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 "gfileattribute-priv.h"
  61 #include "gicon.h"
  62 #include "glibintl.h"
  63
  64 #include "gioalias.h"
  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 static gboolean g_file_attribute_matcher_matches_id (GFileAttributeMatcher *matcher,
  89                                                      guint32 id);
  90
  91 G_DEFINE_TYPE (GFileInfo, g_file_info, G_TYPE_OBJECT);
  92
  93 typedef struct {
  94   guint32 id;
  95   guint32 attribute_id_counter;
  96 } NSInfo;
  97
  98 G_LOCK_DEFINE_STATIC (attribute_hash);
  99 static int namespace_id_counter = 0;
 100 static GHashTable *ns_hash = NULL;
 101 static GHashTable *attribute_hash = NULL;
 102 static char ***attributes = NULL;
 103
 104 /* Attribute ids are 32bit, we split it up like this:
 105  * |------------|--------------------|
 106  *   12 bit          20 bit
 107  *   namespace      attribute id
 108  *
 109  * This way the attributes gets sorted in namespace order
 110  */
 111
 112 #define NS_POS 20
 113 #define NS_MASK ((guint32)((1<<12) - 1))
 114 #define ID_POS 0
 115 #define ID_MASK ((guint32)((1<<20) - 1))
 116
 117 #define GET_NS(_attr_id) \
 118     (((guint32) (_attr_id) >> NS_POS) & NS_MASK)
 119 #define GET_ID(_attr_id) \
 120     (((guint32)(_attr_id) >> ID_POS) & ID_MASK)
 121
 122 #define MAKE_ATTR_ID(_ns, _id)                          \
 123     ( ((((guint32) _ns) & NS_MASK) << NS_POS) |         \
 124       ((((guint32) _id) & ID_MASK) << ID_POS) )
 125
 126 static NSInfo *
 127 _lookup_namespace (const char *namespace)
 128 {
 129   NSInfo *ns_info;
 130
 131   ns_info = g_hash_table_lookup (ns_hash, namespace);
 132   if (ns_info == NULL)
 133     {
 134       ns_info = g_new0 (NSInfo, 1);
 135       ns_info->id = ++namespace_id_counter;
 136       g_hash_table_insert (ns_hash, g_strdup (namespace), ns_info);
 137       attributes = g_realloc (attributes, (ns_info->id + 1) * sizeof (char **));
 138       attributes[ns_info->id] = NULL;
 139     }
 140   return ns_info;
 141 }
 142
 143 static guint32
 144 lookup_namespace (const char *namespace)
 145 {
 146   NSInfo *ns_info;
 147   guint32 id;
 148
 149   G_LOCK (attribute_hash);
 150
 151   if (attribute_hash == NULL)
 152     {
 153       ns_hash = g_hash_table_new (g_str_hash, g_str_equal);
 154       attribute_hash = g_hash_table_new (g_str_hash, g_str_equal);
 155     }
 156
 157   ns_info = _lookup_namespace (namespace);
 158   id = 0;
 159   if (ns_info)
 160     id = ns_info->id;
 161
 162   G_UNLOCK (attribute_hash);
 163
 164   return id;
 165 }
 166
 167 static char *
 168 get_attribute_for_id (int attribute)
 169 {
 170   char *s;
 171   G_LOCK (attribute_hash);
 172   s = attributes[GET_NS(attribute)][GET_ID(attribute)];
 173   G_UNLOCK (attribute_hash);
 174   return s;
 175 }
 176
 177 static guint32
 178 lookup_attribute (const char *attribute)
 179 {
 180   guint32 attr_id, id;
 181   char *ns;
 182   const char *colon;
 183   NSInfo *ns_info;
 184
 185   G_LOCK (attribute_hash);
 186   if (attribute_hash == NULL)
 187     {
 188       ns_hash = g_hash_table_new (g_str_hash, g_str_equal);
 189       attribute_hash = g_hash_table_new (g_str_hash, g_str_equal);
 190     }
 191
 192   attr_id = GPOINTER_TO_UINT (g_hash_table_lookup (attribute_hash, attribute));
 193
 194   if (attr_id != 0)
 195     {
 196       G_UNLOCK (attribute_hash);
 197       return attr_id;
 198     }
 199
 200   colon = strstr (attribute, "::");
 201   if (colon)
 202     ns = g_strndup (attribute, colon - attribute);
 203   else
 204     ns = g_strdup ("");
 205
 206   ns_info = _lookup_namespace (ns);
 207   g_free (ns);
 208
 209   id = ++ns_info->attribute_id_counter;
 210   attributes[ns_info->id] = g_realloc (attributes[ns_info->id], (id + 1) * sizeof (char *));
 211   attributes[ns_info->id][id] = g_strdup (attribute);
 212
 213   attr_id = MAKE_ATTR_ID (ns_info->id, id);
 214
 215   g_hash_table_insert (attribute_hash, attributes[ns_info->id][id], GUINT_TO_POINTER (attr_id));
 216
 217   G_UNLOCK (attribute_hash);
 218
 219   return attr_id;
 220 }
 221
 222 static void
 223 g_file_info_finalize (GObject *object)
 224 {
 225   GFileInfo *info;
 226   int i;
 227   GFileAttribute *attrs;
 228
 229   info = G_FILE_INFO (object);
 230
 231   attrs = (GFileAttribute *)info->attributes->data;
 232   for (i = 0; i < info->attributes->len; i++)
 233     _g_file_attribute_value_clear (&attrs[i].value);
 234   g_array_free (info->attributes, TRUE);
 235
 236   if (info->mask != NO_ATTRIBUTE_MASK)
 237     g_file_attribute_matcher_unref (info->mask);
 238
 239   G_OBJECT_CLASS (g_file_info_parent_class)->finalize (object);
 240 }
 241
 242 static void
 243 g_file_info_class_init (GFileInfoClass *klass)
 244 {
 245   GObjectClass *gobject_class = G_OBJECT_CLASS (klass);
 246
 247   gobject_class->finalize = g_file_info_finalize;
 248 }
 249
 250 static void
 251 g_file_info_init (GFileInfo *info)
 252 {
 253   info->mask = NO_ATTRIBUTE_MASK;
 254   info->attributes = g_array_new (FALSE, FALSE,
 255                                   sizeof (GFileAttribute));
 256 }
 257
 258 /**
 259  * g_file_info_new:
 260  *
 261  * Creates a new file info structure.
 262  *
 263  * Returns: a #GFileInfo.
 264  **/
 265 GFileInfo *
 266 g_file_info_new (void)
 267 {
 268   return g_object_new (G_TYPE_FILE_INFO, NULL);
 269 }
 270
 271 /**
 272  * g_file_info_copy_into:
 273  * @src_info: source to copy attributes from.
 274  * @dest_info: destination to copy attributes to.
 275  *
 276  * Copies all of the #GFileAttribute<!-- -->s from @src_info to @dest_info.
 277  **/
 278 void
 279 g_file_info_copy_into (GFileInfo *src_info,
 280                        GFileInfo *dest_info)
 281 {
 282   GFileAttribute *source, *dest;
 283   int i;
 284
 285   g_return_if_fail (G_IS_FILE_INFO (src_info));
 286   g_return_if_fail (G_IS_FILE_INFO (dest_info));
 287
 288   dest = (GFileAttribute *)dest_info->attributes->data;
 289   for (i = 0; i < dest_info->attributes->len; i++)
 290     _g_file_attribute_value_clear (&dest[i].value);
 291
 292   g_array_set_size (dest_info->attributes,
 293                     src_info->attributes->len);
 294
 295   source = (GFileAttribute *)src_info->attributes->data;
 296   dest = (GFileAttribute *)dest_info->attributes->data;
 297
 298   for (i = 0; i < src_info->attributes->len; i++)
 299     {
 300       dest[i].attribute = source[i].attribute;
 301       dest[i].value.type = G_FILE_ATTRIBUTE_TYPE_INVALID;
 302       _g_file_attribute_value_set (&dest[i].value, &source[i].value);
 303     }
 304
 305   if (src_info->mask == NO_ATTRIBUTE_MASK)
 306     dest_info->mask = NO_ATTRIBUTE_MASK;
 307   else
 308     dest_info->mask = g_file_attribute_matcher_ref (src_info->mask);
 309 }
 310
 311 /**
 312  * g_file_info_dup:
 313  * @other: a #GFileInfo.
 314  *
 315  * Duplicates a file info structure.
 316  *
 317  * Returns: a duplicate #GFileInfo of @other.
 318  **/
 319 GFileInfo *
 320 g_file_info_dup (GFileInfo *other)
 321 {
 322   GFileInfo *new;
 323
 324   g_return_val_if_fail (G_IS_FILE_INFO (other), NULL);
 325
 326   new = g_file_info_new ();
 327   g_file_info_copy_into (other, new);
 328   return new;
 329 }
 330
 331 /**
 332  * g_file_info_set_attribute_mask:
 333  * @info: a #GFileInfo.
 334  * @mask: a #GFileAttributeMatcher.
 335  *
 336  * Sets @mask on @info to match specific attribute types.
