* 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, write to the
- * Free Software Foundation, Inc., 59 Temple Place, Suite 330,
- * Boston, MA 02111-1307, USA.
+ * Public License along with this library; if not, see <http://www.gnu.org/licenses/>.
*
* Author: Alexander Larsson <alexl@redhat.com>
*/
-#include <config.h>
+#include "config.h"
#include <string.h>
#include "gdataoutputstream.h"
+#include "gseekable.h"
+#include "gioenumtypes.h"
+#include "gioerror.h"
#include "glibintl.h"
+
/**
* SECTION:gdataoutputstream
- * @short_description: Data Output Stream.
- * @see_also: #GOutputStream.
+ * @short_description: Data Output Stream
+ * @include: gio/gio.h
+ * @see_also: #GOutputStream
*
* Data output stream implements #GOutputStream and includes functions for
* writing data directly to an output stream.
};
enum {
- PROP_0
+ PROP_0,
+ PROP_BYTE_ORDER
};
static void g_data_output_stream_set_property (GObject *object,
GValue *value,
GParamSpec *pspec);
-G_DEFINE_TYPE (GDataOutputStream,
- g_data_output_stream,
- G_TYPE_FILTER_OUTPUT_STREAM)
+static void g_data_output_stream_seekable_iface_init (GSeekableIface *iface);
+static goffset g_data_output_stream_tell (GSeekable *seekable);
+static gboolean g_data_output_stream_can_seek (GSeekable *seekable);
+static gboolean g_data_output_stream_seek (GSeekable *seekable,
+ goffset offset,
+ GSeekType type,
+ GCancellable *cancellable,
+ GError **error);
+static gboolean g_data_output_stream_can_truncate (GSeekable *seekable);
+static gboolean g_data_output_stream_truncate (GSeekable *seekable,
+ goffset offset,
+ GCancellable *cancellable,
+ GError **error);
+
+G_DEFINE_TYPE_WITH_CODE (GDataOutputStream,
+ g_data_output_stream,
+ G_TYPE_FILTER_OUTPUT_STREAM,
+ G_ADD_PRIVATE (GDataOutputStream)
+ G_IMPLEMENT_INTERFACE (G_TYPE_SEEKABLE,
+ g_data_output_stream_seekable_iface_init))
static void
{
GObjectClass *object_class;
- g_type_class_add_private (klass, sizeof (GDataOutputStreamPrivate));
-
object_class = G_OBJECT_CLASS (klass);
object_class->get_property = g_data_output_stream_get_property;
object_class->set_property = g_data_output_stream_set_property;
+
+ /**
+ * GDataOutputStream:byte-order:
+ *
+ * Determines the byte ordering that is used when writing
+ * multi-byte entities (such as integers) to the stream.
