gio/gfileattribute.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 #include "config.h"
  24
  25 #include <string.h>
  26
  27 #include "gfileattribute.h"
  28 #include "gfileattribute-priv.h"
  29 #include <glib-object.h>
  30 #include "glibintl.h"
  31
  32 #include "gioalias.h"
  33
  34 /**
  35  * SECTION:gfileattribute
  36  * @short_description: Key-Value Paired File Attributes
  37  * @include: gio/gio.h
  38  * @see_also: #GFile, #GFileInfo
  39  *
  40  * File attributes in GIO consist of a list of key-value pairs.
  41  *
  42  * Keys are strings that contain a key namespace and a key name, separated
  43  * by a colon, e.g. "namespace:keyname". Namespaces are included to sort
  44  * key-value pairs by namespaces for relevance. Keys can be retrived
  45  * using wildcards, e.g. "standard::*" will return all of the keys in the
  46  * "standard" namespace.
  47  *
  48  * Values are stored within the list in #GFileAttributeValue structures.
  49  * Values can store different types, listed in the enum #GFileAttributeType.
  50  * Upon creation of a #GFileAttributeValue, the type will be set to
  51  * %G_FILE_ATTRIBUTE_TYPE_INVALID.
  52  *
  53  * The list of possible attributes for a filesystem (pointed to by a #GFile) is
  54  * availible as a #GFileAttributeInfoList. This list is queryable by key names
  55  * as indicated earlier.
  56  *
  57  * Classes that implement #GFileIface will create a #GFileAttributeInfoList and
  58  * install default keys and values for their given file system, architecture,
  59  * and other possible implementation details (e.g., on a UNIX system, a file
  60  * attribute key will be registered for the user id for a given file).
  61  *
  62  * <para>
  63  * <table>
  64  * <title>GFileAttributes Default Namespaces</title>
  65  * <tgroup cols='2' align='left'><thead>
  66  * <row><entry>Namspace</entry><entry>Description</entry></row>
  67  * </thead>
  68  * <tbody>
  69  * <row><entry>"standard"</entry><entry>The "Standard" namespace. General file
  70  * information that any application may need should be put in this namespace.
  71  * Examples include the file's name, type, and size.</entry></row>
  72  * <row><entry>"etag"</entry><entry>The <link linkend="gfile-etag">"Entity Tag"</link>
  73  * namespace. Currently, the only key in this namespace is "value", which contains
  74  * the value of the current entity tag.</entry></row>
  75  * <row><entry>"id"</entry><entry>The "Identification" namespace. This
  76  * namespace is used by file managers and applications that list directories
  77  * to check for loops and to uniquely identify files.</entry></row>
  78  * <row><entry>"access"</entry><entry>The "Access" namespace. Used to check
  79  * if a user has the proper privilidges to access files and perform
  80  * file operations. Keys in this namespace are made to be generic
  81  * and easily understood, e.g. the "can_read" key is %TRUE if
  82  * the current user has permission to read the file. UNIX permissions and
  83  * NTFS ACLs in Windows should be mapped to these values.</entry></row>
  84  * <row><entry>"mountable"</entry><entry>The "Mountable" namespace. Includes
  85  * simple boolean keys for checking if a file or path supports mount operations, e.g.
  86  * mount, unmount, eject. These are used for files of type %G_FILE_TYPE_MOUNTABLE.</entry></row>
  87  * <row><entry>"time"</entry><entry>The "Time" namespace. Includes file
  88  * access, changed, created times. </entry></row>
  89  * <row><entry>"unix"</entry><entry>The "Unix" namespace. Includes UNIX-specific
  90  * information and may not be available for all files. Examples include
  91  * the UNIX "UID", "GID", etc.</entry></row>
  92  * <row><entry>"dos"</entry><entry>The "DOS" namespace. Includes DOS-specific
  93  * information and may not be available for all files. Examples include
  94  * "is_system" for checking if a file is marked as a system file, and "is_archive"
  95  * for checking if a file is marked as an archive file.</entry></row>
  96  * <row><entry>"owner"</entry><entry>The "Owner" namespace. Includes information
  97  * about who owns a file. May not be available for all file systems. Examples include
  98  * "user" for getting the user name of the file owner. This information is often mapped from
  99  * some backend specific data such as a unix UID.</entry></row>
 100  * <row><entry>"thumbnail"</entry><entry>The "Thumbnail" namespace. Includes
 101  * information about file thumbnails and their location within the file system. Exaples of
 102  * keys in this namespace include "path" to get the location of a thumbnail, and "failed"
 103  * to check if thumbnailing of the file failed.</entry></row>
 104  * <row><entry>"filesystem"</entry><entry>The "Filesystem" namespace. Gets information
 105  * about the file system where a file is located, such as its type, how much
 106  * space is left available, and the overall size of the file system.</entry></row>
 107  * <row><entry>"gvfs"</entry><entry>The "GVFS" namespace. Keys in this namespace
 108  * contain information about the current GVFS backend in use. </entry></row>
 109  * <row><entry>"xattr"</entry><entry>The "xattr" namespace. Gets information
 110  * about extended user attributes. See attr(5). The "user." prefix of the
 111  * extended user attribute name is stripped away when constructing keys in
 112  * this namespace, e.g. "xattr::mime_type" for the extended attribute with
 113  * the name "user.mime_type". Note that this information is only available
 114  * if GLib has been built with extended attribute support.</entry></row>
 115  * <row><entry>"xattr-sys"</entry><entry>The "xattr-sys" namespace.
 116  * Gets information about extended attributes which are not user-specific.