 337  **/
 338 void
 339 g_file_info_set_attribute_mask (GFileInfo             *info,
 340                                 GFileAttributeMatcher *mask)
 341 {
 342   GFileAttribute *attr;
 343   int i;
 344
 345   g_return_if_fail (G_IS_FILE_INFO (info));
 346
 347   if (mask != info->mask)
 348     {
 349       if (info->mask != NO_ATTRIBUTE_MASK)
 350         g_file_attribute_matcher_unref (info->mask);
 351       info->mask = g_file_attribute_matcher_ref (mask);
 352
 353       /* Remove non-matching attributes */
 354       for (i = 0; i < info->attributes->len; i++)
 355         {
 356           attr = &g_array_index (info->attributes, GFileAttribute, i);
 357           if (!g_file_attribute_matcher_matches_id (mask,
 358                                                     attr->attribute))
 359             {
 360               _g_file_attribute_value_clear (&attr->value);
 361               g_array_remove_index (info->attributes, i);
 362               i--;
 363             }
 364         }
 365     }
 366 }
 367
 368 /**
 369  * g_file_info_unset_attribute_mask:
 370  * @info: #GFileInfo.
 371  *
 372  * Unsets a mask set by g_file_info_set_attribute_mask(), if one
 373  * is set.
 374  **/
 375 void
 376 g_file_info_unset_attribute_mask (GFileInfo *info)
 377 {
 378   g_return_if_fail (G_IS_FILE_INFO (info));
 379
 380   if (info->mask != NO_ATTRIBUTE_MASK)
 381     g_file_attribute_matcher_unref (info->mask);
 382   info->mask = NO_ATTRIBUTE_MASK;
 383 }
 384
 385 /**
 386  * g_file_info_clear_status:
 387  * @info: a #GFileInfo.
 388  *
 389  * Clears the status information from @info.
 390  **/
 391 void
 392 g_file_info_clear_status (GFileInfo  *info)
 393 {
 394   GFileAttribute *attrs;
 395   int i;
 396
 397   g_return_if_fail (G_IS_FILE_INFO (info));
 398
 399   attrs = (GFileAttribute *)info->attributes->data;
 400   for (i = 0; i < info->attributes->len; i++)
 401     attrs[i].value.status = G_FILE_ATTRIBUTE_STATUS_UNSET;
 402 }
 403
 404 static int
 405 g_file_info_find_place (GFileInfo  *info,
 406                         guint32     attribute)
 407 {
 408   int min, max, med;
 409   GFileAttribute *attrs;
 410   /* Binary search for the place where attribute would be, if its
 411      in the array */
 412
 413   min = 0;
 414   max = info->attributes->len;
 415
 416   attrs = (GFileAttribute *)info->attributes->data;
 417
 418   while (min < max)
 419     {
 420       med = min + (max - min) / 2;
 421       if (attrs[med].attribute == attribute)
 422         {
 423           min = med;
 424           break;
 425         }
 426       else if (attrs[med].attribute < attribute)
 427         min = med + 1;
 428       else /* attrs[med].attribute > attribute */
 429         max = med;
 430     }
 431
 432   return min;
 433 }
 434
 435 static GFileAttributeValue *
 436 g_file_info_find_value (GFileInfo *info,
 437                         guint32    attr_id)
 438 {
 439   GFileAttribute *attrs;
 440   int i;
 441
 442   i = g_file_info_find_place (info, attr_id);
 443   attrs = (GFileAttribute *)info->attributes->data;
 444   if (i < info->attributes->len &&
 445       attrs[i].attribute == attr_id)
 446     return &attrs[i].value;
 447
 448   return NULL;
 449 }
 450
 451 static GFileAttributeValue *
 452 g_file_info_find_value_by_name (GFileInfo  *info,
 453                                 const char *attribute)
 454 {
 455   guint32 attr_id;
 456
 457   attr_id = lookup_attribute (attribute);
 458   return g_file_info_find_value (info, attr_id);
 459 }
 460
 461 /**
 462  * g_file_info_has_attribute:
 463  * @info: a #GFileInfo.
 464  * @attribute: a file attribute key.
 465  *
 466  * Checks if a file info structure has an attribute named @attribute.
 467  *
 468  * Returns: %TRUE if @Ginfo has an attribute named @attribute,
 469  *     %FALSE otherwise.
 470  **/
 471 gboolean
 472 g_file_info_has_attribute (GFileInfo  *info,
 473                            const char *attribute)
 474 {
 475   GFileAttributeValue *value;
 476
 477   g_return_val_if_fail (G_IS_FILE_INFO (info), FALSE);
 478   g_return_val_if_fail (attribute != NULL && *attribute != '\0', FALSE);
 479
 480   value = g_file_info_find_value_by_name (info, attribute);
 481   return value != NULL;
 482 }
 483
 484 /**
 485  * g_file_info_list_attributes:
 486  * @info: a #GFileInfo.
 487  * @name_space: a file attribute key's namespace.
 488  *
 489  * Lists the file info structure's attributes.
 490  *
 491  * Returns: a null-terminated array of strings of all of the
 492  * possible attribute types for the given @name_space, or
 493  * %NULL on error.
 494  **/
 495 char **
 496 g_file_info_list_attributes (GFileInfo  *info,
 497                              const char *name_space)
 498 {
 499   GPtrArray *names;
 500   GFileAttribute *attrs;
 501   guint32 attribute;
 502   guint32 ns_id = (name_space) ? lookup_namespace (name_space) : 0;
 503   int i;
 504
 505   g_return_val_if_fail (G_IS_FILE_INFO (info), NULL);
 506
 507   names = g_ptr_array_new ();
 508   attrs = (GFileAttribute *)info->attributes->data;
 509   for (i = 0; i < info->attributes->len; i++)
 510     {
 511       attribute = attrs[i].attribute;
 512       if (ns_id == 0 || GET_NS (attribute) == ns_id)
 513         g_ptr_array_add (names, g_strdup (get_attribute_for_id (attribute)));
 514     }
 515
 516   /* NULL terminate */
 517   g_ptr_array_add (names, NULL);
 518
 519   return (char **)g_ptr_array_free (names, FALSE);
 520 }
 521
 522 /**
 523  * g_file_info_get_attribute_type:
 524  * @info: a #GFileInfo.
 525  * @attribute: a file attribute key.
 526  *
 527  * Gets the attribute type for an attribute key.
 528  *
 529  * Returns: a #GFileAttributeType for the given @attribute, or
 530  * %G_FILE_ATTRIBUTE_TYPE_INVALID if the key is invalid.
 531  **/
 532 GFileAttributeType
 533 g_file_info_get_attribute_type (GFileInfo  *info,
 534                                 const char *attribute)
 535 {
 536   GFileAttributeValue *value;
 537
 538   g_return_val_if_fail (G_IS_FILE_INFO (info), G_FILE_ATTRIBUTE_TYPE_INVALID);
 539   g_return_val_if_fail (attribute != NULL && *attribute != '\0', G_FILE_ATTRIBUTE_TYPE_INVALID);
 540
 541   value = g_file_info_find_value_by_name (info, attribute);
 542   if (value)
 543     return value->type;
 544   else
 545     return G_FILE_ATTRIBUTE_TYPE_INVALID;
 546 }
 547
 548 /**
 549  * g_file_info_remove_attribute:
 550  * @info: a #GFileInfo.
 551  * @attribute: a file attribute key.
 552  *
 553  * Removes all cases of @attribute from @info if it exists.
 554  **/
 555 void
 556 g_file_info_remove_attribute (GFileInfo  *info,
 557                               const char *attribute)
 558 {
 559   guint32 attr_id;
 560   GFileAttribute *attrs;
 561   int i;
 562
 563   g_return_if_fail (G_IS_FILE_INFO (info));
 564   g_return_if_fail (attribute != NULL && *attribute != '\0');
 565
 566   attr_id = lookup_attribute (attribute);
 567
 568   i = g_file_info_find_place (info, attr_id);
 569   attrs = (GFileAttribute *)info->attributes->data;
 570   if (i < info->attributes->len &&
 571       attrs[i].attribute == attr_id)
 572     {
 573       _g_file_attribute_value_clear (&attrs[i].value);
 574       g_array_remove_index (info->attributes, i);
 575     }
 576 }
 577
 578 /**
 579  * g_file_info_get_attribute_data:
 580  * @info: a #GFileInfo
 581  * @attribute: a file attribute key
 582  * @type: return location for the attribute type, or %NULL
 583  * @value_pp: return location for the attribute value, or %NULL
 584  * @status: return location for the attribute status, or %NULL
 585  *
 586  * Gets the attribute type, value and status for an attribute key.
 587  *
 588  * Returns: %TRUE if @info has an attribute named @attribute,
 589  *      %FALSE otherwise.
 590  */
 591 gboolean
 592 g_file_info_get_attribute_data (GFileInfo            *info,
 593                                 const char           *attribute,
 594                                 GFileAttributeType   *type,
 595                                 gpointer             *value_pp,
 596                                 GFileAttributeStatus *status)
 597 {
 598   GFileAttributeValue *value;
 599
 600   value = g_file_info_find_value_by_name (info, attribute);
 601   if (value == NULL)
 602     return FALSE;
 603
 604   if (status)
 605     *status = value->status;
 606
 607   if (type)
 608     *type = value->type;
 609
 610   if (value_pp)
 611     *value_pp = _g_file_attribute_value_peek_as_pointer (value);
 612
 613   return TRUE;
 614 }
 615
 616 /**
 617  * g_file_info_get_attribute_status:
 618  * @info: a #GFileInfo
 619  * @attribute: a file attribute key
 620  *
 621  * Gets the attribute status for an attribute key.
