【需求】新增日志回调能力。

include/logger/LWLogger.h

+#ifndef LWLogger_h
+#define LWLogger_h
+
+#include <string>
+
+namespace LW {
+
+typedef enum LoggerInfo {
+    kLoggerInfo_Debug    = 0,
+    kLoggerInfo_Warning,
+    kLoggerInfo_Info,
+    kLoggerInfo_Error,
+    kLoggerInfo_Assert,
+} LoggerInfo;
+
+class LoggerCallBack {
+public:
+    LoggerCallBack() = default;
+    
+    virtual ~LoggerCallBack() = default;
+    
+    virtual void onCallBack(LoggerInfo info, const char* message, int length) = 0;
+};
+
+class Logger {
+public:
+    static Logger* getInstance();
+    
+public:
+    explicit Logger(LoggerCallBack* callBack);
+    
+    ~Logger();
+    
+    void log(LoggerInfo info, const char* func, int line, const char* format, ...);
+    
+    void setLoggerCallBack(LoggerCallBack* callBack);
+    void setLoggerBufferSize(int maxBufferSize);
+    void setLoggerInfo(LoggerInfo info);
+    
+private:
+    LoggerCallBack* callBack_;
+    LoggerInfo      info_;
+    
+    int        max_buffer_size_;
+};
+}
+
+#define LWLOGD(format, ...) LW::Logger::getInstance()->log(kLoggerInfo_Debug, __FUNCTION__, __LINE__, format, ##__VA_ARGS__)
+#define LWLOGW(format, ...) LW::Logger::getInstance()->log(kLoggerInfo_Warning, __FUNCTION__, __LINE__, format, ##__VA_ARGS__)
+#define LWLOGI(format, ...) LW::Logger::getInstance()->log(kLoggerInfo_Info, __FUNCTION__, __LINE__, format, ##__VA_ARGS__)
+#define LWLOGE(format, ...) LW::Logger::getInstance()->log(kLoggerInfo_Error, __FUNCTION__, __LINE__, format, ##__VA_ARGS__)
+#define LWLOGA(format, ...) LW::Logger::getInstance()->log(kLoggerInfo_Assert, __FUNCTION__, __LINE__, format, ##__VA_ARGS__)
+
+#endif /* LWLogger_h */

project/iPhone/LWAVFoundation/LWAVFoundation.xcodeproj/project.pbxproj

@@ -7,6 +7,7 @@
 	objects = {
 
 /* Begin PBXBuildFile section */
+		A21B504D26E709430038281E /* LWLogger.cpp in Sources */ = {isa = PBXBuildFile; fileRef = A21B504C26E709430038281E /* LWLogger.cpp */; };
 		A272199A26E1C3E300501840 /* LWURL.cc in Sources */ = {isa = PBXBuildFile; fileRef = A272199926E1C3E300501840 /* LWURL.cc */; };
 		A2847B9026CE7B1D00AF0E60 /* AppDelegate.m in Sources */ = {isa = PBXBuildFile; fileRef = A2847B8F26CE7B1D00AF0E60 /* AppDelegate.m */; };
 		A2847B9326CE7B1D00AF0E60 /* SceneDelegate.m in Sources */ = {isa = PBXBuildFile; fileRef = A2847B9226CE7B1D00AF0E60 /* SceneDelegate.m */; };
@@ -29,6 +30,8 @@
 /* End PBXBuildFile section */
 
