X-Git-Url: https://git.distorted.org.uk/~mdw/clg/blobdiff_plain/560af5c515eb5b6206040a9334de4254d2650147..82747bbd916a0478fa35a795bcdff4fcc463370a:/glib/gutils.lisp

diff --git a/glib/gutils.lisp b/glib/gutils.lisp
index cc5c016..5d6e649 100644
--- a/glib/gutils.lisp
+++ b/glib/gutils.lisp
@@ -15,7 +15,7 @@
 ;; License along with this library; if not, write to the Free Software
 ;; Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
 
-;; $Id: gutils.lisp,v 1.1 2000-08-14 16:44:34 espen Exp $
+;; $Id: gutils.lisp,v 1.4 2001-04-29 20:01:54 espen Exp $
 
 
 (in-package "KERNEL")
@@ -83,3 +83,63 @@
   
 (defun null-pointer-p (pointer)
   (zerop (sap-int pointer)))
+  
+
+(defmacro when-bind ((var expr) &body body)
+  `(let ((,var ,expr))
+     (when ,var
+       ,@body)))
+
+
+(defmacro assoc-ref (key alist &key (test #'eq))
+  `(cdr (assoc ,key ,alist :test ,test)))
+
+
+(defmacro assoc-lref (key alist &key (test #'eq))
+  `(cadr (assoc ,key ,alist :test ,test)))
+
+
+(defun assoc-rem (key alist &key (test #'eq))
+  (remove-if #'(lambda (element) (funcall test key (car element))) alist))
+
+
+(defun assoc-delete (key alist &key (test #'eq))
+  (delete-if #'(lambda (element) (funcall test key (car element))) alist))
+
+
+(defun funcallable (object)
+  (if (consp object)
+      (fdefinition object)
+    object))
+
+
+(defun split-string (string delimiter)
+  (declare (simple-string string) (character delimiter))
+  (check-type string string)
+  (check-type delimiter character)
+  (let ((pos (position delimiter string)))
+   (if (not pos)
+        (list string)
+      (cons
+       (subseq string 0 pos)
+       (split-string (subseq string (1+ pos)) delimiter)))))
+
+(defun split-string-if (string predicate)
+  (declare (simple-string string))
+  (check-type string string)
+  (check-type predicate (or symbol function))
+  (let ((pos (position-if predicate string :start 1)))
+    (if (not pos)
+        (list string)
+      (cons
+       (subseq string 0 pos)
+       (split-string-if (subseq string pos) predicate)))))
+
+(defun concatenate-strings (strings &optional delimiter)
+  (if (not (rest strings))
+      (first strings)
+    (concatenate
+     'string
+     (first strings)
+     (if delimiter (string delimiter) "")
+     (concatenate-strings (rest strings)))))