xmlhelp/source/cxxhelp/provider/db.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 #ifndef HELPDATAFILEPROXY_DB_HXX_
  20 #define HELPDATAFILEPROXY_DB_HXX_
  21
  22 #include "com/sun/star/ucb/XSimpleFileAccess3.hpp"
  23
  24 #ifndef HAVE_CXX0X
  25 #define BOOST_NO_0X_HDR_TYPEINDEX
  26 #endif
  27 #include <boost/unordered_map.hpp>
  28 #include <rtl/string.hxx>
  29
  30 namespace helpdatafileproxy {
  31
  32     namespace hdf_internal
  33     {
  34         class Noncopyable
  35         {
  36             // not implemented
  37             Noncopyable(const Noncopyable&);
  38             void operator=(const Noncopyable&);
  39         protected:
  40             Noncopyable() {}
  41             ~Noncopyable() {}
  42         };
  43     }
  44
  45     class HDFData
  46     {
  47         friend class        Hdf;
  48
  49         int                 m_nSize;
  50         char*               m_pBuffer;
  51
  52         void copyToBuffer( const char* pSrcData, int nSize );
  53
  54     public:
  55         HDFData( void )
  56             : m_nSize( 0 )
  57             , m_pBuffer( NULL )
  58         {}
  59         ~HDFData()
  60             { delete [] m_pBuffer; }
  61
  62           int getSize() const
  63             { return m_nSize; }
  64           const char* getData() const
  65             { return m_pBuffer; }
  66     };
  67
  68     struct eq
  69     {
  70         bool operator()( const OString& rKey1, const OString& rKey2 ) const
  71         { return (rKey1 == rKey2); }
  72     };
  73
  74     struct ha
  75     {
  76         size_t operator()( const OString& rName ) const
  77             { return rName.hashCode(); }
  78     };
  79
  80     typedef boost::unordered_map< OString,std::pair<int,int>,ha,eq >   StringToValPosMap;
  81     typedef boost::unordered_map< OString,OString,ha,eq >     StringToDataMap;
  82
  83     class Hdf : hdf_internal::Noncopyable
  84     {
  85         OUString       m_aFileURL;
  86         StringToDataMap*    m_pStringToDataMap;
  87         StringToValPosMap*  m_pStringToValPosMap;
  88         com::sun::star::uno::Reference< com::sun::star::ucb::XSimpleFileAccess3 >
  89                             m_xSFA;
  90
  91         com::sun::star::uno::Sequence< sal_Int8 >
  92                             m_aItData;
  93         const char*         m_pItData;
  94         int                 m_nItRead;
  95         int                 m_iItPos;
  96
  97         bool implReadLenAndData( const char* pData, int& riPos, HDFData& rValue );
  98
  99     public:
 100         //HDFHelp must get a fileURL which can then directly be used by simple file access.
 101         //SimpleFileAccess requires file URLs as arguments. Passing file path may work but fails
 102         //for example when using long file paths on Windows, which start with "\\?\"
 103         Hdf( const OUString& rFileURL,
 104             com::sun::star::uno::Reference< com::sun::star::ucb::XSimpleFileAccess3 > xSFA )
 105                 : m_aFileURL( rFileURL )
 106                 , m_pStringToDataMap( NULL )
 107                 , m_pStringToValPosMap( NULL )
 108                 , m_xSFA( xSFA )
 109                 , m_pItData( NULL )
 110                 , m_nItRead( -1 )
 111                 , m_iItPos( -1 )
 112         {
 113             OSL_ASSERT(rFileURL.startsWith("file:"));
 114         }
 115         ~Hdf()
 116             { releaseHashMap(); }
 117
 118         void createHashMap( bool bOptimizeForPerformance = false );
 119         void releaseHashMap( void );
 120
 121         bool getValueForKey( const OString& rKey, HDFData& rValue );
 122
 123         bool startIteration( void );
 124         bool getNextKeyAndValue( HDFData& rKey, HDFData& rValue );
 125         void stopIteration( void );
 126     };
 127 }
 128
 129 #endif
 130
 131 /* vim:set shiftwidth=4 softtabstop=4 expandtab: */