/* GIO - GLib Input, Output and Streaming Library

 *

 * Copyright (C) 2006-2007 Red Hat, Inc.

 *

 * This library is free software; you can redistribute it and/or

 * modify it under the terms of the GNU Lesser General Public

 * License as published by the Free Software Foundation; either

 * version 2.1 of the License, or (at your option) any later version.

 *

 * This library is distributed in the hope that it will be useful,

 * but WITHOUT ANY WARRANTY; without even the implied warranty of

 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU

 * Lesser General Public License for more details.

 *

 * You should have received a copy of the GNU Lesser General

 * Public License along with this library; if not, see <http://www.gnu.org/licenses/>.

 *

 * Author: Alexander Larsson <alexl@redhat.com>

 */

#include "config.h"

#include <string.h>

#include "gfileattribute.h"

#include "gfileattribute-priv.h"

#include <glib-object.h>

#include "glibintl.h"

/**

 * SECTION:gfileattribute

 * @short_description: Key-Value Paired File Attributes

 * @include: gio/gio.h

 * @see_also: #GFile, #GFileInfo

 *

 * File attributes in GIO consist of a list of key-value pairs.

 *

 * Keys are strings that contain a key namespace and a key name, separated

 * by a colon, e.g. "namespace::keyname". Namespaces are included to sort

 * key-value pairs by namespaces for relevance. Keys can be retrived

 * using wildcards, e.g. "standard::*" will return all of the keys in the

 * "standard" namespace.

 *

 * The list of possible attributes for a filesystem (pointed to by a #GFile) is

 * available as a #GFileAttributeInfoList. This list is queryable by key names

 * as indicated earlier.

 *

 * Information is stored within the list in #GFileAttributeInfo structures.

 * The info structure can store different types, listed in the enum

 * #GFileAttributeType. Upon creation of a #GFileAttributeInfo, the type will

 * be set to %G_FILE_ATTRIBUTE_TYPE_INVALID.

 *

 * Classes that implement #GFileIface will create a #GFileAttributeInfoList and

 * install default keys and values for their given file system, architecture,

 * and other possible implementation details (e.g., on a UNIX system, a file

 * attribute key will be registered for the user id for a given file).

 *

 * ## Default Namespaces

 *

 * - `"standard"`: The "Standard" namespace. General file information that

 *   any application may need should be put in this namespace. Examples

 *   include the file's name, type, and size.

 * - `"etag`: The [Entity Tag][gfile-etag] namespace. Currently, the only key

 *   in this namespace is "value", which contains the value of the current

 *   entity tag.

 * - `"id"`: The "Identification" namespace. This namespace is used by file

 *   managers and applications that list directories to check for loops and

 *   to uniquely identify files.

 * - `"access"`: The "Access" namespace. Used to check if a user has the

 *   proper privileges to access files and perform file operations. Keys in

 *   this namespace are made to be generic and easily understood, e.g. the

 *   "can_read" key is %TRUE if the current user has permission to read the

 *   file. UNIX permissions and NTFS ACLs in Windows should be mapped to

 *   these values.

 * - `"mountable"`: The "Mountable" namespace. Includes simple boolean keys

 *   for checking if a file or path supports mount operations, e.g. mount,

 *   unmount, eject. These are used for files of type %G_FILE_TYPE_MOUNTABLE.

 * - `"time"`: The "Time" namespace. Includes file access, changed, created

 *   times.

 * - `"unix"`: The "Unix" namespace. Includes UNIX-specific information and

 *   may not be available for all files. Examples include the UNIX "UID",

 *   "GID", etc.

 * - `"dos"`: The "DOS" namespace. Includes DOS-specific information and may

 *   not be available for all files. Examples include "is_system" for checking

 *   if a file is marked as a system file, and "is_archive" for checking if a

 *   file is marked as an archive file.

 * - `"owner"`: The "Owner" namespace. Includes information about who owns a

 *   file. May not be available for all file systems. Examples include "user"

 *   for getting the user name of the file owner. This information is often

 *   mapped from some backend specific data such as a UNIX UID.

