Software Foundation, either version 3 of the License,
  15    or (at your option) any later version.
  16
  17    The Midnight Commander is distributed in the hope that it will be useful,
  18    but WITHOUT ANY WARRANTY; without even the implied warranty of
  19    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  20    GNU General Public License for more details.
  21
  22    You should have received a copy of the GNU General Public License
  23    along with this program.  If not, see <http://www.gnu.org/licenses/>.
  24  */
  25
  26 /**
  27  * \file
  28  * \brief Source: Virtual File System: path handlers
  29  * \author Slava Zanko
  30  * \date 2011
  31  */
  32
  33
  34 #include <config.h>
  35
  36 #include "lib/global.h"
  37 #include "lib/strutil.h"
  38 #include "lib/util.h"           /* mc_build_filename() */
  39 #include "lib/serialize.h"
  40
  41 #include "vfs.h"
  42 #include "utilvfs.h"
  43 #include "xdirentry.h"
  44 #include "path.h"
  45
  46 extern GPtrArray *vfs__classes_list;
  47
  48 /*** global variables ****************************************************************************/
  49
  50 /*** file scope macro definitions ****************************************************************/
  51
  52 /*** file scope type declarations ****************************************************************/
  53
  54 /*** file scope variables ************************************************************************/
  55
  56 /*** file scope functions ************************************************************************/
  57 /* --------------------------------------------------------------------------------------------- */
  58
  59 static gboolean
  60 path_magic (const char *path)
  61 {
  62     struct stat buf;
  63
  64     return (stat (path, &buf) != 0);
  65 }
  66
  67 /* --------------------------------------------------------------------------------------------- */
  68
  69 /**
  70  * Splits path extracting vfs part.
  71  *
  72  * Splits path
  73  * \verbatim /p1#op/inpath \endverbatim
  74  * into
  75  * \verbatim inpath,op; \endverbatim
  76  * returns which vfs it is.
  77  * What is left in path is p1. You still want to g_free(path), you DON'T
  78  * want to free neither *inpath nor *op
  79  */
  80
  81 static struct vfs_class *
  82 _vfs_split_with_semi_skip_count (char *path, const char **inpath, const char **op,
  83                                  size_t skip_count)
  84 {
  85     char *semi;
  86     char *slash;
  87     struct vfs_class *ret;
  88
  89     if (path == NULL)
  90         vfs_die ("Cannot split NULL");
  91
  92     semi = strrstr_skip_count (path, "#", skip_count);
  93
  94     if ((semi == NULL) || (!path_magic (path)))
  95         return NULL;
  96
  97     slash = strchr (semi, PATH_SEP);
  98     *semi = '\0';
  99
 100     if (op != NULL)
 101         *op = NULL;
 102
 103     if (inpath != NULL)
 104         *inpath = NULL;
 105
 106     if (slash != NULL)
 107         *slash = '\0';
 108
 109     ret = vfs_prefix_to_class (semi + 1);
 110     if (ret != NULL)
 111     {
 112         if (op != NULL)
 113             *op = semi + 1;
 114         if (inpath != NULL)
 115             *inpath = slash != NULL ? slash + 1 : NULL;
 116         return ret;
 117     }
 118
 119     if (slash != NULL)
 120         *slash = PATH_SEP;
 121
 122     *semi = '#';
 123     ret = _vfs_split_with_semi_skip_count (path, inpath, op, skip_count + 1);
 124     return ret;
 125 }
 126
 127 /* --------------------------------------------------------------------------------------------- */
 128 /**
 129  * remove //, /./ and /../
 130  *
 131  * @return newly allocated string
 132  */
 133
 134 static char *
 135 vfs_canon (const char *path)
 136 {
 137     if (path == NULL)
 138         vfs_die ("Cannot canonicalize NULL");
 139
 140     /* Relative to current directory */
 141     if (*path != PATH_SEP)
 142     {
 143         char *result, *local;
 144
 145         local = tilde_expand (path);
 146         if (*local != PATH_SEP)
 147         {
 148             char *curr_dir;
 149
 150             g_free (local);
 151             curr_dir = vfs_get_current_dir ();
 152             local = mc_build_filename (curr_dir, path, NULL);
 153             g_free (curr_dir);
 154         }
 155
 156         result = vfs_canon (local);
 157         g_free (local);
 158         return result;
 159     }
 160
 161     /*
 162      * So we have path of following form:
 163      * /p1/p2#op/.././././p3#op/p4. Good luck.
 164      */
 165     {
 166         char *result;
 167
 168         result = g_strdup (path);
 169         canonicalize_pathname (result);
 170         return result;
 171     }
 172 }
 173
 174 /* --------------------------------------------------------------------------------------------- */
 175 /** get encoding after last #enc: or NULL, if part does not contain #enc:
 176  *
 177  * @param path string
 178  *
 179  * @return newly allocated string.
 180  */
 181
 182 static char *
 183 vfs_get_encoding (const char *path)
 184 {
 185     char result[16];
 186     char *work;
 187     char *semi;
 188     char *slash;
 189     work = g_strdup (path);
 190
 191     /* try found #enc: */
 192     semi = g_strrstr (work, VFS_ENCODING_PREFIX);
 193
 194     if (semi != NULL && (semi == work || *(semi - 1) == PATH_SEP))
 195     {
 196         semi += strlen (VFS_ENCODING_PREFIX);   /* skip "#enc:" */
 197         slash = strchr (semi, PATH_SEP);
 198         if (slash != NULL)
 199             slash[0] = '\0';
 200
 201         g_strlcpy (result, semi, sizeof (result));
 202         g_free (work);
 203         return g_strdup (result);
 204     }
 205     else
 206     {
 207         g_free (work);
 208         return NULL;
 209     }
 210 }
 211
 212 /* --------------------------------------------------------------------------------------------- */
 213 /**  Extract the hostname and username from the path
 214  *
 215  * Format of the path is [user@]hostname:port/remote-dir, e.g.:
 216  *
 217  * ftp://sunsite.unc.edu/pub/linux
 218  * ftp://miguel@sphinx.nuclecu.unam.mx/c/nc
 219  * ftp://tsx-11.mit.edu:8192/
 220  * ftp://joe@foo.edu:11321/private
 221  * ftp://joe:password@foo.se
 222  *
 223  * @param path_element is an input string to be parsed
 224  * @param path is an input string to be parsed
 225  *
 226  * @return g_malloc()ed url info.
