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gcc/libstdc++-v3/include/bits/locale_facets_nonio.h
Jonathan Wakely 94a9600ce3 locale_facets_nonio.h (time_get::get_time): Doc typo. 
2010-10-05  Jonathan Wakely  <jwakely.gcc@gmail.com>

	* include/bits/locale_facets_nonio.h (time_get::get_time): Doc typo.
	(time_get::get_date): Likewise.

From-SVN: r165002
2010-10-05 21:58:59 +01:00

1935 lines
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// Locale support -*- C++ -*-
// Copyright (C) 2007, 2008, 2009, 2010 Free Software Foundation, Inc.
//
// This file is part of the GNU ISO C++ Library. This library is free
// software; you can redistribute it and/or modify it under the
// terms of the GNU General Public License as published by the
// Free Software Foundation; either version 3, or (at your option)
// any later version.
// This library is distributed in the hope that it will be useful,
// but WITHOUT ANY WARRANTY; without even the implied warranty of
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
// GNU General Public License for more details.
// Under Section 7 of GPL version 3, you are granted additional
// permissions described in the GCC Runtime Library Exception, version
// 3.1, as published by the Free Software Foundation.
// You should have received a copy of the GNU General Public License and
// a copy of the GCC Runtime Library Exception along with this program;
// see the files COPYING3 and COPYING.RUNTIME respectively. If not, see
// <http://www.gnu.org/licenses/>.
/** @file locale_facets_nonio.h
* This is an internal header file, included by other library headers.
* You should not attempt to use it directly.
*/
//
// ISO C++ 14882: 22.1 Locales
//
#ifndef _LOCALE_FACETS_NONIO_H
#define _LOCALE_FACETS_NONIO_H 1
#pragma GCC system_header
#include <ctime> // For struct tm
_GLIBCXX_BEGIN_NAMESPACE(std)
/**
* @brief Time format ordering data.
* @ingroup locales
*
* This class provides an enum representing different orderings of
* time: day, month, and year.
*/
class time_base
{
public:
enum dateorder { no_order, dmy, mdy, ymd, ydm };
};
template<typename _CharT>
struct __timepunct_cache : public locale::facet
{
// List of all known timezones, with GMT first.
static const _CharT* _S_timezones[14];
const _CharT* _M_date_format;
const _CharT* _M_date_era_format;
const _CharT* _M_time_format;
const _CharT* _M_time_era_format;
const _CharT* _M_date_time_format;
const _CharT* _M_date_time_era_format;
const _CharT* _M_am;
const _CharT* _M_pm;
const _CharT* _M_am_pm_format;
// Day names, starting with "C"'s Sunday.
const _CharT* _M_day1;
const _CharT* _M_day2;
const _CharT* _M_day3;
const _CharT* _M_day4;
const _CharT* _M_day5;
const _CharT* _M_day6;
const _CharT* _M_day7;
// Abbreviated day names, starting with "C"'s Sun.
const _CharT* _M_aday1;
const _CharT* _M_aday2;
const _CharT* _M_aday3;
const _CharT* _M_aday4;
const _CharT* _M_aday5;
const _CharT* _M_aday6;
const _CharT* _M_aday7;
// Month names, starting with "C"'s January.
const _CharT* _M_month01;
const _CharT* _M_month02;
const _CharT* _M_month03;
const _CharT* _M_month04;
const _CharT* _M_month05;
const _CharT* _M_month06;
const _CharT* _M_month07;
const _CharT* _M_month08;
const _CharT* _M_month09;
const _CharT* _M_month10;
const _CharT* _M_month11;
const _CharT* _M_month12;
// Abbreviated month names, starting with "C"'s Jan.
const _CharT* _M_amonth01;
const _CharT* _M_amonth02;
const _CharT* _M_amonth03;
const _CharT* _M_amonth04;
const _CharT* _M_amonth05;
const _CharT* _M_amonth06;
const _CharT* _M_amonth07;
const _CharT* _M_amonth08;
const _CharT* _M_amonth09;
const _CharT* _M_amonth10;
const _CharT* _M_amonth11;
const _CharT* _M_amonth12;
bool _M_allocated;
__timepunct_cache(size_t __refs = 0) : facet(__refs),
_M_date_format(0), _M_date_era_format(0), _M_time_format(0),
_M_time_era_format(0), _M_date_time_format(0),
_M_date_time_era_format(0), _M_am(0), _M_pm(0),
_M_am_pm_format(0), _M_day1(0), _M_day2(0), _M_day3(0),
_M_day4(0), _M_day5(0), _M_day6(0), _M_day7(0),
_M_aday1(0), _M_aday2(0), _M_aday3(0), _M_aday4(0),
_M_aday5(0), _M_aday6(0), _M_aday7(0), _M_month01(0),
_M_month02(0), _M_month03(0), _M_month04(0), _M_month05(0),
_M_month06(0), _M_month07(0), _M_month08(0), _M_month09(0),
_M_month10(0), _M_month11(0), _M_month12(0), _M_amonth01(0),
_M_amonth02(0), _M_amonth03(0), _M_amonth04(0),
_M_amonth05(0), _M_amonth06(0), _M_amonth07(0),
_M_amonth08(0), _M_amonth09(0), _M_amonth10(0),
_M_amonth11(0), _M_amonth12(0), _M_allocated(false)
{ }
~__timepunct_cache();
void
_M_cache(const locale& __loc);
private:
__timepunct_cache&
operator=(const __timepunct_cache&);
explicit
__timepunct_cache(const __timepunct_cache&);
};
template<typename _CharT>
__timepunct_cache<_CharT>::~__timepunct_cache()
{
if (_M_allocated)
{
// Unused.
}
}
// Specializations.
template<>
const char*
__timepunct_cache<char>::_S_timezones[14];
#ifdef _GLIBCXX_USE_WCHAR_T
template<>
const wchar_t*
__timepunct_cache<wchar_t>::_S_timezones[14];
#endif
// Generic.
template<typename _CharT>
const _CharT* __timepunct_cache<_CharT>::_S_timezones[14];
template<typename _CharT>
class __timepunct : public locale::facet
{
public:
// Types:
typedef _CharT __char_type;
typedef basic_string<_CharT> __string_type;
typedef __timepunct_cache<_CharT> __cache_type;
protected:
__cache_type* _M_data;
__c_locale _M_c_locale_timepunct;
const char* _M_name_timepunct;
public:
/// Numpunct facet id.
static locale::id id;
explicit
__timepunct(size_t __refs = 0);
explicit
__timepunct(__cache_type* __cache, size_t __refs = 0);
/**
* @brief Internal constructor. Not for general use.
