;;;; Programmer: Kevin M. Rosenberg
;;;; Date Started: Apr 2000
;;;;
-;;;; $Id: strings.lisp,v 1.50 2003/07/21 00:52:56 kevin Exp $
+;;;; $Id$
;;;;
;;;; This file, part of KMRCL, is Copyright (c) 2002 by Kevin M. Rosenberg
;;;;
(setq hash (+ hash (char-code (char str i)))))
(logand hash bitmask)))
-(defun string-not-null? (str)
- (and str (not (zerop (length str)))))
-
-(defun whitespace? (c)
- (declare (character c))
- (locally (declare (optimize (speed 3) (safety 0)))
- (or (char= c #\Space) (char= c #\Tab) (char= c #\Return)
- (char= c #\Linefeed))))
+(defun is-string-empty (str)
+ (zerop (length str)))
+
+(defvar *whitespace-chars* '(#\space #\tab #\return #\linefeed))
-(defun not-whitespace? (c)
- (not (whitespace? c)))
+(defun is-char-whitespace (c)
+ (declare (character c) (optimize (speed 3) (safety 0)))
+ (or (char= c #\Space) (char= c #\Tab) (char= c #\Return)
+ (char= c #\Linefeed)))
-(defun string-ws? (str)
+(defun is-string-whitespace (str)
"Return t if string is all whitespace"
- (when (stringp str)
- (null (find-if #'not-whitespace? str))))
+ (every #'is-char-whitespace str))
+
+(defun string-right-trim-whitespace (str)
+ (string-right-trim *whitespace-chars* str))
+
+(defun string-left-trim-whitespace (str)
+ (string-left-trim *whitespace-chars* str))
+
+(defun string-trim-whitespace (str)
+ (string-trim *whitespace-chars* str))
(defun replaced-string-length (str repl-alist)
(declare (simple-string str)
(+ 10 (- code +char-code-upper-a+))
(- code +char-code-0+))))
-(defun escape-uri-field (query)
+(defun uriencode-string (query)
"Escape non-alphanumeric characters for URI fields"
(declare (simple-string query)
(optimize (speed 3) (safety 0) (space 0)))
(setf (schar str dpos) (hexchar (logand c 15))))
(setf (schar str dpos) ch)))))
-(defun unescape-uri-field (query)
+(defun uridecode-string (query)
"Unescape non-alphanumeric characters for URI fields"
(declare (simple-string query)
(optimize (speed 3) (safety 0) (space 0)))
(defun lex-string (string &key (whitespace '(#\space #\newline)))
"Separates a string at whitespace and returns a list of strings"
- (flet ((whitespace? (char) (member char whitespace :test #'char=)))
+ (flet ((is-sep (char) (member char whitespace :test #'char=)))
(let ((tokens nil))
(do* ((token-start
- (position-if-not #'whitespace? string)
+ (position-if-not #'is-sep string)
(when token-end
- (position-if-not #'whitespace? string :start (1+ token-end))))
+ (position-if-not #'is-sep string :start (1+ token-end))))
(token-end
(when token-start
- (position-if #'whitespace? string :start token-start))
+ (position-if #'is-sep string :start token-start))
(when token-start
- (position-if #'whitespace? string :start token-start))))
+ (position-if #'is-sep string :start token-start))))
((null token-start) (nreverse tokens))
(push (subseq string token-start token-end) tokens)))))
(defun split-alphanumeric-string (string)
"Separates a string at any non-alphanumeric chararacter"
- (flet ((whitespace? (char) (non-alphanumericp char)))
+ (flet ((is-sep (char) (non-alphanumericp char)))
(let ((tokens nil))
(do* ((token-start
- (position-if-not #'whitespace? string)
+ (position-if-not #'is-sep string)
(when token-end
- (position-if-not #'whitespace? string :start (1+ token-end))))
+ (position-if-not #'is-sep string :start (1+ token-end))))
(token-end
(when token-start
- (position-if #'whitespace? string :start token-start))
+ (position-if #'is-sep string :start token-start))
(when token-start
- (position-if #'whitespace? string :start token-start))))
+ (position-if #'is-sep string :start token-start))))
((null token-start) (nreverse tokens))
(push (subseq string token-start token-end) tokens)))))
+