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1152 lines
35 KiB
1152 lines
35 KiB
// xlocnum internal header (from <locale>)
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#pragma once
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#ifndef _XLOCNUM_
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#define _XLOCNUM_
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#include <cerrno>
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#include <climits>
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#include <cstdio>
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#include <cstdlib>
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#include <streambuf>
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#pragma pack(push,8)
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#pragma warning(push,3)
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_STD_BEGIN
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// TEMPLATE CLASS numpunct
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template<class _Elem>
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class numpunct
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: public locale::facet
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{ // facet for defining numeric punctuation text
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public:
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typedef basic_string<_Elem, char_traits<_Elem>, allocator<_Elem> >
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string_type;
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typedef _Elem char_type;
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static locale::id id; // unique facet id
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_Elem decimal_point() const
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{ // return decimal point
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return (do_decimal_point());
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}
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_Elem thousands_sep() const
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{ // return thousands separator
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return (do_thousands_sep());
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}
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string grouping() const
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{ // return grouping string
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return (do_grouping());
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}
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string_type falsename() const
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{ // return name for false
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return (do_falsename());
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}
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string_type truename() const
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{ // return name for true
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return (do_truename());
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}
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explicit numpunct(size_t _Refs = 0)
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: locale::facet(_Refs)
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{ // construct from current locale
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_Init(_Locinfo());
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}
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numpunct(const _Locinfo& _Lobj, size_t _Refs = 0)
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: locale::facet(_Refs)
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{ // construct from specified locale
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_Init(_Lobj);
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}
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static size_t __cdecl _Getcat(const locale::facet **_Ppf = 0)
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{ // return locale category mask and construct standard facet
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if (_Ppf != 0 && *_Ppf == 0)
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*_Ppf = _NEW_CRT numpunct<_Elem>;
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return (_X_NUMERIC);
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}
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_PROTECTED:
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virtual ~numpunct()
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{ // destroy the object
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_Tidy();
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}
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protected:
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void _Init(const _Locinfo& _Lobj)
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{ // initialize from _Lobj
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const lconv *_Ptr = _Lobj._Getlconv();
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_Grouping = 0;
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_Falsename = 0;
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_Truename = 0;
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_TRY_BEGIN
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_Grouping = _MAKLOCSTR(char, _Ptr->grouping, _Lobj._Getcvt());
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_Falsename = _MAKLOCSTR(_Elem, _Lobj._Getfalse(), _Lobj._Getcvt());
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_Truename = _MAKLOCSTR(_Elem, _Lobj._Gettrue(), _Lobj._Getcvt());
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_CATCH_ALL
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_Tidy();
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_RERAISE;
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_CATCH_END
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_Dp = _WIDEN(_Elem, _Ptr->decimal_point[0]);
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_Kseparator = _WIDEN(_Elem, _Ptr->thousands_sep[0]);
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}
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virtual _Elem do_decimal_point() const
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{ // return decimal point
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return (_Dp);
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}
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virtual _Elem do_thousands_sep() const
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{ // return thousands separator
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return (_Kseparator);
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}
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virtual string do_grouping() const
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{ // return grouping string
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return (string(_Grouping));
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}
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virtual string_type do_falsename() const
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{ // return name for false
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return (string_type(_Falsename));
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}
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virtual string_type do_truename() const
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{ // return name for true
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return (string_type(_Truename));
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}
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private:
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void _Tidy()
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{ // free all storage
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_DELETE_CRT_VEC((void *)_Grouping);
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_DELETE_CRT_VEC((void *)_Falsename);
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_DELETE_CRT_VEC((void *)_Truename);
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}
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const char *_Grouping; // grouping string, "" for "C" locale
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_Elem _Dp; // decimal point, '.' for "C" locale
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_Elem _Kseparator; // thousands separator, '\0' for "C" locale
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const _Elem *_Falsename; // name for false, "false" for "C" locale
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const _Elem *_Truename; // name for true, "true" for "C" locale
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};
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typedef numpunct<char> _Npc;
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typedef numpunct<wchar_t> _Npwc;
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// TEMPLATE CLASS numpunct_byname
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template<class _Elem>
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class numpunct_byname
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: public numpunct<_Elem>
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{ // numpunct for named locale
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public:
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explicit numpunct_byname(const char *_Locname, size_t _Refs = 0)
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: numpunct<_Elem>(_Locinfo(_Locname), _Refs)
