andorid 自定义log存入文件

//// 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 1024int 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;}