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// file : libcommon/common/buffer.hxx
// author : Boris Kolpackov <boris@codesynthesis.com>
// copyright : Copyright (c) 2005-2011 Code Synthesis Tools CC
// license : GNU GPL v2; see accompanying LICENSE file
#ifndef LIBCOMMON_COMMON_BUFFER_HXX
#define LIBCOMMON_COMMON_BUFFER_HXX
#include <cstddef> // std::size_t
#include <cstring> // std::{memcmp,memcpy}
struct buffer
{
~buffer ()
{
delete[] data_;
}
buffer ()
: data_ (0), size_ (0)
{
}
buffer (const void* data, std::size_t size)
: data_ (0), size_ (size)
{
data_ = new char[size_];
std::memcpy (data_, data, size_);
}
buffer (const buffer& y)
: data_ (0), size_ (0)
{
assign (y.data_, y.size_);
}
buffer&
operator= (const buffer& y)
{
if (this != &y)
assign (y.data_, y.size_);
return *this;
}
void
assign (const void* data, std::size_t size)
{
if (size_ < size)
{
char* p (new char[size]);
delete[] data_;
data_ = p;
}
std::memcpy (data_, data, size);
size_ = size;
}
char*
data ()
{
return data_;
}
const char*
data () const
{
return data_;
}
std::size_t
size () const
{
return size_;
}
bool
operator== (const buffer& y) const
{
return size_ == y.size_ && std::memcmp (data_, y.data_, size_) == 0;
}
private:
char* data_;
std::size_t size_;
};
#endif // LIBCOMMON_COMMON_BUFFER_HXX
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