gio/gfileinfo.c

   1 /* GIO - GLib Input, Output and Streaming Library
   2  *
   3  * Copyright (C) 2006-2007 Red Hat, Inc.
   4  *
   5  * This library is free software; you can redistribute it and/or
   6  * modify it under the terms of the GNU Lesser General Public
   7  * License as published by the Free Software Foundation; either
   8  * version 2 of the License, or (at your option) any later version.
   9  *
  10  * This library 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 GNU
  13  * Lesser General Public License for more details.
  14  *
  15  * You should have received a copy of the GNU Lesser General
  16  * Public License along with this library; if not, write to the
  17  * Free Software Foundation, Inc., 59 Temple Place, Suite 330,
  18  * Boston, MA 02111-1307, USA.
  19  *
  20  * Author: Alexander Larsson <alexl@redhat.com>
  21  */
  22
  23 /**
  24  * SECTION:gfileinfo
  25  * @short_description: File Information and Attributes
  26  * @include: gio/gio.h
  27  * @see_also: #GFile, <link linkend="gio-GFileAttribute">GFileAttribute</link>
  28  *
  29  * Functionality for manipulating basic metadata for files. #GFileInfo
  30  * implements methods for getting information that all files should
  31  * contain, and allows for manipulation of extended attributes.
  32  *
  33  * See <link linkend="gio-GFileAttribute">GFileAttribute</link> for more
  34  * information on how GIO handles file attributes.
  35  *
  36  * To obtain a #GFileInfo for a #GFile, use g_file_query_info() (or its
  37  * async variant). To obtain a #GFileInfo for a file input or output
  38  * stream, use g_file_input_stream_query_info() or
  39  * g_file_output_stream_query_info() (or their async variants).
  40  *
  41  * To change the actual attributes of a file, you should then set the
  42  * attribute in the #GFileInfo and call g_file_set_attributes_from_info()
  43  * or g_file_set_attributes_async() on a GFile.
  44  *
  45  * However, not all attributes can be changed in the file. For instance,
  46  * the actual size of a file cannot be changed via g_file_info_set_size().
  47  * You may call g_file_query_settable_attributes() and
  48  * g_file_query_writable_namespaces() to discover the settable attributes
  49  * of a particular file at runtime.
  50  *
  51  * #GFileAttributeMatcher allows for searching through a #GFileInfo for
  52  * attributes.
  53  **/
  54
  55 #include "config.h"
  56
  57 #include <string.h>
  58
  59 #include "gfileinfo.h"
  60 #include "gfileinfo-priv.h"
  61 #include "gfileattribute-priv.h"
  62 #include "gicon.h"
  63 #include "glibintl.h"
  64
  65
  66 /* We use this nasty thing, because NULL is a valid attribute matcher (matches nothing) */
  67 #define NO_ATTRIBUTE_MASK ((GFileAttributeMatcher *)1)
  68
  69 typedef struct  {
  70   guint32 attribute;
  71   GFileAttributeValue value;
  72 } GFileAttribute;
  73
  74 struct _GFileInfo
  75 {
  76   GObject parent_instance;
  77
  78   GArray *attributes;
  79   GFileAttributeMatcher *mask;
  80 };
  81
  82 struct _GFileInfoClass
  83 {
  84   GObjectClass parent_class;
  85 };
  86
  87
  88 G_DEFINE_TYPE (GFileInfo, g_file_info, G_TYPE_OBJECT);
  89
  90 typedef struct {
  91   guint32 id;
  92   guint32 attribute_id_counter;
  93 } NSInfo;
  94
  95 G_LOCK_DEFINE_STATIC (attribute_hash);
  96 static int namespace_id_counter = 0;
  97 static GHashTable *ns_hash = NULL;
  98 static GHashTable *attribute_hash = NULL;
  99 static char ***attributes = NULL;
 100
 101 /* Attribute ids are 32bit, we split it up like this:
 102  * |------------|--------------------|
 103  *   12 bit          20 bit
 104  *   namespace      attribute id
 105  *
 106  * This way the attributes gets sorted in namespace order
 107  */
 108
 109 #define NS_POS 20
 110 #define NS_MASK ((guint32)((1<<12) - 1))
 111 #define ID_POS 0
 112 #define ID_MASK ((guint32)((1<<20) - 1))
 113
 114 #define GET_NS(_attr_id) \
 115     (((guint32) (_attr_id) >> NS_POS) & NS_MASK)
 116 #define GET_ID(_attr_id) \
 117     (((guint32)(_attr_id) >> ID_POS) & ID_MASK)
 118
 119 #define MAKE_ATTR_ID(_ns, _id)                          \
 120     ( ((((guint32) _ns) & NS_MASK) << NS_POS) |         \
 121       ((((guint32) _id) & ID_MASK) << ID_POS) )
 122
 123 static NSInfo *
 124 _lookup_namespace (const char *namespace)
 125 {
 126   NSInfo *ns_info;
 127
 128   ns_info = g_hash_table_lookup (ns_hash, namespace);
 129   if (ns_info == NULL)
 130     {
 131       ns_info = g_new0 (NSInfo, 1);
 132       ns_info->id = ++namespace_id_counter;
 133       g_hash_table_insert (ns_hash, g_strdup (namespace), ns_info);
 134       attributes = g_realloc (attributes, (ns_info->id + 1) * sizeof (char **));
 135       attributes[ns_info->id] = g_new (char *, 1);
 136       attributes[ns_info->id][0] = g_strconcat (namespace, "::*", NULL);
 137     }
 138   return ns_info;
 139 }
 140
 141 static guint32
 142 _lookup_attribute (const char *attribute)
 143 {
 144   guint32 attr_id, id;
 145   char *ns;
 146   const char *colon;
 147   NSInfo *ns_info;
 148
 149   attr_id = GPOINTER_TO_UINT (g_hash_table_lookup (attribute_hash, attribute));
 150
 151   if (attr_id != 0)
 152     return attr_id;
 153
 154   colon = strstr (attribute, "::");
 155   if (colon)
 156     ns = g_strndup (attribute, colon - attribute);
 157   else
 158     ns = g_strdup ("");
 159
 160   ns_info = _lookup_namespace (ns);
 161   g_free (ns);
 162
 163   id = ++ns_info->attribute_id_counter;
 164   attributes[ns_info->id] = g_realloc (attributes[ns_info->id], (id + 1) * sizeof (char *));
 165   attributes[ns_info->id][id] = g_strdup (attribute);
 166
 167   attr_id = MAKE_ATTR_ID (ns_info->id, id);
 168
 169   g_hash_table_insert (attribute_hash, attributes[ns_info->id][id], GUINT_TO_POINTER (attr_id));
 170
 171   return attr_id;
 172 }
 173
 174 static void
 175 ensure_attribute_hash (void)
 176 {
 177   if (attribute_hash != NULL)
 178     return;
 179
 180   ns_hash = g_hash_table_new (g_str_hash, g_str_equal);
 181   attribute_hash = g_hash_table_new (g_str_hash, g_str_equal);
 182
 183 #define REGISTER_ATTRIBUTE(name) G_STMT_START{\
 184   guint _u = _lookup_attribute (G_FILE_ATTRIBUTE_ ## name); \
 185   /* use for generating the ID: g_print ("#define G_FILE_ATTRIBUTE_ID_%s (%u + %u)\n", #name + 17, _u & ~ID_MASK, _u & ID_MASK); */ \
 186   g_assert (_u == G_FILE_ATTRIBUTE_ID_ ## name); \
 187 }G_STMT_END
 188
 189   REGISTER_ATTRIBUTE (STANDARD_TYPE);
 190   REGISTER_ATTRIBUTE (STANDARD_IS_HIDDEN);
 191   REGISTER_ATTRIBUTE (STANDARD_IS_BACKUP);
 192   REGISTER_ATTRIBUTE (STANDARD_IS_SYMLINK);
 193   REGISTER_ATTRIBUTE (STANDARD_IS_VIRTUAL);
 194   REGISTER_ATTRIBUTE (STANDARD_NAME);
 195   REGISTER_ATTRIBUTE (STANDARD_DISPLAY_NAME);
 196   REGISTER_ATTRIBUTE (STANDARD_EDIT_NAME);
 197   REGISTER_ATTRIBUTE (STANDARD_COPY_NAME);
 198   REGISTER_ATTRIBUTE (STANDARD_DESCRIPTION);
 199   REGISTER_ATTRIBUTE (STANDARD_ICON);
 200   REGISTER_ATTRIBUTE (STANDARD_CONTENT_TYPE);
 201   REGISTER_ATTRIBUTE (STANDARD_FAST_CONTENT_TYPE);
 202   REGISTER_ATTRIBUTE (STANDARD_SIZE);
 203   REGISTER_ATTRIBUTE (STANDARD_ALLOCATED_SIZE);
 204   REGISTER_ATTRIBUTE (STANDARD_SYMLINK_TARGET);
 205   REGISTER_ATTRIBUTE (STANDARD_TARGET_URI);
 206   REGISTER_ATTRIBUTE (STANDARD_SORT_ORDER);
 207   REGISTER_ATTRIBUTE (ETAG_VALUE);
 208   REGISTER_ATTRIBUTE (ID_FILE);
 209   REGISTER_ATTRIBUTE (ID_FILESYSTEM);
 210   REGISTER_ATTRIBUTE (ACCESS_CAN_READ);
 211   REGISTER_ATTRIBUTE (ACCESS_CAN_WRITE);
 212   REGISTER_ATTRIBUTE (ACCESS_CAN_EXECUTE);
 213   REGISTER_ATTRIBUTE (ACCESS_CAN_DELETE);
 214   REGISTER_ATTRIBUTE (ACCESS_CAN_TRASH);
 215   REGISTER_ATTRIBUTE (ACCESS_CAN_RENAME);
 216   REGISTER_ATTRIBUTE (MOUNTABLE_CAN_MOUNT);
 217   REGISTER_ATTRIBUTE (MOUNTABLE_CAN_UNMOUNT);
 218   REGISTER_ATTRIBUTE (MOUNTABLE_CAN_EJECT);
 219   REGISTER_ATTRIBUTE (MOUNTABLE_UNIX_DEVICE);
 220   REGISTER_ATTRIBUTE (MOUNTABLE_UNIX_DEVICE_FILE);
 221   REGISTER_ATTRIBUTE (MOUNTABLE_HAL_UDI);
 222   REGISTER_ATTRIBUTE (MOUNTABLE_CAN_START);
 223   REGISTER_ATTRIBUTE (MOUNTABLE_CAN_START_DEGRADED);
 224   REGISTER_ATTRIBUTE (MOUNTABLE_CAN_STOP);
 225   REGISTER_ATTRIBUTE (MOUNTABLE_START_STOP_TYPE);
 226   REGISTER_ATTRIBUTE (MOUNTABLE_CAN_POLL);
 227   REGISTER_ATTRIBUTE (MOUNTABLE_IS_MEDIA_CHECK_AUTOMATIC);
 228   REGISTER_ATTRIBUTE (TIME_MODIFIED);
 229   REGISTER_ATTRIBUTE (TIME_MODIFIED_USEC);
 230   REGISTER_ATTRIBUTE (TIME_ACCESS);
 231   REGISTER_ATTRIBUTE (TIME_ACCESS_USEC);
 232   REGISTER_ATTRIBUTE (TIME_CHANGED);
 233   REGISTER_ATTRIBUTE (TIME_CHANGED_USEC);
 234   REGISTER_ATTRIBUTE (TIME_CREATED);
 235   REGISTER_ATTRIBUTE (TIME_CREATED_USEC);
 236   REGISTER_ATTRIBUTE (UNIX_DEVICE);
 237   REGISTER_ATTRIBUTE (UNIX_INODE);
 238   REGISTER_ATTRIBUTE (UNIX_MODE);
 239   REGISTER_ATTRIBUTE (UNIX_NLINK);
 240   REGISTER_ATTRIBUTE (UNIX_UID);
 241   REGISTER_ATTRIBUTE (UNIX_GID);
 242   REGISTER_ATTRIBUTE (UNIX_RDEV);
 243   REGISTER_ATTRIBUTE (UNIX_BLOCK_SIZE);
 244   REGISTER_ATTRIBUTE (UNIX_BLOCKS);
 245   REGISTER_ATTRIBUTE (UNIX_IS_MOUNTPOINT);
 246   REGISTER_ATTRIBUTE (DOS_IS_ARCHIVE);
 247   REGISTER_ATTRIBUTE (DOS_IS_SYSTEM);
 248   REGISTER_ATTRIBUTE (OWNER_USER);
 249   REGISTER_ATTRIBUTE (OWNER_USER_REAL);
 250   REGISTER_ATTRIBUTE (OWNER_GROUP);
 251   REGISTER_ATTRIBUTE (THUMBNAIL_PATH);