 622  *
 623  * Returns: a #GFileAttributeStatus for the given @attribute, or
 624  *    %G_FILE_ATTRIBUTE_STATUS_UNSET if the key is invalid.
 625  *
 626  */
 627 GFileAttributeStatus
 628 g_file_info_get_attribute_status (GFileInfo  *info,
 629                                   const char *attribute)
 630 {
 631   GFileAttributeValue *val;
 632
 633   g_return_val_if_fail (G_IS_FILE_INFO (info), 0);
 634   g_return_val_if_fail (attribute != NULL && *attribute != '\0', 0);
 635
 636   val = g_file_info_find_value_by_name (info, attribute);
 637   if (val)
 638     return val->status;
 639
 640   return G_FILE_ATTRIBUTE_STATUS_UNSET;
 641 }
 642
 643
 644 GFileAttributeValue *
 645 _g_file_info_get_attribute_value (GFileInfo  *info,
 646                                   const char *attribute)
 647
 648 {
 649   g_return_val_if_fail (G_IS_FILE_INFO (info), NULL);
 650   g_return_val_if_fail (attribute != NULL && *attribute != '\0', NULL);
 651
 652   return g_file_info_find_value_by_name (info, attribute);
 653 }
 654
 655 /**
 656  * g_file_info_get_attribute_as_string:
 657  * @info: a #GFileInfo.
 658  * @attribute: a file attribute key.
 659  *
 660  * Gets the value of a attribute, formated as a string.
 661  * This escapes things as needed to make the string valid
 662  * utf8.
 663  *
 664  * Returns: a UTF-8 string associated with the given @attribute.
 665  *    When you're done with the string it must be freed with g_free().
 666  **/
 667 char *
 668 g_file_info_get_attribute_as_string (GFileInfo  *info,
 669                                      const char *attribute)
 670 {
 671   GFileAttributeValue *val;
 672   val = _g_file_info_get_attribute_value (info, attribute);
 673   if (val)
 674     return _g_file_attribute_value_as_string (val);
 675   return NULL;
 676 }
 677
 678
 679 /**
 680  * g_file_info_get_attribute_object:
 681  * @info: a #GFileInfo.
 682  * @attribute: a file attribute key.
 683  *
 684  * Gets the value of a #GObject attribute. If the attribute does
 685  * not contain a #GObject, %NULL will be returned.
 686  *
 687  * Returns: a #GObject associated with the given @attribute, or
 688  * %NULL otherwise.
 689  **/
 690 GObject *
 691 g_file_info_get_attribute_object (GFileInfo  *info,
 692                                   const char *attribute)
 693 {
 694   GFileAttributeValue *value;
 695
 696   g_return_val_if_fail (G_IS_FILE_INFO (info), NULL);
 697   g_return_val_if_fail (attribute != NULL && *attribute != '\0', NULL);
 698
 699   value = g_file_info_find_value_by_name (info, attribute);
 700   return _g_file_attribute_value_get_object (value);
 701 }
 702
 703 /**
 704  * g_file_info_get_attribute_string:
 705  * @info: a #GFileInfo.
 706  * @attribute: a file attribute key.
 707  *
 708  * Gets the value of a string attribute. If the attribute does
 709  * not contain a string, %NULL will be returned.
 710  *
 711  * Returns: the contents of the @attribute value as a string, or
 712  * %NULL otherwise.
 713  **/
 714 const char *
 715 g_file_info_get_attribute_string (GFileInfo  *info,
 716                                   const char *attribute)
 717 {
 718   GFileAttributeValue *value;
 719
 720   g_return_val_if_fail (G_IS_FILE_INFO (info), NULL);
 721   g_return_val_if_fail (attribute != NULL && *attribute != '\0', NULL);
 722
 723   value = g_file_info_find_value_by_name (info, attribute);
 724   return _g_file_attribute_value_get_string (value);
 725 }
 726
 727 /**
 728  * g_file_info_get_attribute_byte_string:
 729  * @info: a #GFileInfo.
 730  * @attribute: a file attribute key.
 731  *
 732  * Gets the value of a byte string attribute. If the attribute does
 733  * not contain a byte string, %NULL will be returned.
 734  *
 735  * Returns: the contents of the @attribute value as a byte string, or
 736  * %NULL otherwise.
 737  **/
 738 const char *
 739 g_file_info_get_attribute_byte_string (GFileInfo  *info,
 740                                        const char *attribute)
 741 {
 742   GFileAttributeValue *value;
 743
 744   g_return_val_if_fail (G_IS_FILE_INFO (info), NULL);
 745   g_return_val_if_fail (attribute != NULL && *attribute != '\0', NULL);
 746
 747   value = g_file_info_find_value_by_name (info, attribute);
 748   return _g_file_attribute_value_get_byte_string (value);
 749 }
 750
 751 /**
 752  * g_file_info_get_attribute_boolean:
 753  * @info: a #GFileInfo.
 754  * @attribute: a file attribute key.
 755  *
 756  * Gets the value of a boolean attribute. If the attribute does not
 757  * contain a boolean value, %FALSE will be returned.
 758  *
 759  * Returns: the boolean value contained within the attribute.
 760  **/
 761 gboolean
 762 g_file_info_get_attribute_boolean (GFileInfo  *info,
 763                                    const char *attribute)
 764 {
 765   GFileAttributeValue *value;
 766
 767   g_return_val_if_fail (G_IS_FILE_INFO (info), FALSE);
 768   g_return_val_if_fail (attribute != NULL && *attribute != '\0', FALSE);
 769
 770   value = g_file_info_find_value_by_name (info, attribute);
 771   return _g_file_attribute_value_get_boolean (value);
 772 }
 773
 774 /**
 775  * g_file_info_get_attribute_uint32:
 776  * @info: a #GFileInfo.
 777  * @attribute: a file attribute key.
 778  *
 779  * Gets an unsigned 32-bit integer contained within the attribute. If the
 780  * attribute does not contain an unsigned 32-bit integer, or is invalid,
 781  * 0 will be returned.
 782  *
 783  * Returns: an unsigned 32-bit integer from the attribute.
 784  **/
 785 guint32
 786 g_file_info_get_attribute_uint32 (GFileInfo  *info,
 787                                   const char *attribute)
 788 {
 789   GFileAttributeValue *value;
 790
 791   g_return_val_if_fail (G_IS_FILE_INFO (info), 0);
 792   g_return_val_if_fail (attribute != NULL && *attribute != '\0', 0);
 793
 794   value = g_file_info_find_value_by_name (info, attribute);
 795   return _g_file_attribute_value_get_uint32 (value);
 796 }
 797
 798 /**
 799  * g_file_info_get_attribute_int32:
 800  * @info: a #GFileInfo.
 801  * @attribute: a file attribute key.
 802  *
 803  * Gets a signed 32-bit integer contained within the attribute. If the
 804  * attribute does not contain a signed 32-bit integer, or is invalid,
 805  * 0 will be returned.
 806  *
 807  * Returns: a signed 32-bit integer from the attribute.
 808  **/
 809 gint32
 810 g_file_info_get_attribute_int32 (GFileInfo  *info,
 811                                  const char *attribute)
 812 {
 813   GFileAttributeValue *value;
 814
 815   g_return_val_if_fail (G_IS_FILE_INFO (info), 0);
 816   g_return_val_if_fail (attribute != NULL && *attribute != '\0', 0);
 817
 818   value = g_file_info_find_value_by_name (info, attribute);
 819   return _g_file_attribute_value_get_int32 (value);
 820 }
 821
 822 /**
 823  * g_file_info_get_attribute_uint64:
 824  * @info: a #GFileInfo.
 825  * @attribute: a file attribute key.
 826  *
 827  * Gets a unsigned 64-bit integer contained within the attribute. If the
 828  * attribute does not contain an unsigned 64-bit integer, or is invalid,
 829  * 0 will be returned.
 830  *
 831  * Returns: a unsigned 64-bit integer from the attribute.
 832  **/
 833 guint64
 834 g_file_info_get_attribute_uint64 (GFileInfo  *info,
 835                                   const char *attribute)
 836 {
 837   GFileAttributeValue *value;
 838
 839   g_return_val_if_fail (G_IS_FILE_INFO (info), 0);
 840   g_return_val_if_fail (attribute != NULL && *attribute != '\0', 0);
 841
 842   value = g_file_info_find_value_by_name (info, attribute);
 843   return _g_file_attribute_value_get_uint64 (value);
 844 }
 845
 846 /**
 847  * g_file_info_get_attribute_int64:
 848  * @info: a #GFileInfo.
 849  * @attribute: a file attribute key.
 850  *
 851  * Gets a signed 64-bit integer contained within the attribute. If the
 852  * attribute does not contain an signed 64-bit integer, or is invalid,
 853  * 0 will be returned.
 854  *
 855  * Returns: a signed 64-bit integer from the attribute.