*
* This is a constructor for use by the library itself to set up new
* locales.
*
* @param cloc The C locale.
* @param s The name of a locale.
* @param refs Passed to the base facet class.
*/
explicit
__timepunct(__c_locale __cloc, const char* __s, size_t __refs = 0);
// FIXME: for error checking purposes _M_put should return the return
// value of strftime/wcsftime.
void
_M_put(_CharT* __s, size_t __maxlen, const _CharT* __format,
const tm* __tm) const throw ();
void
_M_date_formats(const _CharT** __date) const
{
// Always have default first.
__date[0] = _M_data->_M_date_format;
__date[1] = _M_data->_M_date_era_format;
}
void
_M_time_formats(const _CharT** __time) const
{
// Always have default first.
__time[0] = _M_data->_M_time_format;
__time[1] = _M_data->_M_time_era_format;
}
void
_M_date_time_formats(const _CharT** __dt) const
{
// Always have default first.
__dt[0] = _M_data->_M_date_time_format;
__dt[1] = _M_data->_M_date_time_era_format;
}
void
_M_am_pm_format(const _CharT* __ampm) const
{ __ampm = _M_data->_M_am_pm_format; }
void
_M_am_pm(const _CharT** __ampm) const
{
__ampm[0] = _M_data->_M_am;
__ampm[1] = _M_data->_M_pm;
}
void
_M_days(const _CharT** __days) const
{
__days[0] = _M_data->_M_day1;
__days[1] = _M_data->_M_day2;
__days[2] = _M_data->_M_day3;
__days[3] = _M_data->_M_day4;
__days[4] = _M_data->_M_day5;
__days[5] = _M_data->_M_day6;
__days[6] = _M_data->_M_day7;
}
void
_M_days_abbreviated(const _CharT** __days) const
{
__days[0] = _M_data->_M_aday1;
__days[1] = _M_data->_M_aday2;
__days[2] = _M_data->_M_aday3;
__days[3] = _M_data->_M_aday4;
__days[4] = _M_data->_M_aday5;
__days[5] = _M_data->_M_aday6;
__days[6] = _M_data->_M_aday7;
}
void
_M_months(const _CharT** __months) const
{
__months[0] = _M_data->_M_month01;
__months[1] = _M_data->_M_month02;
__months[2] = _M_data->_M_month03;
__months[3] = _M_data->_M_month04;
__months[4] = _M_data->_M_month05;
__months[5] = _M_data->_M_month06;
__months[6] = _M_data->_M_month07;
__months[7] = _M_data->_M_month08;
__months[8] = _M_data->_M_month09;
__months[9] = _M_data->_M_month10;
__months[10] = _M_data->_M_month11;
__months[11] = _M_data->_M_month12;
}
void
_M_months_abbreviated(const _CharT** __months) const
{
__months[0] = _M_data->_M_amonth01;
__months[1] = _M_data->_M_amonth02;
__months[2] = _M_data->_M_amonth03;
__months[3] = _M_data->_M_amonth04;
__months[4] = _M_data->_M_amonth05;
__months[5] = _M_data->_M_amonth06;
__months[6] = _M_data->_M_amonth07;
__months[7] = _M_data->_M_amonth08;
__months[8] = _M_data->_M_amonth09;
__months[9] = _M_data->_M_amonth10;
__months[10] = _M_data->_M_amonth11;
__months[11] = _M_data->_M_amonth12;
}
protected:
virtual
~__timepunct();
// For use at construction time only.
void
_M_initialize_timepunct(__c_locale __cloc = 0);
};
template<typename _CharT>
locale::id __timepunct<_CharT>::id;
// Specializations.
template<>
void
__timepunct<char>::_M_initialize_timepunct(__c_locale __cloc);
template<>
void
__timepunct<char>::_M_put(char*, size_t, const char*, const tm*) const throw ();
#ifdef _GLIBCXX_USE_WCHAR_T
template<>
void
__timepunct<wchar_t>::_M_initialize_timepunct(__c_locale __cloc);
template<>
void
__timepunct<wchar_t>::_M_put(wchar_t*, size_t, const wchar_t*,
const tm*) const throw ();
#endif
_GLIBCXX_END_NAMESPACE
// Include host and configuration specific timepunct functions.
#include <bits/time_members.h>
_GLIBCXX_BEGIN_NAMESPACE(std)
/**
* @brief Primary class template time_get.
* @ingroup locales
*
* This facet encapsulates the code to parse and return a date or
* time from a string. It is used by the istream numeric
* extraction operators.
*
* The time_get template uses protected virtual functions to provide the
* actual results. The public accessors forward the call to the virtual
* functions. These virtual functions are hooks for developers to
* implement the behavior they require from the time_get facet.
*/
template<typename _CharT, typename _InIter>
class time_get : public locale::facet, public time_base
{
public:
// Types:
//@{
/// Public typedefs
typedef _CharT char_type;
typedef _InIter iter_type;
//@}
typedef basic_string<_CharT> __string_type;
/// Numpunct facet id.
static locale::id id;
/**
* @brief Constructor performs initialization.
*
* This is the constructor provided by the standard.
*
* @param refs Passed to the base facet class.
*/
explicit
time_get(size_t __refs = 0)
: facet (__refs) { }
/**
* @brief Return preferred order of month, day, and year.
*
* This function returns an enum from timebase::dateorder giving the
* preferred ordering if the format @a x given to time_put::put() only
* uses month, day, and year. If the format @a x for the associated
* locale uses other fields, this function returns
* timebase::dateorder::noorder.
*
* NOTE: The library always returns noorder at the moment.
*
* @return A member of timebase::dateorder.
*/
dateorder
date_order() const
{ return this->do_date_order(); }
/**
* @brief Parse input time string.
*
* This function parses a time according to the format @a X and puts the
* results into a user-supplied struct tm. The result is returned by
* calling time_get::do_get_time().
*
* If there is a valid time string according to format @a X, @a tm will
* be filled in accordingly and the returned iterator will point to the
* first character beyond the time string. If an error occurs before
* the end, err |= ios_base::failbit. If parsing reads all the
* characters, err |= ios_base::eofbit.
*
* @param beg Start of string to parse.
* @param end End of string to parse.
