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/* Drizzle
* Copyright (C) 2011 Olaf van der Spek
*
* This program is free software: you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation, either version 2 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program. If not, see <http://www.gnu.org/licenses/>.
*/
#pragma once
#include <cstddef>
#include <cstring>
#include <ostream>
#include <string>
template <class T>
class data_ref_basic
{
public:
data_ref_basic()
{
clear();
}
template <class U>
data_ref_basic(const U& c)
{
assign(&*c.begin(), &*c.end());
}
data_ref_basic(const void* b, const void* e)
{
assign(b, e);
}
data_ref_basic(const void* b, size_t sz)
{
assign(b, sz);
}
explicit data_ref_basic(const char* b)
{
assign(b, strlen(b));
}
void clear()
{
begin_ = end_ = reinterpret_cast<T>("");
}
void assign(const void* b, const void* e)
{
begin_ = reinterpret_cast<T>(b);
end_ = reinterpret_cast<T>(e);
}
void assign(const void* b, size_t sz)
{
begin_ = reinterpret_cast<T>(b);
end_ = begin_ + sz;
}
T begin() const
{
return begin_;
}
T end() const
{
return end_;
}
T data() const
{
return begin();
}
size_t size() const
{
return end() - begin();
}
bool empty() const
{
return begin() == end();
}
operator std::string() const
{
return to_string(*this);
}
private:
T begin_;
T end_;
};
typedef data_ref_basic<const unsigned char*> data_ref;
typedef data_ref_basic<const char*> str_ref;
inline std::ostream& operator<<(std::ostream& os, str_ref v)
{
return os.write(v.data(), v.size());
}
inline std::string to_string(str_ref v)
{
return std::string(v.data(), v.size());
}
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