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STLPORT/stlport/stl/_time_facets.h
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STLPORT/stlport/stl/_time_facets.h
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/*
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* Copyright (c) 1999
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* Silicon Graphics Computer Systems, Inc.
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*
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* Copyright (c) 1999
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* Boris Fomitchev
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*
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* This material is provided "as is", with absolutely no warranty expressed
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* or implied. Any use is at your own risk.
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*
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* Permission to use or copy this software for any purpose is hereby granted
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* without fee, provided the above notices are retained on all copies.
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* Permission to modify the code and to distribute modified code is granted,
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* provided the above notices are retained, and a notice that the code was
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* modified is included with the above copyright notice.
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*
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*/
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// WARNING: This is an internal header file, included by other C++
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// standard library headers. You should not attempt to use this header
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// file directly.
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#ifndef _STLP_INTERNAL_TIME_FACETS_H
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#define _STLP_INTERNAL_TIME_FACETS_H
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#ifndef _STLP_CTIME
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# include <ctime> // Needed (for struct tm) by time facets
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#endif
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#include <stl/c_locale.h>
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#include <stl/_ios_base.h>
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_STLP_BEGIN_NAMESPACE
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// Template functions used by time_get
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// Matching input against a list of names
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// Alphabetic input of the names of months and the names
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// of weekdays requires matching input against a list of names.
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// We use a simple generic algorithm to accomplish this. This
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// algorithm is not very efficient, especially for longer lists
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// of names, but it probably does not matter for the initial
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// implementation and it may never matter, since we do not expect
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// this kind of input to be used very often. The algorithm
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// could be improved fairly simply by creating a new list of
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// names still in the running at each iteration. A more sophisticated
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// approach would be to build a trie to do the matching.
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//
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// We compare each character of the input to the corresponding
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// character of each name on the list that has not been eliminated,
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// either because every character in the name has already been
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// matched, or because some character has not been matched. We
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// continue only as long as there are some names that have not been
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// eliminated.
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// We do not really need a random access iterator (a forward iterator
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// would do), but the extra generality makes the notation clumsier,
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// and we don't really need it.
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// We can recognize a failed match by the fact that the second
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// component of the return value will be __name_end.
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#define _MAXNAMES 64
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#define _MAX_NAME_LENGTH 64
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// Both time_get and time_put need a structure of type _Time_Info
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// to provide names and abbreviated names for months and days,
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// as well as the am/pm designator. The month and weekday tables
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// have the all the abbreviated names before all the full names.
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// The _Time_Info tables are initialized using the non-template
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// function _Init_timeinfo, which has two overloadings: one
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// with a single reference parameter for the table to be initialized,
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// and one with a second _Locale_time * parameter. The first form
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// is called by the default constructor and the second by a special
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// constructor invoked from the _byname subclass constructor to
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// construct the base class.
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class _STLP_CLASS_DECLSPEC _Time_Info {
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public:
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string _M_dayname[14];
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string _M_monthname[24];
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string _M_am_pm[2];
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string _M_time_format;
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string _M_date_format;
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string _M_date_time_format;
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string _M_long_date_format;
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string _M_long_date_time_format;
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};
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void _STLP_CALL _Init_timeinfo(_Time_Info&);
