完成拦截器设计

CMakeLists.txt

@@ -19,6 +19,7 @@ endif()
 
 if (SKIPTEST)
 else()
-add_executable(test_main ${CMAKE_SOURCE_DIR}/test_package/main.c ${SRC})
+    add_executable(test_simple ${CMAKE_SOURCE_DIR}/test_package/test_simple.c ${SRC})
+    add_executable(test_interceptor ${CMAKE_SOURCE_DIR}/test_package/test_interceptor.c ${SRC})
 endif()
 

README.md

@@ -56,3 +56,46 @@ int main() {
     return 0;
 }
 ```
+
+### 日志拦截器
+> 支持添加自定义的拦截器， 目前内置了子串拦截器
+
+> 拦截器的作用:可以将拦截到的日志重定向到拦截器的专属处理器中
+
+
+#### 例子
+将拦截到的日志重定向到专属文件处理器中
+```c
+#include "logging.h"
+
+
+int main() {
+    Logging *log = createLogging();
+    Logger *logger = log->getLogger("testLogger",LOG_DEBUG);
+    logger->addHandler(consoleHandler("test"));
+
+    logger->info("This is an info message");
+    logger->error("你好,这是一个错误消息%s", "123");
+    logger->fatal("This is an fatal message");
+    logger->debug("This is a debug message");
+    logger->warning("This is a warning message%s", "123");
+
+    char *test1[] = {"123", "你好"};//要拦截的字符串
+    //添加拦截器，将拦截到的日志重定向到拦截器的专属处理器中
+    log_Interceptor * tint = substringInterceptor(test1,2,LOG_DEBUG,fileHandler("被拦截")); 
+    logger->addInterceptor(tint);
+    printf("Interceptor added\n");
+
+    logger->info("This is an info message");
+    logger->error("你好,这是一个错误消息%s", "123");
+    logger->fatal("This is an fatal message");
+
+    logger->debug("This is a debug message");
+    logger->warning("This is a warning message%s", "123");
+
+    destroyLogging(log);
+    return 0;
+}
+```
+![](docs/img/![](2024-08-13-22-20-18.png).png)
+![](docs/img/2024-08-13-22-21-37.png)

conanfile.py

@@ -9,7 +9,7 @@ import os
 
 class loggingRecipe(ConanFile):
     name = "logging"
-    version = "0.1.0"
+    version = "0.1.1"
     license = "MIT"
     author = "321640253@qq.com"
     url = "https://github.com/WangZhongDian/logging.git"

include/logging.h

@@ -22,17 +22,29 @@ typedef enum {
     L_OK,
 } log_status;
 
-typedef struct Handler {
+typedef struct log_Handler {
     void* out;
     bool apply_color;
+    bool need_free;             //是否有资源释放需求
+    void (*_free)(struct log_Handler* handler);//释放资源
 } log_Handler;
 
 
+typedef struct log_Interceptor {
+    log_level level;                                        //拦截级别
+    log_Handler* handler;                                   //拦截目标处理器
+    bool need_free;                                         //是否有资源释放需求
+    bool (*_dispose)(char* level,const char *message, ...); //拦截触发器
+    void (*_free)(struct log_Interceptor* Interceptor);     //释放资源
+}  log_Interceptor;
+
+
 //日志操作器
 typedef struct Logger
 {
     log_level level;
     log_Handler* handler;
+    log_Interceptor* interceptor;
     const char* name;
     void (*fatal)(const char* format, ...);
     void (*error)(const char* format, ...);
@@ -43,6 +55,7 @@ typedef struct Logger
     void (*addHandler)(log_Handler* handler);
     // void (*addFormat)(const char* format);
     // void (*addFilter)(const char* filter);
+    void (*addInterceptor)(log_Interceptor* Interceptor);
 } Logger;
 
 
@@ -54,13 +67,21 @@ typedef struct Logging {
 
 
 
-Logging* createLogging();                        //创建日志操作器
+Logging* createLogging();                        
 log_status destroyLogging(Logging* logging);
 Logger* getCurrentLogger(void);
 
 
-log_Handler* fileHandler(const char* name);     //文件处理器
+/**
-log_Handler* consoleHandler(const char* name); //控制台处理器
+ * @def 创建日志处理器
+ * @file logging-handler.c
+*/
+log_Handler* fileHandler(const char* name);     