 856  **/
 857 gint64
 858 g_file_info_get_attribute_int64  (GFileInfo  *info,
 859                                   const char *attribute)
 860 {
 861   GFileAttributeValue *value;
 862
 863   g_return_val_if_fail (G_IS_FILE_INFO (info), 0);
 864   g_return_val_if_fail (attribute != NULL && *attribute != '\0', 0);
 865
 866   value = g_file_info_find_value_by_name (info, attribute);
 867   return _g_file_attribute_value_get_int64 (value);
 868 }
 869
 870 static GFileAttributeValue *
 871 g_file_info_create_value (GFileInfo *info,
 872                           guint32 attr_id)
 873 {
 874   GFileAttribute *attrs;
 875   int i;
 876
 877   if (info->mask != NO_ATTRIBUTE_MASK &&
 878       !g_file_attribute_matcher_matches_id (info->mask, attr_id))
 879     return NULL;
 880
 881   i = g_file_info_find_place (info, attr_id);
 882
 883   attrs = (GFileAttribute *)info->attributes->data;
 884   if (i < info->attributes->len &&
 885       attrs[i].attribute == attr_id)
 886     return &attrs[i].value;
 887   else
 888     {
 889       GFileAttribute attr = { 0 };
 890       attr.attribute = attr_id;
 891       g_array_insert_val (info->attributes, i, attr);
 892
 893       attrs = (GFileAttribute *)info->attributes->data;
 894       return &attrs[i].value;
 895     }
 896 }
 897
 898 static GFileAttributeValue *
 899 g_file_info_create_value_by_name (GFileInfo *info,
 900                                   const char *attribute)
 901 {
 902   guint32 attr_id;
 903
 904   attr_id = lookup_attribute (attribute);
 905
 906   return g_file_info_create_value (info, attr_id);
 907 }
 908
 909 /**
 910  * g_file_info_set_attribute:
 911  * @info: a #GFileInfo.
 912  * @attribute: a file attribute key.
 913  * @type: a #GFileAttributeType
 914  * @value_p: pointer to the value
 915  *
 916  * Sets the @attribute to contain the given value, if possible.
 917  **/
 918 void
 919 g_file_info_set_attribute (GFileInfo                 *info,
 920                            const char                *attribute,
 921                            GFileAttributeType         type,
 922                            gpointer                   value_p)
 923 {
 924   GFileAttributeValue *value;
 925
 926   g_return_if_fail (G_IS_FILE_INFO (info));
 927   g_return_if_fail (attribute != NULL && *attribute != '\0');
 928
 929   value = g_file_info_create_value_by_name (info, attribute);
 930
 931   if (value)
 932     _g_file_attribute_value_set_from_pointer (value, type, value_p, TRUE);
 933 }
 934
 935 /**
 936  * g_file_info_set_attribute_object:
 937  * @info: a #GFileInfo.
 938  * @attribute: a file attribute key.
 939  * @attr_value: a #GObject.
 940  *
 941  * Sets the @attribute to contain the given @attr_value,
 942  * if possible.
 943  **/
 944 void
 945 g_file_info_set_attribute_object (GFileInfo  *info,
 946                                   const char *attribute,
 947                                   GObject    *attr_value)
 948 {
 949   GFileAttributeValue *value;
 950
 951   g_return_if_fail (G_IS_FILE_INFO (info));
 952   g_return_if_fail (attribute != NULL && *attribute != '\0');
 953   g_return_if_fail (G_IS_OBJECT (attr_value));
 954
 955   value = g_file_info_create_value_by_name (info, attribute);
 956   if (value)
 957     _g_file_attribute_value_set_object (value, attr_value);
 958 }
 959
 960 /**
 961  * g_file_info_set_attribute_string:
 962  * @info: a #GFileInfo.
 963  * @attribute: a file attribute key.
 964  * @attr_value: a string.
 965  *
 966  * Sets the @attribute to contain the given @attr_value,
 967  * if possible.
 968  **/
 969 void
 970 g_file_info_set_attribute_string (GFileInfo  *info,
 971                                   const char *attribute,
 972                                   const char *attr_value)
 973 {
 974   GFileAttributeValue *value;
 975
 976   g_return_if_fail (G_IS_FILE_INFO (info));
 977   g_return_if_fail (attribute != NULL && *attribute != '\0');
 978   g_return_if_fail (attr_value != NULL);
 979
 980   value = g_file_info_create_value_by_name (info, attribute);
 981   if (value)
 982     _g_file_attribute_value_set_string (value, attr_value);
 983 }
 984
 985 /**
 986  * g_file_info_set_attribute_byte_string:
 987  * @info: a #GFileInfo.
 988  * @attribute: a file attribute key.
 989  * @attr_value: a byte string.
 990  *
 991  * Sets the @attribute to contain the given @attr_value,
 992  * if possible.
 993  **/
 994 void
 995 g_file_info_set_attribute_byte_string (GFileInfo  *info,
 996                                        const char *attribute,
 997                                        const char *attr_value)
 998 {
 999   GFileAttributeValue *value;
1000
1001   g_return_if_fail (G_IS_FILE_INFO (info));
1002   g_return_if_fail (attribute != NULL && *attribute != '\0');
1003   g_return_if_fail (attr_value != NULL);
1004
1005   value = g_file_info_create_value_by_name (info, attribute);
1006   if (value)
1007     _g_file_attribute_value_set_byte_string (value, attr_value);
1008 }
1009
1010 /**
1011  * g_file_info_set_attribute_boolean:
1012  * @info: a #GFileInfo.
1013  * @attribute: a file attribute key.
1014  * @attr_value: a boolean value.
1015  *
1016  * Sets the @attribute to contain the given @attr_value,
1017  * if possible.
1018  **/
1019 void
1020 g_file_info_set_attribute_boolean (GFileInfo  *info,
1021                                    const char *attribute,
1022                                    gboolean    attr_value)
1023 {
1024   GFileAttributeValue *value;
1025
1026   g_return_if_fail (G_IS_FILE_INFO (info));
1027   g_return_if_fail (attribute != NULL && *attribute != '\0');
1028
1029   value = g_file_info_create_value_by_name (info, attribute);
1030   if (value)
1031     _g_file_attribute_value_set_boolean (value, attr_value);
1032 }
1033
1034 /**
1035  * g_file_info_set_attribute_uint32:
1036  * @info: a #GFileInfo.
1037  * @attribute: a file attribute key.
1038  * @attr_value: an unsigned 32-bit integer.
1039  *
1040  * Sets the @attribute to contain the given @attr_value,
1041  * if possible.
1042  **/
1043 void
1044 g_file_info_set_attribute_uint32 (GFileInfo  *info,
1045                                   const char *attribute,
1046                                   guint32     attr_value)
1047 {
1048   GFileAttributeValue *value;
1049
1050   g_return_if_fail (G_IS_FILE_INFO (info));
1051   g_return_if_fail (attribute != NULL && *attribute != '\0');
1052
1053   value = g_file_info_create_value_by_name (info, attribute);
1054   if (value)
1055     _g_file_attribute_value_set_uint32 (value, attr_value);
1056 }
1057
1058
1059 /**
1060  * g_file_info_set_attribute_int32:
1061  * @info: a #GFileInfo.
1062  * @attribute: a file attribute key.
1063  * @attr_value: a signed 32-bit integer
1064  *
1065  * Sets the @attribute to contain the given @attr_value,
1066  * if possible.
1067  **/
1068 void
1069 g_file_info_set_attribute_int32 (GFileInfo  *info,
1070                                  const char *attribute,
1071                                  gint32      attr_value)
1072 {
1073   GFileAttributeValue *value;
1074
1075   g_return_if_fail (G_IS_FILE_INFO (info));
1076   g_return_if_fail (attribute != NULL && *attribute != '\0');
1077
1078   value = g_file_info_create_value_by_name (info, attribute);
1079   if (value)
1080     _g_file_attribute_value_set_int32 (value, attr_value);
1081 }
1082
1083 /**
1084  * g_file_info_set_attribute_uint64:
1085  * @info: a #GFileInfo.
1086  * @attribute: a file attribute key.
1087  * @attr_value: an unsigned 64-bit integer.
1088  *
1089  * Sets the @attribute to contain the given @attr_value,
1090  * if possible.
1091  **/
1092 void
1093 g_file_info_set_attribute_uint64 (GFileInfo  *info,
1094                                   const char *attribute,
1095                                   guint64     attr_value)
1096 {
1097   GFileAttributeValue *value;
1098
1099   g_return_if_fail (G_IS_FILE_INFO (info));
1100   g_return_if_fail (attribute != NULL && *attribute != '\0');
1101
1102   value = g_file_info_create_value_by_name (info, attribute);
1103   if (value)
1104     _g_file_attribute_value_set_uint64 (value, attr_value);
1105 }
1106
1107 /**
1108  * g_file_info_set_attribute_int64:
1109  * @info: a #GFileInfo.
1110  * @attribute: attribute name to set.
1111  * @attr_value: int64 value to set attribute to.
1112  *
1113  * Sets the @attribute to contain the given @attr_value,
1114  * if possible.
1115  *
1116  **/
1117 void
1118 g_file_info_set_attribute_int64  (GFileInfo  *info,
1119                                   const char *attribute,
1120                                   gint64      attr_value)
1121 {
1122   GFileAttributeValue *value;
1123
1124   g_return_if_fail (G_IS_FILE_INFO (info));
1125   g_return_if_fail (attribute != NULL && *attribute != '\0');
1126
1127   value = g_file_info_create_value_by_name (info, attribute);
1128   if (value)
1129     _g_file_attribute_value_set_int64 (value, attr_value);
1130 }
1131
1132 /* Helper getters */
1133 /**
1134  * g_file_info_get_file_type:
1135  * @info: a #GFileInfo.
