r3676: *** empty log message ***

[kmrcl.git] / strings.lisp

diff --git a/strings.lisp b/strings.lisp
index dce2908125da7f7f0949d16d6427baa8b3fe2c3d..231ad6923fc1788d0ccfc5378a03e232a6cdf404 100644 (file)
--- 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)))))
+
+