 227  *         If the user is empty, e.g. ftp://@roxanne/private, and URL_USE_ANONYMOUS
 228  *         is not set, then the current login name is supplied.
 229  *         Return value is a g_malloc()ed structure with the pathname relative to the
 230  *         host.
 231  */
 232
 233 static void
 234 vfs_path_url_split (vfs_path_element_t * path_element, const char *path)
 235 {
 236     char *pcopy;
 237     const char *pend;
 238     char *dir, *colon, *inner_colon, *at, *rest;
 239
 240     path_element->port = 0;
 241
 242     pcopy = g_strdup (path);
 243     pend = pcopy + strlen (pcopy);
 244     dir = pcopy;
 245
 246     /* search for any possible user */
 247     at = strrchr (pcopy, '@');
 248
 249     /* We have a username */
 250     if (at == NULL)
 251         rest = pcopy;
 252     else
 253     {
 254         *at = '\0';
 255         inner_colon = strchr (pcopy, ':');
 256         if (inner_colon != NULL)
 257         {
 258             *inner_colon = '\0';
 259             inner_colon++;
 260             path_element->password = g_strdup (inner_colon);
 261         }
 262
 263         if (*pcopy != '\0')
 264             path_element->user = g_strdup (pcopy);
 265
 266         if (pend == at + 1)
 267             rest = at;
 268         else
 269             rest = at + 1;
 270     }
 271
 272     /* Check if the host comes with a port spec, if so, chop it */
 273     if (*rest != '[')
 274         colon = strchr (rest, ':');
 275     else
 276     {
 277         colon = strchr (++rest, ']');
 278         if (colon != NULL)
 279         {
 280             colon[0] = '\0';
 281             colon[1] = '\0';
 282             colon++;
 283             path_element->ipv6 = TRUE;
 284         }
 285     }
 286
 287     if (colon != NULL)
 288     {
 289         *colon = '\0';
 290         if (sscanf (colon + 1, "%d", &path_element->port) == 1)
 291         {
 292             if (path_element->port <= 0 || path_element->port >= 65536)
 293                 path_element->port = 0;
 294         }
 295         else
 296             while (*(++colon) != '\0')
 297             {
 298                 switch (*colon)
 299                 {
 300                 case 'C':
 301                     path_element->port = 1;
 302                     break;
 303                 case 'r':
 304                     path_element->port = 2;
 305                     break;
 306                 }
 307             }
 308     }
 309     path_element->host = g_strdup (rest);
 310     g_free (pcopy);
 311 }
 312
 313 /* --------------------------------------------------------------------------------------------- */
 314 /**
 315  * get VFS class for the given name
 316  *
 317  * @param class_name name of class
 318  *
 319  * @return pointer to class structure or NULL if class not found
 320  */
 321
 322 static struct vfs_class *
 323 vfs_get_class_by_name (const char *class_name)
 324 {
 325     guint i;
 326
 327     if (class_name == NULL)
 328         return NULL;
 329
 330     for (i = 0; i < vfs__classes_list->len; i++)
 331     {
 332         struct vfs_class *vfs = (struct vfs_class *) g_ptr_array_index (vfs__classes_list, i);
 333         if ((vfs->name != NULL) && (strcmp (vfs->name, class_name) == 0))
 334             return vfs;
 335     }
 336
 337     return NULL;
 338 }
 339
 340 /* --------------------------------------------------------------------------------------------- */
 341 /**
 342  * Check if path string contain URL-like elements
 343  *
 344  * @param path_str path
 345  *
 346  * @return TRUE if path is deprecated or FALSE otherwise
 347  */
 348
 349 static gboolean
 350 vfs_path_is_str_path_deprecated (const char *path_str)
 351 {
 352     return strstr (path_str, VFS_PATH_URL_DELIMITER) == NULL;
 353 }
 354
 355 /* --------------------------------------------------------------------------------------------- */
 356 /** Split path string to path elements by deprecated algorithm.
 357  *
 358  * @param path_str VFS-path
 359  *
 360  * @return pointer to newly created vfs_path_t object with filled path elements array.
 361 */
 362
 363 static vfs_path_t *
 364 vfs_path_from_str_deprecated_parser (char *path, vfs_path_flag_t flags)
 365 {
 366     vfs_path_t *vpath;
 367     vfs_path_element_t *element;
 368     struct vfs_class *class;
 369     const char *local, *op;
 370
 371     (void) flags;
 372     vpath = vfs_path_new ();
 373
 374     while ((class = _vfs_split_with_semi_skip_count (path, &local, &op, 0)) != NULL)
 375     {
 376         char *url_params;
 377         element = g_new0 (vfs_path_element_t, 1);
 378         element->class = class;
 379         if (local == NULL)
 380             local = "";
 381         element->path = vfs_translate_path_n (local);
 382
 383         element->encoding = vfs_get_encoding (local);
 384         element->dir.converter =
 385             (element->encoding != NULL) ? str_crt_conv_from (element->encoding) : INVALID_CONV;
 386
 387         url_params = strchr (op, ':');  /* skip VFS prefix */
 388         if (url_params != NULL)
 389         {
 390             *url_params = '\0';
 391             url_params++;
 392             vfs_path_url_split (element, url_params);
 393         }
 394
 395         if (*op != '\0')
 396             element->vfs_prefix = g_strdup (op);
 397
 398         g_array_prepend_val (vpath->path, element);
 399     }
 400     if (path[0] != '\0')
 401     {
 402         element = g_new0 (vfs_path_element_t, 1);
 403         element->class = g_ptr_array_index (vfs__classes_list, 0);
 404         element->path = vfs_translate_path_n (path);
 405
 406         element->encoding = vfs_get_encoding (path);
 407         element->dir.converter =
 408             (element->encoding != NULL) ? str_crt_conv_from (element->encoding) : INVALID_CONV;
 409         g_array_prepend_val (vpath->path, element);
 410     }
 411
 412     return vpath;
 413 }
 414
 415 /* --------------------------------------------------------------------------------------------- */
 416 /** Split path string to path elements by URL algorithm.
 417  *
 418  * @param path_str VFS-path
 419  *
 420  * @return pointer to newly created vfs_path_t object with filled path elements array.
