3 ;; JSCL is free software: you can redistribute it and/or
4 ;; modify it under the terms of the GNU General Public License as
5 ;; published by the Free Software Foundation, either version 3 of the
6 ;; License, or (at your option) any later version.
8 ;; JSCL is distributed in the hope that it will be useful, but
9 ;; WITHOUT ANY WARRANTY; without even the implied warranty of
10 ;; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
11 ;; General Public License for more details.
13 ;; You should have received a copy of the GNU General Public License
14 ;; along with JSCL. If not, see <http://www.gnu.org/licenses/>.
17 ;; (and (vectorp x) (eq (array-element-type x) 'character)))
22 (defun make-string (n &key initial-element)
23 (make-array n :element-type 'character :initial-element initial-element))
25 ;; (defun char-to-string (x)
26 ;; (make-string 1 :initial-element x))
30 ((symbolp x) (symbol-name x))
31 (t (char-to-string x))))
33 (defun string= (s1 s2)
34 (let* ((s1 (string s1))
37 (when (= (length s2) n)
39 (unless (char= (char s1 i) (char s2 i))
40 (return-from string= nil))))))
42 (defun string< (s1 s2)
43 (let ((len-1 (length s1))
45 (cond ((= len-2 0) nil)
47 (t (dotimes (i len-1 nil)
48 (when (char< (char s1 i) (char s2 i))
49 (return-from string< i))
50 (when (and (= i (1- len-1)) (> len-2 len-1))
51 (return-from string< (1+ i))))))))
53 (define-setf-expander char (string index)
54 (let ((g!string (gensym))
57 (values (list g!string g!index)
60 `(aset ,g!string ,g!index ,g!value)
61 `(char ,g!string ,g!index))))
63 (defun concatenate-two (string1 string2)
64 (let* ((len1 (length string1))
65 (len2 (length string2))
66 (string (make-array (+ len1 len2) :element-type 'character))
69 (aset string i (char string1 j))
72 (aset string i (char string2 j))