(defun is-string-empty (str)
(zerop (length str)))
-(defvar *whitespace-chars* '(#\space #\tab #\return #\linefeed))
+(defvar *whitespace-chars* '(#\space #\tab #\return #\linefeed
+ #+allegro #\%space
+ #+lispworks #\No-Break-Space))
(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)))
+ (char= c #\Linefeed)
+ #+allegro (char= c #\%space)
+ #+lispworks (char= c #\No-Break-Space)))
(defun is-string-whitespace (str)
"Return t if string is all whitespace"
(+ 10 (- code +char-code-upper-a+))
(- code +char-code-0+))))
-(defun uriencode-string (query)
+(defun encode-uri-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 uridecode-string (query)
+(defun decode-uri-string (query)
"Unescape non-alphanumeric characters for URI fields"
(declare (simple-string query)
(optimize (speed 3) (safety 0) (space 0)))
(defun string-maybe-shorten (str maxlen)
- (let ((len (length str)))
- (if (<= len maxlen)
- str
- (concatenate 'string (subseq str 0 (- maxlen 3)) "..."))))
+ (string-elide str maxlen :end))
+(defun string-elide (str maxlen position)
+ (declare (fixnum maxlen))
+ (let ((len (length str)))
+ (declare (fixnum len))
+ (cond
+ ((<= len maxlen)
+ str)
+ ((<= maxlen 3)
+ "...")
+ ((eq position :middle)
+ (multiple-value-bind (mid remain) (truncate maxlen 2)
+ (let ((end1 (- mid 1))
+ (start2 (- len (- mid 2) remain)))
+ (concatenate 'string (subseq str 0 end1) "..." (subseq str start2)))))
+ ((or (eq position :end) t)
+ (concatenate 'string (subseq str 0 (- maxlen 3)) "...")))))
(defun shrink-vector (str size)
#+allegro
(t
(setq in-white nil)
(write-char c stream)))))))
+
+(defun string->list (string)
+ (let ((eof (list nil)))
+ (with-input-from-string (stream string)
+ (do ((x (read stream nil eof) (read stream nil eof))
+ (l nil (cons x l)))
+ ((eq x eof) (nreverse l))))))