* @param io Source of the locale.
* @param err Error flags to set.
* @param tm Pointer to struct tm to fill in.
* @return Iterator to first char beyond time string.
*/
iter_type
get_time(iter_type __beg, iter_type __end, ios_base& __io,
ios_base::iostate& __err, tm* __tm) const
{ return this->do_get_time(__beg, __end, __io, __err, __tm); }
/**
* @brief Parse input date string.
*
* This function parses a date according to the format @a x and puts the
* results into a user-supplied struct tm. The result is returned by
* calling time_get::do_get_date().
*
* If there is a valid date string according to format @a x, @a tm will
* be filled in accordingly and the returned iterator will point to the
* first character beyond the date string. If an error occurs before
* the end, err |= ios_base::failbit. If parsing reads all the
* characters, err |= ios_base::eofbit.
*
* @param beg Start of string to parse.
* @param end End of string to parse.
* @param io Source of the locale.
* @param err Error flags to set.
* @param tm Pointer to struct tm to fill in.
* @return Iterator to first char beyond date string.
*/
iter_type
get_date(iter_type __beg, iter_type __end, ios_base& __io,
ios_base::iostate& __err, tm* __tm) const
{ return this->do_get_date(__beg, __end, __io, __err, __tm); }
/**
* @brief Parse input weekday string.
*
* This function parses a weekday name and puts the results into a
* user-supplied struct tm. The result is returned by calling
* time_get::do_get_weekday().
*
* Parsing starts by parsing an abbreviated weekday name. If a valid
* abbreviation is followed by a character that would lead to the full
* weekday name, parsing continues until the full name is found or an
* error occurs. Otherwise parsing finishes at the end of the
* abbreviated name.
*
* If an error occurs before the end, err |= ios_base::failbit. If
* parsing reads all the characters, err |= ios_base::eofbit.
*
* @param beg Start of string to parse.
* @param end End of string to parse.
* @param io Source of the locale.
* @param err Error flags to set.
* @param tm Pointer to struct tm to fill in.
* @return Iterator to first char beyond weekday name.
*/
iter_type
get_weekday(iter_type __beg, iter_type __end, ios_base& __io,
ios_base::iostate& __err, tm* __tm) const
{ return this->do_get_weekday(__beg, __end, __io, __err, __tm); }
/**
* @brief Parse input month string.
*
* This function parses a month name and puts the results into a
* user-supplied struct tm. The result is returned by calling
* time_get::do_get_monthname().
*
* Parsing starts by parsing an abbreviated month name. If a valid
* abbreviation is followed by a character that would lead to the full
* month name, parsing continues until the full name is found or an
* error occurs. Otherwise parsing finishes at the end of the
* abbreviated name.
*
* If an error occurs before the end, err |= ios_base::failbit. If
* parsing reads all the characters, err |=
* ios_base::eofbit.
*
* @param beg Start of string to parse.
* @param end End of string to parse.
* @param io Source of the locale.
* @param err Error flags to set.
* @param tm Pointer to struct tm to fill in.
* @return Iterator to first char beyond month name.
*/
iter_type
get_monthname(iter_type __beg, iter_type __end, ios_base& __io,
ios_base::iostate& __err, tm* __tm) const
{ return this->do_get_monthname(__beg, __end, __io, __err, __tm); }
/**
* @brief Parse input year string.
*
* This function reads up to 4 characters to parse a year string and
* puts the results into a user-supplied struct tm. The result is
* returned by calling time_get::do_get_year().
*
* 4 consecutive digits are interpreted as a full year. If there are
* exactly 2 consecutive digits, the library interprets this as the
* number of years since 1900.
*
* If an error occurs before the end, err |= ios_base::failbit. If
* parsing reads all the characters, err |= ios_base::eofbit.
*
* @param beg Start of string to parse.
* @param end End of string to parse.
* @param io Source of the locale.
* @param err Error flags to set.
* @param tm Pointer to struct tm to fill in.
* @return Iterator to first char beyond year.
*/
iter_type
get_year(iter_type __beg, iter_type __end, ios_base& __io,
ios_base::iostate& __err, tm* __tm) const
{ return this->do_get_year(__beg, __end, __io, __err, __tm); }
protected:
/// Destructor.
virtual
~time_get() { }
/**
* @brief Return preferred order of month, day, and year.
*
* This function returns an enum from timebase::dateorder giving the
* preferred ordering if the format @a x given to time_put::put() only
* uses month, day, and year. This function is a hook for derived
* classes to change the value returned.
*
* @return A member of timebase::dateorder.
*/
virtual dateorder
do_date_order() const;
/**
* @brief Parse input time string.
*
* This function parses a time according to the format @a x and puts the
* results into a user-supplied struct tm. This function is a hook for
* derived classes to change the value returned. @see get_time() for
* details.
*
* @param beg Start of string to parse.
* @param end End of string to parse.
* @param io Source of the locale.
* @param err Error flags to set.
* @param tm Pointer to struct tm to fill in.
* @return Iterator to first char beyond time string.
*/
virtual iter_type
do_get_time(iter_type __beg, iter_type __end, ios_base& __io,
ios_base::iostate& __err, tm* __tm) const;
/**
* @brief Parse input date string.
*
* This function parses a date according to the format @a X and puts the
* results into a user-supplied struct tm. This function is a hook for
* derived classes to change the value returned. @see get_date() for
* details.
*
* @param beg Start of string to parse.
* @param end End of string to parse.
* @param io Source of the locale.
* @param err Error flags to set.
* @param tm Pointer to struct tm to fill in.
* @return Iterator to first char beyond date string.
*/
virtual iter_type
do_get_date(iter_type __beg, iter_type __end, ios_base& __io,
ios_base::iostate& __err, tm* __tm) const;
/**
* @brief Parse input weekday string.
*
* This function parses a weekday name and puts the results into a
* user-supplied struct tm. This function is a hook for derived
* classes to change the value returned. @see get_weekday() for
* details.
*
* @param beg Start of string to parse.
* @param end End of string to parse.
* @param io Source of the locale.
* @param err Error flags to set.
* @param tm Pointer to struct tm to fill in.
* @return Iterator to first char beyond weekday name.
*/
virtual iter_type
do_get_weekday(iter_type __beg, iter_type __end, ios_base&,
ios_base::iostate& __err, tm* __tm) const;
/**
* @brief Parse input month string.