+ */
+ g_object_class_install_property (object_class,
+ PROP_BYTE_ORDER,
+ g_param_spec_enum ("byte-order",
+ P_("Byte order"),
+ P_("The byte order"),
+ G_TYPE_DATA_STREAM_BYTE_ORDER,
+ G_DATA_STREAM_BYTE_ORDER_BIG_ENDIAN,
+ G_PARAM_READWRITE|G_PARAM_STATIC_NAME|G_PARAM_STATIC_BLURB));
+
}
static void
-g_data_output_stream_set_property (GObject *object,
- guint prop_id,
- const GValue *value,
- GParamSpec *pspec)
+g_data_output_stream_set_property (GObject *object,
+ guint prop_id,
+ const GValue *value,
+ GParamSpec *pspec)
{
- GDataOutputStreamPrivate *priv;
- GDataOutputStream *dstream;
+ GDataOutputStream *dstream;
dstream = G_DATA_OUTPUT_STREAM (object);
- priv = dstream->priv;
switch (prop_id)
{
+ case PROP_BYTE_ORDER:
+ g_data_output_stream_set_byte_order (dstream, g_value_get_enum (value));
+ break;
default:
G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
break;
}
-
}
static void
priv = dstream->priv;
switch (prop_id)
- {
-
+ {
+ case PROP_BYTE_ORDER:
+ g_value_set_enum (value, priv->byte_order);
+ break;
+
default:
G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
break;
}
-
}
+
static void
g_data_output_stream_init (GDataOutputStream *stream)
{
- stream->priv = G_TYPE_INSTANCE_GET_PRIVATE (stream,
- G_TYPE_DATA_OUTPUT_STREAM,
- GDataOutputStreamPrivate);
-
+ stream->priv = g_data_output_stream_get_instance_private (stream);
stream->priv->byte_order = G_DATA_STREAM_BYTE_ORDER_BIG_ENDIAN;
}
+static void
+g_data_output_stream_seekable_iface_init (GSeekableIface *iface)
+{
+ iface->tell = g_data_output_stream_tell;
+ iface->can_seek = g_data_output_stream_can_seek;
+ iface->seek = g_data_output_stream_seek;
+ iface->can_truncate = g_data_output_stream_can_truncate;
+ iface->truncate_fn = g_data_output_stream_truncate;
+}
+
/**
* g_data_output_stream_new:
* @base_stream: a #GOutputStream.
* @order: a %GDataStreamByteOrder.
*
* Sets the byte order of the data output stream to @order.
- *
**/
void
-g_data_output_stream_set_byte_order (GDataOutputStream *stream,
- GDataStreamByteOrder order)
+g_data_output_stream_set_byte_order (GDataOutputStream *stream,
+ GDataStreamByteOrder order)
{
+ GDataOutputStreamPrivate *priv;
g_return_if_fail (G_IS_DATA_OUTPUT_STREAM (stream));
-
- stream->priv->byte_order = order;
+ priv = stream->priv;
+ if (priv->byte_order != order)
+ {
+ priv->byte_order = order;
+ g_object_notify (G_OBJECT (stream), "byte-order");
+ }
}
/**
/**
* g_data_output_stream_put_byte:
- * @data_stream: a #GDataOutputStream.
+ * @stream: a #GDataOutputStream.
* @data: a #guchar.
- * @cancellable: optional #GCancellable object, %NULL to ignore.
+ * @cancellable: (allow-none): optional #GCancellable object, %NULL to ignore.
* @error: a #GError, %NULL to ignore.
*
* Puts a byte into the output stream.
* Returns: %TRUE if @data was successfully added to the @stream.
**/
gboolean
-g_data_output_stream_put_byte (GDataOutputStream *data_stream,
- guchar data,
- GCancellable *cancellable,
- GError **error)
+g_data_output_stream_put_byte (GDataOutputStream *stream,
+ guchar data,
+ GCancellable *cancellable,
+ GError **error)
{
gsize bytes_written;
- g_return_val_if_fail (G_IS_DATA_OUTPUT_STREAM (data_stream), FALSE);
+ g_return_val_if_fail (G_IS_DATA_OUTPUT_STREAM (stream), FALSE);
- return g_output_stream_write_all (G_OUTPUT_STREAM (data_stream),
+ return g_output_stream_write_all (G_OUTPUT_STREAM (stream),
&data, 1,
&bytes_written,
cancellable, error);
* g_data_output_stream_put_int16:
* @stream: a #GDataOutputStream.
* @data: a #gint16.
- * @cancellable: optional #GCancellable object, %NULL to ignore.
+ * @cancellable: (allow-none): optional #GCancellable object, %NULL to ignore.
* @error: a #GError, %NULL to ignore.
*
* Puts a signed 16-bit integer into the output stream.
* Returns: %TRUE if @data was successfully added to the @stream.
