Updating drawing layer and file names lisp

I have a large set of drawings that I would like to do the following to:

• Save drawings as a new file name
  
• Rename some layers in each drawing
  
• Update the drawing name that is located as plain text in the drawing.
  

I have a .csv that has the following (with a list of all the affected drawings):

OLDFILENAME NEWFILENAME OLDLAYERNAME NEWLAYERNAME

This is what I have so far, am I on the right track? How do I go about using the csv data to find/replace the text/in the drawing and save it as the new file name. I would like to do this as a batch processes if possible.

;;-----------------------=={ Read CSV }==---------------------;; ;;                                                            ;; ;;  Parses a CSV file into a matrix list of cell values.      ;; ;;------------------------------------------------------------;; ;;  Author: Lee Mac, Copyright © 2012 - www.lee-mac.com       ;; ;;------------------------------------------------------------;; ;;  Arguments:                                                ;; ;;  filename - filename of CSV file to read                   ;; ;;------------------------------------------------------------;; ;;  Returns:  List of lists - sublist is row of cell values   ;; ;;------------------------------------------------------------;;
;;-------------------------------------------------------------------------------;;

(defun LM:ReadCSV ( filename / _replacequotes _csv->lst file line lst )
   
   (defun _replacequotes ( str / pos )
       (setq pos 0)
       (while (setq pos (vl-string-search  "\"\"" str pos))
           (setq str (vl-string-subst "\"" "\"\"" str pos)
                 pos (1+ pos)
           )
       )
       str
   )

   (defun _csv->lst ( str pos / s )
       (cond
           (   (null (setq pos (vl-string-position 44 str pos)))
               (if (wcmatch str "\"*\"")
                   (list (_replacequotes (substr str 2 (- (strlen str) 2))))
                   (list str)
               )
           )
           (   (wcmatch (setq s (substr str 1 pos)) "\"*\"")
               (cons
                   (_replacequotes (substr str 2 (- pos 2)))
                   (_csv->lst (substr str (+ pos 2)) 0)
               )
           )
           (   (wcmatch s "\"*[~\"]")
               (_csv->lst str (+ pos 2))
           )
           (   (cons s (_csv->lst (substr str (+ pos 2)) 0)))
       )
   )

   (if (setq file (open filename "r"))
       (progn
           (while (setq line (read-line file))
               (setq lst (cons (_csv->lst line 0) lst))
           )
           (close file)
       )
   )
   (reverse lst)
)





;;-------------------------------------------------------------------------------;;



(defun c:updatedwgs ( fromfilename tofilename fromlayername tolayername / data file )
(if
       (and
           (setq file (getfiled "Select CSV File" "" "csv" 16))
           (setq data (LM:ReadCSV file))
       )
       (progn
           (princ "\n(")
           (foreach line data
         (progn
               (princ "\n    ") (prin1 line)
       (setq fromfilename (car line)
        tofilename (cadr line)
        fromlayername (caddr line)
                tolayername (cadddr line)
       )
   )
         
   (if (tblsearch "LAYER" fromlayername) ; found the layer
     (progn
       (command "-layer" "U" fromlayername "")
       (command "rename" "layer" fromlayername tolayername)
     )
   )
         )
           )
           (princ "\n)")
       )
    
    (princ)
)
;;-------------------------------------------------------------------------------;;

Why have you removed the header from my code?

Why have you removed the header from my code?

sorry about that, it was towards the end of the day and i just wanted to copy and paste the main part of what i was working with to get an idea of if i was going in the right direction. I am new to this and will keep it in mind next time.

Here is the source:

http://lee-mac.com/readcsv.html

Please adjust your post and also read my Terms of Use.

Look into using a script possibly easier and don't need lots of coding experience

open dwg1 rename la 1 2 saveas dwg1x close n

open dwg2 rename la 1 2 saveas dwg2x close n

open dwg3 rename la 1 2 saveas dwg3x close n

As a start try this Start bottom corner CMD change to the directory you want eg K: cd\project52

Dir *.dwg >dirlst.txt /b

rename la 1 2 saveas

open drlst.txt in notepad etc copy paste I use word to do search and replace of end of line ^p to code the relevant bits like "open" then "rename la 1 2 saveas" and copy column alt&mouse etc post if you need help. To do example heaps of drawings 1-2mins

I am pretty sure Lee, if you have not offended him to much has a script writer for this type of task.