 117  * See attr(5). Note that this information is only available if GLib
 118  * has been built with extended attribute support.</entry></row>
 119  * <row><entry>"selinux"</entry><entry>The "SELinux" namespace. Includes
 120  * information about the SELinux context of files. Note that this information
 121  * is only available if GLib has been built with SELinux support.</entry></row>
 122  * </tbody>
 123  * </tgroup>
 124  * </table>
 125  * </para>
 126  *
 127  * Please note that these are not all of the possible namespaces.
 128  * More namespaces can be added from GIO modules or by individual applications.
 129  * For more information about writing GIO modules, see #GIOModule.
 130  *
 131  * <!-- TODO: Implementation note about using extended attributes on supported
 132  * file systems -->
 133  *
 134  * <para><table>
 135  * <title>GFileAttributes Built-in Keys and Value Types</title>
 136  * <tgroup cols='3' align='left'><thead>
 137  * <row><entry>Enum Value</entry><entry>Namespace:Key</entry><entry>Value Type</entry></row>
 138  * </thead><tbody>
 139  * <row><entry>%G_FILE_ATTRIBUTE_STANDARD_TYPE</entry><entry>standard::type</entry><entry>uint32 (#GFileType)</entry></row>
 140  * <row><entry>%G_FILE_ATTRIBUTE_STANDARD_IS_HIDDEN</entry><entry>standard::is-hidden</entry><entry>boolean</entry></row>
 141  * <row><entry>%G_FILE_ATTRIBUTE_STANDARD_IS_BACKUP</entry><entry>standard::is-backup</entry><entry>boolean</entry></row>
 142  * <row><entry>%G_FILE_ATTRIBUTE_STANDARD_IS_SYMLINK</entry><entry>standard::is-symlink</entry><entry>boolean</entry></row>
 143  * <row><entry>%G_FILE_ATTRIBUTE_STANDARD_IS_VIRTUAL</entry><entry>standard::is-virtual</entry><entry>boolean</entry></row>
 144  * <row><entry>%G_FILE_ATTRIBUTE_STANDARD_NAME</entry><entry>standard::name</entry><entry>byte string</entry></row>
 145  * <row><entry>%G_FILE_ATTRIBUTE_STANDARD_DISPLAY_NAME</entry><entry>standard::display-name</entry><entry>string</entry></row>
 146  * <row><entry>%G_FILE_ATTRIBUTE_STANDARD_EDIT_NAME</entry><entry>standard::edit-name</entry><entry>string</entry></row>
 147  * <row><entry>%G_FILE_ATTRIBUTE_STANDARD_ICON</entry><entry>standard::icon</entry><entry>object (#GIcon)</entry></row>
 148  * <row><entry>%G_FILE_ATTRIBUTE_STANDARD_CONTENT_TYPE</entry><entry>standard::content-type</entry><entry>string</entry></row>
 149  * <row><entry>%G_FILE_ATTRIBUTE_STANDARD_FAST_CONTENT_TYPE</entry><entry>standard::fast-content-type</entry><entry>string</entry></row>
 150  * <row><entry>%G_FILE_ATTRIBUTE_STANDARD_SIZE</entry><entry>standard::size</entry><entry>uint64</entry></row>
 151  * <row><entry>%G_FILE_ATTRIBUTE_STANDARD_SYMLINK_TARGET</entry><entry>standard::symlink-target</entry><entry>byte string</entry></row>
 152  * <row><entry>%G_FILE_ATTRIBUTE_STANDARD_TARGET_URI</entry><entry>standard::target-uri</entry><entry>string</entry></row>
 153  * <row><entry>%G_FILE_ATTRIBUTE_STANDARD_SORT_ORDER</entry><entry>standard::sort-order</entry><entry>int32</entry></row>
 154  * <row><entry>%G_FILE_ATTRIBUTE_ETAG_VALUE</entry><entry>etag::value</entry><entry>string</entry></row>
 155  * <row><entry>%G_FILE_ATTRIBUTE_ID_FILE</entry><entry>id::file</entry><entry>string</entry></row>
 156  * <row><entry>%G_FILE_ATTRIBUTE_ID_FILESYSTEM</entry><entry>id::filesystem</entry><entry>string</entry></row>
 157  * <row><entry>%G_FILE_ATTRIBUTE_ACCESS_CAN_READ</entry><entry>access::can-read</entry><entry>boolean</entry></row>
 158  * <row><entry>%G_FILE_ATTRIBUTE_ACCESS_CAN_WRITE</entry><entry>access::can-write</entry><entry>boolean</entry></row>
 159  * <row><entry>%G_FILE_ATTRIBUTE_ACCESS_CAN_EXECUTE</entry><entry>access::can-execute</entry><entry>boolean</entry></row>
 160  * <row><entry>%G_FILE_ATTRIBUTE_ACCESS_CAN_DELETE</entry><entry>access::can-delete</entry><entry>boolean</entry></row>
 161  * <row><entry>%G_FILE_ATTRIBUTE_ACCESS_CAN_TRASH</entry><entry>access::can-trash</entry><entry>boolean</entry></row>
 162  * <row><entry>%G_FILE_ATTRIBUTE_ACCESS_CAN_RENAME</entry><entry>access::can-rename</entry><entry>boolean</entry></row>
 163  * <row><entry>%G_FILE_ATTRIBUTE_MOUNTABLE_CAN_MOUNT</entry><entry>mountable::can-mount</entry><entry>boolean</entry></row>
 164  * <row><entry>%G_FILE_ATTRIBUTE_MOUNTABLE_CAN_UNMOUNT</entry><entry>mountable::can-unmount</entry><entry>boolean</entry></row>
 165  * <row><entry>%G_FILE_ATTRIBUTE_MOUNTABLE_CAN_EJECT</entry><entry>mountable::can-eject</entry><entry>boolean</entry></row>