*
* This function parses a month name and puts the results into a
* user-supplied struct tm. This function is a hook for derived
* classes to change the value returned. @see get_monthname() for
* details.
*
* @param beg Start of string to parse.
* @param end End of string to parse.
* @param io Source of the locale.
* @param err Error flags to set.
* @param tm Pointer to struct tm to fill in.
* @return Iterator to first char beyond month name.
*/
virtual iter_type
do_get_monthname(iter_type __beg, iter_type __end, ios_base&,
ios_base::iostate& __err, tm* __tm) const;
/**
* @brief Parse input year string.
*
* This function reads up to 4 characters to parse a year string and
* puts the results into a user-supplied struct tm. This function is a
* hook for derived classes to change the value returned. @see
* get_year() for details.
*
* @param beg Start of string to parse.
* @param end End of string to parse.
* @param io Source of the locale.
* @param err Error flags to set.
* @param tm Pointer to struct tm to fill in.
* @return Iterator to first char beyond year.
*/
virtual iter_type
do_get_year(iter_type __beg, iter_type __end, ios_base& __io,
ios_base::iostate& __err, tm* __tm) const;
// Extract numeric component of length __len.
iter_type
_M_extract_num(iter_type __beg, iter_type __end, int& __member,
int __min, int __max, size_t __len,
ios_base& __io, ios_base::iostate& __err) const;
// Extract any unique array of string literals in a const _CharT* array.
iter_type
_M_extract_name(iter_type __beg, iter_type __end, int& __member,
const _CharT** __names, size_t __indexlen,
ios_base& __io, ios_base::iostate& __err) const;
// Extract day or month name in a const _CharT* array.
iter_type
_M_extract_wday_or_month(iter_type __beg, iter_type __end, int& __member,
const _CharT** __names, size_t __indexlen,
ios_base& __io, ios_base::iostate& __err) const;
// Extract on a component-by-component basis, via __format argument.
iter_type
_M_extract_via_format(iter_type __beg, iter_type __end, ios_base& __io,
ios_base::iostate& __err, tm* __tm,
const _CharT* __format) const;
};
template<typename _CharT, typename _InIter>
locale::id time_get<_CharT, _InIter>::id;
/// class time_get_byname [22.2.5.2].
template<typename _CharT, typename _InIter>
class time_get_byname : public time_get<_CharT, _InIter>
{
public:
// Types:
typedef _CharT char_type;
typedef _InIter iter_type;
explicit
time_get_byname(const char*, size_t __refs = 0)
: time_get<_CharT, _InIter>(__refs) { }
protected:
virtual
~time_get_byname() { }
};
/**
* @brief Primary class template time_put.
* @ingroup locales
*
* This facet encapsulates the code to format and output dates and times
* according to formats used by strftime().
*
* The time_put template uses protected virtual functions to provide the
* actual results. The public accessors forward the call to the virtual
* functions. These virtual functions are hooks for developers to
* implement the behavior they require from the time_put facet.
*/
template<typename _CharT, typename _OutIter>
class time_put : public locale::facet
{
public:
// Types:
//@{
/// Public typedefs
typedef _CharT char_type;
typedef _OutIter iter_type;
//@}
/// Numpunct facet id.
static locale::id id;
/**
* @brief Constructor performs initialization.
*
* This is the constructor provided by the standard.
*
* @param refs Passed to the base facet class.
*/
explicit
time_put(size_t __refs = 0)
: facet(__refs) { }
/**
* @brief Format and output a time or date.
*
* This function formats the data in struct tm according to the
* provided format string. The format string is interpreted as by
* strftime().
*
* @param s The stream to write to.
* @param io Source of locale.
* @param fill char_type to use for padding.
* @param tm Struct tm with date and time info to format.
* @param beg Start of format string.
* @param end End of format string.
* @return Iterator after writing.
*/
iter_type
put(iter_type __s, ios_base& __io, char_type __fill, const tm* __tm,
const _CharT* __beg, const _CharT* __end) const;
/**
* @brief Format and output a time or date.
*
* This function formats the data in struct tm according to the
* provided format char and optional modifier. The format and modifier
* are interpreted as by strftime(). It does so by returning
* time_put::do_put().
*
* @param s The stream to write to.
* @param io Source of locale.
* @param fill char_type to use for padding.
* @param tm Struct tm with date and time info to format.
* @param format Format char.
* @param mod Optional modifier char.
* @return Iterator after writing.
*/
iter_type
put(iter_type __s, ios_base& __io, char_type __fill,
const tm* __tm, char __format, char __mod = 0) const
{ return this->do_put(__s, __io, __fill, __tm, __format, __mod); }
protected:
/// Destructor.
virtual
~time_put()
{ }
/**
* @brief Format and output a time or date.
*
* This function formats the data in struct tm according to the
* provided format char and optional modifier. This function is a hook
* for derived classes to change the value returned. @see put() for
* more details.
*
* @param s The stream to write to.
* @param io Source of locale.
* @param fill char_type to use for padding.
* @param tm Struct tm with date and time info to format.
* @param format Format char.
* @param mod Optional modifier char.
* @return Iterator after writing.
*/
virtual iter_type
do_put(iter_type __s, ios_base& __io, char_type __fill, const tm* __tm,
char __format, char __mod) const;
};
template<typename _CharT, typename _OutIter>
locale::id time_put<_CharT, _OutIter>::id;
/// class time_put_byname [22.2.5.4].
template<typename _CharT, typename _OutIter>
class time_put_byname : public time_put<_CharT, _OutIter>
{
public:
// Types:
typedef _CharT char_type;
typedef _OutIter iter_type;
explicit
time_put_byname(const char*, size_t __refs = 0)
: time_put<_CharT, _OutIter>(__refs)
{ };
protected:
virtual
~time_put_byname() { }
};
/**
* @brief Money format ordering data.
* @ingroup locales
*
* This class contains an ordered array of 4 fields to represent the
* pattern for formatting a money amount. Each field may contain one entry
* from the part enum. symbol, sign, and value must be present and the
* remaining field must contain either none or space. @see
* moneypunct::pos_format() and moneypunct::neg_format() for details of how
* these fields are interpreted.