1136  *
1137  * Gets a file's type (whether it is a regular file, symlink, etc).
1138  * This is different from the file's content type, see g_file_info_get_content_type().
1139  *
1140  * Returns: a #GFileType for the given file.
1141  **/
1142 GFileType
1143 g_file_info_get_file_type (GFileInfo *info)
1144 {
1145   static guint32 attr = 0;
1146   GFileAttributeValue *value;
1147
1148   g_return_val_if_fail (G_IS_FILE_INFO (info), G_FILE_TYPE_UNKNOWN);
1149
1150   if (attr == 0)
1151     attr = lookup_attribute (G_FILE_ATTRIBUTE_STANDARD_TYPE);
1152
1153   value = g_file_info_find_value (info, attr);
1154   return (GFileType)_g_file_attribute_value_get_uint32 (value);
1155 }
1156
1157 /**
1158  * g_file_info_get_is_hidden:
1159  * @info: a #GFileInfo.
1160  *
1161  * Checks if a file is hidden.
1162  *
1163  * Returns: %TRUE if the file is a hidden file, %FALSE otherwise.
1164  **/
1165 gboolean
1166 g_file_info_get_is_hidden (GFileInfo *info)
1167 {
1168   static guint32 attr = 0;
1169   GFileAttributeValue *value;
1170
1171   g_return_val_if_fail (G_IS_FILE_INFO (info), FALSE);
1172
1173   if (attr == 0)
1174     attr = lookup_attribute (G_FILE_ATTRIBUTE_STANDARD_IS_HIDDEN);
1175
1176   value = g_file_info_find_value (info, attr);
1177   return (GFileType)_g_file_attribute_value_get_boolean (value);
1178 }
1179
1180 /**
1181  * g_file_info_get_is_backup:
1182  * @info: a #GFileInfo.
1183  *
1184  * Checks if a file is a backup file.
1185  *
1186  * Returns: %TRUE if file is a backup file, %FALSE otherwise.
1187  **/
1188 gboolean
1189 g_file_info_get_is_backup (GFileInfo *info)
1190 {
1191   static guint32 attr = 0;
1192   GFileAttributeValue *value;
1193
1194   g_return_val_if_fail (G_IS_FILE_INFO (info), FALSE);
1195
1196   if (attr == 0)
1197     attr = lookup_attribute (G_FILE_ATTRIBUTE_STANDARD_IS_BACKUP);
1198
1199   value = g_file_info_find_value (info, attr);
1200   return (GFileType)_g_file_attribute_value_get_boolean (value);
1201 }
1202
1203 /**
1204  * g_file_info_get_is_symlink:
1205  * @info: a #GFileInfo.
1206  *
1207  * Checks if a file is a symlink.
1208  *
1209  * Returns: %TRUE if the given @info is a symlink.
1210  **/
1211 gboolean
1212 g_file_info_get_is_symlink (GFileInfo *info)
1213 {
1214   static guint32 attr = 0;
1215   GFileAttributeValue *value;
1216
1217   g_return_val_if_fail (G_IS_FILE_INFO (info), FALSE);
1218
1219   if (attr == 0)
1220     attr = lookup_attribute (G_FILE_ATTRIBUTE_STANDARD_IS_SYMLINK);
1221
1222   value = g_file_info_find_value (info, attr);
1223   return (GFileType)_g_file_attribute_value_get_boolean (value);
1224 }
1225
1226 /**
1227  * g_file_info_get_name:
1228  * @info: a #GFileInfo.
1229  *
1230  * Gets the name for a file.
1231  *
1232  * Returns: a string containing the file name.
1233  **/
1234 const char *
1235 g_file_info_get_name (GFileInfo *info)
1236 {
1237   static guint32 attr = 0;
1238   GFileAttributeValue *value;
1239
1240   g_return_val_if_fail (G_IS_FILE_INFO (info), NULL);
1241
1242   if (attr == 0)
1243     attr = lookup_attribute (G_FILE_ATTRIBUTE_STANDARD_NAME);
1244
1245   value = g_file_info_find_value (info, attr);
1246   return _g_file_attribute_value_get_byte_string (value);
1247 }
1248
1249 /**
1250  * g_file_info_get_display_name:
1251  * @info: a #GFileInfo.
1252  *
1253  * Gets a display name for a file.
1254  *
1255  * Returns: a string containing the display name.
1256  **/
1257 const char *
1258 g_file_info_get_display_name (GFileInfo *info)
1259 {
1260   static guint32 attr = 0;
1261   GFileAttributeValue *value;
1262
1263   g_return_val_if_fail (G_IS_FILE_INFO (info), NULL);
1264
1265   if (attr == 0)
1266     attr = lookup_attribute (G_FILE_ATTRIBUTE_STANDARD_DISPLAY_NAME);
1267
1268   value = g_file_info_find_value (info, attr);
1269   return _g_file_attribute_value_get_string (value);
1270 }
1271
1272 /**
1273  * g_file_info_get_edit_name:
1274  * @info: a #GFileInfo.
1275  *
1276  * Gets the edit name for a file.
1277  *
1278  * Returns: a string containing the edit name.
1279  **/
1280 const char *
1281 g_file_info_get_edit_name (GFileInfo *info)
1282 {
1283   static guint32 attr = 0;
1284   GFileAttributeValue *value;
1285
1286   g_return_val_if_fail (G_IS_FILE_INFO (info), NULL);
1287
1288   if (attr == 0)
1289     attr = lookup_attribute (G_FILE_ATTRIBUTE_STANDARD_EDIT_NAME);
1290
1291   value = g_file_info_find_value (info, attr);
1292   return _g_file_attribute_value_get_string (value);
1293 }
1294
1295 /**
1296  * g_file_info_get_icon:
1297  * @info: a #GFileInfo.
1298  *
1299  * Gets the icon for a file.
1300  *
1301  * Returns: #GIcon for the given @info.
1302  **/
1303 GIcon *
1304 g_file_info_get_icon (GFileInfo *info)
1305 {
1306   static guint32 attr = 0;
1307   GFileAttributeValue *value;
1308   GObject *obj;
1309
1310   g_return_val_if_fail (G_IS_FILE_INFO (info), NULL);
1311
1312   if (attr == 0)
1313     attr = lookup_attribute (G_FILE_ATTRIBUTE_STANDARD_ICON);
1314
1315   value = g_file_info_find_value (info, attr);
1316   obj = _g_file_attribute_value_get_object (value);
1317   if (G_IS_ICON (obj))
1318     return G_ICON (obj);
1319   return NULL;
1320 }
1321
1322 /**
1323  * g_file_info_get_content_type:
1324  * @info: a #GFileInfo.
1325  *
1326  * Gets the file's content type.
1327  *
1328  * Returns: a string containing the file's content type.s
1329  **/
1330 const char *
1331 g_file_info_get_content_type (GFileInfo *info)
1332 {
1333   static guint32 attr = 0;
1334   GFileAttributeValue *value;
1335
1336   g_return_val_if_fail (G_IS_FILE_INFO (info), NULL);
1337
1338   if (attr == 0)
1339     attr = lookup_attribute (G_FILE_ATTRIBUTE_STANDARD_CONTENT_TYPE);
1340
1341   value = g_file_info_find_value (info, attr);
1342   return _g_file_attribute_value_get_string (value);
1343 }
1344
1345 /**
1346  * g_file_info_get_size:
1347  * @info: a #GFileInfo.
1348  *
1349  * Gets the file's size.
1350  *
1351  * Returns: a #goffset containing the file's size.
1352  **/
1353 goffset
1354 g_file_info_get_size (GFileInfo *info)
1355 {
1356   static guint32 attr = 0;
1357   GFileAttributeValue *value;
1358
1359   g_return_val_if_fail (G_IS_FILE_INFO (info), (goffset) 0);
1360
1361   if (attr == 0)
1362     attr = lookup_attribute (G_FILE_ATTRIBUTE_STANDARD_SIZE);
1363
1364   value = g_file_info_find_value (info, attr);
1365   return (goffset) _g_file_attribute_value_get_uint64 (value);
1366 }
1367
1368 /**
1369  * g_file_info_get_modification_time:
1370  * @info: a #GFileInfo.
1371  * @result: a #GTimeVal.
1372  *
1373  * Gets the modification time of the current @info and sets it
1374  * in @result.
1375  **/
1376 void
1377 g_file_info_get_modification_time (GFileInfo *info,
1378                                    GTimeVal  *result)
1379 {
1380   static guint32 attr_mtime = 0, attr_mtime_usec;
1381   GFileAttributeValue *value;
1382
1383   g_return_if_fail (G_IS_FILE_INFO (info));
1384   g_return_if_fail (result != NULL);
1385
1386   if (attr_mtime == 0)
1387     {
1388       attr_mtime = lookup_attribute (G_FILE_ATTRIBUTE_TIME_MODIFIED);
1389       attr_mtime_usec = lookup_attribute (G_FILE_ATTRIBUTE_TIME_MODIFIED_USEC);
1390     }
1391
1392   value = g_file_info_find_value (info, attr_mtime);
1393   result->tv_sec = _g_file_attribute_value_get_uint64 (value);
1394   value = g_file_info_find_value (info, attr_mtime_usec);
1395   result->tv_usec = _g_file_attribute_value_get_uint32 (value);
1396 }
1397
1398 /**
1399  * g_file_info_get_symlink_target:
1400  * @info: a #GFileInfo.
