5 files changed, 142 insertions, 3 deletions

diff --git a/src/libjin/audio/sdl/audio.cpp b/src/libjin/audio/sdl/audio.cpp
index 8a0fc86..4e565dc 100644
--- a/src/libjin/audio/sdl/audio.cpp
+++ b/src/libjin/audio/sdl/audio.cpp
@@ -2,6 +2,7 @@
 #include "audio.h"
 #include "source.h"
 #include "../../math/math.h"
+#include "../../utils/log.h"
 
 namespace jin
 {
@@ -20,7 +21,7 @@ namespace audio
 
     onlyonce bool SDLAudio::initSystem(const SettingBase* s)
     {
-        std::cout << "Init Audio System" << std::endl;
+        Loghelper::log(Loglevel::LV_INFO, "Init Audio System");
 
         if (SDL_Init(SDL_INIT_AUDIO) < 0)
             return false;
diff --git a/src/libjin/common/subsystem.h b/src/libjin/common/subsystem.h
index 4f3c5ab..55b0f0d 100644
--- a/src/libjin/common/subsystem.h
+++ b/src/libjin/common/subsystem.h
@@ -16,7 +16,7 @@ namespace jin
 
         void init(const SettingBase* setting)
         {
-            initSystem(setting);
+            CallOnce(initSystem(setting));
         }
 
         void quit()
diff --git a/src/libjin/render/window.cpp b/src/libjin/render/window.cpp
index fe81f58..677618d 100644
--- a/src/libjin/render/window.cpp
+++ b/src/libjin/render/window.cpp
@@ -4,6 +4,8 @@
 #include "3rdparty/GLee/GLee.h"
 #include "canvas.h"
 #include "../utils/utils.h"
+#include "../audio/sdl/audio.h"
+#include "../utils/log.h"
 
 namespace jin
 {
@@ -12,7 +14,7 @@ namespace render
 
     onlyonce bool Window::initSystem(const SettingBase* s)
     {
-        std::cout << "Init window system" << std::endl;
+        Loghelper::log(Loglevel::LV_INFO, "Init window system");
 
         if (SDL_Init(SDL_INIT_VIDEO) < 0)
             return false; 
diff --git a/src/libjin/utils/log.cpp b/src/libjin/utils/log.cpp
new file mode 100644
index 0000000..5299942
--- /dev/null
+++ b/src/libjin/utils/log.cpp
@@ -0,0 +1,2 @@
+#define LOGHELPER_IMPLEMENT
+#include "log.h"
\ No newline at end of file
diff --git a/src/libjin/utils/log.h b/src/libjin/utils/log.h
new file mode 100644
index 0000000..b047402
--- /dev/null
+++ b/src/libjin/utils/log.h
@@ -0,0 +1,134 @@
+/**
+* Single.h/loghelper.h
+* Copyright (C) 2017~2018 chai
+*/
+#ifndef __LOG_HELPER_H
+#define __LOG_HELPER_H
+#include <string> 
+#include <iostream>
+#include <fstream>
+#include <stdarg.h>
+
+class Loghelper
+{
+public:
+    // log���Ŀ��
+    enum Direction
+    {
+        DIR_CERR = 1 << 1, // ��׼������
+        DIR_FILE = 1 << 2, // log�ļ�
+    };
+
+    // ����ȼ�
+    enum Level
+    {
+        LV_NONE = 0,  // none   
+        LV_ERROR = 1 << 1,  // error 
+        LV_WARN = 1 << 2,  // warn 
+        LV_INFO = 1 << 3,  // info 
+        LV_DEBUG = 1 << 4, // debug 
+        LV_ALL = 0xffffffff
+    };
+
+    static void log(Level _level, const char* _fmt, ...);
+
+    // �ض���
+    static void redirect(unsigned int _dir, char* _path = nullptr);
+
+    // ɸѡ����ȼ�
+    static void restrict(unsigned int levels);
+
+    static void close();
+
+private:
+    static unsigned int dir;    // ���Ŀ��
+    static unsigned int levels; // ����ȼ�
+    static std::ofstream fs;    // ����ļ��� 
+};
+
+typedef Loghelper::Level Loglevel;
+
+#ifdef LOGHELPER_IMPLEMENT
+
+#define hasbit(flag, bit) ((flag & bit) == bit)
+
+unsigned int Loghelper::dir = Loghelper::Direction::DIR_CERR;
+unsigned int Loghelper::levels = Loghelper::Level::LV_ALL;
+std::ofstream Loghelper::fs;
+
+void Loghelper::log(Level _level, const char* _fmt, ...)
+{
+    if (!hasbit(levels, _level))
+        return;
+#define FORMAT_MSG_BUFFER_SIZE (204800)  
+    char* levelStr = nullptr;
+    switch (_level)
+    {
+    case LV_ERROR:
+        levelStr = "Error: ";
+        break;
+    case LV_WARN:
+        levelStr = "Warn: ";
+        break;
+    case LV_INFO:
+        levelStr = "Info: ";
+        break;
+    case LV_DEBUG:
+        levelStr = "Debug: ";
+        break;
+    default:
+        levelStr = "Unknown: ";
+        break;
+    }
+    char buffer[FORMAT_MSG_BUFFER_SIZE + 1] = { 0 };
+    strcpy(buffer, levelStr);
+    va_list args;
+    va_start(args, _fmt);
+    vsnprintf(buffer + strlen(buffer), FORMAT_MSG_BUFFER_SIZE, _fmt, args);
+    va_end(args);
+    if (hasbit(dir, DIR_CERR))
+    {
+        std::cerr << buffer << std::endl;
+    }
+    if (hasbit(dir, DIR_FILE))
+    {
+        fs << buffer << std::endl;
+    }
+#undef FORMAT_MSG_BUFFER_SIZE
+}
+
+// �ض���
+void Loghelper::redirect(unsigned int _dir, char* _path)
+{
+    dir = _dir;
+    if (hasbit(dir, DIR_FILE))
+    {
+        try
+        {
+            fs.open(_path, std::ios_base::app);
+        }
+        catch (std::ios_base::failure& e) {
+            dir = DIR_CERR;
+            log(Level::LV_WARN, "�ض���log·�� %s ʧ��", _path);
+        }
+    }
+}
+
+// ɸѡ����ȼ�
+void Loghelper::restrict(unsigned int _levels)
+{
+    levels = _levels;
+}
+
+void Loghelper::close()
+{
+    if (!fs.fail())
+        fs.close();
+    fs.clear();
+}
+
+#undef hasbit
+
+#endif
+
+#endif