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diff --git a/nx-X11/include/extensions/lbxbufstr.h b/nx-X11/include/extensions/lbxbufstr.h
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+/* $Xorg: lbxbufstr.h,v 1.3 2000/08/18 04:05:45 coskrey Exp $ */
+/*
+ * Copyright 1988, 1989, 1990, 1994 Network Computing Devices, Inc.
+ *
+ * Permission to use, copy, modify, distribute, and sell this software and
+ * its documentation for any purpose is hereby granted without fee, provided
+ * that the above copyright notice appear in all copies and that both that
+ * copyright notice and this permission notice appear in supporting
+ * documentation, and that the name Network Computing Devices, Inc. not be
+ * used in advertising or publicity pertaining to distribution of this
+ * software without specific, written prior permission.
+ *
+ * THIS SOFTWARE IS PROVIDED `AS-IS'. NETWORK COMPUTING DEVICES, INC.,
+ * DISCLAIMS ALL WARRANTIES WITH REGARD TO THIS SOFTWARE, INCLUDING WITHOUT
+ * LIMITATION ALL IMPLIED WARRANTIES OF MERCHANTABILITY, FITNESS FOR A
+ * PARTICULAR PURPOSE, OR NONINFRINGEMENT. IN NO EVENT SHALL NETWORK
+ * COMPUTING DEVICES, INC., BE LIABLE FOR ANY DAMAGES WHATSOEVER, INCLUDING
+ * SPECIAL, INCIDENTAL OR CONSEQUENTIAL DAMAGES, INCLUDING LOSS OF USE,
+ * DATA, OR PROFITS, EVEN IF ADVISED OF THE POSSIBILITY THEREOF, AND
+ * REGARDLESS OF WHETHER IN AN ACTION IN CONTRACT, TORT OR NEGLIGENCE,
+ * ARISING OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS
+ * SOFTWARE.
+ *
+ */
+/* $XFree86$ */
+
+#ifndef _BUFFERSTR_H_
+#define _BUFFERSTR_H_
+
+#include <X11/extensions/lbxbuf.h>
+
+/*
+ * ZLIB Input/Output buffer
+ */
+typedef struct _zlibbuffer {
+ char *bufbase;
+ char *bufend;
+ char *bufptr;
+ int bufcnt;
+} ZlibBuffer;
+
+#define BYTES_AVAIL(inbuf, len) \
+ (((inbuf)->bufcnt >= (len)) ? (inbuf)->bufptr : NULL)
+
+#endif /* _BUFFERSTR_H_ */