Implemented string<

[jscl.git] / src / string.lisp

diff --git a/src/string.lisp b/src/string.lisp
index 92c78dc..aebad3a 100644 (file)
--- a/src/string.lisp
+++ b/src/string.lisp
@@ -26,8 +26,14 @@
           (return-from string= nil))))))
 
 (defun string< (s1 s2)
-  -1)
-
+  (let ((len-1 (length s1))
+               (len-2 (length s2)))
+       (cond ((= len-2 0) nil)
+                 ((= len-1 0) 0)
+                 (t (dotimes (i len-1 nil)
+                          (when (char< (char s1 i) (char s2 i))
+                                (return-from string< i)))))))
+               
 (define-setf-expander char (string index)
   (let ((g!string (gensym))
         (g!index (gensym))