1401  *
1402  * Gets the symlink target for a given #GFileInfo.
1403  *
1404  * Returns: a string containing the symlink target.
1405  **/
1406 const char *
1407 g_file_info_get_symlink_target (GFileInfo *info)
1408 {
1409   static guint32 attr = 0;
1410   GFileAttributeValue *value;
1411
1412   g_return_val_if_fail (G_IS_FILE_INFO (info), NULL);
1413
1414   if (attr == 0)
1415     attr = lookup_attribute (G_FILE_ATTRIBUTE_STANDARD_SYMLINK_TARGET);
1416
1417   value = g_file_info_find_value (info, attr);
1418   return _g_file_attribute_value_get_byte_string (value);
1419 }
1420
1421 /**
1422  * g_file_info_get_etag:
1423  * @info: a #GFileInfo.
1424  *
1425  * Gets the <link linkend="gfile-etag">entity tag</link> for a given
1426  * #GFileInfo. See %G_FILE_ATTRIBUTE_ETAG_VALUE.
1427  *
1428  * Returns: a string containing the value of the "etag:value" attribute.
1429  **/
1430 const char *
1431 g_file_info_get_etag (GFileInfo *info)
1432 {
1433   static guint32 attr = 0;
1434   GFileAttributeValue *value;
1435
1436   g_return_val_if_fail (G_IS_FILE_INFO (info), NULL);
1437
1438   if (attr == 0)
1439     attr = lookup_attribute (G_FILE_ATTRIBUTE_ETAG_VALUE);
1440
1441   value = g_file_info_find_value (info, attr);
1442   return _g_file_attribute_value_get_string (value);
1443 }
1444
1445 /**
1446  * g_file_info_get_sort_order:
1447  * @info: a #GFileInfo.
1448  *
1449  * Gets the value of the sort_order attribute from the #GFileInfo.
1450  * See %G_FILE_ATTRIBUTE_STANDARD_SORT_ORDER.
1451  *
1452  * Returns: a #gint32 containing the value of the "standard::sort_order" attribute.
1453  **/
1454 gint32
1455 g_file_info_get_sort_order (GFileInfo *info)
1456 {
1457   static guint32 attr = 0;
1458   GFileAttributeValue *value;
1459
1460   g_return_val_if_fail (G_IS_FILE_INFO (info), 0);
1461
1462   if (attr == 0)
1463     attr = lookup_attribute (G_FILE_ATTRIBUTE_STANDARD_SORT_ORDER);
1464
1465   value = g_file_info_find_value (info, attr);
1466   return _g_file_attribute_value_get_int32 (value);
1467 }
1468
1469 /* Helper setters: */
1470 /**
1471  * g_file_info_set_file_type:
1472  * @info: a #GFileInfo.
1473  * @type: a #GFileType.
1474  *
1475  * Sets the file type in a #GFileInfo to @type.
1476  * See %G_FILE_ATTRIBUTE_STANDARD_TYPE.
1477  **/
1478 void
1479 g_file_info_set_file_type (GFileInfo *info,
1480                            GFileType  type)
1481 {
1482   static guint32 attr = 0;
1483   GFileAttributeValue *value;
1484
1485   g_return_if_fail (G_IS_FILE_INFO (info));
1486
1487   if (attr == 0)
1488     attr = lookup_attribute (G_FILE_ATTRIBUTE_STANDARD_TYPE);
1489
1490   value = g_file_info_create_value (info, attr);
1491   if (value)
1492     _g_file_attribute_value_set_uint32 (value, type);
1493 }
1494
1495 /**
1496  * g_file_info_set_is_hidden:
1497  * @info: a #GFileInfo.
1498  * @is_hidden: a #gboolean.
1499  *
1500  * Sets the "is_hidden" attribute in a #GFileInfo according to @is_symlink.
1501  * See %G_FILE_ATTRIBUTE_STANDARD_IS_HIDDEN.
1502  **/
1503 void
1504 g_file_info_set_is_hidden (GFileInfo *info,
1505                            gboolean   is_hidden)
1506 {
1507   static guint32 attr = 0;
1508   GFileAttributeValue *value;
1509
1510   g_return_if_fail (G_IS_FILE_INFO (info));
1511
1512   if (attr == 0)
1513     attr = lookup_attribute (G_FILE_ATTRIBUTE_STANDARD_IS_HIDDEN);
1514
1515   value = g_file_info_create_value (info, attr);
1516   if (value)
1517     _g_file_attribute_value_set_boolean (value, is_hidden);
1518 }
1519
1520 /**
1521  * g_file_info_set_is_symlink:
1522  * @info: a #GFileInfo.
1523  * @is_symlink: a #gboolean.
1524  *
1525  * Sets the "is_symlink" attribute in a #GFileInfo according to @is_symlink.
1526  * See %G_FILE_ATTRIBUTE_STANDARD_IS_SYMLINK.
1527  **/
1528 void
1529 g_file_info_set_is_symlink (GFileInfo *info,
1530                             gboolean   is_symlink)
1531 {
1532   static guint32 attr = 0;
1533   GFileAttributeValue *value;
1534
1535   g_return_if_fail (G_IS_FILE_INFO (info));
1536
1537   if (attr == 0)
1538     attr = lookup_attribute (G_FILE_ATTRIBUTE_STANDARD_IS_SYMLINK);
1539
1540   value = g_file_info_create_value (info, attr);
1541   if (value)
1542     _g_file_attribute_value_set_boolean (value, is_symlink);
1543 }
1544
1545 /**
1546  * g_file_info_set_name:
1547  * @info: a #GFileInfo.
1548  * @name: a string containing a name.
1549  *
1550  * Sets the name attribute for the current #GFileInfo.
1551  * See %G_FILE_ATTRIBUTE_STANDARD_NAME.
1552  **/
1553 void
1554 g_file_info_set_name (GFileInfo  *info,
1555                       const char *name)
1556 {
1557   static guint32 attr = 0;
1558   GFileAttributeValue *value;
1559
1560   g_return_if_fail (G_IS_FILE_INFO (info));
1561   g_return_if_fail (name != NULL);
1562
1563   if (attr == 0)
1564     attr = lookup_attribute (G_FILE_ATTRIBUTE_STANDARD_NAME);
1565
1566   value = g_file_info_create_value (info, attr);
1567   if (value)
1568     _g_file_attribute_value_set_byte_string (value, name);
1569 }
1570
1571 /**
1572  * g_file_info_set_display_name:
1573  * @info: a #GFileInfo.
1574  * @display_name: a string containing a display name.
1575  *
1576  * Sets the display name for the current #GFileInfo.
1577  * See %G_FILE_ATTRIBUTE_STANDARD_DISPLAY_NAME.
1578  **/
1579 void
1580 g_file_info_set_display_name (GFileInfo  *info,
1581                               const char *display_name)
1582 {
1583   static guint32 attr = 0;
1584   GFileAttributeValue *value;
1585
1586   g_return_if_fail (G_IS_FILE_INFO (info));
1587   g_return_if_fail (display_name != NULL);
1588
1589   if (attr == 0)
1590     attr = lookup_attribute (G_FILE_ATTRIBUTE_STANDARD_DISPLAY_NAME);
1591
1592   value = g_file_info_create_value (info, attr);
1593   if (value)
1594     _g_file_attribute_value_set_string (value, display_name);
1595 }
1596
1597 /**
1598  * g_file_info_set_edit_name:
1599  * @info: a #GFileInfo.
1600  * @edit_name: a string containing an edit name.
1601  *
1602  * Sets the edit name for the current file.
1603  * See %G_FILE_ATTRIBUTE_STANDARD_EDIT_NAME.
1604  **/
1605 void
1606 g_file_info_set_edit_name (GFileInfo  *info,
1607                            const char *edit_name)
1608 {
1609   static guint32 attr = 0;
1610   GFileAttributeValue *value;
1611
1612   g_return_if_fail (G_IS_FILE_INFO (info));
1613   g_return_if_fail (edit_name != NULL);
1614
1615   if (attr == 0)
1616     attr = lookup_attribute (G_FILE_ATTRIBUTE_STANDARD_EDIT_NAME);
1617
1618   value = g_file_info_create_value (info, attr);
1619   if (value)
1620     _g_file_attribute_value_set_string (value, edit_name);
1621 }
1622
1623 /**
1624  * g_file_info_set_icon:
1625  * @info: a #GFileInfo.
1626  * @icon: a #GIcon.
1627  *
1628  * Sets the icon for a given #GFileInfo.
1629  * See %G_FILE_ATTRIBUTE_STANDARD_ICON.
1630  **/
1631 void
1632 g_file_info_set_icon (GFileInfo *info,
1633                       GIcon     *icon)
1634 {
1635   static guint32 attr = 0;
1636   GFileAttributeValue *value;
1637
1638   g_return_if_fail (G_IS_FILE_INFO (info));
1639   g_return_if_fail (G_IS_ICON (icon));
1640
1641   if (attr == 0)
1642     attr = lookup_attribute (G_FILE_ATTRIBUTE_STANDARD_ICON);
1643
1644   value = g_file_info_create_value (info, attr);
1645   if (value)
1646     _g_file_attribute_value_set_object (value, G_OBJECT (icon));
1647 }
1648
1649 /**
1650  * g_file_info_set_content_type:
1651  * @info: a #GFileInfo.