 166  * <row><entry>%G_FILE_ATTRIBUTE_MOUNTABLE_UNIX_DEVICE</entry><entry>mountable::unix-device</entry><entry>uint32</entry></row>
 167  * <row><entry>%G_FILE_ATTRIBUTE_MOUNTABLE_HAL_UDI</entry><entry>mountable::hal-udi</entry><entry>string</entry></row>
 168  * <row><entry>%G_FILE_ATTRIBUTE_TIME_MODIFIED</entry><entry>time::modified</entry><entry>uint64</entry></row>
 169  * <row><entry>%G_FILE_ATTRIBUTE_TIME_MODIFIED_USEC</entry><entry>time::modified-usec</entry><entry>uint32</entry></row>
 170  * <row><entry>%G_FILE_ATTRIBUTE_TIME_ACCESS</entry><entry>time::access</entry><entry>uint64</entry></row>
 171  * <row><entry>%G_FILE_ATTRIBUTE_TIME_ACCESS_USEC</entry><entry>time::access-usec</entry><entry>uint32</entry></row>
 172  * <row><entry>%G_FILE_ATTRIBUTE_TIME_CHANGED</entry><entry>time::changed</entry><entry>uint64</entry></row>
 173  * <row><entry>%G_FILE_ATTRIBUTE_TIME_CHANGED_USEC</entry><entry>time::changed-usec</entry><entry>uint32</entry></row>
 174  * <row><entry>%G_FILE_ATTRIBUTE_TIME_CREATED</entry><entry>time::created</entry><entry>uint64</entry></row>
 175  * <row><entry>%G_FILE_ATTRIBUTE_TIME_CREATED_USEC</entry><entry>time::created-usec</entry><entry>uint32</entry></row>
 176  * <row><entry>%G_FILE_ATTRIBUTE_UNIX_DEVICE</entry><entry>unix::device</entry><entry>uint32</entry></row>
 177  * <row><entry>%G_FILE_ATTRIBUTE_UNIX_INODE</entry><entry>unix::inode</entry><entry>uint64</entry></row>
 178  * <row><entry>%G_FILE_ATTRIBUTE_UNIX_MODE</entry><entry>unix::mode</entry><entry>uint32</entry></row>
 179  * <row><entry>%G_FILE_ATTRIBUTE_UNIX_NLINK</entry><entry>unix::nlink</entry><entry>uint32</entry></row>
 180  * <row><entry>%G_FILE_ATTRIBUTE_UNIX_UID</entry><entry>unix::uid</entry><entry>uint32</entry></row>
 181  * <row><entry>%G_FILE_ATTRIBUTE_UNIX_GID</entry><entry>unix::gid</entry><entry>uint32</entry></row>
 182  * <row><entry>%G_FILE_ATTRIBUTE_UNIX_RDEV</entry><entry>unix::rdev</entry><entry>uint32</entry></row>
 183  * <row><entry>%G_FILE_ATTRIBUTE_UNIX_BLOCK_SIZE</entry><entry>unix::block-size</entry><entry>uint32</entry></row>
 184  * <row><entry>%G_FILE_ATTRIBUTE_UNIX_BLOCKS</entry><entry>unix::blocks</entry><entry>uint64</entry></row>
 185  * <row><entry>%G_FILE_ATTRIBUTE_UNIX_IS_MOUNTPOINT</entry><entry>unix::is-mountpoint</entry><entry>boolean</entry></row>
 186  * <row><entry>%G_FILE_ATTRIBUTE_DOS_IS_ARCHIVE</entry><entry>dos::is-archive</entry><entry>boolean</entry></row>
 187  * <row><entry>%G_FILE_ATTRIBUTE_DOS_IS_SYSTEM</entry><entry>dos::is-system</entry><entry>boolean</entry></row>
 188  * <row><entry>%G_FILE_ATTRIBUTE_OWNER_USER</entry><entry>owner::user</entry><entry>string</entry></row>
 189  * <row><entry>%G_FILE_ATTRIBUTE_OWNER_USER_REAL</entry><entry>owner::user-real</entry><entry>string</entry></row>
 190  * <row><entry>%G_FILE_ATTRIBUTE_OWNER_GROUP</entry><entry>owner::group</entry><entry>string</entry></row>
 191  * <row><entry>%G_FILE_ATTRIBUTE_THUMBNAIL_PATH</entry><entry>thumbnail::path</entry><entry>bytestring</entry></row>
 192  * <row><entry>%G_FILE_ATTRIBUTE_THUMBNAILING_FAILED</entry><entry>thumbnail::failed</entry><entry>boolean</entry></row>
 193  * <row><entry>%G_FILE_ATTRIBUTE_FILESYSTEM_SIZE</entry><entry>filesystem::size</entry><entry>uint64</entry></row>
 194  * <row><entry>%G_FILE_ATTRIBUTE_FILESYSTEM_FREE</entry><entry>filesystem::free</entry><entry>uint64</entry></row>
 195  * <row><entry>%G_FILE_ATTRIBUTE_FILESYSTEM_TYPE</entry><entry>filesystem::type</entry><entry>string</entry></row>
 196  * <row><entry>%G_FILE_ATTRIBUTE_FILESYSTEM_READONLY</entry><entry>filesystem::readonly</entry><entry>boolean</entry></row>
 197  * <row><entry>%G_FILE_ATTRIBUTE_GVFS_BACKEND</entry><entry>gvfs::backend</entry><entry>string</entry></row>
 198  * <row><entry>%G_FILE_ATTRIBUTE_SELINUX_CONTEXT</entry><entry>selinux::context</entry><entry>string</entry></row>
 199  * </tbody></tgroup></table></para>
 200  *
 201  * Note that there are no predefined keys in the "xattr" and "xattr-sys"
 202  * namespaces. Keys for the "xattr" namespace are constructed by stripping
 203  * away the "user." prefix from the extended user attribute, and prepending
 204  * "xattr::". Keys for the "xattr-sys" namespace are constructed by
 205  * concatenating "xattr-sys::" with the extended attribute name. All extended
 206  * attribute values are returned as hex-encoded strings in which bytes outside
 207  * the ASCII range are encoded as hexadecimal escape sequences of the form
 208  * \x<replaceable>nn</replaceable>.
