;;;; Programmer: Kevin M. Rosenberg
;;;; Date Started: Apr 2000
;;;;
-;;;; $Id: strings.lisp,v 1.19 2003/05/05 20:08:17 kevin Exp $
+;;;; $Id: strings.lisp,v 1.25 2003/05/09 00:05:13 kevin Exp $
;;;;
;;;; This file, part of KMRCL, is Copyright (c) 2002 by Kevin M. Rosenberg
;;;;
(setq in-word nil))))
n-words))
-#+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))
-
-(defun #-allegro delimited-string-to-list
- #+allegro my-delimited-string-to-list
- (string &optional (separator #\space) skip-terminal)
+;; From Larry Hunter with modifications
+(defun position-char (char string start max)
+ (declare (optimize (speed 3) (safety 0) (space 0))
+ (fixnum start max) (simple-string string))
+ (do* ((i start (1+ i)))
+ ((= i max) nil)
+ (declare (fixnum i))
+ (when (char= char (schar string i)) (return i))))
+
+(defun 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)
(do* ((len (length string))
(output '())
(pos 0)
- (end (position separator string :start pos :end len)
- (position separator string :start pos :end len)))
+ (end (position-char separator string pos len)
+ (position-char separator string pos len)))
((null end)
(if (< pos len)
(push (subseq string pos) output)
- (unless (or skip-terminal (null output))
+ (when (or (not skip-terminal) (zerop len))
(push "" output)))
(nreverse output))
(declare (type fixnum pos len)
(setf (aref vec i) (char-code (schar str i))))
vec))
+(defun concat-separated-strings (separator &rest lists)
+ (format nil (format nil "~~{~~A~~^~A~~}" separator) (append-sublists lists)))
+
+(defun only-null-list-elements-p (lst)
+ (or (null lst) (every #'null lst)))
+
+(defun print-separated-strings (strm separator &rest lists)
+ (declare (optimize (speed 3) (safety 0) (space 0) (debug 0)
+ (compilation-speed 0)))
+ (do* ((rest-lists lists (cdr rest-lists))
+ (list (car rest-lists) (car rest-lists))
+ (last-list (only-null-list-elements-p (cdr rest-lists))
+ (only-null-list-elements-p (cdr rest-lists))))
+ ((null rest-lists) strm)
+ (do* ((lst list (cdr lst))
+ (elem (car lst) (car lst))
+ (last-elem (null (cdr lst)) (null (cdr lst))))
+ ((null lst))
+ (write-string elem strm)
+ (unless (and last-elem last-list)
+ (write-string separator strm)))))