windows-nt/Source/XPSP1/NT/base/crts/libw32/include/xloctime

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2020-09-26 03:20:57 -05:00
// xloctime internal header (from <locale>)
#pragma once
#ifndef _XLOCTIME_
#define _XLOCTIME_
#include <ctime>
#include <xiosbase>
#pragma pack(push,8)
#pragma warning(push,3)
_STD_BEGIN
// STRUCT time_base
struct _CRTIMP2 time_base
: public locale::facet
{ // base class for time_get
enum dateorder
{ // constants for different orders of date components
no_order, dmy, mdy, ymd, ydm};
time_base(size_t _Refs = 0)
: locale::facet(_Refs)
{ // default constructor
}
};
// TEMPLATE CLASS time_get
template<class _Elem,
class _InIt = istreambuf_iterator<_Elem, char_traits<_Elem> > >
class time_get
: public time_base
{ // facet for converting text to encoded times
public:
typedef _Elem char_type;
typedef _InIt iter_type;
static locale::id id; // unique facet id
dateorder date_order() const
{ // return date order code
return (do_date_order());
}
_InIt get_time(_InIt _First, _InIt _Last, ios_base& _Iosbase,
ios_base::iostate& _State, tm *_Pt) const
{ // get time of day from [_First, _Last) into _Pt
return (do_get_time(_First, _Last, _Iosbase, _State, _Pt));
}
_InIt get_date(_InIt _First, _InIt _Last, ios_base& _Iosbase,
ios_base::iostate& _State, tm *_Pt) const
{ // get date from [_First, _Last) into _Pt
return (do_get_date(_First, _Last, _Iosbase, _State, _Pt));
}
_InIt get_weekday(_InIt _First, _InIt _Last, ios_base& _Iosbase,
ios_base::iostate& _State, tm *_Pt) const
{ // get weekday from [_First, _Last) into _Pt
return (do_get_weekday(_First, _Last, _Iosbase, _State, _Pt));
}
_InIt get_monthname(_InIt _First, _InIt _Last, ios_base& _Iosbase,
ios_base::iostate& _State, tm *_Pt) const
{ // get month from [_First, _Last) into _Pt
return (do_get_monthname(_First, _Last, _Iosbase, _State, _Pt));
}
_InIt get_year(_InIt _First, _InIt _Last, ios_base& _Iosbase,
ios_base::iostate& _State, tm *_Pt) const
{ // get year from [_First, _Last) into _Pt
return (do_get_year(_First, _Last, _Iosbase, _State, _Pt));
}
explicit time_get(size_t _Refs = 0)
: time_base(_Refs)
{ // construct from current locale
_Init(_Locinfo());
}
time_get(const _Locinfo& _Lobj, size_t _Refs = 0)
: time_base(_Refs)
{ // construct from specified locale
_Init(_Lobj);
}
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 time_get<_Elem, _InIt>;
return (_X_TIME);
}
_PROTECTED:
virtual ~time_get()
{ // destroy the object
_Tidy();
}
protected:
void _Init(const _Locinfo& _Lobj)
{ // initialize from _Lobj
_Days = 0;
_Months = 0;
_TRY_BEGIN
_Days = _MAKLOCSTR(_Elem, _Lobj._Getdays(), _Lobj._Getcvt());
_Months = _MAKLOCSTR(_Elem, _Lobj._Getmonths(), _Lobj._Getcvt());
_Dateorder = (dateorder)_Lobj._Getdateorder();
_CATCH_ALL
_Tidy();
_RERAISE;
_CATCH_END
}
virtual dateorder do_date_order() const
{ // return date order code
return (_Dateorder);
}
virtual _InIt do_get_time(_InIt _First, _InIt _Last, ios_base&,
ios_base::iostate& _State, tm *_Pt) const
{ // get time of day from [_First, _Last) into _Pt
const _Elem _Colon = _WIDEN(_Elem, ':');
_State |= _Getint(_First, _Last, 0, 23, _Pt->tm_hour);
if (_State != ios_base::goodbit || *_First != _Colon)
_State |= ios_base::failbit; // hour field is bad
else
_State |= _Getint(++_First, _Last, 0, 59, _Pt->tm_min);
