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glib/gio/gfileinfo.c
Debarshi Ray fa0f51ddf8 fileinfo: Add a G_FILE_ATTRIBUTE_STANDARD_IS_VOLATILE attribute 
This is meant for opaque, non-POSIX-like backends to indicate that the
URI is not persistent. Applications should look at
G_FILE_ATTRIBUTE_STANDARD_SYMLINK_TARGET for the persistent URI.
Examples of such backends could be a portal for letting sandboxed
applications access the file-system, or a database-backed storage like
Google Drive.

In these cases, the user visible file and folder names are different
from the real identifiers, used by the backend. So, a request to
create google-drive://user@gmail.com/foo/New\ File, would actually
lead to google-drive://user@gmail.com/foo/bar on the server even though
the user visible name is still "New File". Since the server-defined URI
is persistent and sanity-checked by the backend, it is recommended that
applications switch to it as soon as possible. Backends will try to
keep a mapping from "fake" to "real" URIs, but those are only on a
best effort basis. They might not be persistent or have the same
guarantees as the "real" URIs.

https://bugzilla.gnome.org/show_bug.cgi?id=741602
2015-08-20 18:40:02 +02:00

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/* 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 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>
*/
/**
* SECTION:gfileinfo
* @short_description: File Information and Attributes
* @include: gio/gio.h
* @see_also: #GFile, [GFileAttribute][gio-GFileAttribute]
*
* Functionality for manipulating basic metadata for files. #GFileInfo
* implements methods for getting information that all files should
* contain, and allows for manipulation of extended attributes.
*
* See [GFileAttribute][gio-GFileAttribute] for more information on how
* GIO handles file attributes.
*
* To obtain a #GFileInfo for a #GFile, use g_file_query_info() (or its
* async variant). To obtain a #GFileInfo for a file input or output
* stream, use g_file_input_stream_query_info() or
* g_file_output_stream_query_info() (or their async variants).
*
* To change the actual attributes of a file, you should then set the
* attribute in the #GFileInfo and call g_file_set_attributes_from_info()
* or g_file_set_attributes_async() on a GFile.
*
* However, not all attributes can be changed in the file. For instance,
* the actual size of a file cannot be changed via g_file_info_set_size().
* You may call g_file_query_settable_attributes() and
* g_file_query_writable_namespaces() to discover the settable attributes
* of a particular file at runtime.
*
* #GFileAttributeMatcher allows for searching through a #GFileInfo for
* attributes.
**/
#include "config.h"
#include <string.h>
#include "gfileinfo.h"
#include "gfileinfo-priv.h"
#include "gfileattribute-priv.h"
#include "gicon.h"
#include "glibintl.h"
/* We use this nasty thing, because NULL is a valid attribute matcher (matches nothing) */
#define NO_ATTRIBUTE_MASK ((GFileAttributeMatcher *)1)
typedef struct {
guint32 attribute;
GFileAttributeValue value;
} GFileAttribute;
struct _GFileInfo
{
GObject parent_instance;
GArray *attributes;
GFileAttributeMatcher *mask;
};
struct _GFileInfoClass
{
GObjectClass parent_class;
};
G_DEFINE_TYPE (GFileInfo, g_file_info, G_TYPE_OBJECT);
typedef struct {
guint32 id;
guint32 attribute_id_counter;
} NSInfo;
G_LOCK_DEFINE_STATIC (attribute_hash);
static int namespace_id_counter = 0;
static GHashTable *ns_hash = NULL;
static GHashTable *attribute_hash = NULL;
static char ***attributes = NULL;
/* Attribute ids are 32bit, we split it up like this:
* |------------|--------------------|
* 12 bit 20 bit
* namespace attribute id
*
* This way the attributes gets sorted in namespace order
*/
#define NS_POS 20
#define NS_MASK ((guint32)((1<<12) - 1))
#define ID_POS 0
#define ID_MASK ((guint32)((1<<20) - 1))
#define GET_NS(_attr_id) \
(((guint32) (_attr_id) >> NS_POS) & NS_MASK)
#define GET_ID(_attr_id) \
(((guint32)(_attr_id) >> ID_POS) & ID_MASK)
#define MAKE_ATTR_ID(_ns, _id) \
( ((((guint32) _ns) & NS_MASK) << NS_POS) | \
((((guint32) _id) & ID_MASK) << ID_POS) )
static NSInfo *
_lookup_namespace (const char *namespace)
{
NSInfo *ns_info;
ns_info = g_hash_table_lookup (ns_hash, namespace);
if (ns_info == NULL)
{
ns_info = g_new0 (NSInfo, 1);
ns_info->id = ++namespace_id_counter;
g_hash_table_insert (ns_hash, g_strdup (namespace), ns_info);
attributes = g_realloc (attributes, (ns_info->id + 1) * sizeof (char **));
attributes[ns_info->id] = g_new (char *, 1);
attributes[ns_info->id][0] = g_strconcat (namespace, "::*", NULL);
}
return ns_info;
}
static guint32
_lookup_attribute (const char *attribute)
{
guint32 attr_id, id;
char *ns;
const char *colon;
NSInfo *ns_info;
attr_id = GPOINTER_TO_UINT (g_hash_table_lookup (attribute_hash, attribute));
if (attr_id != 0)
return attr_id;
colon = strstr (attribute, "::");
if (colon)
ns = g_strndup (attribute, colon - attribute);
else
ns = g_strdup ("");
ns_info = _lookup_namespace (ns);
g_free (ns);
id = ++ns_info->attribute_id_counter;
attributes[ns_info->id] = g_realloc (attributes[ns_info->id], (id + 1) * sizeof (char *));
attributes[ns_info->id][id] = g_strdup (attribute);
attr_id = MAKE_ATTR_ID (ns_info->id, id);
g_hash_table_insert (attribute_hash, attributes[ns_info->id][id], GUINT_TO_POINTER (attr_id));
return attr_id;
}
static void
ensure_attribute_hash (void)
{
if (attribute_hash != NULL)
return;
ns_hash = g_hash_table_new (g_str_hash, g_str_equal);
attribute_hash = g_hash_table_new (g_str_hash, g_str_equal);
#define REGISTER_ATTRIBUTE(name) G_STMT_START{\
guint _u = _lookup_attribute (G_FILE_ATTRIBUTE_ ## name); \
/* use for generating the ID: g_print ("#define G_FILE_ATTRIBUTE_ID_%s (%u + %u)\n", #name + 17, _u & ~ID_MASK, _u & ID_MASK); */ \
g_assert (_u == G_FILE_ATTRIBUTE_ID_ ## name); \
}G_STMT_END
REGISTER_ATTRIBUTE (STANDARD_TYPE);
REGISTER_ATTRIBUTE (STANDARD_IS_HIDDEN);
REGISTER_ATTRIBUTE (STANDARD_IS_BACKUP);
REGISTER_ATTRIBUTE (STANDARD_IS_SYMLINK);
REGISTER_ATTRIBUTE (STANDARD_IS_VIRTUAL);
REGISTER_ATTRIBUTE (STANDARD_NAME);
REGISTER_ATTRIBUTE (STANDARD_DISPLAY_NAME);
REGISTER_ATTRIBUTE (STANDARD_EDIT_NAME);
REGISTER_ATTRIBUTE (STANDARD_COPY_NAME);
REGISTER_ATTRIBUTE (STANDARD_DESCRIPTION);
REGISTER_ATTRIBUTE (STANDARD_ICON);
REGISTER_ATTRIBUTE (STANDARD_CONTENT_TYPE);
REGISTER_ATTRIBUTE (STANDARD_FAST_CONTENT_TYPE);
REGISTER_ATTRIBUTE (STANDARD_SIZE);
REGISTER_ATTRIBUTE (STANDARD_ALLOCATED_SIZE);
REGISTER_ATTRIBUTE (STANDARD_SYMLINK_TARGET);
REGISTER_ATTRIBUTE (STANDARD_TARGET_URI);
REGISTER_ATTRIBUTE (STANDARD_SORT_ORDER);
REGISTER_ATTRIBUTE (STANDARD_SYMBOLIC_ICON);
REGISTER_ATTRIBUTE (STANDARD_IS_VOLATILE);
REGISTER_ATTRIBUTE (ETAG_VALUE);
REGISTER_ATTRIBUTE (ID_FILE);
REGISTER_ATTRIBUTE (ID_FILESYSTEM);
REGISTER_ATTRIBUTE (ACCESS_CAN_READ);
REGISTER_ATTRIBUTE (ACCESS_CAN_WRITE);
REGISTER_ATTRIBUTE (ACCESS_CAN_EXECUTE);
REGISTER_ATTRIBUTE (ACCESS_CAN_DELETE);
REGISTER_ATTRIBUTE (ACCESS_CAN_TRASH);
REGISTER_ATTRIBUTE (ACCESS_CAN_RENAME);
REGISTER_ATTRIBUTE (MOUNTABLE_CAN_MOUNT);
REGISTER_ATTRIBUTE (MOUNTABLE_CAN_UNMOUNT);
REGISTER_ATTRIBUTE (MOUNTABLE_CAN_EJECT);
REGISTER_ATTRIBUTE (MOUNTABLE_UNIX_DEVICE);
REGISTER_ATTRIBUTE (MOUNTABLE_UNIX_DEVICE_FILE);
REGISTER_ATTRIBUTE (MOUNTABLE_HAL_UDI);
REGISTER_ATTRIBUTE (MOUNTABLE_CAN_START);
REGISTER_ATTRIBUTE (MOUNTABLE_CAN_START_DEGRADED);
REGISTER_ATTRIBUTE (MOUNTABLE_CAN_STOP);
