include/sax/fastattribs.hxx

   1 /* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
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  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_SAX_FASTATTRIBS_HXX
  21 #define INCLUDED_SAX_FASTATTRIBS_HXX
  22
  23 #include <com/sun/star/xml/sax/XFastAttributeList.hpp>
  24 #include <com/sun/star/xml/sax/XFastTokenHandler.hpp>
  25 #include <com/sun/star/xml/Attribute.hpp>
  26 #include <com/sun/star/xml/FastAttribute.hpp>
  27
  28 #include <cppuhelper/implbase1.hxx>
  29 #include <sax/saxdllapi.h>
  30
  31 #include <map>
  32 #include <vector>
  33
  34 namespace sax_fastparser
  35 {
  36
  37 struct UnknownAttribute
  38 {
  39     OUString maNamespaceURL;
  40     OString maName;
  41     OString maValue;
  42
  43     UnknownAttribute( const OUString& rNamespaceURL, const OString& rName, const sal_Char* pValue );
  44
  45     UnknownAttribute( const OString& rName, const sal_Char* pValue );
  46
  47     void FillAttribute( ::com::sun::star::xml::Attribute* pAttrib ) const;
  48 };
  49
  50 typedef std::vector< UnknownAttribute > UnknownAttributeList;
  51
  52 /// A native C++ interface to tokenisation
  53 class SAX_DLLPUBLIC FastTokenHandlerBase
  54 {
  55 public:
  56     FastTokenHandlerBase();
  57     virtual ~FastTokenHandlerBase();
  58     virtual sal_Int32 getTokenDirect( const char *pToken, sal_Int32 nLength ) const = 0;
  59 };
  60
  61 /// avoid constantly allocating and freeing sequences.
  62 class SAX_DLLPUBLIC FastTokenLookup
  63 {
  64     static const int mnUtf8BufferSize = 128;
  65     ::css::uno::Sequence< sal_Int8 > maUtf8Buffer;
  66 public:
  67     FastTokenLookup();
  68     sal_Int32 getTokenFromChars(
  69         const ::css::uno::Reference< ::css::xml::sax::XFastTokenHandler > &mxTokenHandler,
  70         FastTokenHandlerBase *pTokenHandler,
  71         const char *pStr, size_t nLength = 0 );
  72 };
  73
  74 class SAX_DLLPUBLIC FastAttributeList : public ::cppu::WeakImplHelper1< ::com::sun::star::xml::sax::XFastAttributeList >
  75 {
  76 public:
  77     FastAttributeList( const ::com::sun::star::uno::Reference< ::com::sun::star::xml::sax::XFastTokenHandler >& xTokenHandler,
  78                        FastTokenHandlerBase *pOptHandlerBase = NULL );
  79     virtual ~FastAttributeList();
  80
  81     void clear();
  82     void add( sal_Int32 nToken, const sal_Char* pValue, size_t nValueLength = 0 );
  83     void add( sal_Int32 nToken, const OString& rValue );
  84     void addUnknown( const OUString& rNamespaceURL, const OString& rName, const sal_Char* pValue );
  85     void addUnknown( const OString& rName, const sal_Char* pValue );
  86
  87     // performance sensitive shortcuts to avoid allocation ...
  88     bool getAsInteger( sal_Int32 nToken, sal_Int32 &rInt);
  89     bool getAsDouble( sal_Int32 nToken, double &rDouble);
  90     bool getAsChar( sal_Int32 nToken, const char*& rPos ) const;
  91
  92     // XFastAttributeList
  93     virtual ::sal_Bool SAL_CALL hasAttribute( ::sal_Int32 Token ) throw (::com::sun::star::uno::RuntimeException);
  94     virtual ::sal_Int32 SAL_CALL getValueToken( ::sal_Int32 Token ) throw (::com::sun::star::xml::sax::SAXException, ::com::sun::star::uno::RuntimeException);
  95     virtual ::sal_Int32 SAL_CALL getOptionalValueToken( ::sal_Int32 Token, ::sal_Int32 Default ) throw (::com::sun::star::uno::RuntimeException);
  96     virtual OUString SAL_CALL getValue( ::sal_Int32 Token ) throw (::com::sun::star::xml::sax::SAXException, ::com::sun::star::uno::RuntimeException);
  97     virtual OUString SAL_CALL getOptionalValue( ::sal_Int32 Token ) throw (::com::sun::star::uno::RuntimeException);
  98     virtual ::com::sun::star::uno::Sequence< ::com::sun::star::xml::Attribute > SAL_CALL getUnknownAttributes(  ) throw (::com::sun::star::uno::RuntimeException);
  99     virtual ::com::sun::star::uno::Sequence< ::com::sun::star::xml::FastAttribute > SAL_CALL getFastAttributes() throw (::com::sun::star::uno::RuntimeException);
 100
 101 private:
 102     inline sal_Int32 AttributeValueLength(sal_Int32 i);
 103
 104 private:
 105     sal_Char *mpChunk; ///< buffer to store all attribute values - null terminated strings
 106     sal_Int32 mnChunkLength; ///< size of allocated memory for mpChunk
 107     // maAttributeValues stores pointers, relative to mpChunk, for each attribute value string
 108     // length of the string is maAttributeValues[n+1] - maAttributeValues[n] - 1
 109     // maAttributeValues[0] == 0
 110     std::vector< sal_Int32 > maAttributeValues;
 111     std::vector< sal_Int32 > maAttributeTokens;
 112     UnknownAttributeList maUnknownAttributes;
 113     ::com::sun::star::uno::Reference< ::com::sun::star::xml::sax::XFastTokenHandler > mxTokenHandler;
 114     FastTokenHandlerBase *mpTokenHandler;
 115
 116     FastTokenLookup maTokenLookup;
 117 };
 118
 119 }
 120
 121 #endif
 122
 123 /* vim:set shiftwidth=4 softtabstop=4 expandtab: */