if (_State != ios_base::goodbit || *_First != _Colon)
_State |= ios_base::failbit; // min field is bad
else
_State |= _Getint(++_First, _Last, 0, 59, _Pt->tm_sec);
return (_First);
}
virtual _InIt do_get_date(_InIt _First, _InIt _Last, ios_base& _Iosbase,
ios_base::iostate& _State, tm *_Pt) const
{ // get date from [_First, _Last) into _Pt
const _Elem _E0 = _WIDEN(_Elem, '0');
const _Elem _E9 = _WIDEN(_Elem, '9');
const _Elem _Colon = _WIDEN(_Elem, ':');
const _Elem _Comma = _WIDEN(_Elem, ',');
const _Elem _Slash = _WIDEN(_Elem, '/');
const _Elem _Space = _WIDEN(_Elem, ' ');
dateorder _Dorder = date_order();
if (_Dorder == no_order)
_Dorder = mdy;
if (*_First < _E0 || _E9 < *_First)
{ // begins with month name, assume mdy
_First = get_monthname(_First, _Last, _Iosbase, _State, _Pt);
_Dorder = mdy;
}
else if (_Dorder == mdy)
{ // get month number
_State |= _Getint(_First, _Last, 1, 12, _Pt->tm_mon);
--_Pt->tm_mon;
}
else if (_Dorder == dmy)
_State |= _Getint(_First, _Last, 1, 31, _Pt->tm_mday);
else // ymd or ydm
_First = get_year(_First, _Last, _Iosbase, _State, _Pt);
if (_State == ios_base::goodbit)
{ // skip spaces [:,/] spaces
while (*_First == _Space)
++_First;
if (*_First == _Colon || *_First == _Comma || *_First == _Slash)
++_First;
while (*_First == _Space)
++_First;
}
if (_State != ios_base::goodbit)
;
else if (*_First < _E0 || _E9 < *_First)
if (_Dorder == mdy)
_State |= ios_base::failbit; // error, month already seen
else
{ // month name is second, like it or not
_First = get_monthname(_First, _Last, _Iosbase, _State, _Pt);
if (_Dorder == ydm)
_Dorder = ymd;
}
else if (_Dorder == dmy || _Dorder == ymd)
{ // get month number
_State |= _Getint(_First, _Last, 1, 12, _Pt->tm_mon);
--_Pt->tm_mon;
}
else
_State |= _Getint(_First, _Last, 1, 31, _Pt->tm_mday);
if (_State == ios_base::goodbit)
{ // skip spaces [:,/] spaces
while (*_First == _Space)
++_First;
if (*_First == _Colon || *_First == _Comma || *_First == _Slash)
++_First;
while (*_First == _Space)
++_First;
}
if (_State != ios_base::goodbit)
;
else if (*_First < _E0 || _E9 < *_First)
if (_Dorder != ydm)
_State |= ios_base::failbit; // error, month out of place
else
_First = get_monthname(_First, _Last, _Iosbase, _State, _Pt);
else if (_Dorder == ydm)
{ // get month number
_State |= _Getint(_First, _Last, 1, 12, _Pt->tm_mon);
--_Pt->tm_mon;
}
else if (_Dorder == ymd)
_State |= _Getint(_First, _Last, 1, 31, _Pt->tm_mday);
else // mdy or dmy
_First = get_year(_First, _Last, _Iosbase, _State, _Pt);
if (_First == _Last)
_State |= ios_base::eofbit;
return (_First);
}
virtual _InIt do_get_weekday(_InIt _First, _InIt _Last, ios_base&,
ios_base::iostate& _State, tm *_Pt) const
{ // get weekday from [_First, _Last) into _Pt
int _Num = _Getloctxt(_First, _Last, (size_t)0, _Days);
if (_Num < 0)
_State |= ios_base::failbit;
else
_Pt->tm_wday = _Num >> 1; // set wday
return (_First);
}
virtual _InIt do_get_monthname(_InIt _First, _InIt _Last, ios_base&,
ios_base::iostate& _State, tm *_Pt) const
{ // get month from [_First, _Last) into _Pt
int _Num = _Getloctxt(_First, _Last, (size_t)0, _Months);
if (_Num < 0)
_State |= ios_base::failbit;
else
_Pt->tm_mon = _Num >> 1; // set mon
return (_First);
}
virtual _InIt do_get_year(_InIt _First, _InIt _Last, ios_base&,
ios_base::iostate& _State, tm *_Pt) const