 421 */
 422
 423 static vfs_path_t *
 424 vfs_path_from_str_uri_parser (char *path, vfs_path_flag_t flags)
 425 {
 426     vfs_path_t *vpath;
 427     vfs_path_element_t *element;
 428
 429     char *url_delimiter;
 430
 431     vpath = vfs_path_new ();
 432     vpath->relative = (flags & VPF_NO_CANON) != 0;
 433
 434     while ((url_delimiter = g_strrstr (path, VFS_PATH_URL_DELIMITER)) != NULL)
 435     {
 436         char *vfs_prefix_start;
 437         char *real_vfs_prefix_start = url_delimiter;
 438         char *slash_pointer;
 439         struct vfs_s_subclass *sub = NULL;
 440
 441         while (real_vfs_prefix_start > path && *(real_vfs_prefix_start) != PATH_SEP)
 442             real_vfs_prefix_start--;
 443         vfs_prefix_start = real_vfs_prefix_start;
 444
 445         if (*(vfs_prefix_start) == PATH_SEP)
 446             vfs_prefix_start += 1;
 447
 448         *url_delimiter = '\0';
 449
 450         element = g_new0 (vfs_path_element_t, 1);
 451         element->class = vfs_prefix_to_class (vfs_prefix_start);
 452         element->vfs_prefix = g_strdup (vfs_prefix_start);
 453
 454         url_delimiter += strlen (VFS_PATH_URL_DELIMITER);
 455         sub = VFSDATA (element);
 456         if (sub != NULL && (sub->flags & VFS_S_REMOTE) != 0)
 457         {
 458             slash_pointer = strchr (url_delimiter, PATH_SEP);
 459             if (slash_pointer == NULL)
 460             {
 461                 element->path = g_strdup ("");
 462             }
 463             else
 464             {
 465                 element->path = vfs_translate_path_n (slash_pointer + 1);
 466                 element->encoding = vfs_get_encoding (slash_pointer);
 467
 468                 *slash_pointer = '\0';
 469             }
 470             vfs_path_url_split (element, url_delimiter);
 471         }
 472         else
 473         {
 474             element->path = vfs_translate_path_n (url_delimiter);
 475             element->encoding = vfs_get_encoding (url_delimiter);
 476         }
 477         element->dir.converter =
 478             (element->encoding != NULL) ? str_crt_conv_from (element->encoding) : INVALID_CONV;
 479         g_array_prepend_val (vpath->path, element);
 480
 481         if ((real_vfs_prefix_start > path && *(real_vfs_prefix_start) == PATH_SEP) ||
 482             (real_vfs_prefix_start == path && *(real_vfs_prefix_start) != PATH_SEP))
 483             *real_vfs_prefix_start = '\0';
 484         else
 485             *(real_vfs_prefix_start + 1) = '\0';
 486     }
 487
 488     if (path[0] != '\0')
 489     {
 490         element = g_new0 (vfs_path_element_t, 1);
 491         element->class = g_ptr_array_index (vfs__classes_list, 0);
 492         element->path = vfs_translate_path_n (path);
 493         element->encoding = vfs_get_encoding (path);
 494         element->dir.converter =
 495             (element->encoding != NULL) ? str_crt_conv_from (element->encoding) : INVALID_CONV;
 496         g_array_prepend_val (vpath->path, element);
 497     }
 498
 499     return vpath;
 500 }
 501
 502 /* --------------------------------------------------------------------------------------------- */
 503 /**
 504  * Add element's class info to result string (such as VFS name, host, encoding etc)
 505  * This function used as helper only in vfs_path_tokens_get() function
 506  *
 507  * @param element current path element
 508  * @param ret_tokens total tikens for return
 509  * @param element_tokens accumulated element-only tokens
 510  */
 511
 512 static void
 513 vfs_path_tokens_add_class_info (const vfs_path_element_t * element, GString * ret_tokens,
 514                                 GString * element_tokens)
 515 {
 516     if (((element->class->flags & VFSF_LOCAL) == 0 || ret_tokens->len > 0)
 517         && element_tokens->len > 0)
 518     {
 519         char *url_str;
 520
 521         if (ret_tokens->len > 0 && ret_tokens->str[ret_tokens->len - 1] != PATH_SEP)
 522             g_string_append_c (ret_tokens, PATH_SEP);
 523
 524         g_string_append (ret_tokens, element->vfs_prefix);
 525         g_string_append (ret_tokens, VFS_PATH_URL_DELIMITER);
 526
 527         url_str = vfs_path_build_url_params_str (element, TRUE);
 528         if (*url_str != '\0')
 529         {
 530             g_string_append (ret_tokens, url_str);
 531             g_string_append_c (ret_tokens, PATH_SEP);
 532         }
 533
 534         g_free (url_str);
 535     }
 536     if (element->encoding != NULL)
 537     {
 538         if (ret_tokens->len > 0 && ret_tokens->str[ret_tokens->len - 1] != PATH_SEP)
 539             g_string_append (ret_tokens, PATH_SEP_STR);
 540         g_string_append (ret_tokens, VFS_ENCODING_PREFIX);
 541         g_string_append (ret_tokens, element->encoding);
 542         g_string_append (ret_tokens, PATH_SEP_STR);
 543     }
 544
 545     g_string_append (ret_tokens, element_tokens->str);
 546 }
 547
 548 /* --------------------------------------------------------------------------------------------- */
 549 /**
 550  * Strip path to home dir.
 551  * @param dir pointer to string contains full path
 552  */
 553
 554 static char *
 555 vfs_path_strip_home (const char *dir)
 556 {
 557     const char *home_dir = mc_config_get_home_dir ();
 558
 559     if (home_dir != NULL)
 560     {
 561         size_t len;
 562
 563         len = strlen (home_dir);
 564
 565         if (strncmp (dir, home_dir, len) == 0 && (dir[len] == PATH_SEP || dir[len] == '\0'))
 566             return g_strdup_printf ("~%s", dir + len);
 567     }
 568
 569     return g_strdup (dir);
 570 }
 571
 572 /* --------------------------------------------------------------------------------------------- */
 573
 574 /* --------------------------------------------------------------------------------------------- */
 575 /*** public functions ****************************************************************************/
 576 /* --------------------------------------------------------------------------------------------- */
 577 /**
 578  * Convert first elements_count elements from vfs_path_t to string representation with flags.
 579  *
 580  * @param vpath pointer to vfs_path_t object
 581  * @param elements_count count of first elements for convert
 582  * @param flags flags for converter
 583  *
 584  * @return pointer to newly created string.