 * - `"thumbnail"`: The "Thumbnail" namespace. Includes information about file

 *   thumbnails and their location within the file system. Examples of keys in

 *   this namespace include "path" to get the location of a thumbnail, "failed"

 *   to check if thumbnailing of the file failed, and "is-valid" to check if

 *   the thumbnail is outdated.

 * - `"filesystem"`: The "Filesystem" namespace. Gets information about the

 *   file system where a file is located, such as its type, how much space is

 *   left available, and the overall size of the file system.

 * - `"gvfs"`: The "GVFS" namespace. Keys in this namespace contain information

 *   about the current GVFS backend in use.

 * - `"xattr"`: The "xattr" namespace. Gets information about extended

 *   user attributes. See attr(5). The "user." prefix of the extended user

 *   attribute name is stripped away when constructing keys in this namespace,

 *   e.g. "xattr::mime_type" for the extended attribute with the name

 *   "user.mime_type". Note that this information is only available if

 *   GLib has been built with extended attribute support.

 * - `"xattr-sys"`: The "xattr-sys" namespace. Gets information about

 *   extended attributes which are not user-specific. See attr(5). Note

 *   that this information is only available if GLib has been built with

 *   extended attribute support.

 * - `"selinux"`: The "SELinux" namespace. Includes information about the

 *   SELinux context of files. Note that this information is only available

 *   if GLib has been built with SELinux support.

 *

 * Please note that these are not all of the possible namespaces.

 * More namespaces can be added from GIO modules or by individual applications.

 * For more information about writing GIO modules, see #GIOModule.

 *

 * 

 * file systems -->

 *

 * ## Default Keys

 *

 * For a list of the built-in keys and their types, see the

 * [GFileInfo][GFileInfo] documentation.

 *

 * Note that there are no predefined keys in the "xattr" and "xattr-sys"

 * namespaces. Keys for the "xattr" namespace are constructed by stripping

 * away the "user." prefix from the extended user attribute, and prepending

 * "xattr::". Keys for the "xattr-sys" namespace are constructed by

 * concatenating "xattr-sys::" with the extended attribute name. All extended

 * attribute values are returned as hex-encoded strings in which bytes outside

 * the ASCII range are encoded as escape sequences of the form \x`nn`

 * where `nn` is a 2-digit hexadecimal number.

 */

/**

 * _g_file_attribute_value_free:

 * @attr: a #GFileAttributeValue.

 *

 * Frees the memory used by @attr.

 *

 **/

void

_g_file_attribute_value_free (GFileAttributeValue *attr)

{

  g_return_if_fail (attr != NULL);

  _g_file_attribute_value_clear (attr);

  g_free (attr);

}

/**

 * _g_file_attribute_value_clear:

 * @attr: a #GFileAttributeValue.

 *

 * Clears the value of @attr and sets its type to

 * %G_FILE_ATTRIBUTE_TYPE_INVALID.

 *

 **/

void

_g_file_attribute_value_clear (GFileAttributeValue *attr)

{

  g_return_if_fail (attr != NULL);

  if (attr->type == G_FILE_ATTRIBUTE_TYPE_STRING ||

      attr->type == G_FILE_ATTRIBUTE_TYPE_BYTE_STRING)

    g_free (attr->u.string);

  if (attr->type == G_FILE_ATTRIBUTE_TYPE_STRINGV)

    g_strfreev (attr->u.stringv);

  if (attr->type == G_FILE_ATTRIBUTE_TYPE_OBJECT &&

      attr->u.obj != NULL)

    g_object_unref (attr->u.obj);

  attr->type = G_FILE_ATTRIBUTE_TYPE_INVALID;

}

/**

 * g_file_attribute_value_set:

 * @attr: a #GFileAttributeValue to set the value in.

 * @new_value: a #GFileAttributeValue to get the value from.

 *

 * Sets an attribute's value from another attribute.

