From 30e0e64407f6a80d682508cd243dde10c1792a6d Mon Sep 17 00:00:00 2001
From: Johan Hedberg <johan.hedberg@intel.com>
Date: Tue, 8 Dec 2015 12:17:31 +0200
Subject: [PATCH] Bluetooth: Add color logging support

Add basic color logging support. Error logs will be printed in red
whereas warn() logs in yellow. The support is behind a Kconfig option
in case someone needs to build the stack for a terminal that doesn't
support the ANSI color codes.

Change-Id: I080e32db68f87e81f1bb54aa4c634f7cd38f1e33
Signed-off-by: Johan Hedberg <johan.hedberg@intel.com>
---
 include/bluetooth/log.h | 16 ++++++++++++++--
 net/bluetooth/Kconfig   |  6 ++++++
 2 files changed, 20 insertions(+), 2 deletions(-)

diff --git a/include/bluetooth/log.h b/include/bluetooth/log.h
index 1c96529eb67..33ecf378fb0 100644
--- a/include/bluetooth/log.h
+++ b/include/bluetooth/log.h
@@ -22,11 +22,23 @@
 
 #include <stdio.h>
 
+#if defined(CONFIG_BLUETOOTH_DEBUG_COLOR)
+#define BT_COLOR_OFF     "\x1B[0m"
+#define BT_COLOR_RED     "\x1B[0;31m"
+#define BT_COLOR_YELLOW  "\x1B[0;33m"
+#else
+#define BT_COLOR_OFF     ""
+#define BT_COLOR_RED     ""
+#define BT_COLOR_YELLOW  ""
+#endif
+
 #if defined(CONFIG_BLUETOOTH_DEBUG)
 #define BT_DBG(fmt, ...) printf("bt: %s (%p): " fmt "\n", __func__, \
 				sys_thread_self_get(), ##__VA_ARGS__)
-#define BT_ERR(fmt, ...) printf("bt: %s: " fmt "\n", __func__, ##__VA_ARGS__)
-#define BT_WARN(fmt, ...) printf("bt: %s: " fmt "\n", __func__, ##__VA_ARGS__)
+#define BT_ERR(fmt, ...) printf("bt: %s: %s" fmt "%s\n", __func__, \
+				BT_COLOR_RED, ##__VA_ARGS__, BT_COLOR_OFF)
+#define BT_WARN(fmt, ...) printf("bt: %s: %s" fmt "%s\n", __func__, \
+				 BT_COLOR_YELLOW, ##__VA_ARGS__, BT_COLOR_OFF)
 #define BT_INFO(fmt, ...) printf("bt: " fmt "\n", ##__VA_ARGS__)
 #define BT_ASSERT(cond) if (!(cond)) { \
 				BT_ERR("bt: assert: '" #cond "' failed"); \
diff --git a/net/bluetooth/Kconfig b/net/bluetooth/Kconfig
index d5ef8100200..42de1a6e361 100644
--- a/net/bluetooth/Kconfig
+++ b/net/bluetooth/Kconfig
@@ -172,6 +172,12 @@ config	BLUETOOTH_DEBUG
 	  serial console.
 
 if BLUETOOTH_DEBUG
+config  BLUETOOTH_DEBUG_COLOR
+	bool "Use colored logs"
+	default y
+	help
+	  Use color in the logs. This requires an ANSI capable terminal.
+
 config	BLUETOOTH_DEBUG_HCI_CORE
 	bool "Bluetooth HCI core debug"
 	default n