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// Copyright (c) 2005-2024 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.
#ifndef BUFFER_HH
#define BUFFER_HH
#include <qpdf/DLL.h>
#include <qpdf/PointerHolder.hh> // unused -- remove in qpdf 12 (see #785)
#include <cstddef>
#include <memory>
#include <string>
class Buffer
{
public:
QPDF_DLL
Buffer();
// Create a Buffer object whose memory is owned by the class and will be freed when the Buffer
// object is destroyed.
QPDF_DLL
Buffer(size_t size);
QPDF_DLL
Buffer(std::string&& content);
// Create a Buffer object whose memory is owned by the caller and will not be freed when the
// Buffer is destroyed.
QPDF_DLL
Buffer(unsigned char* buf, size_t size);
QPDF_DLL
Buffer(std::string& content);
[[deprecated("Move Buffer or use Buffer::copy instead")]] QPDF_DLL Buffer(Buffer const&);
[[deprecated("Move Buffer or use Buffer::copy instead")]] QPDF_DLL Buffer&
operator=(Buffer const&);
QPDF_DLL
Buffer(Buffer&&) noexcept;
QPDF_DLL
Buffer& operator=(Buffer&&) noexcept;
QPDF_DLL
size_t getSize() const;
QPDF_DLL
unsigned char const* getBuffer() const;
QPDF_DLL
unsigned char* getBuffer();
// Create a new copy of the Buffer. The new Buffer owns an independent copy of the data.
QPDF_DLL
Buffer copy() const;
// Only used during CI testing.
// ABI: remove when removing copy constructor / assignment operator
static void setTestMode() noexcept;
private:
class Members
{
friend class Buffer;
public:
QPDF_DLL
~Members();
private:
Members(size_t size, unsigned char* buf, bool own_memory);
Members(std::string&& content);
Members(Members const&) = delete;
std::string str;
bool own_memory;
size_t size;
unsigned char* buf;
};
void copy(Buffer const&);
std::unique_ptr<Members> m;
};
#endif // BUFFER_HH
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