/*.......................................................................
* Create a new PathName object.
*
* Output:
* return PathName * The new object, or NULL on error.
*/
PathName *_new_PathName(void)
{
PathName *path; /* The object to be returned */
/*
* Allocate the container.
*/
path = (PathName *) malloc(sizeof(PathName));
if(!path) {
errno = ENOMEM;
return NULL;
};
/*
* Before attempting any operation that might fail, initialize the
* container at least up to the point at which it can safely be passed
* to _del_PathName().
*/
path->name = NULL;
path->dim = 0;
/*
* Figure out the maximum length of an expanded pathname.
*/
path->dim = _pu_pathname_dim();
if(path->dim == 0)
return _del_PathName(path);
/*
* Allocate the pathname buffer.
*/
path->name = (char *)malloc(path->dim * sizeof(char));
if(!path->name) {
errno = ENOMEM;
return _del_PathName(path);
};
return path;
}
/*.......................................................................
* Delete a ExpandFile object.
*
* Input:
* ef ExpandFile * The object to be deleted.
* Output:
* return ExpandFile * The deleted object (always NULL).
*/
ExpandFile *del_ExpandFile(ExpandFile *ef)
{
if(ef) {
DirNode *dnode;
/*
* Delete the string segments.
*/
ef->sg = _del_StringGroup(ef->sg);
/*
* Delete the cached directory readers.
*/
for(dnode=ef->cache.head; dnode; dnode=dnode->next)
dnode->dr = _del_DirReader(dnode->dr);
/*
* Delete the memory from which the DirNode list was allocated, thus
* deleting the list at the same time.
*/
ef->cache.mem = _del_FreeList("del_ExpandFile", ef->cache.mem, 1);
ef->cache.head = ef->cache.tail = ef->cache.next = NULL;
/*
* Delete the pathname buffer.
*/
ef->path = _del_PathName(ef->path);
/*
* Delete the home-directory lookup object.
*/
ef->home = _del_HomeDir(ef->home);
/*
* Delete the array of pointers to files.
*/
if(ef->result.files) {
free(ef->result.files);
ef->result.files = NULL;
};
/*
* Delete the container.
*/
free(ef);
};
return NULL;
}
