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65acdce54c
Removed usage of std::auto_ptr. opencascade::std workarounds for VS2008 have been dropped, when possible. OCCT_NO_RVALUE_REFERENCE workaround for VS2008 has been removed.
92 lines
3.9 KiB
C++
92 lines
3.9 KiB
C++
// Copyright (c) 2021 OPEN CASCADE SAS
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//
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// This file is part of Open CASCADE Technology software library.
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//
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// This library is free software; you can redistribute it and/or modify it under
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// the terms of the GNU Lesser General Public License version 2.1 as published
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// by the Free Software Foundation, with special exception defined in the file
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// OCCT_LGPL_EXCEPTION.txt. Consult the file LICENSE_LGPL_21.txt included in OCCT
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// distribution for complete text of the license and disclaimer of any warranty.
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//
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// Alternatively, this file may be used under the terms of Open CASCADE
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// commercial license or contractual agreement.
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#include <OSD_LocalFileSystem.hxx>
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#include <OSD_OpenFile.hxx>
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#include <OSD_Path.hxx>
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#include <Standard_Assert.hxx>
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IMPLEMENT_STANDARD_RTTIEXT(OSD_LocalFileSystem, OSD_FileSystem)
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//=======================================================================
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// function : IsSupportedPath
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// purpose :
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//=======================================================================
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Standard_Boolean OSD_LocalFileSystem::IsSupportedPath (const TCollection_AsciiString& theUrl) const
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{
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return !OSD_Path::IsRemoteProtocolPath (theUrl.ToCString());
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}
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//=======================================================================
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// function : IsOpenIStream
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// purpose :
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//=======================================================================
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Standard_Boolean OSD_LocalFileSystem::IsOpenIStream (const std::shared_ptr<std::istream>& theStream) const
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{
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std::shared_ptr<OSD_IStreamBuffer> aFileStream = std::dynamic_pointer_cast<OSD_IStreamBuffer> (theStream);
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if (aFileStream.get() == NULL)
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{
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return false;
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}
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const std::filebuf* aFileBuf = dynamic_cast<const std::filebuf*> (aFileStream->rdbuf());
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return (aFileBuf != NULL) ? aFileBuf->is_open() : false;
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}
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//=======================================================================
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// function : IsOpenOStream
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// purpose :
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//=======================================================================
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Standard_Boolean OSD_LocalFileSystem::IsOpenOStream (const std::shared_ptr<std::ostream>& theStream) const
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{
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std::shared_ptr<OSD_OStreamBuffer> aFileStream = std::dynamic_pointer_cast<OSD_OStreamBuffer> (theStream);
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if (aFileStream.get() == NULL)
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{
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return false;
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}
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const std::filebuf* aFileBuf = dynamic_cast<const std::filebuf*> (aFileStream->rdbuf());
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return (aFileBuf != NULL) ? aFileBuf->is_open() : false;
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}
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//=======================================================================
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// function : OpenStreamBuffer
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// purpose :
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//=======================================================================
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std::shared_ptr<std::streambuf> OSD_LocalFileSystem::OpenStreamBuffer (const TCollection_AsciiString& theUrl,
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const std::ios_base::openmode theMode,
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const int64_t theOffset,
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int64_t* theOutBufSize)
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{
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Standard_ASSERT_RAISE (theOffset >= 0, "Incorrect negative stream position during stream buffer opening");
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std::shared_ptr<std::filebuf> aNewBuf(new std::filebuf());
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if (!OSD_OpenStream (*aNewBuf, TCollection_ExtendedString(theUrl), theMode))
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{
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return std::shared_ptr<std::streambuf>();
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}
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// if buffer is opened for read, find the file size
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if (theOutBufSize && ((theMode & std::ios::in) != 0))
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{
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*theOutBufSize = (int64_t )aNewBuf->pubseekoff (0, std::ios_base::end, std::ios_base::in);
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if (aNewBuf->pubseekoff ((std::streamoff )theOffset, std::ios_base::beg, std::ios_base::in) < 0)
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{
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*theOutBufSize = 0;
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return std::shared_ptr<std::streambuf>();
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}
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}
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else if (theOffset > 0 && aNewBuf->pubseekoff ((std::streamoff )theOffset, std::ios_base::beg,
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(theMode & std::ios::in) != 0 ? std::ios_base::in : std::ios_base::out) < 0)
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{
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return std::shared_ptr<std::streambuf>();
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}
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return aNewBuf;
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}
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