 252   REGISTER_ATTRIBUTE (THUMBNAILING_FAILED);
 253   REGISTER_ATTRIBUTE (PREVIEW_ICON);
 254   REGISTER_ATTRIBUTE (FILESYSTEM_SIZE);
 255   REGISTER_ATTRIBUTE (FILESYSTEM_FREE);
 256   REGISTER_ATTRIBUTE (FILESYSTEM_TYPE);
 257   REGISTER_ATTRIBUTE (FILESYSTEM_READONLY);
 258   REGISTER_ATTRIBUTE (FILESYSTEM_USE_PREVIEW);
 259   REGISTER_ATTRIBUTE (GVFS_BACKEND);
 260   REGISTER_ATTRIBUTE (SELINUX_CONTEXT);
 261   REGISTER_ATTRIBUTE (TRASH_ITEM_COUNT);
 262   REGISTER_ATTRIBUTE (TRASH_ORIG_PATH);
 263   REGISTER_ATTRIBUTE (TRASH_DELETION_DATE);
 264
 265 #undef REGISTER_ATTRIBUTE
 266 }
 267
 268 static guint32
 269 lookup_namespace (const char *namespace)
 270 {
 271   NSInfo *ns_info;
 272   guint32 id;
 273
 274   G_LOCK (attribute_hash);
 275
 276   ensure_attribute_hash ();
 277
 278   ns_info = _lookup_namespace (namespace);
 279   id = 0;
 280   if (ns_info)
 281     id = ns_info->id;
 282
 283   G_UNLOCK (attribute_hash);
 284
 285   return id;
 286 }
 287
 288 static char *
 289 get_attribute_for_id (int attribute)
 290 {
 291   char *s;
 292   G_LOCK (attribute_hash);
 293   s = attributes[GET_NS(attribute)][GET_ID(attribute)];
 294   G_UNLOCK (attribute_hash);
 295   return s;
 296 }
 297
 298 static guint32
 299 lookup_attribute (const char *attribute)
 300 {
 301   guint32 attr_id;
 302
 303   G_LOCK (attribute_hash);
 304   ensure_attribute_hash ();
 305
 306   attr_id = _lookup_attribute (attribute);
 307
 308   G_UNLOCK (attribute_hash);
 309
 310   return attr_id;
 311 }
 312
 313 static void
 314 g_file_info_finalize (GObject *object)
 315 {
 316   GFileInfo *info;
 317   int i;
 318   GFileAttribute *attrs;
 319
 320   info = G_FILE_INFO (object);
 321
 322   attrs = (GFileAttribute *)info->attributes->data;
 323   for (i = 0; i < info->attributes->len; i++)
 324     _g_file_attribute_value_clear (&attrs[i].value);
 325   g_array_free (info->attributes, TRUE);
 326
 327   if (info->mask != NO_ATTRIBUTE_MASK)
 328     g_file_attribute_matcher_unref (info->mask);
 329
 330   G_OBJECT_CLASS (g_file_info_parent_class)->finalize (object);
 331 }
 332
 333 static void
 334 g_file_info_class_init (GFileInfoClass *klass)
 335 {
 336   GObjectClass *gobject_class = G_OBJECT_CLASS (klass);
 337
 338   gobject_class->finalize = g_file_info_finalize;
 339 }
 340
 341 static void
 342 g_file_info_init (GFileInfo *info)
 343 {
 344   info->mask = NO_ATTRIBUTE_MASK;
 345   info->attributes = g_array_new (FALSE, FALSE,
 346                                   sizeof (GFileAttribute));
 347 }
 348
 349 /**
 350  * g_file_info_new:
 351  *
 352  * Creates a new file info structure.
 353  *
 354  * Returns: a #GFileInfo.
 355  **/
 356 GFileInfo *
 357 g_file_info_new (void)
 358 {
 359   return g_object_new (G_TYPE_FILE_INFO, NULL);
 360 }
 361
 362 /**
 363  * g_file_info_copy_into:
 364  * @src_info: source to copy attributes from.
 365  * @dest_info: destination to copy attributes to.
 366  *
 367  * Copies all of the <link linkend="gio-GFileAttribute">GFileAttribute</link>s
 368  * from @src_info to @dest_info.
 369  **/
 370 void
 371 g_file_info_copy_into (GFileInfo *src_info,
 372                        GFileInfo *dest_info)
 373 {
 374   GFileAttribute *source, *dest;
 375   int i;
 376
 377   g_return_if_fail (G_IS_FILE_INFO (src_info));
 378   g_return_if_fail (G_IS_FILE_INFO (dest_info));
 379
 380   dest = (GFileAttribute *)dest_info->attributes->data;
 381   for (i = 0; i < dest_info->attributes->len; i++)
 382     _g_file_attribute_value_clear (&dest[i].value);
 383
 384   g_array_set_size (dest_info->attributes,
 385                     src_info->attributes->len);
 386
 387   source = (GFileAttribute *)src_info->attributes->data;
 388   dest = (GFileAttribute *)dest_info->attributes->data;
 389
 390   for (i = 0; i < src_info->attributes->len; i++)
 391     {
 392       dest[i].attribute = source[i].attribute;
 393       dest[i].value.type = G_FILE_ATTRIBUTE_TYPE_INVALID;
 394       _g_file_attribute_value_set (&dest[i].value, &source[i].value);
 395     }
 396
 397   if (dest_info->mask != NO_ATTRIBUTE_MASK)
 398     g_file_attribute_matcher_unref (dest_info->mask);
 399
 400   if (src_info->mask == NO_ATTRIBUTE_MASK)
 401     dest_info->mask = NO_ATTRIBUTE_MASK;
 402   else
 403     dest_info->mask = g_file_attribute_matcher_ref (src_info->mask);
 404 }
 405
 406 /**
 407  * g_file_info_dup:
 408  * @other: a #GFileInfo.
 409  *
 410  * Duplicates a file info structure.
 411  *
 412  * Returns: (transfer full): a duplicate #GFileInfo of @other.
 413  **/
 414 GFileInfo *
 415 g_file_info_dup (GFileInfo *other)
 416 {
 417   GFileInfo *new;
 418
 419   g_return_val_if_fail (G_IS_FILE_INFO (other), NULL);
 420
 421   new = g_file_info_new ();
 422   g_file_info_copy_into (other, new);
 423   return new;
 424 }
 425
 426 /**
 427  * g_file_info_set_attribute_mask:
 428  * @info: a #GFileInfo.
 429  * @mask: a #GFileAttributeMatcher.
 430  *
 431  * Sets @mask on @info to match specific attribute types.
 432  **/
 433 void
 434 g_file_info_set_attribute_mask (GFileInfo             *info,
 435                                 GFileAttributeMatcher *mask)
 436 {
 437   GFileAttribute *attr;
 438   int i;
 439
 440   g_return_if_fail (G_IS_FILE_INFO (info));
 441
 442   if (mask != info->mask)
 443     {
 444       if (info->mask != NO_ATTRIBUTE_MASK)
 445         g_file_attribute_matcher_unref (info->mask);
 446       info->mask = g_file_attribute_matcher_ref (mask);
 447
 448       /* Remove non-matching attributes */
 449       for (i = 0; i < info->attributes->len; i++)
 450         {
 451           attr = &g_array_index (info->attributes, GFileAttribute, i);
 452           if (!_g_file_attribute_matcher_matches_id (mask,
 453                                                     attr->attribute))
 454             {
 455               _g_file_attribute_value_clear (&attr->value);
 456               g_array_remove_index (info->attributes, i);
 457               i--;
 458             }
 459         }
 460     }
 461 }
 462
 463 /**
 464  * g_file_info_unset_attribute_mask:
 465  * @info: #GFileInfo.
 466  *
 467  * Unsets a mask set by g_file_info_set_attribute_mask(), if one
 468  * is set.
 469  **/
 470 void
 471 g_file_info_unset_attribute_mask (GFileInfo *info)
 472 {
 473   g_return_if_fail (G_IS_FILE_INFO (info));
 474
 475   if (info->mask != NO_ATTRIBUTE_MASK)
 476     g_file_attribute_matcher_unref (info->mask);
 477   info->mask = NO_ATTRIBUTE_MASK;
 478 }
 479
 480 /**
 481  * g_file_info_clear_status:
 482  * @info: a #GFileInfo.
 483  *
 484  * Clears the status information from @info.
 485  **/
 486 void
 487 g_file_info_clear_status (GFileInfo  *info)
 488 {
 489   GFileAttribute *attrs;
 490   int i;
 491
 492   g_return_if_fail (G_IS_FILE_INFO (info));
 493
 494   attrs = (GFileAttribute *)info->attributes->data;
 495   for (i = 0; i < info->attributes->len; i++)
 496     attrs[i].value.status = G_FILE_ATTRIBUTE_STATUS_UNSET;
 497 }
 498
 499 static int
 500 g_file_info_find_place (GFileInfo  *info,
 501                         guint32     attribute)
 502 {
 503   int min, max, med;
 504   GFileAttribute *attrs;
 505   /* Binary search for the place where attribute would be, if it's
 506      in the array */
 507
 508   min = 0;
 509   max = info->attributes->len;
 510
 511   attrs = (GFileAttribute *)info->attributes->data;
 512
 513   while (min < max)
 514     {
 515       med = min + (max - min) / 2;
 516       if (attrs[med].attribute == attribute)
 517         {
 518           min = med;
 519           break;
 520         }
 521       else if (attrs[med].attribute < attribute)
 522         min = med + 1;
 523       else /* attrs[med].attribute > attribute */
 524         max = med;
 525     }
 526
 527   return min;
 528 }
 529
 530 static GFileAttributeValue *
 531 g_file_info_find_value (GFileInfo *info,
 532                         guint32    attr_id)
 533 {
 534   GFileAttribute *attrs;
 535   int i;
 536
 537   i = g_file_info_find_place (info, attr_id);
 538   attrs = (GFileAttribute *)info->attributes->data;
 539   if (i < info->attributes->len &&
 540       attrs[i].attribute == attr_id)
 541     return &attrs[i].value;
 542
 543   return NULL;
 544 }
 545
 546 static GFileAttributeValue *
 547 g_file_info_find_value_by_name (GFileInfo  *info,
 548                                 const char *attribute)
 549 {
 550   guint32 attr_id;
 551
 552   attr_id = lookup_attribute (attribute);
 553   return g_file_info_find_value (info, attr_id);
 554 }
 555
 556 /**
 557  * g_file_info_has_attribute:
 558  * @info: a #GFileInfo.
 559  * @attribute: a file attribute key.
 560  *
 561  * Checks if a file info structure has an attribute named @attribute.
 562  *
 563  * Returns: %TRUE if @Ginfo has an attribute named @attribute,
 564  *     %FALSE otherwise.
 565  **/
 566 gboolean
 567 g_file_info_has_attribute (GFileInfo  *info,
 568                            const char *attribute)
 569 {
 570   GFileAttributeValue *value;
 571
 572   g_return_val_if_fail (G_IS_FILE_INFO (info), FALSE);
 573   g_return_val_if_fail (attribute != NULL && *attribute != '\0', FALSE);
 574
 575   value = g_file_info_find_value_by_name (info, attribute);
 576   return value != NULL;
 577 }
 578
 579 /**
 580  * g_file_info_has_namespace:
 581  * @info: a #GFileInfo.