REGISTER_ATTRIBUTE (MOUNTABLE_START_STOP_TYPE);
REGISTER_ATTRIBUTE (MOUNTABLE_CAN_POLL);
REGISTER_ATTRIBUTE (MOUNTABLE_IS_MEDIA_CHECK_AUTOMATIC);
REGISTER_ATTRIBUTE (TIME_MODIFIED);
REGISTER_ATTRIBUTE (TIME_MODIFIED_USEC);
REGISTER_ATTRIBUTE (TIME_ACCESS);
REGISTER_ATTRIBUTE (TIME_ACCESS_USEC);
REGISTER_ATTRIBUTE (TIME_CHANGED);
REGISTER_ATTRIBUTE (TIME_CHANGED_USEC);
REGISTER_ATTRIBUTE (TIME_CREATED);
REGISTER_ATTRIBUTE (TIME_CREATED_USEC);
REGISTER_ATTRIBUTE (UNIX_DEVICE);
REGISTER_ATTRIBUTE (UNIX_INODE);
REGISTER_ATTRIBUTE (UNIX_MODE);
REGISTER_ATTRIBUTE (UNIX_NLINK);
REGISTER_ATTRIBUTE (UNIX_UID);
REGISTER_ATTRIBUTE (UNIX_GID);
REGISTER_ATTRIBUTE (UNIX_RDEV);
REGISTER_ATTRIBUTE (UNIX_BLOCK_SIZE);
REGISTER_ATTRIBUTE (UNIX_BLOCKS);
REGISTER_ATTRIBUTE (UNIX_IS_MOUNTPOINT);
REGISTER_ATTRIBUTE (DOS_IS_ARCHIVE);
REGISTER_ATTRIBUTE (DOS_IS_SYSTEM);
REGISTER_ATTRIBUTE (OWNER_USER);
REGISTER_ATTRIBUTE (OWNER_USER_REAL);
REGISTER_ATTRIBUTE (OWNER_GROUP);
REGISTER_ATTRIBUTE (THUMBNAIL_PATH);
REGISTER_ATTRIBUTE (THUMBNAILING_FAILED);
REGISTER_ATTRIBUTE (THUMBNAIL_IS_VALID);
REGISTER_ATTRIBUTE (PREVIEW_ICON);
REGISTER_ATTRIBUTE (FILESYSTEM_SIZE);
REGISTER_ATTRIBUTE (FILESYSTEM_FREE);
REGISTER_ATTRIBUTE (FILESYSTEM_TYPE);
REGISTER_ATTRIBUTE (FILESYSTEM_READONLY);
REGISTER_ATTRIBUTE (FILESYSTEM_USE_PREVIEW);
REGISTER_ATTRIBUTE (GVFS_BACKEND);
REGISTER_ATTRIBUTE (SELINUX_CONTEXT);
REGISTER_ATTRIBUTE (TRASH_ITEM_COUNT);
REGISTER_ATTRIBUTE (TRASH_ORIG_PATH);
REGISTER_ATTRIBUTE (TRASH_DELETION_DATE);
#undef REGISTER_ATTRIBUTE
}
static guint32
lookup_namespace (const char *namespace)
{
NSInfo *ns_info;
guint32 id;
G_LOCK (attribute_hash);
ensure_attribute_hash ();
ns_info = _lookup_namespace (namespace);
id = 0;
if (ns_info)
id = ns_info->id;
G_UNLOCK (attribute_hash);
return id;
}
static char *
get_attribute_for_id (int attribute)
{
char *s;
G_LOCK (attribute_hash);
s = attributes[GET_NS(attribute)][GET_ID(attribute)];
G_UNLOCK (attribute_hash);
return s;
}
static guint32
lookup_attribute (const char *attribute)
{
guint32 attr_id;
G_LOCK (attribute_hash);
ensure_attribute_hash ();
attr_id = _lookup_attribute (attribute);
G_UNLOCK (attribute_hash);
return attr_id;
}
static void
g_file_info_finalize (GObject *object)
{
GFileInfo *info;
int i;
GFileAttribute *attrs;
info = G_FILE_INFO (object);
attrs = (GFileAttribute *)info->attributes->data;
for (i = 0; i < info->attributes->len; i++)
_g_file_attribute_value_clear (&attrs[i].value);
g_array_free (info->attributes, TRUE);
if (info->mask != NO_ATTRIBUTE_MASK)
g_file_attribute_matcher_unref (info->mask);
G_OBJECT_CLASS (g_file_info_parent_class)->finalize (object);
}
static void
g_file_info_class_init (GFileInfoClass *klass)
{
GObjectClass *gobject_class = G_OBJECT_CLASS (klass);
gobject_class->finalize = g_file_info_finalize;
}
static void
g_file_info_init (GFileInfo *info)
{
info->mask = NO_ATTRIBUTE_MASK;
info->attributes = g_array_new (FALSE, FALSE,
sizeof (GFileAttribute));
}
/**
* g_file_info_new:
*
* Creates a new file info structure.
*
* Returns: a #GFileInfo.
**/
GFileInfo *
g_file_info_new (void)
{
return g_object_new (G_TYPE_FILE_INFO, NULL);
}
/**
* g_file_info_copy_into:
* @src_info: source to copy attributes from.
* @dest_info: destination to copy attributes to.
*
* Copies all of the [GFileAttribute][gio-GFileAttribute]
* from @src_info to @dest_info.
**/
void
g_file_info_copy_into (GFileInfo *src_info,
GFileInfo *dest_info)
{
GFileAttribute *source, *dest;
int i;
g_return_if_fail (G_IS_FILE_INFO (src_info));
g_return_if_fail (G_IS_FILE_INFO (dest_info));
dest = (GFileAttribute *)dest_info->attributes->data;
for (i = 0; i < dest_info->attributes->len; i++)
_g_file_attribute_value_clear (&dest[i].value);
g_array_set_size (dest_info->attributes,
src_info->attributes->len);
source = (GFileAttribute *)src_info->attributes->data;
dest = (GFileAttribute *)dest_info->attributes->data;
for (i = 0; i < src_info->attributes->len; i++)
{
dest[i].attribute = source[i].attribute;
dest[i].value.type = G_FILE_ATTRIBUTE_TYPE_INVALID;
_g_file_attribute_value_set (&dest[i].value, &source[i].value);
}
if (dest_info->mask != NO_ATTRIBUTE_MASK)
g_file_attribute_matcher_unref (dest_info->mask);
if (src_info->mask == NO_ATTRIBUTE_MASK)
dest_info->mask = NO_ATTRIBUTE_MASK;
else
dest_info->mask = g_file_attribute_matcher_ref (src_info->mask);
}
/**
* g_file_info_dup:
* @other: a #GFileInfo.
*
* Duplicates a file info structure.
*
* Returns: (transfer full): a duplicate #GFileInfo of @other.
**/
GFileInfo *
g_file_info_dup (GFileInfo *other)
{
GFileInfo *new;
g_return_val_if_fail (G_IS_FILE_INFO (other), NULL);
new = g_file_info_new ();
g_file_info_copy_into (other, new);
return new;
}
/**
* g_file_info_set_attribute_mask:
* @info: a #GFileInfo.
* @mask: a #GFileAttributeMatcher.
*
* Sets @mask on @info to match specific attribute types.
**/
void
g_file_info_set_attribute_mask (GFileInfo *info,
GFileAttributeMatcher *mask)
{
GFileAttribute *attr;
int i;
g_return_if_fail (G_IS_FILE_INFO (info));
if (mask != info->mask)
{
if (info->mask != NO_ATTRIBUTE_MASK)
g_file_attribute_matcher_unref (info->mask);
info->mask = g_file_attribute_matcher_ref (mask);
/* Remove non-matching attributes */
for (i = 0; i < info->attributes->len; i++)
{
attr = &g_array_index (info->attributes, GFileAttribute, i);
if (!_g_file_attribute_matcher_matches_id (mask,
attr->attribute))
{
_g_file_attribute_value_clear (&attr->value);
g_array_remove_index (info->attributes, i);
i--;
}
}
}
}
/**
* g_file_info_unset_attribute_mask:
* @info: #GFileInfo.
*
* Unsets a mask set by g_file_info_set_attribute_mask(), if one
* is set.
**/
void
g_file_info_unset_attribute_mask (GFileInfo *info)
{
g_return_if_fail (G_IS_FILE_INFO (info));
if (info->mask != NO_ATTRIBUTE_MASK)
g_file_attribute_matcher_unref (info->mask);
info->mask = NO_ATTRIBUTE_MASK;
}
/**
* g_file_info_clear_status:
* @info: a #GFileInfo.
*
* Clears the status information from @info.
**/
void
g_file_info_clear_status (GFileInfo *info)
{
GFileAttribute *attrs;
int i;
g_return_if_fail (G_IS_FILE_INFO (info));
attrs = (GFileAttribute *)info->attributes->data;
for (i = 0; i < info->attributes->len; i++)
attrs[i].value.status = G_FILE_ATTRIBUTE_STATUS_UNSET;
}
static int
g_file_info_find_place (GFileInfo *info,
guint32 attribute)
{
int min, max, med;
GFileAttribute *attrs;
/* Binary search for the place where attribute would be, if it's
in the array */
min = 0;
max = info->attributes->len;
attrs = (GFileAttribute *)info->attributes->data;
while (min < max)
{
med = min + (max - min) / 2;
if (attrs[med].attribute == attribute)
{
min = med;
break;
}
else if (attrs[med].attribute < attribute)
min = med + 1;
else /* attrs[med].attribute > attribute */
max = med;
}
return min;
}
static GFileAttributeValue *
g_file_info_find_value (GFileInfo *info,
guint32 attr_id)
{
GFileAttribute *attrs;
int i;
i = g_file_info_find_place (info, attr_id);
attrs = (GFileAttribute *)info->attributes->data;
if (i < info->attributes->len &&
attrs[i].attribute == attr_id)
return &attrs[i].value;
return NULL;
}
static GFileAttributeValue *
g_file_info_find_value_by_name (GFileInfo *info,
const char *attribute)
{
guint32 attr_id;
attr_id = lookup_attribute (attribute);
return g_file_info_find_value (info, attr_id);
}
/**
* g_file_info_has_attribute:
* @info: a #GFileInfo.
* @attribute: a file attribute key.
*
* Checks if a file info structure has an attribute named @attribute.