 209  **/
 210
 211 /*
 212  * _g_file_attribute_value_free:
 213  * @attr: a #GFileAttributeValue.
 214  *
 215  * Frees the memory used by @attr.
 216  *
 217  **/
 218 void
 219 _g_file_attribute_value_free (GFileAttributeValue *attr)
 220 {
 221   g_return_if_fail (attr != NULL);
 222
 223   _g_file_attribute_value_clear (attr);
 224   g_free (attr);
 225 }
 226
 227 /*
 228  * _g_file_attribute_value_clear:
 229  * @attr: a #GFileAttributeValue.
 230  *
 231  * Clears the value of @attr and sets its type to
 232  * %G_FILE_ATTRIBUTE_TYPE_INVALID.
 233  *
 234  **/
 235 void
 236 _g_file_attribute_value_clear (GFileAttributeValue *attr)
 237 {
 238   g_return_if_fail (attr != NULL);
 239
 240   if (attr->type == G_FILE_ATTRIBUTE_TYPE_STRING ||
 241       attr->type == G_FILE_ATTRIBUTE_TYPE_BYTE_STRING)
 242     g_free (attr->u.string);
 243
 244   if (attr->type == G_FILE_ATTRIBUTE_TYPE_OBJECT &&
 245       attr->u.obj != NULL)
 246     g_object_unref (attr->u.obj);
 247
 248   attr->type = G_FILE_ATTRIBUTE_TYPE_INVALID;
 249 }
 250
 251 /*
 252  * g_file_attribute_value_set:
 253  * @attr: a #GFileAttributeValue to set the value in.
 254  * @new_value: a #GFileAttributeValue to get the value from.
 255  *
 256  * Sets an attribute's value from another attribute.
 257  **/
 258 void
 259 _g_file_attribute_value_set (GFileAttributeValue        *attr,
 260                              const GFileAttributeValue *new_value)
 261 {
 262   g_return_if_fail (attr != NULL);
 263   g_return_if_fail (new_value != NULL);
 264
 265   _g_file_attribute_value_clear (attr);
 266   *attr = *new_value;
 267
 268   if (attr->type == G_FILE_ATTRIBUTE_TYPE_STRING ||
 269       attr->type == G_FILE_ATTRIBUTE_TYPE_BYTE_STRING)
 270     attr->u.string = g_strdup (attr->u.string);
 271
 272   if (attr->type == G_FILE_ATTRIBUTE_TYPE_OBJECT &&
 273       attr->u.obj != NULL)
 274     g_object_ref (attr->u.obj);
 275 }
 276
 277 /*
 278  * _g_file_attribute_value_new:
 279  *
 280  * Creates a new file attribute.
 281  *
 282  * Returns: a #GFileAttributeValue.
 283  **/
 284 GFileAttributeValue *
 285 _g_file_attribute_value_new (void)
 286 {
 287   GFileAttributeValue *attr;
 288
 289   attr = g_new (GFileAttributeValue, 1);
 290   attr->type = G_FILE_ATTRIBUTE_TYPE_INVALID;
 291   return attr;
 292 }
 293
 294 gpointer
 295 _g_file_attribute_value_peek_as_pointer (GFileAttributeValue *attr)
 296 {
 297   switch (attr->type) {
 298   case G_FILE_ATTRIBUTE_TYPE_STRING:
 299   case G_FILE_ATTRIBUTE_TYPE_BYTE_STRING:
 300     return attr->u.string;
 301   case G_FILE_ATTRIBUTE_TYPE_OBJECT:
 302     return attr->u.obj;
 303   default:
 304     return (gpointer) &attr->u;
 305   }
 306 }
 307
 308 /*
 309  * g_file_attribute_value_dup:
 310  * @other: a #GFileAttributeValue to duplicate.
 311  *
 312  * Duplicates a file attribute.
 313  *
 314  * Returns: a duplicate of the @other.
 315  **/
 316 GFileAttributeValue *
 317 _g_file_attribute_value_dup (const GFileAttributeValue *other)
 318 {
 319   GFileAttributeValue *attr;
 320
 321   g_return_val_if_fail (other != NULL, NULL);
 322
 323   attr = g_new (GFileAttributeValue, 1);
 324   attr->type = G_FILE_ATTRIBUTE_TYPE_INVALID;
 325   _g_file_attribute_value_set (attr, other);
 326   return attr;
 327 }
 328
 329 static gboolean
 330 valid_char (char c)
 331 {
 332   return c >= 32 && c <= 126 && c != '\\';
 333 }
 334
 335 static char *
 336 escape_byte_string (const char *str)
 337 {
 338   size_t len;
 339   int num_invalid, i;
 340   char *escaped_val, *p;
 341   unsigned char c;
 342   char *hex_digits = "0123456789abcdef";
 343
 344   len = strlen (str);
 345
 346   num_invalid = 0;
 347   for (i = 0; i < len; i++)
 348     {
 349       if (!valid_char (str[i]))
 350         num_invalid++;
 351     }
 352
 353   if (num_invalid == 0)
 354     return g_strdup (str);
 355   else
 356     {
 357       escaped_val = g_malloc (len + num_invalid*3 + 1);
 358
 359       p = escaped_val;
 360       for (i = 0; i < len; i++)
 361         {
 362           c = str[i];
 363           if (valid_char (c))
 364             *p++ = c;
 365           else
 366             {
 367               *p++ = '\\';
 368               *p++ = 'x';
 369               *p++ = hex_digits[(c >> 8) & 0xf];
 370               *p++ = hex_digits[c & 0xf];
 371             }
 372         }
 373       *p++ = 0;
 374       return escaped_val;
 375     }
 376 }
 377
 378 /*
 379  * g_file_attribute_value_as_string:
 380  * @attr: a #GFileAttributeValue.