 582  * @name_space: a file attribute namespace.
 583  *
 584  * Checks if a file info structure has an attribute in the
 585  * specified @name_space.
 586  *
 587  * Returns: %TRUE if @Ginfo has an attribute in @name_space,
 588  *     %FALSE otherwise.
 589  *
 590  * Since: 2.22
 591  **/
 592 gboolean
 593 g_file_info_has_namespace (GFileInfo  *info,
 594                            const char *name_space)
 595 {
 596   GFileAttribute *attrs;
 597   guint32 ns_id;
 598   int i;
 599
 600   g_return_val_if_fail (G_IS_FILE_INFO (info), FALSE);
 601   g_return_val_if_fail (name_space != NULL, FALSE);
 602
 603   ns_id = lookup_namespace (name_space);
 604
 605   attrs = (GFileAttribute *)info->attributes->data;
 606   for (i = 0; i < info->attributes->len; i++)
 607     {
 608       if (GET_NS (attrs[i].attribute) == ns_id)
 609         return TRUE;
 610     }
 611
 612   return FALSE;
 613 }
 614
 615 /**
 616  * g_file_info_list_attributes:
 617  * @info: a #GFileInfo.
 618  * @name_space: a file attribute key's namespace.
 619  *
 620  * Lists the file info structure's attributes.
 621  *
 622  * Returns: (array zero-terminated=1) (transfer full): a null-terminated array of strings of all of the
 623  * possible attribute types for the given @name_space, or
 624  * %NULL on error.
 625  **/
 626 char **
 627 g_file_info_list_attributes (GFileInfo  *info,
 628                              const char *name_space)
 629 {
 630   GPtrArray *names;
 631   GFileAttribute *attrs;
 632   guint32 attribute;
 633   guint32 ns_id = (name_space) ? lookup_namespace (name_space) : 0;
 634   int i;
 635
 636   g_return_val_if_fail (G_IS_FILE_INFO (info), NULL);
 637
 638   names = g_ptr_array_new ();
 639   attrs = (GFileAttribute *)info->attributes->data;
 640   for (i = 0; i < info->attributes->len; i++)
 641     {
 642       attribute = attrs[i].attribute;
 643       if (ns_id == 0 || GET_NS (attribute) == ns_id)
 644         g_ptr_array_add (names, g_strdup (get_attribute_for_id (attribute)));
 645     }
 646
 647   /* NULL terminate */
 648   g_ptr_array_add (names, NULL);
 649
 650   return (char **)g_ptr_array_free (names, FALSE);
 651 }
 652
 653 /**
 654  * g_file_info_get_attribute_type:
 655  * @info: a #GFileInfo.
 656  * @attribute: a file attribute key.
 657  *
 658  * Gets the attribute type for an attribute key.
 659  *
 660  * Returns: a #GFileAttributeType for the given @attribute, or
 661  * %G_FILE_ATTRIBUTE_TYPE_INVALID if the key is not set.
 662  **/
 663 GFileAttributeType
 664 g_file_info_get_attribute_type (GFileInfo  *info,
 665                                 const char *attribute)
 666 {
 667   GFileAttributeValue *value;
 668
 669   g_return_val_if_fail (G_IS_FILE_INFO (info), G_FILE_ATTRIBUTE_TYPE_INVALID);
 670   g_return_val_if_fail (attribute != NULL && *attribute != '\0', G_FILE_ATTRIBUTE_TYPE_INVALID);
 671
 672   value = g_file_info_find_value_by_name (info, attribute);
 673   if (value)
 674     return value->type;
 675   else
 676     return G_FILE_ATTRIBUTE_TYPE_INVALID;
 677 }
 678
 679 /**
 680  * g_file_info_remove_attribute:
 681  * @info: a #GFileInfo.
 682  * @attribute: a file attribute key.
 683  *
 684  * Removes all cases of @attribute from @info if it exists.
 685  **/
 686 void
 687 g_file_info_remove_attribute (GFileInfo  *info,
 688                               const char *attribute)
 689 {
 690   guint32 attr_id;
 691   GFileAttribute *attrs;
 692   int i;
 693
 694   g_return_if_fail (G_IS_FILE_INFO (info));
 695   g_return_if_fail (attribute != NULL && *attribute != '\0');
 696
 697   attr_id = lookup_attribute (attribute);
 698
 699   i = g_file_info_find_place (info, attr_id);
 700   attrs = (GFileAttribute *)info->attributes->data;
 701   if (i < info->attributes->len &&
 702       attrs[i].attribute == attr_id)
 703     {
 704       _g_file_attribute_value_clear (&attrs[i].value);
 705       g_array_remove_index (info->attributes, i);
 706     }
 707 }
 708
 709 /**
 710  * g_file_info_get_attribute_data:
 711  * @info: a #GFileInfo
 712  * @attribute: a file attribute key
 713  * @type: (out) (allow-none): return location for the attribute type, or %NULL
 714  * @value_pp: (out) (allow-none): return location for the attribute value, or %NULL
 715  * @status: (out) (allow-none): return location for the attribute status, or %NULL
 716  *
 717  * Gets the attribute type, value and status for an attribute key.
 718  *
 719  * Returns: (transfer none): %TRUE if @info has an attribute named @attribute,
 720  *      %FALSE otherwise.
 721  */
 722 gboolean
 723 g_file_info_get_attribute_data (GFileInfo            *info,
 724                                 const char           *attribute,
 725                                 GFileAttributeType   *type,
 726                                 gpointer             *value_pp,
 727                                 GFileAttributeStatus *status)
 728 {
 729   GFileAttributeValue *value;
 730
 731   value = g_file_info_find_value_by_name (info, attribute);
 732   if (value == NULL)
 733     return FALSE;
 734
 735   if (status)
 736     *status = value->status;
 737
 738   if (type)
 739     *type = value->type;
 740
 741   if (value_pp)
 742     *value_pp = _g_file_attribute_value_peek_as_pointer (value);
 743
 744   return TRUE;
 745 }
 746
 747 /**
 748  * g_file_info_get_attribute_status:
 749  * @info: a #GFileInfo
 750  * @attribute: a file attribute key
 751  *
 752  * Gets the attribute status for an attribute key.
 753  *
 754  * Returns: a #GFileAttributeStatus for the given @attribute, or
 755  *    %G_FILE_ATTRIBUTE_STATUS_UNSET if the key is invalid.
 756  *
 757  */
 758 GFileAttributeStatus
 759 g_file_info_get_attribute_status (GFileInfo  *info,
 760                                   const char *attribute)
 761 {
 762   GFileAttributeValue *val;
 763
 764   g_return_val_if_fail (G_IS_FILE_INFO (info), 0);
 765   g_return_val_if_fail (attribute != NULL && *attribute != '\0', 0);
 766
 767   val = g_file_info_find_value_by_name (info, attribute);
 768   if (val)
 769     return val->status;
 770
 771   return G_FILE_ATTRIBUTE_STATUS_UNSET;
 772 }
 773
 774 /**
 775  * g_file_info_set_attribute_status:
 776  * @info: a #GFileInfo
 777  * @attribute: a file attribute key
 778  * @status: a #GFileAttributeStatus
 779  *
 780  * Sets the attribute status for an attribute key. This is only
 781  * needed by external code that implement g_file_set_attributes_from_info()
 782  * or similar functions.
 783  *
 784  * The attribute must exist in @info for this to work. Otherwise %FALSE
 785  * is returned and @info is unchanged.
 786  *
 787  * Returns: %TRUE if the status was changed, %FALSE if the key was not set.
 788  *
 789  * Since: 2.22
 790  */
 791 gboolean
 792 g_file_info_set_attribute_status (GFileInfo  *info,
 793                                   const char *attribute,
 794                                   GFileAttributeStatus status)
 795 {
 796   GFileAttributeValue *val;
 797
 798   g_return_val_if_fail (G_IS_FILE_INFO (info), FALSE);
 799   g_return_val_if_fail (attribute != NULL && *attribute != '\0', FALSE);
 800
 801   val = g_file_info_find_value_by_name (info, attribute);
 802   if (val)
 803     {
 804       val->status = status;
 805       return TRUE;
 806     }
 807
 808   return FALSE;
 809 }
 810
 811 GFileAttributeValue *
 812 _g_file_info_get_attribute_value (GFileInfo  *info,
 813                                   const char *attribute)
 814
 815 {
 816   g_return_val_if_fail (G_IS_FILE_INFO (info), NULL);
 817   g_return_val_if_fail (attribute != NULL && *attribute != '\0', NULL);
 818
 819   return g_file_info_find_value_by_name (info, attribute);
 820 }
 821
 822 /**
 823  * g_file_info_get_attribute_as_string:
 824  * @info: a #GFileInfo.
 825  * @attribute: a file attribute key.
 826  *
 827  * Gets the value of a attribute, formated as a string.
 828  * This escapes things as needed to make the string valid
 829  * utf8.
 830  *
 831  * Returns: a UTF-8 string associated with the given @attribute.
 832  *    When you're done with the string it must be freed with g_free().
 833  **/
 834 char *
 835 g_file_info_get_attribute_as_string (GFileInfo  *info,
 836                                      const char *attribute)
 837 {
 838   GFileAttributeValue *val;
 839   val = _g_file_info_get_attribute_value (info, attribute);
 840   if (val)
 841     return _g_file_attribute_value_as_string (val);
 842   return NULL;
 843 }
 844
 845
 846 /**
 847  * g_file_info_get_attribute_object:
 848  * @info: a #GFileInfo.
 849  * @attribute: a file attribute key.
 850  *
 851  * Gets the value of a #GObject attribute. If the attribute does
 852  * not contain a #GObject, %NULL will be returned.
 853  *
 854  * Returns: (transfer none): a #GObject associated with the given @attribute, or
 855  * %NULL otherwise.
 856  **/
 857 GObject *
 858 g_file_info_get_attribute_object (GFileInfo  *info,
 859                                   const char *attribute)
 860 {
 861   GFileAttributeValue *value;
 862
 863   g_return_val_if_fail (G_IS_FILE_INFO (info), NULL);
 864   g_return_val_if_fail (attribute != NULL && *attribute != '\0', NULL);
 865
 866   value = g_file_info_find_value_by_name (info, attribute);
 867   return _g_file_attribute_value_get_object (value);
 868 }
 869
 870 /**
 871  * g_file_info_get_attribute_string:
 872  * @info: a #GFileInfo.
 873  * @attribute: a file attribute key.
 874  *
 875  * Gets the value of a string attribute. If the attribute does
 876  * not contain a string, %NULL will be returned.
 877  *
 878  * Returns: the contents of the @attribute value as a UTF-8 string, or
 879  * %NULL otherwise.
 880  **/
 881 const char *
 882 g_file_info_get_attribute_string (GFileInfo  *info,
 883                                   const char *attribute)
 884 {
 885   GFileAttributeValue *value;
 886
 887   g_return_val_if_fail (G_IS_FILE_INFO (info), NULL);
 888   g_return_val_if_fail (attribute != NULL && *attribute != '\0', NULL);
 889
 890   value = g_file_info_find_value_by_name (info, attribute);
 891   return _g_file_attribute_value_get_string (value);
 892 }
 893
 894 /**
 895  * g_file_info_get_attribute_byte_string:
 896  * @info: a #GFileInfo.
 897  * @attribute: a file attribute key.
 898  *
 899  * Gets the value of a byte string attribute. If the attribute does
 900  * not contain a byte string, %NULL will be returned.
 901  *
 902  * Returns: the contents of the @attribute value as a byte string, or
 903  * %NULL otherwise.
 904  **/
 905 const char *
 906 g_file_info_get_attribute_byte_string (GFileInfo  *info,
 907                                        const char *attribute)
 908 {
 909   GFileAttributeValue *value;
 910
 911   g_return_val_if_fail (G_IS_FILE_INFO (info), NULL);
 912   g_return_val_if_fail (attribute != NULL && *attribute != '\0', NULL);
 913
 914   value = g_file_info_find_value_by_name (info, attribute);
 915   return _g_file_attribute_value_get_byte_string (value);
 916 }
 917
 918 /**
 919  * g_file_info_get_attribute_stringv:
 920  * @info: a #GFileInfo.
