andorid 自定义log存入文件

矫情吗；* 2022-06-07 04:49 171阅读 0赞

//
    // Created by darren on 17-10-9.
    //
    
    #include <stdio.h>
    #include <string.h>
    #include <stdlib.h>
    #include <unistd.h>
    #include <stdarg.h>
    #include <time.h>
    #include <sys/time.h>
    #include "5.log.h"
    
    #define PROCESSNAME  "log.tmp"
    #define MAXBUFSIZE 1024
    
    int get_current_dir(char *buf);
    
    int get_time(char *data);
    
    int file_copy(const char *in, const char *out);
    
    
    int main() {
    
        int a = 678;
        Log("tian %d", a);
        return 0;
    }
    
    
    int get_current_dir(char *buf) {
    
        int count;
        count = readlink("/proc/self/exe", buf, MAXBUFSIZE);
        if (count < 0 || count >= MAXBUFSIZE) {
            printf("Failed\n");
            return -1;
        }
        buf[count] = '\0';
        char *tmp = strrchr(buf, '/');
        if (!tmp) {
            return -2;
        }
        buf[strlen(buf) - strlen(tmp)] = '\0';
        return 0;
    }
    
    int get_time(char *data) {
        if (!data) { return -1; }
        time_t t;
        time(&t);
        struct tm local = {
      0};
        localtime_r(&t, &local);
        sprintf(data, "%04d-%02d-%02d %02d:%02d:%02d", local.tm_year + 1900,
                local.tm_mon + 1, local.tm_mday, local.tm_hour, local.tm_min, local.tm_sec);
        return 0;
    }
    
    long int get_timeStemap() {
    
        struct timeval tv;
        gettimeofday(&tv, NULL);
        printf("second:%ld\n", tv.tv_sec);  //秒
       // printf("millisecond:%ld\n", tv.tv_sec * 1000 + tv.tv_usec / 1000);  //毫秒
       // printf("microsecond:%ld\n", tv.tv_sec * 1000000 + tv.tv_usec);  //微秒
        return tv.tv_sec * 1000 + tv.tv_usec / 1000;
    }
    
    int file_copy(const char *from, const char *to) {
    
        if (!from || !to) {
            return -1;
        }
        if (access(from, F_OK) != 0) {
            return -2;
        }
        FILE *fp = fopen(from, "r");
        if (!fp) {
            return -3;
        }
        FILE *ft = fopen(to, "w+");
        if (!ft) {
            return -4;
        }
        char tmp[1024];
        size_t len;
        if (len = fread(tmp, 1, sizeof(tmp), fp)) {
            fwrite(tmp, 1, len, ft);
        }
        if (fp) {
            fclose(fp);
        }
        if (ft) {
            fclose(ft);
        }
        return 0;
    }
    
    
    int Log(const char *fm, ...) {
        int buflen = 5120;
        char buf[buflen];
        int i = 0;
        memset(buf, 0, buflen);
        va_list args;
        va_start(args, fm);
        vsnprintf(buf, buflen, fm, args);
        va_end(args);
    
        char *logpath = (char *) malloc(MAXBUFSIZE);
        get_current_dir(logpath);
        if (access(logpath, 0) != 0) {
            char cmdstr[256] = {
      0};
            sprintf(cmdstr, "mkdir -p %s", logpath);
            system(cmdstr);
        }
        char fname[256];
        memset(fname, 0, sizeof(fname));
        sprintf(fname, "%s/%s", logpath, PROCESSNAME);
    
        FILE *logfile = NULL;
        do {
            logfile = fopen(fname, "ab+");
            if (logfile)
                break;
        } while (i < 3);
        if (!logfile) {
            return -2;
        }
    
        char *pTemp = (char *) malloc(MAXBUFSIZE);
        if (!pTemp) { return -2; }
        get_time(pTemp);
    
        char *dg = (char *) malloc(MAXBUFSIZE);
        if (!dg) { return -2; }
        sprintf(dg, "%s:%s\n", pTemp, buf);
        printf("%s\n", dg);
    
        fwrite(dg, 1, strlen(dg), logfile);
        //const char *dest = "/home/darren/ClionProjects/My_test/c++_test/effective_c++_test/log.11";
        if (ftell(logfile) > 15 * 1024 * 1024) { // 15M ,判断文件大小
            fclose(logfile);
            char path[1024];
            sprintf(path, "%s/%ld", logpath, get_timeStemap());
            printf("path:%s\n", path);
            if (!rename(fname, path)) {
                return -5;
            }
        } else {
            fclose(logfile);
        }
        //file_copy(fname, dest);
    
    
        if (pTemp) {
            free(pTemp);
            pTemp = NULL;
        }
        if (dg) {
            free(dg);
            dg = NULL;
        }
        if (logpath) {
            free(logpath);
            logpath = NULL;
        }
    
        return 0;
    }