From 5bca89b9a3258487d1252d409177b920cc1b5d5f Mon Sep 17 00:00:00 2001
From: ju5t4fun <ihupeng@126.com>
Date: Wed, 26 Oct 2016 16:04:11 +0800
Subject: [PATCH] add log text color

Signed-off-by: ju5t4fun <ihupeng@126.com>
---
 easylogger/inc/color.h | 45 ++++++++++++++++++++++++++++++++++++++++++
 easylogger/src/elog.c  | 31 +++++++++++++++++++++++++++++
 2 files changed, 76 insertions(+)
 create mode 100644 easylogger/inc/color.h

diff --git a/easylogger/inc/color.h b/easylogger/inc/color.h
new file mode 100644
index 0000000..569e5f2
--- /dev/null
+++ b/easylogger/inc/color.h
@@ -0,0 +1,45 @@
+#ifndef __COLORS_H__
+#define __COLORS_H__
+
+/* use Escape Sequence control the text color
+ * details please reference http://www.cnblogs.com/clover-toeic/p/4031618.html
+ */
+
+#define ESC_START       "\e["
+#define ESC_END         "\e[0m"
+
+//front color
+#define F_BLACK   "30;"
+#define F_RED     "31;"
+#define F_GREEN   "32;"
+#define F_YELLOW  "33;"
+#define F_BLUE    "34;"
+#define F_MAGENTA "35;"
+#define F_CYAN    "36;"
+#define F_WHITE   "37;"
+
+//background color
+#define B_BLACK   "40;"
+#define B_RED     "41;"
+#define B_GREEN   "42;"
+#define B_YELLOW  "43;"
+#define B_BLUE    "44;"
+#define B_MAGENTA "45;"
+#define B_CYAN    "46;"
+#define B_WHITE   "47;"
+
+//show style
+#define NORMAL    "0m"
+#define BOLD      "1m"
+#define BLINK     "5m"
+#define NO_BOLD   "22m"
+
+//[front color] + [background color] + [show style]
+#define COLOR_ASSERT    F_MAGENTA B_BLACK NO_BOLD
+#define COLOR_ERROR     F_RED B_BLACK NO_BOLD
+#define COLOR_WARN      F_YELLOW B_BLACK NO_BOLD
+#define COLOR_INFO      F_BLUE B_BLACK NO_BOLD
+#define COLOR_DEBUG     F_GREEN B_BLACK NO_BOLD
+#define COLOR_VERBOSE   F_WHITE B_BLACK NO_BOLD
+
+#endif
diff --git a/easylogger/src/elog.c b/easylogger/src/elog.c
index dccdf98..517edc4 100644
--- a/easylogger/src/elog.c
+++ b/easylogger/src/elog.c
@@ -26,6 +26,7 @@
  * Created on: 2015-04-28
  */
 
+#include "color.h"
 #include <elog.h>
 #include <string.h>
 #include <stdarg.h>
@@ -240,6 +241,33 @@ void elog_output(uint8_t level, const char *tag, const char *file, const char *f
 
     /* lock output */
     output_lock();
+	/* add Escape Sequence start sign and color info*/
+    log_len += elog_strcpy(log_len, log_buf + log_len, ESC_START);
+    char *color = NULL;
+    switch(level)
+    {
+        case ELOG_LVL_ASSERT:
+            color = (char*) COLOR_ASSERT;
+            break;
+        case ELOG_LVL_ERROR:
+            color = (char*) COLOR_ERROR;
+            break;
+        case ELOG_LVL_WARN:
+            color = (char*) COLOR_WARN;
+            break;
+        case ELOG_LVL_INFO:
+            color = (char*) COLOR_INFO;
+            break;
+        case ELOG_LVL_DEBUG:
+            color = (char*) COLOR_DEBUG;
+            break;
+        case ELOG_LVL_VERBOSE:
+            color = (char*) COLOR_VERBOSE;
+            break;
+        default:
+            ;
+    }
+    log_len += elog_strcpy(log_len, log_buf + log_len, color);
     /* package level info */
     if (get_fmt_enabled(level, ELOG_FMT_LVL)) {
         log_len += elog_strcpy(log_len, log_buf + log_len, level_output_info[level]);
@@ -334,6 +362,9 @@ void elog_output(uint8_t level, const char *tag, const char *file, const char *f
         strcpy(log_buf + ELOG_BUF_SIZE - newline_len, ELOG_NEWLINE_SIGN);
     }
 
+    /* add Escape Sequence end sign */
+    log_len += elog_strcpy(log_len, log_buf + log_len, ESC_END);
+	
     /* output log */
     elog_port_output(log_buf, log_len);