Add files via upload

commands/cmd_cd.py

@@ -0,0 +1,46 @@
+# commands/cmd_cd.py
+import os
+from colorama import Fore
+
+class CdCommand:
+    def __init__(self, files_dir, shell_ref, target_dir):
+        # files_dir = ~/m5rcode/files
+        self.files_dir   = files_dir
+        self.project_root = os.path.dirname(files_dir)  # ~/m5rcode
+        self.shell       = shell_ref[0]                # the M5RShell instance
+        self.target      = target_dir.strip()
+
+    def run(self):
+        if not self.target or self.target == '.':
+            # Stay in current directory
+            return
+
+        # Compute new absolute path
+        candidate = os.path.abspath(
+            os.path.normpath(
+                os.path.join(self.shell.cwd, self.target)
+            )
+        )
+
+        # If they typed '..' from files_dir, allow up to project_root
+        if self.target == '..':
+            # from files_dir → project_root
+            if self.shell.cwd == self.files_dir:
+                new_path = self.project_root
+            # from any subfolder of files_dir → one level up, but not above project_root
+            else:
+                new_path = os.path.dirname(self.shell.cwd)
+                if not new_path.startswith(self.project_root):
+                    new_path = self.project_root
+        else:
+            new_path = candidate
+
+        # Check it stays within project_root
+        if not new_path.startswith(self.project_root):
+            print(Fore.RED + "Access denied: You cannot leave the m5rcode project.")
+            return
+
+        if os.path.isdir(new_path):
+            self.shell.cwd = new_path
+        else:
+            print(Fore.RED + f"No such directory: {self.target}")