experimenting with entry

src/rt/rfwfs/entry.ts

@@ -0,0 +1,89 @@
+import rfwfs_search from "./index"
+
+const enum EntryType {
+	Directory,
+	File
+}
+
+const enum Permissions {
+	r,
+	w,
+	rw,
+	none
+}
+
+type Files<T> = Entry<T>[]
+type File = string
+
+interface EntryListManipulate {
+	push: <T extends Entry<T>>(entry: Entry<T>) => boolean,
+	pop: <T extends Entry<T>>(file_name: string) => Entry<T> | undefined,
+	sort: () => void,
+}
+
+interface EntryList<T> extends EntryListManipulate {
+	readonly tree: Files<T>
+}
+
+interface Entry<T = File> {
+	readonly inner: EntryList<T>,
+	readonly name: string,
+	readonly type: EntryType,
+	readonly timestamp: number,
+	readonly permissions: Permissions,
+}
+
+function rfwfs_entry_trait<T extends Entry<T>>(): EntryList<T> {
+	const trait = {} as EntryList<T>
+	trait.sort = function() {
+		this.tree.sort((a,z) => a.name.localeCompare(z.name))
+	}
+	trait.push = function(entry) {
+		const no_duplicates = rfwfs_search.binary_fs_name(this.tree, entry.name)
+		if (!no_duplicates) {
+			this.tree.push(entry)
+			this.sort()
+			return true
+		}
+		return false
+	}
+	trait.pop = function(file_name) {
+		const file_search = rfwfs_search.binary_fs_name(this.tree, file_name)
+		if (file_search) {
+			this.tree.splice(file_search.binary_index, 1)
+			return file_search.item
+		}
+		return
+	}
+	return trait
+}
+
+function rfwfs_new_entry_tree<T>(files: Files<T>) {
+
+}
+
+function rfwfs_new_entry<T extends EntryList<T>>(
+	name: string,
+	inner: T,
+	permissions: Permissions,
+	timestamp: number = Math.floor(Date.now()/1000)
+): Entry<T> {
+	return {
+		type: typeof inner == "object" ? EntryType.Directory : EntryType.File,
+		timestamp: timestamp,
+		name: name,
+		permissions: permissions,
+		inner: inner,
+	}
+}
+
+export {
+	rfwfs_entry_trait,
+	rfwfs_new_entry,
+	EntryType,
+	Permissions,
+	type EntryList,
+	type Entry,
+	type Files,
+	type File,
+}