628 lines
19 KiB
Plaintext
628 lines
19 KiB
Plaintext
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// xstring internal header (from <string>)
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#ifndef _XSTRING_
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#define _XSTRING_
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#include <xmemory>
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#ifdef _MSC_VER
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#pragma pack(push,8)
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#endif /* _MSC_VER */
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#include <xutility>
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_STD_BEGIN
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_CRTIMP2 void __cdecl _Xlen();
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_CRTIMP2 void __cdecl _Xran();
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// TEMPLATE CLASS basic_string
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template<class _E,
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class _Tr = char_traits<_E>,
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class _A = allocator<_E> >
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class basic_string {
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public:
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typedef basic_string<_E, _Tr, _A> _Myt;
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typedef typename _A::size_type size_type;
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typedef typename _A::difference_type difference_type;
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typedef typename _A::pointer pointer;
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typedef typename _A::const_pointer const_pointer;
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typedef typename _A::reference reference;
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typedef typename _A::const_reference const_reference;
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typedef typename _A::value_type value_type;
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typedef typename _A::pointer iterator;
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typedef typename _A::const_pointer const_iterator;
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typedef reverse_iterator<const_iterator, value_type,
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const_reference, const_pointer, difference_type>
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const_reverse_iterator;
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typedef reverse_iterator<iterator, value_type,
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reference, pointer, difference_type>
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reverse_iterator;
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explicit basic_string(const _A& _Al = _A())
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: allocator(_Al) {_Tidy(); }
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basic_string(const _Myt& _X)
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: allocator(_X.allocator)
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{_Tidy(), assign(_X, 0, npos); }
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basic_string(const _Myt& _X, size_type _P, size_type _M,
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const _A& _Al = _A())
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: allocator(_Al) {_Tidy(), assign(_X, _P, _M); }
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basic_string(const _E *_S, size_type _N,
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const _A& _Al = _A())
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: allocator(_Al) {_Tidy(), assign(_S, _N); }
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basic_string(const _E *_S, const _A& _Al = _A())
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: allocator(_Al) {_Tidy(), assign(_S); }
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basic_string(size_type _N, _E _C, const _A& _Al = _A())
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: allocator(_Al) {_Tidy(), assign(_N, _C); }
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typedef const_iterator _It;
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basic_string(_It _F, _It _L, const _A& _Al = _A())
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: allocator(_Al) {_Tidy(); assign(_F, _L); }
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~basic_string()
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{_Tidy(true); }