*
* Returns: %TRUE if @Ginfo has an attribute named @attribute,
* %FALSE otherwise.
**/
gboolean
g_file_info_has_attribute (GFileInfo *info,
const char *attribute)
{
GFileAttributeValue *value;
g_return_val_if_fail (G_IS_FILE_INFO (info), FALSE);
g_return_val_if_fail (attribute != NULL && *attribute != '\0', FALSE);
value = g_file_info_find_value_by_name (info, attribute);
return value != NULL;
}
/**
* g_file_info_has_namespace:
* @info: a #GFileInfo.
* @name_space: a file attribute namespace.
*
* Checks if a file info structure has an attribute in the
* specified @name_space.
*
* Returns: %TRUE if @Ginfo has an attribute in @name_space,
* %FALSE otherwise.
*
* Since: 2.22
**/
gboolean
g_file_info_has_namespace (GFileInfo *info,
const char *name_space)
{
GFileAttribute *attrs;
guint32 ns_id;
int i;
g_return_val_if_fail (G_IS_FILE_INFO (info), FALSE);
g_return_val_if_fail (name_space != NULL, FALSE);
ns_id = lookup_namespace (name_space);
attrs = (GFileAttribute *)info->attributes->data;
for (i = 0; i < info->attributes->len; i++)
{
if (GET_NS (attrs[i].attribute) == ns_id)
return TRUE;
}
return FALSE;
}
/**
* g_file_info_list_attributes:
* @info: a #GFileInfo.
* @name_space: a file attribute key's namespace.
*
* Lists the file info structure's attributes.
*
* Returns: (nullable) (array zero-terminated=1) (transfer full): a
* null-terminated array of strings of all of the possible attribute
* types for the given @name_space, or %NULL on error.
**/
char **
g_file_info_list_attributes (GFileInfo *info,
const char *name_space)
{
GPtrArray *names;
GFileAttribute *attrs;
guint32 attribute;
guint32 ns_id = (name_space) ? lookup_namespace (name_space) : 0;
int i;
g_return_val_if_fail (G_IS_FILE_INFO (info), NULL);
names = g_ptr_array_new ();
attrs = (GFileAttribute *)info->attributes->data;
for (i = 0; i < info->attributes->len; i++)
{
attribute = attrs[i].attribute;
if (ns_id == 0 || GET_NS (attribute) == ns_id)
g_ptr_array_add (names, g_strdup (get_attribute_for_id (attribute)));
}
/* NULL terminate */
g_ptr_array_add (names, NULL);
return (char **)g_ptr_array_free (names, FALSE);
}
/**
* g_file_info_get_attribute_type:
* @info: a #GFileInfo.
* @attribute: a file attribute key.
*
* Gets the attribute type for an attribute key.
*
* Returns: a #GFileAttributeType for the given @attribute, or
* %G_FILE_ATTRIBUTE_TYPE_INVALID if the key is not set.
**/
GFileAttributeType
g_file_info_get_attribute_type (GFileInfo *info,
const char *attribute)
{
GFileAttributeValue *value;
g_return_val_if_fail (G_IS_FILE_INFO (info), G_FILE_ATTRIBUTE_TYPE_INVALID);
g_return_val_if_fail (attribute != NULL && *attribute != '\0', G_FILE_ATTRIBUTE_TYPE_INVALID);
value = g_file_info_find_value_by_name (info, attribute);
if (value)
return value->type;
else
return G_FILE_ATTRIBUTE_TYPE_INVALID;
}
/**
* g_file_info_remove_attribute:
* @info: a #GFileInfo.
* @attribute: a file attribute key.
*
* Removes all cases of @attribute from @info if it exists.
**/
void
g_file_info_remove_attribute (GFileInfo *info,
const char *attribute)
{
guint32 attr_id;
GFileAttribute *attrs;
int i;
g_return_if_fail (G_IS_FILE_INFO (info));
g_return_if_fail (attribute != NULL && *attribute != '\0');
attr_id = lookup_attribute (attribute);
i = g_file_info_find_place (info, attr_id);
attrs = (GFileAttribute *)info->attributes->data;
if (i < info->attributes->len &&
attrs[i].attribute == attr_id)
{
_g_file_attribute_value_clear (&attrs[i].value);
g_array_remove_index (info->attributes, i);
}
}
/**
* g_file_info_get_attribute_data:
* @info: a #GFileInfo
* @attribute: a file attribute key
* @type: (out) (allow-none): return location for the attribute type, or %NULL
* @value_pp: (out) (allow-none): return location for the attribute value, or %NULL
* @status: (out) (allow-none): return location for the attribute status, or %NULL
*
* Gets the attribute type, value and status for an attribute key.
*
* Returns: (transfer none): %TRUE if @info has an attribute named @attribute,
* %FALSE otherwise.
*/
gboolean
g_file_info_get_attribute_data (GFileInfo *info,
const char *attribute,
GFileAttributeType *type,
gpointer *value_pp,
GFileAttributeStatus *status)
{
GFileAttributeValue *value;
value = g_file_info_find_value_by_name (info, attribute);
if (value == NULL)
return FALSE;
if (status)
*status = value->status;
if (type)
*type = value->type;
if (value_pp)
*value_pp = _g_file_attribute_value_peek_as_pointer (value);
return TRUE;
}
/**
* g_file_info_get_attribute_status:
* @info: a #GFileInfo
* @attribute: a file attribute key
*
* Gets the attribute status for an attribute key.
*
* Returns: a #GFileAttributeStatus for the given @attribute, or
* %G_FILE_ATTRIBUTE_STATUS_UNSET if the key is invalid.
*
*/
GFileAttributeStatus
g_file_info_get_attribute_status (GFileInfo *info,
const char *attribute)
{
GFileAttributeValue *val;
g_return_val_if_fail (G_IS_FILE_INFO (info), 0);
g_return_val_if_fail (attribute != NULL && *attribute != '\0', 0);
val = g_file_info_find_value_by_name (info, attribute);
if (val)
return val->status;
return G_FILE_ATTRIBUTE_STATUS_UNSET;
}
/**
* g_file_info_set_attribute_status:
* @info: a #GFileInfo
* @attribute: a file attribute key
* @status: a #GFileAttributeStatus
*
* Sets the attribute status for an attribute key. This is only
* needed by external code that implement g_file_set_attributes_from_info()
* or similar functions.
*
* The attribute must exist in @info for this to work. Otherwise %FALSE
* is returned and @info is unchanged.
*
* Returns: %TRUE if the status was changed, %FALSE if the key was not set.
*
* Since: 2.22
*/
gboolean
g_file_info_set_attribute_status (GFileInfo *info,
const char *attribute,
GFileAttributeStatus status)
{
GFileAttributeValue *val;
g_return_val_if_fail (G_IS_FILE_INFO (info), FALSE);
g_return_val_if_fail (attribute != NULL && *attribute != '\0', FALSE);
val = g_file_info_find_value_by_name (info, attribute);
if (val)
{
val->status = status;
return TRUE;
}
return FALSE;
}
GFileAttributeValue *
_g_file_info_get_attribute_value (GFileInfo *info,
const char *attribute)
{
g_return_val_if_fail (G_IS_FILE_INFO (info), NULL);
g_return_val_if_fail (attribute != NULL && *attribute != '\0', NULL);
return g_file_info_find_value_by_name (info, attribute);
}
/**
* g_file_info_get_attribute_as_string:
* @info: a #GFileInfo.
* @attribute: a file attribute key.
*
* Gets the value of a attribute, formated as a string.
* This escapes things as needed to make the string valid
* utf8.
*
* Returns: a UTF-8 string associated with the given @attribute.
* When you're done with the string it must be freed with g_free().
**/
char *
g_file_info_get_attribute_as_string (GFileInfo *info,
const char *attribute)
{
GFileAttributeValue *val;
val = _g_file_info_get_attribute_value (info, attribute);
if (val)
return _g_file_attribute_value_as_string (val);
return NULL;
}
/**
* g_file_info_get_attribute_object:
* @info: a #GFileInfo.
* @attribute: a file attribute key.
*
* Gets the value of a #GObject attribute. If the attribute does
* not contain a #GObject, %NULL will be returned.
*
* Returns: (transfer none): a #GObject associated with the given @attribute, or
* %NULL otherwise.
**/
GObject *
g_file_info_get_attribute_object (GFileInfo *info,
const char *attribute)
{
GFileAttributeValue *value;
g_return_val_if_fail (G_IS_FILE_INFO (info), NULL);
g_return_val_if_fail (attribute != NULL && *attribute != '\0', NULL);
value = g_file_info_find_value_by_name (info, attribute);
return _g_file_attribute_value_get_object (value);
}
/**
* g_file_info_get_attribute_string:
* @info: a #GFileInfo.
* @attribute: a file attribute key.
*
* Gets the value of a string attribute. If the attribute does
* not contain a string, %NULL will be returned.
*
* Returns: the contents of the @attribute value as a UTF-8 string, or
* %NULL otherwise.
**/
const char *
g_file_info_get_attribute_string (GFileInfo *info,
const char *attribute)
{
GFileAttributeValue *value;
g_return_val_if_fail (G_IS_FILE_INFO (info), NULL);
g_return_val_if_fail (attribute != NULL && *attribute != '\0', NULL);
value = g_file_info_find_value_by_name (info, attribute);
return _g_file_attribute_value_get_string (value);
}
/**
* g_file_info_get_attribute_byte_string:
* @info: a #GFileInfo.
* @attribute: a file attribute key.
*
* Gets the value of a byte string attribute. If the attribute does
* not contain a byte string, %NULL will be returned.
*
* Returns: the contents of the @attribute value as a byte string, or
* %NULL otherwise.
**/
const char *
g_file_info_get_attribute_byte_string (GFileInfo *info,
const char *attribute)
{
GFileAttributeValue *value;
g_return_val_if_fail (G_IS_FILE_INFO (info), NULL);
g_return_val_if_fail (attribute != NULL && *attribute != '\0', NULL);
value = g_file_info_find_value_by_name (info, attribute);
return _g_file_attribute_value_get_byte_string (value);
}
/**
* g_file_info_get_attribute_stringv:
* @info: a #GFileInfo.
