fix #35

tktermwidget/widgets.py

@@ -1,7 +1,7 @@
 """Tkinter Terminal widget"""
 from __future__ import annotations
 
-from os import getcwd
+from os import getcwd, chdir, path
 from pathlib import Path
 from platform import system
 from subprocess import PIPE, Popen
@@ -179,7 +179,9 @@ def execute(self, _: Event) -> str:
         cmd = self.text.get(f"{self.index}.0", "end-1c")
         # Split the command from the line also strip
         cmd = cmd.split(SIGN)[-1].strip()
-        self.index += 1  # if some "if" statement return "break"
+
+        # TODO: get rid off all return "break" in if statements 
+        #       use the flag leave: bool instead of 
 
         if cmd.endswith(self.longsymbol):
             self.longcmd += cmd.split(self.longsymbol)[0]
@@ -209,6 +211,15 @@ def execute(self, _: Event) -> str:
             return "break"
         elif cmd == "exit":
             self.master.quit()
+        elif cmd.startswith("cd"): # TAG: is all platform use cd...?
+            if cmd == "cd..":
+                chdir(path.abspath(path.join(getcwd(), "..")))
+            else:
+                chdir(cmd.split()[-1])
+            self.newline()
+            self.directory()
+            return "break"
+
 
         # Set the insert position is at the end
         self.text.mark_set("insert", f"{self.index}.end")
@@ -229,9 +240,9 @@ def execute(self, _: Event) -> str:
         # The following needs to be put in an after so the kill command works
 
         # Check if the command was successful
-        output: tuple = self.current_process.communicate()
-        returnlines: str = output[0]
-        errors: str = output[1]
+        returnlines: str = ""
+        errors: str = ""
+        returnlines, errors = self.current_process.communicate()
         returncode = self.current_process.returncode
         self.current_process = None
 
@@ -247,11 +258,15 @@ def execute(self, _: Event) -> str:
         # Update the text and the index
         self.index = int(self.text.index("insert").split(".")[0])
         self.update()
+        print(self.index)
+
+        del returnlines, errors,  returncode, cmd
         return "break"  # Prevent the default newline character insertion
 
     def newline(self) -> None:
         """Insert a newline"""
         self.text.insert("insert", "\n")
+        self.index += 1
 
     def update(self) -> str:
         """Update the text widget or the command has no output"""