+ * g_output_stream_printf:
+ * @stream: a #GOutputStream.
+ * @bytes_written: (out): location to store the number of bytes that was
+ * written to the stream
+ * @cancellable: (allow-none): optional #GCancellable object, %NULL to ignore.
+ * @error: location to store the error occurring, or %NULL to ignore
+ * @format: the format string. See the printf() documentation
+ * @...: the parameters to insert into the format string
+ *
+ * This is a utility function around g_output_stream_write_all(). It
+ * uses g_strdup_vprintf() to turn @format and @... into a string that
+ * is then written to @stream.
+ *
+ * See the documentation of g_output_stream_write_all() about the
+ * behavior of the actual write operation.
+ *
+ * Note that partial writes cannot be properly checked with this
+ * function due to the variable length of the written string, if you
+ * need precise control over partial write failures, you need to
+ * create you own printf()-like wrapper around g_output_stream_write()
+ * or g_output_stream_write_all().
+ *
+ * Since: 2.40
+ *
+ * Returns: %TRUE on success, %FALSE if there was an error
+ **/
+gboolean
+g_output_stream_printf (GOutputStream *stream,
+ gsize *bytes_written,
+ GCancellable *cancellable,
+ GError **error,
+ const gchar *format,
+ ...)
+{
+ va_list args;
+ gboolean success;
+
+ va_start (args, format);
+ success = g_output_stream_vprintf (stream, bytes_written, cancellable,
+ error, format, args);
+ va_end (args);
+
+ return success;
+}
+
+/**
+ * g_output_stream_vprintf:
+ * @stream: a #GOutputStream.
+ * @bytes_written: (out): location to store the number of bytes that was
+ * written to the stream
+ * @cancellable: (allow-none): optional #GCancellable object, %NULL to ignore.
+ * @error: location to store the error occurring, or %NULL to ignore
+ * @format: the format string. See the printf() documentation
+ * @args: the parameters to insert into the format string
+ *
+ * This is a utility function around g_output_stream_write_all(). It
+ * uses g_strdup_vprintf() to turn @format and @args into a string that
+ * is then written to @stream.
+ *
+ * See the documentation of g_output_stream_write_all() about the
+ * behavior of the actual write operation.
+ *
+ * Note that partial writes cannot be properly checked with this
+ * function due to the variable length of the written string, if you
+ * need precise control over partial write failures, you need to
+ * create you own printf()-like wrapper around g_output_stream_write()
+ * or g_output_stream_write_all().
+ *
+ * Since: 2.40
+ *
+ * Returns: %TRUE on success, %FALSE if there was an error
+ **/
+gboolean
+g_output_stream_vprintf (GOutputStream *stream,
+ gsize *bytes_written,
+ GCancellable *cancellable,
+ GError **error,
+ const gchar *format,
+ va_list args)
+{
+ gchar *text;
+ gboolean success;
+
+ g_return_val_if_fail (G_IS_OUTPUT_STREAM (stream), FALSE);
+ g_return_val_if_fail (cancellable == NULL || G_IS_CANCELLABLE (stream), FALSE);
+ g_return_val_if_fail (error == NULL || *error == NULL, FALSE);
+ g_return_val_if_fail (format != NULL, FALSE);
+
+ text = g_strdup_vprintf (format, args);
+ success = g_output_stream_write_all (stream,
+ text, strlen (text),
+ bytes_written, cancellable, error);
+ g_free (text);
+
+ return success;
+}
+
+/**
+ * g_output_stream_write_bytes:
+ * @stream: a #GOutputStream.
+ * @bytes: the #GBytes to write
+ * @cancellable: (allow-none): optional cancellable object
+ * @error: location to store the error occurring, or %NULL to ignore
+ *
+ * A wrapper function for g_output_stream_write() which takes a
+ * #GBytes as input. This can be more convenient for use by language
+ * bindings or in other cases where the refcounted nature of #GBytes
+ * is helpful over a bare pointer interface.
+ *
+ * However, note that this function may still perform partial writes,
+ * just like g_output_stream_write(). If that occurs, to continue
+ * writing, you will need to create a new #GBytes containing just the
+ * remaining bytes, using g_bytes_new_from_bytes(). Passing the same
+ * #GBytes instance multiple times potentially can result in duplicated
+ * data in the output stream.
+ *
+ * Returns: Number of bytes written, or -1 on error
+ **/
+gssize
+g_output_stream_write_bytes (GOutputStream *stream,
+ GBytes *bytes,
+ GCancellable *cancellable,
+ GError **error)
+{
+ gsize size;
+ gconstpointer data;
+
+ data = g_bytes_get_data (bytes, &size);
+
+ return g_output_stream_write (stream,
+ data, size,
+ cancellable,
+ error);
+}
+
+/**