*/
class money_base
{
public:
enum part { none, space, symbol, sign, value };
struct pattern { char field[4]; };
static const pattern _S_default_pattern;
enum
{
_S_minus,
_S_zero,
_S_end = 11
};
// String literal of acceptable (narrow) input/output, for
// money_get/money_put. "-0123456789"
static const char* _S_atoms;
// Construct and return valid pattern consisting of some combination of:
// space none symbol sign value
_GLIBCXX_CONST static pattern
_S_construct_pattern(char __precedes, char __space, char __posn) throw ();
};
template<typename _CharT, bool _Intl>
struct __moneypunct_cache : public locale::facet
{
const char* _M_grouping;
size_t _M_grouping_size;
bool _M_use_grouping;
_CharT _M_decimal_point;
_CharT _M_thousands_sep;
const _CharT* _M_curr_symbol;
size_t _M_curr_symbol_size;
const _CharT* _M_positive_sign;
size_t _M_positive_sign_size;
const _CharT* _M_negative_sign;
size_t _M_negative_sign_size;
int _M_frac_digits;
money_base::pattern _M_pos_format;
money_base::pattern _M_neg_format;
// A list of valid numeric literals for input and output: in the standard
// "C" locale, this is "-0123456789". This array contains the chars after
// having been passed through the current locale's ctype<_CharT>.widen().
_CharT _M_atoms[money_base::_S_end];
bool _M_allocated;
__moneypunct_cache(size_t __refs = 0) : facet(__refs),
_M_grouping(0), _M_grouping_size(0), _M_use_grouping(false),
_M_decimal_point(_CharT()), _M_thousands_sep(_CharT()),
_M_curr_symbol(0), _M_curr_symbol_size(0),
_M_positive_sign(0), _M_positive_sign_size(0),
_M_negative_sign(0), _M_negative_sign_size(0),
_M_frac_digits(0),
_M_pos_format(money_base::pattern()),
_M_neg_format(money_base::pattern()), _M_allocated(false)
{ }
~__moneypunct_cache();
void
_M_cache(const locale& __loc);
private:
__moneypunct_cache&
operator=(const __moneypunct_cache&);
explicit
__moneypunct_cache(const __moneypunct_cache&);
};
template<typename _CharT, bool _Intl>
__moneypunct_cache<_CharT, _Intl>::~__moneypunct_cache()
{
if (_M_allocated)
{
delete [] _M_grouping;
delete [] _M_curr_symbol;
delete [] _M_positive_sign;
delete [] _M_negative_sign;
}
}
/**
* @brief Primary class template moneypunct.
* @ingroup locales
*
* This facet encapsulates the punctuation, grouping and other formatting
* features of money amount string representations.
*/
template<typename _CharT, bool _Intl>
class moneypunct : public locale::facet, public money_base
{
public:
// Types:
//@{
/// Public typedefs
typedef _CharT char_type;
typedef basic_string<_CharT> string_type;
//@}
typedef __moneypunct_cache<_CharT, _Intl> __cache_type;
private:
__cache_type* _M_data;
public:
/// This value is provided by the standard, but no reason for its
/// existence.
static const bool intl = _Intl;
/// Numpunct facet id.
static locale::id id;
/**
* @brief Constructor performs initialization.
*
* This is the constructor provided by the standard.
*
* @param refs Passed to the base facet class.
*/
explicit
moneypunct(size_t __refs = 0)
: facet(__refs), _M_data(0)
{ _M_initialize_moneypunct(); }
/**
* @brief Constructor performs initialization.
*
* This is an internal constructor.
*
* @param cache Cache for optimization.
* @param refs Passed to the base facet class.
*/
explicit
moneypunct(__cache_type* __cache, size_t __refs = 0)
: facet(__refs), _M_data(__cache)
{ _M_initialize_moneypunct(); }
/**
* @brief Internal constructor. Not for general use.
*
* This is a constructor for use by the library itself to set up new
* locales.
*
* @param cloc The C locale.
* @param s The name of a locale.
* @param refs Passed to the base facet class.
*/
explicit
moneypunct(__c_locale __cloc, const char* __s, size_t __refs = 0)
: facet(__refs), _M_data(0)
{ _M_initialize_moneypunct(__cloc, __s); }
/**
* @brief Return decimal point character.
*
* This function returns a char_type to use as a decimal point. It
* does so by returning returning
* moneypunct<char_type>::do_decimal_point().
*
* @return @a char_type representing a decimal point.
*/
char_type
decimal_point() const
{ return this->do_decimal_point(); }
/**
* @brief Return thousands separator character.
*
* This function returns a char_type to use as a thousands
* separator. It does so by returning returning
* moneypunct<char_type>::do_thousands_sep().
*
* @return char_type representing a thousands separator.
*/
char_type
thousands_sep() const
{ return this->do_thousands_sep(); }
/**
* @brief Return grouping specification.
*
* This function returns a string representing groupings for the
* integer part of an amount. Groupings indicate where thousands
* separators should be inserted.
*
* Each char in the return string is interpret as an integer rather
* than a character. These numbers represent the number of digits in a
* group. The first char in the string represents the number of digits
* in the least significant group. If a char is negative, it indicates
* an unlimited number of digits for the group. If more chars from the
* string are required to group a number, the last char is used
* repeatedly.
*
* For example, if the grouping() returns <code>\003\002</code>
* and is applied to the number 123456789, this corresponds to
* 12,34,56,789. Note that if the string was <code>32</code>, this would
* put more than 50 digits into the least significant group if
* the character set is ASCII.
*
* The string is returned by calling
* moneypunct<char_type>::do_grouping().
*
* @return string representing grouping specification.
*/
string
grouping() const
{ return this->do_grouping(); }
/**
* @brief Return currency symbol string.
*
* This function returns a string_type to use as a currency symbol. It
* does so by returning returning
* moneypunct<char_type>::do_curr_symbol().
*
* @return @a string_type representing a currency symbol.
*/
string_type
curr_symbol() const
{ return this->do_curr_symbol(); }
/**
* @brief Return positive sign string.
*
* This function returns a string_type to use as a sign for positive
* amounts. It does so by returning returning
* moneypunct<char_type>::do_positive_sign().
*
* If the return value contains more than one character, the first
* character appears in the position indicated by pos_format() and the
* remainder appear at the end of the formatted string.
*
* @return @a string_type representing a positive sign.
*/
string_type
positive_sign() const
{ return this->do_positive_sign(); }
/**
* @brief Return negative sign string.
*
* This function returns a string_type to use as a sign for negative
* amounts. It does so by returning returning
* moneypunct<char_type>::do_negative_sign().
*
* If the return value contains more than one character, the first
* character appears in the position indicated by neg_format() and the
* remainder appear at the end of the formatted string.