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void _STLP_CALL _Init_timeinfo(_Time_Info&, _Locale_time*);
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class _STLP_CLASS_DECLSPEC time_base {
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public:
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enum dateorder {no_order, dmy, mdy, ymd, ydm};
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};
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template <class _Ch, __DFL_TMPL_PARAM( _InIt , istreambuf_iterator<_Ch>) >
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class time_get : public locale::facet, public time_base
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{
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friend class _Locale;
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public:
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typedef _Ch char_type;
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typedef _InIt iter_type;
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explicit time_get(size_t __refs = 0) : _BaseFacet(__refs) {
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_Init_timeinfo(_M_timeinfo);
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}
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dateorder date_order() const { return do_date_order(); }
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iter_type get_time(iter_type __s, iter_type __end, ios_base& __str,
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ios_base::iostate& __err, tm* __t) const
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{ return do_get_time(__s, __end, __str, __err, __t); }
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iter_type get_date(iter_type __s, iter_type __end, ios_base& __str,
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ios_base::iostate& __err, tm* __t) const
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{ return do_get_date(__s, __end, __str, __err, __t); }
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iter_type get_weekday(iter_type __s, iter_type __end, ios_base& __str,
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ios_base::iostate& __err, tm* __t) const
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{ return do_get_weekday(__s, __end, __str, __err, __t); }
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iter_type get_monthname(iter_type __s, iter_type __end, ios_base& __str,
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ios_base::iostate& __err, tm* __t) const
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{ return do_get_monthname(__s, __end, __str, __err, __t); }
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iter_type get_year(iter_type __s, iter_type __end, ios_base& __str,
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ios_base::iostate& __err, tm* __t) const
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{ return do_get_year(__s, __end, __str, __err, __t); }
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_STLP_STATIC_MEMBER_DECLSPEC static locale::id id;
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protected:
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_Time_Info _M_timeinfo;
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time_get(_Locale_time *, size_t __refs) : _BaseFacet(__refs) {}
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~time_get() {}
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virtual dateorder do_date_order() const {return no_order;}
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virtual iter_type do_get_time(iter_type __s, iter_type __end,
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ios_base&, ios_base::iostate& __err,
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tm* __t) const;
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virtual iter_type do_get_date(iter_type __s, iter_type __end,
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ios_base&, ios_base::iostate& __err,
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tm* __t) const;
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virtual iter_type do_get_weekday(iter_type __s, iter_type __end,
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ios_base&,
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ios_base::iostate& __err,
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tm* __t) const;
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virtual iter_type do_get_monthname(iter_type __s, iter_type __end,
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ios_base&,
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ios_base::iostate& __err,
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tm* __t) const;
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virtual iter_type do_get_year(iter_type __s, iter_type __end,
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ios_base&, ios_base::iostate& __err,
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tm* __t) const;
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};
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time_base::dateorder _STLP_CALL
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__get_date_order(_Locale_time*);
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_Locale_time* _STLP_CALL __acquire_time(const char* __name);
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void _STLP_CALL __release_time(_Locale_time* __time);
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template <class _Ch, __DFL_TMPL_PARAM( _InIt , istreambuf_iterator<_Ch>) >
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class time_get_byname : public time_get<_Ch, _InIt>
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{
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public:
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typedef time_base::dateorder dateorder;
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typedef _InIt iter_type;
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explicit time_get_byname(const char* __name, size_t __refs = 0)
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: time_get<_Ch, _InIt>((_Locale_time*) 0, __refs),
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_M_time(__acquire_time(__name))
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{ _Init_timeinfo(this->_M_timeinfo, this->_M_time); }
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protected:
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~time_get_byname() { __release_time(_M_time); }
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dateorder do_date_order() const { return __get_date_order(_M_time); }
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private:
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_Locale_time* _M_time;
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};
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// time_put facet
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// For the formats 'x, 'X', and 'c', do_put calls the first form of
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// put with the pattern obtained from _M_timeinfo._M_date_format or
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// _M_timeinfo._M_time_format.
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// Helper function: __ takes a single-character
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// format. As indicated by the foregoing remark, this will never be
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// 'x', 'X', or 'c'.
