scandir 使用示例

int filter_fn(const struct dirent * ent) {

    if (ent->d_type != DT_REG)

        return 0;

    return (strncmp(ent->d_name, "w_", strlen("w_")) == 0);

}

void SysWatcher::scan_log(const char * dir_name) {

    int n;

    struct dirent **namelist; // struct dirent * namelist[];

    n = scandir(dir_name, &namelist, filter_fn, alphasort);

    if (n < 0) {

        ALOGD(" SysWatcher scandir error! n<0 n=%d\n", n);

    }

    if (n == 0) {

        free(namelist);

    } else {

        for (int i = 0; i < n; i++) {

            printf("%s\n", namelist[i]->d_name);

            string fileName = string(namelist[i]->d_name);

            //ALOGD(LOG_TAG " SysWatcher old push %s------\n", fileName.c_str());

            logFiles.push(fileName);

            free(namelist[i]);

        }

        free(namelist);

    }

    return;

}