 381  *
 382  * Converts a #GFileAttributeValue to a string for display.
 383  * The returned string should be freed when no longer needed.
 384  *
 385  * Returns: a string from the @attr, %NULL on error, or "&lt;invalid&gt;"
 386  * if @attr is of type %G_FILE_ATTRIBUTE_TYPE_INVALID.
 387  **/
 388 char *
 389 _g_file_attribute_value_as_string (const GFileAttributeValue *attr)
 390 {
 391   char *str;
 392
 393   g_return_val_if_fail (attr != NULL, NULL);
 394
 395   switch (attr->type)
 396     {
 397     case G_FILE_ATTRIBUTE_TYPE_STRING:
 398       str = g_strdup (attr->u.string);
 399       break;
 400     case G_FILE_ATTRIBUTE_TYPE_BYTE_STRING:
 401       str = escape_byte_string (attr->u.string);
 402       break;
 403     case G_FILE_ATTRIBUTE_TYPE_BOOLEAN:
 404       str = g_strdup_printf ("%s", attr->u.boolean?"TRUE":"FALSE");
 405       break;
 406     case G_FILE_ATTRIBUTE_TYPE_UINT32:
 407       str = g_strdup_printf ("%u", (unsigned int)attr->u.uint32);
 408       break;
 409     case G_FILE_ATTRIBUTE_TYPE_INT32:
 410       str = g_strdup_printf ("%i", (int)attr->u.int32);
 411       break;
 412     case G_FILE_ATTRIBUTE_TYPE_UINT64:
 413       str = g_strdup_printf ("%"G_GUINT64_FORMAT, attr->u.uint64);
 414       break;
 415     case G_FILE_ATTRIBUTE_TYPE_INT64:
 416       str = g_strdup_printf ("%"G_GINT64_FORMAT, attr->u.int64);
 417       break;
 418     case G_FILE_ATTRIBUTE_TYPE_OBJECT:
 419       str = g_strdup_printf ("%s:%p", g_type_name_from_instance
 420                                           ((GTypeInstance *) attr->u.obj),
 421                                       attr->u.obj);
 422       break;
 423     default:
 424       g_warning ("Invalid type in GFileInfo attribute");
 425       str = g_strdup ("<invalid>");
 426       break;
 427     }
 428
 429   return str;
 430 }
 431
 432 /*
 433  * g_file_attribute_value_get_string:
 434  * @attr: a #GFileAttributeValue.
 435  *
 436  * Gets the string from a file attribute value. If the value is not the
 437  * right type then %NULL will be returned.
 438  *
 439  * Returns: the string value contained within the attribute, or %NULL.
 440  **/
 441 const char *
 442 _g_file_attribute_value_get_string (const GFileAttributeValue *attr)
 443 {
 444   if (attr == NULL)
 445     return NULL;
 446
 447   g_return_val_if_fail (attr->type == G_FILE_ATTRIBUTE_TYPE_STRING, NULL);
 448
 449   return attr->u.string;
 450 }
 451
 452 /*
 453  * g_file_attribute_value_get_byte_string:
 454  * @attr: a #GFileAttributeValue.
 455  *
 456  * Gets the byte string from a file attribute value. If the value is not the
 457  * right type then %NULL will be returned.
 458  *
 459  * Returns: the byte string contained within the attribute or %NULL.
 460  **/
 461 const char *
 462 _g_file_attribute_value_get_byte_string (const GFileAttributeValue *attr)
 463 {
 464   if (attr == NULL)
 465     return NULL;
 466
 467   g_return_val_if_fail (attr->type == G_FILE_ATTRIBUTE_TYPE_BYTE_STRING, NULL);
 468
 469   return attr->u.string;
 470 }
 471
 472 /*
 473  * g_file_attribute_value_get_boolean:
 474  * @attr: a #GFileAttributeValue.
 475  *
 476  * Gets the boolean value from a file attribute value. If the value is not the
 477  * right type then %FALSE will be returned.
 478  *
 479  * Returns: the boolean value contained within the attribute, or %FALSE.
 480  **/
 481 gboolean
 482 _g_file_attribute_value_get_boolean (const GFileAttributeValue *attr)
 483 {
 484   if (attr == NULL)
 485     return FALSE;
 486
 487   g_return_val_if_fail (attr->type == G_FILE_ATTRIBUTE_TYPE_BOOLEAN, FALSE);
 488
 489   return attr->u.boolean;
 490 }
 491
 492 /*
 493  * g_file_attribute_value_get_uint32:
 494  * @attr: a #GFileAttributeValue.
 495  *
 496  * Gets the unsigned 32-bit integer from a file attribute value. If the value
 497  * is not the right type then %0 will be returned.
 498  *
 499  * Returns: the unsigned 32-bit integer from the attribute, or %0.
 500  **/
 501 guint32
 502 _g_file_attribute_value_get_uint32 (const GFileAttributeValue *attr)
 503 {
 504   if (attr == NULL)
 505     return 0;
 506
 507   g_return_val_if_fail (attr->type == G_FILE_ATTRIBUTE_TYPE_UINT32, 0);
 508
 509   return attr->u.uint32;
 510 }
 511
 512 /*
 513  * g_file_attribute_value_get_int32:
 514  * @attr: a #GFileAttributeValue.