*
* @return @a string_type representing a negative sign.
*/
string_type
negative_sign() const
{ return this->do_negative_sign(); }
/**
* @brief Return number of digits in fraction.
*
* This function returns the exact number of digits that make up the
* fractional part of a money amount. It does so by returning
* returning moneypunct<char_type>::do_frac_digits().
*
* The fractional part of a money amount is optional. But if it is
* present, there must be frac_digits() digits.
*
* @return Number of digits in amount fraction.
*/
int
frac_digits() const
{ return this->do_frac_digits(); }
//@{
/**
* @brief Return pattern for money values.
*
* This function returns a pattern describing the formatting of a
* positive or negative valued money amount. It does so by returning
* returning moneypunct<char_type>::do_pos_format() or
* moneypunct<char_type>::do_neg_format().
*
* The pattern has 4 fields describing the ordering of symbol, sign,
* value, and none or space. There must be one of each in the pattern.
* The none and space enums may not appear in the first field and space
* may not appear in the final field.
*
* The parts of a money string must appear in the order indicated by
* the fields of the pattern. The symbol field indicates that the
* value of curr_symbol() may be present. The sign field indicates
* that the value of positive_sign() or negative_sign() must be
* present. The value field indicates that the absolute value of the
* money amount is present. none indicates 0 or more whitespace
* characters, except at the end, where it permits no whitespace.
* space indicates that 1 or more whitespace characters must be
* present.
*
* For example, for the US locale and pos_format() pattern
* {symbol,sign,value,none}, curr_symbol() == &apos;$&apos;
* positive_sign() == &apos;+&apos;, and value 10.01, and
* options set to force the symbol, the corresponding string is
* <code>$+10.01</code>.
*
* @return Pattern for money values.
*/
pattern
pos_format() const
{ return this->do_pos_format(); }
pattern
neg_format() const
{ return this->do_neg_format(); }
//@}
protected:
/// Destructor.
virtual
~moneypunct();
/**
* @brief Return decimal point character.
*
* Returns a char_type to use as a decimal point. This function is a
* hook for derived classes to change the value returned.
*
* @return @a char_type representing a decimal point.
*/
virtual char_type
do_decimal_point() const
{ return _M_data->_M_decimal_point; }
/**
* @brief Return thousands separator character.
*
* Returns a char_type to use as a thousands separator. This function
* is a hook for derived classes to change the value returned.
*
* @return @a char_type representing a thousands separator.
*/
virtual char_type
do_thousands_sep() const
{ return _M_data->_M_thousands_sep; }
/**
* @brief Return grouping specification.
*
* Returns a string representing groupings for the integer part of a
* number. This function is a hook for derived classes to change the
* value returned. @see grouping() for details.
*
* @return String representing grouping specification.
*/
virtual string
do_grouping() const
{ return _M_data->_M_grouping; }
/**
* @brief Return currency symbol string.
*
* This function returns a string_type to use as a currency symbol.
* This function is a hook for derived classes to change the value
* returned. @see curr_symbol() for details.
*
* @return @a string_type representing a currency symbol.
*/
virtual string_type
do_curr_symbol() const
{ return _M_data->_M_curr_symbol; }
/**
* @brief Return positive sign string.
*
* This function returns a string_type to use as a sign for positive
* amounts. This function is a hook for derived classes to change the
* value returned. @see positive_sign() for details.
*
* @return @a string_type representing a positive sign.
*/
virtual string_type
do_positive_sign() const
{ return _M_data->_M_positive_sign; }
/**
* @brief Return negative sign string.
*
* This function returns a string_type to use as a sign for negative
* amounts. This function is a hook for derived classes to change the
* value returned. @see negative_sign() for details.
*
* @return @a string_type representing a negative sign.
*/
virtual string_type
do_negative_sign() const
{ return _M_data->_M_negative_sign; }
/**
* @brief Return number of digits in fraction.
*
* This function returns the exact number of digits that make up the
* fractional part of a money amount. This function is a hook for
* derived classes to change the value returned. @see frac_digits()
* for details.
*
* @return Number of digits in amount fraction.
*/
virtual int
do_frac_digits() const
{ return _M_data->_M_frac_digits; }
/**
* @brief Return pattern for money values.
*
* This function returns a pattern describing the formatting of a
* positive valued money amount. This function is a hook for derived
* classes to change the value returned. @see pos_format() for
* details.
*
* @return Pattern for money values.
*/
virtual pattern
do_pos_format() const
{ return _M_data->_M_pos_format; }
/**
* @brief Return pattern for money values.
*
* This function returns a pattern describing the formatting of a
* negative valued money amount. This function is a hook for derived
* classes to change the value returned. @see neg_format() for
* details.
*
* @return Pattern for money values.
*/
virtual pattern
do_neg_format() const
{ return _M_data->_M_neg_format; }
// For use at construction time only.
void
_M_initialize_moneypunct(__c_locale __cloc = 0,
const char* __name = 0);
};
template<typename _CharT, bool _Intl>
locale::id moneypunct<_CharT, _Intl>::id;
template<typename _CharT, bool _Intl>
const bool moneypunct<_CharT, _Intl>::intl;
template<>
moneypunct<char, true>::~moneypunct();
template<>
moneypunct<char, false>::~moneypunct();
template<>
void
moneypunct<char, true>::_M_initialize_moneypunct(__c_locale, const char*);
template<>
void
moneypunct<char, false>::_M_initialize_moneypunct(__c_locale, const char*);
#ifdef _GLIBCXX_USE_WCHAR_T
template<>
moneypunct<wchar_t, true>::~moneypunct();
template<>
moneypunct<wchar_t, false>::~moneypunct();
template<>
void
moneypunct<wchar_t, true>::_M_initialize_moneypunct(__c_locale,
const char*);
template<>
void
moneypunct<wchar_t, false>::_M_initialize_moneypunct(__c_locale,
const char*);
#endif
/// class moneypunct_byname [22.2.6.4].
template<typename _CharT, bool _Intl>
class moneypunct_byname : public moneypunct<_CharT, _Intl>
{
public:
typedef _CharT char_type;
typedef basic_string<_CharT> string_type;
static const bool intl = _Intl;
explicit
moneypunct_byname(const char* __s, size_t __refs = 0)
: moneypunct<_CharT, _Intl>(__refs)
{
if (__builtin_strcmp(__s, "C") != 0
&& __builtin_strcmp(__s, "POSIX") != 0)
{
__c_locale __tmp;
this->_S_create_c_locale(__tmp, __s);
this->_M_initialize_moneypunct(__tmp);
this->_S_destroy_c_locale(__tmp);
}
}
protected:
virtual
~moneypunct_byname() { }
};
template<typename _CharT, bool _Intl>
const bool moneypunct_byname<_CharT, _Intl>::intl;
_GLIBCXX_BEGIN_LDBL_NAMESPACE
/**
* @brief Primary class template money_get.
