c的日志库

c的json库不知道啥时候才有心情把它写完

我想的是先看看网络之类的再去完一下c的json库

最近又有了个新的玩具，做了一个天猫书店的抓取代码，php写的，打算把它用c重复来一遍，练练手~~

头文件

////  log.h//  tmail_spider////  Created by bikang on 16/9/20.//  Copyright (c) 2016年 bikang. All rights reserved.//#ifndef __tmail_spider__log__#define __tmail_spider__log__#include <string.h>#include<errno.h>#include <stdlib.h>#include "common.h"//error string#define ERROR_STR() (errno == 0 ? "no error":strerror(errno))//error#define LOG_ERROR(M,...)\fprintf(stderr, "[error](%s:%d,strerror:%s)"M"",__FILE__,__LINE__,ERROR_STR(),##__VA_ARGS__);//info#define LOG_INFO(M,...)\fprintf(stderr, "[error](%s:%d)"M"",__FILE__,__LINE__,##__VA_ARGS__);//error in filevoid log_file(char* cate,int cate_len,const char *filename,const char *str,int len);void log_error_file(const char *filename,const char *str,int len);void log_info_file(const char *filename,const char *str,int len);//error in file more data 运行传递多个参数#endif /* defined(__tmail_spider__log__) */

实现

////  log.c//  tmail_spider////  Created by bikang on 16/9/20.//  Copyright (c) 2016年 bikang. All rights reserved.//#include <unistd.h>#include <stdio.h>#include "log.h"#define ERROR_STR "error|"#define ERROR_STR_LEN 6#define INFO_STR "info|"#define INFO_STR_LEN 5void log_file(char* cate,int cate_len,const char *filename,const char *str,int len){    FILE *fp = fopen(filename, "a+");    if(fp != NULL){        char date_str[30];        getLocalTime(date_str,1);        fwrite(date_str, strlen(date_str), 1, fp);        fwrite(cate, cate_len, 1, fp);        fwrite(str, len, 1, fp);        fwrite("\n", 2, 1, fp);        fclose(fp);    }    return;}void log_error_file(const char *filename,const char *str,int len){    log_file(ERROR_STR,ERROR_STR_LEN,filename,str,len);}void log_info_file(const char *filename,const char *str,int len){    log_file(INFO_STR,INFO_STR_LEN,filename,str,len);}

公共文件

////  common.h//  tmail_spider////  Created by bikang on 16/9/20.//  Copyright (c) 2016年 bikang. All rights reserved.//#ifndef __tmail_spider__common__#define __tmail_spider__common__#include <stdio.h>void getLocalTime(char*date_str,int flag);#endif /* defined(__tmail_spider__common__) */

实现

////  common.c//  tmail_spider////  Created by bikang on 16/9/20.//  Copyright (c) 2016年 bikang. All rights reserved.//#include "common.h"#include <stdio.h>#include <stdlib.h>#include <time.h>#include <unistd.h>#include <sys/time.h>void getLocalTime(char*date_str,int flag){    struct tm *nowdate;    time_t now;    time(&now);    nowdate = localtime(&now);    if(flag == 1){        sprintf(date_str,"%d-%02d-%02d %02d:%02d:%02d|",(nowdate->tm_year+1900),nowdate->tm_mon+1,nowdate->tm_mday,nowdate->tm_hour,nowdate->tm_min,nowdate->tm_sec);    }else{        sprintf(date_str,"%d-%02d-%02d %02d:%02d:%02d",(nowdate->tm_year+1900),nowdate->tm_mon+1,nowdate->tm_mday,nowdate->tm_hour,nowdate->tm_min,nowdate->tm_sec);    }}

测试

////  main.c//  tmail_spider////  Created by bikang on 16/9/20.//  Copyright (c) 2016年 bikang. All rights reserved.//#include<stdio.h>#include<string.h>#include<errno.h>#include<stdlib.h>#include "log.h"#include "common.h"//test errorvoid test_error();//test logvoid test_show_error();//test file logvoid test_file_error();int main(int argc, const char * argv[]) {    //test_error();    //test_show_error();    test_file_error();    return 0;}void test_file_error(){    char filename[20] = "/tmp/1.txt";    char mesg[20] = "error mesg可是";    log_error_file(filename,mesg,sizeof(mesg));    log_info_file(filename,mesg,sizeof(mesg));    printf("log file end");}void test_show_error(){    printf("\n");    LOG_ERROR("error");    printf("\n");    LOG_INFO("info");}void test_error(){    printf("error:%s\n",strerror(1));    FILE*fp;    extern int errno;    char*message;    if(NULL==(fp=fopen("/dev/dsp","r+")))    {        printf("errno=%d\n",errno);        message=strerror(errno);        printf("Mesg:%s\n",message);    }    //exit(0);}