 921  * @attribute: a file attribute key.
 922  *
 923  * Gets the value of a stringv attribute. If the attribute does
 924  * not contain a stringv, %NULL will be returned.
 925  *
 926  * Returns: (transfer none): the contents of the @attribute value as a stringv, or
 927  * %NULL otherwise. Do not free. These returned strings are UTF-8.
 928  *
 929  * Since: 2.22
 930  **/
 931 char **
 932 g_file_info_get_attribute_stringv (GFileInfo  *info,
 933                                    const char *attribute)
 934 {
 935   GFileAttributeValue *value;
 936
 937   g_return_val_if_fail (G_IS_FILE_INFO (info), NULL);
 938   g_return_val_if_fail (attribute != NULL && *attribute != '\0', NULL);
 939
 940   value = g_file_info_find_value_by_name (info, attribute);
 941   return _g_file_attribute_value_get_stringv (value);
 942 }
 943
 944 /**
 945  * g_file_info_get_attribute_boolean:
 946  * @info: a #GFileInfo.
 947  * @attribute: a file attribute key.
 948  *
 949  * Gets the value of a boolean attribute. If the attribute does not
 950  * contain a boolean value, %FALSE will be returned.
 951  *
 952  * Returns: the boolean value contained within the attribute.
 953  **/
 954 gboolean
 955 g_file_info_get_attribute_boolean (GFileInfo  *info,
 956                                    const char *attribute)
 957 {
 958   GFileAttributeValue *value;
 959
 960   g_return_val_if_fail (G_IS_FILE_INFO (info), FALSE);
 961   g_return_val_if_fail (attribute != NULL && *attribute != '\0', FALSE);
 962
 963   value = g_file_info_find_value_by_name (info, attribute);
 964   return _g_file_attribute_value_get_boolean (value);
 965 }
 966
 967 /**
 968  * g_file_info_get_attribute_uint32:
 969  * @info: a #GFileInfo.
 970  * @attribute: a file attribute key.
 971  *
 972  * Gets an unsigned 32-bit integer contained within the attribute. If the
 973  * attribute does not contain an unsigned 32-bit integer, or is invalid,
 974  * 0 will be returned.
 975  *
 976  * Returns: an unsigned 32-bit integer from the attribute.
 977  **/
 978 guint32
 979 g_file_info_get_attribute_uint32 (GFileInfo  *info,
 980                                   const char *attribute)
 981 {
 982   GFileAttributeValue *value;
 983
 984   g_return_val_if_fail (G_IS_FILE_INFO (info), 0);
 985   g_return_val_if_fail (attribute != NULL && *attribute != '\0', 0);
 986
 987   value = g_file_info_find_value_by_name (info, attribute);
 988   return _g_file_attribute_value_get_uint32 (value);
 989 }
 990
 991 /**
 992  * g_file_info_get_attribute_int32:
 993  * @info: a #GFileInfo.
 994  * @attribute: a file attribute key.
 995  *
 996  * Gets a signed 32-bit integer contained within the attribute. If the
 997  * attribute does not contain a signed 32-bit integer, or is invalid,
 998  * 0 will be returned.
 999  *
1000  * Returns: a signed 32-bit integer from the attribute.
1001  **/
1002 gint32
1003 g_file_info_get_attribute_int32 (GFileInfo  *info,
1004                                  const char *attribute)
1005 {
1006   GFileAttributeValue *value;
1007
1008   g_return_val_if_fail (G_IS_FILE_INFO (info), 0);
1009   g_return_val_if_fail (attribute != NULL && *attribute != '\0', 0);
1010
1011   value = g_file_info_find_value_by_name (info, attribute);
1012   return _g_file_attribute_value_get_int32 (value);
1013 }
1014
1015 /**
1016  * g_file_info_get_attribute_uint64:
1017  * @info: a #GFileInfo.
1018  * @attribute: a file attribute key.
1019  *
1020  * Gets a unsigned 64-bit integer contained within the attribute. If the
1021  * attribute does not contain an unsigned 64-bit integer, or is invalid,
1022  * 0 will be returned.
1023  *
1024  * Returns: a unsigned 64-bit integer from the attribute.
1025  **/
1026 guint64
1027 g_file_info_get_attribute_uint64 (GFileInfo  *info,
1028                                   const char *attribute)
1029 {
1030   GFileAttributeValue *value;
1031
1032   g_return_val_if_fail (G_IS_FILE_INFO (info), 0);
1033   g_return_val_if_fail (attribute != NULL && *attribute != '\0', 0);
1034
1035   value = g_file_info_find_value_by_name (info, attribute);
1036   return _g_file_attribute_value_get_uint64 (value);
1037 }
1038
1039 /**
1040  * g_file_info_get_attribute_int64:
1041  * @info: a #GFileInfo.
1042  * @attribute: a file attribute key.
1043  *
1044  * Gets a signed 64-bit integer contained within the attribute. If the
1045  * attribute does not contain an signed 64-bit integer, or is invalid,
1046  * 0 will be returned.
1047  *
1048  * Returns: a signed 64-bit integer from the attribute.
1049  **/
1050 gint64
1051 g_file_info_get_attribute_int64  (GFileInfo  *info,
1052                                   const char *attribute)
1053 {
1054   GFileAttributeValue *value;
1055
1056   g_return_val_if_fail (G_IS_FILE_INFO (info), 0);
1057   g_return_val_if_fail (attribute != NULL && *attribute != '\0', 0);
1058
1059   value = g_file_info_find_value_by_name (info, attribute);
1060   return _g_file_attribute_value_get_int64 (value);
1061 }
1062
1063 static GFileAttributeValue *
1064 g_file_info_create_value (GFileInfo *info,
1065                           guint32 attr_id)
1066 {
1067   GFileAttribute *attrs;
1068   int i;
1069
1070   if (info->mask != NO_ATTRIBUTE_MASK &&
1071       !_g_file_attribute_matcher_matches_id (info->mask, attr_id))
1072     return NULL;
1073
1074   i = g_file_info_find_place (info, attr_id);
1075
1076   attrs = (GFileAttribute *)info->attributes->data;
1077   if (i < info->attributes->len &&
1078       attrs[i].attribute == attr_id)
1079     return &attrs[i].value;
1080   else
1081     {
1082       GFileAttribute attr = { 0 };
1083       attr.attribute = attr_id;
1084       g_array_insert_val (info->attributes, i, attr);
1085
1086       attrs = (GFileAttribute *)info->attributes->data;
1087       return &attrs[i].value;
1088     }
1089 }
1090
1091 void
1092 _g_file_info_set_attribute_by_id (GFileInfo                 *info,
1093                                   guint32                    attribute,
1094                                   GFileAttributeType         type,
1095                                   gpointer                   value_p)
1096 {
1097   GFileAttributeValue *value;
1098
1099   value = g_file_info_create_value (info, attribute);
1100
1101   if (value)
1102     _g_file_attribute_value_set_from_pointer (value, type, value_p, TRUE);
1103 }
1104
1105 /**
1106  * g_file_info_set_attribute:
1107  * @info: a #GFileInfo.
1108  * @attribute: a file attribute key.
1109  * @type: a #GFileAttributeType
1110  * @value_p: pointer to the value
1111  *
1112  * Sets the @attribute to contain the given value, if possible.
1113  **/
1114 void
1115 g_file_info_set_attribute (GFileInfo                 *info,
1116                            const char                *attribute,
1117                            GFileAttributeType         type,
1118                            gpointer                   value_p)
1119 {
1120   g_return_if_fail (G_IS_FILE_INFO (info));
1121   g_return_if_fail (attribute != NULL && *attribute != '\0');
1122
1123   _g_file_info_set_attribute_by_id (info, lookup_attribute (attribute), type, value_p);
1124 }
1125
1126 void
1127 _g_file_info_set_attribute_object_by_id (GFileInfo *info,
1128                                          guint32    attribute,
1129                                          GObject   *attr_value)
1130 {
1131   GFileAttributeValue *value;
1132
1133   value = g_file_info_create_value (info, attribute);
1134   if (value)
1135     _g_file_attribute_value_set_object (value, attr_value);
1136 }
1137
1138 /**
1139  * g_file_info_set_attribute_object:
1140  * @info: a #GFileInfo.
1141  * @attribute: a file attribute key.
1142  * @attr_value: a #GObject.
1143  *
1144  * Sets the @attribute to contain the given @attr_value,
1145  * if possible.
1146  **/
1147 void
1148 g_file_info_set_attribute_object (GFileInfo  *info,
1149                                   const char *attribute,
1150                                   GObject    *attr_value)
1151 {
1152   g_return_if_fail (G_IS_FILE_INFO (info));
1153   g_return_if_fail (attribute != NULL && *attribute != '\0');
1154   g_return_if_fail (G_IS_OBJECT (attr_value));
1155
1156   _g_file_info_set_attribute_object_by_id (info,
1157                                            lookup_attribute (attribute),
1158                                            attr_value);
1159 }
1160
1161 void
1162 _g_file_info_set_attribute_stringv_by_id (GFileInfo *info,
1163                                           guint32    attribute,
1164                                           char     **attr_value)
1165 {
1166   GFileAttributeValue *value;
1167
1168   value = g_file_info_create_value (info, attribute);
1169   if (value)
1170     _g_file_attribute_value_set_stringv (value, attr_value);
1171 }
1172
1173 /**
1174  * g_file_info_set_attribute_stringv:
1175  * @info: a #GFileInfo.
1176  * @attribute: a file attribute key
1177  * @attr_value: (array) (element-type utf8): a %NULL terminated array of UTF-8 strings.
1178  *
1179  * Sets the @attribute to contain the given @attr_value,
1180  * if possible.
1181  *
1182  * Sinze: 2.22
1183  **/
1184 void
1185 g_file_info_set_attribute_stringv (GFileInfo  *info,
1186                                    const char *attribute,
1187                                    char      **attr_value)
1188 {
1189   g_return_if_fail (G_IS_FILE_INFO (info));
1190   g_return_if_fail (attribute != NULL && *attribute != '\0');
1191   g_return_if_fail (attr_value != NULL);
1192
1193   _g_file_info_set_attribute_stringv_by_id (info,
1194                                             lookup_attribute (attribute),
1195                                             attr_value);
1196 }
1197
1198 void
1199 _g_file_info_set_attribute_string_by_id (GFileInfo  *info,
1200                                          guint32     attribute,
1201                                          const char *attr_value)
1202 {
1203   GFileAttributeValue *value;
1204
1205   value = g_file_info_create_value (info, attribute);
1206   if (value)
1207     _g_file_attribute_value_set_string (value, attr_value);
1208 }
1209
1210 /**
1211  * g_file_info_set_attribute_string:
1212  * @info: a #GFileInfo.
1213  * @attribute: a file attribute key.
1214  * @attr_value: a UTF-8 string.
1215  *
1216  * Sets the @attribute to contain the given @attr_value,
1217  * if possible.
1218  **/
1219 void
1220 g_file_info_set_attribute_string (GFileInfo  *info,
1221                                   const char *attribute,
1222                                   const char *attr_value)
1223 {
1224   g_return_if_fail (G_IS_FILE_INFO (info));
1225   g_return_if_fail (attribute != NULL && *attribute != '\0');
1226   g_return_if_fail (attr_value != NULL);
1227
1228   _g_file_info_set_attribute_string_by_id (info,
1229                                            lookup_attribute (attribute),
1230                                            attr_value);
1231 }
1232
1233 void
1234 _g_file_info_set_attribute_byte_string_by_id (GFileInfo  *info,
1235                                               guint32     attribute,
1236                                               const char *attr_value)
1237 {
1238   GFileAttributeValue *value;
1239
1240   value = g_file_info_create_value (info, attribute);
1241   if (value)
1242     _g_file_attribute_value_set_byte_string (value, attr_value);
1243 }
1244
1245 /**
1246  * g_file_info_set_attribute_byte_string:
1247  * @info: a #GFileInfo.
