adding zephyr-im master branch

zwgc/buffer.c

@@ -0,0 +1,46 @@
+/* This file is part of the Project Athena Zephyr Notification System.
+ * It is one of the source files comprising zwgc, the Zephyr WindowGram
+ * client.
+ *
+ *      Created by:     Marc Horowitz <marc@athena.mit.edu>
+ *
+ *      $Id$
+ *
+ *      Copyright (c) 1989 by the Massachusetts Institute of Technology.
+ *      For copying and distribution information, see the file
+ *      "mit-copyright.h".
+ */
+
+#include <sysdep.h>
+
+#if (!defined(lint) && !defined(SABER))
+static const char rcsid_buffer_c[] = "$Id$";
+#endif
+
+#include <zephyr/mit-copyright.h>
+
+#include "new_memory.h"
+#include "buffer.h"
+
+static char *buffer = 0;
+
+string
+buffer_to_string(void)
+{
+    return(buffer);
+}
+
+void
+clear_buffer(void)
+{
+    if (buffer)
+      free(buffer);
+
+    buffer = string_Copy("");
+}
+
+void
+append_buffer(char *str)
+{
+    buffer = string_Concat2(buffer, str);
+}