 **/

void

_g_file_attribute_value_set (GFileAttributeValue        *attr,

			     const GFileAttributeValue *new_value)

{

  g_return_if_fail (attr != NULL);

  g_return_if_fail (new_value != NULL);

  _g_file_attribute_value_clear (attr);

  *attr = *new_value;

  if (attr->type == G_FILE_ATTRIBUTE_TYPE_STRING ||

      attr->type == G_FILE_ATTRIBUTE_TYPE_BYTE_STRING)

    attr->u.string = g_strdup (attr->u.string);

  if (attr->type == G_FILE_ATTRIBUTE_TYPE_STRINGV)

    attr->u.stringv = g_strdupv (attr->u.stringv);

  if (attr->type == G_FILE_ATTRIBUTE_TYPE_OBJECT &&

      attr->u.obj != NULL)

    g_object_ref (attr->u.obj);

}

/**

 * _g_file_attribute_value_new:

 *

 * Creates a new file attribute.

 *

 * Returns: a #GFileAttributeValue.

 **/

GFileAttributeValue *

_g_file_attribute_value_new (void)

{

  GFileAttributeValue *attr;

  attr = g_new (GFileAttributeValue, 1);

  attr->type = G_FILE_ATTRIBUTE_TYPE_INVALID;

  return attr;

}

gpointer

_g_file_attribute_value_peek_as_pointer (GFileAttributeValue *attr)

{

  switch (attr->type) {

  case G_FILE_ATTRIBUTE_TYPE_STRING:

  case G_FILE_ATTRIBUTE_TYPE_BYTE_STRING:

    return attr->u.string;

  case G_FILE_ATTRIBUTE_TYPE_STRINGV:

    return attr->u.stringv;

  case G_FILE_ATTRIBUTE_TYPE_OBJECT:

    return attr->u.obj;

  default:

    return (gpointer) &attr->u;

  }

}

/**

 * g_file_attribute_value_dup:

 * @other: a #GFileAttributeValue to duplicate.

 *

 * Duplicates a file attribute.

 *

 * Returns: a duplicate of the @other.

 **/

GFileAttributeValue *

_g_file_attribute_value_dup (const GFileAttributeValue *other)

{

  GFileAttributeValue *attr;

  g_return_val_if_fail (other != NULL, NULL);

  attr = g_new (GFileAttributeValue, 1);

  attr->type = G_FILE_ATTRIBUTE_TYPE_INVALID;

  _g_file_attribute_value_set (attr, other);

  return attr;

}

G_DEFINE_BOXED_TYPE (GFileAttributeInfoList, g_file_attribute_info_list,

                     g_file_attribute_info_list_dup,

                     g_file_attribute_info_list_unref)

static gboolean

valid_char (char c)

{

  return c >= 32 && c <= 126 && c != '\\';

}

static char *

escape_byte_string (const char *str)

{

  size_t len;

  int num_invalid, i;

  char *escaped_val, *p;

  unsigned char c;

  const char hex_digits[] = "0123456789abcdef";

  len = strlen (str);

  num_invalid = 0;

  for (i = 0; i < len; i++)

    {

      if (!valid_char (str[i]))

	num_invalid++;

    }

  if (num_invalid == 0)

    return g_strdup (str);

  else

    {

      escaped_val = g_malloc (len + num_invalid*3 + 1);

      p = escaped_val;

      for (i = 0; i < len; i++)

	{

	  c = str[i];

	  if (valid_char (c))

	    *p++ = c;

	  else

	    {

	      *p++ = '\\';

	      *p++ = 'x';

	      *p++ = hex_digits[(c >> 4) & 0xf];

	      *p++ = hex_digits[c & 0xf];

	    }

	}

      *p++ = 0;

      return escaped_val;

    }

}

/**

 * _g_file_attribute_value_as_string:

 * @attr: a #GFileAttributeValue.

 *

 * Converts a #GFileAttributeValue to a string for display.

 * The returned string should be freed when no longer needed.

 *

 * Returns: a string from the @attr, %NULL on error, or "<invalid>"

 * if @attr is of type %G_FILE_ATTRIBUTE_TYPE_INVALID.