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{ // construct for named locale
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}
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_PROTECTED:
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virtual ~numpunct_byname()
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{ // destroy the object
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}
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};
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// STATIC numpunct::id OBJECT
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template<class _Elem>
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locale::id numpunct<_Elem>::id;
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#define _VIRTUAL virtual
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// TEMPLATE CLASS num_get
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template<class _Elem,
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class _InIt = istreambuf_iterator<_Elem, char_traits<_Elem> > >
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class num_get
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: public locale::facet
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{ // facet for converting text to encoded numbers
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public:
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typedef numpunct<_Elem> _Mypunct;
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typedef basic_string<_Elem, char_traits<_Elem>, allocator<_Elem> >
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_Mystr;
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static size_t __cdecl _Getcat(const locale::facet **_Ppf = 0)
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{ // return locale category mask and construct standard facet
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if (_Ppf != 0 && *_Ppf == 0)
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*_Ppf = _NEW_CRT num_get<_Elem, _InIt>;
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return (_X_NUMERIC);
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}
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static locale::id id; // unique facet id
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_PROTECTED:
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virtual ~num_get()
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{ // destroy the object
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}
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protected:
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void _Init(const _Locinfo&)
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{ // initialize from _Locinfo object (do nothing)
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}
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public:
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explicit num_get(size_t _Refs = 0)
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: locale::facet(_Refs)
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{ // construct from current locale
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_Init(_Locinfo());
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}
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num_get(const _Locinfo& _Lobj, size_t _Refs = 0)
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: locale::facet(_Refs)
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{ // construct from specified locale
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_Init(_Lobj);
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}
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typedef _Elem char_type;
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typedef _InIt iter_type;
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_InIt get(_InIt _First, _InIt _Last, ios_base& _Iosbase,
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ios_base::iostate& _State, _Bool& _Val) const
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{ // get bool from [_First, _Last) into _Val
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return (do_get(_First, _Last, _Iosbase, _State, _Val));
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}
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_InIt get(_InIt _First, _InIt _Last, ios_base& _Iosbase,
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ios_base::iostate& _State, unsigned short& _Val) const
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{ // get unsigned short from [_First, _Last) into _Val
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return (do_get(_First, _Last, _Iosbase, _State, _Val));
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}
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_InIt get(_InIt _First, _InIt _Last, ios_base& _Iosbase,
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ios_base::iostate& _State, unsigned int& _Val) const
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{ // get unsigned int from [_First, _Last) into _Val
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return (do_get(_First, _Last, _Iosbase, _State, _Val));
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}
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_InIt get(_InIt _First, _InIt _Last, ios_base& _Iosbase,
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ios_base::iostate& _State, long& _Val) const
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{ // get long from [_First, _Last) into _Val
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return (do_get(_First, _Last, _Iosbase, _State, _Val));
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}
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_InIt get(_InIt _First, _InIt _Last, ios_base& _Iosbase,
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ios_base::iostate& _State, unsigned long& _Val) const
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{ // get unsigned long from [_First, _Last) into _Val
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return (do_get(_First, _Last, _Iosbase, _State, _Val));
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}
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#ifdef _LONGLONG
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_InIt get(_InIt _First, _InIt _Last, ios_base& _Iosbase,
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ios_base::iostate& _State, _LONGLONG& _Val) const
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{ // get long long from [_First, _Last) into _Val
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return (do_get(_First, _Last, _Iosbase, _State, _Val));
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}
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_InIt get(_InIt _First, _InIt _Last, ios_base& _Iosbase,
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ios_base::iostate& _State, _ULONGLONG& _Val) const
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{ // get unsigned long long from [_First, _Last) into _Val
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return (do_get(_First, _Last, _Iosbase, _State, _Val));
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}
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#endif /* _LONGLONG */
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_InIt get(_InIt _First, _InIt _Last, ios_base& _Iosbase,
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ios_base::iostate& _State, float& _Val) const
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{ // get float from [_First, _Last) into _Val
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return (do_get(_First, _Last, _Iosbase, _State, _Val));
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}
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_InIt get(_InIt _First, _InIt _Last, ios_base& _Iosbase,
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ios_base::iostate& _State, double& _Val) const
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{ // get double from [_First, _Last) into _Val
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return (do_get(_First, _Last, _Iosbase, _State, _Val));
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}
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_InIt get(_InIt _First, _InIt _Last, ios_base& _Iosbase,
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ios_base::iostate& _State, long double& _Val) const
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{ // get long double from [_First, _Last) into _Val
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return (do_get(_First, _Last, _Iosbase, _State, _Val));
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}
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_InIt get(_InIt _First, _InIt _Last, ios_base& _Iosbase,
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ios_base::iostate& _State, void *& _Val) const
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{ // get void pointer from [_First, _Last) into _Val
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return (do_get(_First, _Last, _Iosbase, _State, _Val));
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}
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protected:
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_VIRTUAL _InIt do_get(_InIt _First, _InIt _Last, ios_base& _Iosbase,
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ios_base::iostate& _State, _Bool& _Val) const
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{ // get bool from [_First, _Last) into _Val
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int _Ans = -1; // negative answer indicates failure
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if (_Iosbase.flags() & ios_base::boolalpha)