 585  */
 586
 587 #define vfs_append_from_path(appendfrom, is_relative) \
 588 { \
 589     if ((flags & VPF_STRIP_HOME) && element_index == 0 && (element->class->flags & VFSF_LOCAL) != 0) \
 590     { \
 591         char *stripped_home_str; \
 592         stripped_home_str = vfs_path_strip_home (appendfrom); \
 593         g_string_append (buffer, stripped_home_str); \
 594         g_free (stripped_home_str); \
 595     } \
 596     else \
 597     { \
 598         if ((!is_relative) && (*appendfrom != PATH_SEP) && (*appendfrom != '\0') \
 599             && (buffer->len == 0 || buffer->str[buffer->len - 1] != PATH_SEP)) \
 600             g_string_append_c (buffer, PATH_SEP); \
 601         g_string_append (buffer, appendfrom); \
 602     } \
 603 }
 604
 605 char *
 606 vfs_path_to_str_flags (const vfs_path_t * vpath, int elements_count, vfs_path_flag_t flags)
 607 {
 608     int element_index;
 609     GString *buffer;
 610     GString *recode_buffer;
 611
 612     if (vpath == NULL)
 613         return NULL;
 614
 615     if (elements_count == 0 || elements_count > vfs_path_elements_count (vpath))
 616         elements_count = vfs_path_elements_count (vpath);
 617
 618     if (elements_count < 0)
 619         elements_count = vfs_path_elements_count (vpath) + elements_count;
 620
 621     buffer = g_string_new ("");
 622     recode_buffer = g_string_new ("");
 623
 624     for (element_index = 0; element_index < elements_count; element_index++)
 625     {
 626         const vfs_path_element_t *element;
 627         gboolean is_relative = vpath->relative && (element_index == 0);
 628
 629         element = vfs_path_get_by_index (vpath, element_index);
 630         if (element->vfs_prefix != NULL)
 631         {
 632             char *url_str;
 633             if ((!is_relative) && (buffer->len == 0 || buffer->str[buffer->len - 1] != PATH_SEP))
 634                 g_string_append_c (buffer, PATH_SEP);
 635
 636             g_string_append (buffer, element->vfs_prefix);
 637             g_string_append (buffer, VFS_PATH_URL_DELIMITER);
 638
 639             url_str = vfs_path_build_url_params_str (element, !(flags & VPF_STRIP_PASSWORD));
 640
 641             if (*url_str != '\0')
 642                 g_string_append (buffer, url_str);
 643
 644             g_free (url_str);
 645         }
 646
 647         if ((flags & VPF_RECODE) == 0 && vfs_path_element_need_cleanup_converter (element))
 648         {
 649             if ((flags & VPF_HIDE_CHARSET) == 0)
 650             {
 651                 if ((!is_relative)
 652                     && (buffer->len == 0 || buffer->str[buffer->len - 1] != PATH_SEP))
 653                     g_string_append (buffer, PATH_SEP_STR);
 654                 g_string_append (buffer, VFS_ENCODING_PREFIX);
 655                 g_string_append (buffer, element->encoding);
 656             }
 657             str_vfs_convert_from (element->dir.converter, element->path, recode_buffer);
 658             vfs_append_from_path (recode_buffer->str, is_relative);
 659             g_string_set_size (recode_buffer, 0);
 660         }
 661         else
 662         {
 663             vfs_append_from_path (element->path, is_relative);
 664         }
 665     }
 666     g_string_free (recode_buffer, TRUE);
 667     return g_string_free (buffer, FALSE);
 668 }
 669
 670 #undef vfs_append_from_path
 671
 672 /* --------------------------------------------------------------------------------------------- */
 673 /**
 674  * Convert first elements_count elements from vfs_path_t to string representation.
 675  *
 676  * @param vpath pointer to vfs_path_t object
 677  * @param elements_count count of first elements for convert
 678  *
 679  * @return pointer to newly created string.
 680  */
 681
 682 char *
 683 vfs_path_to_str_elements_count (const vfs_path_t * vpath, int elements_count)
 684 {
 685     return vfs_path_to_str_flags (vpath, elements_count, VPF_NONE);
 686 }
 687
 688 /* --------------------------------------------------------------------------------------------- */
 689 /**
 690  * Convert vfs_path_t to string representation.
 691  *
 692  * @param vpath pointer to vfs_path_t object
 693  *
 694  * @return pointer to newly created string.
 695  */
 696
 697 char *
 698 vfs_path_to_str (const vfs_path_t * vpath)
 699 {
 700     return vfs_path_to_str_elements_count (vpath, vfs_path_elements_count (vpath));
 701 }
 702
 703 /* --------------------------------------------------------------------------------------------- */
 704 /**
 705  * Split path string to path elements with flags for change parce process.
 706  *
 707  * @param path_str VFS-path
 708  * @param flags flags for parser
 709  *
 710  * @return pointer to newly created vfs_path_t object with filled path elements array.
 711  */
 712
 713 vfs_path_t *
 714 vfs_path_from_str_flags (const char *path_str, vfs_path_flag_t flags)
 715 {
 716     vfs_path_t *vpath;
 717     char *path;
 718
 719     if (path_str == NULL)
 720         return NULL;
 721
 722     if ((flags & VPF_NO_CANON) == 0)
 723         path = vfs_canon (path_str);
 724     else
 725         path = g_strdup (path_str);
 726
 727     if (path == NULL)
 728         return NULL;
 729
 730     if ((flags & VPF_USE_DEPRECATED_PARSER) != 0 && vfs_path_is_str_path_deprecated (path))
 731         vpath = vfs_path_from_str_deprecated_parser (path, flags);
 732     else
 733         vpath = vfs_path_from_str_uri_parser (path, flags);
 734
 735     g_free (path);
 736
 737     return vpath;
 738 }
 739
 740 /* --------------------------------------------------------------------------------------------- */
 741 /**
 742  * Split path string to path elements.
 743  *
 744  * @param path_str VFS-path
 745  *
 746  * @return pointer to newly created vfs_path_t object with filled path elements array.
 747  */
 748
 749 vfs_path_t *
 750 vfs_path_from_str (const char *path_str)
 751 {
 752     return vfs_path_from_str_flags (path_str, VPF_NONE);
 753 }
 754
 755 /* --------------------------------------------------------------------------------------------- */
 756 /*
 757  * Create new vfs_path_t object.
 758  *
 759  * @return pointer to newly created vfs_path_t object.
