added elips file to edit mlx

Documentation/utils/util.el

@@ -0,0 +1,36 @@
+
+(defun edit-mlx (mlxfilename editfunc)
+  "Unpack mlxfilename in a the directory Temp (should be created
+apriori), run the function editfunc in the matlab/document.xml
+file, pack the result again and delete the unpacked files in
+Temp."
+  (let ((command-str ""))
+    (setq command-str (concat "unzip " mlxfilename " -d Temp\n"))
+    (shell-command command-str)
+    (with-temp-buffer
+      (insert-file "Temp/matlab/document.xml")
+      (beginning-of-buffer)
+      (funcall editfunc)
+      (write-region (point-min) (point-max) "Temp/matlab/document.xml")
+      )
+    (setq command-str "cd Temp \n")
+    (setq command-str (concat command-str "zip -r temp.mlx * \n"))
+    (setq command-str (concat command-str "mv temp.mlx .. \n"))
+    (setq command-str (concat command-str "cd .. \n"))
+    (setq command-str (concat command-str "rm -r Temp/* \n"))
+    (shell-command command-str)
+    )
+  )
+
+
+;; example
+(defun editfunc ()
+  (while (re-search-forward (rx "Introduction") nil t)
+    (replace-match "hello")
+    )
+  )
+
+;; example
+;; (edit-and-compress "tutorial_2_changing_control_protocol_live.mlx" #'editfunc)
+
+