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{ // get false name or true name
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const _Mypunct& _Fac = _USE(_Iosbase.getloc(), _Mypunct);
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_Mystr _Str((typename _Mystr::size_type)1, (char_type)0);
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_Str += _Fac.falsename();
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_Str += (char_type)0;
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_Str += _Fac.truename(); // construct "\0false\0true"
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_Ans = _Getloctxt(_First, _Last, (size_t)2, _Str.c_str());
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}
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else
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{ // get zero or nonzero integer
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char _Ac[_MAX_INT_DIG], *_Ep;
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errno = 0;
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const unsigned long _Ulo = ::strtoul(_Ac, &_Ep,
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_Getifld(_Ac, _First, _Last, _Iosbase.flags(),
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_Iosbase.getloc()));
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if (_Ep != _Ac && errno == 0 && _Ulo <= 1)
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_Ans = _Ulo;
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}
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if (_First == _Last)
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_State |= ios_base::eofbit;
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if (_Ans < 0)
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_State |= ios_base::failbit;
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else
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_Val = _Ans != 0; // deliver value
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return (_First);
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}
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_VIRTUAL _InIt do_get(_InIt _First, _InIt _Last, ios_base& _Iosbase,
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ios_base::iostate& _State, unsigned short& _Val) const
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{ // get unsigned short from [_First, _Last) into _Val
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char _Ac[_MAX_INT_DIG], *_Ep;
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errno = 0;
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int _Base = _Getifld(_Ac, _First, _Last, _Iosbase.flags(),
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_Iosbase.getloc()); // gather field into _Ac
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char *_Ptr = _Ac[0] == '-' ? _Ac + 1 : _Ac; // point past any sign
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const unsigned long _Ans =
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::strtoul(_Ptr, &_Ep, _Base); // convert
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if (_First == _Last)
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_State |= ios_base::eofbit;
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if (_Ep == _Ptr || errno != 0 || USHRT_MAX < _Ans)
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_State |= ios_base::failbit;
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else
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_Val = (unsigned short)(_Ac[0] == '-'
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? 0 -_Ans : _Ans); // deliver value
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return (_First);
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}
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_VIRTUAL _InIt do_get(_InIt _First, _InIt _Last, ios_base& _Iosbase,
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ios_base::iostate& _State, unsigned int& _Val) const
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{ // get unsigned int from [_First, _Last) into _Val
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char _Ac[_MAX_INT_DIG], *_Ep;
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errno = 0;
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int _Base = _Getifld(_Ac, _First, _Last, _Iosbase.flags(),
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_Iosbase.getloc()); // gather field into _Ac
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char *_Ptr = _Ac[0] == '-' ? _Ac + 1 : _Ac; // point past any sign
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const unsigned long _Ans =
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::strtoul(_Ptr, &_Ep, _Base); // convert
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if (_First == _Last)
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_State |= ios_base::eofbit;
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if (_Ep == _Ptr || errno != 0 || UINT_MAX < _Ans)
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_State |= ios_base::failbit;
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else
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_Val = _Ac[0] == '-' ? 0 -_Ans : _Ans; // deliver value
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return (_First);
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}
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_VIRTUAL _InIt do_get(_InIt _First, _InIt _Last, ios_base& _Iosbase,
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ios_base::iostate& _State, long& _Val) const
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{ // get long from [_First, _Last) into _Val
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char _Ac[_MAX_INT_DIG], *_Ep;
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errno = 0;
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const long _Ans = ::strtol(_Ac, &_Ep,
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_Getifld(_Ac, _First, _Last, _Iosbase.flags(),
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_Iosbase.getloc())); // gather field, convert
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if (_First == _Last)
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_State |= ios_base::eofbit;
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if (_Ep == _Ac || errno != 0)
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_State |= ios_base::failbit;
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else
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_Val = _Ans; // deliver value
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return (_First);
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}
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_VIRTUAL _InIt do_get(_InIt _First, _InIt _Last, ios_base& _Iosbase,
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ios_base::iostate& _State, unsigned long& _Val) const
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{ // get unsigned long from [_First, _Last) into _Val
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char _Ac[_MAX_INT_DIG], *_Ep;
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errno = 0;
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const unsigned long _Ans = ::strtoul(_Ac, &_Ep,
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_Getifld(_Ac, _First, _Last, _Iosbase.flags(),
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_Iosbase.getloc())); // gather field, convert
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if (_First == _Last)
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_State |= ios_base::eofbit;
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if (_Ep == _Ac || errno != 0)
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_State |= ios_base::failbit;
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else
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_Val = _Ans; // deliver value
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return (_First);
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}
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#ifdef _LONGLONG
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_VIRTUAL _InIt do_get(_InIt _First, _InIt _Last, ios_base& _Iosbase,
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ios_base::iostate& _State, _LONGLONG& _Val) const
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{ // get long long from [_First, _Last) into _Val
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char _Ac[_MAX_INT_DIG], *_Ep;
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errno = 0;
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const _LONGLONG _Ans = ::_strtoi64(_Ac, &_Ep,
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_Getifld(_Ac, _First, _Last, _Iosbase.flags(),
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_Iosbase.getloc())); // gather field, convert
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if (_First == _Last)
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_State |= ios_base::eofbit;
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if (_Ep == _Ac || errno != 0)
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_State |= ios_base::failbit;
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else
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_Val = _Ans; // deliver value
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return (_First);
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}
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_VIRTUAL _InIt do_get(_InIt _First, _InIt _Last, ios_base& _Iosbase,
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ios_base::iostate& _State, _ULONGLONG& _Val) const
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{ // get unsigned long long from [_First, _Last) into _Val
