164 lines
3.9 KiB
Markdown
164 lines
3.9 KiB
Markdown
# C语言日志库logging
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[English](README.en.md)
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## 简介
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logging是一个轻量级的简单易用C语言日志库，支持日志级别、日志格式、日志输出、日志文件等功能。
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## 功能
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- 支持日志级别：DEBUG、INFO、WARN、ERROR、FATAL
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- 支持日志格式：时间戳、日志级别、日志内容
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- 支持日志输出：控制台、文件
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- 支持日志文件：自动创建、自动滚动、日志分割
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## 安装
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- conan安装使用
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```shell
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conan create .
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```
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- cmake安装使用
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```shell
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```
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## 使用方法
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### 控制台日志
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```c
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#include "logging.h"
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int main() {
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Logger *logger = newDefaultLogger("testLogger", LOG_DEBUG);
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log_info("This is an info message");
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log_error("This is an error message%s", "123");
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log_fatal("This is an fatal message");
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log_debug("This is a debug message");
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log_warning("This is a warning message%s", "123");
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destroyDefaultLogger();
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return 0;
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}
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```
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### 文件日志
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```c
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#include "logging.h"
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#include "logging/logging-handler.h"
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int main() {
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Logger *logger = newDefaultLogger("testLogger", LOG_DEBUG);
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logger->addHandler(loggingHandlerFile("test1", 1024*1024));
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log_info("This is an info message");
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log_error("This is an error message%s", "123");
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log_fatal("This is an fatal message");
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log_debug("This is a debug message");
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log_warning("This is a warning message%s", "123");
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destroyDefaultLogger();
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return 0;
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}
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```
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### 日志过滤器
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> 支持添加自定义的过滤器， 目前内置了子串过滤器
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> 过滤器的作用:可以将过滤到的日志重定向到过滤器的专属处理器中
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#### 单个子串过滤器
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将过滤到的日志重定向到专属处理器中
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```c
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#include "logging.h"
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#include <stdio.h>
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int main() {
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Logger *logger = newDefaultLogger("testLogger", LOG_DEBUG);
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log_info("This is an info message");
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log_error("This is an error message%s", "123");
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log_fatal("This is an fatal message");
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log_debug("This is a debug message");
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log_warning("This is a warning message%s", "123");
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char *test1[] = {"123", "tt", NULL};
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log_filter *tint = loggingFilterSubStr(
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test1,
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LOG_DEBUG,
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loggingHandlerFile("test_interceptor", 1024 * 1024),
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true);
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logger->addFilter(tint);
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printf("\n");
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printf("filter added\n");
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printf("\n");
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log_info("This is an info message");
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log_error("This is an error message%s", "123");
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log_fatal("This is an fatal message");
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log_debug("This is a debug message");
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log_warning("This is a warning message%s", "123");
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destroyDefaultLogger();
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return 0;
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}
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```
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#### 多个子串过滤器
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```c
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#include "logging.h"
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#include <stdbool.h>
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#include <stdio.h>
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#include <time.h>
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int main() {
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Logger *logger = newDefaultLogger("testLogger", LOG_DEBUG);
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log_info("This is an info message");
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log_error("This is an error message%s", "123");
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log_fatal("This is an fatal message");
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log_debug("This is a debug message");
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log_warning("This is a warning message%s", "123");
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char *test1[] = {"This",NULL};
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log_filter *tint = loggingFilterSubStr(
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test1,
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LOG_DEBUG,
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loggingHandlerFile("test_interceptor", 1024 * 1024),
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false);
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logger->addFilter(tint);
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char *test2[] = {"123",NULL};
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log_filter *tint1 = loggingFilterSubStr(
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test2,
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LOG_DEBUG,
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loggingHandlerFile("test_interceptor1", 1024 * 1024),
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true);
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logger->addFilter(tint1);
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printf("\n");
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printf("filter added\n");
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printf("\n");
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log_info("This is an info message");
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log_error("This is an error message%s", "123");
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log_fatal("This is an fatal message");
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log_debug("This is a debug message");
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log_warning("This is a warning message%s", "123");
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destroyDefaultLogger();
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return 0;
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}
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```
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