X-Git-Url: http://git.kpe.io/?a=blobdiff_plain;f=strings.lisp;h=231ad6923fc1788d0ccfc5378a03e232a6cdf404;hb=3e172b14a7f4c73098ab3e1808db2b0bdc0bf986;hp=dce2908125da7f7f0949d16d6427baa8b3fe2c3d;hpb=933317b82c3441aa75c2c5375e25d1929bc80045;p=kmrcl.git

diff --git a/strings.lisp b/strings.lisp
index dce2908..231ad69 100644
--- a/strings.lisp
+++ b/strings.lisp
@@ -7,7 +7,7 @@
 ;;;; Programmer:    Kevin M. Rosenberg
 ;;;; Date Started:  Apr 2000
 ;;;;
-;;;; $Id: strings.lisp,v 1.2 2002/11/04 18:02:13 kevin Exp $
+;;;; $Id: strings.lisp,v 1.5 2002/12/28 07:59:37 kevin Exp $
 ;;;;
 ;;;; This file, part of KMRCL, is Copyright (c) 2002 by Kevin M. Rosenberg
 ;;;;
@@ -25,9 +25,6 @@
 (defmacro string-append (outputstr &rest args)
   `(setq ,outputstr (concatenate 'string ,outputstr ,@args)))
 
-(defmacro string-field-append (outputstr &rest args)
-  `(setq ,outputstr (concatenate 'string ,outputstr ,@args)))
-
 (defun list-to-string (lst)
   "Converts a list to a string, doesn't include any delimiters between elements"
   (format nil "~{~A~}" lst))
@@ -149,3 +146,54 @@
   (when (stringp str)
     (null (find-if #'not-whitespace? str))))
 
+#+ignore
+(defun string-replace-chars-strings (str repl-alist)
+  "Replace all instances of a chars with a string. repl-alist is an assoc
+list of characters and replacement strings."
+  (let* ((orig-len (length str))
+	 (new-len orign-len))
+    (declare (fixnum orig-len new-len))
+    (dotimes (i orign-len)
+      (declare (fixnum i))
+      (let ((c (schar i str)))
+	)))
+  str)
+
+(defun escape-xml-string (string)
+  "Escape invalid XML characters"
+  (string-replace-char-string
+   (string-replace-char-string string #\& "&")
+   #\< "&lt;"))
+
+(defun string-replace-char-string (string repl-char repl-str)
+  "Replace all occurances of repl-char with repl-str"
+ (declare (simple-string string))
+  (let ((count (count repl-char string)))
+    (declare (fixnum count))
+    (if (zerop count)
+	string
+	(locally (declare (optimize (speed 3) (safety 0)))
+	  (let* ((old-length (length string))
+		 (repl-length (length repl-str))
+		 (new-string (make-string (the fixnum
+					    (+ old-length
+					       (the fixnum
+						 (* count
+						    (the fixnum (1- repl-length)))))))))
+	    (declare (fixnum old-length repl-length)
+		     (simple-string new-string))
+	    (let ((newpos 0))
+	      (declare (fixnum newpos))
+	      (dotimes (oldpos (length string))
+		(declare (fixnum oldpos))
+		(if (char= repl-char (schar string oldpos))
+		    (dotimes (repl-pos repl-length)
+		      (declare (fixnum repl-pos))
+		      (setf (schar new-string newpos) (schar repl-str repl-pos))
+		      (incf newpos))
+		    (progn
+		      (setf (schar new-string newpos) (schar string oldpos))
+		      (incf newpos)))))
+	    new-string)))))
+
+