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char _Ac[_MAX_INT_DIG], *_Ep;
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errno = 0;
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const _ULONGLONG _Ans = ::_strtoui64(_Ac, &_Ep,
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_Getifld(_Ac, _First, _Last, _Iosbase.flags(),
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_Iosbase.getloc())); // gather field, convert
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if (_First == _Last)
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_State |= ios_base::eofbit;
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if (_Ep == _Ac || errno != 0)
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_State |= ios_base::failbit;
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else
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_Val = _Ans; // deliver value
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return (_First);
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}
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#endif /* _LONGLONG */
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_VIRTUAL _InIt do_get(_InIt _First, _InIt _Last, ios_base& _Iosbase,
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ios_base::iostate& _State, float& _Val) const
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{ // get float from [_First, _Last) into _Val
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char _Ac[_MAX_EXP_DIG + _MAX_SIG_DIG + 16], *_Ep;
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errno = 0;
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const float _Ans = ::_Stof(_Ac, &_Ep,
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_Getffld(_Ac, _First, _Last,
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_Iosbase.getloc())); // gather field, convert
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if (_First == _Last)
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_State |= ios_base::eofbit;
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if (_Ep == _Ac || errno != 0)
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_State |= ios_base::failbit;
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else
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_Val = _Ans; // deliver value
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return (_First);
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}
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_VIRTUAL _InIt do_get(_InIt _First, _InIt _Last, ios_base& _Iosbase,
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ios_base::iostate& _State, double& _Val) const
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{ // get double from [_First, _Last) into _Val
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char _Ac[_MAX_EXP_DIG + _MAX_SIG_DIG + 16], *_Ep;
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errno = 0;
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const double _Ans = ::_Stod(_Ac, &_Ep,
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_Getffld(_Ac, _First, _Last,
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_Iosbase.getloc())); // gather field, convert
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if (_First == _Last)
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_State |= ios_base::eofbit;
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if (_Ep == _Ac || errno != 0)
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_State |= ios_base::failbit;
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else
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_Val = _Ans; // deliver value
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return (_First);
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}
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_VIRTUAL _InIt do_get(_InIt _First, _InIt _Last, ios_base& _Iosbase,
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ios_base::iostate& _State, long double& _Val) const
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{ // get long double from [_First, _Last) into _Val
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char _Ac[_MAX_EXP_DIG + _MAX_SIG_DIG + 16], *_Ep;
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errno = 0;
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const long double _Ans = ::_Stold(_Ac, &_Ep,
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_Getffld(_Ac, _First, _Last,
|
|
_Iosbase.getloc())); // gather field, convert
|
|
|
|
if (_First == _Last)
|
|
_State |= ios_base::eofbit;
|
|
if (_Ep == _Ac || errno != 0)
|
|
_State |= ios_base::failbit;
|
|
else
|
|
_Val = _Ans; // deliver value
|
|
return (_First);
|
|
}
|
|
|
|
_VIRTUAL _InIt do_get(_InIt _First, _InIt _Last, ios_base& _Iosbase,
|
|
ios_base::iostate& _State, void *& _Val) const
|
|
{ // get void pointer from [_First, _Last) into _Val
|
|
char _Ac[_MAX_INT_DIG], *_Ep;
|
|
errno = 0;
|
|
|
|
#ifdef _LONGLONG
|
|
int _Base = _Getifld(_Ac, _First, _Last, ios_base::hex,
|
|
_Iosbase.getloc()); // gather field
|
|
const _ULONGLONG _Ans =
|
|
(sizeof (void *) == sizeof (unsigned long))
|
|
? (_ULONGLONG)::strtoul(_Ac, &_Ep, _Base)
|
|
: ::_strtoui64(_Ac, &_Ep, _Base);
|
|
|
|
#else /* _LONGLONG */
|
|
const unsigned long _Ans = ::strtoul(_Ac, &_Ep,
|
|
_Getifld(_Ac, _First, _Last, ios_base::hex,
|
|
_Iosbase.getloc())); // gather field, convert
|
|
#endif /* _LONGLONG */
|
|
|
|
if (_First == _Last)
|
|
_State |= ios_base::eofbit;
|
|
if (_Ep == _Ac || errno != 0)
|
|
_State |= ios_base::failbit;
|
|
else
|
|
_Val = (void *)((char *)0 + _Ans); // deliver value
|
|
return (_First);
|
|
}
|
|
|
|
private:
|
|
static int __cdecl _Getifld(char *_Ac, _InIt& _First, _InIt& _Last,
|
|
ios_base::fmtflags _Basefield, const locale& _Loc)
|
|
{ // get integer field from [_First, _Last) into _Ac
|
|
const _Elem _E0 = _WIDEN(_Elem, '0');
|
|
const _Mypunct& _Fac = _USE(_Loc, _Mypunct);
|
|
const string _Grouping = _Fac.grouping();
|
|
const _Elem _Kseparator = _Fac.thousands_sep();
|
|
char *_Ptr = _Ac;
|
|
|
|
if (_First == _Last)
|
|
; // empty field
|
|
else if (*_First == _WIDEN(_Elem, '+'))
|
|
*_Ptr++ = '+', ++_First; // gather plus sign
|
|
else if (*_First == _WIDEN(_Elem, '-'))
|
|
*_Ptr++ = '-', ++_First; // gather minus sign
|
|
|
|
_Basefield &= ios_base::basefield;
|
|
int _Base = _Basefield == ios_base::oct ? 8
|
|
: _Basefield == ios_base::hex ? 16
|
|
: _Basefield == ios_base::_Fmtzero ? 0 : 10;
|
|
|
|
bool _Seendigit = false; // seen a digit in input
|
|
bool _Nonzero = false; // seen a nonzero digit in input
|
|
|
|
if (_First != _Last && *_First == _E0)
|
|
{ // leading zero, look for 0x, 0X
|
|
_Seendigit = true, ++_First;
|
|
if (_First != _Last && (*_First == _WIDEN(_Elem, 'x')
|
|
|| *_First == _WIDEN(_Elem, 'X'))
|
|
&& (_Base == 0 || _Base == 16))
|
|
_Base = 16, _Seendigit = false, ++_First;
|
|
else if (_Base == 0)
|
|
_Base = 8;
|
|
}
|
|
|
|
int _Dlen = _Base == 0 || _Base == 10 ? 10
|
|
: _Base == 8 ? 8 : 16 + 6;
|
|
string _Groups((size_t)1, (char)_Seendigit);
|
|
size_t _Group = 0;
|
|
|
|
for (char *const _Pe = &_Ac[_MAX_INT_DIG - 1];
|
|
_First != _Last; ++_First)
|
|
if (::memchr("0123456789abcdefABCDEF",
|
|
*_Ptr = _NARROW(_Elem, *_First), _Dlen) != 0)
|
|
{ // got a digit, characterize it and add to group size
|
|
if ((_Nonzero || *_Ptr != '0') && _Ptr < _Pe)
|
|
++_Ptr, _Nonzero = true;
|
|
_Seendigit = true;
|
|
if (_Groups[_Group] != CHAR_MAX)
|
|
++_Groups[_Group];
|
|
}
|
|
else if (_Groups[_Group] == '\0'
|
|
|| _Kseparator == (_Elem)0
|
|
|| *_First != _Kseparator)
|
|
break; // not a group separator, done
|
|
else
|
|
{ // add a new group to _Groups string
|
|
_Groups.append((string::size_type)1, '\0');
|
|
++_Group;
|
|
}
|
|
|
|
if (_Group == 0)
|
|
; // no thousands separators seen
|
|
else if ('\0' < _Groups[_Group])
|
|
++_Group; // add trailing group to group count
|
|
else
|
|
_Seendigit = false; // trailing separator, fail
|
|
|
|
for (const char *_Pg = _Grouping.c_str(); _Seendigit && 0 < _Group; )
|
|
if (*_Pg == CHAR_MAX)
|
|
break; // end of grouping constraints to check
|
|
else if (0 < --_Group && *_Pg != _Groups[_Group]
|
|
|| 0 == _Group && *_Pg < _Groups[_Group])
|
|
_Seendigit = false; // bad group size, fail
|
|
else if ('\0' < _Pg[1])
|
|
++_Pg; // group size okay, advance to next test
|
|
|
|
if (_Seendigit && !_Nonzero)
|
|
*_Ptr++ = '0'; // zero field, replace stripped zero(s)
|
|
else if (!_Seendigit)
|
|
_Ptr = _Ac; // roll back pointer to indicate failure
|
|
*_Ptr = '\0';
|
|
return (_Base);
|
|
}
|
|
|
|
static int __cdecl _Getffld(char *_Ac, _InIt& _First, _InIt &_Last,
|
|
const locale& _Loc)
|
|
{ // get floating-point field from [_First, _Last) into _Ac
|
|
const _Elem _E0 = _WIDEN(_Elem, '0');
|
|
const _Mypunct& _Fac = _USE(_Loc, _Mypunct);
|
|
char *_Ptr = _Ac;
|
|
|
|
if (_First == _Last)
|
|
; // empty field
|
|
else if (*_First == _WIDEN(_Elem, '+'))
|
|
*_Ptr++ = '+', ++_First; // gather plus sign
|
|
else if (*_First == _WIDEN(_Elem, '-'))
|
|
*_Ptr++ = '-', ++_First; // gather minus sign
|
|
|
|
bool _Seendigit = false; // seen a digit in input
|
|
for (; _First != _Last && *_First == _E0; _Seendigit = true, ++_First)
|
|
; // strip leading zeros
|
|
if (_Seendigit)
|
|
*_Ptr++ = '0'; // put one back
|
|
|
|
int _Significant = 0; // number of significant digits
|
|
int _Pten = 0; // power of 10 multiplier
|
|
|
|
for (; _First != _Last
|
|
&& (::isdigit)(*_Ptr = _NARROW(_Elem, *_First));
|
|
_Seendigit = true, ++_First)
|
|
if (_Significant < _MAX_SIG_DIG)
|
|
++_Ptr, ++_Significant; // save a significant digit
|
|
else
|
|
++_Pten; // or just scale by 10
|
|
|
|
if (_First != _Last && *_First == _Fac.decimal_point())
|
|
*_Ptr++ = localeconv()->decimal_point[0], ++_First; // add .