1652  * @content_type: a content type. See #GContentType.
1653  *
1654  * Sets the content type attribute for a given #GFileInfo.
1655  * See %G_FILE_ATTRIBUTE_STANDARD_CONTENT_TYPE.
1656  **/
1657 void
1658 g_file_info_set_content_type (GFileInfo  *info,
1659                               const char *content_type)
1660 {
1661   static guint32 attr = 0;
1662   GFileAttributeValue *value;
1663
1664   g_return_if_fail (G_IS_FILE_INFO (info));
1665   g_return_if_fail (content_type != NULL);
1666
1667   if (attr == 0)
1668     attr = lookup_attribute (G_FILE_ATTRIBUTE_STANDARD_CONTENT_TYPE);
1669
1670   value = g_file_info_create_value (info, attr);
1671   if (value)
1672     _g_file_attribute_value_set_string (value, content_type);
1673 }
1674
1675 /**
1676  * g_file_info_set_size:
1677  * @info: a #GFileInfo.
1678  * @size: a #goffset containing the file's size.
1679  *
1680  * Sets the %G_FILE_ATTRIBUTE_STANDARD_SIZE attribute in the file info
1681  * to the given size.
1682  **/
1683 void
1684 g_file_info_set_size (GFileInfo *info,
1685                       goffset    size)
1686 {
1687   static guint32 attr = 0;
1688   GFileAttributeValue *value;
1689
1690   g_return_if_fail (G_IS_FILE_INFO (info));
1691
1692   if (attr == 0)
1693     attr = lookup_attribute (G_FILE_ATTRIBUTE_STANDARD_SIZE);
1694
1695   value = g_file_info_create_value (info, attr);
1696   if (value)
1697     _g_file_attribute_value_set_uint64 (value, size);
1698 }
1699
1700 /**
1701  * g_file_info_set_modification_time
1702  * @info: a #GFileInfo.
1703  * @mtime: a #GTimeVal.
1704  *
1705  * Sets the %G_FILE_ATTRIBUTE_TIME_MODIFIED attribute in the file
1706  * info to the given time value.
1707  **/
1708 void
1709 g_file_info_set_modification_time (GFileInfo *info,
1710                                    GTimeVal  *mtime)
1711 {
1712   static guint32 attr_mtime = 0, attr_mtime_usec;
1713   GFileAttributeValue *value;
1714
1715   g_return_if_fail (G_IS_FILE_INFO (info));
1716   g_return_if_fail (mtime != NULL);
1717
1718   if (attr_mtime == 0)
1719     {
1720       attr_mtime = lookup_attribute (G_FILE_ATTRIBUTE_TIME_MODIFIED);
1721       attr_mtime_usec = lookup_attribute (G_FILE_ATTRIBUTE_TIME_MODIFIED_USEC);
1722     }
1723
1724   value = g_file_info_create_value (info, attr_mtime);
1725   if (value)
1726     _g_file_attribute_value_set_uint64 (value, mtime->tv_sec);
1727   value = g_file_info_create_value (info, attr_mtime_usec);
1728   if (value)
1729     _g_file_attribute_value_set_uint32 (value, mtime->tv_usec);
1730 }
1731
1732 /**
1733  * g_file_info_set_symlink_target:
1734  * @info: a #GFileInfo.
1735  * @symlink_target: a static string containing a path to a symlink target.
1736  *
1737  * Sets the %G_FILE_ATTRIBUTE_STANDARD_SYMLINK_TARGET attribute in the file info
1738  * to the given symlink target.
1739  **/
1740 void
1741 g_file_info_set_symlink_target (GFileInfo  *info,
1742                                 const char *symlink_target)
1743 {
1744   static guint32 attr = 0;
1745   GFileAttributeValue *value;
1746
1747   g_return_if_fail (G_IS_FILE_INFO (info));
1748   g_return_if_fail (symlink_target != NULL);
1749
1750   if (attr == 0)
1751     attr = lookup_attribute (G_FILE_ATTRIBUTE_STANDARD_SYMLINK_TARGET);
1752
1753   value = g_file_info_create_value (info, attr);
1754   if (value)
1755     _g_file_attribute_value_set_byte_string (value, symlink_target);
1756 }
1757
1758 /**
1759  * g_file_info_set_sort_order:
1760  * @info: a #GFileInfo.
1761  * @sort_order: a sort order integer.
1762  *
1763  * Sets the sort order attribute in the file info structure. See
1764  * %G_FILE_ATTRIBUTE_STANDARD_SORT_ORDER.
1765  **/
1766 void
1767 g_file_info_set_sort_order (GFileInfo *info,
1768                             gint32     sort_order)
1769 {
1770   static guint32 attr = 0;
1771   GFileAttributeValue *value;
1772
1773   g_return_if_fail (G_IS_FILE_INFO (info));
1774
1775   if (attr == 0)
1776     attr = lookup_attribute (G_FILE_ATTRIBUTE_STANDARD_SORT_ORDER);
1777
1778   value = g_file_info_create_value (info, attr);
1779   if (value)
1780     _g_file_attribute_value_set_int32 (value, sort_order);
1781 }
1782
1783
1784 #define ON_STACK_MATCHERS 5
1785
1786 typedef struct {
1787   guint32 id;
1788   guint32 mask;
1789 } SubMatcher;
1790
1791 struct _GFileAttributeMatcher {
1792   gboolean all;
1793   SubMatcher sub_matchers[ON_STACK_MATCHERS];
1794   GArray *more_sub_matchers;
1795
1796   /* Interator */
1797   guint32 iterator_ns;
1798   int iterator_pos;
1799   int ref;
1800 };
1801
1802 static void
1803 matcher_add (GFileAttributeMatcher *matcher,
1804              guint                  id,
1805              guint                  mask)
1806 {
1807   SubMatcher *sub_matchers;
1808   int i;
1809   SubMatcher s;
1810
1811   for (i = 0; i < ON_STACK_MATCHERS; i++)
1812     {
1813       /* First empty spot, not found, use this */
1814       if (matcher->sub_matchers[i].id == 0)
1815         {
1816           matcher->sub_matchers[i].id = id;
1817           matcher->sub_matchers[i].mask = mask;
1818           return;
1819         }
1820
1821       /* Already added */
1822       if (matcher->sub_matchers[i].id == id &&
1823           matcher->sub_matchers[i].mask == mask)
1824         return;
1825     }
1826
1827   if (matcher->more_sub_matchers == NULL)
1828     matcher->more_sub_matchers = g_array_new (FALSE, FALSE, sizeof (SubMatcher));
1829
1830   sub_matchers = (SubMatcher *)matcher->more_sub_matchers->data;
1831   for (i = 0; i < matcher->more_sub_matchers->len; i++)
1832     {
1833       /* Already added */
1834       if (sub_matchers[i].id == id &&
1835           sub_matchers[i].mask == mask)
1836         return;
1837     }
1838
1839   s.id = id;
1840   s.mask = mask;
1841
1842   g_array_append_val (matcher->more_sub_matchers, s);
1843 }
1844
1845 /**
1846  * g_file_attribute_matcher_new:
1847  * @attributes: an attribute string to match.
1848  *
1849  * Creates a new file attribute matcher, which matches attributes
1850  * against a given string. #GFileAttributeMatcher<!-- -->s are reference
1851  * counted structures, and are created with a reference count of 1. If
1852  * the number of references falls to 0, the #GFileAttributeMatcher is
1853  * automatically destroyed.
1854  *
1855  * The @attribute string should be formatted with specific keys separated
1856  * from namespaces with a double colon. Several "namespace::key" strings may be
1857  * concatenated with a single comma (e.g. "standard::type,standard::is-hidden").
1858  * The wildcard "*" may be used to match all keys and namespaces, or
1859  * "namespace::*" will match all keys in a given namespace.
1860  *
1861  * Examples of strings to use:
1862  * <table>
1863  * <title>File Attribute Matcher strings and results</title>
1864  * <tgroup cols='2' align='left'><thead>
1865  * <row><entry> Matcher String </entry><entry> Matches </entry></row></thead>
1866  * <tbody>
1867  * <row><entry>"*"</entry><entry>matches all attributes.</entry></row>
1868  * <row><entry>"standard::is-hidden"</entry><entry>matches only the key is-hidden in the standard namespace.</entry></row>
1869  * <row><entry>"standard::type,unix::*"</entry><entry>matches the type key in the standard namespace and
1870  * all keys in the unix namespace.</entry></row>
1871  * </tbody></tgroup>
1872  * </table>
1873  *
1874  * Returns: a #GFileAttributeMatcher.
