implement shell command interface and add basic commands (echo, ls, pwd, cd, touch, cat, rm) with syscall integration

2025-01-23 15:22:42 -03:00
parent 2817165386
commit f39333cae6
18 changed files with 519 additions and 46 deletions
--- a/src/shell/FileSystem.ts
+++ b/src/shell/FileSystem.ts
@@ -0,0 +1,109 @@
+interface INode {
+    name: string;
+    isDirectory: boolean;
+    content?: string;
+    children?: Map<string, INode>;
+}
+
+export class FileSystem {
+    private root: INode;
+
+    constructor() {
+        console.log('[FileSystem] Initializing new filesystem');
+        this.root = {
+            name: '/',
+            isDirectory: true,
+            children: new Map()
+        };
+    }
+
+    createDirectory(path: string): void {
+        console.log(`[FileSystem] Creating directory: ${path}`);
+        const parts = path.split('/').filter(p => p);
+        let current = this.root;
+
+        for (const part of parts) {
+            if (!current.children!.has(part)) {
+                console.log(`[FileSystem] Creating new directory node: ${part}`);
+                current.children!.set(part, {
+                    name: part,
+                    isDirectory: true,
+                    children: new Map()
+                });
+            }
+            current = current.children!.get(part)!;
+        }
+    }
+
+    writeFile(path: string, content: string): void {
+        console.log(`[FileSystem] Writing file: ${path}`);
+        const parts = path.split('/').filter(p => p);
+        const fileName = parts.pop()!;
+        let current = this.root;
+
+        for (const part of parts) {
+            if (!current.children!.has(part)) {
+                console.log(`[FileSystem] Creating parent directory: ${part}`);
+                this.createDirectory(part);
+            }
+            current = current.children!.get(part)!;
+        }
+
+        current.children!.set(fileName, {
+            name: fileName,
+            isDirectory: false,
+            content
+        });
+        console.log(`[FileSystem] File written: ${fileName}`);
+    }
+
+    listDirectory(path: string): string[] {
+        console.log(`[FileSystem] Listing directory: ${path}`);
+        const parts = path.split('/').filter(p => p);
+        let current = this.root;
+
+        for (const part of parts) {
+            if (!current.children!.has(part)) return [];
+            current = current.children!.get(part)!;
+        }
+
+        const result = Array.from(current.children!.keys());
+        console.log(`[FileSystem] Found ${result.length} entries`);
+        return result;
+    }
+
+    readFile(path: string): string | null {
+        console.log(`[FileSystem] Reading file: ${path}`);
+        const parts = path.split('/').filter(p => p);
+        const fileName = parts.pop()!;
+        let current = this.root;
+
+        for (const part of parts) {
+            if (!current.children!.has(part)) return null;
+            current = current.children!.get(part)!;
+        }
+
+        const file = current.children!.get(fileName);
+        if (!file || file.isDirectory) {
+            console.log(`[FileSystem] File not found or is directory: ${path}`);
+            return null;
+        }
+        console.log(`[FileSystem] File read successfully: ${path}`);
+        return file.content!;
+    }
+
+    deleteFile(path: string): void {
+        console.log(`[FileSystem] Deleting file: ${path}`);
+        const parts = path.split('/').filter(p => p);
+        const fileName = parts.pop()!;
+        let current = this.root;
+
+        for (const part of parts) {
+            if (!current.children!.has(part)) return;
+            current = current.children!.get(part)!;
+        }
+
+        current.children!.delete(fileName);
+        console.log(`[FileSystem] File deleted: ${path}`);
+    }
+}