|
|
|
|
if (_Significant == 0)
|
|
{ // 0000. so far
|
|
for (; _First != _Last && *_First == _E0;
|
|
_Seendigit = true, ++_First)
|
|
--_Pten; // just count leading fraction zeros
|
|
if (_Pten < 0)
|
|
*_Ptr++ = '0', ++_Pten; // put one back
|
|
}
|
|
|
|
for (; _First != _Last
|
|
&& (::isdigit)(*_Ptr = _NARROW(_Elem, *_First));
|
|
_Seendigit = true, ++_First)
|
|
if (_Significant < _MAX_SIG_DIG)
|
|
++_Ptr, ++_Significant; // save a significant fraction digit
|
|
|
|
if (_Seendigit && _First != _Last
|
|
&& (*_First == _WIDEN(_Elem, 'e')
|
|
|| *_First == _WIDEN(_Elem, 'E')))
|
|
{ // 'e' or 'E', collect exponent
|
|
*_Ptr++ = 'e', ++_First;
|
|
_Seendigit = false, _Significant = 0;
|
|
|
|
if (_First == _Last)
|
|
; // 'e' or 'E' is last element
|
|
else if (*_First == _WIDEN(_Elem, '+'))
|
|
*_Ptr++ = '+', ++_First; // gather plus sign
|
|
else if (*_First == _WIDEN(_Elem, '-'))
|
|
*_Ptr++ = '-', ++_First; // gather minus sign
|
|
for (; _First != _Last && *_First == _E0; )
|
|
_Seendigit = true, ++_First; // strip leading zeros
|
|
if (_Seendigit)
|
|
*_Ptr++ = '0'; // put one back
|
|
for (; _First != _Last
|
|
&& (::isdigit)(*_Ptr = _NARROW(_Elem, *_First));
|
|
_Seendigit = true, ++_First)
|
|
if (_Significant < _MAX_EXP_DIG)
|
|
++_Ptr, ++_Significant; // save a significant digit
|
|
}
|
|
|
|
if (!_Seendigit)
|
|
_Ptr = _Ac; // roll back pointer to indicate failure
|
|
*_Ptr = '\0';
|
|
return (_Pten);
|
|
};
|
|
};
|
|
|
|
// STATIC num_get::id OBJECT
|
|
template<class _Elem,
|
|
class _InIt>
|
|
locale::id num_get<_Elem, _InIt>::id;
|
|
|
|
// TEMPLATE CLASS num_put
|
|
template<class _Elem,
|
|
class _OutIt = ostreambuf_iterator<_Elem, char_traits<_Elem> > >
|
|
class num_put
|
|
: public locale::facet
|
|
{ // facet for converting encoded numbers to text
|
|
public:
|
|
typedef numpunct<_Elem> _Mypunct;
|
|
typedef basic_string<_Elem, char_traits<_Elem>, allocator<_Elem> >
|
|
_Mystr;
|
|
|
|
static size_t __cdecl _Getcat(const locale::facet **_Ppf = 0)
|
|
{ // return locale category mask and construct standard facet
|
|
if (_Ppf != 0 && *_Ppf == 0)
|
|
*_Ppf = _NEW_CRT num_put<_Elem, _OutIt>;
|
|
return (_X_NUMERIC);
|
|
}
|
|
|
|
static locale::id id; // unique facet id
|
|
|
|
_PROTECTED:
|
|
virtual ~num_put()
|
|
{ // destroy the object
|
|
}
|
|
|
|
protected:
|
|
void _Init(const _Locinfo&)
|
|
{ // initialize from _Locinfo object (do nothing)
|
|
}
|
|
|
|
public:
|
|
explicit num_put(size_t _Refs = 0)
|
|
: locale::facet(_Refs)
|
|
{ // construct from current locale
|
|
_Init(_Locinfo());
|
|
}
|
|
|
|
num_put(const _Locinfo& _Lobj, size_t _Refs = 0)
|
|
: locale::facet(_Refs)
|
|
{ // construct from specified locale
|
|
_Init(_Lobj);
|
|
}
|
|
|
|
typedef _Elem char_type;
|
|
typedef _OutIt iter_type;
|
|
|
|
_OutIt put(_OutIt _Dest, ios_base& _Iosbase, _Elem _Fill,
|
|
_Bool _Val) const
|
|
{ // put formatted bool to _Dest
|
|
return (do_put(_Dest, _Iosbase, _Fill, _Val));
|
|
}
|
|
|
|
_OutIt put(_OutIt _Dest, ios_base& _Iosbase, _Elem _Fill,
|
|
long _Val) const
|
|
{ // put formatted long to _Dest
|
|
return (do_put(_Dest, _Iosbase, _Fill, _Val));
|
|
}
|
|
|
|
_OutIt put(_OutIt _Dest, ios_base& _Iosbase, _Elem _Fill,
|
|
unsigned long _Val) const
|
|
{ // put formatted unsigned long to _Dest
|
|
return (do_put(_Dest, _Iosbase, _Fill, _Val));
|
|
}
|
|
#ifdef _LONGLONG
|
|
|
|
_OutIt put(_OutIt _Dest, ios_base& _Iosbase, _Elem _Fill,
|
|
_LONGLONG _Val) const
|
|
{ // put formatted long long to _Dest
|
|
return (do_put(_Dest, _Iosbase, _Fill, _Val));
|
|
}
|
|
|
|
_OutIt put(_OutIt _Dest, ios_base& _Iosbase, _Elem _Fill,
|
|
_ULONGLONG _Val) const
|
|
{ // put formatted unsigned long long to _Dest
|
|
return (do_put(_Dest, _Iosbase, _Fill, _Val));
|
|
}
|
|
#endif /* _LONGLONG */
|
|
|
|
_OutIt put(_OutIt _Dest, ios_base& _Iosbase, _Elem _Fill,
|
|
double _Val) const
|
|
{ // put formatted double to _Dest
|
|
return (do_put(_Dest, _Iosbase, _Fill, _Val));
|
|
}
|
|
|
|
_OutIt put(_OutIt _Dest, ios_base& _Iosbase, _Elem _Fill,
|
|
long double _Val) const
|
|
{ // put formatted long double to _Dest
|
|
return (do_put(_Dest, _Iosbase, _Fill, _Val));
|
|
}
|
|
|
|
_OutIt put(_OutIt _Dest, ios_base& _Iosbase, _Elem _Fill,
|
|