 760  */
 761
 762 vfs_path_t *
 763 vfs_path_new (void)
 764 {
 765     vfs_path_t *vpath;
 766
 767     vpath = g_new0 (vfs_path_t, 1);
 768     vpath->path = g_array_new (FALSE, TRUE, sizeof (vfs_path_element_t *));
 769
 770     return vpath;
 771 }
 772
 773 /* --------------------------------------------------------------------------------------------- */
 774 /*
 775  * Get count of path elements.
 776  *
 777  * @param vpath pointer to vfs_path_t object
 778  *
 779  * @return count of path elements.
 780  */
 781
 782 int
 783 vfs_path_elements_count (const vfs_path_t * vpath)
 784 {
 785     return (vpath != NULL && vpath->path != NULL) ? vpath->path->len : 0;
 786 }
 787
 788 /* --------------------------------------------------------------------------------------------- */
 789 /**
 790  * Add vfs_path_element_t object to end of list in vfs_path_t object
 791  * @param vpath pointer to vfs_path_t object
 792  * @param path_element pointer to vfs_path_element_t object
 793  */
 794
 795 void
 796 vfs_path_add_element (const vfs_path_t * vpath, const vfs_path_element_t * path_element)
 797 {
 798     g_array_append_val (vpath->path, path_element);
 799 }
 800
 801 /* --------------------------------------------------------------------------------------------- */
 802 /*
 803  * Get one path element by index.
 804  *
 805  * @param vpath pointer to vfs_path_t object
 806  * @param element_index element index. May have negative value (in this case count was started at the end of list).
 807  *
 808  * @return path element.
 809  */
 810
 811 const vfs_path_element_t *
 812 vfs_path_get_by_index (const vfs_path_t * vpath, int element_index)
 813 {
 814     if (element_index < 0)
 815         element_index += vfs_path_elements_count (vpath);
 816
 817     if (element_index < 0)
 818         vfs_die ("vfs_path_get_by_index: incorrect index!");
 819
 820     return g_array_index (vpath->path, vfs_path_element_t *, element_index);
 821 }
 822
 823 /* --------------------------------------------------------------------------------------------- */
 824 /*
 825  * Clone one path element
 826  *
 827  * @param element pointer to vfs_path_element_t object
 828  *
 829  * @return Newly allocated path element
 830  */
 831
 832 vfs_path_element_t *
 833 vfs_path_element_clone (const vfs_path_element_t * element)
 834 {
 835     vfs_path_element_t *new_element = g_new0 (vfs_path_element_t, 1);
 836     memcpy (new_element, element, sizeof (vfs_path_element_t));
 837
 838     new_element->user = g_strdup (element->user);
 839     new_element->password = g_strdup (element->password);
 840     new_element->host = g_strdup (element->host);
 841     new_element->path = g_strdup (element->path);
 842     new_element->encoding = g_strdup (element->encoding);
 843     if (vfs_path_element_need_cleanup_converter (element) && new_element->encoding != NULL)
 844         new_element->dir.converter = str_crt_conv_from (new_element->encoding);
 845     new_element->vfs_prefix = g_strdup (element->vfs_prefix);
 846
 847     return new_element;
 848 }
 849
 850 /* --------------------------------------------------------------------------------------------- */
 851 /*
 852  * Free one path element.
 853  *
 854  * @param element pointer to vfs_path_element_t object
 855  *
 856  */
 857
 858 void
 859 vfs_path_element_free (vfs_path_element_t * element)
 860 {
 861     if (element == NULL)
 862         return;
 863
 864     g_free (element->user);
 865     g_free (element->password);
 866     g_free (element->host);
 867     g_free (element->path);
 868     g_free (element->encoding);
 869     g_free (element->vfs_prefix);
 870
 871     if (vfs_path_element_need_cleanup_converter (element))
 872     {
 873         str_close_conv (element->dir.converter);
 874     }
 875
 876     g_free (element);
 877 }
 878
 879 /* --------------------------------------------------------------------------------------------- */
 880 /*
 881  * Clone path
 882  *
 883  * @param vpath pointer to vfs_path_t object
 884  *
 885  * @return Newly allocated path object
 886  */
 887
 888 vfs_path_t *
 889 vfs_path_clone (const vfs_path_t * vpath)
 890 {
 891     vfs_path_t *new_vpath;
 892     int vpath_element_index;
 893
 894     if (vpath == NULL)
 895         return NULL;
 896
 897     new_vpath = vfs_path_new ();
 898     new_vpath->relative = vpath->relative;
 899
 900     for (vpath_element_index = 0; vpath_element_index < vfs_path_elements_count (vpath);
 901          vpath_element_index++)
 902     {
 903         vfs_path_element_t *path_element;
 904
 905         path_element = vfs_path_element_clone (vfs_path_get_by_index (vpath, vpath_element_index));
 906         g_array_append_val (new_vpath->path, path_element);
 907     }
 908
 909     return new_vpath;
 910 }
 911
 912 /* --------------------------------------------------------------------------------------------- */
 913 /*
 914  * Free vfs_path_t object.
 915  *
 916  * @param vpath pointer to vfs_path_t object
 917  *
 918  */
 919
 920 void
 921 vfs_path_free (vfs_path_t * vpath)
 922 {
 923     int vpath_element_index;
 924
 925     if (vpath == NULL)
 926         return;
 927
 928     for (vpath_element_index = 0; vpath_element_index < vfs_path_elements_count (vpath);
 929          vpath_element_index++)
 930     {
 931         vfs_path_element_t *path_element;
 932
 933         path_element = (vfs_path_element_t *) vfs_path_get_by_index (vpath, vpath_element_index);
 934         vfs_path_element_free (path_element);
 935     }
 936
 937     g_array_free (vpath->path, TRUE);
 938     g_free (vpath);
 939 }
 940
 941 /* --------------------------------------------------------------------------------------------- */
 942 /*
 943  * Remove one path element by index
 944  *
 945  * @param vpath pointer to vfs_path_t object
 946  * @param element_index element index. May have negative value (in this case count was started at the end of list).