1875  **/
1876 GFileAttributeMatcher *
1877 g_file_attribute_matcher_new (const char *attributes)
1878 {
1879   char **split;
1880   char *colon;
1881   int i;
1882   GFileAttributeMatcher *matcher;
1883
1884   if (attributes == NULL || *attributes == '\0')
1885     return NULL;
1886
1887   matcher = g_malloc0 (sizeof (GFileAttributeMatcher));
1888   matcher->ref = 1;
1889
1890   split = g_strsplit (attributes, ",", -1);
1891
1892   for (i = 0; split[i] != NULL; i++)
1893     {
1894       if (strcmp (split[i], "*") == 0)
1895         matcher->all = TRUE;
1896       else
1897         {
1898           guint32 id, mask;
1899
1900           colon = strstr (split[i], "::");
1901           if (colon != NULL &&
1902               !(colon[2] == 0 ||
1903                 (colon[2] == '*' &&
1904                  colon[3] == 0)))
1905             {
1906               id = lookup_attribute (split[i]);
1907               mask = 0xffffffff;
1908             }
1909           else
1910             {
1911               if (colon)
1912                 *colon = 0;
1913
1914               id = lookup_namespace (split[i]) << NS_POS;
1915               mask = NS_MASK << NS_POS;
1916             }
1917
1918           matcher_add (matcher, id, mask);
1919         }
1920     }
1921
1922   g_strfreev (split);
1923
1924   return matcher;
1925 }
1926
1927 /**
1928  * g_file_attribute_matcher_ref:
1929  * @matcher: a #GFileAttributeMatcher.
1930  *
1931  * References a file attribute matcher.
1932  *
1933  * Returns: a #GFileAttributeMatcher.
1934  **/
1935 GFileAttributeMatcher *
1936 g_file_attribute_matcher_ref (GFileAttributeMatcher *matcher)
1937 {
1938   if (matcher)
1939     {
1940       g_return_val_if_fail (matcher->ref > 0, NULL);
1941       g_atomic_int_inc (&matcher->ref);
1942     }
1943   return matcher;
1944 }
1945
1946 /**
1947  * g_file_attribute_matcher_unref:
1948  * @matcher: a #GFileAttributeMatcher.
1949  *
1950  * Unreferences @matcher. If the reference count falls below 1,
1951  * the @matcher is automatically freed.
1952  *
1953  **/
1954 void
1955 g_file_attribute_matcher_unref (GFileAttributeMatcher *matcher)
1956 {
1957   if (matcher)
1958     {
1959       g_return_if_fail (matcher->ref > 0);
1960
1961       if (g_atomic_int_dec_and_test (&matcher->ref))
1962         {
1963           if (matcher->more_sub_matchers)
1964             g_array_free (matcher->more_sub_matchers, TRUE);
1965
1966           g_free (matcher);
1967         }
1968     }
1969 }
1970
1971 /**
1972  * g_file_attribute_matcher_matches_only:
1973  * @matcher: a #GFileAttributeMatcher.
1974  * @attribute: a file attribute key.
1975  *
1976  * Checks if a attribute matcher only matches a given attribute. Always
1977  * returns %FALSE if "*" was used when creating the matcher.
1978  *
1979  * Returns: %TRUE if the matcher only matches @attribute. %FALSE otherwise.
1980  **/
1981 gboolean
1982 g_file_attribute_matcher_matches_only (GFileAttributeMatcher *matcher,
1983                                        const char            *attribute)
1984 {
1985   guint32 id;
1986
1987   g_return_val_if_fail (attribute != NULL && *attribute != '\0', FALSE);
1988
1989   if (matcher == NULL ||
1990       matcher->all)
1991     return FALSE;
1992
1993   id = lookup_attribute (attribute);
1994
1995   if (matcher->sub_matchers[0].id != 0 &&
1996       matcher->sub_matchers[1].id == 0 &&
1997       matcher->sub_matchers[0].mask == 0xffffffff &&
1998       matcher->sub_matchers[0].id == id)
1999     return TRUE;
2000
2001   return FALSE;
2002 }
2003
2004 static gboolean
2005 matcher_matches_id (GFileAttributeMatcher *matcher,
2006                     guint32                id)
2007 {
2008   SubMatcher *sub_matchers;
2009   int i;
2010
2011   for (i = 0; i < ON_STACK_MATCHERS; i++)
2012     {
2013       if (matcher->sub_matchers[i].id == 0)
2014         return FALSE;
2015
2016       if (matcher->sub_matchers[i].id == (id & matcher->sub_matchers[i].mask))
2017         return TRUE;
2018     }
2019
2020   if (matcher->more_sub_matchers)
2021     {
2022       sub_matchers = (SubMatcher *)matcher->more_sub_matchers->data;
2023       for (i = 0; i < matcher->more_sub_matchers->len; i++)
2024         {
2025           if (sub_matchers[i].id == (id & sub_matchers[i].mask))
2026             return TRUE;
2027         }
2028     }
2029
2030   return FALSE;
2031 }
2032
2033 static gboolean
2034 g_file_attribute_matcher_matches_id (GFileAttributeMatcher *matcher,
2035                                      guint32                id)
2036 {
2037   /* We return a NULL matcher for an empty match string, so handle this */
2038   if (matcher == NULL)
2039     return FALSE;
2040
2041   if (matcher->all)
2042     return TRUE;
2043
2044   return matcher_matches_id (matcher, id);
2045 }
2046
2047 /**
2048  * g_file_attribute_matcher_matches:
2049  * @matcher: a #GFileAttributeMatcher.
2050  * @attribute: a file attribute key.
2051  *
2052  * Checks if an attribute will be matched by an attribute matcher. If
2053  * the matcher was created with the "*" matching string, this function
2054  * will always return %TRUE.
2055  *
2056  * Returns: %TRUE if @attribute matches @matcher. %FALSE otherwise.
2057  **/
2058 gboolean
2059 g_file_attribute_matcher_matches (GFileAttributeMatcher *matcher,
2060                                   const char            *attribute)
2061 {
2062   g_return_val_if_fail (attribute != NULL && *attribute != '\0', FALSE);
2063
2064   /* We return a NULL matcher for an empty match string, so handle this */
2065   if (matcher == NULL)
2066     return FALSE;
2067
2068   if (matcher->all)
2069     return TRUE;
2070
2071   return matcher_matches_id (matcher, lookup_attribute (attribute));
2072 }
2073
2074 /* return TRUE -> all */
2075 /**
2076  * g_file_attribute_matcher_enumerate_namespace:
2077  * @matcher: a #GFileAttributeMatcher.
2078  * @ns: a string containing a file attribute namespace.
2079  *
2080  * Checks if the matcher will match all of the keys in a given namespace.
2081  * This will always return %TRUE if a wildcard character is in use (e.g. if
2082  * matcher was created with "standard::*" and @ns is "standard", or if matcher was created
2083  * using "*" and namespace is anything.)
2084  *
2085  * TODO: this is awkwardly worded.
2086  *
2087  * Returns: %TRUE if the matcher matches all of the entries
2088  * in the given @ns, %FALSE otherwise.
2089  **/
2090 gboolean
2091 g_file_attribute_matcher_enumerate_namespace (GFileAttributeMatcher *matcher,
2092                                               const char            *ns)
2093 {
2094   SubMatcher *sub_matchers;
2095   int ns_id;
2096   int i;
2097
2098   g_return_val_if_fail (ns != NULL && *ns != '\0', FALSE);
2099
2100   /* We return a NULL matcher for an empty match string, so handle this */
2101   if (matcher == NULL)
2102     return FALSE;
2103
2104   if (matcher->all)
2105     return TRUE;
2106
2107   ns_id = lookup_namespace (ns) << NS_POS;
2108
2109   for (i = 0; i < ON_STACK_MATCHERS; i++)
2110     {
2111       if (matcher->sub_matchers[i].id == ns_id)
2112         return TRUE;
2113     }
2114
2115   if (matcher->more_sub_matchers)
2116     {
2117       sub_matchers = (SubMatcher *)matcher->more_sub_matchers->data;
2118       for (i = 0; i < matcher->more_sub_matchers->len; i++)
2119         {
2120           if (sub_matchers[i].id == ns_id)
2121             return TRUE;
2122         }
2123     }
2124
2125   matcher->iterator_ns = ns_id;
2126   matcher->iterator_pos = 0;
2127
2128   return FALSE;
2129 }
2130
2131 /**
2132  * g_file_attribute_matcher_enumerate_next:
2133  * @matcher: a #GFileAttributeMatcher.
2134  *
2135  * Gets the next matched attribute from a #GFileAttributeMatcher.
2136  *
2137  * Returns: a string containing the next attribute or %NULL if
2138  * no more attribute exist.
2139  **/
2140 const char *
2141 g_file_attribute_matcher_enumerate_next (GFileAttributeMatcher *matcher)
2142 {
2143   int i;
2144   SubMatcher *sub_matcher;
2145
2146   /* We return a NULL matcher for an empty match string, so handle this */
2147   if (matcher == NULL)
2148     return NULL;
2149
2150   while (1)
2151     {
2152       i = matcher->iterator_pos++;
2153
2154       if (i < ON_STACK_MATCHERS)
2155         {
2156           if (matcher->sub_matchers[i].id == 0)
2157             return NULL;
2158
2159           sub_matcher = &matcher->sub_matchers[i];
2160         }
2161       else
2162         {
2163           if (matcher->more_sub_matchers == NULL)
2164             return NULL;
2165
2166           i -= ON_STACK_MATCHERS;
2167           if (i < matcher->more_sub_matchers->len)
2168             sub_matcher = &g_array_index (matcher->more_sub_matchers, SubMatcher, i);
2169           else
2170             return NULL;
2171         }
2172
2173       if (sub_matcher->mask == 0xffffffff &&
2174           (sub_matcher->id & (NS_MASK << NS_POS)) == matcher->iterator_ns)
2175         return get_attribute_for_id (sub_matcher->id);
2176     }
2177 }
2178
2179 #define __G_FILE_INFO_C__
2180 #include "gioaliasdef.c"