Linux Dirent：获取目录中所有文件夹的列表

Question

Following is the code-snippet that I am using to get a list of all the folders within the current folder. I want to get red of the "." and ".." folders from the list but somehow cant.

const char* root_dir_c  = root_dir.c_str();
DIR *pdir               = opendir(root_dir_c);
struct dirent *entry    = readdir(pdir);

while (entry != NULL){
    if  ((entry->d_type == DT_DIR) && (entry->d_name != ".") && (entry->d_name != "..")){
        // DO STUFF
    }
    entry = readdir(pdir);
}

Can you please help ?

Answer 1

entry->d_name是一个char array ，不适用于!= ，您将需要使用strcmp或类似名称。

Answer 2

The dirent structure actually uses a char* not std::string . Thus you're going to compare two pointer values, which are never likely to be the same.

You have to use strcmp() for this case:

strcmp(entry->d_name,".") == 0