include/oox/token/tokenmap.hxx

   1 /* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
   2 /*
   3  * This file is part of the LibreOffice project.
   4  *
   5  * This Source Code Form is subject to the terms of the Mozilla Public
   6  * License, v. 2.0. If a copy of the MPL was not distributed with this
   7  * file, You can obtain one at http://mozilla.org/MPL/2.0/.
   8  *
   9  * This file incorporates work covered by the following license notice:
  10  *
  11  *   Licensed to the Apache Software Foundation (ASF) under one or more
  12  *   contributor license agreements. See the NOTICE file distributed
  13  *   with this work for additional information regarding copyright
  14  *   ownership. The ASF licenses this file to you under the Apache
  15  *   License, Version 2.0 (the "License"); you may not use this file
  16  *   except in compliance with the License. You may obtain a copy of
  17  *   the License at http://www.apache.org/licenses/LICENSE-2.0 .
  18  */
  19
  20 #ifndef INCLUDED_OOX_TOKEN_TOKENMAP_HXX
  21 #define INCLUDED_OOX_TOKEN_TOKENMAP_HXX
  22
  23 #include <sal/config.h>
  24
  25 #include <string_view>
  26 #include <vector>
  27
  28 #include <com/sun/star/uno/Sequence.hxx>
  29 #include <oox/token/tokens.hxx>
  30 #include <oox/dllapi.h>
  31 #include <rtl/ustring.hxx>
  32 #include <sal/log.hxx>
  33 #include <sal/types.h>
  34
  35 namespace oox {
  36
  37
  38 class TokenMap
  39 {
  40 public:
  41     explicit            TokenMap();
  42                         ~TokenMap();
  43
  44     /** Returns the token identifier for the passed Unicode token name. */
  45     static sal_Int32    getTokenFromUnicode( std::u16string_view rUnicodeName );
  46
  47     /** Returns the UTF8 name of the passed token identifier as byte sequence. */
  48     css::uno::Sequence< sal_Int8 > const &
  49                         getUtf8TokenName( sal_Int32 nToken ) const
  50     {
  51         SAL_WARN_IF(nToken < 0 || nToken >= XML_TOKEN_COUNT, "oox", "Wrong nToken parameter");
  52         if (0 <= nToken && nToken < XML_TOKEN_COUNT)
  53             return maTokenNames[ nToken ];
  54         return EMPTY_BYTE_SEQ;
  55     }
  56
  57     /** Returns the token identifier for the passed UTF8 token name. */
  58     sal_Int32           getTokenFromUtf8(
  59                             const css::uno::Sequence< sal_Int8 >& rUtf8Name ) const
  60     {
  61         return getTokenFromUTF8( reinterpret_cast< const char * >(
  62                                 rUtf8Name.getConstArray() ),
  63                              rUtf8Name.getLength() );
  64     }
  65
  66     /** Returns the token identifier for a UTF8 string passed in pToken */
  67     sal_Int32 getTokenFromUTF8( const char *pToken, sal_Int32 nLength ) const
  68     {
  69         // 50% of OOXML tokens are primarily 1 lower-case character, a-z
  70         if( nLength == 1)
  71         {
  72             char c = pToken[0];
  73             if (c >= 'a' && c <= 'z')
  74                 return mnAlphaTokens[ c - 'a' ];
  75         }
  76         return getTokenPerfectHash( pToken, nLength );
  77     }
  78
  79 private:
  80     static sal_Int32 getTokenPerfectHash( const char *pToken, sal_Int32 nLength );
  81     static const css::uno::Sequence< sal_Int8 > EMPTY_BYTE_SEQ;
  82
  83     std::vector< css::uno::Sequence< sal_Int8 > >
  84                         maTokenNames;
  85     sal_Int32           mnAlphaTokens[26];
  86 };
  87
  88
  89 TokenMap& StaticTokenMap();
  90
  91 } // namespace oox
  92
  93 #endif
  94
  95 /* vim:set shiftwidth=4 softtabstop=4 expandtab: */