xmloff/inc/fasttokenhandler.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
  10 #ifndef XMLOFF_INC_FASTTOKENHANDLER_HXX
  11 #define XMLOFF_INC_FASTTOKENHANDLER_HXX
  12
  13 #include <com/sun/star/xml/sax/XFastTokenHandler.hpp>
  14 #include <cppuhelper/implbase.hxx>
  15 #include <sax/fastattribs.hxx>
  16 #include <xmloff/token/tokens.hxx>
  17 #include <rtl/instance.hxx>
  18 #include <sal/log.hxx>
  19 #include <xmloff/dllapi.h>
  20
  21 namespace xmloff::token {
  22
  23 class TokenMap
  24 {
  25 public:
  26     explicit TokenMap();
  27             ~TokenMap();
  28
  29     /** Returns the UTF-8 name of the passed token identifier as byte sequence. */
  30     css::uno::Sequence< sal_Int8 > const & getUtf8TokenName( sal_Int32 nToken ) const
  31     {
  32         SAL_WARN_IF(nToken < 0 || nToken >= XML_TOKEN_COUNT, "xmloff", "Wrong nToken parameter");
  33         if( 0 <= nToken && nToken < XML_TOKEN_COUNT )
  34             return maTokenNamesUtf8[ nToken ];
  35         return EMPTY_BYTE_SEQ;
  36     }
  37
  38     const OUString& getTokenName( sal_Int32 nToken ) const
  39     {
  40         SAL_WARN_IF(nToken < 0 || nToken >= XML_TOKEN_COUNT, "xmloff", "Wrong nToken parameter");
  41         if( 0 <= nToken && nToken < XML_TOKEN_COUNT )
  42             return maTokenNames[ nToken ];
  43         return EMPTY_STRING;
  44     }
  45
  46     /** Returns the token identifier for the passed UTF-8 token name. */
  47     static sal_Int32 getTokenFromUtf8( const css::uno::Sequence< sal_Int8 >& rUtf8Name )
  48     {
  49         return getTokenFromUTF8( reinterpret_cast< const char* >(
  50                     rUtf8Name.getConstArray() ), rUtf8Name.getLength() );
  51     }
  52
  53     /** Returns the token identifier for a UTF-8 string */
  54     static sal_Int32 getTokenFromUTF8( const char *pToken, sal_Int32 nLength )
  55     {
  56         return getTokenPerfectHash( pToken, nLength );
  57     }
  58
  59 private:
  60     static sal_Int32 getTokenPerfectHash( const char *pToken, sal_Int32 nLength );
  61
  62     std::vector< css::uno::Sequence< sal_Int8 > > maTokenNamesUtf8;
  63     std::vector< OUString > maTokenNames;
  64
  65     static const css::uno::Sequence< sal_Int8 > EMPTY_BYTE_SEQ;
  66     static const OUString EMPTY_STRING;
  67 };
  68
  69 struct StaticTokenMap : public rtl::Static< TokenMap, StaticTokenMap > {};
  70
  71 class FastTokenHandler final :
  72     public sax_fastparser::FastTokenHandlerBase
  73 {
  74 public:
  75     explicit FastTokenHandler();
  76     virtual ~FastTokenHandler() override;
  77
  78     // XFastTokenHandler
  79     virtual css::uno::Sequence< sal_Int8 > SAL_CALL getUTF8Identifier( sal_Int32 nToken ) override;
  80     virtual sal_Int32 SAL_CALL getTokenFromUTF8( const css::uno::Sequence< sal_Int8 >& Identifier ) override;
  81
  82     const OUString & getIdentifier( sal_Int32 nToken ) const;
  83
  84     // Much faster direct C++ shortcut to the method that matters
  85     virtual sal_Int32 getTokenDirect( const char *pToken, sal_Int32 nLength ) const override;
  86
  87 private:
  88     TokenMap& mrTokenMap;
  89 };
  90
  91 } // namespace xmloff::token
  92
  93 #endif
  94
  95 /* vim:set shiftwidth=4 softtabstop=4 expandtab: */