* @attribute: a file attribute key.
*
* Gets the value of a stringv attribute. If the attribute does
* not contain a stringv, %NULL will be returned.
*
* Returns: (transfer none): the contents of the @attribute value as a stringv, or
* %NULL otherwise. Do not free. These returned strings are UTF-8.
*
* Since: 2.22
**/
char **
g_file_info_get_attribute_stringv (GFileInfo *info,
const char *attribute)
{
GFileAttributeValue *value;
g_return_val_if_fail (G_IS_FILE_INFO (info), NULL);
g_return_val_if_fail (attribute != NULL && *attribute != '\0', NULL);
value = g_file_info_find_value_by_name (info, attribute);
return _g_file_attribute_value_get_stringv (value);
}
/**
* g_file_info_get_attribute_boolean:
* @info: a #GFileInfo.
* @attribute: a file attribute key.
*
* Gets the value of a boolean attribute. If the attribute does not
* contain a boolean value, %FALSE will be returned.
*
* Returns: the boolean value contained within the attribute.
**/
gboolean
g_file_info_get_attribute_boolean (GFileInfo *info,
const char *attribute)
{
GFileAttributeValue *value;
g_return_val_if_fail (G_IS_FILE_INFO (info), FALSE);
g_return_val_if_fail (attribute != NULL && *attribute != '\0', FALSE);
value = g_file_info_find_value_by_name (info, attribute);
return _g_file_attribute_value_get_boolean (value);
}
/**
* g_file_info_get_attribute_uint32:
* @info: a #GFileInfo.
* @attribute: a file attribute key.
*
* Gets an unsigned 32-bit integer contained within the attribute. If the
* attribute does not contain an unsigned 32-bit integer, or is invalid,
* 0 will be returned.
*
* Returns: an unsigned 32-bit integer from the attribute.
**/
guint32
g_file_info_get_attribute_uint32 (GFileInfo *info,
const char *attribute)
{
GFileAttributeValue *value;
g_return_val_if_fail (G_IS_FILE_INFO (info), 0);
g_return_val_if_fail (attribute != NULL && *attribute != '\0', 0);
value = g_file_info_find_value_by_name (info, attribute);
return _g_file_attribute_value_get_uint32 (value);
}
/**
* g_file_info_get_attribute_int32:
* @info: a #GFileInfo.
* @attribute: a file attribute key.
*
* Gets a signed 32-bit integer contained within the attribute. If the
* attribute does not contain a signed 32-bit integer, or is invalid,
* 0 will be returned.
*
* Returns: a signed 32-bit integer from the attribute.
**/
gint32
g_file_info_get_attribute_int32 (GFileInfo *info,
const char *attribute)
{
GFileAttributeValue *value;
g_return_val_if_fail (G_IS_FILE_INFO (info), 0);
g_return_val_if_fail (attribute != NULL && *attribute != '\0', 0);
value = g_file_info_find_value_by_name (info, attribute);
return _g_file_attribute_value_get_int32 (value);
}
/**
* g_file_info_get_attribute_uint64:
* @info: a #GFileInfo.
* @attribute: a file attribute key.
*
* Gets a unsigned 64-bit integer contained within the attribute. If the
* attribute does not contain an unsigned 64-bit integer, or is invalid,
* 0 will be returned.
*
* Returns: a unsigned 64-bit integer from the attribute.
**/
guint64
g_file_info_get_attribute_uint64 (GFileInfo *info,
const char *attribute)
{
GFileAttributeValue *value;
g_return_val_if_fail (G_IS_FILE_INFO (info), 0);
g_return_val_if_fail (attribute != NULL && *attribute != '\0', 0);
value = g_file_info_find_value_by_name (info, attribute);
return _g_file_attribute_value_get_uint64 (value);
}
/**
* g_file_info_get_attribute_int64:
* @info: a #GFileInfo.
* @attribute: a file attribute key.
*
* Gets a signed 64-bit integer contained within the attribute. If the
* attribute does not contain an signed 64-bit integer, or is invalid,
* 0 will be returned.
*
* Returns: a signed 64-bit integer from the attribute.
**/
gint64
g_file_info_get_attribute_int64 (GFileInfo *info,
const char *attribute)
{
GFileAttributeValue *value;
g_return_val_if_fail (G_IS_FILE_INFO (info), 0);
g_return_val_if_fail (attribute != NULL && *attribute != '\0', 0);
value = g_file_info_find_value_by_name (info, attribute);
return _g_file_attribute_value_get_int64 (value);
}
static GFileAttributeValue *
g_file_info_create_value (GFileInfo *info,
guint32 attr_id)
{
GFileAttribute *attrs;
int i;
if (info->mask != NO_ATTRIBUTE_MASK &&
!_g_file_attribute_matcher_matches_id (info->mask, attr_id))
return NULL;
i = g_file_info_find_place (info, attr_id);
attrs = (GFileAttribute *)info->attributes->data;
if (i < info->attributes->len &&
attrs[i].attribute == attr_id)
return &attrs[i].value;
else
{
GFileAttribute attr = { 0 };
attr.attribute = attr_id;
g_array_insert_val (info->attributes, i, attr);
attrs = (GFileAttribute *)info->attributes->data;
return &attrs[i].value;
}
}
void
_g_file_info_set_attribute_by_id (GFileInfo *info,
guint32 attribute,
GFileAttributeType type,
gpointer value_p)
{
GFileAttributeValue *value;
value = g_file_info_create_value (info, attribute);
if (value)
_g_file_attribute_value_set_from_pointer (value, type, value_p, TRUE);
}
/**
* g_file_info_set_attribute:
* @info: a #GFileInfo.
* @attribute: a file attribute key.
* @type: a #GFileAttributeType
* @value_p: pointer to the value
*
* Sets the @attribute to contain the given value, if possible. To unset the
* attribute, use %G_ATTRIBUTE_TYPE_INVALID for @type.
**/
void
g_file_info_set_attribute (GFileInfo *info,
const char *attribute,
GFileAttributeType type,
gpointer value_p)
{
g_return_if_fail (G_IS_FILE_INFO (info));
g_return_if_fail (attribute != NULL && *attribute != '\0');
_g_file_info_set_attribute_by_id (info, lookup_attribute (attribute), type, value_p);
}
void
_g_file_info_set_attribute_object_by_id (GFileInfo *info,
guint32 attribute,
GObject *attr_value)
{
GFileAttributeValue *value;
value = g_file_info_create_value (info, attribute);
if (value)
_g_file_attribute_value_set_object (value, attr_value);
}
/**
* g_file_info_set_attribute_object:
* @info: a #GFileInfo.
* @attribute: a file attribute key.
* @attr_value: a #GObject.
*
* Sets the @attribute to contain the given @attr_value,
* if possible.
**/
void
g_file_info_set_attribute_object (GFileInfo *info,
const char *attribute,
GObject *attr_value)
{
g_return_if_fail (G_IS_FILE_INFO (info));
g_return_if_fail (attribute != NULL && *attribute != '\0');
g_return_if_fail (G_IS_OBJECT (attr_value));
_g_file_info_set_attribute_object_by_id (info,
lookup_attribute (attribute),
attr_value);
}
void
_g_file_info_set_attribute_stringv_by_id (GFileInfo *info,
guint32 attribute,
char **attr_value)
{
GFileAttributeValue *value;
value = g_file_info_create_value (info, attribute);
if (value)
_g_file_attribute_value_set_stringv (value, attr_value);
}
/**
* g_file_info_set_attribute_stringv:
* @info: a #GFileInfo.
* @attribute: a file attribute key
* @attr_value: (array) (element-type utf8): a %NULL terminated array of UTF-8 strings.
*
* Sets the @attribute to contain the given @attr_value,
* if possible.
*
* Sinze: 2.22
**/
void
g_file_info_set_attribute_stringv (GFileInfo *info,
const char *attribute,
char **attr_value)
{
g_return_if_fail (G_IS_FILE_INFO (info));
g_return_if_fail (attribute != NULL && *attribute != '\0');
g_return_if_fail (attr_value != NULL);
_g_file_info_set_attribute_stringv_by_id (info,
lookup_attribute (attribute),
attr_value);
}
void
_g_file_info_set_attribute_string_by_id (GFileInfo *info,
guint32 attribute,
const char *attr_value)
{
GFileAttributeValue *value;
value = g_file_info_create_value (info, attribute);
if (value)
_g_file_attribute_value_set_string (value, attr_value);
}
/**
* g_file_info_set_attribute_string:
* @info: a #GFileInfo.
* @attribute: a file attribute key.
* @attr_value: a UTF-8 string.
*
* Sets the @attribute to contain the given @attr_value,
* if possible.
**/
void
g_file_info_set_attribute_string (GFileInfo *info,
const char *attribute,
const char *attr_value)
{
g_return_if_fail (G_IS_FILE_INFO (info));
g_return_if_fail (attribute != NULL && *attribute != '\0');
g_return_if_fail (attr_value != NULL);
_g_file_info_set_attribute_string_by_id (info,
lookup_attribute (attribute),
attr_value);
}
void
_g_file_info_set_attribute_byte_string_by_id (GFileInfo *info,
guint32 attribute,
const char *attr_value)
{
GFileAttributeValue *value;
value = g_file_info_create_value (info, attribute);
if (value)
_g_file_attribute_value_set_byte_string (value, attr_value);
}
/**
* g_file_info_set_attribute_byte_string:
* @info: a #GFileInfo.
* @attribute: a file attribute key.
* @attr_value: a byte string.
*
* Sets the @attribute to contain the given @attr_value,
* if possible.
