feat: add some utilities

src/program/Clear.ts

@@ -0,0 +1,10 @@
+import type { SimpleStream } from '../utils/SimpleStream'
+import { Program } from './Program'
+
+export class Clear extends Program {
+    async Exec(_: SimpleStream<string>, stdout: SimpleStream<string>, __: string[]): Promise<number> {
+        stdout.emit('\f')
+
+        return 0
+    }
+}

src/program/Eval.ts

@@ -0,0 +1,17 @@
+import type { SimpleStream } from '../utils/SimpleStream'
+import { Program } from './Program'
+
+export class Eval extends Program {
+    async Exec(_: SimpleStream<string>, stdout: SimpleStream<string>, args: string[]): Promise<number> {
+        const javascript = args.slice(1).join(' ')
+
+        try {
+            eval(javascript)
+        } catch (e) {
+            stdout.emit(`${String(e)}\n`)
+            return 1
+        }
+
+        return 0
+    }
+}

src/program/Loadprg.ts

@@ -0,0 +1,29 @@
+import type { Wush } from '../shell/Wush'
+import type { SimpleStream } from '../utils/SimpleStream'
+import { Program } from './Program'
+
+export class Loadprg extends Program {
+    // private wush: Wush
+
+    constructor(_: Wush) {
+        super()
+        // this.wush = wush
+    }
+
+    async Exec(_: SimpleStream<string>, stdout: SimpleStream<string>, args: string[]): Promise<number> {
+        stdout.emit('Not implemented yet.\n')
+        return 0
+
+        const javascript = args.slice(1).join(' ')
+
+        try {
+            eval(javascript)
+        } catch (e) {
+            stdout.emit(`${String(e)}\n`)
+            stdout.emit(`${String((e as Error).stack)}\n`)
+            return 1
+        }
+
+        return 0
+    }
+}

src/program/Lsprg.ts

@@ -0,0 +1,19 @@
+import type { Wush } from '../shell/Wush'
+import type { SimpleStream } from '../utils/SimpleStream'
+import { Program } from './Program'
+
+export class Lsprg extends Program {
+    private wush: Wush
+
+    constructor(wush: Wush) {
+        super()
+        this.wush = wush
+    }
+
+    async Exec(_: SimpleStream<string>, stdout: SimpleStream<string>, __: string[]): Promise<number> {
+        for (const program in this.wush.GetPrograms())
+            stdout.emit(`${program}\n`)
+
+        return 0
+    }
+}

src/program/Program.ts

@@ -0,0 +1,5 @@
+import type { SimpleStream } from "../utils/SimpleStream";
+
+export abstract class Program {
+    abstract Exec(stdin: SimpleStream<string>, stdout: SimpleStream<string>, args: string[]): Promise<number>
+}

src/program/clear.ts

@@ -1,7 +0,0 @@
-import type { SimpleStream } from '../utils/SimpleStream'
-
-export const ClearExec = async (stdin: SimpleStream<string>, stdout: SimpleStream<string>): Promise<number> => {
-    stdout.emit("\f")
-
-    return 0
-}

src/program/stdlibwsh.ts

@@ -1,8 +0,0 @@
-// stdlibwsh - (st)andard (lib)rary (w)eb (sh)ell
-// - céčkoismy at their peak
-
-import type { SimpleStream } from '../utils/SimpleStream'
-
-export const io = {
-
-}