+log_Handler* consoleHandler(const char* name);
+
+
+
+log_Interceptor* substringInterceptor(char *keywords[], int count, log_level level, log_Handler* handler);
 
 
 #endif // __LOGGING_H

src/logging-handler.c

@@ -5,6 +5,15 @@
 #include "logging.h"
 
 
+/**
+* @description ：释放文件日志处理器相关资源
+* @param 
+* @return 
+*/
+static void __freeFileHandler(log_Handler* handler){
+    fclose(handler->out);
+}
+
 /**
 * @description ：文件日志处理器
 * @param 
@@ -17,6 +26,8 @@ log_Handler* fileHandler(const char* name){
     log_Handler* handler = (log_Handler*)malloc(sizeof(log_Handler));
     handler->out = fp;
     handler->apply_color = false;
+    handler->need_free = true;
+    handler->_free = __freeFileHandler;
     return handler;
 }
 
@@ -30,5 +41,7 @@ log_Handler* consoleHandler(const char* name){
     log_Handler* handler = (log_Handler*)malloc(sizeof(log_Handler));
     handler->out = stdout;
     handler->apply_color = true;
+    handler->need_free = false;
+    handler->_free = NULL;
     return handler;
 }

src/logging-interceptor.c

@@ -0,0 +1,114 @@
+/********************************************
+* @Date: 2024 08 12
+* @Description: 日志拦截器
+*********************************************/  
+
+#include "logging.h"
+
+static log_Interceptor* G_interceptor = NULL;
+
+static char **G_keywords = NULL;
+
+void get_next(char *str, int *next) {
+    next[1] = 0;
+    int i=1;
+    int j=0;
+    while (i < strlen(str)) {
+        if (j==0|| str[i] == str[j]) {
+            next[++i] = ++j;
+        }
+        else {
+            j = next[j];
+        }
+    }
+}
+
+
+bool kmp_search(char *substr, char *master) {
+    int i = 0;
+    int j = 0;
+    int substrlen = strlen(substr);
+    int masterlen = strlen(master);
+    int *next = (int *)malloc(sizeof(int) * substrlen + 1);
+    get_next(substr, next);
+
+    while (i < masterlen && j < substrlen) {
+        if (master[i] == substr[j]) {
+            i++;
+            j++;
+        } else {
+            if(j == 0) {
+                i++;
+            } else {
+                j = next[j];
+            }
+        }
+    }
+
+    free(next);
+    if (j == substrlen)return true;
+    else return false;
+}
+
+
+static bool _disposeSubstring(char* level,const char *message, ...){
+    int count = 0;
+
+    if (G_keywords == NULL) {
+        return false;
+    }
+
+    while (G_keywords[count] != NULL)
+    {
+        if (kmp_search(G_keywords[count],(char*)message)) {
+            if(G_interceptor->handler != NULL) {
+
+            }
+            return true;
+        }
+        count++;
+    }
+
+    return false;
+}
+
+/**
+* @description : 释放内存
+*/
+static void _freeSubstring(log_Interceptor* interceptor) {
+    int sum = 0;
+    while (G_keywords[sum] != NULL) {
+        free(G_keywords[sum]);
+        sum++;
+    }
+    free(G_keywords);
+    G_keywords = NULL;
+
+    free(interceptor);
+}
+
+/**
+* @description : 子字符串拦截器
+*/
+log_Interceptor* substringInterceptor(char *keywords[], int count, log_level level, log_Handler* handler) {
+    log_Interceptor* interceptor = (log_Interceptor*)malloc(sizeof(log_Interceptor));
+    interceptor->_dispose = _disposeSubstring;
+    interceptor->need_free = true;
+    interceptor->handler = handler;
+    interceptor->level = level;
+    interceptor->_free = _freeSubstring;
+
+    G_keywords = (char**)malloc( (sizeof(G_keywords)*count) + 1);
+
+    for (int i = 0; i < count; i++) {
+        G_keywords[i] = (char*)malloc(strlen(keywords[i])+1);