* @ingroup locales
*
* This facet encapsulates the code to parse and return a monetary
* amount from a string.
*
* The money_get template uses protected virtual functions to
* provide the actual results. The public accessors forward the
* call to the virtual functions. These virtual functions are
* hooks for developers to implement the behavior they require from
* the money_get facet.
*/
template<typename _CharT, typename _InIter>
class money_get : public locale::facet
{
public:
// Types:
//@{
/// Public typedefs
typedef _CharT char_type;
typedef _InIter iter_type;
typedef basic_string<_CharT> string_type;
//@}
/// Numpunct facet id.
static locale::id id;
/**
* @brief Constructor performs initialization.
*
* This is the constructor provided by the standard.
*
* @param refs Passed to the base facet class.
*/
explicit
money_get(size_t __refs = 0) : facet(__refs) { }
/**
* @brief Read and parse a monetary value.
*
* This function reads characters from @a s, interprets them as a
* monetary value according to moneypunct and ctype facets retrieved
* from io.getloc(), and returns the result in @a units as an integral
* value moneypunct::frac_digits() * the actual amount. For example,
* the string $10.01 in a US locale would store 1001 in @a units.
*
* Any characters not part of a valid money amount are not consumed.
*
* If a money value cannot be parsed from the input stream, sets
* err=(err|io.failbit). If the stream is consumed before finishing
* parsing, sets err=(err|io.failbit|io.eofbit). @a units is
* unchanged if parsing fails.
*
* This function works by returning the result of do_get().
*
* @param s Start of characters to parse.
* @param end End of characters to parse.
* @param intl Parameter to use_facet<moneypunct<CharT,intl> >.
* @param io Source of facets and io state.
* @param err Error field to set if parsing fails.
* @param units Place to store result of parsing.
* @return Iterator referencing first character beyond valid money
* amount.
*/
iter_type
get(iter_type __s, iter_type __end, bool __intl, ios_base& __io,
ios_base::iostate& __err, long double& __units) const
{ return this->do_get(__s, __end, __intl, __io, __err, __units); }
/**
* @brief Read and parse a monetary value.
*
* This function reads characters from @a s, interprets them as
* a monetary value according to moneypunct and ctype facets
* retrieved from io.getloc(), and returns the result in @a
* digits. For example, the string $10.01 in a US locale would
* store <code>1001</code> in @a digits.
*
* Any characters not part of a valid money amount are not consumed.
*
* If a money value cannot be parsed from the input stream, sets
* err=(err|io.failbit). If the stream is consumed before finishing
* parsing, sets err=(err|io.failbit|io.eofbit).
*
* This function works by returning the result of do_get().
*
* @param s Start of characters to parse.
* @param end End of characters to parse.
* @param intl Parameter to use_facet<moneypunct<CharT,intl> >.
* @param io Source of facets and io state.
* @param err Error field to set if parsing fails.
* @param digits Place to store result of parsing.
* @return Iterator referencing first character beyond valid money
* amount.
*/
iter_type
get(iter_type __s, iter_type __end, bool __intl, ios_base& __io,
ios_base::iostate& __err, string_type& __digits) const
{ return this->do_get(__s, __end, __intl, __io, __err, __digits); }
protected:
/// Destructor.
virtual
~money_get() { }
/**
* @brief Read and parse a monetary value.
*
* This function reads and parses characters representing a monetary
* value. This function is a hook for derived classes to change the
* value returned. @see get() for details.
*/
// XXX GLIBCXX_ABI Deprecated
#if defined _GLIBCXX_LONG_DOUBLE_COMPAT && defined __LONG_DOUBLE_128__
virtual iter_type
__do_get(iter_type __s, iter_type __end, bool __intl, ios_base& __io,
ios_base::iostate& __err, double& __units) const;
#else
virtual iter_type
do_get(iter_type __s, iter_type __end, bool __intl, ios_base& __io,
ios_base::iostate& __err, long double& __units) const;
#endif
/**
* @brief Read and parse a monetary value.
*
* This function reads and parses characters representing a monetary
* value. This function is a hook for derived classes to change the
* value returned. @see get() for details.
*/
virtual iter_type
do_get(iter_type __s, iter_type __end, bool __intl, ios_base& __io,
ios_base::iostate& __err, string_type& __digits) const;
// XXX GLIBCXX_ABI Deprecated
#if defined _GLIBCXX_LONG_DOUBLE_COMPAT && defined __LONG_DOUBLE_128__
virtual iter_type
do_get(iter_type __s, iter_type __end, bool __intl, ios_base& __io,
ios_base::iostate& __err, long double& __units) const;
#endif
template<bool _Intl>
iter_type
_M_extract(iter_type __s, iter_type __end, ios_base& __io,
ios_base::iostate& __err, string& __digits) const;
};
template<typename _CharT, typename _InIter>
locale::id money_get<_CharT, _InIter>::id;
/**
* @brief Primary class template money_put.
* @ingroup locales
*
* This facet encapsulates the code to format and output a monetary
* amount.
*
* The money_put template uses protected virtual functions to
* provide the actual results. The public accessors forward the
* call to the virtual functions. These virtual functions are
* hooks for developers to implement the behavior they require from
* the money_put facet.
*/
template<typename _CharT, typename _OutIter>
class money_put : public locale::facet
{
public:
//@{
/// Public typedefs
typedef _CharT char_type;
typedef _OutIter iter_type;
typedef basic_string<_CharT> string_type;
//@}
/// Numpunct facet id.
static locale::id id;
/**
* @brief Constructor performs initialization.
*
* This is the constructor provided by the standard.
*
* @param refs Passed to the base facet class.
*/
explicit
money_put(size_t __refs = 0) : facet(__refs) { }
/**
* @brief Format and output a monetary value.
*
* This function formats @a units as a monetary value according to
* moneypunct and ctype facets retrieved from io.getloc(), and writes
* the resulting characters to @a s. For example, the value 1001 in a
* US locale would write <code>$10.01</code> to @a s.
