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#include <qpdf/Buffer.hh>
#include <cstring>
Buffer::Members::Members(size_t size, unsigned char* buf, bool own_memory) :
own_memory(own_memory),
size(size),
buf(nullptr)
{
if (own_memory) {
this->buf = (size ? new unsigned char[size] : nullptr);
} else {
this->buf = buf;
}
}
Buffer::Members::~Members()
{
if (this->own_memory) {
delete[] this->buf;
}
}
Buffer::Buffer() :
m(new Members(0, nullptr, true))
{
}
Buffer::Buffer(size_t size) :
m(new Members(size, nullptr, true))
{
}
Buffer::Buffer(unsigned char* buf, size_t size) :
m(new Members(size, buf, false))
{
}
Buffer::Buffer(Buffer const& rhs)
{
copy(rhs);
}
Buffer&
Buffer::operator=(Buffer const& rhs)
{
copy(rhs);
return *this;
}
Buffer::Buffer(Buffer&& rhs) noexcept :
m(std::move(rhs.m))
{
}
Buffer&
Buffer::operator=(Buffer&& rhs) noexcept
{
std::swap(this->m, rhs.m);
return *this;
}
void
Buffer::copy(Buffer const& rhs)
{
if (this != &rhs) {
this->m =
std::unique_ptr<Members>(new Members(rhs.m->size, nullptr, true));
if (this->m->size) {
memcpy(this->m->buf, rhs.m->buf, this->m->size);
}
}
}
size_t
Buffer::getSize() const
{
return this->m->size;
}
unsigned char const*
Buffer::getBuffer() const
{
return this->m->buf;
}
unsigned char*
Buffer::getBuffer()
{
return this->m->buf;
}
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