+        strcpy(G_keywords[i], keywords[i]);
+    }
+    G_keywords[count] = NULL;
+
+    G_interceptor = interceptor;
+    return G_interceptor;
+}
+
+
+

src/logging.c

@@ -35,13 +35,38 @@ static void addHandler(log_Handler* handler){
     if (G_LOGGER == NULL){
         return;
     }
+    if (G_LOGGER->handler == NULL){
         G_LOGGER->handler = handler;
+        return;
+    }
+
+    if(G_LOGGER->handler->need_free){
+        G_LOGGER->handler->_free(G_LOGGER->handler);
+    }
+    free(G_LOGGER->handler);
+    G_LOGGER->handler = handler;
+}
+
+void addInterceptor(log_Interceptor* Interceptor){
+    if (G_LOGGER == NULL){
+        return;
+    }
+    if (G_LOGGER->interceptor == NULL){
+        G_LOGGER->interceptor = Interceptor;
+        return;
+    }
+
+    if(G_LOGGER->interceptor->need_free){
+        G_LOGGER->interceptor->_free(G_LOGGER->interceptor);
+    }
+    free(G_LOGGER->interceptor);
+    G_LOGGER->interceptor = Interceptor;
 }
 
 /**
 * @description : 内置日志记录函数
 */
-static void _builtin_log(char* level, const char *color, const char* format, ...){
+static void _builtin_log(char* level, const char *color, const char* message, ...){
     if (G_LOGGER == NULL){
         return;
     }
@@ -51,63 +76,77 @@ static void _builtin_log(char* level, const char *color, const char* format, ...
     char timeStr[20];
     getTimeStr(timeStr);
     char logStr[LOG_BUFFER_SIZE];
-    if (G_LOGGER->handler->apply_color) sprintf(logStr, "%s %s%s%s %s\n", timeStr, color,level,RESET, format);
+
-    else sprintf(logStr, "%s %s %s\n", timeStr, level, format);
+    log_Handler * handler = G_LOGGER->handler;
-    fputs(logStr, G_LOGGER->handler->out);
+
+    //通过拦截器
+    if (G_LOGGER->interceptor != NULL){
+        if(G_LOGGER->interceptor->_dispose(level,message)){
+            if(G_LOGGER->interceptor->handler != NULL){
+                handler = G_LOGGER->interceptor->handler;
+            }
+        }
+    }
+
+    //判断处理器是否应用颜色
+    if (handler->apply_color) sprintf(logStr, "%s %s%s%s %s\n", timeStr, color,level,RESET, message);
+    else sprintf(logStr, "%s %s %s\n", timeStr, level, message);
+
+    fputs(logStr, handler->out);
 }
 
 
 //*************************记录日志******************************* */
-static void fatal(const char* format, ...){
+static void fatal(const char* message, ...){
     if (G_LOGGER->level >= LOG_ERROR){
         char logStr[LOG_BUFFER_SIZE];
         va_list args;
-        va_start(args, format);
+        va_start(args, message);
-        vsprintf(logStr, format, args);
+        vsprintf(logStr, message, args);
         va_end(args);
         _builtin_log("Fatal",RED, logStr, args);
     }
 }
 
-static void error(const char* format, ...){
+static void error(const char* message, ...){
     if (G_LOGGER->level >= LOG_ERROR){
         char logStr[LOG_BUFFER_SIZE];
         va_list args;
-        va_start(args, format);
+        va_start(args, message);
-        vsprintf(logStr, format, args);
+        vsprintf(logStr, message, args);
         va_end(args);
         _builtin_log("Error",RED, logStr, args);
     }
 }
 
-static void warning(const char* format, ...){
+static void warning(const char* message, ...){
     if (G_LOGGER->level >= LOG_WARNING){
         char logStr[LOG_BUFFER_SIZE];
         va_list args;
-        va_start(args, format);
+        va_start(args, message);
-        vsprintf(logStr, format, args);
+        vsprintf(logStr, message, args);
         va_end(args);
         _builtin_log("Warning",YELLOW, logStr, args);
