+/**
+ * g_data_input_stream_read_line_utf8:
+ * @stream: a given #GDataInputStream.
+ * @length: (out): a #gsize to get the length of the data read in.
+ * @cancellable: (allow-none): optional #GCancellable object, %NULL to ignore.
+ * @error: #GError for error reporting.
+ *
+ * Reads a UTF-8 encoded line from the data input stream.
+ *
+ * If @cancellable is not %NULL, then the operation can be cancelled by
+ * triggering the cancellable object from another thread. If the operation
+ * was cancelled, the error %G_IO_ERROR_CANCELLED will be returned.
+ *
+ * Returns: (nullable) (transfer full): a NUL terminated UTF-8 string
+ * with the line that was read in (without the newlines). Set
+ * @length to a #gsize to get the length of the read line. On an
+ * error, it will return %NULL and @error will be set. For UTF-8
+ * conversion errors, the set error domain is %G_CONVERT_ERROR. If
+ * there's no content to read, it will still return %NULL, but @error
+ * won't be set.
+ *
+ * Since: 2.30
+ **/
+char *
+g_data_input_stream_read_line_utf8 (GDataInputStream *stream,
+ gsize *length,
+ GCancellable *cancellable,
+ GError **error)
+{
+ char *res;
+
+ res = g_data_input_stream_read_line (stream, length, cancellable, error);
+ if (!res)
+ return NULL;
+
+ if (!g_utf8_validate (res, -1, NULL))
+ {
+ g_set_error_literal (error, G_CONVERT_ERROR,
+ G_CONVERT_ERROR_ILLEGAL_SEQUENCE,
+ _("Invalid byte sequence in conversion input"));
+ g_free (res);
+ return NULL;
+ }
+ return res;
+}
+