 */

char *

_g_file_attribute_value_as_string (const GFileAttributeValue *attr)

{

  GString *s;

  int i;

  char *str;

  g_return_val_if_fail (attr != NULL, NULL);

  switch (attr->type)

    {

    case G_FILE_ATTRIBUTE_TYPE_STRING:

      str = g_strdup (attr->u.string);

      break;

    case G_FILE_ATTRIBUTE_TYPE_STRINGV:

      s = g_string_new ("[");

      for (i = 0; attr->u.stringv[i] != NULL; i++)

	{

	  g_string_append (s, attr->u.stringv[i]);

	  if (attr->u.stringv[i+1] != NULL)

	    g_string_append (s, ", ");

	}

      g_string_append (s, "]");

      str = g_string_free (s, FALSE);

      break;

    case G_FILE_ATTRIBUTE_TYPE_BYTE_STRING:

      str = escape_byte_string (attr->u.string);

      break;

    case G_FILE_ATTRIBUTE_TYPE_BOOLEAN:

      str = g_strdup_printf ("%s", attr->u.boolean?"TRUE":"FALSE");

      break;

    case G_FILE_ATTRIBUTE_TYPE_UINT32:

      str = g_strdup_printf ("%u", (unsigned int)attr->u.uint32);

      break;

    case G_FILE_ATTRIBUTE_TYPE_INT32:

      str = g_strdup_printf ("%i", (int)attr->u.int32);

      break;

    case G_FILE_ATTRIBUTE_TYPE_UINT64:

      str = g_strdup_printf ("%"G_GUINT64_FORMAT, attr->u.uint64);

      break;

    case G_FILE_ATTRIBUTE_TYPE_INT64:

      str = g_strdup_printf ("%"G_GINT64_FORMAT, attr->u.int64);

      break;

    case G_FILE_ATTRIBUTE_TYPE_OBJECT:

      str = g_strdup_printf ("%s:%p", g_type_name_from_instance

                                          ((GTypeInstance *) attr->u.obj),

                                      attr->u.obj);

      break;

    case G_FILE_ATTRIBUTE_TYPE_INVALID:

      str = g_strdup ("<unset>");

      break;

    default:

      g_warning ("Invalid type in GFileInfo attribute");

      str = g_strdup ("<invalid>");

      break;

    }

  return str;

}

/**

 * _g_file_attribute_value_get_string:

 * @attr: a #GFileAttributeValue.

 *

 * Gets the string from a file attribute value. If the value is not the

 * right type then %NULL will be returned.

 *

 * Returns: the UTF-8 string value contained within the attribute, or %NULL.

 */

const char *

_g_file_attribute_value_get_string (const GFileAttributeValue *attr)

{

  if (attr == NULL)

    return NULL;

  g_return_val_if_fail (attr->type == G_FILE_ATTRIBUTE_TYPE_STRING, NULL);

  return attr->u.string;

}

/**

 * _g_file_attribute_value_get_byte_string:

 * @attr: a #GFileAttributeValue.

 *

 * Gets the byte string from a file attribute value. If the value is not the

 * right type then %NULL will be returned.

 *

 * Returns: the byte string contained within the attribute or %NULL.

 */

const char *

_g_file_attribute_value_get_byte_string (const GFileAttributeValue *attr)

{

  if (attr == NULL)

    return NULL;

  g_return_val_if_fail (attr->type == G_FILE_ATTRIBUTE_TYPE_BYTE_STRING, NULL);

  return attr->u.string;

}

char **

_g_file_attribute_value_get_stringv (const GFileAttributeValue *attr)

{

  if (attr == NULL)

    return NULL;

  g_return_val_if_fail (attr->type == G_FILE_ATTRIBUTE_TYPE_STRINGV, NULL);

  return attr->u.stringv;

}

/**

 * _g_file_attribute_value_get_boolean:

 * @attr: a #GFileAttributeValue.

 *

 * Gets the boolean value from a file attribute value. If the value is not the

 * right type then %FALSE will be returned.

 *

 * Returns: the boolean value contained within the attribute, or %FALSE.

 */

gboolean

_g_file_attribute_value_get_boolean (const GFileAttributeValue *attr)

{

  if (attr == NULL)

    return FALSE;

  g_return_val_if_fail (attr->type == G_FILE_ATTRIBUTE_TYPE_BOOLEAN, FALSE);

  return attr->u.boolean;

}

/**

 * _g_file_attribute_value_get_uint32:

 * @attr: a #GFileAttributeValue.

 *

 * Gets the unsigned 32-bit integer from a file attribute value. If the value

 * is not the right type then 0 will be returned.

