client: Add helper function for readline async printing

1 files changed, 57 insertions, 0 deletions

diff --git a/client/display.c b/client/display.c
new file mode 100644
index 000000000..197049d64
--- /dev/null
+++ b/client/display.c
@@ -0,0 +1,57 @@
+/*
+ *
+ *  BlueZ - Bluetooth protocol stack for Linux
+ *
+ *  Copyright (C) 2012  Intel Corporation. All rights reserved.
+ *
+ *
+ *  This program is free software; you can redistribute it and/or modify
+ *  it under the terms of the GNU General Public License as published by
+ *  the Free Software Foundation; either version 2 of the License, or
+ *  (at your option) any later version.
+ *
+ *  This program 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 General Public License for more details.
+ *
+ *  You should have received a copy of the GNU General Public License
+ *  along with this program; if not, write to the Free Software
+ *  Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA  02110-1301  USA
+ *
+ */
+
+#ifdef HAVE_CONFIG_H
+#include <config.h>
+#endif
+
+#include <stdio.h>
+#include <stdlib.h>
+#include <stdarg.h>
+#include <stdbool.h>
+#include <readline/readline.h>
+
+#include "display.h"
+
+void rl_printf(const char *fmt, ...)
+{
+	va_list args;
+	char *saved_line;
+	int saved_point;
+
+	saved_point = rl_point;
+	saved_line = rl_copy_text(0, rl_end);
+	rl_save_prompt();
+	rl_replace_line("", 0);
+	rl_redisplay();
+
+	va_start(args, fmt);
+	vprintf(fmt, args);
+	va_end(args);
+
+	rl_restore_prompt();
+	rl_replace_line(saved_line, 0);
+	rl_point = saved_point;
+	rl_redisplay();
+	free(saved_line);
+}