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typedef _Tr traits_type;
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typedef _A allocator_type;
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enum _Mref {_FROZEN = 255};
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static const size_type npos;
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_Myt& operator=(const _Myt& _X)
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{return (assign(_X)); }
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_Myt& operator=(const _E *_S)
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{return (assign(_S)); }
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_Myt& operator=(_E _C)
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{return (assign(1, _C)); }
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_Myt& operator+=(const _Myt& _X)
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{return (append(_X)); }
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_Myt& operator+=(const _E *_S)
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{return (append(_S)); }
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_Myt& operator+=(_E _C)
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{return (append(1, _C)); }
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_Myt& append(const _Myt& _X)
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{return (append(_X, 0, npos)); }
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_Myt& append(const _Myt& _X, size_type _P, size_type _M)
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{if (_X.size() < _P)
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_Xran();
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size_type _N = _X.size() - _P;
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if (_N < _M)
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_M = _N;
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if (npos - _Len <= _M)
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_Xlen();
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if (0 < _M && _Grow(_N = _Len + _M))
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{_Tr::copy(_Ptr + _Len, &_X.c_str()[_P], _M);
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_Eos(_N); }
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return (*this); }
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_Myt& append(const _E *_S, size_type _M)
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{if (npos - _Len <= _M)
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_Xlen();
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size_type _N;
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if (0 < _M && _Grow(_N = _Len + _M))
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{_Tr::copy(_Ptr + _Len, _S, _M);
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_Eos(_N); }
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return (*this); }
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_Myt& append(const _E *_S)
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{return (append(_S, _Tr::length(_S))); }
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_Myt& append(size_type _M, _E _C)
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{if (npos - _Len <= _M)
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_Xlen();
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size_type _N;
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if (0 < _M && _Grow(_N = _Len + _M))
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{_Tr::assign(_Ptr + _Len, _M, _C);
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_Eos(_N); }
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return (*this); }
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_Myt& append(_It _F, _It _L)
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{return (replace(end(), end(), _F, _L)); }
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_Myt& assign(const _Myt& _X)
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{return (assign(_X, 0, npos)); }
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_Myt& assign(const _Myt& _X, size_type _P, size_type _M)
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{if (_X.size() < _P)
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_Xran();
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size_type _N = _X.size() - _P;
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if (_M < _N)
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_N = _M;
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if (this == &_X)
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erase((size_type)(_P + _N)), erase(0, _P);