{ // get year from [_First, _Last) into _Pt
int _Ans = 0;
_State |= _Getint(_First, _Last, 0, 2035, _Ans);
if (_State & ios_base::failbit)
;
else if (1900 <= _Ans)
_Ans -= 1900; // [1900, ...) as is
else if (2035 - 1900 < _Ans)
_State |= ios_base::failbit;
if (!(_State & ios_base::failbit))
_Pt->tm_year = _Ans; // set year
return (_First);
}
private:
static ios_base::iostate __cdecl _Getint(_InIt& _First, _InIt& _Last,
int _Lo, int _Hi, int& _Val)
{ // get integer in range [_Lo, _Hi] from [_First, _Last)
char _Ac[_MAX_INT_DIG], *_Ep;
char *_Ptr = _Ac;
if (_First == _Last)
;
else if (*_First == _WIDEN(_Elem, '+'))
*_Ptr++ = '+', ++_First; // copy plus sign
else if (*_First == _WIDEN(_Elem, '-'))
*_Ptr++ = '-', ++_First; // copy minus sign
bool _Seendigit = false;
while (_First != _Last && *_First == _WIDEN(_Elem, '0'))
_Seendigit = true, ++_First; // strip leading zeros
if (_Seendigit)
*_Ptr++ = '0'; // replace one or more with single zero
for (char *const _Pe = &_Ac[_MAX_INT_DIG - 1]; _First != _Last
&& '0' <= (*_Ptr = _NARROW(_Elem, *_First)) && *_Ptr <= '9';
_Seendigit = true, ++_First) // copy digits
if (_Ptr < _Pe)
++_Ptr; // drop trailing digits if already too large
if (!_Seendigit)
_Ptr = _Ac;
*_Ptr = '\0';
errno = 0;
const long _Ans = strtol(_Ac, &_Ep, 10);
ios_base::iostate _State = ios_base::goodbit;
if (_First == _Last)
_State |= ios_base::eofbit;
if (_Ep == _Ac || errno != 0 || _Ans < _Lo || _Hi < _Ans)
_State |= ios_base::failbit; // bad conversion
else
_Val = _Ans; // store valid result
return (_State);
}
void _Tidy()
{ // free all storage
_DELETE_CRT_VEC((void *)_Days);
_DELETE_CRT_VEC((void *)_Months);
}
const _Elem *_Days; // ":Sun:Sunday:Mon:Monday..." for example
const _Elem *_Months; // "Jan:January:Feb:February..." for example
dateorder _Dateorder;
};
// STATIC time_get::id OBJECT
template<class _Elem,
class _InIt>
locale::id time_get<_Elem, _InIt>::id;
// TEMPLATE CLASS time_get_byname
template<class _Elem,
class _InIt = istreambuf_iterator<_Elem, char_traits<_Elem> > >
class time_get_byname
: public time_get<_Elem, _InIt>
{ // time_get for named locale
public:
explicit time_get_byname(const char *_Locname, size_t _Refs = 0)
: time_get<_Elem, _InIt>(_Locinfo(_Locname), _Refs)
{ // construct for named locale
}
_PROTECTED:
virtual ~time_get_byname()
{ // destroy the object
}
};
// TEMPLATE CLASS time_put
template<class _Elem,
class _OutIt = ostreambuf_iterator<_Elem, char_traits<_Elem> > >
class time_put
: public locale::facet
{ // facet for converting encoded times to text
public:
typedef _Elem char_type;
typedef _OutIt iter_type;
_OutIt put(_OutIt _Dest, ios_base& _Iosbase, _Elem _Fill, const tm *_Pt,
const _Elem *_Fmtfirst, const _Elem *_Fmtlast) const
{ // put formatted time from _Pt to _Dest for [_Fmtfirst, _Fmtlast)
const _Elem _Percent = _WIDEN(_Elem, '%');
for (; _Fmtfirst != _Fmtlast; ++_Fmtfirst)
if (*_Fmtfirst != _Percent)
*_Dest++ = *_Fmtfirst; // copy literal element
else if (++_Fmtfirst == _Fmtlast)
{ // treat trailing % as %%
*_Dest++ = _Percent;
break;
}
else
{ // get specifier after %
char _Specifier = _NARROW(_Elem, *_Fmtfirst);
char _Qualifier = '\0';
if (_Specifier != 'E' && _Specifier != 'O'
&& _Specifier != 'Q' && _Specifier != '#')
; // not [E0Q#] qualifier, treat as specifier