 /* Begin PBXFileReference section */
+		A21B504B26E7092F0038281E /* LWLogger.h */ = {isa = PBXFileReference; lastKnownFileType = sourcecode.c.h; path = LWLogger.h; sourceTree = "<group>"; };
+		A21B504C26E709430038281E /* LWLogger.cpp */ = {isa = PBXFileReference; lastKnownFileType = sourcecode.cpp.cpp; path = LWLogger.cpp; sourceTree = "<group>"; };
 		A272199826E1C3B700501840 /* LWURL.h */ = {isa = PBXFileReference; lastKnownFileType = sourcecode.c.h; path = LWURL.h; sourceTree = "<group>"; };
 		A272199926E1C3E300501840 /* LWURL.cc */ = {isa = PBXFileReference; lastKnownFileType = sourcecode.cpp.cpp; path = LWURL.cc; sourceTree = "<group>"; };
 		A2847B8B26CE7B1D00AF0E60 /* LWAVFoundation.app */ = {isa = PBXFileReference; explicitFileType = wrapper.application; includeInIndex = 0; path = LWAVFoundation.app; sourceTree = BUILT_PRODUCTS_DIR; };
@@ -117,6 +120,7 @@
 		A272199E26E1C7BF00501840 /* logger */ = {
 			isa = PBXGroup;
 			children = (
+				A21B504B26E7092F0038281E /* LWLogger.h */,
 			);
 			path = logger;
 			sourceTree = "<group>";
@@ -124,6 +128,7 @@
 		A272199F26E1C7C600501840 /* logger */ = {
 			isa = PBXGroup;
 			children = (
+				A21B504C26E709430038281E /* LWLogger.cpp */,
 			);
 			path = logger;
 			sourceTree = "<group>";
@@ -288,6 +293,7 @@
 			isa = PBXSourcesBuildPhase;
 			buildActionMask = 2147483647;
 			files = (
+				A21B504D26E709430038281E /* LWLogger.cpp in Sources */,
 				A272199A26E1C3E300501840 /* LWURL.cc in Sources */,
 				A2847D8626CFB6BC00AF0E60 /* LWCheckBoxView.m in Sources */,
 				A2847DC326D1FC2800AF0E60 /* LWVideoCaptureSession.m in Sources */,

src/logger/LWLogger.cpp

+#include <stdio.h>
+#include <mutex>
+
+#include "LWLogger.h"
+
+namespace LW {
+
+class DefaultLoggerCallBack : public LoggerCallBack {
+public:
+    DefaultLoggerCallBack() : LoggerCallBack() {
+        
+    }
+    
+    virtual ~DefaultLoggerCallBack() {
+        
+    }
+    
+    virtual void onCallBack(LoggerInfo info, const char* message, int length) override {
+#ifdef __APPLE__
+        printf("%s\n", message);
+#else
+#endif
+    }
+};
+
+static DefaultLoggerCallBack* kDefaultLoggerCallBack;
+}
+
+namespace LW {
+
+Logger* Logger::getInstance() {
+    static Logger* logger = nullptr;
+    static std::once_flag flag1;
+    std::call_once(flag1, [](DefaultLoggerCallBack** callback, Logger** logger) -> void {
+        if (callback && !(*callback)) {
+            *callback = new DefaultLoggerCallBack;
+        }
+        
+        if (logger && !(*logger)) {
+            *logger = new Logger(kDefaultLoggerCallBack);
+        }
+    }, &kDefaultLoggerCallBack, &logger);
+    return logger;
+}
+
+Logger::Logger(LoggerCallBack* callBack) {
+    if (callBack == nullptr) {
+        callBack_ = kDefaultLoggerCallBack;
+    } else {
+        callBack_ = callBack;
+    }
+    info_ = kLoggerInfo_Info;
+    max_buffer_size_ = 2048;
+}
+
+Logger::~Logger() {
+    callBack_ = nullptr;
+}
+
+void Logger::log(LoggerInfo info, const char *func, int line, const char *format, ...) {
+    if (info < info_) {
+        return;
+    }
+    
+    va_list va_pointer;
+    int pos = 0;
+    va_start(va_pointer, format);
+    
+    // todo memory pool
+    char* buffer = new char[max_buffer_size_];
+    pos  = snprintf(buffer, max_buffer_size_, "[%s:%d]", func, line);
+    pos += vsnprintf(buffer + pos, max_buffer_size_ - pos, format, va_pointer);
+    va_end(va_pointer);
+    
+    if (callBack_) {
+        callBack_->onCallBack(info, buffer, pos);
+    }
+    delete [] buffer;
+}
+
+void Logger::setLoggerInfo(LoggerInfo info) {
+    info_ = info;
+}
+
+void Logger::setLoggerBufferSize(int maxBufferSize) {
+    if (maxBufferSize == max_buffer_size_) {
+        return;
+    }
+    
+    max_buffer_size_ = maxBufferSize;
+}
+
+void Logger::setLoggerCallBack(LoggerCallBack *callBack) {
+    callBack_ = callBack;
+}
+
+}

src/network/LWURL.cc

@@ -7,6 +7,7 @@
 #include <sstream>
 
 #include "LWURL.h"
+#include "LWLogger.h"
 
 namespace LW {
 
@@ -139,6 +140,7 @@ bool URL::parseUrl(const std::string& url) {
     ostr << "}),port(" << port_ << "),url:(" << url_ << ")";
     description_ = ostr.str();
     
+    LWLOGI("description:%s", description().c_str());
     return true;
 }