 515  *
 516  * Gets the signed 32-bit integer from a file attribute value. If the value
 517  * is not the right type then %0 will be returned.
 518  *
 519  * Returns: the signed 32-bit integer from the attribute, or %0.
 520  **/
 521 gint32
 522 _g_file_attribute_value_get_int32 (const GFileAttributeValue *attr)
 523 {
 524   if (attr == NULL)
 525     return 0;
 526
 527   g_return_val_if_fail (attr->type == G_FILE_ATTRIBUTE_TYPE_INT32, 0);
 528
 529   return attr->u.int32;
 530 }
 531
 532 /*
 533  * g_file_attribute_value_get_uint64:
 534  * @attr: a #GFileAttributeValue.
 535  *
 536  * Gets the unsigned 64-bit integer from a file attribute value. If the value
 537  * is not the right type then %0 will be returned.
 538  *
 539  * Returns: the unsigned 64-bit integer from the attribute, or %0.
 540  **/
 541 guint64
 542 _g_file_attribute_value_get_uint64 (const GFileAttributeValue *attr)
 543 {
 544   if (attr == NULL)
 545     return 0;
 546
 547   g_return_val_if_fail (attr->type == G_FILE_ATTRIBUTE_TYPE_UINT64, 0);
 548
 549   return attr->u.uint64;
 550 }
 551
 552 /*
 553  * g_file_attribute_value_get_int64:
 554  * @attr: a #GFileAttributeValue.
 555  *
 556  * Gets the signed 64-bit integer from a file attribute value. If the value
 557  * is not the right type then %0 will be returned.
 558  *
 559  * Returns: the signed 64-bit integer from the attribute, or %0.
 560  **/
 561 gint64
 562 _g_file_attribute_value_get_int64 (const GFileAttributeValue *attr)
 563 {
 564   if (attr == NULL)
 565     return 0;
 566
 567   g_return_val_if_fail (attr->type == G_FILE_ATTRIBUTE_TYPE_INT64, 0);
 568
 569   return attr->u.int64;
 570 }
 571
 572 /*
 573  * g_file_attribute_value_get_object:
 574  * @attr: a #GFileAttributeValue.
 575  *
 576  * Gets the GObject from a file attribute value. If the value
 577  * is not the right type then %NULL will be returned.
 578  *
 579  * Returns: the GObject from the attribute, or %0.
 580  **/
 581 GObject *
 582 _g_file_attribute_value_get_object (const GFileAttributeValue *attr)
 583 {
 584   if (attr == NULL)
 585     return NULL;
 586
 587   g_return_val_if_fail (attr->type == G_FILE_ATTRIBUTE_TYPE_OBJECT, NULL);
 588
 589   return attr->u.obj;
 590 }
 591
 592
 593 void
 594 _g_file_attribute_value_set_from_pointer (GFileAttributeValue *value,
 595                                           GFileAttributeType   type,
 596                                           gpointer             value_p,
 597                                           gboolean             dup)
 598 {
 599   _g_file_attribute_value_clear (value);
 600   value->type = type;
 601   switch (type)
 602     {
 603     case G_FILE_ATTRIBUTE_TYPE_STRING:
 604     case G_FILE_ATTRIBUTE_TYPE_BYTE_STRING:
 605       if (dup)
 606         value->u.string = g_strdup (value_p);
 607       else
 608         value->u.string = value_p;
 609       break;
 610
 611     case G_FILE_ATTRIBUTE_TYPE_OBJECT:
 612       if (dup)
 613         value->u.obj = g_object_ref (value_p);
 614       else
 615         value->u.obj = value_p;
 616       break;
 617
 618     case G_FILE_ATTRIBUTE_TYPE_BOOLEAN:
 619       value->u.boolean = *(gboolean *)value_p;
 620       break;
 621
 622     case G_FILE_ATTRIBUTE_TYPE_UINT32:
 623       value->u.uint32 = *(guint32 *)value_p;
 624       break;
 625
 626     case G_FILE_ATTRIBUTE_TYPE_INT32:
 627       value->u.int32 = *(gint32 *)value_p;
 628       break;
 629
 630     case G_FILE_ATTRIBUTE_TYPE_UINT64:
 631       value->u.uint64 = *(guint64 *)value_p;
 632       break;
 633
 634     case G_FILE_ATTRIBUTE_TYPE_INT64:
 635       value->u.int64 = *(gint64 *)value_p;
 636       break;
 637     default:
 638       g_warning ("Unknown type specified in g_file_info_set_attribute\n");
 639       break;
 640     }
 641 }
 642
 643 /*
 644  * g_file_attribute_value_set_string:
 645  * @attr: a #GFileAttributeValue.
 646  * @string: a string to set within the type.
 647  *
 648  * Sets the attribute value to a given string.
 649  *
 650  **/
 651 void
 652 _g_file_attribute_value_set_string (GFileAttributeValue *attr,
 653                                     const char          *string)
 654 {
 655   g_return_if_fail (attr != NULL);
 656   g_return_if_fail (string != NULL);
 657
 658   _g_file_attribute_value_clear (attr);
 659   attr->type = G_FILE_ATTRIBUTE_TYPE_STRING;
 660   attr->u.string = g_strdup (string);
 661 }
 662
 663 /*
 664  * g_file_attribute_value_set_byte_string:
 665  * @attr: a #GFileAttributeValue.
 666  * @string: a byte string to set within the type.
 667  *
 668  * Sets the attribute value to a given byte string.
