From fc7ae83f91cc99b24143880293ca757f4024a62d Mon Sep 17 00:00:00 2001
From: Marcel Holtmann <marcel@holtmann.org>
Date: Tue, 18 Dec 2012 04:17:45 +0100
Subject: [PATCH] client: Add helper function for readline async printing

---
 Makefile.tools   |  4 ++--
 client/display.c | 57 ++++++++++++++++++++++++++++++++++++++++++++++++
 client/display.h |  2 ++
 3 files changed, 61 insertions(+), 2 deletions(-)
 create mode 100644 client/display.c

diff --git a/Makefile.tools b/Makefile.tools
index 720a2c1bd..0d782a6b5 100644
--- a/Makefile.tools
+++ b/Makefile.tools
@@ -2,8 +2,8 @@
 if CLIENT
 bin_PROGRAMS += client/bluetoothctl
 
-client_bluetoothctl_SOURCES = $(gdbus_sources) \
-					client/main.c client/display.h \
+client_bluetoothctl_SOURCES = $(gdbus_sources) client/main.c \
+					client/display.h client/display.c \
 					client/agent.h client/agent.c
 client_bluetoothctl_LDADD = @GLIB_LIBS@ @DBUS_LIBS@ -lreadline
 endif
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);
+}
diff --git a/client/display.h b/client/display.h
index 7abefa45c..ae43d0fc1 100644
--- a/client/display.h
+++ b/client/display.h
@@ -34,3 +34,5 @@ static inline void end_message(void)
 {
 	rl_clear_message();
 }
+
+void rl_printf(const char *fmt, ...) __attribute__((format(printf, 1, 2)));
-- 
2.47.3