else if (++_Fmtfirst == _Fmtlast)
{ // no specifier, copy %[E0Q#] as literal elements
*_Dest++ = _Percent, *_Dest++ = _Specifier;
break;
}
else
{ // save both qualifier and specifier
_Qualifier = _Specifier;
_Specifier = _NARROW(_Elem, *_Fmtfirst);
}
_Dest = do_put(_Dest, _Iosbase, _Fill, _Pt,
_Specifier, _Qualifier); // convert a single field
}
return (_Dest);
}
_OutIt put(_OutIt _Dest, ios_base& _Iosbase, _Elem _Fill, const tm *_Pt,
char _Specifier, char _Modifier = 0) const
{ // put formatted time from _Pt to _Dest for _Specifier/_Modifier
return (do_put(_Dest, _Iosbase, _Fill, _Pt, _Specifier, _Modifier));
}
static locale::id id; // unique facet id
explicit time_put(size_t _Refs = 0)
: locale::facet(_Refs)
{ // construct from current locale
_Init(_Locinfo());
}
time_put(const _Locinfo& _Lobj, size_t _Refs = 0)
: locale::facet(_Refs)
{ // construct from specified locale
_Init(_Lobj);
}
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 time_put<_Elem, _OutIt>;
return (_X_TIME);
}
_PROTECTED:
virtual ~time_put()
{ // destroy the object
}
protected:
void _Init(const _Locinfo& _Lobj)
{ // initialize from _Lobj
_Tnames = _Lobj._Gettnames();
}
virtual _OutIt do_put(_OutIt _Dest, ios_base&, _Elem, const tm *_Pt,
char _Specifier, char _Modifier = 0) const
{ // put formatted time from _Pt to _Dest for [_Fmtfirst, _Fmtlast)
char _Fmt[5] = "!%x\0"; // '!' for nonzero count, null for modifier
size_t _Count, _Num;
string _Str;
if (_Modifier == (_Elem)0)
_Fmt[2] = _Specifier;
else
_Fmt[2] = _Modifier, _Fmt[3] = _Specifier;
for (_Num = 16; ; _Num *= 2)
{ // convert into ever larger string buffer until success
_Str.append(_Num, '\0');
if (0 < (_Count = _Strftime(&*_Str.begin(), _Str.size(),
_Fmt, _Pt, _Tnames._Getptr())))
break;
}
for (string::const_iterator _Snext = _Str.begin();
0 < --_Count; ++_Dest)
*_Dest = _WIDEN(_Elem, *++_Snext); // skip literal '!'
return (_Dest);
}
private:
_Locinfo::_Timevec _Tnames; // locale-specific stuff for _Strftime
};
// STATIC time_put::id OBJECT
template<class _Elem,
class _OutIt>
locale::id time_put<_Elem, _OutIt>::id;
// CLASS time_put<wchar_t>
template<> class _CRTIMP2 time_put<wchar_t,
ostreambuf_iterator<wchar_t, char_traits<wchar_t> > >
: public locale::facet
{ // facet for converting encoded times to wchar_t text
typedef wchar_t _Elem;
typedef ostreambuf_iterator<wchar_t, char_traits<wchar_t> > _OutIt;
public:
typedef _Elem char_type;
typedef _OutIt iter_type;
_OutIt put(_OutIt _Dest, ios_base& _Iosbase, _Elem _Fill, const tm *_Pt,
const _Elem *_Fmtfirst, const _Elem *_Fmtlast) const
{ // put formatted time from _Pt to _Dest for [_Fmtfirst, _Fmtlast)
const _Elem _Percent = _WIDEN(_Elem, '%');
for (; _Fmtfirst != _Fmtlast; ++_Fmtfirst)
if (*_Fmtfirst != _Percent)
*_Dest++ = *_Fmtfirst; // copy literal element
else if (++_Fmtfirst == _Fmtlast)
{ // treat trailing % as %%
*_Dest++ = _Percent;
break;
}
else
{ // get specifier after %
char _Specifier = _NARROW(_Elem, *_Fmtfirst);
char _Qualifier = '\0';
if (_Specifier != 'E' && _Specifier != 'O'
&& _Specifier != 'Q' && _Specifier != '#')
; // not [E0Q#] qualifier, treat as specifier
else if (++_Fmtfirst == _Fmtlast)
{ // no specifier, copy %[E0Q#] as literal elements
*_Dest++ = _Percent, *_Dest++ = _Specifier;
break;
}
else
{ // save both qualifier and specifier
