Buffer.cc
1.62 KB
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#include <qpdf/assert_test.h>
#include <qpdf/Buffer.hh>
#include <cstring>
class Buffer::Members
{
friend class Buffer;
public:
Members() = default;
// Constructor for Buffers that don't own the memory.
Members(size_t size, unsigned char* buf) :
size(size),
buf(buf)
{
}
Members(std::string&& content) :
str(std::move(content)),
size(str.size()),
buf(reinterpret_cast<unsigned char*>(str.data()))
{
}
Members(Members const&) = delete;
~Members() = default;
private:
std::string str;
size_t size;
unsigned char* buf;
};
Buffer::Buffer() :
m(std::make_unique<Members>())
{
}
Buffer::Buffer(size_t size) :
m(std::make_unique<Members>(std::string(size, '\0')))
{
}
Buffer::Buffer(std::string&& content) :
m(std::make_unique<Members>(std::move(content)))
{
}
Buffer::Buffer(unsigned char* buf, size_t size) :
m(std::make_unique<Members>(size, buf))
{
}
Buffer::Buffer(std::string& content) :
m(std::make_unique<Members>(content.size(), reinterpret_cast<unsigned char*>(content.data())))
{
}
Buffer::Buffer(Buffer&& rhs) noexcept :
m(std::move(rhs.m))
{
}
Buffer&
Buffer::operator=(Buffer&& rhs) noexcept
{
std::swap(m, rhs.m);
return *this;
}
Buffer::~Buffer() = default;
size_t
Buffer::getSize() const
{
return m->size;
}
unsigned char const*
Buffer::getBuffer() const
{
return m->buf;
}
unsigned char*
Buffer::getBuffer()
{
return m->buf;
}
Buffer
Buffer::copy() const
{
if (m->size == 0) {
return {};
}
return {std::string(reinterpret_cast<char const*>(m->buf), m->size)};
}