如何检查文件是否为常规文件? [英] How do i check if a file is a regular file?

问题描述

我如何在C ++中检查文件是否为常规文件(而不是目录，管道等)?我需要一个函数isFile().

How do i check in C++ if a file is a regular file (and is not a directory, a pipe, etc.)? I need a function isFile().

DIR *dp;
struct dirent *dirp;

while ((dirp = readdir(dp)) != NULL) {
if ( isFile(dirp)) {
     cout << "IS A FILE!" << endl;
i++;
}

我已经尝试过将dirp-> d_type与(unsigned char)0x8进行比较，但它似乎无法通过不同系统移植.

I've tried comparing dirp->d_type with (unsigned char)0x8, but it seems not portable through differents systems.

推荐答案

您需要在文件上调用stat(2)，然后在st_mode上使用S_ISREG宏.

You need to call stat(2) on the file, and then use the S_ISREG macro on st_mode.

类似(改编自此答案):

#include <sys/stat.h>

struct stat sb;

if (stat(pathname, &sb) == 0 && S_ISREG(sb.st_mode))
{
    // file exists and it's a regular file
}

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