add FormatDateTime

a8/sysutils.cc

@@ -153,4 +153,14 @@ namespace a8
         return std::string(buf);
     }
 
+    std::string FormatDateTime(time_t time_val)
+    {
+        struct tm tm_time = {0};
+        localtime_r(&time_val, &tm_time);
+
+        char buff[256];
+        buff[0] = '\0';
+        strftime(buff, a8::ArraySize(buff), "%F %T", &tm_time);
+        return std::string(buff);
+    }
 }

a8/sysutils.h

@@ -63,6 +63,7 @@ namespace a8
     bool MkDir(const std::string& path);
     void ForceCreateDir(const std::string& path);
     std::string GetIpAddress(unsigned long ip_saddr);
+    std::string FormatDateTime(time_t time_val);
 
 }