///////////////////////////////////////////////////////////////////////////
//
// Copyright (c) 2012-2017 DreamWorks Animation LLC
//
// All rights reserved. This software is distributed under the
// Mozilla Public License 2.0 ( http://www.mozilla.org/MPL/2.0/ )
//
// Redistributions of source code must retain the above copyright
// and license notice and the following restrictions and disclaimer.
//
// *     Neither the name of DreamWorks Animation nor the names of
// its contributors may be used to endorse or promote products derived
// from this software without specific prior written permission.
//
// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
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// THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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// IN NO EVENT SHALL THE COPYRIGHT HOLDERS' AND CONTRIBUTORS' AGGREGATE
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///////////////////////////////////////////////////////////////////////////

/// @file TempFile.h

#ifndef OPENVDB_IO_TEMPFILE_HAS_BEEN_INCLUDED
#define OPENVDB_IO_TEMPFILE_HAS_BEEN_INCLUDED

#include <openvdb/version.h>
#include <memory>
#include <ostream>


namespace openvdb {
OPENVDB_USE_VERSION_NAMESPACE
namespace OPENVDB_VERSION_NAME {
namespace io {

/// Output stream to a unique temporary file
class OPENVDB_API TempFile: public std::ostream
{
public:
    /// @brief Create and open a unique file.
    /// @details On UNIX systems, the file is created in the directory specified by
    /// the environment variable @c OPENVDB_TEMP_DIR, if that variable is defined,
    /// or else in the directory specified by @c TMPDIR, if that variable is defined.
    /// Otherwise (and on non-UNIX systems), the file is created in the system default
    /// temporary directory.
    TempFile();
    ~TempFile();

    /// Return the path to the temporary file.
    const std::string& filename() const;

    /// Return @c true if the file is open for writing.
    bool is_open() const;

    /// Close the file.
    void close();

private:
    struct TempFileImpl;
    std::unique_ptr<TempFileImpl, DeleteUnique> mImpl;
};

} // namespace io
} // namespace OPENVDB_VERSION_NAME
} // namespace openvdb

#endif // OPENVDB_IO_TEMPFILE_HAS_BEEN_INCLUDED

// Copyright (c) 2012-2017 DreamWorks Animation LLC
// All rights reserved. This software is distributed under the
// Mozilla Public License 2.0 ( http://www.mozilla.org/MPL/2.0/ )
