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qpdf/include/qpdf/Pl_OStream.hh
2022-05-03 18:54:51 -04:00

70 lines
1.8 KiB
C++

// Copyright (c) 2005-2022 Jay Berkenbilt
//
// This file is part of qpdf.
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
// http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.
//
// Versions of qpdf prior to version 7 were released under the terms
// of version 2.0 of the Artistic License. At your option, you may
// continue to consider qpdf to be licensed under those terms. Please
// see the manual for additional information.
// End-of-line pipeline that simply writes its data to a stdio FILE* object.
#ifndef PL_OSTREAM_HH
#define PL_OSTREAM_HH
#include <qpdf/Pipeline.hh>
#include <iostream>
//
// This pipeline is reusable.
//
class QPDF_DLL_CLASS Pl_OStream: public Pipeline
{
public:
// os is externally maintained; this class just writes to and
// flushes it. It does not close it.
QPDF_DLL
Pl_OStream(char const* identifier, std::ostream& os);
QPDF_DLL
virtual ~Pl_OStream();
QPDF_DLL
virtual void write(unsigned char const* buf, size_t len);
QPDF_DLL
virtual void finish();
private:
class QPDF_DLL_PRIVATE Members
{
friend class Pl_OStream;
public:
QPDF_DLL
~Members() = default;
private:
Members(std::ostream&);
Members(Members const&) = delete;
std::ostream& os;
};
std::shared_ptr<Members> m;
};
#endif // PL_OSTREAM_HH