_Qualifier = _Specifier;
_Specifier = _NARROW(_Elem, *_Fmtfirst);
}
_Dest = do_put(_Dest, _Iosbase, _Fill, _Pt,
_Specifier, _Qualifier); // convert a single field
}
return (_Dest);
}
_OutIt put(_OutIt _Dest, ios_base& _Iosbase, _Elem _Fill, const tm *_Pt,
char _Specifier, char _Modifier = 0) const
{ // put formatted time from _Pt to _Dest for _Specifier/_Modifier
return (do_put(_Dest, _Iosbase, _Fill, _Pt, _Specifier, _Modifier));
}
static locale::id id; // unique facet id
explicit time_put(size_t _Refs = 0)
: locale::facet(_Refs)
{ // construct from current locale
_Init(_Locinfo());
}
time_put(const _Locinfo& _Lobj, size_t _Refs = 0)
: locale::facet(_Refs)
{ // construct from specified locale
_Init(_Lobj);
}
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 time_put<_Elem, _OutIt>;
return (_X_TIME);
}
_PROTECTED:
virtual ~time_put()
{ // destroy the object
}
protected:
void _Init(const _Locinfo& _Lobj)
{ // initialize from _Lobj
_Tnames = _Lobj._Gettnames();
_Cvt = _Lobj._Getcvt();
}
virtual _OutIt do_put(_OutIt _Dest, ios_base&, _Elem, const tm *_Pt,
char _Specifier, char _Modifier = 0) const
{ // put formatted time from _Pt to _Dest for [_Fmtfirst, _Fmtlast)
char _Fmt[5] = "!%x\0"; // '!' for nonzero count, null for modifier
size_t _Count, _Num;
string _Str;
if (_Modifier == (_Elem)0)
_Fmt[2] = _Specifier;
else
_Fmt[2] = _Modifier, _Fmt[3] = _Specifier;
for (_Num = 16; ; _Num *= 2)
{ // convert into ever larger string buffer until success
_Str.append(_Num, '\0');
if (0 < (_Count = _Strftime(&*_Str.begin(), _Str.size(),
_Fmt, _Pt, _Tnames._Getptr())))
break;
}
_Mbstinit(_Mbst);
--_Count;
for (string::const_iterator _Snext = _Str.begin() + 1;
0 < _Count; ++_Dest)
{ // convert to wchar_t, skip literal '!'
wchar_t _Wc;
int _Bytes;
switch (_Bytes = _Mbrtowc(&_Wc, &*_Snext, _Count, &_Mbst, &_Cvt))
{
case -2: // partial conversion
case -1: // failed conversion
return (_Dest);
case 0: // converted null character
_Bytes = (int)::strlen(&*_Snext) + 1;
// fall through
default: // converted _Bytes bytes to a wchar_t
*_Dest = _Wc;
_Snext += _Bytes, _Count -= _Bytes;
}
}
return (_Dest);
}
private:
_Locinfo::_Timevec _Tnames; // locale-specific stuff for _Strftime
_Locinfo::_Cvtvec _Cvt; // conversion information
};
// TEMPLATE CLASS time_put_byname
template<class _Elem,
class _OutIt = ostreambuf_iterator<_Elem, char_traits<_Elem> > >
class time_put_byname
: public time_put<_Elem, _OutIt>
{ // time_put for named locale
public:
explicit time_put_byname(const char *_Locname, size_t _Refs = 0)
: time_put<_Elem, _OutIt>(_Locinfo(_Locname), _Refs)
{ // construct for named locale
}
_PROTECTED:
virtual ~time_put_byname()
{ // destroy the object
}
};
#ifdef _DLL_CPPLIB
template class _CRTIMP2 time_get<char,
istreambuf_iterator<char, char_traits<char> > >;
template class _CRTIMP2 time_get<wchar_t,
istreambuf_iterator<wchar_t, char_traits<wchar_t> > >;
template class _CRTIMP2 time_put<char,
ostreambuf_iterator<char, char_traits<char> > >;
template class _CRTIMP2 time_put<wchar_t,
ostreambuf_iterator<wchar_t, char_traits<wchar_t> > >;
#endif // _DLL_CPPLIB
_STD_END
#pragma warning(pop)
#pragma pack(pop)
#endif /* _XLOCTIME_ */
/*
* Copyright (c) 1992-2001 by P.J. Plauger. ALL RIGHTS RESERVED.
* Consult your license regarding permissions and restrictions.
V3.10:0009 */