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else if (0 < _N && _N == _X.size()
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&& _Refcnt(_X.c_str()) < _FROZEN - 1
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&& allocator == _X.allocator)
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{_Tidy(true);
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_Ptr = (_E *)_X.c_str();
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_Len = _X.size();
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_Res = _X.capacity();
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++_Refcnt(_Ptr); }
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else if (_Grow(_N, true))
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{_Tr::copy(_Ptr, &_X.c_str()[_P], _N);
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_Eos(_N); }
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return (*this); }
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_Myt& assign(const _E *_S, size_type _N)
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{if (_Grow(_N, true))
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{_Tr::copy(_Ptr, _S, _N);
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_Eos(_N); }
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return (*this); }
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_Myt& assign(const _E *_S)
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{return (assign(_S, _Tr::length(_S))); }
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_Myt& assign(size_type _N, _E _C)
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{if (_N == npos)
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_Xlen();
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if (_Grow(_N, true))
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{_Tr::assign(_Ptr, _N, _C);
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_Eos(_N); }
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return (*this); }
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_Myt& assign(_It _F, _It _L)
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{return (replace(begin(), end(), _F, _L)); }
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_Myt& insert(size_type _P0, const _Myt& _X)
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{return (insert(_P0, _X, 0, npos)); }
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_Myt& insert(size_type _P0, const _Myt& _X, size_type _P,
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size_type _M)
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{if (_Len < _P0 || _X.size() < _P)
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_Xran();
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size_type _N = _X.size() - _P;
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if (_N < _M)
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_M = _N;
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if (npos - _Len <= _M)
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_Xlen();
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if (0 < _M && _Grow(_N = _Len + _M))
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{_Tr::move(_Ptr + _P0 + _M, _Ptr + _P0, _Len - _P0);
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_Tr::copy(_Ptr + _P0, &_X.c_str()[_P], _M);
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_Eos(_N); }
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return (*this); }
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_Myt& insert(size_type _P0, const _E *_S, size_type _M)
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{if (_Len < _P0)
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_Xran();
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if (npos - _Len <= _M)
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_Xlen();
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size_type _N;
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if (0 < _M && _Grow(_N = _Len + _M))
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{_Tr::move(_Ptr + _P0 + _M, _Ptr + _P0, _Len - _P0);
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_Tr::copy(_Ptr + _P0, _S, _M);
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_Eos(_N); }
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return (*this); }
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_Myt& insert(size_type _P0, const _E *_S)
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{return (insert(_P0, _S, _Tr::length(_S))); }
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_Myt& insert(size_type _P0, size_type _M, _E _C)
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{if (_Len < _P0)