 *

 * Returns: the unsigned 32-bit integer from the attribute, or 0.

 */

guint32

_g_file_attribute_value_get_uint32 (const GFileAttributeValue *attr)

{

  if (attr == NULL)

    return 0;

  g_return_val_if_fail (attr->type == G_FILE_ATTRIBUTE_TYPE_UINT32, 0);

  return attr->u.uint32;

}

/**

 * _g_file_attribute_value_get_int32:

 * @attr: a #GFileAttributeValue.

 *

 * Gets the signed 32-bit integer from a file attribute value. If the value

 * is not the right type then 0 will be returned.

 *

 * Returns: the signed 32-bit integer from the attribute, or 0.

 */

gint32

_g_file_attribute_value_get_int32 (const GFileAttributeValue *attr)

{

  if (attr == NULL)

    return 0;

  g_return_val_if_fail (attr->type == G_FILE_ATTRIBUTE_TYPE_INT32, 0);

  return attr->u.int32;

}

/**

 * _g_file_attribute_value_get_uint64:

 * @attr: a #GFileAttributeValue.

 *

 * Gets the unsigned 64-bit integer from a file attribute value. If the value

 * is not the right type then 0 will be returned.

 *

 * Returns: the unsigned 64-bit integer from the attribute, or 0.

 */

guint64

_g_file_attribute_value_get_uint64 (const GFileAttributeValue *attr)

{

  if (attr == NULL)

    return 0;

  g_return_val_if_fail (attr->type == G_FILE_ATTRIBUTE_TYPE_UINT64, 0);

  return attr->u.uint64;

}

/**

 * _g_file_attribute_value_get_int64:

 * @attr: a #GFileAttributeValue.

 *

 * Gets the signed 64-bit integer from a file attribute value. If the value

 * is not the right type then 0 will be returned.

 *

 * Returns: the signed 64-bit integer from the attribute, or 0.

 */

gint64

_g_file_attribute_value_get_int64 (const GFileAttributeValue *attr)

{

  if (attr == NULL)

    return 0;

  g_return_val_if_fail (attr->type == G_FILE_ATTRIBUTE_TYPE_INT64, 0);

  return attr->u.int64;

}

/**

 * _g_file_attribute_value_get_object:

 * @attr: a #GFileAttributeValue.

 *

 * Gets the GObject from a file attribute value. If the value

 * is not the right type then %NULL will be returned.

 *

 * Returns: the GObject from the attribute, or %NULL.

 **/

GObject *

_g_file_attribute_value_get_object (const GFileAttributeValue *attr)

{

  if (attr == NULL)

    return NULL;

  g_return_val_if_fail (attr->type == G_FILE_ATTRIBUTE_TYPE_OBJECT, NULL);

  return attr->u.obj;

}

void

_g_file_attribute_value_set_from_pointer (GFileAttributeValue *value,

					  GFileAttributeType   type,

					  gpointer             value_p,

					  gboolean             dup)

{

  _g_file_attribute_value_clear (value);

  value->type = type;

  switch (type)

    {

    case G_FILE_ATTRIBUTE_TYPE_STRING:

    case G_FILE_ATTRIBUTE_TYPE_BYTE_STRING:

      if (dup)

	value->u.string = g_strdup (value_p);

      else

	value->u.string = value_p;

      break;

    case G_FILE_ATTRIBUTE_TYPE_STRINGV:

      if (dup)

	value->u.stringv = g_strdupv (value_p);

      else

	value->u.stringv = value_p;

      break;

    case G_FILE_ATTRIBUTE_TYPE_OBJECT:

      if (dup)

	value->u.obj = g_object_ref (value_p);

      else

	value->u.obj = value_p;

      break;

    case G_FILE_ATTRIBUTE_TYPE_BOOLEAN:

      value->u.boolean = *(gboolean *)value_p;

      break;

    case G_FILE_ATTRIBUTE_TYPE_UINT32:

      value->u.uint32 = *(guint32 *)value_p;

      break;

    case G_FILE_ATTRIBUTE_TYPE_INT32:

      value->u.int32 = *(gint32 *)value_p;

      break;

    case G_FILE_ATTRIBUTE_TYPE_UINT64:

      value->u.uint64 = *(guint64 *)value_p;

      break;

    case G_FILE_ATTRIBUTE_TYPE_INT64:

      value->u.int64 = *(gint64 *)value_p;

      break;

    case G_FILE_ATTRIBUTE_TYPE_INVALID:

      break;

    default:

      g_warning ("Unknown type specified in g_file_info_set_attribute\n");

      break;

    }

}

/**

 * _g_file_attribute_value_set_string:

 * @attr: a #GFileAttributeValue.

