feat: add neofetch, fix buffer backspacing

src/program/Neofetch.ts

@@ -0,0 +1,29 @@
+import type { SimpleStream } from '../utils/SimpleStream'
+import { Program } from './Program'
+
+export class Neofetch extends Program {
+    async Exec(_: SimpleStream<string>, stdout: SimpleStream<string>, __: string[]): Promise<number> {
+        const art = `++++++++++++++++++++++++++++++
+++++++++++++++++++++++++++++++
+++++++++++++++++++++++++++++++
+++++++++++++++++++++++++++++++
+++++++++++++++++++++++++++++++
+++++++++++++++++++++++++++++++
++++++++++++++++++++++;..:+++++
+++++            ++         +++
+++++++++.   +++++    +++++++++
+++++++++.   +++++:    ++++++++
+++++++++.   ++++++;       ++++
+++++++++.   ++++++++++.    +++
+++++++++.   +++++.++++++   ;++
+++++++++.   +++++          +++
+++++++++;...++++++;     ;+++++
+++++++++++++++++++++++++++++++`
+
+        art.split("\n").forEach(line => {
+            stdout.emit(`${line}\n`)
+        })
+
+        return 0
+    }
+}

src/shell/Wush.ts

@@ -5,6 +5,7 @@ import { Clear } from '../program/Clear'
 import { Eval } from '../program/Eval'
 import { Loadprg } from '../program/Loadprg'
 import { Lsprg } from '../program/Lsprg'
+import { Neofetch } from '../program/Neofetch'
 import { Program } from '../program/Program'
 import { Terminal } from '../terminal/Terminal'
 import { EventBroadcaster } from '../utils/EventBroadcaster'
@@ -46,6 +47,7 @@ export class Wush extends Shell {
         this.programs['eval'] = new Eval()
         this.programs['loadprg'] = new Loadprg(this)
         this.programs['lsprg'] = new Lsprg(this)
+        this.programs['neofetch'] = new Neofetch()
 
         this.stdout.on(data => this.WriteEscapedString(data))
         this.Prompt()
@@ -91,8 +93,8 @@ export class Wush extends Shell {
         console.log(this.buffer)
     }
 
-    RemoveLastCharsFromBuffer(amount: number) {
-        this.buffer.splice(this.buffer.length - amount, amount)
+    RemoveCharFromBuffer(amount: number, index: number) {
+        this.buffer.splice(index - amount, amount)
         this.bufferPos -= amount
 
         console.log(this.buffer)
@@ -181,9 +183,22 @@ export class Wush extends Shell {
                         break
 
                     this.terminal.RemoveCell()
-                    this.RemoveLastCharsFromBuffer(1)
+                    this.RemoveCharFromBuffer(1, this.bufferPos)
+                    // this.buffer.splice(this.bufferPos, 1)
                     this.terminal.MoveCursor(-1, 0)
                     break
+                case 'Delete':
+                    if (this.bufferPos >= this.buffer.length || this.buffer.length <= 0)
+                        break
+
+                    this.bufferPos++
+                    this.terminal.MoveCursor(1, 0)
+                    this.terminal.RemoveCell()
+                    this.RemoveCharFromBuffer(1, this.bufferPos)
+                    this.terminal.MoveCursor(-1, 0)
+
+                    console.log(this.bufferPos)
+                    break
                 case 'Enter':
                     // send the buffer to stdin if an exec is running
                     if (this.execExitCode === -1) {