Find & Replace Attribute Values --Need lisp

hai all

I am a University student and a part time worker

Pls help me with a Auto cad lisp programme which find and replaces attribute values in autocad attributes

eg if the VALUES of different attributes are CAXXXXYYYY001,CAXXXXYYYY002,CAXXXXYYYY003 etc

then

I would like to replace 2nd letter 'C' with letter 'D'

thus it becomes

CDXXXXYYYY001,CDXXXXYYYY002,CDXXXXYYYY003 etc

already got one .exe programme but system security does not allow me to install the programme to my system thats y I badly need a lisp

kindly help

thanks in advance

Merlin Menaco

hai all

 

I am a University student and a part time worker

 

Pls help me with a Auto cad lisp programme which find and replaces attribute values in autocad attributes

 

eg if the VALUES of different attributes are CAXXXXYYYY001,CAXXXXYYYY002,CAXXXXYYYY003 etc

then

I would like to replace 2nd letter 'C' with letter 'D'

thus it becomes

CDXXXXYYYY001,CDXXXXYYYY002,CDXXXXYYYY003 etc

 

already got one .exe programme but system security does not allow me to install the programme to my system thats y I badly need a lisp

 

kindly help

 

thanks in advance

 

Merlin Menaco

This will work just for attributes that starts with "CA"

For other cases change attribute patterns inside the code

;; cav.lsp
;; change attribute values by given pattern
(defun C:CAV (/ *error* adoc atts cnt layer locked newvalue oldvalue)
;; error trapping function
(defun *error* (msg)
 (if (and msg
   (vl-position
     msg
     '("console break"
"Function cancelled"
"quit / exit abort"
)
     )
   )
    (princ (strcat "Error >>> " (princ msg)))
    (princ msg)
    )

 (vla-endundomark
   (vla-get-activedocument
     (vlax-get-acad-object))
   ) 
    )

 (setq adoc (vla-get-activedocument
     (vlax-get-acad-object))
       )

 (vla-startundomark adoc)

 (setq cnt 0)

 ;; loop through all layouts

 (vlax-for layout  (vla-get-layouts adoc)
   (vlax-for obj  (vla-get-block layout)

     (if (and (eq "AcDbBlockReference" (vla-get-objectname obj))
    (eq :vlax-true (vla-get-hasattributes obj)))
(progn
  (setq layer (vla-item (vla-get-layers adoc) (vla-get-layer obj)))
  (if (eq :vlax-true (vla-get-lock layer))
    (progn
      (setq locked (cons (vla-get-layer obj) locked))
      (vla-put-lock layer :vlax-false))   ;<--unlock layer if locked
    )
  (setq atts (vlax-invoke obj 'GetAttributes))
  (foreach att atts
    (setq oldvalue (vla-get-textstring att)) ;<--get attribute value
    (if (wcmatch oldvalue "CA*") ;<-- CA* is attribute pattern, change to suit
      (progn
 (setq cnt (1+ cnt))    ;<--increment counter
 (setq newvalue (vl-string-subst "D" "A" oldvalue)) ;<--change patterns(letters) to suit
 (vla-put-textstring att newvalue) ;<--set new attribute value
 (vla-update att)
 (princ (strcat "\n\t\t\t\t\>> Attribute value "
         (vl-princ-to-string oldvalue)
         " changed on: "
         (vl-princ-to-string newvalue)))
 )
      )
    )
  (vla-update obj)
  )
)
     )
   )
 ;; turn all layers state back 
(if locked
 (foreach layer  locked
   (vla-put-lock
     (vla-item (vla-get-layers adoc) layer)
     :vlax-true))
 )
(setq locked nil)
(alert (strcat "Done. Processed "
       (itoa cnt)
       " attributes on all layouts"))
(*error* nil)
(princ)
 )
(prompt"\n\t\t\t\tType CAV to change attributes by pattern")
(princ)
(vl-load-com);_end of code

~'J'~

Dude you have posted the exscat same thing in 3 different thread...not cool

Dude you have posted the exscat same thing in 3 different thread...not cool

Agreed

~'J'~

I have a simillar question to the one that merlin had. Where i differ is that i have several blocks in a model that all have the attribute tag "COMMENTS". What i would like to be able to do is have the lisp, after selecting a particular block, give the option at the command line of "LKG. NORTH, LKG. SOUTH, LKG. EAST, LKG. WEST" and then the user would hit "N" for lkg.north "S" for lkg.south, etc and change the "COMMENTS" value to that. Or just enter in whatever they wanted if they need something other than that. Also, if possible, if the "COMMENTS" tag already has a value, could it retain the value and just add the "LKG. NORTH" value to the front of the existing tag whereby "1234" would become "LKG. NORTH;1234". I apologize if this has already been posted or is asking too much, ive tried my hand at it for a few days now and have gotten nowhere as it is far out of the realm of my abilities. Thanks in advance for any help!

Give this a shot:

(defun c:attupd (/ i ss ent att)
 (vl-load-com)
 (or *def_com* (setq *def_com* "NORTH")) ;; First-time Default

 (if (and (setq i -1 ss (ssget "_:L" '((0 . "INSERT") (66 . 1))))
          (not (initget "NORTH SOUTH EAST WEST"))
          (setq *def_com* (cond ((getkword (strcat "\nNorth/South/East/West? <" *def_com* "> : ")))
                                (*def_com*))))            
   
   (while (setq ent (ssname ss (setq i (1+ i))))

     (foreach att (vlax-invoke (vlax-ename->vla-object ent) 'GetAttributes)

       (and (eq "COMMENTS" (strcase (vla-get-TagString att)))
            (vla-put-TextString att (strcat "LKG. " *def_com* (vla-get-TextString att)))))))
 
 (princ))

Lee Mac you never cease to amaze, PERFECT!!! I definitely owe you a pint or 4. Next time im in or around London ill let ya know!

Lee Mac you never cease to amaze, PERFECT!!! I definitely owe you a pint or 4. Next time im in or around London ill let ya know!

You're welcome Jaylo - anytime mate