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/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
/*
* This Source Code Form is subject to the terms of the Mozilla Public
* License, v. 2.0. If a copy of the MPL was not distributed with this
* file, You can obtain one at http://mozilla.org/MPL/2.0/.
*/
#ifndef __ORCUS_PSTRING_HPP__
#define __ORCUS_PSTRING_HPP__
#include "orcus/env.hpp"
#include <cstdlib>
#include <string>
#include <cstring>
#include <ostream>
namespace orcus {
class string_pool;
/**
* This string class does not store any char arrays, but it only stores the
* position of the first char in the memory, and the size of the char array.
*/
class ORCUS_DLLPUBLIC pstring
{
friend ::std::ostream& operator<< (::std::ostream& os, const pstring& str);
public:
pstring() : m_pos(NULL), m_size(0) {}
pstring(const char* _pos) : m_pos(_pos) { m_size = std::strlen(_pos); }
pstring(const char* _pos, size_t _size) : m_pos(_pos), m_size(_size) {}
::std::string str() const { return ::std::string(m_pos, m_size); }
size_t size() const { return m_size; }
const char& operator[](size_t idx) const { return m_pos[idx]; }
pstring& operator= (const pstring& r)
{
m_pos = r.m_pos;
m_size = r.m_size;
return *this;
}
const char* get() const { return m_pos; }
bool operator== (const pstring& r) const;
bool operator!= (const pstring& r) const
{
return !operator==(r);
}
bool operator< (const pstring& r) const;
bool operator== (const char* _str) const;
bool operator!= (const char* _str) const
{
return !operator==(_str);
}
pstring trim() const;
bool empty() const { return m_size == 0; }
void clear()
{
m_pos = NULL;
m_size = 0;
}
struct ORCUS_DLLPUBLIC hash
{
size_t operator() (const pstring& val) const;
};
private:
const char* m_pos;
size_t m_size;
};
inline ::std::ostream& operator<< (::std::ostream& os, const pstring& str)
{
return os << str.str();
}
ORCUS_DLLPUBLIC std::string operator+ (const std::string& left, const pstring& right);
ORCUS_DLLPUBLIC std::string& operator+= (std::string& left, const pstring& right);
}
#endif
/* vim:set shiftwidth=4 softtabstop=4 expandtab: */
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