include/xmloff/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 INCLUDED_XMLOFF_FASTTOKENHANDLER_HXX
  11 #define INCLUDED_XMLOFF_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 <xmloff/dllapi.h>
  19
  20 namespace xmloff {
  21 namespace 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 > 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 maTokenNames[ nToken ];
  35         return css::uno::Sequence< sal_Int8 >();
  36     }
  37
  38     /** Returns the token identifier for the passed UTF-8 token name. */
  39     static sal_Int32 getTokenFromUtf8( const css::uno::Sequence< sal_Int8 >& rUtf8Name )
  40     {
  41         return getTokenFromUTF8( reinterpret_cast< const char* >(
  42                     rUtf8Name.getConstArray() ), rUtf8Name.getLength() );
  43     }
  44
  45     /** Returns the token identifier for a UTF-8 string */
  46     static sal_Int32 getTokenFromUTF8( const char *pToken, sal_Int32 nLength )
  47     {
  48         return getTokenPerfectHash( pToken, nLength );
  49     }
  50
  51 private:
  52     static sal_Int32 getTokenPerfectHash( const char *pToken, sal_Int32 nLength );
  53
  54     std::vector< css::uno::Sequence< sal_Int8 > > maTokenNames;
  55 };
  56
  57 struct StaticTokenMap : public rtl::Static< TokenMap, StaticTokenMap > {};
  58
  59 class XMLOFF_DLLPUBLIC FastTokenHandler : public cppu::WeakImplHelper<
  60     css::xml::sax::XFastTokenHandler >,
  61     public sax_fastparser::FastTokenHandlerBase
  62 {
  63 public:
  64     explicit FastTokenHandler();
  65     virtual ~FastTokenHandler() override;
  66
  67     // XFastTokenHandler
  68     virtual css::uno::Sequence< sal_Int8 > SAL_CALL getUTF8Identifier( sal_Int32 nToken ) SAL_OVERRIDE;
  69     virtual sal_Int32 SAL_CALL getTokenFromUTF8( const css::uno::Sequence< sal_Int8 >& Identifier ) SAL_OVERRIDE;
  70
  71     // Much faster direct C++ shortcut to the method that matters
  72     virtual sal_Int32 getTokenDirect( const char *pToken, sal_Int32 nLength ) const SAL_OVERRIDE;
  73
  74 private:
  75     TokenMap& mrTokenMap;
  76 };
  77
  78 } // namespace token
  79 } // namespace xmloff
  80
  81 #endif
  82
  83 /* vim:set shiftwidth=4 softtabstop=4 expandtab: */