const void *_Val) const
|
|
{ // put formatted void pointer to _Dest
|
|
return (do_put(_Dest, _Iosbase, _Fill, _Val));
|
|
}
|
|
|
|
protected:
|
|
virtual _OutIt do_put(_OutIt _Dest, ios_base& _Iosbase, _Elem _Fill,
|
|
_Bool _Val) const
|
|
{ // put formatted bool to _Dest
|
|
if (!(_Iosbase.flags() & ios_base::boolalpha))
|
|
return (do_put(_Dest, _Iosbase, _Fill, (long)_Val));
|
|
else
|
|
{ // put "false" or "true"
|
|
const _Mypunct& _Fac = _USE(_Iosbase.getloc(), _Mypunct);
|
|
const _Mystr _Str(_Val ? _Fac.truename() : _Fac.falsename());
|
|
|
|
size_t _Fillcount = _Iosbase.width() <= 0
|
|
|| (size_t)_Iosbase.width() <= _Str.size()
|
|
? 0 : (size_t)_Iosbase.width() - _Str.size();
|
|
|
|
if ((_Iosbase.flags() & ios_base::adjustfield) != ios_base::left)
|
|
{ // put leading fill
|
|
_Dest = _Rep(_Dest, _Fill, _Fillcount);
|
|
_Fillcount = 0;
|
|
}
|
|
_Dest = _Put(_Dest, _Str.c_str(), _Str.size()); // put field
|
|
_Iosbase.width(0);
|
|
return (_Rep(_Dest, _Fill, _Fillcount)); // put trailing fill
|
|
}
|
|
}
|
|
|
|
virtual _OutIt do_put(_OutIt _Dest, ios_base& _Iosbase, _Elem _Fill,
|
|
long _Val) const
|
|
{ // put formatted long to _Dest
|
|
char _Buf[2 * _MAX_INT_DIG], _Fmt[6];
|
|
return (_Iput(_Dest, _Iosbase, _Fill, _Buf,
|
|
::sprintf(_Buf, _Ifmt(_Fmt, "ld",
|
|
_Iosbase.flags()), _Val)));
|
|
}
|
|
|
|
virtual _OutIt do_put(_OutIt _Dest, ios_base& _Iosbase, _Elem _Fill,
|
|
unsigned long _Val) const
|
|
{ // put formatted unsigned long to _Dest
|
|
char _Buf[2 * _MAX_INT_DIG], _Fmt[6];
|
|
return (_Iput(_Dest, _Iosbase, _Fill, _Buf,
|
|
::sprintf(_Buf, _Ifmt(_Fmt, "lu",
|
|
_Iosbase.flags()), _Val)));
|
|
}
|
|
#ifdef _LONGLONG
|
|
|
|
virtual _OutIt do_put(_OutIt _Dest, ios_base& _Iosbase, _Elem _Fill,
|
|
_LONGLONG _Val) const
|
|
{ // put formatted long long to _Dest
|
|
char _Buf[2 * _MAX_INT_DIG], _Fmt[8];
|
|
return (_Iput(_Dest, _Iosbase, _Fill, _Buf,
|
|
::sprintf(_Buf, _Ifmt(_Fmt, "Ld",
|
|
_Iosbase.flags()), _Val)));
|
|
}
|
|
|
|
virtual _OutIt do_put(_OutIt _Dest, ios_base& _Iosbase, _Elem _Fill,
|
|
_ULONGLONG _Val) const
|
|
{ // put formatted unsigned long long to _Dest
|
|
char _Buf[2 * _MAX_INT_DIG], _Fmt[8];
|
|
return (_Iput(_Dest, _Iosbase, _Fill, _Buf,
|
|
::sprintf(_Buf, _Ifmt(_Fmt, "Lu",
|
|
_Iosbase.flags()), _Val)));
|
|
}
|
|
#endif /* _LONGLONG */
|
|
|
|
virtual _OutIt do_put(_OutIt _Dest, ios_base& _Iosbase, _Elem _Fill,
|
|
double _Val) const
|
|
{ // put formatted double to _Dest
|
|
char _Buf[_MAX_EXP_DIG + _MAX_SIG_DIG + 64], _Fmt[8];
|
|
streamsize _Precision = _Iosbase.precision() <= 0
|
|
&& !(_Iosbase.flags() & ios_base::fixed)
|
|
? 6 : _Iosbase.precision(); // desired precision
|
|
int _Significance = _MAX_SIG_DIG < _Precision
|
|
? _MAX_SIG_DIG : (int)_Precision; // actual precision for sprintf
|
|
_Precision -= _Significance;
|
|
size_t _Beforepoint = 0; // zeros to add before decimal point
|
|
size_t _Afterpoint = 0; // zeros to add after decimal point
|
|
|
|
if ((_Iosbase.flags() & ios_base::floatfield) == ios_base::fixed)
|
|
{ // scale silly fixed-point value
|
|
bool _Signed = _Val < 0;
|
|
if (_Signed)
|
|
_Val = -_Val;
|
|
|
|
for (; 1e35 <= _Val && _Beforepoint < 5000; _Beforepoint += 10)
|
|
_Val /= 1e10; // drop 10 zeros before decimal point
|
|
|
|
if (0 < _Val)
|
|
for (; 10 <= _Precision && _Val <= 1e-35
|
|
&& _Afterpoint < 5000; _Afterpoint += 10)
|
|
{ // drop 10 zeros after decimal point
|
|
_Val *= 1e10;
|
|
_Precision -= 10;
|
|
}
|
|
|
|
if (_Signed)
|
|
_Val = -_Val;
|
|
}
|
|
|
|
return (_Fput(_Dest, _Iosbase, _Fill, _Buf,
|
|
_Beforepoint, _Afterpoint, _Precision,
|
|
::sprintf(_Buf, _Ffmt(_Fmt, 0, _Iosbase.flags()),
|
|
_Significance, _Val))); // convert and put
|
|
}
|
|
|
|
virtual _OutIt do_put(_OutIt _Dest, ios_base& _Iosbase, _Elem _Fill,
|
|
long double _Val) const
|
|
{ // put formatted long double to _Dest
|
|
char _Buf[_MAX_EXP_DIG + _MAX_SIG_DIG + 64], _Fmt[8];
|
|
streamsize _Precision = _Iosbase.precision() <= 0
|
|
&& !(_Iosbase.flags() & ios_base::fixed)
|
|
? 6 : _Iosbase.precision(); // desired precision
|
|
int _Significance = _MAX_SIG_DIG < _Precision
|
|
? _MAX_SIG_DIG : (int)_Precision; // actual precision for sprintf
|
|
_Precision -= _Significance;
|
|