1248  * @attribute: a file attribute key.
1249  * @attr_value: a byte string.
1250  *
1251  * Sets the @attribute to contain the given @attr_value,
1252  * if possible.
1253  **/
1254 void
1255 g_file_info_set_attribute_byte_string (GFileInfo  *info,
1256                                        const char *attribute,
1257                                        const char *attr_value)
1258 {
1259   g_return_if_fail (G_IS_FILE_INFO (info));
1260   g_return_if_fail (attribute != NULL && *attribute != '\0');
1261   g_return_if_fail (attr_value != NULL);
1262
1263   _g_file_info_set_attribute_byte_string_by_id (info,
1264                                                 lookup_attribute (attribute),
1265                                                 attr_value);
1266 }
1267
1268 void
1269 _g_file_info_set_attribute_boolean_by_id (GFileInfo *info,
1270                                           guint32    attribute,
1271                                           gboolean   attr_value)
1272 {
1273   GFileAttributeValue *value;
1274
1275   value = g_file_info_create_value (info, attribute);
1276   if (value)
1277     _g_file_attribute_value_set_boolean (value, attr_value);
1278 }
1279
1280 /**
1281  * g_file_info_set_attribute_boolean:
1282  * @info: a #GFileInfo.
1283  * @attribute: a file attribute key.
1284  * @attr_value: a boolean value.
1285  *
1286  * Sets the @attribute to contain the given @attr_value,
1287  * if possible.
1288  **/
1289 void
1290 g_file_info_set_attribute_boolean (GFileInfo  *info,
1291                                    const char *attribute,
1292                                    gboolean    attr_value)
1293 {
1294   g_return_if_fail (G_IS_FILE_INFO (info));
1295   g_return_if_fail (attribute != NULL && *attribute != '\0');
1296
1297   _g_file_info_set_attribute_boolean_by_id (info,
1298                                             lookup_attribute (attribute),
1299                                             attr_value);
1300 }
1301
1302 void
1303 _g_file_info_set_attribute_uint32_by_id (GFileInfo *info,
1304                                          guint32    attribute,
1305                                          guint32    attr_value)
1306 {
1307   GFileAttributeValue *value;
1308
1309   value = g_file_info_create_value (info, attribute);
1310   if (value)
1311     _g_file_attribute_value_set_uint32 (value, attr_value);
1312 }
1313
1314 /**
1315  * g_file_info_set_attribute_uint32:
1316  * @info: a #GFileInfo.
1317  * @attribute: a file attribute key.
1318  * @attr_value: an unsigned 32-bit integer.
1319  *
1320  * Sets the @attribute to contain the given @attr_value,
1321  * if possible.
1322  **/
1323 void
1324 g_file_info_set_attribute_uint32 (GFileInfo  *info,
1325                                   const char *attribute,
1326                                   guint32     attr_value)
1327 {
1328   g_return_if_fail (G_IS_FILE_INFO (info));
1329   g_return_if_fail (attribute != NULL && *attribute != '\0');
1330
1331   _g_file_info_set_attribute_uint32_by_id (info,
1332                                            lookup_attribute (attribute),
1333                                            attr_value);
1334 }
1335
1336 void
1337 _g_file_info_set_attribute_int32_by_id (GFileInfo *info,
1338                                         guint32    attribute,
1339                                         gint32     attr_value)
1340 {
1341   GFileAttributeValue *value;
1342
1343   value = g_file_info_create_value (info, attribute);
1344   if (value)
1345     _g_file_attribute_value_set_int32 (value, attr_value);
1346 }
1347
1348 /**
1349  * g_file_info_set_attribute_int32:
1350  * @info: a #GFileInfo.
1351  * @attribute: a file attribute key.
1352  * @attr_value: a signed 32-bit integer
1353  *
1354  * Sets the @attribute to contain the given @attr_value,
1355  * if possible.
1356  **/
1357 void
1358 g_file_info_set_attribute_int32 (GFileInfo  *info,
1359                                  const char *attribute,
1360                                  gint32      attr_value)
1361 {
1362   g_return_if_fail (G_IS_FILE_INFO (info));
1363   g_return_if_fail (attribute != NULL && *attribute != '\0');
1364
1365   _g_file_info_set_attribute_int32_by_id (info,
1366                                           lookup_attribute (attribute),
1367                                           attr_value);
1368 }
1369
1370 void
1371 _g_file_info_set_attribute_uint64_by_id (GFileInfo *info,
1372                                          guint32    attribute,
1373                                          guint64    attr_value)
1374 {
1375   GFileAttributeValue *value;
1376
1377   value = g_file_info_create_value (info, attribute);
1378   if (value)
1379     _g_file_attribute_value_set_uint64 (value, attr_value);
1380 }
1381
1382 /**
1383  * g_file_info_set_attribute_uint64:
1384  * @info: a #GFileInfo.
1385  * @attribute: a file attribute key.
1386  * @attr_value: an unsigned 64-bit integer.
1387  *
1388  * Sets the @attribute to contain the given @attr_value,
1389  * if possible.
1390  **/
1391 void
1392 g_file_info_set_attribute_uint64 (GFileInfo  *info,
1393                                   const char *attribute,
1394                                   guint64     attr_value)
1395 {
1396   g_return_if_fail (G_IS_FILE_INFO (info));
1397   g_return_if_fail (attribute != NULL && *attribute != '\0');
1398
1399   _g_file_info_set_attribute_uint64_by_id (info,
1400                                            lookup_attribute (attribute),
1401                                            attr_value);
1402 }
1403
1404 void
1405 _g_file_info_set_attribute_int64_by_id (GFileInfo *info,
1406                                         guint32    attribute,
1407                                         gint64     attr_value)
1408 {
1409   GFileAttributeValue *value;
1410
1411   value = g_file_info_create_value (info, attribute);
1412   if (value)
1413     _g_file_attribute_value_set_int64 (value, attr_value);
1414 }
1415
1416 /**
1417  * g_file_info_set_attribute_int64:
1418  * @info: a #GFileInfo.
1419  * @attribute: attribute name to set.
1420  * @attr_value: int64 value to set attribute to.
1421  *
1422  * Sets the @attribute to contain the given @attr_value,
1423  * if possible.
1424  *
1425  **/
1426 void
1427 g_file_info_set_attribute_int64  (GFileInfo  *info,
1428                                   const char *attribute,
1429                                   gint64      attr_value)
1430 {
1431   g_return_if_fail (G_IS_FILE_INFO (info));
1432   g_return_if_fail (attribute != NULL && *attribute != '\0');
1433
1434   _g_file_info_set_attribute_int64_by_id (info,
1435                                           lookup_attribute (attribute),
1436                                           attr_value);
1437 }
1438
1439 /* Helper getters */
1440 /**
1441  * g_file_info_get_file_type:
1442  * @info: a #GFileInfo.
1443  *
1444  * Gets a file's type (whether it is a regular file, symlink, etc).
1445  * This is different from the file's content type, see g_file_info_get_content_type().
1446  *
1447  * Returns: a #GFileType for the given file.
1448  **/
1449 GFileType
1450 g_file_info_get_file_type (GFileInfo *info)
1451 {
1452   static guint32 attr = 0;
1453   GFileAttributeValue *value;
1454
1455   g_return_val_if_fail (G_IS_FILE_INFO (info), G_FILE_TYPE_UNKNOWN);
1456
1457   if (attr == 0)
1458     attr = lookup_attribute (G_FILE_ATTRIBUTE_STANDARD_TYPE);
1459
1460   value = g_file_info_find_value (info, attr);
1461   return (GFileType)_g_file_attribute_value_get_uint32 (value);
1462 }
1463
1464 /**
1465  * g_file_info_get_is_hidden:
1466  * @info: a #GFileInfo.
1467  *
1468  * Checks if a file is hidden.
1469  *
1470  * Returns: %TRUE if the file is a hidden file, %FALSE otherwise.
1471  **/
1472 gboolean
1473 g_file_info_get_is_hidden (GFileInfo *info)
1474 {
1475   static guint32 attr = 0;
1476   GFileAttributeValue *value;
1477
1478   g_return_val_if_fail (G_IS_FILE_INFO (info), FALSE);
1479
1480   if (attr == 0)
1481     attr = lookup_attribute (G_FILE_ATTRIBUTE_STANDARD_IS_HIDDEN);
1482
1483   value = g_file_info_find_value (info, attr);
1484   return (GFileType)_g_file_attribute_value_get_boolean (value);
1485 }
1486
1487 /**
1488  * g_file_info_get_is_backup:
1489  * @info: a #GFileInfo.
1490  *
1491  * Checks if a file is a backup file.
1492  *
1493  * Returns: %TRUE if file is a backup file, %FALSE otherwise.
1494  **/
1495 gboolean
1496 g_file_info_get_is_backup (GFileInfo *info)
1497 {
1498   static guint32 attr = 0;
1499   GFileAttributeValue *value;
1500
1501   g_return_val_if_fail (G_IS_FILE_INFO (info), FALSE);
1502
1503   if (attr == 0)
1504     attr = lookup_attribute (G_FILE_ATTRIBUTE_STANDARD_IS_BACKUP);
1505
1506   value = g_file_info_find_value (info, attr);
1507   return (GFileType)_g_file_attribute_value_get_boolean (value);
1508 }
1509
1510 /**
1511  * g_file_info_get_is_symlink:
1512  * @info: a #GFileInfo.
1513  *
1514  * Checks if a file is a symlink.
1515  *
1516  * Returns: %TRUE if the given @info is a symlink.
1517  **/
1518 gboolean
1519 g_file_info_get_is_symlink (GFileInfo *info)
1520 {
1521   static guint32 attr = 0;
1522   GFileAttributeValue *value;
1523
1524   g_return_val_if_fail (G_IS_FILE_INFO (info), FALSE);
1525
1526   if (attr == 0)
1527     attr = lookup_attribute (G_FILE_ATTRIBUTE_STANDARD_IS_SYMLINK);
1528
1529   value = g_file_info_find_value (info, attr);
1530   return (GFileType)_g_file_attribute_value_get_boolean (value);
1531 }
1532
1533 /**
1534  * g_file_info_get_name:
1535  * @info: a #GFileInfo.
1536  *
1537  * Gets the name for a file.
1538  *
1539  * Returns: a string containing the file name.
1540  **/
1541 const char *
1542 g_file_info_get_name (GFileInfo *info)
1543 {
1544   static guint32 attr = 0;
1545   GFileAttributeValue *value;
1546
1547   g_return_val_if_fail (G_IS_FILE_INFO (info), NULL);
1548
1549   if (attr == 0)
1550     attr = lookup_attribute (G_FILE_ATTRIBUTE_STANDARD_NAME);
1551
1552   value = g_file_info_find_value (info, attr);
1553   return _g_file_attribute_value_get_byte_string (value);
1554 }
1555
1556 /**
1557  * g_file_info_get_display_name:
1558  * @info: a #GFileInfo.
1559  *
1560  * Gets a display name for a file.
1561  *
1562  * Returns: a string containing the display name.
1563  **/
1564 const char *
1565 g_file_info_get_display_name (GFileInfo *info)
1566 {
1567   static guint32 attr = 0;
1568   GFileAttributeValue *value;
1569
1570   g_return_val_if_fail (G_IS_FILE_INFO (info), NULL);
1571
1572   if (attr == 0)
1573     attr = lookup_attribute (G_FILE_ATTRIBUTE_STANDARD_DISPLAY_NAME);
1574
1575   value = g_file_info_find_value (info, attr);
1576   return _g_file_attribute_value_get_string (value);
1577 }
1578
1579 /**
1580  * g_file_info_get_edit_name:
1581  * @info: a #GFileInfo.
1582  *
1583  * Gets the edit name for a file.
1584  *
1585  * Returns: a string containing the edit name.