**/
gboolean
-g_data_output_stream_put_int16 (GDataOutputStream *stream,
- gint16 data,
- GCancellable *cancellable,
- GError **error)
+g_data_output_stream_put_int16 (GDataOutputStream *stream,
+ gint16 data,
+ GCancellable *cancellable,
+ GError **error)
{
gsize bytes_written;
* g_data_output_stream_put_uint16:
* @stream: a #GDataOutputStream.
* @data: a #guint16.
- * @cancellable: optional #GCancellable object, %NULL to ignore.
+ * @cancellable: (allow-none): optional #GCancellable object, %NULL to ignore.
* @error: a #GError, %NULL to ignore.
*
* Puts an unsigned 16-bit integer into the output stream.
* Returns: %TRUE if @data was successfully added to the @stream.
**/
gboolean
-g_data_output_stream_put_uint16 (GDataOutputStream *stream,
- guint16 data,
- GCancellable *cancellable,
- GError **error)
+g_data_output_stream_put_uint16 (GDataOutputStream *stream,
+ guint16 data,
+ GCancellable *cancellable,
+ GError **error)
{
gsize bytes_written;
* g_data_output_stream_put_int32:
* @stream: a #GDataOutputStream.
* @data: a #gint32.
- * @cancellable: optional #GCancellable object, %NULL to ignore.
+ * @cancellable: (allow-none): optional #GCancellable object, %NULL to ignore.
* @error: a #GError, %NULL to ignore.
*
* Puts a signed 32-bit integer into the output stream.
* Returns: %TRUE if @data was successfully added to the @stream.
**/
gboolean
-g_data_output_stream_put_int32 (GDataOutputStream *stream,
- gint32 data,
- GCancellable *cancellable,
- GError **error)
+g_data_output_stream_put_int32 (GDataOutputStream *stream,
+ gint32 data,
+ GCancellable *cancellable,
+ GError **error)
{
gsize bytes_written;
* g_data_output_stream_put_uint32:
* @stream: a #GDataOutputStream.
* @data: a #guint32.
- * @cancellable: optional #GCancellable object, %NULL to ignore.
+ * @cancellable: (allow-none): optional #GCancellable object, %NULL to ignore.
* @error: a #GError, %NULL to ignore.
*
* Puts an unsigned 32-bit integer into the stream.
* Returns: %TRUE if @data was successfully added to the @stream.
**/
gboolean
-g_data_output_stream_put_uint32 (GDataOutputStream *stream,
- guint32 data,
- GCancellable *cancellable,
- GError **error)
+g_data_output_stream_put_uint32 (GDataOutputStream *stream,
+ guint32 data,
+ GCancellable *cancellable,
+ GError **error)
{
gsize bytes_written;
* g_data_output_stream_put_int64:
* @stream: a #GDataOutputStream.
* @data: a #gint64.
- * @cancellable: optional #GCancellable object, %NULL to ignore.
+ * @cancellable: (allow-none): optional #GCancellable object, %NULL to ignore.
* @error: a #GError, %NULL to ignore.
*
* Puts a signed 64-bit integer into the stream.
* Returns: %TRUE if @data was successfully added to the @stream.
**/
gboolean
-g_data_output_stream_put_int64 (GDataOutputStream *stream,
- gint64 data,
- GCancellable *cancellable,
- GError **error)
+g_data_output_stream_put_int64 (GDataOutputStream *stream,
+ gint64 data,
+ GCancellable *cancellable,
+ GError **error)
{
gsize bytes_written;
* g_data_output_stream_put_uint64:
* @stream: a #GDataOutputStream.
* @data: a #guint64.
- * @cancellable: optional #GCancellable object, %NULL to ignore.
+ * @cancellable: (allow-none): optional #GCancellable object, %NULL to ignore.
* @error: a #GError, %NULL to ignore.
*
* Puts an unsigned 64-bit integer into the stream.
* Returns: %TRUE if @data was successfully added to the @stream.