size_t _Beforepoint = 0; // zeros to add before decimal point
|
|
size_t _Afterpoint = 0; // zeros to add after decimal point
|
|
|
|
if ((_Iosbase.flags() & ios_base::floatfield) == ios_base::fixed)
|
|
{ // scale silly fixed-point value
|
|
bool _Signed = _Val < 0;
|
|
if (_Signed)
|
|
_Val = -_Val;
|
|
|
|
for (; 1e35 <= _Val && _Beforepoint < 5000; _Beforepoint += 10)
|
|
_Val /= 1e10; // drop 10 zeros before decimal point
|
|
|
|
if (0 < _Val)
|
|
for (; 10 <= _Precision && _Val <= 1e-35
|
|
&& _Afterpoint < 5000; _Afterpoint += 10)
|
|
{ // drop 10 zeros after decimal point
|
|
_Val *= 1e10;
|
|
_Precision -= 10;
|
|
}
|
|
|
|
if (_Signed)
|
|
_Val = -_Val;
|
|
}
|
|
|
|
return (_Fput(_Dest, _Iosbase, _Fill, _Buf,
|
|
_Beforepoint, _Afterpoint, _Precision,
|
|
::sprintf(_Buf, _Ffmt(_Fmt, 'L', _Iosbase.flags()),
|
|
_Significance, _Val))); // convert and put
|
|
}
|
|
|
|
virtual _OutIt do_put(_OutIt _Dest, ios_base& _Iosbase, _Elem _Fill,
|
|
const void *_Val) const
|
|
{ // put formatted void pointer to _Dest
|
|
char _Buf[2 * _MAX_INT_DIG];
|
|
return (_Iput(_Dest, _Iosbase, _Fill, _Buf,
|
|
::sprintf(_Buf, "%p", _Val)));
|
|
}
|
|
|
|
static char *__cdecl _Ffmt(char *_Fmt, char _Spec,
|
|
ios_base::fmtflags _Flags)
|
|
{ // generate sprintf format for floating-point
|
|
char *_Ptr = _Fmt;
|
|
*_Ptr++ = '%';
|
|
|
|
if (_Flags & ios_base::showpos)
|
|
*_Ptr++ = '+';
|
|
if (_Flags & ios_base::showpoint)
|
|
*_Ptr++ = '#';
|
|
*_Ptr++ = '.';
|
|
*_Ptr++ = '*'; // for precision argument
|
|
if (_Spec != '\0')
|
|
*_Ptr++ = _Spec; // 'L' qualifier for long double only
|
|
|
|
ios_base::fmtflags _Ffl = _Flags & ios_base::floatfield;
|
|
*_Ptr++ = _Ffl == ios_base::fixed ? 'f'
|
|
: _Ffl == ios_base::scientific ? 'e' : 'g'; // specifier
|
|
*_Ptr = '\0';
|
|
return (_Fmt);
|
|
}
|
|
|
|
static _OutIt __cdecl _Fput(_OutIt _Dest, ios_base& _Iosbase,
|
|
_Elem _Fill, const char *_Buf,
|
|
size_t _Beforepoint, size_t _Afterpoint,
|
|
size_t _Trailing, size_t _Count)
|
|
{ // put formatted floating-point to _Dest
|
|
_Elem _E0 = _WIDEN(_Elem, '0');
|
|
size_t _Fillcount = _Beforepoint + _Afterpoint + _Trailing + _Count;
|
|
_Fillcount = _Iosbase.width() <= 0
|
|
|| (size_t)_Iosbase.width() <= _Fillcount
|
|
? 0 : (size_t)_Iosbase.width() - _Fillcount;
|
|
|
|
ios_base::fmtflags _Adjustfield =
|
|
_Iosbase.flags() & ios_base::adjustfield;
|
|
if (_Adjustfield != ios_base::left
|
|
&& _Adjustfield != ios_base::internal)
|
|
{ // put leading fill
|
|
_Dest = _Rep(_Dest, _Fill, _Fillcount);
|
|
_Fillcount = 0;
|
|
}
|
|
else if (_Adjustfield == ios_base::internal)
|
|
{ // put internal fill
|
|
if (0 < _Count && (*_Buf == '+' || *_Buf == '-'))
|
|
{ // but first put sign
|
|
_Dest = _Putc(_Dest, _Buf, 1);
|
|
++_Buf, --_Count;
|
|
}
|
|
_Dest = _Rep(_Dest, _Fill, _Fillcount);
|
|
_Fillcount = 0;
|
|
}
|
|
|
|
const char *_Ptr = (const char *)::memchr(_Buf,
|
|
localeconv()->decimal_point[0], _Count); // find decimal point
|
|
if (_Ptr != 0)
|
|
{ // has decimal point, put pieces and zero fills
|
|
const _Mypunct& _Fac = _USE(_Iosbase.getloc(), _Mypunct);
|
|
size_t _Fracoffset = _Ptr - _Buf + 1;
|
|
_Dest = _Putc(_Dest, _Buf, _Fracoffset - 1);
|
|
_Dest = _Rep(_Dest, _E0, _Beforepoint);
|
|
_Dest = _Rep(_Dest, _Fac.decimal_point(), 1);
|
|
_Dest = _Rep(_Dest, _E0, _Afterpoint);
|
|
_Buf += _Fracoffset, _Count -= _Fracoffset;
|
|
}
|
|
|
|
if ((_Ptr = (const char *)::memchr(_Buf, 'e', _Count)) != 0)
|
|
{ // has exponent field, put it out
|
|
size_t _Expoffset = _Ptr - _Buf + 1;
|
|
_Dest = _Putc(_Dest, _Buf, _Expoffset - 1);
|
|
_Dest = _Rep(_Dest, _E0, _Trailing), _Trailing = 0;
|
|
_Dest = _Putc(_Dest, _Iosbase.flags() & ios_base::uppercase
|
|
? "E" : "e", 1);
|
|
_Buf += _Expoffset, _Count -= _Expoffset;
|
|
}
|
|
|
|
_Dest = _Putc(_Dest, _Buf, _Count); // put leftover field
|
|
_Dest = _Rep(_Dest, _E0, _Trailing); // put trailing zeros
|
|
_Iosbase.width(0);
|
|
return (_Rep(_Dest, _Fill, _Fillcount)); // put trailing fill
|
|
}
|
|
|
|
static char *__cdecl _Ifmt(char *_Fmt, const char *_Spec,
|
|
ios_base::fmtflags _Flags)
|
|
{ // generate sprintf format for integer
|
|
char *_Ptr = _Fmt;
|
|
*_Ptr++ = '%';
|
|
|
|
if (_Flags & ios_base::showpos)
|
|
*_Ptr++ = '+';
|
