r4811: Auto commit for Debian build

[kmrcl.git] / strings.lisp

diff --git a/strings.lisp b/strings.lisp
index 91e51987e8511608f40e758a4ed484e1eef863a6..a6db99b655ddde6af58900eab8b8d289167a3bcf 100644 (file)
--- a/strings.lisp
+++ b/strings.lisp
@@ -7,7 +7,7 @@
 ;;;; Programmer:    Kevin M. Rosenberg
 ;;;; Date Started:  Apr 2000
 ;;;;
-;;;; $Id: strings.lisp,v 1.13 2003/04/29 00:46:35 kevin Exp $
+;;;; $Id: strings.lisp,v 1.18 2003/05/05 19:54:14 kevin Exp $
 ;;;;
 ;;;; This file, part of KMRCL, is Copyright (c) 2002 by Kevin M. Rosenberg
 ;;;;
@@ -44,31 +44,50 @@
          (setq in-word nil))))
     n-words))
 
-#+excl
-(defun delimited-string-to-list (string &optional (separator #\space))
+#+allegro
+(defun delimited-string-to-list (string &optional (separator #\space) skip-terminal)
+  "Uses allegro's internal function since that benchmarks faster than
+my algorithm. Does allegro use assembly?"
+  (declare (string string) (character separator))
+  (when skip-terminal
+    (let ((len (length string)))
+      (when (and (plusp len) (char= separator (char string (1- len))))
+       (setq string (subseq string 0 (1- len))))))
   (excl:delimited-string-to-list string separator))
 
-#-excl
-(defun delimited-string-to-list (sequence &optional (separator #\space))
-  "Split a string by a delimitor"
-  (loop
-      with start = 0
-      for end = (position separator sequence :start start)
-      collect (subseq sequence start end)
-      until (null end)
-      do
-    (setf start (1+ end))))
-
-#+excl
-(defun list-to-delimited-string (list &optional (separator #\space))
-  (excl:list-to-delimited-string list separator))
+(defun #-allegro  delimited-string-to-list
+       #+allegro my-delimited-string-to-list
+       (string &optional (separator #\space) skip-terminal)
+  "split a string with delimiter"
+  (declare (optimize (speed 3) (safety 0) (space 0) (compilation-speed 0))
+          (type string string)
+          (type character separator))
+  (do* ((len (length string))
+       (output '())
+       (pos 0)
+       (end (position separator string :start pos :end len)
+            (position separator string :start pos :end len))
+       (previous nil))
+       ((null end)
+       (cond
+         ((null previous)
+          (list string))
+         (t
+          (incf previous)
+          (if (< previous len)
+              (push (subseq string previous) output)
+              (unless skip-terminal
+                (push "" output)))
+          (nreverse output))))
+    (declare (type fixnum pos len)
+            (type (or null fixnum) end previous))
+    (push (subseq string pos end) output)
+    (setq previous end)
+    (setq pos (1+ end))))
+
 
-#-excl
 (defun list-to-delimited-string (list &optional (separator #\space))
-  (if (consp list)
-      (let ((fmt (format nil "~~A~~{~A~~A~~}" separator)))
-       (format nil fmt (first list) (rest list)))
-      ""))
+  (format nil (format nil "~~{~~A~~^~A~~}" separator) list))
 
 (defun string-invert (str)
   "Invert case of a string"
@@ -115,6 +134,13 @@
        (subseq s 0 (1- len))
        s)))
 
+(defun nstring-trim-last-character (s)
+  "Return the string less the last character"
+  (let ((len (length s)))
+    (if (plusp len)
+       (nsubseq s 0 (1- len))
+       s)))
+
 (defun string-hash (str &optional (bitmask 65535))
   (let ((hash 0))
     (declare (fixnum hash)
@@ -184,7 +210,7 @@ list of characters and replacement strings."
 (defun escape-xml-string (string)
   "Escape invalid XML characters"
   (substitute-chars-strings 
-   string '((#\& . "&amp;") (#\> . "&gt;") (#\< . "&lt;"))))
+   string '((#\& . "&amp;") (#\> . "&gt;") (#\< . "&lt;") (#\" . "&quot;"))))
 
 
 (defun make-usb8-array (len)