**/
void
g_file_info_set_attribute_byte_string (GFileInfo *info,
const char *attribute,
const char *attr_value)
{
g_return_if_fail (G_IS_FILE_INFO (info));
g_return_if_fail (attribute != NULL && *attribute != '\0');
g_return_if_fail (attr_value != NULL);
_g_file_info_set_attribute_byte_string_by_id (info,
lookup_attribute (attribute),
attr_value);
}
void
_g_file_info_set_attribute_boolean_by_id (GFileInfo *info,
guint32 attribute,
gboolean attr_value)
{
GFileAttributeValue *value;
value = g_file_info_create_value (info, attribute);
if (value)
_g_file_attribute_value_set_boolean (value, attr_value);
}
/**
* g_file_info_set_attribute_boolean:
* @info: a #GFileInfo.
* @attribute: a file attribute key.
* @attr_value: a boolean value.
*
* Sets the @attribute to contain the given @attr_value,
* if possible.
**/
void
g_file_info_set_attribute_boolean (GFileInfo *info,
const char *attribute,
gboolean attr_value)
{
g_return_if_fail (G_IS_FILE_INFO (info));
g_return_if_fail (attribute != NULL && *attribute != '\0');
_g_file_info_set_attribute_boolean_by_id (info,
lookup_attribute (attribute),
attr_value);
}
void
_g_file_info_set_attribute_uint32_by_id (GFileInfo *info,
guint32 attribute,
guint32 attr_value)
{
GFileAttributeValue *value;
value = g_file_info_create_value (info, attribute);
if (value)
_g_file_attribute_value_set_uint32 (value, attr_value);
}
/**
* g_file_info_set_attribute_uint32:
* @info: a #GFileInfo.
* @attribute: a file attribute key.
* @attr_value: an unsigned 32-bit integer.
*
* Sets the @attribute to contain the given @attr_value,
* if possible.
**/
void
g_file_info_set_attribute_uint32 (GFileInfo *info,
const char *attribute,
guint32 attr_value)
{
g_return_if_fail (G_IS_FILE_INFO (info));
g_return_if_fail (attribute != NULL && *attribute != '\0');
_g_file_info_set_attribute_uint32_by_id (info,
lookup_attribute (attribute),
attr_value);
}
void
_g_file_info_set_attribute_int32_by_id (GFileInfo *info,
guint32 attribute,
gint32 attr_value)
{
GFileAttributeValue *value;
value = g_file_info_create_value (info, attribute);
if (value)
_g_file_attribute_value_set_int32 (value, attr_value);
}
/**
* g_file_info_set_attribute_int32:
* @info: a #GFileInfo.
* @attribute: a file attribute key.
* @attr_value: a signed 32-bit integer
*
* Sets the @attribute to contain the given @attr_value,
* if possible.
**/
void
g_file_info_set_attribute_int32 (GFileInfo *info,
const char *attribute,
gint32 attr_value)
{
g_return_if_fail (G_IS_FILE_INFO (info));
g_return_if_fail (attribute != NULL && *attribute != '\0');
_g_file_info_set_attribute_int32_by_id (info,
lookup_attribute (attribute),
attr_value);
}
void
_g_file_info_set_attribute_uint64_by_id (GFileInfo *info,
guint32 attribute,
guint64 attr_value)
{
GFileAttributeValue *value;
value = g_file_info_create_value (info, attribute);
if (value)
_g_file_attribute_value_set_uint64 (value, attr_value);
}
/**
* g_file_info_set_attribute_uint64:
* @info: a #GFileInfo.
* @attribute: a file attribute key.
* @attr_value: an unsigned 64-bit integer.
*
* Sets the @attribute to contain the given @attr_value,
* if possible.
**/
void
g_file_info_set_attribute_uint64 (GFileInfo *info,
const char *attribute,
guint64 attr_value)
{
g_return_if_fail (G_IS_FILE_INFO (info));
g_return_if_fail (attribute != NULL && *attribute != '\0');
_g_file_info_set_attribute_uint64_by_id (info,
lookup_attribute (attribute),
attr_value);
}
void
_g_file_info_set_attribute_int64_by_id (GFileInfo *info,
guint32 attribute,
gint64 attr_value)
{
GFileAttributeValue *value;
value = g_file_info_create_value (info, attribute);
if (value)
_g_file_attribute_value_set_int64 (value, attr_value);
}
/**
* g_file_info_set_attribute_int64:
* @info: a #GFileInfo.
* @attribute: attribute name to set.
* @attr_value: int64 value to set attribute to.
*
* Sets the @attribute to contain the given @attr_value,
* if possible.
*
**/
void
g_file_info_set_attribute_int64 (GFileInfo *info,
const char *attribute,
gint64 attr_value)
{
g_return_if_fail (G_IS_FILE_INFO (info));
g_return_if_fail (attribute != NULL && *attribute != '\0');
_g_file_info_set_attribute_int64_by_id (info,
lookup_attribute (attribute),
attr_value);
}
/* Helper getters */
/**
* g_file_info_get_deletion_date:
* @info: a #GFileInfo.
*
* Returns the #GDateTime representing the deletion date of the file, as
* available in G_FILE_ATTRIBUTE_TRASH_DELETION_DATE. If the
* G_FILE_ATTRIBUTE_TRASH_DELETION_DATE attribute is unset, %NULL is returned.
*
* Returns: a #GDateTime, or %NULL.
*
* Since: 2.36
**/
GDateTime *
g_file_info_get_deletion_date (GFileInfo *info)
{
static guint32 attr = 0;
GFileAttributeValue *value;
const char *date_str;
GTimeVal tv;
g_return_val_if_fail (G_IS_FILE_INFO (info), FALSE);
if (attr == 0)
attr = lookup_attribute (G_FILE_ATTRIBUTE_TRASH_DELETION_DATE);
value = g_file_info_find_value (info, attr);
date_str = _g_file_attribute_value_get_string (value);
if (!date_str)
return NULL;
if (g_time_val_from_iso8601 (date_str, &tv) == FALSE)
return NULL;
return g_date_time_new_from_timeval_local (&tv);
}
/**
* g_file_info_get_file_type:
* @info: a #GFileInfo.
*
* Gets a file's type (whether it is a regular file, symlink, etc).
* This is different from the file's content type, see g_file_info_get_content_type().
*
* Returns: a #GFileType for the given file.
**/
GFileType
g_file_info_get_file_type (GFileInfo *info)
{
static guint32 attr = 0;
GFileAttributeValue *value;
g_return_val_if_fail (G_IS_FILE_INFO (info), G_FILE_TYPE_UNKNOWN);
if (attr == 0)
attr = lookup_attribute (G_FILE_ATTRIBUTE_STANDARD_TYPE);
value = g_file_info_find_value (info, attr);
return (GFileType)_g_file_attribute_value_get_uint32 (value);
}
/**
* g_file_info_get_is_hidden:
* @info: a #GFileInfo.
*
* Checks if a file is hidden.
*
* Returns: %TRUE if the file is a hidden file, %FALSE otherwise.
**/
gboolean
g_file_info_get_is_hidden (GFileInfo *info)
{
static guint32 attr = 0;
GFileAttributeValue *value;
g_return_val_if_fail (G_IS_FILE_INFO (info), FALSE);
if (attr == 0)
attr = lookup_attribute (G_FILE_ATTRIBUTE_STANDARD_IS_HIDDEN);
value = g_file_info_find_value (info, attr);
return (GFileType)_g_file_attribute_value_get_boolean (value);
}
/**
* g_file_info_get_is_backup:
* @info: a #GFileInfo.
*
* Checks if a file is a backup file.
*
* Returns: %TRUE if file is a backup file, %FALSE otherwise.
**/
gboolean
g_file_info_get_is_backup (GFileInfo *info)
{
static guint32 attr = 0;
GFileAttributeValue *value;
g_return_val_if_fail (G_IS_FILE_INFO (info), FALSE);
if (attr == 0)
attr = lookup_attribute (G_FILE_ATTRIBUTE_STANDARD_IS_BACKUP);
value = g_file_info_find_value (info, attr);
return (GFileType)_g_file_attribute_value_get_boolean (value);
}
/**
* g_file_info_get_is_symlink:
* @info: a #GFileInfo.
*
* Checks if a file is a symlink.
*
* Returns: %TRUE if the given @info is a symlink.
**/
gboolean
g_file_info_get_is_symlink (GFileInfo *info)
{
static guint32 attr = 0;
GFileAttributeValue *value;
g_return_val_if_fail (G_IS_FILE_INFO (info), FALSE);
if (attr == 0)
attr = lookup_attribute (G_FILE_ATTRIBUTE_STANDARD_IS_SYMLINK);
value = g_file_info_find_value (info, attr);
return (GFileType)_g_file_attribute_value_get_boolean (value);
}
/**
* g_file_info_get_name:
* @info: a #GFileInfo.
*
* Gets the name for a file.
*
* Returns: a string containing the file name.
**/
const char *
g_file_info_get_name (GFileInfo *info)
{
static guint32 attr = 0;
GFileAttributeValue *value;
g_return_val_if_fail (G_IS_FILE_INFO (info), NULL);
if (attr == 0)
attr = lookup_attribute (G_FILE_ATTRIBUTE_STANDARD_NAME);
value = g_file_info_find_value (info, attr);
return _g_file_attribute_value_get_byte_string (value);
}
/**
* g_file_info_get_display_name:
* @info: a #GFileInfo.
*
* Gets a display name for a file.
*
* Returns: a string containing the display name.
**/
const char *
g_file_info_get_display_name (GFileInfo *info)
{
static guint32 attr = 0;
GFileAttributeValue *value;
g_return_val_if_fail (G_IS_FILE_INFO (info), NULL);
if (attr == 0)
attr = lookup_attribute (G_FILE_ATTRIBUTE_STANDARD_DISPLAY_NAME);
value = g_file_info_find_value (info, attr);
return _g_file_attribute_value_get_string (value);
}
/**
* g_file_info_get_edit_name:
* @info: a #GFileInfo.
*
* Gets the edit name for a file.
*
* Returns: a string containing the edit name.
