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umap.h
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00001 /* -*- Mode: C; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
00002 /* ***** BEGIN LICENSE BLOCK *****
00003  * Version: MPL 1.1/GPL 2.0/LGPL 2.1
00004  *
00005  * The contents of this file are subject to the Mozilla Public License Version
00006  * 1.1 (the "License"); you may not use this file except in compliance with
00007  * the License. You may obtain a copy of the License at
00008  * http://www.mozilla.org/MPL/
00009  *
00010  * Software distributed under the License is distributed on an "AS IS" basis,
00011  * WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License
00012  * for the specific language governing rights and limitations under the
00013  * License.
00014  *
00015  * The Original Code is mozilla.org code.
00016  *
00017  * The Initial Developer of the Original Code is
00018  * Netscape Communications Corporation.
00019  * Portions created by the Initial Developer are Copyright (C) 1998
00020  * the Initial Developer. All Rights Reserved.
00021  *
00022  * Contributor(s):
00023  *   jeroen.dobbelaere@acunia.com
00024  *
00025  * Alternatively, the contents of this file may be used under the terms of
00026  * either of the GNU General Public License Version 2 or later (the "GPL"),
00027  * or the GNU Lesser General Public License Version 2.1 or later (the "LGPL"),
00028  * in which case the provisions of the GPL or the LGPL are applicable instead
00029  * of those above. If you wish to allow use of your version of this file only
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00036  *
00037  * ***** END LICENSE BLOCK ***** */
00038 #ifndef __UMAP__
00039 #define __UMAP__
00040 
00041 #define NOMAPPING 0xfffd
00042 
00043 enum {
00044        uFormat0Tag = 0,
00045        uFormat1Tag,
00046        uFormat2Tag,
00047        uNumFormatTag
00048 };
00049 
00050 typedef struct {
00051               PRUint16 srcBegin;          /* 2 byte     */
00052               PRUint16 srcEnd;                   /* 2 byte     */
00053               PRUint16 destBegin;         /* 2 byte     */
00054 } uFormat0;
00055 
00056 typedef struct {
00057               PRUint16 srcBegin;          /* 2 byte     */
00058               PRUint16 srcEnd;                   /* 2 byte     */
00059               PRUint16      mappingOffset;       /* 2 byte     */
00060 } uFormat1;
00061 
00062 typedef struct {
00063               PRUint16 srcBegin;          /* 2 byte     */
00064               PRUint16 srcEnd;                   /* 2 byte     -waste */
00065               PRUint16 destBegin;         /* 2 byte     */
00066 } uFormat2;
00067 
00068 typedef struct  {
00069        union {
00070               uFormat0      format0;
00071               uFormat1      format1;
00072               uFormat2      format2;
00073        } fmt;
00074 } uMapCell;
00075 
00076 #define UMAPCELL_SIZE (3*sizeof(PRUint16))
00077 
00078 typedef struct  {
00079        PRUint16             itemOfList;
00080        PRUint16             offsetToFormatArray;
00081        PRUint16             offsetToMapCellArray;
00082        PRUint16             offsetToMappingTable;
00083        PRUint16             data[1];
00084 } uTable;
00085 
00086 #endif