1 files changed, 124 insertions, 0 deletions
diff --git a/tools.c b/tools.c
new file mode 100644
index 0000000..e0eeaef
--- /dev/null
+++ b/tools.c
@@ -0,0 +1,124 @@
+/*
+ * tools.c: Various tools
+ *
+ * See the main source file 'osm.c' for copyright information and
+ * how to reach the author.
+ *
+ * $Id: tools.c 1.1 2000/02/19 13:36:48 kls Exp $
+ */
+
+#include "tools.h"
+#include <stdlib.h>
+#include <sys/time.h>
+
+int time_ms(void)
+{
+  struct timeval t;
+  if (gettimeofday(&t, NULL) == 0)
+     return t.tv_sec * 1000 + t.tv_usec / 1000;
+  return 0;
+}
+
+// --- cListObject -----------------------------------------------------------
+
+cListObject::cListObject(void)
+{
+  prev = next = NULL;
+}
+
+cListObject::~cListObject()
+{
+}
+
+void cListObject::Append(cListObject *Object)
+{
+  next = Object;
+  Object->prev = this;
+}
+
+void cListObject::Unlink(void)
+{
+  if (next)
+     next->prev = prev;
+  if (prev)
+     prev->next = next;
+}
+
+int cListObject::Index(void)
+{
+  cListObject *p = prev;
+  int i = 0;
+
+  while (p) {
+        i++;
+        p = p->prev;
+        }
+  return i;
+}
+
+// --- cListBase -------------------------------------------------------------
+
+cListBase::cListBase(void)
+{ 
+  objects = lastObject = NULL;
+}
+
+cListBase::~cListBase()
+{
+  Clear();
+  while (objects) {
+        cListObject *object = objects->Next();
+        delete objects;
+        objects = object;
+        }
+}
+
+void cListBase::Add(cListObject *Object) 
+{ 
+  if (lastObject)
+     lastObject->Append(Object);
+  else
+     objects = Object;
+  lastObject = Object;
+}
+
+void cListBase::Del(cListObject *Object)
+{
+  if (Object == objects)
+     objects = Object->Next();
+  if (Object == lastObject)
+     lastObject = Object->Prev();
+  Object->Unlink();
+  delete Object;
+}
+
+void cListBase::Clear(void)
+{
+  while (objects) {
+        cListObject *object = objects->Next();
+        delete objects;
+        objects = object;
+        }
+  objects = lastObject = NULL;
+}
+
+cListObject *cListBase::Get(int Index)
+{
+  cListObject *object = objects;
+  while (object && Index-- > 0)
+        object = object->Next();
+  return object;
+}
+
+int cListBase::Count(void)
+{
+  int n = 0;
+  cListObject *object = objects;
+
+  while (object) {
+        n++;
+        object = object->Next();
+        }
+  return n;
+}
+