📄 _time.cc
字号:
/***************************************************************************
*
* _time.cc - Definitions for the Standard Library time facets
*
* $Id: _time.cc,v 1.4 2003/05/06 14:32:35 helenj Exp $
*
***************************************************************************
*
* Copyright (c) 1994-2001 Rogue Wave Software, Inc. All Rights Reserved.
*
* This computer software is owned by Rogue Wave Software, Inc. and is
* protected by U.S. copyright laws and other laws and by international
* treaties. This computer software is furnished by Rogue Wave Software,
* Inc. pursuant to a written license agreement and may be used, copied,
* transmitted, and stored only in accordance with the terms of such
* license and with the inclusion of the above copyright notice. This
* computer software or any other copies thereof may not be provided or
* otherwise made available to any other person.
*
* U.S. Government Restricted Rights. This computer software is provided
* with Restricted Rights. Use, duplication, or disclosure by the
* Government is subject to restrictions as set forth in subparagraph (c)
* (1) (ii) of The Rights in Technical Data and Computer Software clause
* at DFARS 252.227-7013 or subparagraphs (c) (1) and (2) of the
* Commercial Computer Software--Restricted Rights at 48 CFR 52.227-19,
* as applicable. Manufacturer is Rogue Wave Software, Inc., 5500
* Flatiron Parkway, Boulder, Colorado 80301 USA.
*
**************************************************************************/
#include _RWSTD_CTIME
_RWSTD_NAMESPACE_BEGIN (__rw)
// -------------------------------------------
// Template __rw_time_reader member templates.
// -------------------------------------------
template <class _CharT, class _InputIter>
bool __rw_time_reader<_CharT, _InputIter>::
_C_get_time_pattern (const string_type &__patt, tm *__tm) {
enum {
__edit_year = 0x01,
__edit_month = 0x02,
__edit_century = 0x04,
__edit_hour = 0x08
};
int __post_edits = 0;
const _CharT *__p = __patt.c_str (), *__patt_end = __p+__patt.length ();
for ( ; __p<__patt_end; ++__p) {
switch (this->_C_ctyp.narrow (*__p, ' ')) {
case '%':
{
int *__iresult;
int __ampm_dummy; // scratch space for ampm value
const __rw_keyword_map<_CharT> *__keywords = 0;
switch (this->_C_ctyp.narrow (*++__p, ' ')) {
case 'a':
case 'A':
// Day of week (abbreviated or not).
__keywords = &this->_C_get_day_map (_C_timp);
__iresult = &__tm->tm_wday;
break;
case 'b':
case 'B':
// Month name (abbreviated or not).
__keywords = &this->_C_get_month_map (_C_timp);
__iresult = &__tm->tm_mon;
break;
case 'm':
// Numeric month, comes in 1 higher than the number we want.
__post_edits |= __edit_month;
__iresult = &__tm->tm_mon;
break;
case 'c':
// Full date, time and year in default format.
return _C_get_time_pattern (this->_C_get_patt_string (_C_timp,
2),
__tm);
case 'd':
// Day of month.
__iresult = &__tm->tm_mday;
break;
case 'I': // 12-hour clock
case 'H': // 24-hour clock
// Hours (12/24 distinction is made in the 'p' section)
__iresult = &__tm->tm_hour;
break;
case 'p':
// am/pm indicator
__keywords = &this->_C_get_ampm_map (_C_timp);
// Assumes _CharT[0] are equal means entire string will be
if (*this->_C_in == this->_C_get_ampm_string (_C_timp, true)[0])
__post_edits |= __edit_hour;
__iresult = &__ampm_dummy;
break;
case 'M':
// Minutes.
__iresult = &__tm->tm_min;
break;
case 'S':
// Seconds.
__iresult = &__tm->tm_sec;
break;
case 'Y':
// Year with Century.
__post_edits |= __edit_year;
__iresult = &__tm->tm_year;
break;
case 'y':
// 2-digit Year without Century.
__post_edits |= (__edit_year|__edit_century);
__iresult = &__tm->tm_year;
break;
default:
// All other format characters are not supported on input.
return false;
}
if (__keywords) {
if ((*__iresult = this->_C_get_keyword (*__keywords)) < 0)
return false;
}
else {
this->_C_base = 10;
*__iresult =
this->_C_parse (this->_C_get_digit_string (this->_C_digits),
0UL);
}
}
break;
default:
if (!this->eof () && *this->_C_in==*__p)
++(this->_C_in);
else
return false;
}
if (this->_C_error)
return false;
}
if (__post_edits&__edit_year)
if (__post_edits&__edit_century && __tm->tm_year<100)
; // 2-digit year is already relative to 1900
else
__tm->tm_year -= 1900;
if (__post_edits&__edit_month)
__tm->tm_mon--;
if (__post_edits&__edit_hour)
if (__tm->tm_hour < 12)
__tm->tm_hour+=12;
return true;
}
_RWSTD_NAMESPACE_END // __rw
_RWSTD_NAMESPACE_BEGIN(std)
// ----------------------------------------------------------
// Facet time_get<_CharT, _InputIter> member templates.