 947  *
 948  */
 949
 950 void
 951 vfs_path_remove_element_by_index (vfs_path_t * vpath, int element_index)
 952 {
 953     vfs_path_element_t *element;
 954
 955     if ((vpath == NULL) || (vfs_path_elements_count (vpath) == 1))
 956         return;
 957
 958     if (element_index < 0)
 959         element_index = vfs_path_elements_count (vpath) + element_index;
 960
 961     element = (vfs_path_element_t *) vfs_path_get_by_index (vpath, element_index);
 962     vpath->path = g_array_remove_index (vpath->path, element_index);
 963     vfs_path_element_free (element);
 964 }
 965
 966 /* --------------------------------------------------------------------------------------------- */
 967 /** Return VFS class for the given prefix */
 968
 969 struct vfs_class *
 970 vfs_prefix_to_class (const char *prefix)
 971 {
 972     guint i;
 973
 974     /* Avoid first class (localfs) that would accept any prefix */
 975     for (i = 1; i < vfs__classes_list->len; i++)
 976     {
 977         struct vfs_class *vfs;
 978
 979         vfs = (struct vfs_class *) g_ptr_array_index (vfs__classes_list, i);
 980         if (vfs->which != NULL)
 981         {
 982             if (vfs->which (vfs, prefix) == -1)
 983                 continue;
 984             return vfs;
 985         }
 986
 987         if (vfs->prefix != NULL && strncmp (prefix, vfs->prefix, strlen (vfs->prefix)) == 0)
 988             return vfs;
 989     }
 990
 991     return NULL;
 992 }
 993
 994 /* --------------------------------------------------------------------------------------------- */
 995 /**
 996  * Check if need cleanup charset converter for vfs_path_element_t
 997  *
 998  * @param element part of path
 999  *
1000  * @return TRUE if need cleanup converter or FALSE otherwise
1001  */
1002
1003 gboolean
1004 vfs_path_element_need_cleanup_converter (const vfs_path_element_t * element)
1005 {
1006     return (element->dir.converter != str_cnv_from_term && element->dir.converter != INVALID_CONV);
1007 }
1008
1009 /* --------------------------------------------------------------------------------------------- */
1010 /**
1011  * Serialize vfs_path_t object to string
1012  *
1013  * @param vpath data for serialization
1014  * @param error contain pointer to object for handle error code and message
1015  *
1016  * @return serialized vpath as newly allocated string
1017  */
1018
1019 char *
1020 vfs_path_serialize (const vfs_path_t * vpath, GError ** error)
1021 {
1022     mc_config_t *cpath = mc_config_init (NULL);
1023     ssize_t element_index;
1024     char *ret_value;
1025
1026     if ((vpath == NULL) || (vfs_path_elements_count (vpath) == 0))
1027     {
1028         g_set_error (error, MC_ERROR, -1, "vpath object is empty");
1029         return NULL;
1030
1031     }
1032     for (element_index = 0; element_index < vfs_path_elements_count (vpath); element_index++)
1033     {
1034         char *groupname;
1035         const vfs_path_element_t *element;
1036
1037         groupname = g_strdup_printf ("path-element-%zd", element_index);
1038         element = vfs_path_get_by_index (vpath, element_index);
1039         /* convert one element to config group */
1040
1041         mc_config_set_string_raw (cpath, groupname, "path", element->path);
1042         mc_config_set_string_raw (cpath, groupname, "class-name", element->class->name);
1043         mc_config_set_string_raw (cpath, groupname, "encoding", element->encoding);
1044
1045         mc_config_set_string_raw (cpath, groupname, "vfs_prefix", element->vfs_prefix);
1046
1047         mc_config_set_string_raw (cpath, groupname, "user", element->user);
1048         mc_config_set_string_raw (cpath, groupname, "password", element->password);
1049         mc_config_set_string_raw (cpath, groupname, "host", element->host);
1050         if (element->port != 0)
1051             mc_config_set_int (cpath, groupname, "port", element->port);
1052
1053         g_free (groupname);
1054     }
1055
1056     ret_value = mc_serialize_config (cpath, error);
1057     mc_config_deinit (cpath);
1058     return ret_value;
1059 }
1060
1061 /* --------------------------------------------------------------------------------------------- */
1062 /**
1063  * Deserialize string to vfs_path_t object
1064  *
1065  * @param data data for serialization
1066  * @param error contain pointer to object for handle error code and message
1067  *
1068  * @return newly allocated vfs_path_t object
1069  */
1070
1071 vfs_path_t *
1072 vfs_path_deserialize (const char *data, GError ** error)
1073 {
1074     mc_config_t *cpath = mc_deserialize_config (data, error);
1075     size_t element_index = 0;
1076     vfs_path_t *vpath;
1077
1078     if (cpath == NULL)
1079         return NULL;
1080
1081     vpath = vfs_path_new ();
1082
1083     while (TRUE)
1084     {
1085         vfs_path_element_t *element;
1086         char *cfg_value;
1087         char *groupname;
1088
1089         groupname = g_strdup_printf ("path-element-%zd", element_index);
1090         if (!mc_config_has_group (cpath, groupname))
1091         {
1092             g_free (groupname);
1093             break;
1094         }
1095
1096         element = g_new0 (vfs_path_element_t, 1);
1097
1098         cfg_value = mc_config_get_string_raw (cpath, groupname, "class-name", NULL);
1099         element->class = vfs_get_class_by_name (cfg_value);
1100         if (element->class == NULL)
1101         {
1102             g_free (element);
1103             vfs_path_free (vpath);
1104             g_set_error (error, MC_ERROR, -1, "Unable to find VFS class by name '%s'", cfg_value);
1105             g_free (cfg_value);
1106             mc_config_deinit (cpath);
1107             return NULL;
1108         }
1109         g_free (cfg_value);
1110
1111         element->path = mc_config_get_string_raw (cpath, groupname, "path", NULL);
1112         element->encoding = mc_config_get_string_raw (cpath, groupname, "encoding", NULL);
1113         element->dir.converter =
1114             (element->encoding != NULL) ? str_crt_conv_from (element->encoding) : INVALID_CONV;
1115
1116         element->vfs_prefix = mc_config_get_string_raw (cpath, groupname, "vfs_prefix", NULL);
1117
1118         element->user = mc_config_get_string_raw (cpath, groupname, "user", NULL);
1119         element->password = mc_config_get_string_raw (cpath, groupname, "password", NULL);
1120         element->host = mc_config_get_string_raw (cpath, groupname, "host", NULL);
1121         element->port = mc_config_get_int (cpath, groupname, "port", 0);
1122
1123         vpath->path = g_array_append_val (vpath->path, element);
1124
1125         g_free (groupname);
1126         element_index++;
1127     }
1128
1129     mc_config_deinit (cpath);
1130     if (vfs_path_elements_count (vpath) == 0)
1131     {
1132         vfs_path_free (vpath);
1133         g_set_error (error, MC_ERROR, -1, "No any path elements found");
1134         return NULL;
1135     }
1136
1137     return vpath;
1138 }
1139
1140 /* --------------------------------------------------------------------------------------------- */
1141 /**
1142  * Build vfs_path_t object from arguments.