1586  **/
1587 const char *
1588 g_file_info_get_edit_name (GFileInfo *info)
1589 {
1590   static guint32 attr = 0;
1591   GFileAttributeValue *value;
1592
1593   g_return_val_if_fail (G_IS_FILE_INFO (info), NULL);
1594
1595   if (attr == 0)
1596     attr = lookup_attribute (G_FILE_ATTRIBUTE_STANDARD_EDIT_NAME);
1597
1598   value = g_file_info_find_value (info, attr);
1599   return _g_file_attribute_value_get_string (value);
1600 }
1601
1602 /**
1603  * g_file_info_get_icon:
1604  * @info: a #GFileInfo.
1605  *
1606  * Gets the icon for a file.
1607  *
1608  * Returns: (transfer none): #GIcon for the given @info.
1609  **/
1610 GIcon *
1611 g_file_info_get_icon (GFileInfo *info)
1612 {
1613   static guint32 attr = 0;
1614   GFileAttributeValue *value;
1615   GObject *obj;
1616
1617   g_return_val_if_fail (G_IS_FILE_INFO (info), NULL);
1618
1619   if (attr == 0)
1620     attr = lookup_attribute (G_FILE_ATTRIBUTE_STANDARD_ICON);
1621
1622   value = g_file_info_find_value (info, attr);
1623   obj = _g_file_attribute_value_get_object (value);
1624   if (G_IS_ICON (obj))
1625     return G_ICON (obj);
1626   return NULL;
1627 }
1628
1629 /**
1630  * g_file_info_get_content_type:
1631  * @info: a #GFileInfo.
1632  *
1633  * Gets the file's content type.
1634  *
1635  * Returns: a string containing the file's content type.
1636  **/
1637 const char *
1638 g_file_info_get_content_type (GFileInfo *info)
1639 {
1640   static guint32 attr = 0;
1641   GFileAttributeValue *value;
1642
1643   g_return_val_if_fail (G_IS_FILE_INFO (info), NULL);
1644
1645   if (attr == 0)
1646     attr = lookup_attribute (G_FILE_ATTRIBUTE_STANDARD_CONTENT_TYPE);
1647
1648   value = g_file_info_find_value (info, attr);
1649   return _g_file_attribute_value_get_string (value);
1650 }
1651
1652 /**
1653  * g_file_info_get_size:
1654  * @info: a #GFileInfo.
1655  *
1656  * Gets the file's size.
1657  *
1658  * Returns: a #goffset containing the file's size.
1659  **/
1660 goffset
1661 g_file_info_get_size (GFileInfo *info)
1662 {
1663   static guint32 attr = 0;
1664   GFileAttributeValue *value;
1665
1666   g_return_val_if_fail (G_IS_FILE_INFO (info), (goffset) 0);
1667
1668   if (attr == 0)
1669     attr = lookup_attribute (G_FILE_ATTRIBUTE_STANDARD_SIZE);
1670
1671   value = g_file_info_find_value (info, attr);
1672   return (goffset) _g_file_attribute_value_get_uint64 (value);
1673 }
1674
1675 /**
1676  * g_file_info_get_modification_time:
1677  * @info: a #GFileInfo.
1678  * @result: (out caller-allocates): a #GTimeVal.
1679  *
1680  * Gets the modification time of the current @info and sets it
1681  * in @result.
1682  **/
1683 void
1684 g_file_info_get_modification_time (GFileInfo *info,
1685                                    GTimeVal  *result)
1686 {
1687   static guint32 attr_mtime = 0, attr_mtime_usec;
1688   GFileAttributeValue *value;
1689
1690   g_return_if_fail (G_IS_FILE_INFO (info));
1691   g_return_if_fail (result != NULL);
1692
1693   if (attr_mtime == 0)
1694     {
1695       attr_mtime = lookup_attribute (G_FILE_ATTRIBUTE_TIME_MODIFIED);
1696       attr_mtime_usec = lookup_attribute (G_FILE_ATTRIBUTE_TIME_MODIFIED_USEC);
1697     }
1698
1699   value = g_file_info_find_value (info, attr_mtime);
1700   result->tv_sec = _g_file_attribute_value_get_uint64 (value);
1701   value = g_file_info_find_value (info, attr_mtime_usec);
1702   result->tv_usec = _g_file_attribute_value_get_uint32 (value);
1703 }
1704
1705 /**
1706  * g_file_info_get_symlink_target:
1707  * @info: a #GFileInfo.
1708  *
1709  * Gets the symlink target for a given #GFileInfo.
1710  *
1711  * Returns: a string containing the symlink target.
1712  **/
1713 const char *
1714 g_file_info_get_symlink_target (GFileInfo *info)
1715 {
1716   static guint32 attr = 0;
1717   GFileAttributeValue *value;
1718
1719   g_return_val_if_fail (G_IS_FILE_INFO (info), NULL);
1720
1721   if (attr == 0)
1722     attr = lookup_attribute (G_FILE_ATTRIBUTE_STANDARD_SYMLINK_TARGET);
1723
1724   value = g_file_info_find_value (info, attr);
1725   return _g_file_attribute_value_get_byte_string (value);
1726 }
1727
1728 /**
1729  * g_file_info_get_etag:
1730  * @info: a #GFileInfo.
1731  *
1732  * Gets the <link linkend="gfile-etag">entity tag</link> for a given
1733  * #GFileInfo. See %G_FILE_ATTRIBUTE_ETAG_VALUE.
1734  *
1735  * Returns: a string containing the value of the "etag:value" attribute.
1736  **/
1737 const char *
1738 g_file_info_get_etag (GFileInfo *info)
1739 {
1740   static guint32 attr = 0;
1741   GFileAttributeValue *value;
1742
1743   g_return_val_if_fail (G_IS_FILE_INFO (info), NULL);
1744
1745   if (attr == 0)
1746     attr = lookup_attribute (G_FILE_ATTRIBUTE_ETAG_VALUE);
1747
1748   value = g_file_info_find_value (info, attr);
1749   return _g_file_attribute_value_get_string (value);
1750 }
1751
1752 /**
1753  * g_file_info_get_sort_order:
1754  * @info: a #GFileInfo.
1755  *
1756  * Gets the value of the sort_order attribute from the #GFileInfo.
1757  * See %G_FILE_ATTRIBUTE_STANDARD_SORT_ORDER.
1758  *
1759  * Returns: a #gint32 containing the value of the "standard::sort_order" attribute.
1760  **/
1761 gint32
1762 g_file_info_get_sort_order (GFileInfo *info)
1763 {
1764   static guint32 attr = 0;
1765   GFileAttributeValue *value;
1766
1767   g_return_val_if_fail (G_IS_FILE_INFO (info), 0);
1768
1769   if (attr == 0)
1770     attr = lookup_attribute (G_FILE_ATTRIBUTE_STANDARD_SORT_ORDER);
1771
1772   value = g_file_info_find_value (info, attr);
1773   return _g_file_attribute_value_get_int32 (value);
1774 }
1775
1776 /* Helper setters: */
1777 /**
1778  * g_file_info_set_file_type:
1779  * @info: a #GFileInfo.
1780  * @type: a #GFileType.
1781  *
1782  * Sets the file type in a #GFileInfo to @type.
1783  * See %G_FILE_ATTRIBUTE_STANDARD_TYPE.
1784  **/
1785 void
1786 g_file_info_set_file_type (GFileInfo *info,
1787                            GFileType  type)
1788 {
1789   static guint32 attr = 0;
1790   GFileAttributeValue *value;
1791
1792   g_return_if_fail (G_IS_FILE_INFO (info));
1793
1794   if (attr == 0)
1795     attr = lookup_attribute (G_FILE_ATTRIBUTE_STANDARD_TYPE);
1796
1797   value = g_file_info_create_value (info, attr);
1798   if (value)
1799     _g_file_attribute_value_set_uint32 (value, type);
1800 }
1801
1802 /**
1803  * g_file_info_set_is_hidden:
1804  * @info: a #GFileInfo.
1805  * @is_hidden: a #gboolean.
1806  *
1807  * Sets the "is_hidden" attribute in a #GFileInfo according to @is_symlink.
1808  * See %G_FILE_ATTRIBUTE_STANDARD_IS_HIDDEN.
1809  **/
1810 void
1811 g_file_info_set_is_hidden (GFileInfo *info,
1812                            gboolean   is_hidden)
1813 {
1814   static guint32 attr = 0;
1815   GFileAttributeValue *value;
1816
1817   g_return_if_fail (G_IS_FILE_INFO (info));
1818
1819   if (attr == 0)
1820     attr = lookup_attribute (G_FILE_ATTRIBUTE_STANDARD_IS_HIDDEN);
1821
1822   value = g_file_info_create_value (info, attr);
1823   if (value)
1824     _g_file_attribute_value_set_boolean (value, is_hidden);
1825 }
1826
1827 /**
1828  * g_file_info_set_is_symlink:
1829  * @info: a #GFileInfo.
1830  * @is_symlink: a #gboolean.
1831  *
1832  * Sets the "is_symlink" attribute in a #GFileInfo according to @is_symlink.
1833  * See %G_FILE_ATTRIBUTE_STANDARD_IS_SYMLINK.
1834  **/
1835 void
1836 g_file_info_set_is_symlink (GFileInfo *info,
1837                             gboolean   is_symlink)
1838 {
1839   static guint32 attr = 0;
1840   GFileAttributeValue *value;
1841
1842   g_return_if_fail (G_IS_FILE_INFO (info));
1843
1844   if (attr == 0)
1845     attr = lookup_attribute (G_FILE_ATTRIBUTE_STANDARD_IS_SYMLINK);
1846
1847   value = g_file_info_create_value (info, attr);
1848   if (value)
1849     _g_file_attribute_value_set_boolean (value, is_symlink);
1850 }
1851
1852 /**
1853  * g_file_info_set_name:
1854  * @info: a #GFileInfo.
1855  * @name: a string containing a name.
1856  *
1857  * Sets the name attribute for the current #GFileInfo.
1858  * See %G_FILE_ATTRIBUTE_STANDARD_NAME.
1859  **/
1860 void
1861 g_file_info_set_name (GFileInfo  *info,
1862                       const char *name)
1863 {
1864   static guint32 attr = 0;
1865   GFileAttributeValue *value;
1866
1867   g_return_if_fail (G_IS_FILE_INFO (info));
1868   g_return_if_fail (name != NULL);
1869
1870   if (attr == 0)
1871     attr = lookup_attribute (G_FILE_ATTRIBUTE_STANDARD_NAME);
1872
1873   value = g_file_info_create_value (info, attr);
1874   if (value)
1875     _g_file_attribute_value_set_byte_string (value, name);
1876 }
1877
1878 /**
1879  * g_file_info_set_display_name:
1880  * @info: a #GFileInfo.
1881  * @display_name: a string containing a display name.
1882  *
1883  * Sets the display name for the current #GFileInfo.
1884  * See %G_FILE_ATTRIBUTE_STANDARD_DISPLAY_NAME.
1885  **/
1886 void
1887 g_file_info_set_display_name (GFileInfo  *info,
1888                               const char *display_name)
1889 {
1890   static guint32 attr = 0;
1891   GFileAttributeValue *value;
1892
1893   g_return_if_fail (G_IS_FILE_INFO (info));
1894   g_return_if_fail (display_name != NULL);
1895
1896   if (attr == 0)
1897     attr = lookup_attribute (G_FILE_ATTRIBUTE_STANDARD_DISPLAY_NAME);
1898
1899   value = g_file_info_create_value (info, attr);
1900   if (value)
1901     _g_file_attribute_value_set_string (value, display_name);
1902 }
1903
1904 /**
1905  * g_file_info_set_edit_name:
1906  * @info: a #GFileInfo.
1907  * @edit_name: a string containing an edit name.
1908  *
1909  * Sets the edit name for the current file.
1910  * See %G_FILE_ATTRIBUTE_STANDARD_EDIT_NAME.
1911  **/
1912 void
1913 g_file_info_set_edit_name (GFileInfo  *info,
1914                            const char *edit_name)
1915 {
1916   static guint32 attr = 0;
1917   GFileAttributeValue *value;
1918
1919   g_return_if_fail (G_IS_FILE_INFO (info));
1920   g_return_if_fail (edit_name != NULL);
1921
1922   if (attr == 0)
1923     attr = lookup_attribute (G_FILE_ATTRIBUTE_STANDARD_EDIT_NAME);
1924
1925   value = g_file_info_create_value (info, attr);
1926   if (value)
1927     _g_file_attribute_value_set_string (value, edit_name);
1928 }
1929
1930 /**
1931  * g_file_info_set_icon:
1932  * @info: a #GFileInfo.
