Topic: end while loop when string search results in nil

[dubb]

I am trying to end a while loop when vl-string-search is nil. Not sure what I'm missing here.

Code: [Select]

(defun c:foo( / txt)
;(setq txt (dos_editbox "Editor" "Enter some text" ""))
(setq txt "alpha\tbravo\ncharlie\tdelta")
(while
(princ (substr txt 1 (vl-string-search "\t" txt)))
(setq txt (substr txt (+ 2 (vl-string-search "\t" txt)) (strlen txt)))
(princ(substr txt 1 (vl-string-search "\n" txt)))
(setq txt (substr txt (+ 2 (vl-string-search "\n" txt)) (strlen txt)))
  )
  (princ)
  )

[ribarm]

You probably wanted to print on text screen something like this :

Code: [Select]

(defun c:foo ( / txt )
 ;(setq txt (dos_editbox "Editor" "Enter some text" ""))
  (setq txt "alpha\tbravo\ncharlie\tdelta")
  (while (or (vl-string-search "\t" txt) (vl-string-search "\n" txt))
    (if (vl-string-search "\t" txt)
      (progn
        (princ (strcat "\n" (substr txt 1 (vl-string-search "\t" txt))))
        (setq txt (substr txt (+ 2 (vl-string-search "\t" txt))))
      )
      (princ (strcat "\n" txt))
    )
    (if (vl-string-search "\n" txt)
      (progn
        (princ (strcat "\n" (substr txt 1 (vl-string-search "\n" txt))))
        (setq txt (substr txt (+ 2 (vl-string-search "\n" txt))))
      )
      (princ (strcat "\n" txt))
    )
  )
  (princ)
)


[dubb]

purrrfect! Thank you bro!

Here is my script.
Quickdwgprops
Will add custom dwgprops by copying two columns on a spreadsheet and pasting into the dialog box.
Free to distribute and modify.
Dependencies from dos_lib required.

Code: [Select]

;quickdwgprops
;remove all custom dwgprops
;copy two columns from spreadsheet
;paste into notes dialogue box
;dependencies: dos_lib

(defun c:qdw ( / txt name value)
 (cd:DWG_RemoveCustomProp (cd:ACX_ADoc) T)
 (setq txt (dos_editbox "Editor" "Enter some text" "")) ;dos_lib depencies
 ; (setq txt "alpha\tbravo\ncharlie\tdelta")
  (while (or (vl-string-search "\t" txt) (vl-string-search "\n" txt))
    (if (vl-string-search "\t" txt)
      (progn
        (setq name (substr txt 1 (vl-string-search "\t" txt)))
        (setq txt (substr txt (+ 2 (vl-string-search "\t" txt))))
      )
      (setq name txt)
    );end if
    (if (vl-string-search "\n" txt)
      (progn
        (setq value (substr txt 1 (vl-string-search "\n" txt)))
        (setq txt (substr txt (+ 2 (vl-string-search "\n" txt))))
      )
      (setq value txt)
    );end if
    (addp name value)
  );end while
 
  (princ)
)

;add dwgprops function
(defun addp (FieldName FieldValue / acadObj acDoc acDocSumInfo)
(vl-load-com)
(setq acadObj (vlax-get-acad-object))
(setq acDoc (vlax-get-property acadObj 'ActiveDocument))
(setq acDocSumInfo (vlax-get-property acDoc 'SummaryInfo))
(vlax-invoke-method acDocSumInfo 'AddCustomInfo FieldName FieldValue)
  )



; =========================================================================================== ;
; Usuwa wlasciwosci uzytkownika / Removes custom drawing properties                           ;
;  Doc  [VLA-Object] - document / document                                                    ;
;  Mode [LIST/T] - LIST = lista wlasciwosci do usuniecia / list of properties to remove       ;
;                  T    = usuwa wszystkie wlasciwosci / removes all properites                ;
; ------------------------------------------------------------------------------------------- ;
; (cd:DWG_RemoveCustomProp (cd:ACX_ADoc) (list "One" "Two"))                                  ;
; =========================================================================================== ;
(defun cd:DWG_RemoveCustomProp (Doc Mode / si)
  (setq si (vla-get-SummaryInfo Doc))
  (if (listp Mode)
    (foreach % Mode
      (vl-catch-all-apply
        (quote vla-RemoveCustomByKey)
        (list si %)
      )
    )
    (foreach % (mapcar (quote car) (cd:DWG_GetCustomProp Doc))
      (vla-RemoveCustomByKey si %)
    )
  )
)

; =========================================================================================== ;
; Aktywny dokument / Active document                                                          ;
; =========================================================================================== ;
(defun cd:ACX_ADoc ()
  (or
    *cd-ActiveDocument*
    (setq *cd-ActiveDocument*
      (vla-get-ActiveDocument (vlax-get-acad-object))
    )
  )
  *cd-ActiveDocument*
)

; =========================================================================================== ;
; Lista wlasciwosci uzytkownika / Custom drawing properties                                   ;
;  Doc [VLA-Object] - document / document                                                     ;
; ------------------------------------------------------------------------------------------- ;
; (cd:DWG_GetCustomProp (cd:ACX_ADoc))                                                        ;
; =========================================================================================== ;
(defun cd:DWG_GetCustomProp (Doc / si n k v lst)
  (setq si (vla-get-SummaryInfo Doc)
        n (vla-NumCustomInfo si)
  )
  (while (> n 0)
    (vla-GetCustomByIndex si (- n 1) 'k 'v)
    (setq lst (cons (cons k v) lst)
          n (1- n)
    )
  )
  lst
)

You probably wanted to print on text screen something like this :

Code: [Select]

(defun c:foo ( / txt )
 ;(setq txt (dos_editbox "Editor" "Enter some text" ""))
  (setq txt "alpha\tbravo\ncharlie\tdelta")
  (while (or (vl-string-search "\t" txt) (vl-string-search "\n" txt))
    (if (vl-string-search "\t" txt)
      (progn
        (princ (strcat "\n" (substr txt 1 (vl-string-search "\t" txt))))
        (setq txt (substr txt (+ 2 (vl-string-search "\t" txt))))
      )
      (princ (strcat "\n" txt))
    )
    (if (vl-string-search "\n" txt)
      (progn
        (princ (strcat "\n" (substr txt 1 (vl-string-search "\n" txt))))
        (setq txt (substr txt (+ 2 (vl-string-search "\n" txt))))
      )
      (princ (strcat "\n" txt))
    )
  )
  (princ)
)