1143  *
1144  * @param ... path tokens, terminated by NULL
1145  *
1146  * @return newly allocated vfs_path_t object
1147  */
1148
1149 vfs_path_t *
1150 vfs_path_build_filename (const char *first_element, ...)
1151 {
1152     va_list args;
1153     char *str_path;
1154     vfs_path_t *vpath;
1155
1156     if (first_element == NULL)
1157         return NULL;
1158
1159     va_start (args, first_element);
1160     str_path = mc_build_filenamev (first_element, args);
1161     va_end (args);
1162     vpath = vfs_path_from_str (str_path);
1163     g_free (str_path);
1164     return vpath;
1165 }
1166
1167 /* --------------------------------------------------------------------------------------------- */
1168 /**
1169  * Append tokens to path object
1170  *
1171  * @param vpath path object
1172  * @param ... NULL-terminated strings
1173  *
1174  * @return newly allocated path object
1175  */
1176
1177 vfs_path_t *
1178 vfs_path_append_new (const vfs_path_t * vpath, const char *first_element, ...)
1179 {
1180     va_list args;
1181     char *str_path, *result_str;
1182     vfs_path_t *ret_vpath;
1183
1184     if (vpath == NULL || first_element == NULL)
1185         return NULL;
1186
1187     va_start (args, first_element);
1188     str_path = mc_build_filenamev (first_element, args);
1189     va_end (args);
1190
1191     result_str = vfs_path_to_str (vpath);
1192     ret_vpath = vfs_path_build_filename (result_str, str_path, NULL);
1193     g_free (result_str);
1194     g_free (str_path);
1195
1196     return ret_vpath;
1197
1198 }
1199
1200 /* --------------------------------------------------------------------------------------------- */
1201
1202 /**
1203  * Append vpath_t tokens to path object
1204  *
1205  * @param ... NULL-terminated vpath objects
1206  *
1207  * @return newly allocated path object
1208  */
1209
1210 vfs_path_t *
1211 vfs_path_append_vpath_new (const vfs_path_t * first_vpath, ...)
1212 {
1213     va_list args;
1214     vfs_path_t *ret_vpath;
1215     const vfs_path_t *current_vpath = first_vpath;
1216
1217     if (first_vpath == NULL)
1218         return NULL;
1219
1220     ret_vpath = vfs_path_new ();
1221
1222     va_start (args, first_vpath);
1223     do
1224     {
1225         int vindex;
1226
1227         for (vindex = 0; vindex < vfs_path_elements_count (current_vpath); vindex++)
1228         {
1229             vfs_path_element_t *path_element;
1230
1231             path_element = vfs_path_element_clone (vfs_path_get_by_index (current_vpath, vindex));
1232             g_array_append_val (ret_vpath->path, path_element);
1233         }
1234         current_vpath = va_arg (args, const vfs_path_t *);
1235     }
1236     while (current_vpath != NULL);
1237     va_end (args);
1238
1239     return ret_vpath;
1240 }
1241
1242 /* --------------------------------------------------------------------------------------------- */
1243 /**
1244  * get tockens count in path.
1245  *
1246  * @param vpath path object
1247  *
1248  * @return count of tokens
1249  */
1250
1251 size_t
1252 vfs_path_tokens_count (const vfs_path_t * vpath)
1253 {
1254     size_t count_tokens = 0;
1255     int element_index;
1256
1257     if (vpath == NULL)
1258         return 0;
1259
1260     for (element_index = 0; element_index < vfs_path_elements_count (vpath); element_index++)
1261     {
1262         const vfs_path_element_t *element;
1263         char **path_tokens, **iterator;
1264
1265         element = vfs_path_get_by_index (vpath, element_index);
1266         path_tokens = iterator = g_strsplit (element->path, PATH_SEP_STR, -1);
1267
1268         while (*iterator != NULL)
1269         {
1270             if (**iterator != '\0')
1271                 count_tokens++;
1272             iterator++;
1273         }
1274         g_strfreev (path_tokens);
1275     }
1276     return count_tokens;
1277 }
1278
1279 /* --------------------------------------------------------------------------------------------- */
1280 /**
1281  * Get subpath by tokens
1282  *
1283  * @param vpath path object
1284  * @param start_position first token for got/ Started from 0.
1285  *        If negative, then position will be relative to end of path
1286  * @param length count of tokens
1287  *
1288  * @return newly allocated string with path tokens separated by slash
1289  */
1290
1291 char *
1292 vfs_path_tokens_get (const vfs_path_t * vpath, ssize_t start_position, ssize_t length)
1293 {
1294     GString *ret_tokens, *element_tokens;
1295     int element_index;
1296     size_t tokens_count = vfs_path_tokens_count (vpath);
1297
1298     if (vpath == NULL)
1299         return NULL;
1300
1301     if (length == 0)
1302         length = tokens_count;
1303
1304     if (length < 0)
1305         length = tokens_count + length;
1306
1307     if (start_position < 0)
1308         start_position = (ssize_t) tokens_count + start_position;
1309
1310     if (start_position < 0)
1311         return NULL;
1312
1313     if (start_position >= (ssize_t) tokens_count)
1314         return NULL;
1315
1316     if (start_position + (ssize_t) length > (ssize_t) tokens_count)
1317         length = tokens_count - start_position;
1318
1319     ret_tokens = g_string_sized_new (32);
1320     element_tokens = g_string_sized_new (32);
1321
1322     for (element_index = 0; element_index < vfs_path_elements_count (vpath); element_index++)
1323     {
1324         const vfs_path_element_t *element;
1325         char **path_tokens, **iterator;
1326
1327         g_string_assign (element_tokens, "");
1328         element = vfs_path_get_by_index (vpath, element_index);
1329         path_tokens = iterator = g_strsplit (element->path, PATH_SEP_STR, -1);
1330
1331         while (*iterator != NULL)
1332         {
1333             if (**iterator != '\0')
1334             {
1335                 if (start_position == 0)
1336                 {
1337                     if (length == 0)
1338                     {
1339                         vfs_path_tokens_add_class_info (element, ret_tokens, element_tokens);
1340                         g_string_free (element_tokens, TRUE);
1341                         g_strfreev (path_tokens);
1342                         return g_string_free (ret_tokens, FALSE);
1343                     }
1344                     length--;
1345                     if (element_tokens->len != 0)
1346                         g_string_append_c (element_tokens, PATH_SEP);
1347                     g_string_append (element_tokens, *iterator);
1348                 }
1349                 else
1350                     start_position--;
1351             }
1352             iterator++;
1353         }
1354         g_strfreev (path_tokens);
1355         vfs_path_tokens_add_class_info (element, ret_tokens, element_tokens);
1356     }
1357
1358     g_string_free (element_tokens, TRUE);
1359     return g_string_free (ret_tokens, !(start_position == 0 && length == 0));
1360 }
1361
1362 /* --------------------------------------------------------------------------------------------- */
1363 /**
1364  * Get subpath by tokens
1365  *
1366  * @param vpath path object
1367  * @param start_position first token for got/ Started from 0.