1933  * @icon: a #GIcon.
1934  *
1935  * Sets the icon for a given #GFileInfo.
1936  * See %G_FILE_ATTRIBUTE_STANDARD_ICON.
1937  **/
1938 void
1939 g_file_info_set_icon (GFileInfo *info,
1940                       GIcon     *icon)
1941 {
1942   static guint32 attr = 0;
1943   GFileAttributeValue *value;
1944
1945   g_return_if_fail (G_IS_FILE_INFO (info));
1946   g_return_if_fail (G_IS_ICON (icon));
1947
1948   if (attr == 0)
1949     attr = lookup_attribute (G_FILE_ATTRIBUTE_STANDARD_ICON);
1950
1951   value = g_file_info_create_value (info, attr);
1952   if (value)
1953     _g_file_attribute_value_set_object (value, G_OBJECT (icon));
1954 }
1955
1956 /**
1957  * g_file_info_set_content_type:
1958  * @info: a #GFileInfo.
1959  * @content_type: a content type. See <link linkend="gio-GContentType">GContentType</link>.
1960  *
1961  * Sets the content type attribute for a given #GFileInfo.
1962  * See %G_FILE_ATTRIBUTE_STANDARD_CONTENT_TYPE.
1963  **/
1964 void
1965 g_file_info_set_content_type (GFileInfo  *info,
1966                               const char *content_type)
1967 {
1968   static guint32 attr = 0;
1969   GFileAttributeValue *value;
1970
1971   g_return_if_fail (G_IS_FILE_INFO (info));
1972   g_return_if_fail (content_type != NULL);
1973
1974   if (attr == 0)
1975     attr = lookup_attribute (G_FILE_ATTRIBUTE_STANDARD_CONTENT_TYPE);
1976
1977   value = g_file_info_create_value (info, attr);
1978   if (value)
1979     _g_file_attribute_value_set_string (value, content_type);
1980 }
1981
1982 /**
1983  * g_file_info_set_size:
1984  * @info: a #GFileInfo.
1985  * @size: a #goffset containing the file's size.
1986  *
1987  * Sets the %G_FILE_ATTRIBUTE_STANDARD_SIZE attribute in the file info
1988  * to the given size.
1989  **/
1990 void
1991 g_file_info_set_size (GFileInfo *info,
1992                       goffset    size)
1993 {
1994   static guint32 attr = 0;
1995   GFileAttributeValue *value;
1996
1997   g_return_if_fail (G_IS_FILE_INFO (info));
1998
1999   if (attr == 0)
2000     attr = lookup_attribute (G_FILE_ATTRIBUTE_STANDARD_SIZE);
2001
2002   value = g_file_info_create_value (info, attr);
2003   if (value)
2004     _g_file_attribute_value_set_uint64 (value, size);
2005 }
2006
2007 /**
2008  * g_file_info_set_modification_time
2009  * @info: a #GFileInfo.
2010  * @mtime: a #GTimeVal.
2011  *
2012  * Sets the %G_FILE_ATTRIBUTE_TIME_MODIFIED attribute in the file
2013  * info to the given time value.
2014  **/
2015 void
2016 g_file_info_set_modification_time (GFileInfo *info,
2017                                    GTimeVal  *mtime)
2018 {
2019   static guint32 attr_mtime = 0, attr_mtime_usec;
2020   GFileAttributeValue *value;
2021
2022   g_return_if_fail (G_IS_FILE_INFO (info));
2023   g_return_if_fail (mtime != NULL);
2024
2025   if (attr_mtime == 0)
2026     {
2027       attr_mtime = lookup_attribute (G_FILE_ATTRIBUTE_TIME_MODIFIED);
2028       attr_mtime_usec = lookup_attribute (G_FILE_ATTRIBUTE_TIME_MODIFIED_USEC);
2029     }
2030
2031   value = g_file_info_create_value (info, attr_mtime);
2032   if (value)
2033     _g_file_attribute_value_set_uint64 (value, mtime->tv_sec);
2034   value = g_file_info_create_value (info, attr_mtime_usec);
2035   if (value)
2036     _g_file_attribute_value_set_uint32 (value, mtime->tv_usec);
2037 }
2038
2039 /**
2040  * g_file_info_set_symlink_target:
2041  * @info: a #GFileInfo.
2042  * @symlink_target: a static string containing a path to a symlink target.
2043  *
2044  * Sets the %G_FILE_ATTRIBUTE_STANDARD_SYMLINK_TARGET attribute in the file info
2045  * to the given symlink target.
2046  **/
2047 void
2048 g_file_info_set_symlink_target (GFileInfo  *info,
2049                                 const char *symlink_target)
2050 {
2051   static guint32 attr = 0;
2052   GFileAttributeValue *value;
2053
2054   g_return_if_fail (G_IS_FILE_INFO (info));
2055   g_return_if_fail (symlink_target != NULL);
2056
2057   if (attr == 0)
2058     attr = lookup_attribute (G_FILE_ATTRIBUTE_STANDARD_SYMLINK_TARGET);
2059
2060   value = g_file_info_create_value (info, attr);
2061   if (value)
2062     _g_file_attribute_value_set_byte_string (value, symlink_target);
2063 }
2064
2065 /**
2066  * g_file_info_set_sort_order:
2067  * @info: a #GFileInfo.
2068  * @sort_order: a sort order integer.
2069  *
2070  * Sets the sort order attribute in the file info structure. See
2071  * %G_FILE_ATTRIBUTE_STANDARD_SORT_ORDER.
2072  **/
2073 void
2074 g_file_info_set_sort_order (GFileInfo *info,
2075                             gint32     sort_order)
2076 {
2077   static guint32 attr = 0;
2078   GFileAttributeValue *value;
2079
2080   g_return_if_fail (G_IS_FILE_INFO (info));
2081
2082   if (attr == 0)
2083     attr = lookup_attribute (G_FILE_ATTRIBUTE_STANDARD_SORT_ORDER);
2084
2085   value = g_file_info_create_value (info, attr);
2086   if (value)
2087     _g_file_attribute_value_set_int32 (value, sort_order);
2088 }
2089
2090
2091 typedef struct {
2092   guint32 id;
2093   guint32 mask;
2094 } SubMatcher;
2095
2096 struct _GFileAttributeMatcher {
2097   gboolean all;
2098   gint ref;
2099
2100   GArray *sub_matchers;
2101
2102   /* Interator */
2103   guint32 iterator_ns;
2104   gint iterator_pos;
2105 };
2106
2107 G_DEFINE_BOXED_TYPE (GFileAttributeMatcher, g_file_attribute_matcher,
2108                      g_file_attribute_matcher_ref,
2109                      g_file_attribute_matcher_unref)
2110
2111 static gint
2112 compare_sub_matchers (gconstpointer a,
2113                       gconstpointer b)
2114 {
2115   const SubMatcher *suba = a;
2116   const SubMatcher *subb = b;
2117   int diff;
2118
2119   diff = suba->id - subb->id;
2120
2121   if (diff)
2122     return diff;
2123
2124   return suba->mask - subb->mask;
2125 }
2126
2127 static gboolean
2128 sub_matcher_matches (SubMatcher *matcher,
2129                      SubMatcher *submatcher)
2130 {
2131   if ((matcher->mask & submatcher->mask) != matcher->mask)
2132     return FALSE;
2133
2134   return matcher->id == (submatcher->id & matcher->mask);
2135 }
2136
2137 /* Call this function after modifying a matcher.
2138  * It will ensure all the invariants other functions rely on.
2139  */
2140 static GFileAttributeMatcher *
2141 matcher_optimize (GFileAttributeMatcher *matcher)
2142 {
2143   SubMatcher *submatcher, *compare;
2144   guint i, j;
2145
2146   /* remove sub_matchers if we match everything anyway */
2147   if (matcher->all)
2148     {
2149       if (matcher->sub_matchers)
2150         {
2151           g_array_free (matcher->sub_matchers, TRUE);
2152           matcher->sub_matchers = NULL;
2153         }
2154       return matcher;
2155     }
2156
2157   if (matcher->sub_matchers->len == 0)
2158     {
2159       g_file_attribute_matcher_unref (matcher);
2160       return NULL;
2161     }
2162
2163   /* sort sub_matchers by id (and then mask), so we can bsearch
2164    * and compare matchers in O(N) instead of O(N²) */
2165   g_array_sort (matcher->sub_matchers, compare_sub_matchers);
2166
2167   /* remove duplicates and specific matches when we match the whole namespace */
2168   j = 0;
2169   compare = &g_array_index (matcher->sub_matchers, SubMatcher, j);
2170
2171   for (i = 1; i < matcher->sub_matchers->len; i++)
2172     {
2173       submatcher = &g_array_index (matcher->sub_matchers, SubMatcher, i);
2174       if (sub_matcher_matches (compare, submatcher))
2175         continue;
2176
2177       j++;
2178       compare++;
2179
2180       if (j < i)
2181         *compare = *submatcher;
2182     }
2183
2184   g_array_set_size (matcher->sub_matchers, j + 1);
2185
2186   return matcher;
2187 }
2188
2189 /**
2190  * g_file_attribute_matcher_new:
2191  * @attributes: an attribute string to match.
2192  *
2193  * Creates a new file attribute matcher, which matches attributes
2194  * against a given string. #GFileAttributeMatcher<!-- -->s are reference
2195  * counted structures, and are created with a reference count of 1. If
2196  * the number of references falls to 0, the #GFileAttributeMatcher is
2197  * automatically destroyed.
2198  *
2199  * The @attribute string should be formatted with specific keys separated
2200  * from namespaces with a double colon. Several "namespace::key" strings may be
2201  * concatenated with a single comma (e.g. "standard::type,standard::is-hidden").
2202  * The wildcard "*" may be used to match all keys and namespaces, or
2203  * "namespace::*" will match all keys in a given namespace.
2204  *
2205  * Examples of strings to use:
2206  * <table>
2207  * <title>File Attribute Matcher strings and results</title>
2208  * <tgroup cols='2' align='left'><thead>
2209  * <row><entry> Matcher String </entry><entry> Matches </entry></row></thead>
2210  * <tbody>
2211  * <row><entry>"*"</entry><entry>matches all attributes.</entry></row>
2212  * <row><entry>"standard::is-hidden"</entry><entry>matches only the key is-hidden in the standard namespace.</entry></row>
2213  * <row><entry>"standard::type,unix::*"</entry><entry>matches the type key in the standard namespace and
2214  * all keys in the unix namespace.</entry></row>
2215  * </tbody></tgroup>
2216  * </table>
2217  *
2218  * Returns: a #GFileAttributeMatcher.
2219  **/
2220 GFileAttributeMatcher *
2221 g_file_attribute_matcher_new (const char *attributes)
2222 {
2223   char **split;
2224   char *colon;
2225   int i;
2226   GFileAttributeMatcher *matcher;
2227
2228   if (attributes == NULL || *attributes == '\0')
2229     return NULL;
2230
2231   matcher = g_malloc0 (sizeof (GFileAttributeMatcher));
2232   matcher->ref = 1;
2233   matcher->sub_matchers = g_array_new (FALSE, FALSE, sizeof (SubMatcher));
2234
2235   split = g_strsplit (attributes, ",", -1);
2236
2237   for (i = 0; split[i] != NULL; i++)
2238     {
2239       if (strcmp (split[i], "*") == 0)
2240         matcher->all = TRUE;
2241       else
2242         {
2243           SubMatcher s;
2244
2245           colon = strstr (split[i], "::");
2246           if (colon != NULL &&
2247               !(colon[2] == 0 ||
2248                 (colon[2] == '*' &&
2249                  colon[3] == 0)))
2250             {
2251               s.id = lookup_attribute (split[i]);
2252               s.mask = 0xffffffff;
2253             }
2254           else
2255             {
2256               if (colon)
2257                 *colon = 0;
2258
2259               s.id = lookup_namespace (split[i]) << NS_POS;
2260               s.mask = NS_MASK << NS_POS;
2261             }
2262
2263           g_array_append_val (matcher->sub_matchers, s);
2264         }
2265     }
2266
2267   g_strfreev (split);
2268
2269   matcher = matcher_optimize (matcher);
2270
2271   return matcher;
2272 }
2273
2274 /**
2275  * g_file_attribute_matcher_subtract:
2276  * @matcher: Matcher to subtract from
2277  * @subtract: The matcher to subtract
2278  *
2279  * Subtracts all attributes of @subtract from @matcher and returns
2280  * a matcher that supports those attributes.