 * @string: a UTF-8 string to set within the type.

 *

 * Sets the attribute value to a given UTF-8 string.

 */

void

_g_file_attribute_value_set_string (GFileAttributeValue *attr,

				    const char          *string)

{

  g_return_if_fail (attr != NULL);

  g_return_if_fail (string != NULL);

  _g_file_attribute_value_clear (attr);

  attr->type = G_FILE_ATTRIBUTE_TYPE_STRING;

  attr->u.string = g_strdup (string);

}

/**

 * _g_file_attribute_value_set_byte_string:

 * @attr: a #GFileAttributeValue.

 * @string: a byte string to set within the type.

 *

 * Sets the attribute value to a given byte string.

 */

void

_g_file_attribute_value_set_byte_string (GFileAttributeValue *attr,

					 const char          *string)

{

  g_return_if_fail (attr != NULL);

  g_return_if_fail (string != NULL);

  _g_file_attribute_value_clear (attr);

  attr->type = G_FILE_ATTRIBUTE_TYPE_BYTE_STRING;

  attr->u.string = g_strdup (string);

}

void

_g_file_attribute_value_set_stringv (GFileAttributeValue *attr,

				     char               **value)

{

  g_return_if_fail (attr != NULL);

  g_return_if_fail (value != NULL);

  _g_file_attribute_value_clear (attr);

  attr->type = G_FILE_ATTRIBUTE_TYPE_STRINGV;

  attr->u.stringv = g_strdupv (value);

}

/**

 * _g_file_attribute_value_set_boolean:

 * @attr: a #GFileAttributeValue.

 * @value: a #gboolean to set within the type.

 *

 * Sets the attribute value to the given boolean value.

 */

void

_g_file_attribute_value_set_boolean (GFileAttributeValue *attr,

				     gboolean             value)

{

  g_return_if_fail (attr != NULL);

  _g_file_attribute_value_clear (attr);

  attr->type = G_FILE_ATTRIBUTE_TYPE_BOOLEAN;

  attr->u.boolean = !!value;

}

/**

 * _g_file_attribute_value_set_uint32:

 * @attr: a #GFileAttributeValue.

 * @value: a #guint32 to set within the type.

 *

 * Sets the attribute value to the given unsigned 32-bit integer.

 */

void

_g_file_attribute_value_set_uint32 (GFileAttributeValue *attr,

				    guint32              value)

{

  g_return_if_fail (attr != NULL);

  _g_file_attribute_value_clear (attr);

  attr->type = G_FILE_ATTRIBUTE_TYPE_UINT32;

  attr->u.uint32 = value;

}

/**

 * _g_file_attribute_value_set_int32:

 * @attr: a #GFileAttributeValue.

 * @value: a #gint32 to set within the type.

 *

 * Sets the attribute value to the given signed 32-bit integer.

 */

void

_g_file_attribute_value_set_int32 (GFileAttributeValue *attr,

				   gint32               value)

{

  g_return_if_fail (attr != NULL);

  _g_file_attribute_value_clear (attr);

  attr->type = G_FILE_ATTRIBUTE_TYPE_INT32;

  attr->u.int32 = value;

}

/**

 * _g_file_attribute_value_set_uint64:

 * @attr: a #GFileAttributeValue.

 * @value: a #guint64 to set within the type.

 *

 * Sets the attribute value to a given unsigned 64-bit integer.

 */

void

_g_file_attribute_value_set_uint64 (GFileAttributeValue *attr,

				    guint64              value)

{

  g_return_if_fail (attr != NULL);

  _g_file_attribute_value_clear (attr);

  attr->type = G_FILE_ATTRIBUTE_TYPE_UINT64;

  attr->u.uint64 = value;

}

/**

 * _g_file_attribute_value_set_int64:

 * @attr: a #GFileAttributeValue.

