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