**/
const char *
g_file_info_get_edit_name (GFileInfo *info)
{
static guint32 attr = 0;
GFileAttributeValue *value;
g_return_val_if_fail (G_IS_FILE_INFO (info), NULL);
if (attr == 0)
attr = lookup_attribute (G_FILE_ATTRIBUTE_STANDARD_EDIT_NAME);
value = g_file_info_find_value (info, attr);
return _g_file_attribute_value_get_string (value);
}
/**
* g_file_info_get_icon:
* @info: a #GFileInfo.
*
* Gets the icon for a file.
*
* Returns: (transfer none): #GIcon for the given @info.
**/
GIcon *
g_file_info_get_icon (GFileInfo *info)
{
static guint32 attr = 0;
GFileAttributeValue *value;
GObject *obj;
g_return_val_if_fail (G_IS_FILE_INFO (info), NULL);
if (attr == 0)
attr = lookup_attribute (G_FILE_ATTRIBUTE_STANDARD_ICON);
value = g_file_info_find_value (info, attr);
obj = _g_file_attribute_value_get_object (value);
if (G_IS_ICON (obj))
return G_ICON (obj);
return NULL;
}
/**
* g_file_info_get_symbolic_icon:
* @info: a #GFileInfo.
*
* Gets the symbolic icon for a file.
*
* Returns: (transfer none): #GIcon for the given @info.
*
* Since: 2.34
**/
GIcon *
g_file_info_get_symbolic_icon (GFileInfo *info)
{
static guint32 attr = 0;
GFileAttributeValue *value;
GObject *obj;
g_return_val_if_fail (G_IS_FILE_INFO (info), NULL);
if (attr == 0)
attr = lookup_attribute (G_FILE_ATTRIBUTE_STANDARD_SYMBOLIC_ICON);
value = g_file_info_find_value (info, attr);
obj = _g_file_attribute_value_get_object (value);
if (G_IS_ICON (obj))
return G_ICON (obj);
return NULL;
}
/**
* g_file_info_get_content_type:
* @info: a #GFileInfo.
*
* Gets the file's content type.
*
* Returns: a string containing the file's content type.
**/
const char *
g_file_info_get_content_type (GFileInfo *info)
{
static guint32 attr = 0;
GFileAttributeValue *value;
g_return_val_if_fail (G_IS_FILE_INFO (info), NULL);
if (attr == 0)
attr = lookup_attribute (G_FILE_ATTRIBUTE_STANDARD_CONTENT_TYPE);
value = g_file_info_find_value (info, attr);
return _g_file_attribute_value_get_string (value);
}
/**
* g_file_info_get_size:
* @info: a #GFileInfo.
*
* Gets the file's size.
*
* Returns: a #goffset containing the file's size.
**/
goffset
g_file_info_get_size (GFileInfo *info)
{
static guint32 attr = 0;
GFileAttributeValue *value;
g_return_val_if_fail (G_IS_FILE_INFO (info), (goffset) 0);
if (attr == 0)
attr = lookup_attribute (G_FILE_ATTRIBUTE_STANDARD_SIZE);
value = g_file_info_find_value (info, attr);
return (goffset) _g_file_attribute_value_get_uint64 (value);
}
/**
* g_file_info_get_modification_time:
* @info: a #GFileInfo.
* @result: (out caller-allocates): a #GTimeVal.
*
* Gets the modification time of the current @info and sets it
* in @result.
**/
void
g_file_info_get_modification_time (GFileInfo *info,
GTimeVal *result)
{
static guint32 attr_mtime = 0, attr_mtime_usec;
GFileAttributeValue *value;
g_return_if_fail (G_IS_FILE_INFO (info));
g_return_if_fail (result != NULL);
if (attr_mtime == 0)
{
attr_mtime = lookup_attribute (G_FILE_ATTRIBUTE_TIME_MODIFIED);
attr_mtime_usec = lookup_attribute (G_FILE_ATTRIBUTE_TIME_MODIFIED_USEC);
}
value = g_file_info_find_value (info, attr_mtime);
result->tv_sec = _g_file_attribute_value_get_uint64 (value);
value = g_file_info_find_value (info, attr_mtime_usec);
result->tv_usec = _g_file_attribute_value_get_uint32 (value);
}
/**
* g_file_info_get_symlink_target:
* @info: a #GFileInfo.
*
* Gets the symlink target for a given #GFileInfo.
*
* Returns: a string containing the symlink target.
**/
const char *
g_file_info_get_symlink_target (GFileInfo *info)
{
static guint32 attr = 0;
GFileAttributeValue *value;
g_return_val_if_fail (G_IS_FILE_INFO (info), NULL);
if (attr == 0)
attr = lookup_attribute (G_FILE_ATTRIBUTE_STANDARD_SYMLINK_TARGET);
value = g_file_info_find_value (info, attr);
return _g_file_attribute_value_get_byte_string (value);
}
/**
* g_file_info_get_etag:
* @info: a #GFileInfo.
*
* Gets the [entity tag][gfile-etag] for a given
* #GFileInfo. See %G_FILE_ATTRIBUTE_ETAG_VALUE.
*
* Returns: a string containing the value of the "etag:value" attribute.
**/
const char *
g_file_info_get_etag (GFileInfo *info)
{
static guint32 attr = 0;
GFileAttributeValue *value;
g_return_val_if_fail (G_IS_FILE_INFO (info), NULL);
if (attr == 0)
attr = lookup_attribute (G_FILE_ATTRIBUTE_ETAG_VALUE);
value = g_file_info_find_value (info, attr);
return _g_file_attribute_value_get_string (value);
}
/**
* g_file_info_get_sort_order:
* @info: a #GFileInfo.
*
* Gets the value of the sort_order attribute from the #GFileInfo.
* See %G_FILE_ATTRIBUTE_STANDARD_SORT_ORDER.
*
* Returns: a #gint32 containing the value of the "standard::sort_order" attribute.
**/
gint32
g_file_info_get_sort_order (GFileInfo *info)
{
static guint32 attr = 0;
GFileAttributeValue *value;
g_return_val_if_fail (G_IS_FILE_INFO (info), 0);
if (attr == 0)
attr = lookup_attribute (G_FILE_ATTRIBUTE_STANDARD_SORT_ORDER);
value = g_file_info_find_value (info, attr);
return _g_file_attribute_value_get_int32 (value);
}
/* Helper setters: */
/**
* g_file_info_set_file_type:
* @info: a #GFileInfo.
* @type: a #GFileType.
*
* Sets the file type in a #GFileInfo to @type.
* See %G_FILE_ATTRIBUTE_STANDARD_TYPE.
**/
void
g_file_info_set_file_type (GFileInfo *info,
GFileType type)
{
static guint32 attr = 0;
GFileAttributeValue *value;
g_return_if_fail (G_IS_FILE_INFO (info));
if (attr == 0)
attr = lookup_attribute (G_FILE_ATTRIBUTE_STANDARD_TYPE);
value = g_file_info_create_value (info, attr);
if (value)
_g_file_attribute_value_set_uint32 (value, type);
}
/**
* g_file_info_set_is_hidden:
* @info: a #GFileInfo.
* @is_hidden: a #gboolean.
*
* Sets the "is_hidden" attribute in a #GFileInfo according to @is_hidden.
* See %G_FILE_ATTRIBUTE_STANDARD_IS_HIDDEN.
**/
void
g_file_info_set_is_hidden (GFileInfo *info,
gboolean is_hidden)
{
static guint32 attr = 0;
GFileAttributeValue *value;
g_return_if_fail (G_IS_FILE_INFO (info));
if (attr == 0)
attr = lookup_attribute (G_FILE_ATTRIBUTE_STANDARD_IS_HIDDEN);
value = g_file_info_create_value (info, attr);
if (value)
_g_file_attribute_value_set_boolean (value, is_hidden);
}
/**
* g_file_info_set_is_symlink:
* @info: a #GFileInfo.
* @is_symlink: a #gboolean.
*
* Sets the "is_symlink" attribute in a #GFileInfo according to @is_symlink.
* See %G_FILE_ATTRIBUTE_STANDARD_IS_SYMLINK.
**/
void
g_file_info_set_is_symlink (GFileInfo *info,
gboolean is_symlink)
{
static guint32 attr = 0;
GFileAttributeValue *value;
g_return_if_fail (G_IS_FILE_INFO (info));
if (attr == 0)
attr = lookup_attribute (G_FILE_ATTRIBUTE_STANDARD_IS_SYMLINK);
value = g_file_info_create_value (info, attr);
if (value)
_g_file_attribute_value_set_boolean (value, is_symlink);
}
/**
* g_file_info_set_name:
* @info: a #GFileInfo.
* @name: a string containing a name.
*
* Sets the name attribute for the current #GFileInfo.
* See %G_FILE_ATTRIBUTE_STANDARD_NAME.
**/
void
g_file_info_set_name (GFileInfo *info,
const char *name)
{
static guint32 attr = 0;
GFileAttributeValue *value;
g_return_if_fail (G_IS_FILE_INFO (info));
g_return_if_fail (name != NULL);
if (attr == 0)
attr = lookup_attribute (G_FILE_ATTRIBUTE_STANDARD_NAME);
value = g_file_info_create_value (info, attr);
if (value)
_g_file_attribute_value_set_byte_string (value, name);
}
/**
* g_file_info_set_display_name:
* @info: a #GFileInfo.
* @display_name: a string containing a display name.
*
* Sets the display name for the current #GFileInfo.
* See %G_FILE_ATTRIBUTE_STANDARD_DISPLAY_NAME.
**/
void
g_file_info_set_display_name (GFileInfo *info,
const char *display_name)
{
static guint32 attr = 0;
GFileAttributeValue *value;
g_return_if_fail (G_IS_FILE_INFO (info));
g_return_if_fail (display_name != NULL);
if (attr == 0)
attr = lookup_attribute (G_FILE_ATTRIBUTE_STANDARD_DISPLAY_NAME);
value = g_file_info_create_value (info, attr);
if (value)
_g_file_attribute_value_set_string (value, display_name);
}
/**
* g_file_info_set_edit_name:
* @info: a #GFileInfo.
* @edit_name: a string containing an edit name.
