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dirent.h distinguishes files from directories ?

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# 1  
Old 02-04-2010
dirent.h distinguishes files from directories ?
In C, I want to list all files recursively in a folder. But to do that, how can I distinguish files from directories ? (I realise I could use find in a shell script or use system("ls -R > file") but I want to use only C.)

Code:
DIR        *ptr;
struct dirent    *files;
ptr = opendir("path-to-directory");

while( (files = readdir(ptr)) )
{
    printf("%s\n", files->d_name);
}
closedir(ptr);

Last edited by cyler; 02-04-2010 at 06:21 PM..
# 2  
Old 02-04-2010
See man 2 stat.

Code:
{
        struct statbuf buf;
        if(stat("/etc", &buf) != 0)
                perror("couldn't stat");
        else if(S_ISDIR(buf.st_mode))
                printf("/etc is a directory\n");
        else
                printf("/etc is a file\n");
}

Don't be tempted to just check the d_type field of the dir entries. We've had people ask here when it suddenly stops working, it turns out some filesystems report filetype there and some don't.
# 3  
Old 02-05-2010
Also, look at "man ftw".
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