/**
* Find the folder name given the folder's id.
*
* @param folders the folders list for the device
* @param id the folder_id to look up, returns the folder's parent folder_id
* @param name returns the name of the folder or NULL on failure
* @see discover_filepath_from_id()
*/
static void find_folder_name(LIBMTP_folder_t* folders, uint32_t* id, char** name)
{
// FIXME this function is exactly LIBMTP_Find_Folder
LIBMTP_folder_t* f = LIBMTP_Find_Folder(folders, *id);
if(f == NULL) {
*name = NULL;
}
else { // found it!
*name = strdup(f->name);
*id = f->parent_id;
}
}
static void
delete_done_cb (LIBMTP_mtpdevice_t *device, TracksDeletedCallbackData *data)
{
LIBMTP_folder_t *folders;
LIBMTP_file_t *files;
data->actually_free = FALSE;
update_free_space_cb (device, RB_MTP_SOURCE (data->source));
/* if any of the folders we just deleted from are now empty, delete them */
folders = LIBMTP_Get_Folder_List (device);
files = LIBMTP_Get_Filelisting_With_Callback (device, NULL, NULL);
if (folders != NULL) {
GHashTableIter iter;
gpointer key;
g_hash_table_iter_init (&iter, data->check_folders);
while (g_hash_table_iter_next (&iter, &key, NULL)) {
LIBMTP_folder_t *f;
LIBMTP_folder_t *c;
LIBMTP_file_t *file;
uint32_t folder_id = GPOINTER_TO_UINT(key);
while (folder_id != device->default_music_folder && folder_id != 0) {
f = LIBMTP_Find_Folder (folders, folder_id);
if (f == NULL) {
rb_debug ("unable to find folder %u", folder_id);
break;
}
/* don't delete folders with children that we didn't just delete */
for (c = f->child; c != NULL; c = c->sibling) {
if (g_hash_table_lookup (data->check_folders,
GUINT_TO_POINTER (c->folder_id)) == NULL) {
break;
}
}
if (c != NULL) {
rb_debug ("folder %s has children", f->name);
break;
}
/* don't delete folders that contain files */
for (file = files; file != NULL; file = file->next) {
if (file->parent_id == folder_id) {
break;
}
}
if (file != NULL) {
rb_debug ("folder %s contains at least one file: %s", f->name, file->filename);
break;
}
/* ok, the folder is empty */
rb_debug ("deleting empty folder %s", f->name);
LIBMTP_Delete_Object (device, f->folder_id);
/* if the folder we just deleted has siblings, the parent
* can't be empty.
*/
if (f->sibling != NULL) {
rb_debug ("folder %s has siblings, can't delete parent", f->name);
break;
}
folder_id = f->parent_id;
}
}
LIBMTP_destroy_folder_t (folders);
} else {
rb_debug ("unable to get device folder list");
}
/* clean up the file list */
while (files != NULL) {
LIBMTP_file_t *n;
n = files->next;
LIBMTP_destroy_file_t (files);
files = n;
}
g_idle_add ((GSourceFunc) delete_done_idle_cb, data);
}
