C++ 一次创建多级目录

#ifdef WIN32#include <io.h>#include <direct.h> #else#include <unistd.h>#include <sys/stat.h>#endif#include <stdint.h>#include <string>#define MAX_PATH_LEN 256#ifdef WIN32#define ACCESS(fileName,accessMode) _access(fileName,accessMode)#define MKDIR(path) _mkdir(path)#else#define ACCESS(fileName,accessMode) access(fileName,accessMode)#define MKDIR(path) mkdir(path,S_IRWXU | S_IRWXG | S_IROTH | S_IXOTH)#endif// 从左到右依次判断文件夹是否存在,不存在就创建// example: /home/root/mkdir/1/2/3/4/// 注意:最后一个如果是文件夹的话,需要加上 '\' 或者 '/'int32_t createDirectory(const std::string &directoryPath){    uint32_t dirPathLen = directoryPath.length();    if (dirPathLen > MAX_PATH_LEN)    {        return -1;    }    char tmpDirPath[MAX_PATH_LEN] = { 0 };    for (uint32_t i = 0; i < dirPathLen; ++i)    {        tmpDirPath[i] = directoryPath[i];        if (tmpDirPath[i] == '\\' || tmpDirPath[i] == '/')        {            if (ACCESS(tmpDirPath, 0) != 0)            {                int32_t ret = MKDIR(tmpDirPath);                if (ret != 0)                {                    return ret;                }            }        }    }    return 0;}int32_t main(int32_t argc, char *argv[]){    if (argc == 2)    {        return createDirectory(argv[1]);    }    return 0;}