*
* Sets the edit name for the current file.
* See %G_FILE_ATTRIBUTE_STANDARD_EDIT_NAME.
**/
void
g_file_info_set_edit_name (GFileInfo *info,
const char *edit_name)
{
static guint32 attr = 0;
GFileAttributeValue *value;
g_return_if_fail (G_IS_FILE_INFO (info));
g_return_if_fail (edit_name != NULL);
if (attr == 0)
attr = lookup_attribute (G_FILE_ATTRIBUTE_STANDARD_EDIT_NAME);
value = g_file_info_create_value (info, attr);
if (value)
_g_file_attribute_value_set_string (value, edit_name);
}
/**
* g_file_info_set_icon:
* @info: a #GFileInfo.
* @icon: a #GIcon.
*
* Sets the icon for a given #GFileInfo.
* See %G_FILE_ATTRIBUTE_STANDARD_ICON.
**/
void
g_file_info_set_icon (GFileInfo *info,
GIcon *icon)
{
static guint32 attr = 0;
GFileAttributeValue *value;
g_return_if_fail (G_IS_FILE_INFO (info));
g_return_if_fail (G_IS_ICON (icon));
if (attr == 0)
attr = lookup_attribute (G_FILE_ATTRIBUTE_STANDARD_ICON);
value = g_file_info_create_value (info, attr);
if (value)
_g_file_attribute_value_set_object (value, G_OBJECT (icon));
}
/**
* g_file_info_set_symbolic_icon:
* @info: a #GFileInfo.
* @icon: a #GIcon.
*
* Sets the symbolic icon for a given #GFileInfo.
* See %G_FILE_ATTRIBUTE_STANDARD_SYMBOLIC_ICON.
*
* Since: 2.34
**/
void
g_file_info_set_symbolic_icon (GFileInfo *info,
GIcon *icon)
{
static guint32 attr = 0;
GFileAttributeValue *value;
g_return_if_fail (G_IS_FILE_INFO (info));
g_return_if_fail (G_IS_ICON (icon));
if (attr == 0)
attr = lookup_attribute (G_FILE_ATTRIBUTE_STANDARD_SYMBOLIC_ICON);
value = g_file_info_create_value (info, attr);
if (value)
_g_file_attribute_value_set_object (value, G_OBJECT (icon));
}
/**
* g_file_info_set_content_type:
* @info: a #GFileInfo.
* @content_type: a content type. See [GContentType][gio-GContentType]
*
* Sets the content type attribute for a given #GFileInfo.
* See %G_FILE_ATTRIBUTE_STANDARD_CONTENT_TYPE.
**/
void
g_file_info_set_content_type (GFileInfo *info,
const char *content_type)
{
static guint32 attr = 0;
GFileAttributeValue *value;
g_return_if_fail (G_IS_FILE_INFO (info));
g_return_if_fail (content_type != NULL);
if (attr == 0)
attr = lookup_attribute (G_FILE_ATTRIBUTE_STANDARD_CONTENT_TYPE);
value = g_file_info_create_value (info, attr);
if (value)
_g_file_attribute_value_set_string (value, content_type);
}
/**
* g_file_info_set_size:
* @info: a #GFileInfo.
* @size: a #goffset containing the file's size.
*
* Sets the %G_FILE_ATTRIBUTE_STANDARD_SIZE attribute in the file info
* to the given size.
**/
void
g_file_info_set_size (GFileInfo *info,
goffset size)
{
static guint32 attr = 0;
GFileAttributeValue *value;
g_return_if_fail (G_IS_FILE_INFO (info));
if (attr == 0)
attr = lookup_attribute (G_FILE_ATTRIBUTE_STANDARD_SIZE);
value = g_file_info_create_value (info, attr);
if (value)
_g_file_attribute_value_set_uint64 (value, size);
}
/**
* g_file_info_set_modification_time:
* @info: a #GFileInfo.
* @mtime: a #GTimeVal.
*
* Sets the %G_FILE_ATTRIBUTE_TIME_MODIFIED attribute in the file
* info to the given time value.
**/
void
g_file_info_set_modification_time (GFileInfo *info,
GTimeVal *mtime)
{
static guint32 attr_mtime = 0, attr_mtime_usec;
GFileAttributeValue *value;
g_return_if_fail (G_IS_FILE_INFO (info));
g_return_if_fail (mtime != NULL);
if (attr_mtime == 0)
{
attr_mtime = lookup_attribute (G_FILE_ATTRIBUTE_TIME_MODIFIED);
attr_mtime_usec = lookup_attribute (G_FILE_ATTRIBUTE_TIME_MODIFIED_USEC);
}
value = g_file_info_create_value (info, attr_mtime);
if (value)
_g_file_attribute_value_set_uint64 (value, mtime->tv_sec);
value = g_file_info_create_value (info, attr_mtime_usec);
if (value)
_g_file_attribute_value_set_uint32 (value, mtime->tv_usec);
}
/**
* g_file_info_set_symlink_target:
* @info: a #GFileInfo.
* @symlink_target: a static string containing a path to a symlink target.
*
* Sets the %G_FILE_ATTRIBUTE_STANDARD_SYMLINK_TARGET attribute in the file info
* to the given symlink target.
**/
void
g_file_info_set_symlink_target (GFileInfo *info,
const char *symlink_target)
{
static guint32 attr = 0;
GFileAttributeValue *value;
g_return_if_fail (G_IS_FILE_INFO (info));
g_return_if_fail (symlink_target != NULL);
if (attr == 0)
attr = lookup_attribute (G_FILE_ATTRIBUTE_STANDARD_SYMLINK_TARGET);
value = g_file_info_create_value (info, attr);
if (value)
_g_file_attribute_value_set_byte_string (value, symlink_target);
}
/**
* g_file_info_set_sort_order:
* @info: a #GFileInfo.
* @sort_order: a sort order integer.
*
* Sets the sort order attribute in the file info structure. See
* %G_FILE_ATTRIBUTE_STANDARD_SORT_ORDER.
**/
void
g_file_info_set_sort_order (GFileInfo *info,
gint32 sort_order)
{
static guint32 attr = 0;
GFileAttributeValue *value;
g_return_if_fail (G_IS_FILE_INFO (info));
if (attr == 0)
attr = lookup_attribute (G_FILE_ATTRIBUTE_STANDARD_SORT_ORDER);
value = g_file_info_create_value (info, attr);
if (value)
_g_file_attribute_value_set_int32 (value, sort_order);
}
typedef struct {
guint32 id;
guint32 mask;
} SubMatcher;
struct _GFileAttributeMatcher {
gboolean all;
gint ref;
GArray *sub_matchers;
/* Interator */
guint32 iterator_ns;
gint iterator_pos;
};
G_DEFINE_BOXED_TYPE (GFileAttributeMatcher, g_file_attribute_matcher,
g_file_attribute_matcher_ref,
g_file_attribute_matcher_unref)
static gint
compare_sub_matchers (gconstpointer a,
gconstpointer b)
{
const SubMatcher *suba = a;
const SubMatcher *subb = b;
int diff;
diff = suba->id - subb->id;
if (diff)
return diff;
return suba->mask - subb->mask;
}
static gboolean
sub_matcher_matches (SubMatcher *matcher,
SubMatcher *submatcher)
{
if ((matcher->mask & submatcher->mask) != matcher->mask)
return FALSE;
return matcher->id == (submatcher->id & matcher->mask);
}
/* Call this function after modifying a matcher.
* It will ensure all the invariants other functions rely on.
*/
static GFileAttributeMatcher *
matcher_optimize (GFileAttributeMatcher *matcher)
{
SubMatcher *submatcher, *compare;
guint i, j;
/* remove sub_matchers if we match everything anyway */
if (matcher->all)
{
if (matcher->sub_matchers)
{
g_array_free (matcher->sub_matchers, TRUE);
matcher->sub_matchers = NULL;
}
return matcher;
}
if (matcher->sub_matchers->len == 0)
{
g_file_attribute_matcher_unref (matcher);
return NULL;
}
/* sort sub_matchers by id (and then mask), so we can bsearch
* and compare matchers in O(N) instead of O(N²) */
g_array_sort (matcher->sub_matchers, compare_sub_matchers);
/* remove duplicates and specific matches when we match the whole namespace */
j = 0;
compare = &g_array_index (matcher->sub_matchers, SubMatcher, j);
for (i = 1; i < matcher->sub_matchers->len; i++)
{
submatcher = &g_array_index (matcher->sub_matchers, SubMatcher, i);
if (sub_matcher_matches (compare, submatcher))
continue;
j++;
compare++;
if (j < i)
*compare = *submatcher;
}
g_array_set_size (matcher->sub_matchers, j + 1);
return matcher;
}
/**
* g_file_attribute_matcher_new:
* @attributes: an attribute string to match.
*
* Creates a new file attribute matcher, which matches attributes
* against a given string. #GFileAttributeMatchers are reference
* counted structures, and are created with a reference count of 1. If
* the number of references falls to 0, the #GFileAttributeMatcher is
* automatically destroyed.
*
* The @attribute string should be formatted with specific keys separated
* from namespaces with a double colon. Several "namespace::key" strings may be
* concatenated with a single comma (e.g. "standard::type,standard::is-hidden").
* The wildcard "*" may be used to match all keys and namespaces, or
* "namespace::*" will match all keys in a given namespace.
*
* ## Examples of file attribute matcher strings and results
*
* - `"*"`: matches all attributes.
* - `"standard::is-hidden"`: matches only the key is-hidden in the
* standard namespace.
* - `"standard::type,unix::*"`: matches the type key in the standard
* namespace and all keys in the unix namespace.