**/
gboolean
-g_data_output_stream_put_uint64 (GDataOutputStream *stream,
- guint64 data,
- GCancellable *cancellable,
- GError **error)
+g_data_output_stream_put_uint64 (GDataOutputStream *stream,
+ guint64 data,
+ GCancellable *cancellable,
+ GError **error)
{
gsize bytes_written;
* g_data_output_stream_put_string:
* @stream: a #GDataOutputStream.
* @str: a string.
- * @cancellable: optional #GCancellable object, %NULL to ignore.
+ * @cancellable: (allow-none): optional #GCancellable object, %NULL to ignore.
* @error: a #GError, %NULL to ignore.
*
* Puts a string into the output stream.
* Returns: %TRUE if @string was successfully added to the @stream.
**/
gboolean
-g_data_output_stream_put_string (GDataOutputStream *stream,
- const char *str,
- GCancellable *cancellable,
- GError **error)
+g_data_output_stream_put_string (GDataOutputStream *stream,
+ const char *str,
+ GCancellable *cancellable,
+ GError **error)
{
gsize bytes_written;
str, strlen (str),
&bytes_written,
cancellable, error);
-}
+}
+
+static goffset
+g_data_output_stream_tell (GSeekable *seekable)
+{
+ GOutputStream *base_stream;
+ GSeekable *base_stream_seekable;
+
+ base_stream = G_FILTER_OUTPUT_STREAM (seekable)->base_stream;
+ if (!G_IS_SEEKABLE (base_stream))
+ return 0;
+ base_stream_seekable = G_SEEKABLE (base_stream);
+ return g_seekable_tell (base_stream_seekable);
+}
+
+static gboolean
+g_data_output_stream_can_seek (GSeekable *seekable)
+{
+ GOutputStream *base_stream;
+
+ base_stream = G_FILTER_OUTPUT_STREAM (seekable)->base_stream;
+ return G_IS_SEEKABLE (base_stream) && g_seekable_can_seek (G_SEEKABLE (base_stream));
+}
+
+static gboolean
+g_data_output_stream_seek (GSeekable *seekable,
+ goffset offset,
+ GSeekType type,
+ GCancellable *cancellable,
+ GError **error)
+{
+ GOutputStream *base_stream;
+ GSeekable *base_stream_seekable;
+
+ base_stream = G_FILTER_OUTPUT_STREAM (seekable)->base_stream;
+ if (!G_IS_SEEKABLE (base_stream))
+ {
+ g_set_error_literal (error, G_IO_ERROR, G_IO_ERROR_NOT_SUPPORTED,
+ _("Seek not supported on base stream"));
+ return FALSE;
+ }
+
+ base_stream_seekable = G_SEEKABLE (base_stream);
+ return g_seekable_seek (base_stream_seekable, offset, type, cancellable, error);
+}
+
+static gboolean
+g_data_output_stream_can_truncate (GSeekable *seekable)
+{
+ GOutputStream *base_stream;
+
+ base_stream = G_FILTER_OUTPUT_STREAM (seekable)->base_stream;
+ return G_IS_SEEKABLE (base_stream) && g_seekable_can_truncate (G_SEEKABLE (base_stream));
+}
+
+static gboolean
+g_data_output_stream_truncate (GSeekable *seekable,
+ goffset offset,
+ GCancellable *cancellable,
+ GError **error)
+{
+ GOutputStream *base_stream;
+ GSeekable *base_stream_seekable;
+
+ base_stream = G_FILTER_OUTPUT_STREAM (seekable)->base_stream;
+ if (!G_IS_SEEKABLE (base_stream))
+ {
+ g_set_error_literal (error, G_IO_ERROR, G_IO_ERROR_NOT_SUPPORTED,
+ _("Truncate not supported on base stream"));
+ return FALSE;
+ }
+
+ base_stream_seekable = G_SEEKABLE (base_stream);
+ return g_seekable_truncate (base_stream_seekable, offset, cancellable, error);
+}
projects / platform / upstream / glib.git / blobdiff