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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.
139 lines
5.2 KiB
C++
139 lines
5.2 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_FileSystem.hxx>
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#include <OSD_FileSystemSelector.hxx>
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#include <OSD_LocalFileSystem.hxx>
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IMPLEMENT_STANDARD_RTTIEXT(OSD_FileSystem, Standard_Transient)
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//=======================================================================
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// function : createDefaultFileSystem
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// purpose :
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//=======================================================================
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static Handle(OSD_FileSystem) createDefaultFileSystem()
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{
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Handle(OSD_FileSystemSelector) aSystem = new OSD_FileSystemSelector();
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aSystem->AddProtocol (new OSD_LocalFileSystem());
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return aSystem;
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}
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//=======================================================================
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// function : OSD_FileSystem
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// purpose :
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//=======================================================================
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OSD_FileSystem::OSD_FileSystem()
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{
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}
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//=======================================================================
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// function : ~OSD_FileSystem
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// purpose :
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//=======================================================================
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OSD_FileSystem::~OSD_FileSystem()
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{
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}
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//=======================================================================
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// function : DefaultFileSystem
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// purpose :
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//=======================================================================
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const Handle(OSD_FileSystem)& OSD_FileSystem::DefaultFileSystem()
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{
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static const Handle(OSD_FileSystem) aDefSystem = createDefaultFileSystem();
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return aDefSystem;
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}
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//=======================================================================
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// function : AddDefaultProtocol
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// purpose :
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//=======================================================================
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void OSD_FileSystem::AddDefaultProtocol (const Handle(OSD_FileSystem)& theFileSystem, bool theIsPreferred)
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{
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Handle(OSD_FileSystemSelector) aFileSelector = Handle(OSD_FileSystemSelector)::DownCast (DefaultFileSystem());
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aFileSelector->AddProtocol (theFileSystem, theIsPreferred);
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}
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//=======================================================================
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// function : RemoveDefaultProtocol
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// purpose :
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//=======================================================================
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void OSD_FileSystem::RemoveDefaultProtocol (const Handle(OSD_FileSystem)& theFileSystem)
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{
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Handle(OSD_FileSystemSelector) aFileSelector = Handle(OSD_FileSystemSelector)::DownCast (DefaultFileSystem());
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aFileSelector->RemoveProtocol (theFileSystem);
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}
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//=======================================================================
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// function : openIStream
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// purpose :
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//=======================================================================
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std::shared_ptr<std::istream> OSD_FileSystem::OpenIStream (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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const std::shared_ptr<std::istream>& theOldStream)
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{
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Standard_ASSERT_RAISE (theOffset >= -1, "Incorrect negative stream position during stream opening");
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std::shared_ptr<std::istream> aNewStream;
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std::shared_ptr<OSD_IStreamBuffer> anOldStream = std::dynamic_pointer_cast<OSD_IStreamBuffer> (theOldStream);
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if (anOldStream.get() != NULL
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&& theUrl.IsEqual (anOldStream->Url().c_str())
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&& IsOpenIStream (anOldStream))
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{
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if (!anOldStream->good())
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{
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// Reset flags without re-opening
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anOldStream->clear();
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}
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aNewStream = anOldStream;
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if (theOffset >= 0)
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{
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aNewStream->seekg ((std::streamoff )theOffset, std::ios_base::beg);
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}
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}
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if (aNewStream.get() == NULL)
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{
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std::shared_ptr<std::streambuf> aFileBuf = OpenStreamBuffer (theUrl, theMode | std::ios_base::in);
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if (aFileBuf.get() == NULL)
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{
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return std::shared_ptr<std::istream>();
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}
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aNewStream.reset (new OSD_IStreamBuffer (theUrl.ToCString(), aFileBuf));
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if (theOffset > 0)
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{
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aNewStream->seekg ((std::streamoff )theOffset, std::ios_base::beg);
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}
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}
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return aNewStream;
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}
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//=======================================================================
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// function : OpenOStream
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// purpose :
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//=======================================================================
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std::shared_ptr<std::ostream> OSD_FileSystem::OpenOStream (const TCollection_AsciiString& theUrl,
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const std::ios_base::openmode theMode)
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{
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std::shared_ptr<std::ostream> aNewStream;
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std::shared_ptr<std::streambuf> aFileBuf = OpenStreamBuffer (theUrl, theMode | std::ios_base::out);
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if (aFileBuf.get() == NULL)
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{
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return std::shared_ptr<std::ostream>();
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}
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aNewStream.reset(new OSD_OStreamBuffer (theUrl.ToCString(), aFileBuf));
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return aNewStream;
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}
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