 * @value: a #gint64 to set within the type.

 *

 * Sets the attribute value to a given signed 64-bit integer.

 */

void

_g_file_attribute_value_set_int64 (GFileAttributeValue *attr,

				   gint64               value)

{

  g_return_if_fail (attr != NULL);

  _g_file_attribute_value_clear (attr);

  attr->type = G_FILE_ATTRIBUTE_TYPE_INT64;

  attr->u.int64 = value;

}

/**

 * _g_file_attribute_value_set_object:

 * @attr: a #GFileAttributeValue.

 * @obj: a #GObject.

 *

 * Sets the attribute to contain the value @obj.

 * The @attr references the GObject internally.

 */

void

_g_file_attribute_value_set_object (GFileAttributeValue *attr,

				    GObject             *obj)

{

  g_return_if_fail (attr != NULL);

  g_return_if_fail (obj != NULL);

  _g_file_attribute_value_clear (attr);

  attr->type = G_FILE_ATTRIBUTE_TYPE_OBJECT;

  attr->u.obj = g_object_ref (obj);

}

typedef struct {

  GFileAttributeInfoList public;

  GArray *array;

  int ref_count;

} GFileAttributeInfoListPriv;

static void

list_update_public (GFileAttributeInfoListPriv *priv)

{

  priv->public.infos = (GFileAttributeInfo *)priv->array->data;

  priv->public.n_infos = priv->array->len;

}

/**

 * g_file_attribute_info_list_new:

 *

 * Creates a new file attribute info list.

 *

 * Returns: a #GFileAttributeInfoList.

 */

GFileAttributeInfoList *

g_file_attribute_info_list_new (void)

{

  GFileAttributeInfoListPriv *priv;

  priv = g_new0 (GFileAttributeInfoListPriv, 1);

  priv->ref_count = 1;

  priv->array = g_array_new (TRUE, FALSE, sizeof (GFileAttributeInfo));

  list_update_public (priv);

  return (GFileAttributeInfoList *)priv;

}

/**

 * g_file_attribute_info_list_dup:

 * @list: a #GFileAttributeInfoList to duplicate.

 *

 * Makes a duplicate of a file attribute info list.

 *

 * Returns: a copy of the given @list.

 */

GFileAttributeInfoList *

g_file_attribute_info_list_dup (GFileAttributeInfoList *list)

{

  GFileAttributeInfoListPriv *new;

  int i;

  g_return_val_if_fail (list != NULL, NULL);

  new = g_new0 (GFileAttributeInfoListPriv, 1);

  new->ref_count = 1;

  new->array = g_array_new (TRUE, FALSE, sizeof (GFileAttributeInfo));

  g_array_set_size (new->array, list->n_infos);

  list_update_public (new);

  for (i = 0; i < list->n_infos; i++)

    {

      new->public.infos[i].name = g_strdup (list->infos[i].name);

      new->public.infos[i].type = list->infos[i].type;

      new->public.infos[i].flags = list->infos[i].flags;

    }

  return (GFileAttributeInfoList *)new;

}

/**

 * g_file_attribute_info_list_ref:

 * @list: a #GFileAttributeInfoList to reference.

 *

 * References a file attribute info list.

 *

 * Returns: #GFileAttributeInfoList or %NULL on error.

 */

GFileAttributeInfoList *

g_file_attribute_info_list_ref (GFileAttributeInfoList *list)

{

  GFileAttributeInfoListPriv *priv = (GFileAttributeInfoListPriv *)list;

  g_return_val_if_fail (list != NULL, NULL);

  g_return_val_if_fail (priv->ref_count > 0, NULL);

  g_atomic_int_inc (&priv->ref_count);

  return list;

}

/**

 * g_file_attribute_info_list_unref:

 * @list: The #GFileAttributeInfoList to unreference.

 *

 * Removes a reference from the given @list. If the reference count

 * falls to zero, the @list is deleted.

 */

void

g_file_attribute_info_list_unref (GFileAttributeInfoList *list)

{

  GFileAttributeInfoListPriv *priv = (GFileAttributeInfoListPriv *)list;

  int i;