2281  *
2282  * Note that currently it is not possible to remove a single
2283  * attribute when the @matcher matches the whole namespace - or remove
2284  * a namespace or attribute when the matcher matches everything. This
2285  * is a limitation of the current implementation, but may be fixed
2286  * in the future.
2287  *
2288  * Returns: A file attribute matcher matching all attributes of
2289  *     @matcher that are not matched by @subtract
2290  **/
2291 GFileAttributeMatcher *
2292 g_file_attribute_matcher_subtract (GFileAttributeMatcher *matcher,
2293                                    GFileAttributeMatcher *subtract)
2294 {
2295   GFileAttributeMatcher *result;
2296   guint mi, si;
2297   SubMatcher *msub, *ssub;
2298
2299   if (matcher == NULL)
2300     return NULL;
2301   if (subtract == NULL)
2302     return g_file_attribute_matcher_ref (matcher);
2303   if (subtract->all)
2304     return NULL;
2305   if (matcher->all)
2306     return g_file_attribute_matcher_ref (matcher);
2307
2308   result = g_malloc0 (sizeof (GFileAttributeMatcher));
2309   result->ref = 1;
2310   result->sub_matchers = g_array_new (FALSE, FALSE, sizeof (SubMatcher));
2311
2312   si = 0;
2313   g_assert (subtract->sub_matchers->len > 0);
2314   ssub = &g_array_index (subtract->sub_matchers, SubMatcher, si);
2315
2316   for (mi = 0; mi < matcher->sub_matchers->len; mi++)
2317     {
2318       msub = &g_array_index (matcher->sub_matchers, SubMatcher, mi);
2319
2320 retry:
2321       if (sub_matcher_matches (ssub, msub))
2322         continue;
2323
2324       si++;
2325       if (si >= subtract->sub_matchers->len)
2326         break;
2327
2328       ssub = &g_array_index (subtract->sub_matchers, SubMatcher, si);
2329       if (ssub->id <= msub->id)
2330         goto retry;
2331
2332       g_array_append_val (result->sub_matchers, *msub);
2333     }
2334
2335   if (mi < matcher->sub_matchers->len)
2336     g_array_append_vals (result->sub_matchers,
2337                          &g_array_index (matcher->sub_matchers, SubMatcher, mi),
2338                          matcher->sub_matchers->len - mi);
2339
2340   result = matcher_optimize (result);
2341
2342   return result;
2343 }
2344
2345 /**
2346  * g_file_attribute_matcher_ref:
2347  * @matcher: a #GFileAttributeMatcher.
2348  *
2349  * References a file attribute matcher.
2350  *
2351  * Returns: a #GFileAttributeMatcher.
2352  **/
2353 GFileAttributeMatcher *
2354 g_file_attribute_matcher_ref (GFileAttributeMatcher *matcher)
2355 {
2356   if (matcher)
2357     {
2358       g_return_val_if_fail (matcher->ref > 0, NULL);
2359       g_atomic_int_inc (&matcher->ref);
2360     }
2361   return matcher;
2362 }
2363
2364 /**
2365  * g_file_attribute_matcher_unref:
2366  * @matcher: a #GFileAttributeMatcher.
2367  *
2368  * Unreferences @matcher. If the reference count falls below 1,
2369  * the @matcher is automatically freed.
2370  *
2371  **/
2372 void
2373 g_file_attribute_matcher_unref (GFileAttributeMatcher *matcher)
2374 {
2375   if (matcher)
2376     {
2377       g_return_if_fail (matcher->ref > 0);
2378
2379       if (g_atomic_int_dec_and_test (&matcher->ref))
2380         {
2381           if (matcher->sub_matchers)
2382             g_array_free (matcher->sub_matchers, TRUE);
2383
2384           g_free (matcher);
2385         }
2386     }
2387 }
2388
2389 /**
2390  * g_file_attribute_matcher_matches_only:
2391  * @matcher: a #GFileAttributeMatcher.
2392  * @attribute: a file attribute key.
2393  *
2394  * Checks if a attribute matcher only matches a given attribute. Always
2395  * returns %FALSE if "*" was used when creating the matcher.
2396  *
2397  * Returns: %TRUE if the matcher only matches @attribute. %FALSE otherwise.
2398  **/
2399 gboolean
2400 g_file_attribute_matcher_matches_only (GFileAttributeMatcher *matcher,
2401                                        const char            *attribute)
2402 {
2403   SubMatcher *sub_matcher;
2404   guint32 id;
2405
2406   g_return_val_if_fail (attribute != NULL && *attribute != '\0', FALSE);
2407
2408   if (matcher == NULL ||
2409       matcher->all)
2410     return FALSE;
2411
2412   if (matcher->sub_matchers->len != 1)
2413     return FALSE;
2414
2415   id = lookup_attribute (attribute);
2416
2417   sub_matcher = &g_array_index (matcher->sub_matchers, SubMatcher, 0);
2418
2419   return sub_matcher->id == id &&
2420          sub_matcher->mask == 0xffffffff;
2421 }
2422
2423 static gboolean
2424 matcher_matches_id (GFileAttributeMatcher *matcher,
2425                     guint32                id)
2426 {
2427   SubMatcher *sub_matchers;
2428   int i;
2429
2430   if (matcher->sub_matchers)
2431     {
2432       sub_matchers = (SubMatcher *)matcher->sub_matchers->data;
2433       for (i = 0; i < matcher->sub_matchers->len; i++)
2434         {
2435           if (sub_matchers[i].id == (id & sub_matchers[i].mask))
2436             return TRUE;
2437         }
2438     }
2439
2440   return FALSE;
2441 }
2442
2443 gboolean
2444 _g_file_attribute_matcher_matches_id (GFileAttributeMatcher *matcher,
2445                                       guint32                id)
2446 {
2447   /* We return a NULL matcher for an empty match string, so handle this */
2448   if (matcher == NULL)
2449     return FALSE;
2450
2451   if (matcher->all)
2452     return TRUE;
2453
2454   return matcher_matches_id (matcher, id);
2455 }
2456
2457 /**
2458  * g_file_attribute_matcher_matches:
2459  * @matcher: a #GFileAttributeMatcher.
2460  * @attribute: a file attribute key.
2461  *
2462  * Checks if an attribute will be matched by an attribute matcher. If
2463  * the matcher was created with the "*" matching string, this function
2464  * will always return %TRUE.
2465  *
2466  * Returns: %TRUE if @attribute matches @matcher. %FALSE otherwise.
2467  **/
2468 gboolean
2469 g_file_attribute_matcher_matches (GFileAttributeMatcher *matcher,
2470                                   const char            *attribute)
2471 {
2472   g_return_val_if_fail (attribute != NULL && *attribute != '\0', FALSE);
2473
2474   /* We return a NULL matcher for an empty match string, so handle this */
2475   if (matcher == NULL)
2476     return FALSE;
2477
2478   if (matcher->all)
2479     return TRUE;
2480
2481   return matcher_matches_id (matcher, lookup_attribute (attribute));
2482 }
2483
2484 /* return TRUE -> all */
2485 /**
2486  * g_file_attribute_matcher_enumerate_namespace:
2487  * @matcher: a #GFileAttributeMatcher.
2488  * @ns: a string containing a file attribute namespace.
2489  *
2490  * Checks if the matcher will match all of the keys in a given namespace.
2491  * This will always return %TRUE if a wildcard character is in use (e.g. if
2492  * matcher was created with "standard::*" and @ns is "standard", or if matcher was created
2493  * using "*" and namespace is anything.)
2494  *
2495  * TODO: this is awkwardly worded.
2496  *
2497  * Returns: %TRUE if the matcher matches all of the entries
2498  * in the given @ns, %FALSE otherwise.
2499  **/
2500 gboolean
2501 g_file_attribute_matcher_enumerate_namespace (GFileAttributeMatcher *matcher,
2502                                               const char            *ns)
2503 {
2504   SubMatcher *sub_matchers;
2505   int ns_id;
2506   int i;
2507
2508   g_return_val_if_fail (ns != NULL && *ns != '\0', FALSE);
2509
2510   /* We return a NULL matcher for an empty match string, so handle this */
2511   if (matcher == NULL)
2512     return FALSE;
2513
2514   if (matcher->all)
2515     return TRUE;
2516
2517   ns_id = lookup_namespace (ns) << NS_POS;
2518
2519   if (matcher->sub_matchers)
2520     {
2521       sub_matchers = (SubMatcher *)matcher->sub_matchers->data;
2522       for (i = 0; i < matcher->sub_matchers->len; i++)
2523         {
2524           if (sub_matchers[i].id == ns_id)
2525             return TRUE;
2526         }
2527     }
2528
2529   matcher->iterator_ns = ns_id;
2530   matcher->iterator_pos = 0;
2531
2532   return FALSE;
2533 }
2534
2535 /**
2536  * g_file_attribute_matcher_enumerate_next:
2537  * @matcher: a #GFileAttributeMatcher.
2538  *
2539  * Gets the next matched attribute from a #GFileAttributeMatcher.
2540  *
2541  * Returns: a string containing the next attribute or %NULL if
2542  * no more attribute exist.
2543  **/
2544 const char *
2545 g_file_attribute_matcher_enumerate_next (GFileAttributeMatcher *matcher)
2546 {
2547   int i;
2548   SubMatcher *sub_matcher;
2549
2550   /* We return a NULL matcher for an empty match string, so handle this */
2551   if (matcher == NULL)
2552     return NULL;
2553
2554   while (1)
2555     {
2556       i = matcher->iterator_pos++;
2557
2558       if (matcher->sub_matchers == NULL)
2559         return NULL;
2560
2561       if (i < matcher->sub_matchers->len)
2562         sub_matcher = &g_array_index (matcher->sub_matchers, SubMatcher, i);
2563       else
2564         return NULL;
2565
2566       if (sub_matcher->mask == 0xffffffff &&
2567           (sub_matcher->id & (NS_MASK << NS_POS)) == matcher->iterator_ns)
2568         return get_attribute_for_id (sub_matcher->id);
2569     }
2570 }
2571
2572 /**
2573  * g_file_attribute_matcher_to_string:
2574  * @matcher: (allow-none): a #GFileAttributeMatcher.
2575  *
2576  * Prints what the matcher is matching against. The format will be
2577  * equal to the format passed to g_file_attribute_matcher_new().
2578  * The output however, might not be identical, as the matcher may
2579  * decide to use a different order or omit needless parts.
2580  *
2581  * Returns: a string describing the attributes the matcher matches
2582  *   against or %NULL if @matcher was %NULL.
2583  *
2584  * Since: 2.32
2585  **/
2586 char *
2587 g_file_attribute_matcher_to_string (GFileAttributeMatcher *matcher)
2588 {
2589   GString *string;
2590   guint i;
2591
2592   if (matcher == NULL)
2593     return NULL;
2594
2595   if (matcher->all)
2596     return g_strdup ("*");
2597
2598   string = g_string_new ("");
2599   for (i = 0; i < matcher->sub_matchers->len; i++)
2600     {
2601       SubMatcher *submatcher = &g_array_index (matcher->sub_matchers, SubMatcher, i);
2602
2603       if (i > 0)
2604         g_string_append_c (string, ',');
2605
2606       g_string_append (string, get_attribute_for_id (submatcher->id));
2607     }
2608
2609   return g_string_free (string, FALSE);
2610 }