1 files changed, 64 insertions, 0 deletions
diff --git a/lib/list.c b/lib/list.c
new file mode 100644
index 0000000..8dcca72
--- /dev/null
+++ b/lib/list.c
@@ -0,0 +1,64 @@
+/* list.c: simple list (represented as arrays) manipulation.
+
+Copyright (C) 1992 Free Software Foundation, Inc.
+
+This program is free software; you can redistribute it and/or modify
+it under the terms of the GNU General Public License as published by
+the Free Software Foundation; either version 2, or (at your option)
+any later version.
+
+This program is distributed in the hope that it will be useful,
+but WITHOUT ANY WARRANTY; without even the implied warranty of
+MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+GNU General Public License for more details.
+
+You should have received a copy of the GNU General Public License
+along with this program; if not, write to the Free Software
+Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.  */
+
+#include "config.h"
+
+#include "list.h"
+
+
+list_type
+list_init ()
+{
+  list_type answer;
+
+  LIST_DATA (answer) = NULL;
+  LIST_SIZE (answer) = 0;
+
+  return answer;
+}
+
+
+/* Free the memory for both the elements and the list itself.  */
+
+void
+list_free (list_type *list)
+{
+  if (list != NULL && LIST_DATA (*list) != NULL)
+    {
+      unsigned e;
+      
+      for (e = 0; e < LIST_SIZE (*list); e++)
+        free (LIST_ELT (*list, e));
+      
+      free (LIST_DATA (*list));
+    }
+}
+
+/* The list consists entirely of pointers to objects.  We allocate the
+   space for the objects pointed to here, though, and return a pointer to
+   the newly-created final element in the list.  */
+
+address
+list_append (list_type *list, unsigned element_size)
+{
+  LIST_SIZE (*list)++;
+  XRETALLOC (LIST_DATA (*list), LIST_SIZE (*list), address);
+  LIST_LAST_ELT (*list) = xmalloc (element_size);
+
+  return LIST_LAST_ELT (*list);
+}