int removeFile()

in hfs/catalog.c [807:894]
78 lines of code
10 McCabe index (conditional complexity)

int removeFile(const char* fileName, Volume* volume) {
	HFSPlusCatalogRecord* record;
	HFSPlusCatalogKey key;
	io_func* io;
  HFSPlusCatalogFolder* parentFolder = 0;

	record = getRecordFromPath3(fileName, volume, NULL, &key, TRUE, FALSE, kHFSRootFolderID);
	if(record != NULL) {
		parentFolder = (HFSPlusCatalogFolder*) getRecordByCNID(key.parentID, volume);
		if(parentFolder != NULL) {
			if(parentFolder->recordType != kHFSPlusFolderRecord) {
				ASSERT(FALSE, "parent not folder");
				free(parentFolder);
				return FALSE;
			}
		} else {
			ASSERT(FALSE, "can't find parent");
			return FALSE;
		}

		if(record->recordType == kHFSPlusFileRecord) {
			io = openRawFile(((HFSPlusCatalogFile*)record)->fileID, &((HFSPlusCatalogFile*)record)->dataFork, record, volume);
			allocate((RawFile*)io->data, 0);
			CLOSE(io);

			removeFromBTree(volume->catalogTree, (BTKey*)(&key));
			XAttrList* next;
			XAttrList* attrs = getAllExtendedAttributes(((HFSPlusCatalogFile*)record)->fileID, volume);
			if(attrs != NULL) {
				while(attrs != NULL) {
					next = attrs->next;
					unsetAttribute(volume, ((HFSPlusCatalogFile*)record)->fileID, attrs->name);
					free(attrs->name);
					free(attrs);
					attrs = next;
				}	
			}	


			key.nodeName.length = 0;
			key.parentID = ((HFSPlusCatalogFile*)record)->fileID;
			key.keyLength = sizeof(key.parentID) + sizeof(key.nodeName.length);
			removeFromBTree(volume->catalogTree, (BTKey*)(&key));

			volume->volumeHeader->fileCount--;
		} else {
			if(((HFSPlusCatalogFolder*)record)->valence > 0) {
				free(record);
				free(parentFolder);
				ASSERT(FALSE, "folder not empty");
				return FALSE;
			} else {
				removeFromBTree(volume->catalogTree, (BTKey*)(&key));
				XAttrList* next;
				XAttrList* attrs = getAllExtendedAttributes(((HFSPlusCatalogFolder*)record)->folderID, volume);
				if(attrs != NULL) {
					while(attrs != NULL) {
						next = attrs->next;
						unsetAttribute(volume, ((HFSPlusCatalogFolder*)record)->folderID, attrs->name);
						free(attrs->name);
						free(attrs);
						attrs = next;
					}	
				}	

				key.nodeName.length = 0;
				key.parentID = ((HFSPlusCatalogFolder*)record)->folderID;
				key.keyLength = sizeof(key.parentID) + sizeof(key.nodeName.length);
				removeFromBTree(volume->catalogTree, (BTKey*)(&key));
			}

			parentFolder->folderCount--;
			volume->volumeHeader->folderCount--;
		}
		parentFolder->valence--;
		updateCatalog(volume, (HFSPlusCatalogRecord*) parentFolder);
		updateVolume(volume);

		free(record);
		free(parentFolder);

		return TRUE;
	} else {
		free(parentFolder);
		ASSERT(FALSE, "cannot find record");
		return FALSE;
	}
}