include/ucbhelper/fd_inputstream.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
  20 #ifndef INCLUDED_UCBHELPER_FD_INPUTSTREAM_HXX
  21 #define INCLUDED_UCBHELPER_FD_INPUTSTREAM_HXX
  22
  23 #include <osl/file.h>
  24 #include <com/sun/star/io/XInputStream.hpp>
  25 #include <com/sun/star/io/XSeekable.hpp>
  26 #include <cppuhelper/implbase.hxx>
  27 #include <ucbhelper/ucbhelperdllapi.h>
  28 #include <mutex>
  29
  30 namespace ucbhelper
  31 {
  32     typedef cppu::WeakImplHelper<
  33         css::io::XInputStream,
  34         css::io::XSeekable > FdInputStream_Base;
  35
  36     /** Implements a seekable InputStream
  37      *  working on a buffer.
  38      */
  39     class UCBHELPER_DLLPUBLIC FdInputStream final : public FdInputStream_Base
  40     {
  41     public:
  42
  43         /** Defines the storage kind found
  44          *  on which the inputstream acts.
  45          */
  46         FdInputStream(oslFileHandle tmpfl);
  47
  48         virtual ~FdInputStream() override;
  49
  50         virtual sal_Int32 SAL_CALL
  51         readBytes(css::uno::Sequence< sal_Int8 >& aData,
  52                   sal_Int32 nBytesToRead) override;
  53
  54         virtual sal_Int32 SAL_CALL
  55         readSomeBytes(css::uno::Sequence< sal_Int8 >& aData,
  56                       sal_Int32 nMaxBytesToRead ) override;
  57
  58         virtual void SAL_CALL
  59         skipBytes(sal_Int32 nBytesToSkip) override;
  60
  61         virtual sal_Int32 SAL_CALL
  62         available() override;
  63
  64         virtual void SAL_CALL
  65         closeInput() override;
  66
  67
  68         /** XSeekable
  69          */
  70
  71         virtual void SAL_CALL
  72         seek(sal_Int64 location) override;
  73
  74
  75         virtual sal_Int64 SAL_CALL
  76         getPosition() override;
  77
  78
  79         virtual sal_Int64 SAL_CALL
  80         getLength() override;
  81
  82     private:
  83         std::mutex m_aMutex;
  84         oslFileHandle m_tmpfl;
  85         sal_uInt64 m_nLength;
  86     };
  87 }
  88
  89 #endif
  90
  91 /* vim:set shiftwidth=4 softtabstop=4 expandtab: */