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_Xran();
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if (npos - _Len <= _M)
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_Xlen();
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size_type _N;
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if (0 < _M && _Grow(_N = _Len + _M))
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{_Tr::move(_Ptr + _P0 + _M, _Ptr + _P0, _Len - _P0);
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_Tr::assign(_Ptr + _P0, _M, _C);
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_Eos(_N); }
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return (*this); }
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iterator insert(iterator _P, _E _C)
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{size_type _P0 = _Pdif(_P, begin());
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insert(_P0, 1, _C);
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return (begin() + _P0); }
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void insert(iterator _P, size_type _M, _E _C)
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{size_type _P0 = _Pdif(_P, begin());
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insert(_P0, _M, _C); }
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void insert(iterator _P, _It _F, _It _L)
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{replace(_P, _P, _F, _L); }
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_Myt& erase(size_type _P0 = 0, size_type _M = npos)
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{if (_Len < _P0)
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_Xran();
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_Split();
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if (_Len - _P0 < _M)
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_M = _Len - _P0;
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if (0 < _M)
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{_Tr::move(_Ptr + _P0, _Ptr + _P0 + _M,
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_Len - _P0 - _M);
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size_type _N = _Len - _M;
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if (_Grow(_N))
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_Eos(_N); }
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return (*this); }
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iterator erase(iterator _P)
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{size_t _M = _Pdif(_P, begin());
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erase(_M, 1);
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return (_Psum(_Ptr, _M)); }
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iterator erase(iterator _F, iterator _L)
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{size_t _M = _Pdif(_F, begin());
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erase(_M, _Pdif(_L, _F));
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return (_Psum(_Ptr, _M)); }
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_Myt& replace(size_type _P0, size_type _N0, const _Myt& _X)
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{return (replace(_P0, _N0, _X, 0, npos)); }
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_Myt& replace(size_type _P0, size_type _N0, const _Myt& _X,
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size_type _P, size_type _M)
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{if (_Len < _P0 || _X.size() < _P)
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_Xran();
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if (_Len - _P0 < _N0)
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_N0 = _Len - _P0;
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size_type _N = _X.size() - _P;
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if (_N < _M)
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_M = _N;
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if (npos - _M <= _Len - _N0)
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_Xlen();
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_Split();
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size_type _Nm = _Len - _N0 - _P0;
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if (_M < _N0)
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_Tr::move(_Ptr + _P0 + _M, _Ptr + _P0 + _N0, _Nm);
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if ((0 < _M || 0 < _N0) && _Grow(_N = _Len + _M - _N0))
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{if (_N0 < _M)
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_Tr::move(_Ptr + _P0 + _M, _Ptr + _P0 + _N0, _Nm);
