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chgtext.lsp
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Wrap
Lisp/Scheme
|
1988-07-15
|
3KB
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66 lines
; **********************************************************************
; CHGTEXT.LSP
; This program will replace every occurrence of an "old string" with a
; "new string". You will be prompted to select the text you wish
; to change. Then you will be asked to enter the "old string" and
; the "new string". After the text has been changed, the total number
; of changed lines is displayed.
; **********************************************************************
(defun chgterr (s)
(if (/= s "Function cancelled") ; If an error (such as CTRL-C) occurs
(princ (strcat "\nError: " s)) ; while this command is active...
)
(setq p nil) ; Free selection set
(setq *error* olderr) ; Restore old *error* handler
(princ)
)
(defun C:CHGTEXT (/ p l n e os as ns st s nsl osl sl si chf chm olderr)
(setq olderr *error* ; Initialize variables
*error* chgterr
chm 0)
(setq p (ssget)) ; Select objects
(if p (progn ; If any objects selected
(while (= 0 (setq osl (strlen (setq os (getstring t "\nOld string: ")))))
(princ "Null input invalid")
)
(setq nsl (strlen (setq ns (getstring t "\nNew string: "))))
(setq l 0 n (sslength p))
(while (< l n) ; For each selected object...
(if (= "TEXT" ; Look for TEXT entity type (group 0)
(cdr (assoc 0 (setq e (entget (ssname p l))))))
(progn
(setq chf nil si 1)
(setq s (cdr (setq as (assoc 1 e))))
(while (= osl (setq sl (strlen
(setq st (substr s si osl)))))
(if (= st os)
(progn
(setq s (strcat (substr s 1 (1- si)) ns
(substr s (+ si osl))))
(setq chf t) ; Found old string
(setq si (+ si nsl))
)
(setq si (1+ si))
)
)
(if chf (progn ; Substitute new string for old
(setq e (subst (cons 1 s) as e))
(entmod e) ; Modify the TEXT entity
(setq chm (1+ chm))
))
)
)
(setq l (1+ l))
)
))
(princ "Changed ") ; Print total lines changed
(princ chm)
(princ " text lines.")
(terpri)
(setq *error* olderr) ; Restore old *error* handler
(princ)
)