executable completion

Author: daviidy

app/InputHandler.js

@@ -1,3 +1,5 @@
+const path = require('path');
+const fs = require("fs");
 class InputHandler {
     constructor(readline) {
         this.readline = readline;
@@ -23,6 +25,7 @@ class InputHandler {
                         this.readline.write(this.inputBuffer); // Write the autocompleted input
                     } else if (suggestions.length > 1) {
                         console.log('\n' + suggestions.join(' '));
+                        this.readline.write(null, { ctrl: true, name: 'u' });
                         this.readline.prompt();
                         this.readline.write(this.inputBuffer); // Reprint the current input
                     } else {
@@ -43,12 +46,32 @@ class InputHandler {
         });
     }
 
+    isExecutable(stats) {
+        return (stats.mode & 0o111) !== 0;
+    }
+
     getSuggestions(input) {
         const suggestions = [];
 
         const commands = ['echo', 'exit', 'pwd', 'cd', 'type'];
         suggestions.push(...commands.filter((cmd) => cmd.startsWith(input)));
 
+        const pathDirs = process.env.PATH.split(path.delimiter);
+        for (const dir of pathDirs) {
+            try {
+                const files = fs.readdirSync(dir); // Read files in the directory
+                for (const file of files) {
+                    const filePath = path.join(dir, file);
+                    const stats = fs.statSync(filePath);
+                    if (file.startsWith(input) && stats.isFile() && this.isExecutable(stats)) {
+                        if(!suggestions.includes(file)) suggestions.push(file);
+                    }
+                }
+            } catch (err) {
+                continue;
+            }
+        }
+
         return suggestions;
     }
 }