*
* Returns: a #GFileAttributeMatcher
*/
GFileAttributeMatcher *
g_file_attribute_matcher_new (const char *attributes)
{
char **split;
char *colon;
int i;
GFileAttributeMatcher *matcher;
if (attributes == NULL || *attributes == '\0')
return NULL;
matcher = g_malloc0 (sizeof (GFileAttributeMatcher));
matcher->ref = 1;
matcher->sub_matchers = g_array_new (FALSE, FALSE, sizeof (SubMatcher));
split = g_strsplit (attributes, ",", -1);
for (i = 0; split[i] != NULL; i++)
{
if (strcmp (split[i], "*") == 0)
matcher->all = TRUE;
else
{
SubMatcher s;
colon = strstr (split[i], "::");
if (colon != NULL &&
!(colon[2] == 0 ||
(colon[2] == '*' &&
colon[3] == 0)))
{
s.id = lookup_attribute (split[i]);
s.mask = 0xffffffff;
}
else
{
if (colon)
*colon = 0;
s.id = lookup_namespace (split[i]) << NS_POS;
s.mask = NS_MASK << NS_POS;
}
g_array_append_val (matcher->sub_matchers, s);
}
}
g_strfreev (split);
matcher = matcher_optimize (matcher);
return matcher;
}
/**
* g_file_attribute_matcher_subtract:
* @matcher: Matcher to subtract from
* @subtract: The matcher to subtract
*
* Subtracts all attributes of @subtract from @matcher and returns
* a matcher that supports those attributes.
*
* Note that currently it is not possible to remove a single
* attribute when the @matcher matches the whole namespace - or remove
* a namespace or attribute when the matcher matches everything. This
* is a limitation of the current implementation, but may be fixed
* in the future.
*
* Returns: A file attribute matcher matching all attributes of
* @matcher that are not matched by @subtract
**/
GFileAttributeMatcher *
g_file_attribute_matcher_subtract (GFileAttributeMatcher *matcher,
GFileAttributeMatcher *subtract)
{
GFileAttributeMatcher *result;
guint mi, si;
SubMatcher *msub, *ssub;
if (matcher == NULL)
return NULL;
if (subtract == NULL)
return g_file_attribute_matcher_ref (matcher);
if (subtract->all)
return NULL;
if (matcher->all)
return g_file_attribute_matcher_ref (matcher);
result = g_malloc0 (sizeof (GFileAttributeMatcher));
result->ref = 1;
result->sub_matchers = g_array_new (FALSE, FALSE, sizeof (SubMatcher));
si = 0;
g_assert (subtract->sub_matchers->len > 0);
ssub = &g_array_index (subtract->sub_matchers, SubMatcher, si);
for (mi = 0; mi < matcher->sub_matchers->len; mi++)
{
msub = &g_array_index (matcher->sub_matchers, SubMatcher, mi);
retry:
if (sub_matcher_matches (ssub, msub))
continue;
si++;
if (si >= subtract->sub_matchers->len)
break;
ssub = &g_array_index (subtract->sub_matchers, SubMatcher, si);
if (ssub->id <= msub->id)
goto retry;
g_array_append_val (result->sub_matchers, *msub);
}
if (mi < matcher->sub_matchers->len)
g_array_append_vals (result->sub_matchers,
&g_array_index (matcher->sub_matchers, SubMatcher, mi),
matcher->sub_matchers->len - mi);
result = matcher_optimize (result);
return result;
}
/**
* g_file_attribute_matcher_ref:
* @matcher: a #GFileAttributeMatcher.
*
* References a file attribute matcher.
*
* Returns: a #GFileAttributeMatcher.
**/
GFileAttributeMatcher *
g_file_attribute_matcher_ref (GFileAttributeMatcher *matcher)
{
if (matcher)
{
g_return_val_if_fail (matcher->ref > 0, NULL);
g_atomic_int_inc (&matcher->ref);
}
return matcher;
}
/**
* g_file_attribute_matcher_unref:
* @matcher: a #GFileAttributeMatcher.
*
* Unreferences @matcher. If the reference count falls below 1,
* the @matcher is automatically freed.
*
**/
void
g_file_attribute_matcher_unref (GFileAttributeMatcher *matcher)
{
if (matcher)
{
g_return_if_fail (matcher->ref > 0);
if (g_atomic_int_dec_and_test (&matcher->ref))
{
if (matcher->sub_matchers)
g_array_free (matcher->sub_matchers, TRUE);
g_free (matcher);
}
}
}
/**
* g_file_attribute_matcher_matches_only:
* @matcher: a #GFileAttributeMatcher.
* @attribute: a file attribute key.
*
* Checks if a attribute matcher only matches a given attribute. Always
* returns %FALSE if "*" was used when creating the matcher.
*
* Returns: %TRUE if the matcher only matches @attribute. %FALSE otherwise.
**/
gboolean
g_file_attribute_matcher_matches_only (GFileAttributeMatcher *matcher,
const char *attribute)
{
SubMatcher *sub_matcher;
guint32 id;
g_return_val_if_fail (attribute != NULL && *attribute != '\0', FALSE);
if (matcher == NULL ||
matcher->all)
return FALSE;
if (matcher->sub_matchers->len != 1)
return FALSE;
id = lookup_attribute (attribute);
sub_matcher = &g_array_index (matcher->sub_matchers, SubMatcher, 0);
return sub_matcher->id == id &&
sub_matcher->mask == 0xffffffff;
}
static gboolean
matcher_matches_id (GFileAttributeMatcher *matcher,
guint32 id)
{
SubMatcher *sub_matchers;
int i;
if (matcher->sub_matchers)
{
sub_matchers = (SubMatcher *)matcher->sub_matchers->data;
for (i = 0; i < matcher->sub_matchers->len; i++)
{
if (sub_matchers[i].id == (id & sub_matchers[i].mask))
return TRUE;
}
}
return FALSE;
}
gboolean
_g_file_attribute_matcher_matches_id (GFileAttributeMatcher *matcher,
guint32 id)
{
/* We return a NULL matcher for an empty match string, so handle this */
if (matcher == NULL)
return FALSE;
if (matcher->all)
return TRUE;
return matcher_matches_id (matcher, id);
}
/**
* g_file_attribute_matcher_matches:
* @matcher: a #GFileAttributeMatcher.
* @attribute: a file attribute key.
*
* Checks if an attribute will be matched by an attribute matcher. If
* the matcher was created with the "*" matching string, this function
* will always return %TRUE.
*
* Returns: %TRUE if @attribute matches @matcher. %FALSE otherwise.
**/
gboolean
g_file_attribute_matcher_matches (GFileAttributeMatcher *matcher,
const char *attribute)
{
g_return_val_if_fail (attribute != NULL && *attribute != '\0', FALSE);
/* We return a NULL matcher for an empty match string, so handle this */
if (matcher == NULL)
return FALSE;
if (matcher->all)
return TRUE;
return matcher_matches_id (matcher, lookup_attribute (attribute));
}
/* return TRUE -> all */
/**
* g_file_attribute_matcher_enumerate_namespace:
* @matcher: a #GFileAttributeMatcher.
* @ns: a string containing a file attribute namespace.
*
* Checks if the matcher will match all of the keys in a given namespace.
* This will always return %TRUE if a wildcard character is in use (e.g. if
* matcher was created with "standard::*" and @ns is "standard", or if matcher was created
* using "*" and namespace is anything.)
*
* TODO: this is awkwardly worded.
*
* Returns: %TRUE if the matcher matches all of the entries
* in the given @ns, %FALSE otherwise.
**/
gboolean
g_file_attribute_matcher_enumerate_namespace (GFileAttributeMatcher *matcher,
const char *ns)
{
SubMatcher *sub_matchers;
int ns_id;
int i;
g_return_val_if_fail (ns != NULL && *ns != '\0', FALSE);
/* We return a NULL matcher for an empty match string, so handle this */
if (matcher == NULL)
return FALSE;
if (matcher->all)
return TRUE;
ns_id = lookup_namespace (ns) << NS_POS;
if (matcher->sub_matchers)
{
sub_matchers = (SubMatcher *)matcher->sub_matchers->data;
for (i = 0; i < matcher->sub_matchers->len; i++)
{
if (sub_matchers[i].id == ns_id)
return TRUE;
}
}
matcher->iterator_ns = ns_id;
matcher->iterator_pos = 0;
return FALSE;
}
/**
* g_file_attribute_matcher_enumerate_next:
* @matcher: a #GFileAttributeMatcher.
*
* Gets the next matched attribute from a #GFileAttributeMatcher.
*
* Returns: a string containing the next attribute or %NULL if
* no more attribute exist.
**/
const char *
g_file_attribute_matcher_enumerate_next (GFileAttributeMatcher *matcher)
{
int i;
SubMatcher *sub_matcher;
/* We return a NULL matcher for an empty match string, so handle this */
if (matcher == NULL)
return NULL;
while (1)
{
i = matcher->iterator_pos++;
if (matcher->sub_matchers == NULL)
return NULL;
if (i < matcher->sub_matchers->len)
sub_matcher = &g_array_index (matcher->sub_matchers, SubMatcher, i);
else
return NULL;
if (sub_matcher->mask == 0xffffffff &&
(sub_matcher->id & (NS_MASK << NS_POS)) == matcher->iterator_ns)
return get_attribute_for_id (sub_matcher->id);
}
}
/**
* g_file_attribute_matcher_to_string:
* @matcher: (allow-none): a #GFileAttributeMatcher.
*
* Prints what the matcher is matching against. The format will be
* equal to the format passed to g_file_attribute_matcher_new().
* The output however, might not be identical, as the matcher may
* decide to use a different order or omit needless parts.
*
* Returns: a string describing the attributes the matcher matches
* against or %NULL if @matcher was %NULL.
*
* Since: 2.32
**/
char *
g_file_attribute_matcher_to_string (GFileAttributeMatcher *matcher)
{
GString *string;
guint i;
if (matcher == NULL)
return NULL;
if (matcher->all)
return g_strdup ("*");
string = g_string_new ("");
for (i = 0; i < matcher->sub_matchers->len; i++)
{
SubMatcher *submatcher = &g_array_index (matcher->sub_matchers, SubMatcher, i);
if (i > 0)
g_string_append_c (string, ',');
g_string_append (string, get_attribute_for_id (submatcher->id));
}
return g_string_free (string, FALSE);
}
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