检查目录是否存在的便携式方法[Windows/Linux, C]

I would like to check if a given directory exists. I know how to do this on Windows:

我想检查给定目录是否存在。我知道如何在Windows上操作:

BOOL DirectoryExists(LPCTSTR szPath)
{
  DWORD dwAttrib = GetFileAttributes(szPath);

  return (dwAttrib != INVALID_FILE_ATTRIBUTES && 
         (dwAttrib & FILE_ATTRIBUTE_DIRECTORY));
}

and Linux:

和Linux:

DIR* dir = opendir("mydir");
if (dir)
{
    /* Directory exists. */
    closedir(dir);
}
else if (ENOENT == errno)
{
    /* Directory does not exist. */
}
else
{
    /* opendir() failed for some other reason. */
}

But I need a portable way of doing this .. Is there any way to check if a directory exists no matter what OS Im using? Maybe C standard library way?

但是我需要一种便携式的方法。有没有办法检查一个目录是否存在，无论我使用什么操作系统?也许是C标准库方式?

I know that I can use preprocessors directives and call those functions on different OSes but thats not the solution Im asking for.

我知道我可以使用预处理指令并在不同的操作系统上调用这些函数，但这不是我所要求的解决方案。

I END UP WITH THIS, AT LEAST FOR NOW:

我的结局是这样的，至少现在是这样:

#include <sys/types.h>
#include <sys/stat.h>
#include <stdio.h>
#include <stdlib.h>

int dirExists(const char *path)
{
    struct stat info;

    if(stat( path, &info ) != 0)
        return 0;
    else if(info.st_mode & S_IFDIR)
        return 1;
    else
        return 0;
}

int main(int argc, char **argv)
{
    const char *path = "./TEST/";
    printf("%d\n", dirExists(path));
    return 0;
}

3 个解决方案

#1

stat() works on Linux., UNIX and Windows as well:

stat()在Linux上工作。、UNIX和Windows系统:

#include <sys/types.h>
#include <sys/stat.h>

struct stat info;

if( stat( pathname, &info ) != 0 )
    printf( "cannot access %s\n", pathname );
else if( info.st_mode & S_IFDIR )  // S_ISDIR() doesn't exist on my windows 
    printf( "%s is a directory\n", pathname );
else
    printf( "%s is no directory\n", pathname );

#2

Use boost::filesystem, that will give you a portable way of doing those kinds of things and abstract away all ugly details for you.

使用boost:::文件系统，这将为您提供一种可移植的方式来完成这些工作，并为您抽象出所有难看的细节。

#3

You can use the GTK glib to abstract from OS stuff.

您可以使用GTK glib从OS内容中抽象出来。

glib provides a g_dir_open() function which should do the trick.

glib提供了一个g_dir_open()函数，应该可以实现这个功能。

#1