|
if (_Flags & ios_base::showbase)
|
|
*_Ptr++ = '#';
|
|
if (_Spec[0] != 'L')
|
|
*_Ptr++ = _Spec[0]; // qualifier
|
|
else
|
|
{ /* change L to I64 */
|
|
*_Ptr++ = 'I';
|
|
*_Ptr++ = '6';
|
|
*_Ptr++ = '4';
|
|
}
|
|
|
|
ios_base::fmtflags _Basefield = _Flags & ios_base::basefield;
|
|
*_Ptr++ = _Basefield == ios_base::oct ? 'o'
|
|
: _Basefield != ios_base::hex ? _Spec[1] // 'd' or 'u'
|
|
: _Flags & ios_base::uppercase ? 'X' : 'x';
|
|
*_Ptr = '\0';
|
|
return (_Fmt);
|
|
}
|
|
|
|
static _OutIt __cdecl _Iput(_OutIt _Dest, ios_base& _Iosbase, _Elem _Fill,
|
|
char *_Buf, size_t _Count)
|
|
{ // put formatted integer to _Dest
|
|
const size_t _Prefix = *_Buf == '+' || *_Buf == '-' ? 1
|
|
: *_Buf == '0' && (_Buf[1] == 'x' || _Buf[1] == 'X') ? 2
|
|
: 0;
|
|
const _Mypunct& _Fac = _USE(_Iosbase.getloc(), _Mypunct);
|
|
const string _Grouping = _Fac.grouping();
|
|
const _Elem _Kseparator = _Fac.thousands_sep();
|
|
bool _Grouped = '\0' < *_Grouping.c_str();
|
|
|
|
if (_Grouped)
|
|
{ // grouping specified, add thousands separators
|
|
const char *_Pg = _Grouping.c_str();
|
|
size_t _Off = _Count;
|
|
for (_Grouped = false; *_Pg != CHAR_MAX && '\0' < *_Pg
|
|
&& (size_t)*_Pg < _Off - _Prefix; _Grouped = true)
|
|
{ // add a comma to mark thousands separator
|
|
_Off -= *_Pg;
|
|
::memmove(&_Buf[_Off + 1], &_Buf[_Off],
|
|
_Count + 1 - _Off);
|
|
_Buf[_Off] = ',', ++_Count;
|
|
if ('\0' < _Pg[1])
|
|
++_Pg; // not last group, advance
|
|
}
|
|
}
|
|
|
|
size_t _Fillcount = _Iosbase.width() <= 0
|
|
|| (size_t)_Iosbase.width() <= _Count
|
|
? 0 : (size_t)_Iosbase.width() - _Count;
|
|
|
|
ios_base::fmtflags _Adjustfield =
|
|
_Iosbase.flags() & ios_base::adjustfield;
|
|
if (_Adjustfield != ios_base::left
|
|
&& _Adjustfield != ios_base::internal)
|
|
{ // put leading fill
|
|
_Dest = _Rep(_Dest, _Fill, _Fillcount);
|
|
_Fillcount = 0;
|
|
}
|
|
else if (_Adjustfield == ios_base::internal)
|
|
{ // put internal fill
|
|
_Dest = _Putc(_Dest, _Buf, _Prefix); // but first put prefix
|
|
_Buf += _Prefix, _Count -= _Prefix;
|
|
_Dest = _Rep(_Dest, _Fill, _Fillcount), _Fillcount = 0;
|
|
}
|
|
|
|
if (!_Grouped)
|
|
_Dest = _Putc(_Dest, _Buf, _Count); // put field
|
|
else
|
|
for (; ; ++_Buf, --_Count)
|
|
{ // put field with thousands separators for commas
|
|
size_t _Groupsize = strcspn(_Buf, ",");
|
|
_Dest = _Putc(_Dest, _Buf, _Groupsize);
|
|
_Buf += _Groupsize, _Count -= _Groupsize;
|
|
if (_Count == 0)
|
|
break;
|
|
if (_Kseparator != (_Elem)0)
|
|
_Dest = _Rep(_Dest, _Kseparator, 1);
|
|
}
|
|
|
|
_Iosbase.width(0);
|
|
return (_Rep(_Dest, _Fill, _Fillcount)); // put trailing fill
|
|
}
|
|
|
|
static _OutIt __cdecl _Put(_OutIt _Dest, const _Elem *_Ptr, size_t _Count)
|
|
{ // put [_Ptr, _Ptr + _Count) to _Dest
|
|
for (; 0 < _Count; --_Count, ++_Dest, ++_Ptr)
|
|
*_Dest = *_Ptr;
|
|
return (_Dest);
|
|
}
|
|
|
|
static _OutIt __cdecl _Putc(_OutIt _Dest, const char *_Ptr, size_t _Count)
|
|
{ // put char sequence [_Ptr, _Ptr + _Count) to _Dest
|
|
for (; 0 < _Count; --_Count, ++_Dest, ++_Ptr)
|
|
*_Dest = _WIDEN(_Elem, *_Ptr);
|
|
return (_Dest);
|
|
}
|
|
|
|
static _OutIt __cdecl _Rep(_OutIt _Dest, _Elem _Ch, size_t _Count)
|
|
{ // put _Count * _Ch to _Dest
|
|
for (; 0 < _Count; --_Count, ++_Dest)
|
|
*_Dest = _Ch;
|
|
return (_Dest);
|
|
}
|
|
};
|
|
|
|
// STATIC num_put::id OBJECT
|
|
template<class _Elem,
|
|
class _OutIt>
|
|
locale::id num_put<_Elem, _OutIt>::id;
|
|
|
|
#ifdef _DLL_CPPLIB
|
|
template class _CRTIMP2 numpunct<char>;
|
|
template class _CRTIMP2 numpunct<wchar_t>;
|
|
template class _CRTIMP2 num_get<char,
|
|
istreambuf_iterator<char, char_traits<char> > >;
|
|
template class _CRTIMP2 num_get<wchar_t,
|
|
istreambuf_iterator<wchar_t, char_traits<wchar_t> > >;
|
|
template class _CRTIMP2 num_put<char,
|
|
ostreambuf_iterator<char, char_traits<char> > >;
|
|
template class _CRTIMP2 num_put<wchar_t,
|
|
ostreambuf_iterator<wchar_t, char_traits<wchar_t> > >;
|
|
#endif // _DLL_CPPLIB
|
|
_STD_END
|
|
#pragma warning(pop)
|
|
#pragma pack(pop)
|
|
|
|
#endif /* _XLOCNUM_ */
|
|
|
|
/*
|
|
* Copyright (c) 1992-2001 by P.J. Plauger. ALL RIGHTS RESERVED.
|
|
* Consult your license regarding permissions and restrictions.
|
|
V3.10:0009 */
|