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_Tr::copy(_Ptr + _P0, &_X.c_str()[_P], _M);
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_Eos(_N); }
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return (*this); }
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_Myt& replace(size_type _P0, size_type _N0, const _E *_S,
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size_type _M)
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{if (_Len < _P0)
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_Xran();
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if (_Len - _P0 < _N0)
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_N0 = _Len - _P0;
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if (npos - _M <= _Len - _N0)
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_Xlen();
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_Split();
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size_type _Nm = _Len - _N0 - _P0;
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if (_M < _N0)
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_Tr::move(_Ptr + _P0 + _M, _Ptr + _P0 + _N0, _Nm);
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size_type _N;
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if ((0 < _M || 0 < _N0) && _Grow(_N = _Len + _M - _N0))
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{if (_N0 < _M)
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_Tr::move(_Ptr + _P0 + _M, _Ptr + _P0 + _N0, _Nm);
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_Tr::copy(_Ptr + _P0, _S, _M);
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_Eos(_N); }
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return (*this); }
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_Myt& replace(size_type _P0, size_type _N0, const _E *_S)
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{return (replace(_P0, _N0, _S, _Tr::length(_S))); }
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_Myt& replace(size_type _P0, size_type _N0,
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size_type _M, _E _C)
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{if (_Len < _P0)
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_Xran();
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if (_Len - _P0 < _N0)
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_N0 = _Len - _P0;
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if (npos - _M <= _Len - _N0)
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_Xlen();
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_Split();
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size_type _Nm = _Len - _N0 - _P0;
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if (_M < _N0)
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_Tr::move(_Ptr + _P0 + _M, _Ptr + _P0 + _N0, _Nm);
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size_type _N;
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if ((0 < _M || 0 < _N0) && _Grow(_N = _Len + _M - _N0))
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{if (_N0 < _M)
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_Tr::move(_Ptr + _P0 + _M, _Ptr + _P0 + _N0,
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_Nm);
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_Tr::assign(_Ptr + _P0, _M, _C);
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_Eos(_N); }
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return (*this); }
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_Myt& replace(iterator _F, iterator _L, const _Myt& _X)
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{return (replace(
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_Pdif(_F, begin()), _Pdif(_L, _F), _X)); }
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_Myt& replace(iterator _F, iterator _L, const _E *_S,
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size_type _M)
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{return (replace(
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_Pdif(_F, begin()), _Pdif(_L, _F), _S, _M)); }
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_Myt& replace(iterator _F, iterator _L, const _E *_S)
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{return (replace(
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_Pdif(_F, begin()), _Pdif(_L, _F), _S)); }
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_Myt& replace(iterator _F, iterator _L, size_type _M, _E _C)
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{return (replace(
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_Pdif(_F, begin()), _Pdif(_L, _F), _M, _C)); }
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_Myt& replace(iterator _F1, iterator _L1,