     }
 }
 
-static void info(const char* format, ...){
+static void info(const char* message, ...){
     if (G_LOGGER->level >= LOG_INFO){
         char logStr[LOG_BUFFER_SIZE];
         va_list args;
-        va_start(args, format);
+        va_start(args, message);
-        vsprintf(logStr, format, args);
+        vsprintf(logStr, message, args);
         va_end(args);
         _builtin_log("Info",GREEN, logStr, args);
     }
 }
 
-static void debug(const char* format, ...){
+static void debug(const char* message, ...){
     if (G_LOGGER->level >= LOG_DEBUG){
         char logStr[LOG_BUFFER_SIZE];
         va_list args;
-        va_start(args, format);
+        va_start(args, message);
-        vsprintf(logStr, format, args);
+        vsprintf(logStr, message, args);
         va_end(args);
         _builtin_log("Debug",CYAN, logStr, args);
     }
@@ -132,10 +171,12 @@ static Logger* getLogger(const char* name, log_level level){
     logger->debug = debug;
 
     logger->addHandler = addHandler;
+    logger->addInterceptor = addInterceptor;
 
     logger->level = level;
     logger->handler = NULL;
     logger->name = name;
+    logger->interceptor = NULL;
 
     G_LOGGER = logger;
     return G_LOGGER;
@@ -160,9 +201,14 @@ log_status destroyLogging(Logging* logging){
     }
     if (G_LOGGER != NULL){
         if (G_LOGGER->handler != NULL){
-            fclose(G_LOGGER->handler->out);
+            if(G_LOGGER->handler->need_free)G_LOGGER->handler->_free(G_LOGGER->handler);
             free(G_LOGGER->handler);
         }
+
+        if (G_LOGGER->interceptor != NULL){
+            if(G_LOGGER->interceptor->need_free)G_LOGGER->interceptor->_free(G_LOGGER->interceptor);
+        }
+
         free(G_LOGGER);
         G_LOGGER = NULL;
     }
@@ -181,3 +227,5 @@ Logger* getCurrentLogger(void){
     }
     return G_LOGGER;
 }
+
+

test_package/test_interceptor.c

@@ -0,0 +1,30 @@
+#include "logging.h"
+
+
+int main() {
+    Logging *log = createLogging();
+    Logger *logger = log->getLogger("testLogger",LOG_DEBUG);
+    logger->addHandler(consoleHandler("test"));
+
+    logger->info("This is an info message");
+    logger->error("你好,这是一个错误消息%s", "123");
+    logger->fatal("This is an fatal message");
+    logger->debug("This is a debug message");
+    logger->warning("This is a warning message%s", "123");
+
+    char *test1[] = {"123", "你好"};//要拦截的字符串
+    //添加拦截器，将拦截到的日志重定向到拦截器的专属处理器中
+    log_Interceptor * tint = substringInterceptor(test1,2,LOG_DEBUG,fileHandler("被拦截")); 
+    logger->addInterceptor(tint);
+    printf("Interceptor added\n");
+
+    logger->info("This is an info message");
+    logger->error("你好,这是一个错误消息%s", "123");
+    logger->fatal("This is an fatal message");
+
+    logger->debug("This is a debug message");
+    logger->warning("This is a warning message%s", "123");
+
+    destroyLogging(log);
+    return 0;
+}

test_package/test_simple.c

@@ -4,7 +4,6 @@
 int main() {
     Logging *log = createLogging();
     Logger *logger = log->getLogger("testLogger",LOG_DEBUG);
-    // logger->addHandler(fileHandler("test"));
     logger->addHandler(consoleHandler("test"));
 
     logger->info("This is an info message");
@@ -13,9 +12,6 @@ int main() {
     logger->debug("This is a debug message");
     logger->warning("This is a warning message%s", "123");
 
-    Logger *logger1 = getCurrentLogger();
-    logger1->info("This is an info message from logger1");
-
     destroyLogging(log);
     return 0;
 }