lisp-to-js and js-to-lisp wrappers

[jscl.git] / src / string.lisp

diff --git a/src/string.lisp b/src/string.lisp
index 1bb322b..411c638 100644 (file)
--- a/src/string.lisp
+++ b/src/string.lisp
@@ -22,6 +22,10 @@
 (defun make-string (n &key initial-element)
   (make-array n :element-type 'character :initial-element initial-element))
 
+(defun char (string index)
+  (unless (stringp string) (error "~S is not a string" string))
+  (storage-vector-ref string index))
+
 (defun string (x)
   (cond ((stringp x) x)
         ((symbolp x) (symbol-name x))
@@ -57,15 +61,19 @@
             `(aset ,g!string ,g!index ,g!value)
             `(char ,g!string ,g!index))))
 
-(defun concatenate-two (string1 string2)
-  (let* ((len1 (length string1))
-         (len2 (length string2))
-         (string (make-array (+ len1 len2) :element-type 'character))
-         (i 0))
-    (dotimes (j len1)
-      (aset string i (char string1 j))
-      (incf i))
-    (dotimes (j len2)
-      (aset string i (char string2 j))
-      (incf i))
-    string))
+
+(defun concat (&rest strs)
+  (flet ((concat-two (str1 str2)
+           (concatenate-storage-vector str1 str2)))
+    (!reduce #'concat-two strs "")))
+
+
+(defun string-upcase (string)
+  (let ((new (make-string (length string))))
+    (dotimes (i (length string) new)
+      (aset new i (char-upcase (char string i))))))
+
+(defun string-downcase (string)
+  (let ((new (make-string (length string))))
+    (dotimes (i (length string) new)
+      (aset new i (char-downcase (char string i))))))