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_It _F2, _It _L2)
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{size_type _P0 = _Pdif(_F1, begin());
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size_type _M = 0;
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_Distance(_F2, _L2, _M);
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replace(_P0, _Pdif(_L1, _F1), _M, _E(0));
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for (_F1 = begin() + _P0; 0 < _M; ++_F1, ++_F2, --_M)
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*_F1 = *_F2;
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return (*this); }
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iterator begin()
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{_Freeze();
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return (_Ptr); }
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const_iterator begin() const
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{return (_Ptr); }
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iterator end()
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{_Freeze();
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return ((iterator)_Psum(_Ptr, _Len)); }
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const_iterator end() const
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{return ((const_iterator)_Psum(_Ptr, _Len)); }
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reverse_iterator rbegin()
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{return (reverse_iterator(end())); }
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const_reverse_iterator rbegin() const
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||
|
|
{return (const_reverse_iterator(end())); }
|
||
|
|
reverse_iterator rend()
|
||
|
|
{return (reverse_iterator(begin())); }
|
||
|
|
const_reverse_iterator rend() const
|
||
|
|
{return (const_reverse_iterator(begin())); }
|
||
|
|
reference at(size_type _P0)
|
||
|
|
{if (_Len <= _P0)
|
||
|
|
_Xran();
|
||
|
|
_Freeze();
|
||
|
|
return (_Ptr[_P0]); }
|
||
|
|
const_reference at(size_type _P0) const
|
||
|
|
{if (_Len <= _P0)
|
||
|
|
_Xran();
|
||
|
|
return (_Ptr[_P0]); }
|
||
|
|
reference operator[](size_type _P0)
|
||
|
|
{if (_Len < _P0 || _Ptr == 0)
|
||
|
|
return ((reference)*_Nullstr());
|
||
|
|
_Freeze();
|
||
|
|
return (_Ptr[_P0]); }
|
||
|
|
const_reference operator[](size_type _P0) const
|
||
|
|
{if (_Ptr == 0)
|
||
|
|
return (*_Nullstr());
|
||
|
|
else
|
||
|
|
return (_Ptr[_P0]); }
|
||
|
|
const _E *c_str() const
|
||
|
|
{return (_Ptr == 0 ? _Nullstr() : _Ptr); }
|
||
|
|
const _E *data() const
|
||
|
|
{return (c_str()); }
|
||
|
|
size_type length() const
|
||
|
|
{return (_Len); }
|
||
|
|
size_type size() const
|
||
|
|
{return (_Len); }
|
||
|
|
size_type max_size() const
|
||
|
|
{size_type _N = allocator.max_size();
|
||
|
|
return (_N <= 2 ? 1 : _N - 2); }
|
||
|
|
void resize(size_type _N, _E _C)
|
||
|
|
{_N <= _Len ? erase(_N) : append(_N - _Len, _C); }
|
||
|
|
void resize(size_type _N)
|
||
|
|
{_N <= _Len ? erase(_N) : append(_N - _Len, _E(0)); }
|
||
|
|
size_type capacity() const
|
||
|
|
{return (_Res); }
|
||
|
|
void reserve(size_type _N = 0)
|
||
|
|
{if (_Res < _N)
|
||
|
|
_Grow(_N); }
|
||
|
|
bool empty() const
|
||
|
|
{return (_Len == 0); }
|
||
|
|
size_type copy(_E *_S, size_type _N, size_type _P0 = 0) const
|
||
|
|
{if (_Len < _P0)
|
||
|
|
_Xran();
|
||
|
|
if (_Len - _P0 < _N)
|
||
|
|
_N = _Len - _P0;
|
||
|
|
if (0 < _N)
|
||
|
|
_Tr::copy(_S, _Ptr + _P0, _N);
|
||
|
|
return (_N); }
|
||
|
|
void swap(_Myt& _X)
|
||
|
|
{if (allocator == _X.allocator)
|
||
|
|
{std::swap(_Ptr, _X._Ptr);
|
||
|
|
std::swap(_Len, _X._Len);
|
||
|
|
std::swap(_Res, _X._Res); }
|
||
|
|
else
|
||
|
|
{_Myt _Ts = *this; *this = _X, _X = _Ts; }}
|
||
|
|
friend void swap(_Myt& _X, _Myt& _Y)
|
||
|
|
{_X.swap(_Y); }
|
||
|
|
size_type find(const _Myt& _X, size_type _P = 0) const
|
||
|
|
{return (find(_X.c_str(), _P, _X.size())); }
|
||
|
|
size_type find(const _E *_S, size_type _P,
|
||
|
|
size_type _N) const
|
||
|
|
{if (_N == 0 && _P <= _Len)
|
||
|
|
return (_P);
|
||
|
|
size_type _Nm;
|
||
|
|
if (_P < _Len && _N <= (_Nm = _Len - _P))
|
||
|
|
{const _E *_U, *_V;
|
||
|
|
for (_Nm -= _N - 1, _V = _Ptr + _P;
|
||
|
|
(_U = _Tr::find(_V, _Nm, *_S)) != 0;
|
||
|
|
_Nm -= (size_type) (_U - _V + 1), _V = _U + 1)
|
||
|
|
if (_Tr::compare(_U, _S, _N) == 0)
|
||
|
|
return (_U - _Ptr); }
|
||
|
|
return (npos); }
|
||
|
|
size_type find(const _E *_S, size_type _P = 0) const
|
||
|
|
{return (find(_S, _P, _Tr::length(_S))); }
|
||
|
|
size_type find(_E _C, size_type _P = 0) const
