Question

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++; } 

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

Answer 1

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

Something like (adapted from this answer):

#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 }