SGI SI GLU library

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diff --git a/src/glu/sgi/libnurbs/internals/maplist.cc b/src/glu/sgi/libnurbs/internals/maplist.cc
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+/*
+** License Applicability. Except to the extent portions of this file are
+** made subject to an alternative license as permitted in the SGI Free
+** Software License B, Version 1.1 (the "License"), the contents of this
+** file are subject only to the provisions of the License. You may not use
+** this file except in compliance with the License. You may obtain a copy
+** of the License at Silicon Graphics, Inc., attn: Legal Services, 1600
+** Amphitheatre Parkway, Mountain View, CA 94043-1351, or at:
+**
+** http://oss.sgi.com/projects/FreeB
+**
+** Note that, as provided in the License, the Software is distributed on an
+** "AS IS" basis, with ALL EXPRESS AND IMPLIED WARRANTIES AND CONDITIONS
+** DISCLAIMED, INCLUDING, WITHOUT LIMITATION, ANY IMPLIED WARRANTIES AND
+** CONDITIONS OF MERCHANTABILITY, SATISFACTORY QUALITY, FITNESS FOR A
+** PARTICULAR PURPOSE, AND NON-INFRINGEMENT.
+**
+** Original Code. The Original Code is: OpenGL Sample Implementation,
+** Version 1.2.1, released January 26, 2000, developed by Silicon Graphics,
+** Inc. The Original Code is Copyright (c) 1991-2000 Silicon Graphics, Inc.
+** Copyright in any portions created by third parties is as indicated
+** elsewhere herein. All Rights Reserved.
+**
+** Additional Notice Provisions: The application programming interfaces
+** established by SGI in conjunction with the Original Code are The
+** OpenGL(R) Graphics System: A Specification (Version 1.2.1), released
+** April 1, 1999; The OpenGL(R) Graphics System Utility Library (Version
+** 1.3), released November 4, 1998; and OpenGL(R) Graphics with the X
+** Window System(R) (Version 1.3), released October 19, 1998. This software
+** was created using the OpenGL(R) version 1.2.1 Sample Implementation
+** published by SGI, but has not been independently verified as being
+** compliant with the OpenGL(R) version 1.2.1 Specification.
+*/
+
+/*
+ * maplist.c++
+ *
+ * $Date: 2001/03/17 00:25:41 $ $Revision: 1.1 $
+ * $Header: /home/krh/git/sync/mesa-cvs-repo/Mesa/src/glu/sgi/libnurbs/internals/maplist.cc,v 1.1 2001/03/17 00:25:41 brianp Exp $
+ */
+
+#include "glimports.h"
+#include "mystdio.h"
+#include "myassert.h"
+#include "mymath.h"
+#include "nurbsconsts.h"
+#include "maplist.h"
+#include "mapdesc.h"
+#include "backend.h"
+ 
+Maplist::Maplist( Backend& b )
+    : mapdescPool( sizeof( Mapdesc ), 10, "mapdesc pool" ),
+      backend( b )
+{
+    maps = 0; lastmap = &maps;
+}
+
+void 
+Maplist::initialize( void )
+{
+    freeMaps();
+    define( N_P2D, 0, 2 );
+    define( N_P2DR, 1, 3 );
+}
+
+void 
+Maplist::add( long type, int israt, int ncoords )
+{
+    *lastmap = new(mapdescPool) Mapdesc( type, israt, ncoords, backend );
+    lastmap = &((*lastmap)->next);
+}
+
+void 
+Maplist::define( long type, int israt, int ncoords )
+{
+    Mapdesc *m = locate( type );
+    assert( m == NULL || ( m->isrational == israt && m->ncoords == ncoords ) );
+    add( type, israt, ncoords );
+}
+
+void 
+Maplist::remove( Mapdesc *m )
+{
+    for( Mapdesc **curmap = &maps; *curmap; curmap = &((*curmap)->next) ) {
+	if( *curmap == m ) {
+	    *curmap = m->next;
+	    m->deleteMe( mapdescPool );
+	    return;
+	}
+    }
+    abort();
+}
+
+void
+Maplist::freeMaps( void )
+{
+    mapdescPool.clear();
+    maps = 0;
+    lastmap = &maps;
+}
+
+Mapdesc * 
+Maplist::find( long type )
+{
+    Mapdesc *val = locate( type );
+    assert( val != 0 );
+    return val;
+}
+
+Mapdesc * 
+Maplist::locate( long type )
+{
+    Mapdesc *m;
+    for( m = maps; m; m = m->next )
+	if( m->getType() == type ) break;
+    return m;
+}