Mercurial > repos > libtu-3 / file diff

--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/iterable.c	Sun Feb 27 00:09:12 2005 +0100
@@ -0,0 +1,51 @@
+/*
+ * libtu/iterable.c
+ *
+ * Copyright (c) Tuomo Valkonen 2005.
+ *
+ * You may distribute and modify this library under the terms of either
+ * the Clarified Artistic License or the GNU LGPL, version 2.1 or later.
+ */
+
+#include "iterable.h"
+
+
+void *iterable_nth(uint n, VoidIterator *iter, void *st)
+{
+    void *p;
+    
+    while(1){
+        p=iter(st);
+        if(p==NULL || n==0)
+            break;
+        n--;
+    }
+    
+    return p;
+}
+
+
+bool iterable_is_on(void *p, VoidIterator *iter, void *st)
+{
+    while(1){
+        void *p2=iter(st);
+        if(p2==NULL)
+            return FALSE;
+        if(p==p2)
+            return TRUE;
+    }
+}
+
+
+void *iterable_find(BoolFilter *f, void *fparam, 
+                    VoidIterator *iter, void *st)
+{
+    while(1){
+        void *p=iter(st);
+        if(p==NULL)
+            return NULL;
+        if(f(p, fparam))
+            return p;
+    }
+}
+