// ---------------------------------------------------------
template <class _CharT, class _InputIter>
locale::id time_get<_CharT, _InputIter>::id;
template <class _CharT, class _InputIter>
time_base::dateorder time_get<_CharT, _InputIter>::do_date_order () const {
_C_check_init ();
// We would prefer to return a value that matches the date format defined
// in the timepunct facet in the caller's locale, but we can't get there
// from here ...
const _TYPENAME _RW::__rw_timepunct<_CharT>::string_type& __s =
_RW::__rw_keyword_cracker<_CharT>::_C_get_patt_string (*_C_timp, 0);
bool __haveYear = false;
for (size_t __i = 0; __i < __s.length (); ++__i) {
if (__s[__i] == _CharT ('y') || __s[__i] == _CharT ('Y'))
__haveYear = true;
if ( __s[__i] == _CharT ('d') || __s[__i] == _CharT ('a')
|| __s[__i] == _CharT ('A')) {
if (__haveYear)
return ydm;
else
return dmy;
}
if (__s[__i] == _CharT ('m') || __s[__i] == _CharT ('b')
|| __s[__i] == _CharT ('B')) {
if (__haveYear)
return ymd;
else
return mdy;
}
}
return no_order;
}
template <class _CharT, class _InputIter>
_TYPENAME time_get<_CharT, _InputIter>::iter_type
time_get<_CharT, _InputIter>::do_get_time (_InputIter __in,
_InputIter __end,
ios_base& __io,
ios_base::iostate& __err,
tm* __tm) const {
_C_check_init ();
_RW::__rw_time_reader<_CharT, _InputIter>
__rdr (__in, __end, __io, *_C_timp);
__err = ios_base::goodbit;
// Parse according to pattern 1 (strftime '%X' -- default time pattern)
if (!__rdr._C_get_time_pattern (__rdr._C_get_patt_string (__rdr._C_timp, 1),
__tm))
__err = ios_base::failbit;
if (__rdr.eof ())
__err |= ios_base::eofbit;
return __in;
}
template <class _CharT, class _InputIter >
_TYPENAME time_get<_CharT, _InputIter>::iter_type
time_get<_CharT, _InputIter>::do_get_date (_InputIter __in,
_InputIter __end,
ios_base& __io,
ios_base::iostate& __err,
tm* __tm) const {
_C_check_init ();
_RW::__rw_time_reader<_CharT, _InputIter>
__rdr (__in, __end, __io, *_C_timp);
__err = ios_base::goodbit;
// Parse according to pattern 0 (strftime '%x' -- default date pattern)
if (!__rdr._C_get_time_pattern (__rdr._C_get_patt_string (__rdr._C_timp, 0),
__tm))
__err = ios_base::failbit;
if (__rdr.eof ())
__err |= ios_base::eofbit;
return __in;
}
template <class _CharT, class _InputIter >
_TYPENAME time_get<_CharT, _InputIter>::iter_type
time_get<_CharT, _InputIter>::do_get_weekday (_InputIter __in,
_InputIter __end,
ios_base& __io,
ios_base::iostate& __err,
tm* __tm) const {
_C_check_init ();
_RW::__rw_time_reader<_CharT, _InputIter>
__rdr (__in, __end, __io, *_C_timp);
int __wd = __rdr._C_get_keyword (__rdr._C_get_day_map (__rdr._C_timp));
__err = ios_base::goodbit;
if (__wd<0)
__err = ios_base::failbit;
else
__tm->tm_wday = __wd;
if (__rdr.eof ())
__err |= ios_base::eofbit;
return __in;
}
template <class _CharT, class _InputIter >
_TYPENAME time_get<_CharT, _InputIter>::iter_type
time_get<_CharT, _InputIter>::do_get_monthname (_InputIter __in,
_InputIter __end,
ios_base& __io,
ios_base::iostate& __err,
tm* __tm) const {
_C_check_init ();
_RW::__rw_time_reader<_CharT, _InputIter>
__rdr (__in, __end, __io, *_C_timp);
int __mo = __rdr._C_get_keyword (__rdr._C_get_month_map (__rdr._C_timp));
__err = ios_base::goodbit;
if (__mo<0)
__err = ios_base::failbit;
else
__tm->tm_mon = __mo;
if (__rdr.eof ())
__err |= ios_base::eofbit;
return __in;
}
template <class _CharT, class _InputIter >
_TYPENAME time_get<_CharT, _InputIter>::iter_type
time_get<_CharT, _InputIter>::do_get_year (_InputIter __in,
_InputIter __end,
ios_base& __io,
ios_base::iostate& __err,
tm* __tm) const {
_C_check_init ();
_RW::__rw_time_reader<_CharT, _InputIter>
__rdr (__in, __end, __io, *_C_timp);
int __yr = __rdr._C_parse (__rdr._C_get_digits (int ()), int ());
__err = ios_base::goodbit;
// 2-digit year numbers are accepted, but are not treated specially, and so
// end up in the 1st century C.E.
if (__rdr._C_error)
__err = ios_base::failbit;
else
__tm->tm_year = __yr-1900;
if (__rdr.eof ())
__err |= ios_base::eofbit;
return __in;
}
// ----------------------------------------------------------
// Facet time_put<_CharT, _InputIter> member templates.
// ----------------------------------------------------------
template <class _CharT, class _OutputIter>
locale::id time_put<_CharT, _OutputIter>::id;
⌨️ 快捷键说明
复制代码
Ctrl + C
搜索代码
Ctrl + F
全屏模式
F11
切换主题
Ctrl + Shift + D
显示快捷键
?
增大字号
Ctrl + =
减小字号
Ctrl + -