1368  *        If negative, then position will be relative to end of path
1369  * @param length count of tokens
1370  *
1371  * @return newly allocated path object with path tokens separated by slash
1372  */
1373
1374 vfs_path_t *
1375 vfs_path_vtokens_get (const vfs_path_t * vpath, ssize_t start_position, ssize_t length)
1376 {
1377     char *str_tokens;
1378     vfs_path_t *ret_vpath = NULL;
1379
1380     str_tokens = vfs_path_tokens_get (vpath, start_position, length);
1381     if (str_tokens != NULL)
1382     {
1383         ret_vpath = vfs_path_from_str_flags (str_tokens, VPF_NO_CANON);
1384         g_free (str_tokens);
1385     }
1386     return ret_vpath;
1387 }
1388
1389 /* --------------------------------------------------------------------------------------------- */
1390 /**
1391  * Build URL parameters (such as user:pass@host:port) from one path element object
1392  *
1393  * @param element path element
1394  *
1395  * @return newly allocated string
1396  */
1397
1398 char *
1399 vfs_path_build_url_params_str (const vfs_path_element_t * element, gboolean keep_password)
1400 {
1401     GString *buffer;
1402
1403     if (element == NULL)
1404         return NULL;
1405
1406     buffer = g_string_new ("");
1407
1408     if (element->user != NULL)
1409         g_string_append (buffer, element->user);
1410
1411     if (element->password != NULL && keep_password)
1412     {
1413         g_string_append_c (buffer, ':');
1414         g_string_append (buffer, element->password);
1415     }
1416
1417     if (element->host != NULL)
1418     {
1419         if ((element->user != NULL) || (element->password != NULL))
1420             g_string_append_c (buffer, '@');
1421         if (element->ipv6)
1422             g_string_append_c (buffer, '[');
1423         g_string_append (buffer, element->host);
1424         if (element->ipv6)
1425             g_string_append_c (buffer, ']');
1426     }
1427
1428     if ((element->port) != 0 && (element->host != NULL))
1429     {
1430         g_string_append_c (buffer, ':');
1431         g_string_append_printf (buffer, "%d", element->port);
1432     }
1433
1434     return g_string_free (buffer, FALSE);
1435 }
1436
1437 /* --------------------------------------------------------------------------------------------- */
1438 /**
1439  * Compare two path objects as strings
1440  *
1441  * @param vpath1 first path object
1442  * @param vpath2 second vpath object
1443  *
1444  * @return integer value like to strcmp.
1445  */
1446
1447 int
1448 vfs_path_cmp (const vfs_path_t * vpath1, const vfs_path_t * vpath2)
1449 {
1450     char *path1;
1451     char *path2;
1452     int ret_val;
1453
1454     if (vpath1 == NULL || vpath2 == NULL)
1455         return -1;
1456
1457     path1 = vfs_path_to_str (vpath1);
1458     path2 = vfs_path_to_str (vpath2);
1459
1460     ret_val = strcmp (path1, path2);
1461
1462     g_free (path1);
1463     g_free (path2);
1464
1465     return ret_val;
1466 }
1467
1468 /* --------------------------------------------------------------------------------------------- */
1469 /**
1470  * Compare two path objects as strings
1471  *
1472  * @param vpath1 first path object
1473  * @param vpath2 second vpath object
1474  * @param len number of first 'len' characters
1475  *
1476  * @return integer value like to strcmp.
1477  */
1478
1479 int
1480 vfs_path_ncmp (const vfs_path_t * vpath1, const vfs_path_t * vpath2, size_t len)
1481 {
1482     char *path1;
1483     char *path2;
1484     int ret_val;
1485
1486     if (vpath1 == NULL || vpath2 == NULL)
1487         return -1;
1488
1489     path1 = vfs_path_to_str (vpath1);
1490     path2 = vfs_path_to_str (vpath2);
1491
1492     ret_val = strncmp (path1, path2, len);
1493
1494     g_free (path1);
1495     g_free (path2);
1496
1497     return ret_val;
1498 }
1499
1500 /* --------------------------------------------------------------------------------------------- */
1501 /**
1502  * Calculate path length in string representation
1503  *
1504  * @param vpath path object
1505  *
1506  * @return length of path
1507  */
1508
1509 size_t
1510 vfs_path_len (const vfs_path_t * vpath)
1511 {
1512     char *path;
1513     size_t ret_val;
1514
1515     if (vpath == NULL)
1516         return 0;
1517
1518     path = vfs_path_to_str (vpath);
1519     ret_val = strlen (path);
1520     g_free (path);
1521     return ret_val;
1522 }
1523
1524 /* --------------------------------------------------------------------------------------------- */
1525 /**
1526  * Convert relative vpath object to absolute
1527  *
1528  * @param vpath path object
1529  *
1530  * @return absolute path object
1531  */
1532
1533 vfs_path_t *
1534 vfs_path_to_absolute (const vfs_path_t * vpath)
1535 {
1536     vfs_path_t *absolute_vpath;
1537     char *path_str;
1538
1539     if (!vpath->relative)
1540         return vfs_path_clone (vpath);
1541
1542     path_str = vfs_path_to_str (vpath);
1543     absolute_vpath = vfs_path_from_str (path_str);
1544     g_free (path_str);
1545     return absolute_vpath;
1546 }
1547
1548 /* --------------------------------------------------------------------------------------------- */