Added basic autocompletion for zsh. (#34)

README.md

@@ -64,6 +64,21 @@ cp completion/kubie.fish ~/.config/fish/completions/
 
 Then reopen fish or source the file.
 
+
+#### Zsh
+
+Autocomplete with Zsh can either be installed by sourcing the file eg.:
+
+```bash
+source ./completion/kubie.zsh
+```
+
+Or by adding the file to one of your [`fpath`](https://zsh.sourceforge.io/Doc/Release/Functions.html#Autoloading-Functions) folders, for instance `~/.zsh`, and making sure [zsh autocompletion is initialized](https://zsh.sourceforge.io/Doc/Release/Completion-System.html#Initialization) ([for instance](https://docs.brew.sh/Shell-Completion#configuring-completions-in-zsh)):
+```bash
+cp ./completion/kubie.zsh ~/.zsh/_kubie
+```
+
+
 ## Usage
 Selectable menus will be available when using `kubie ctx` and `kubie ns`.
 

completion/kubie.zsh

@@ -0,0 +1,38 @@
+#compdef kubie
+
+function _kubie {
+    local -a subcmds
+    local context state line
+
+    _arguments -C \
+        '1: :->param1' \
+        '2: :->param2' \
+        '3: :->param3' && return 0
+
+    case $state in
+        param1)
+            subcmds=('ctx' 'edit' 'edit-config' 'exec' 'help' 'info' 'lint' 'ns')
+            _describe 'command' subcmds
+            ;;
+        param2)
+            case $line[1] in
+                ctx|edit|exec)
+                    subcmds=(${(f)"$(kubie ctx)"})
+                    _describe 'context' subcmds
+                    ;;
+                ns)
+                    subcmds=(${(f)"$(kubie ns)"})
+                    _describe 'namespace' subcmds
+                    ;;
+            esac
+            ;;
+        param3)
+            if [[ $line[1] == 'exec' ]]; then
+                subcmds=(${(f)"$(kubie exec $line[2] default kubectl get namespaces | tail -n+2 | awk '{print $1}')"})
+                _describe 'namespace' subcmds
+            fi
+            ;;
+    esac
+}
+
+compdef _kubie kubie