 669  *
 670  **/
 671 void
 672 _g_file_attribute_value_set_byte_string (GFileAttributeValue *attr,
 673                                          const char          *string)
 674 {
 675   g_return_if_fail (attr != NULL);
 676   g_return_if_fail (string != NULL);
 677
 678   _g_file_attribute_value_clear (attr);
 679   attr->type = G_FILE_ATTRIBUTE_TYPE_BYTE_STRING;
 680   attr->u.string = g_strdup (string);
 681 }
 682
 683 /*
 684  * g_file_attribute_value_set_boolean:
 685  * @attr: a #GFileAttributeValue.
 686  * @value: a #gboolean to set within the type.
 687  *
 688  * Sets the attribute value to the given boolean value.
 689  *
 690  **/
 691 void
 692 _g_file_attribute_value_set_boolean (GFileAttributeValue *attr,
 693                                      gboolean             value)
 694 {
 695   g_return_if_fail (attr != NULL);
 696
 697   _g_file_attribute_value_clear (attr);
 698   attr->type = G_FILE_ATTRIBUTE_TYPE_BOOLEAN;
 699   attr->u.boolean = !!value;
 700 }
 701
 702 /*
 703  * g_file_attribute_value_set_uint32:
 704  * @attr: a #GFileAttributeValue.
 705  * @value: a #guint32 to set within the type.
 706  *
 707  * Sets the attribute value to the given unsigned 32-bit integer.
 708  *
 709  **/
 710 void
 711 _g_file_attribute_value_set_uint32 (GFileAttributeValue *attr,
 712                                     guint32              value)
 713 {
 714   g_return_if_fail (attr != NULL);
 715
 716   _g_file_attribute_value_clear (attr);
 717   attr->type = G_FILE_ATTRIBUTE_TYPE_UINT32;
 718   attr->u.uint32 = value;
 719 }
 720
 721 /*
 722  * g_file_attribute_value_set_int32:
 723  * @attr: a #GFileAttributeValue.
 724  * @value: a #gint32 to set within the type.
 725  *
 726  * Sets the attribute value to the given signed 32-bit integer.
 727  *
 728  **/
 729 void
 730 _g_file_attribute_value_set_int32 (GFileAttributeValue *attr,
 731                                    gint32               value)
 732 {
 733   g_return_if_fail (attr != NULL);
 734
 735   _g_file_attribute_value_clear (attr);
 736   attr->type = G_FILE_ATTRIBUTE_TYPE_INT32;
 737   attr->u.int32 = value;
 738 }
 739
 740 /*
 741  * g_file_attribute_value_set_uint64:
 742  * @attr: a #GFileAttributeValue.
 743  * @value: a #guint64 to set within the type.
 744  *
 745  * Sets the attribute value to a given unsigned 64-bit integer.
 746  *
 747  **/
 748 void
 749 _g_file_attribute_value_set_uint64 (GFileAttributeValue *attr,
 750                                     guint64              value)
 751 {
 752   g_return_if_fail (attr != NULL);
 753
 754   _g_file_attribute_value_clear (attr);
 755   attr->type = G_FILE_ATTRIBUTE_TYPE_UINT64;
 756   attr->u.uint64 = value;
 757 }
 758
 759 /*
 760  * g_file_attribute_value_set_int64:
 761  * @attr: a #GFileAttributeValue.
 762  * @value: a #gint64 to set within the type.
 763  *
 764  * Sets the attribute value to a given signed 64-bit integer.
 765  *
 766  **/
 767 void
 768 _g_file_attribute_value_set_int64 (GFileAttributeValue *attr,
 769                                    gint64               value)
 770 {
 771   g_return_if_fail (attr != NULL);
 772
 773   _g_file_attribute_value_clear (attr);
 774   attr->type = G_FILE_ATTRIBUTE_TYPE_INT64;
 775   attr->u.int64 = value;
 776 }
 777
 778 /*
 779  * g_file_attribute_value_set_object:
 780  * @attr: a #GFileAttributeValue.
 781  * @obj: a #GObject.
 782  *
 783  * Sets the attribute to contain the value @obj.
 784  * The @attr references the GObject internally.
 785  *
 786  **/
 787 void
 788 _g_file_attribute_value_set_object (GFileAttributeValue *attr,
 789                                     GObject             *obj)
 790 {
 791   g_return_if_fail (attr != NULL);
 792   g_return_if_fail (obj != NULL);
 793
 794   _g_file_attribute_value_clear (attr);
 795   attr->type = G_FILE_ATTRIBUTE_TYPE_OBJECT;
 796   attr->u.obj = g_object_ref (obj);
 797 }
 798
 799 typedef struct {
 800   GFileAttributeInfoList public;
 801   GArray *array;
 802   int ref_count;
 803 } GFileAttributeInfoListPriv;
 804
 805 static void
 806 list_update_public (GFileAttributeInfoListPriv *priv)
 807 {
 808   priv->public.infos = (GFileAttributeInfo *)priv->array->data;
 809   priv->public.n_infos = priv->array->len;
 810 }
 811
 812 /**
 813  * g_file_attribute_info_list_new:
 814  *
 815  * Creates a new file attribute info list.
 816  *
 817  * Returns: a #GFileAttributeInfoList.
 818  **/
 819 GFileAttributeInfoList *
 820 g_file_attribute_info_list_new (void)
 821 {
 822   GFileAttributeInfoListPriv *priv;
 823
 824   priv = g_new0 (GFileAttributeInfoListPriv, 1);
 825
 826   priv->ref_count = 1;
 827   priv->array = g_array_new (TRUE, FALSE, sizeof (GFileAttributeInfo));
 828
 829   list_update_public (priv);
 830
 831   return (GFileAttributeInfoList *)priv;
 832 }
 833
 834 /**
 835  * g_file_attribute_info_list_dup:
 836  * @list: a #GFileAttributeInfoList to duplicate.
 837  *
 838  * Makes a duplicate of a file attribute info list.
