ucb/source/ucp/gio/gio_inputstream.cxx

   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 #include <sal/config.h>
  21
  22 #include <com/sun/star/io/BufferSizeExceededException.hpp>
  23 #include <com/sun/star/io/NotConnectedException.hpp>
  24
  25 #include "gio_inputstream.hxx"
  26 #include "gio_content.hxx"
  27
  28 namespace gio
  29 {
  30
  31 InputStream::InputStream(GFileInputStream *pStream): mpStream(pStream)
  32 {
  33     if (!mpStream)
  34         throw css::io::NotConnectedException();
  35 }
  36
  37 InputStream::~InputStream()
  38 {
  39     closeInput();
  40 }
  41
  42 sal_Int32 SAL_CALL InputStream::available()
  43 {
  44     return 0;
  45 }
  46
  47 void SAL_CALL InputStream::closeInput()
  48 {
  49     if (mpStream)
  50         g_input_stream_close(G_INPUT_STREAM(mpStream), nullptr, nullptr);
  51 }
  52
  53 void SAL_CALL InputStream::skipBytes( sal_Int32 nBytesToSkip )
  54 {
  55     // Conservatively call readBytes and discard the read data, but given this
  56     // InputStream will always be wrapped in comphelper::OSeekableInputWrapper,
  57     // this function will never be called anyway:
  58     css::uno::Sequence<sal_Int8> data;
  59     readBytes(data, nBytesToSkip);
  60 }
  61
  62 sal_Int32 SAL_CALL InputStream::readBytes( css::uno::Sequence< sal_Int8 >& aData, sal_Int32 nBytesToRead )
  63 {
  64     if (!mpStream)
  65         throw css::io::NotConnectedException();
  66
  67     try
  68     {
  69         aData.realloc( nBytesToRead );
  70     }
  71     catch ( const css::uno::Exception & )
  72     {
  73         throw css::io::BufferSizeExceededException();
  74     }
  75
  76     gsize nBytesRead = 0;
  77     GError *pError=nullptr;
  78     if (!g_input_stream_read_all(G_INPUT_STREAM(mpStream), aData.getArray(), nBytesToRead, &nBytesRead, nullptr, &pError))
  79         convertToIOException(pError, static_cast< cppu::OWeakObject * >(this));
  80     aData.realloc(nBytesRead);
  81     return nBytesRead;
  82 }
  83
  84 sal_Int32 SAL_CALL InputStream::readSomeBytes( css::uno::Sequence< sal_Int8 >& aData, sal_Int32 nMaxBytesToRead )
  85 {
  86     return readBytes(aData, nMaxBytesToRead);
  87 }
  88
  89 }
  90
  91 /* vim:set shiftwidth=4 softtabstop=4 expandtab: */