feat log add color

src/ulib/log/level.h

@@ -42,6 +42,28 @@ public:
         FATAL = ULOG_LEVEL_FATAL
     };
 
+    static const char *GetConsoleColorPrefix(int level)
+    {
+        switch (level) {
+        case kTrace:
+            return "\033[0;37m";
+        case kDebug:
+            return "\033[0;36m";
+        case kInfo:
+            return "\033[0;32m";
+        case kWarn:
+            return "\033[0;33m";
+        case kError:
+            return "\033[0;31m";
+        case kFatal:
+            return "\033[0;31m";
+        default:
+            return "\033[0m";
+        }
+    }
+
+    static const char *GetConsoleColorSuffix(int level) { return "\033[0m"; }
+
     static const char *ToShortString(int level)
     {
         switch (level) {

src/ulib/log/logger.cpp

@@ -62,7 +62,8 @@ Logger::Log(int32_t level,
     /**
     * @brief time level_name tag file:line@func msg
       */
-    std::string pattern = "{} {} {} {}:{}@{}: {}";
+    std::string pattern = std::string() + Level::GetConsoleColorPrefix(level)
+        + "{} {} {} {}:{}@{}: {}" + Level::GetConsoleColorSuffix(level);
     std::string log_time;
     {
         std::time_t now = time(NULL);