|
||
|
|
{return (find((const _E *)&_C, _P, 1)); }
|
||
|
|
size_type rfind(const _Myt& _X, size_type _P = npos) const
|
||
|
|
{return (rfind(_X.c_str(), _P, _X.size())); }
|
||
|
|
size_type rfind(const _E *_S, size_type _P,
|
||
|
|
size_type _N) const
|
||
|
|
{if (_N == 0)
|
||
|
|
return (_P < _Len ? _P : _Len);
|
||
|
|
if (_N <= _Len)
|
||
|
|
for (const _E *_U = _Ptr +
|
||
|
|
+ (_P < _Len - _N ? _P : _Len - _N); ; --_U)
|
||
|
|
if (_Tr::eq(*_U, *_S)
|
||
|
|
&& _Tr::compare(_U, _S, _N) == 0)
|
||
|
|
return (_U - _Ptr);
|
||
|
|
else if (_U == _Ptr)
|
||
|
|
break;
|
||
|
|
return (npos); }
|
||
|
|
size_type rfind(const _E *_S, size_type _P = npos) const
|
||
|
|
{return (rfind(_S, _P, _Tr::length(_S))); }
|
||
|
|
size_type rfind(_E _C, size_type _P = npos) const
|
||
|
|
{return (rfind((const _E *)&_C, _P, 1)); }
|
||
|
|
size_type find_first_of(const _Myt& _X,
|
||
|
|
size_type _P = 0) const
|
||
|
|
{return (find_first_of(_X.c_str(), _P, _X.size())); }
|
||
|
|
size_type find_first_of(const _E *_S, size_type _P,
|
||
|
|
size_type _N) const
|
||
|
|
{if (0 < _N && _P < _Len)
|
||
|
|
{const _E *const _V = _Ptr + _Len;
|
||
|
|
for (const _E *_U = _Ptr + _P; _U < _V; ++_U)
|
||
|
|
if (_Tr::find(_S, _N, *_U) != 0)
|
||
|
|
return (_U - _Ptr); }
|
||
|
|
return (npos); }
|
||
|
|
size_type find_first_of(const _E *_S, size_type _P = 0) const
|
||
|
|
{return (find_first_of(_S, _P, _Tr::length(_S))); }
|
||
|
|
size_type find_first_of(_E _C, size_type _P = 0) const
|
||
|
|
{return (find((const _E *)&_C, _P, 1)); }
|
||
|
|
size_type find_last_of(const _Myt& _X,
|
||
|
|
size_type _P = npos) const
|
||
|
|
{return (find_last_of(_X.c_str(), _P, _X.size())); }
|
||
|
|
size_type find_last_of(const _E *_S, size_type _P,
|
||
|
|
size_type _N) const
|
||
|
|
{if (0 < _N && 0 < _Len)
|
||
|
|
for (const _E *_U = _Ptr
|
||
|
|
+ (_P < _Len ? _P : _Len - 1); ; --_U)
|
||
|
|
if (_Tr::find(_S, _N, *_U) != 0)
|
||
|
|
return (_U - _Ptr);
|
||
|
|
else if (_U == _Ptr)
|
||
|
|
break;
|
||
|
|
return (npos); }
|
||
|
|
size_type find_last_of(const _E *_S,
|
||
|
|
size_type _P = npos) const
|
||
|
|
{return (find_last_of(_S, _P, _Tr::length(_S))); }
|
||
|
|
size_type find_last_of(_E _C, size_type _P = npos) const
|
||
|
|
{return (rfind((const _E *)&_C, _P, 1)); }
|
||
|
|
size_type find_first_not_of(const _Myt& _X,
|
||
|
|
size_type _P = 0) const
|
||
|
|
{return (find_first_not_of(_X.c_str(), _P,
|
||
|
|
_X.size())); }
|
||
|
|
size_type find_first_not_of(const _E *_S, size_type _P,
|
||
|
|
size_type _N) const
|
||
|
|
{if (_P < _Len)
|
||
|
|
{const _E *const _V = _Ptr + _Len;
|
||
|
|
for (const _E *_U = _Ptr + _P; _U < _V; ++_U)
|
||
|
|
if (_Tr::find(_S, _N, *_U) == 0)
|
||
|
|
return (_U - _Ptr); }
|
||
|
|
return (npos); }
|
||
|
|
size_type find_first_not_of(const _E *_S,
|
||
|
|
size_type _P = 0) const
|
||
|
|
{return (find_first_not_of(_S, _P, _Tr::length(_S))); }
|
||
|
|
size_type find_first_not_of(_E _C, size_type _P = 0) const
|
||
|
|
{return (find_first_not_of((const _E *)&_C, _P, 1)); }
|
||
|
|
size_type find_last_not_of(const _Myt& _X,
|
||
|
|
size_type _P = npos) const
|
||
|
|
{return (find_last_not_of(_X.c_str(), _P, _X.size())); }
|
||
|
|
size_type find_last_not_of(const _E *_S, size_type _P,
|
||
|
|
size_type _N) const
|
||
|
|
{if (0 < _Len)
|
||
|
|
for (const _E *_U = _Ptr
|
||
|
|
+ (_P < _Len ? _P : _Len - 1); ; --_U)
|
||
|
|
if (_Tr::find(_S, _N, *_U) == 0)
|
||
|
|
return (_U - _Ptr);
|
||
|
|
else if (_U == _Ptr)
|
||
|
|
break;
|
||
|
|
return (npos); }
|
||
|
|
size_type find_last_not_of(const _E *_S,
|
||
|
|
size_type _P = npos) const
|
||
|
|
{return (find_last_not_of(_S, _P, _Tr::length(_S))); }
|
||
|
|
size_type find_last_not_of(_E _C, size_type _P = npos) const
|
||
|
|
{return (find_last_not_of((const _E *)&_C, _P, 1)); }
|
||
|
|
_Myt substr(size_type _P = 0, size_type _M = npos) const
|
||
|
|
{return (_Myt(*this, _P, _M)); }
|
||
|
|
int compare(const _Myt& _X) const
|
||
|
|
{return (compare(0, _Len, _X.c_str(), _X.size())); }
|
||
|
|
int compare(size_type _P0, size_type _N0,
|
||
|
|
const _Myt& _X) const
|
||
|
|
{return (compare(_P0, _N0, _X, 0, npos)); }
|
||
|
|
int compare(size_type _P0, size_type _N0, const _Myt& _X,
|
||
|
|
size_type _P, size_type _M) const
|
||
|
|
{if (_X.size() < _P)
|
||
|
|
_Xran();
|
||
|
|
if (_X._Len - _P < _M)
|
||
|
|
_M = _X._Len - _P;
|
||
|
|
return (compare(_P0, _N0, _X.c_str() + _P, _M)); }
|
||
|
|
int compare(const _E *_S) const
|
||
|
|
{return (compare(0, _Len, _S, _Tr::length(_S))); }
|
||
|
|
int compare(size_type _P0, size_type _N0, const _E *_S) const
|
||
|
|
{return (compare(_P0, _N0, _S, _Tr::length(_S))); }
