no more react

src/components/client/shell/fs/fn.ts

@@ -0,0 +1,75 @@
+import { Entry, EntryType, fs, type FsEntrySignature } from "./fs"
+
+let working_dir = ["/", "home", "user"]
+
+function get_working_dir_name(): string {
+	return working_dir[working_dir.length-1]
+}
+
+function get_working_dir_name_full(): string {
+	const w_dir_clone = [...working_dir]
+	const root = w_dir_clone.shift()
+	if (root) {
+		return root+w_dir_clone.join("/")
+	}
+	return "shift-error"
+}
+
+const enum SetDirStatus {
+	Valid,
+	NotFound,
+	NotADirectory
+}
+interface FsIterEntry {
+	readonly entry: FsEntrySignature | null,
+	readonly status: SetDirStatus
+}
+function iter_fs_to_goal(w_dir_clone: string[]): FsIterEntry {
+	let next_iter = fs[0]
+
+	for (const w_dir of w_dir_clone) {
+		if (w_dir === "/") { continue }
+		if (next_iter.inner) {
+			const found = next_iter.inner.find(entry => entry.name === w_dir)
+
+			if (!found) {
+				return { entry: null, status: SetDirStatus.NotFound }
+			}
+			if (found.type !== EntryType.Directory) {
+				return { entry: null, status: SetDirStatus.NotADirectory }
+			}
+			if (found.name === w_dir_clone[w_dir_clone.length-1]) {
+				return { entry: next_iter, status: SetDirStatus.Valid }
+			} else {
+				next_iter = found.inner as FsEntrySignature
+			}
+		}
+	}
+	return { entry: null, status: SetDirStatus.NotFound }
+}
+
+function set_working_dir(name: string): SetDirStatus {
+	if (name === ".") { return SetDirStatus.Valid }
+
+	const w_dir_clone = [...working_dir]
+	if (name === "..") { w_dir_clone.pop() } else { w_dir_clone.push(name) }
+
+	const iter_status = iter_fs_to_goal(w_dir_clone)
+	if (iter_status.status === SetDirStatus.Valid) {
+		working_dir = w_dir_clone
+	}
+	return iter_status.status
+}
+
+function working_dir_entries() {
+	const w_dir_clone = [...working_dir]
+	const iter_status = iter_fs_to_goal(w_dir_clone)
+
+}
+
+export {
+	get_working_dir_name,
+	get_working_dir_name_full,
+	set_working_dir,
+	SetDirStatus
+}