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char * _STLP_CALL
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__write_formatted_time(char * __buf, char __format, char __modifier,
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const _Time_Info& __table, const tm* __t);
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template <class _OuIt>
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inline _OuIt _STLP_CALL __put_time(char * __first, char * __last, _OuIt __out,
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const ios_base& /* __loc */, char) {
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return copy(__first, __last, __out);
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}
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# ifndef _STLP_NO_WCHAR_T
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template <class _OuIt>
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_OuIt _STLP_CALL __put_time(char * __first, char * __last, _OuIt __out,
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const ios_base& __s, wchar_t);
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# endif
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template<class _Ch, __DFL_TMPL_PARAM( _OutputIter , ostreambuf_iterator<_Ch> ) >
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class time_put : public locale::facet, public time_base
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{
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friend class _Locale;
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public:
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typedef _Ch char_type;
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typedef _OutputIter iter_type;
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explicit time_put(size_t __refs = 0) : _BaseFacet(__refs) {
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_Init_timeinfo(_M_timeinfo);
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}
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_OutputIter put(iter_type __s, ios_base& __f, _Ch __fill,
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const tm* __tmb,
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const _Ch* __pat, const _Ch* __pat_end) const;
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_OutputIter put(iter_type __s, ios_base& __f, _Ch __fill,
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const tm* __tmb, char __format, char __modifier = 0) const {
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return do_put(__s, __f, __fill, __tmb, __format, __modifier);
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}
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_STLP_STATIC_MEMBER_DECLSPEC static locale::id id;
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protected:
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_Time_Info _M_timeinfo;
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time_put(_Locale_time* /*__time*/, size_t __refs) : _BaseFacet(__refs) {
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// _Init_timeinfo(_M_timeinfo, __time);
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}
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~time_put() {}
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virtual iter_type do_put(iter_type __s, ios_base& __f,
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char_type /* __fill */, const tm* __tmb,
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char __format, char /* __modifier */) const;
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};
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template <class _Ch, __DFL_TMPL_PARAM( _InIt , ostreambuf_iterator<_Ch> ) >
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class time_put_byname : public time_put<_Ch, _InIt>
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{
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friend class _Locale;
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public:
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typedef time_base::dateorder dateorder;
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typedef _InIt iter_type;
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typedef _Ch char_type;
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explicit time_put_byname(const char * __name, size_t __refs = 0)
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: time_put<_Ch, _InIt>((_Locale_time*) 0, __refs),
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_M_time(__acquire_time(__name))
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{ _Init_timeinfo(this->_M_timeinfo, this->_M_time); }
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protected:
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~time_put_byname() { __release_time(_M_time); }
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private:
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_Locale_time* _M_time;
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};
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# ifdef _STLP_USE_TEMPLATE_EXPORT
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_STLP_EXPORT_TEMPLATE_CLASS time_get<char, istreambuf_iterator<char, char_traits<char> > >;
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_STLP_EXPORT_TEMPLATE_CLASS time_put<char, ostreambuf_iterator<char, char_traits<char> > >;
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// _STLP_EXPORT_TEMPLATE_CLASS time_get<char, const char*>;
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// _STLP_EXPORT_TEMPLATE_CLASS time_put<char, char*>;
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# ifndef _STLP_NO_WCHAR_T
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_STLP_EXPORT_TEMPLATE_CLASS time_get<wchar_t, istreambuf_iterator<wchar_t, char_traits<wchar_t> > >;
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_STLP_EXPORT_TEMPLATE_CLASS time_put<wchar_t, ostreambuf_iterator<wchar_t, char_traits<wchar_t> > >;
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// _STLP_EXPORT_TEMPLATE_CLASS time_get<wchar_t, const wchar_t*>;
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// _STLP_EXPORT_TEMPLATE_CLASS time_put<wchar_t, wchar_t*>;
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# endif /* INSTANTIATE_WIDE_STREAMS */
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# endif
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# if defined (__BORLANDC__) && defined (_RTLDLL)
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inline void _Stl_loc_init_time_facets() {
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time_get<char, istreambuf_iterator<char, char_traits<char> > >::id._M_index = 16;
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time_get<char, const char*>::id._M_index = 17;
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time_put<char, ostreambuf_iterator<char, char_traits<char> > >::id._M_index = 18;
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time_put<char, char*>::id._M_index = 19;
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# ifndef _STLP_NO_WCHAR_T
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time_get<wchar_t, istreambuf_iterator<wchar_t, char_traits<wchar_t> > >::id._M_index = 35;
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time_get<wchar_t, const wchar_t*>::id._M_index = 36;
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time_put<wchar_t, ostreambuf_iterator<wchar_t, char_traits<wchar_t> > >::id._M_index = 37;
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time_put<wchar_t, wchar_t*>::id._M_index = 38;
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# endif
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}
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# endif
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_STLP_END_NAMESPACE
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#if defined (_STLP_EXPOSE_STREAM_IMPLEMENTATION) && !defined (_STLP_LINK_TIME_INSTANTIATION)
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# include <stl/_time_facets.c>
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# endif
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#endif /* _STLP_INTERNAL_TIME_FACETS_H */
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// Local Variables:
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// mode:C++
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// End:
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