|
||
|
|
int compare(size_type _P0, size_type _N0, const _E *_S,
|
||
|
|
size_type _M) const
|
||
|
|
{if (_Len < _P0)
|
||
|
|
_Xran();
|
||
|
|
if (_Len - _P0 < _N0)
|
||
|
|
_N0 = _Len - _P0;
|
||
|
|
size_type _Ans = _Tr::compare(_Psum(_Ptr, _P0), _S,
|
||
|
|
_N0 < _M ? _N0 : _M);
|
||
|
|
return (int)(_Ans != 0 ? _Ans : _N0 < _M ? -1
|
||
|
|
: _N0 == _M ? 0 : +1); }
|
||
|
|
_A get_allocator() const
|
||
|
|
{return (allocator); }
|
||
|
|
protected:
|
||
|
|
_A allocator;
|
||
|
|
private:
|
||
|
|
enum {_MIN_SIZE = sizeof (_E) <= 32 ? 31 : 7};
|
||
|
|
void _Copy(size_type _N)
|
||
|
|
{size_type _Ns = _N | _MIN_SIZE;
|
||
|
|
if (max_size() < _Ns)
|
||
|
|
_Ns = _N;
|
||
|
|
_E *_S;
|
||
|
|
_TRY_BEGIN
|
||
|
|
_S = allocator.allocate(_Ns + 2, (void *)0);
|
||
|
|
_CATCH_ALL
|
||
|
|
_Ns = _N;
|
||
|
|
_S = allocator.allocate(_Ns + 2, (void *)0);
|
||
|
|
_CATCH_END
|
||
|
|
if (0 < _Len)
|
||
|
|
_Tr::copy(_S + 1, _Ptr,_Len>_Ns?_Ns:_Len);
|
||
|
|
size_type _Olen = _Len;
|
||
|
|
_Tidy(true);
|
||
|
|
_Ptr = _S + 1;
|
||
|
|
_Refcnt(_Ptr) = 0;
|
||
|
|
_Res = _Ns;
|
||
|
|
_Eos(_Olen>_Ns?_Ns:_Olen); }
|
||
|
|
void _Eos(size_type _N)
|
||
|
|
{_Tr::assign(_Ptr[_Len = _N], _E(0)); }
|
||
|
|
void _Freeze()
|
||
|
|
{if (_Ptr != 0
|
||
|
|
&& _Refcnt(_Ptr) != 0 && _Refcnt(_Ptr) != _FROZEN)
|
||
|
|
_Grow(_Len);
|
||
|
|
if (_Ptr != 0)
|
||
|
|
_Refcnt(_Ptr) = _FROZEN; }
|
||
|
|
bool _Grow(size_type _N, bool _Trim = false)
|
||
|
|
{if (max_size() < _N)
|
||
|
|
_Xlen();
|
||
|
|
if (_Ptr != 0
|
||
|
|
&& _Refcnt(_Ptr) != 0 && _Refcnt(_Ptr) != _FROZEN)
|
||
|
|
if (_N == 0)
|
||
|
|
{--_Refcnt(_Ptr), _Tidy();
|
||
|
|
return (false); }
|
||
|
|
else
|
||
|
|
{_Copy(_N);
|
||
|
|
return (true); }
|
||
|
|
if (_N == 0)
|
||
|
|
{if (_Trim)
|
||
|
|
_Tidy(true);
|
||
|
|
else if (_Ptr != 0)
|
||
|
|
_Eos(0);
|
||
|
|
return (false); }
|
||
|
|
else
|
||
|
|
{if (_Trim && (_MIN_SIZE < _Res || _Res < _N))
|
||
|
|
{_Tidy(true);
|
||
|
|
_Copy(_N); }
|
||
|
|
else if (!_Trim && _Res < _N)
|
||
|
|
_Copy(_N);
|
||
|
|
return (true); }}
|
||
|
|
static const _E * __cdecl _Nullstr()
|
||
|
|
{static const _E _C = _E(0);
|
||
|
|
return (&_C); }
|
||
|
|
static size_type _Pdif(const_pointer _P2, const_pointer _P1)
|
||
|
|
{return (_P2 == 0 ? 0 : _P2 - _P1); }
|
||
|
|
static const_pointer _Psum(const_pointer _P, size_type _N)
|
||
|
|
{return (_P == 0 ? 0 : _P + _N); }
|
||
|
|
static pointer _Psum(pointer _P, size_type _N)
|
||
|
|
{return (_P == 0 ? 0 : _P + _N); }
|
||
|
|
unsigned char& _Refcnt(const _E *_U)
|
||
|
|
{return (((unsigned char *)_U)[-1]); }
|
||
|
|
void _Split()
|
||
|
|
{if (_Ptr != 0 && _Refcnt(_Ptr) != 0 && _Refcnt(_Ptr) != _FROZEN)
|
||
|
|
{_E *_Temp = _Ptr;
|
||
|
|
_Tidy(true);
|
||
|
|
assign(_Temp); }}
|
||
|
|
void _Tidy(bool _Built = false)
|
||
|
|
{if (!_Built || _Ptr == 0)
|
||
|
|
;
|
||
|
|
else if (_Refcnt(_Ptr) == 0 || _Refcnt(_Ptr) == _FROZEN)
|
||
|
|
allocator.deallocate(_Ptr - 1, _Res + 2);
|
||
|
|
else
|
||
|
|
--_Refcnt(_Ptr);
|
||
|
|
_Ptr = 0, _Len = 0, _Res = 0; }
|
||
|
|
_E *_Ptr;
|
||
|
|
size_type _Len, _Res;
|
||
|
|
};
|
||
|
|
template<class _E, class _Tr, class _A>
|
||
|
|
const typename basic_string<_E, _Tr, _A>::size_type
|
||
|
|
basic_string<_E, _Tr, _A>::npos = -1;
|
||
|
|
|
||
|
|
#ifdef _DLL
|
||
|
|
#ifdef __FORCE_INSTANCE
|
||
|
|
template class _CRTIMP2 basic_string<char, char_traits<char>, allocator<char> >;
|
||
|
|
template class _CRTIMP2 basic_string<wchar_t, char_traits<wchar_t>, allocator<wchar_t> >;
|
||
|
|
#else // __FORCE_INSTANCE
|
||
|
|
#pragma warning(disable:4231) /* the extern before template is a non-standard extension */
|
||
|
|
|
||
|
|
extern template class _CRTIMP2 basic_string<char, char_traits<char>, allocator<char> >;
|
||
|
|
extern template class _CRTIMP2 basic_string<wchar_t, char_traits<wchar_t>, allocator<wchar_t> >;
|
||
|
|
|
||
|
|
#pragma warning(default:4231) /* restore previous warning */
|
||
|
|
#endif // __FORCE_INSTANCE
|
||
|
|
#endif // _DLL
|
||
|
|
|
||
|
|
typedef basic_string<char, char_traits<char>, allocator<char> >
|
||
|
|
string;
|
||
|
|
|
||
|
|
typedef basic_string<wchar_t, char_traits<wchar_t>,
|
||
|
|
allocator<wchar_t> > wstring;
|
||
|
|
|
||
|
|
_STD_END
|
||
|
|
#ifdef _MSC_VER
|
||
|
|
#pragma pack(pop)
|
||
|
|
#endif /* _MSC_VER */
|
||
|
|
|
||
|
|
#endif /* _XSTRING */
|
||
|
|
|
||
|
|
/*
|
||
|
|
* Copyright (c) 1995 by P.J. Plauger. ALL RIGHTS RESERVED.
|
||
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* Consult your license regarding permissions and restrictions.
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*/
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