 839  *
 840  * Returns: a copy of the given @list.
 841  **/
 842 GFileAttributeInfoList *
 843 g_file_attribute_info_list_dup (GFileAttributeInfoList *list)
 844 {
 845   GFileAttributeInfoListPriv *new;
 846   int i;
 847
 848   g_return_val_if_fail (list != NULL, NULL);
 849
 850   new = g_new0 (GFileAttributeInfoListPriv, 1);
 851   new->ref_count = 1;
 852   new->array = g_array_new (TRUE, FALSE, sizeof (GFileAttributeInfo));
 853
 854   g_array_set_size (new->array, list->n_infos);
 855   list_update_public (new);
 856   for (i = 0; i < list->n_infos; i++)
 857     {
 858       new->public.infos[i].name = g_strdup (list->infos[i].name);
 859       new->public.infos[i].type = list->infos[i].type;
 860       new->public.infos[i].flags = list->infos[i].flags;
 861     }
 862
 863   return (GFileAttributeInfoList *)new;
 864 }
 865
 866 /**
 867  * g_file_attribute_info_list_ref:
 868  * @list: a #GFileAttributeInfoList to reference.
 869  *
 870  * References a file attribute info list.
 871  *
 872  * Returns: #GFileAttributeInfoList or %NULL on error.
 873  **/
 874 GFileAttributeInfoList *
 875 g_file_attribute_info_list_ref (GFileAttributeInfoList *list)
 876 {
 877   GFileAttributeInfoListPriv *priv = (GFileAttributeInfoListPriv *)list;
 878
 879   g_return_val_if_fail (list != NULL, NULL);
 880   g_return_val_if_fail (priv->ref_count > 0, NULL);
 881
 882   g_atomic_int_inc (&priv->ref_count);
 883
 884   return list;
 885 }
 886
 887 /**
 888  * g_file_attribute_info_list_unref:
 889  * @list: The #GFileAttributeInfoList to unreference.
 890  *
 891  * Removes a reference from the given @list. If the reference count
 892  * falls to zero, the @list is deleted.
 893  **/
 894 void
 895 g_file_attribute_info_list_unref (GFileAttributeInfoList *list)
 896 {
 897   GFileAttributeInfoListPriv *priv = (GFileAttributeInfoListPriv *)list;
 898   int i;
 899
 900   g_return_if_fail (list != NULL);
 901   g_return_if_fail (priv->ref_count > 0);
 902
 903   if (g_atomic_int_dec_and_test (&priv->ref_count))
 904     {
 905       for (i = 0; i < list->n_infos; i++)
 906         g_free (list->infos[i].name);
 907       g_array_free (priv->array, TRUE);
 908     }
 909 }
 910
 911 static int
 912 g_file_attribute_info_list_bsearch (GFileAttributeInfoList *list,
 913                                     const char             *name)
 914 {
 915   int start, end, mid;
 916
 917   start = 0;
 918   end = list->n_infos;
 919
 920   while (start != end)
 921     {
 922       mid = start + (end - start) / 2;
 923
 924       if (strcmp (name, list->infos[mid].name) < 0)
 925         end = mid;
 926       else if (strcmp (name, list->infos[mid].name) > 0)
 927         start = mid + 1;
 928       else
 929         return mid;
 930     }
 931   return start;
 932 }
 933
 934 /**
 935  * g_file_attribute_info_list_lookup:
 936  * @list: a #GFileAttributeInfoList.
 937  * @name: the name of the attribute to lookup.
 938  *
 939  * Gets the file attribute with the name @name from @list.
 940  *
 941  * Returns: a #GFileAttributeInfo for the @name, or %NULL if an
 942  * attribute isn't found.
 943  **/
 944 const GFileAttributeInfo *
 945 g_file_attribute_info_list_lookup (GFileAttributeInfoList *list,
 946                                    const char             *name)
 947 {
 948   int i;
 949
 950   g_return_val_if_fail (list != NULL, NULL);
 951   g_return_val_if_fail (name != NULL, NULL);
 952
 953   i = g_file_attribute_info_list_bsearch (list, name);
 954
 955   if (i < list->n_infos && strcmp (list->infos[i].name, name) == 0)
 956     return &list->infos[i];
 957
 958   return NULL;
 959 }
 960
 961 /**
 962  * g_file_attribute_info_list_add:
 963  * @list: a #GFileAttributeInfoList.
 964  * @name: the name of the attribute to add.
 965  * @type: the #GFileAttributeType for the attribute.
 966  * @flags: #GFileAttributeInfoFlags for the attribute.
 967  *
 968  * Adds a new attribute with @name to the @list, setting
 969  * its @type and @flags.
 970  **/
 971 void
 972 g_file_attribute_info_list_add    (GFileAttributeInfoList *list,
 973                                    const char             *name,
 974                                    GFileAttributeType      type,
 975                                    GFileAttributeInfoFlags flags)
 976 {
 977   GFileAttributeInfoListPriv *priv = (GFileAttributeInfoListPriv *)list;
 978   GFileAttributeInfo info;
 979   int i;
 980
 981   g_return_if_fail (list != NULL);
 982   g_return_if_fail (name != NULL);
 983
 984   i = g_file_attribute_info_list_bsearch (list, name);
 985
 986   if (i < list->n_infos && strcmp (list->infos[i].name, name) == 0)
 987     {
 988       list->infos[i].type = type;
 989       return;
 990     }
 991
 992   info.name = g_strdup (name);
 993   info.type = type;
 994   info.flags = flags;
 995   g_array_insert_vals (priv->array, i, &info, 1);
 996
 997   list_update_public (priv);
 998 }
 999
1000 #define __G_FILE_ATTRIBUTE_C__
1001 #include "gioaliasdef.c"