*
* This function works by returning the result of do_put().
*
* @param s The stream to write to.
* @param intl Parameter to use_facet<moneypunct<CharT,intl> >.
* @param io Source of facets and io state.
* @param fill char_type to use for padding.
* @param units Place to store result of parsing.
* @return Iterator after writing.
*/
iter_type
put(iter_type __s, bool __intl, ios_base& __io,
char_type __fill, long double __units) const
{ return this->do_put(__s, __intl, __io, __fill, __units); }
/**
* @brief Format and output a monetary value.
*
* This function formats @a digits as a monetary value
* according to moneypunct and ctype facets retrieved from
* io.getloc(), and writes the resulting characters to @a s.
* For example, the string <code>1001</code> in a US locale
* would write <code>$10.01</code> to @a s.
*
* This function works by returning the result of do_put().
*
* @param s The stream to write to.
* @param intl Parameter to use_facet<moneypunct<CharT,intl> >.
* @param io Source of facets and io state.
* @param fill char_type to use for padding.
* @param units Place to store result of parsing.
* @return Iterator after writing.
*/
iter_type
put(iter_type __s, bool __intl, ios_base& __io,
char_type __fill, const string_type& __digits) const
{ return this->do_put(__s, __intl, __io, __fill, __digits); }
protected:
/// Destructor.
virtual
~money_put() { }
/**
* @brief Format and output a monetary value.
*
* This function formats @a units as a monetary value according to
* moneypunct and ctype facets retrieved from io.getloc(), and writes
* the resulting characters to @a s. For example, the value 1001 in a
* US locale would write <code>$10.01</code> to @a s.
*
* This function is a hook for derived classes to change the value
* returned. @see put().
*
* @param s The stream to write to.
* @param intl Parameter to use_facet<moneypunct<CharT,intl> >.
* @param io Source of facets and io state.
* @param fill char_type to use for padding.
* @param units Place to store result of parsing.
* @return Iterator after writing.
*/
// XXX GLIBCXX_ABI Deprecated
#if defined _GLIBCXX_LONG_DOUBLE_COMPAT && defined __LONG_DOUBLE_128__
virtual iter_type
__do_put(iter_type __s, bool __intl, ios_base& __io, char_type __fill,
double __units) const;
#else
virtual iter_type
do_put(iter_type __s, bool __intl, ios_base& __io, char_type __fill,
long double __units) const;
#endif
/**
* @brief Format and output a monetary value.
*
* This function formats @a digits as a monetary value
* according to moneypunct and ctype facets retrieved from
* io.getloc(), and writes the resulting characters to @a s.
* For example, the string <code>1001</code> in a US locale
* would write <code>$10.01</code> to @a s.
*
* This function is a hook for derived classes to change the value
* returned. @see put().
*
* @param s The stream to write to.
* @param intl Parameter to use_facet<moneypunct<CharT,intl> >.
* @param io Source of facets and io state.
* @param fill char_type to use for padding.
* @param units Place to store result of parsing.
* @return Iterator after writing.
*/
virtual iter_type
do_put(iter_type __s, bool __intl, ios_base& __io, char_type __fill,
const string_type& __digits) const;
// XXX GLIBCXX_ABI Deprecated
#if defined _GLIBCXX_LONG_DOUBLE_COMPAT && defined __LONG_DOUBLE_128__
virtual iter_type
do_put(iter_type __s, bool __intl, ios_base& __io, char_type __fill,
long double __units) const;
#endif
template<bool _Intl>
iter_type
_M_insert(iter_type __s, ios_base& __io, char_type __fill,
const string_type& __digits) const;
};
template<typename _CharT, typename _OutIter>
locale::id money_put<_CharT, _OutIter>::id;
_GLIBCXX_END_LDBL_NAMESPACE
/**
* @brief Messages facet base class providing catalog typedef.
* @ingroup locales
*/
struct messages_base
{
typedef int catalog;
};
/**
* @brief Primary class template messages.
* @ingroup locales
*
* This facet encapsulates the code to retrieve messages from
* message catalogs. The only thing defined by the standard for this facet
* is the interface. All underlying functionality is
* implementation-defined.
*
* This library currently implements 3 versions of the message facet. The
* first version (gnu) is a wrapper around gettext, provided by libintl.
* The second version (ieee) is a wrapper around catgets. The final
* version (default) does no actual translation. These implementations are
* only provided for char and wchar_t instantiations.
*
* The messages template uses protected virtual functions to
* provide the actual results. The public accessors forward the
* call to the virtual functions. These virtual functions are
* hooks for developers to implement the behavior they require from
* the messages facet.
*/
template<typename _CharT>
class messages : public locale::facet, public messages_base
{
public:
// Types:
//@{
/// Public typedefs
typedef _CharT char_type;
typedef basic_string<_CharT> string_type;
//@}
protected:
// Underlying "C" library locale information saved from
// initialization, needed by messages_byname as well.
__c_locale _M_c_locale_messages;
const char* _M_name_messages;
public:
/// Numpunct facet id.
static locale::id id;
/**
* @brief Constructor performs initialization.
*
* This is the constructor provided by the standard.
*
* @param refs Passed to the base facet class.
*/
explicit
messages(size_t __refs = 0);
// Non-standard.
/**
* @brief Internal constructor. Not for general use.
*
* This is a constructor for use by the library itself to set up new
* locales.
*
* @param cloc The C locale.
* @param s The name of a locale.
* @param refs Refcount to pass to the base class.
*/
explicit
messages(__c_locale __cloc, const char* __s, size_t __refs = 0);
/*
* @brief Open a message catalog.
*
* This function opens and returns a handle to a message catalog by
* returning do_open(s, loc).
*
* @param s The catalog to open.
* @param loc Locale to use for character set conversions.
* @return Handle to the catalog or value < 0 if open fails.
*/
catalog
open(const basic_string<char>& __s, const locale& __loc) const
{ return this->do_open(__s, __loc); }
// Non-standard and unorthodox, yet effective.
/*
* @brief Open a message catalog.
*
* This non-standard function opens and returns a handle to a message
* catalog by returning do_open(s, loc). The third argument provides a
* message catalog root directory for gnu gettext and is ignored
* otherwise.
*
* @param s The catalog to open.
* @param loc Locale to use for character set conversions.
* @param dir Message catalog root directory.
* @return Handle to the catalog or value < 0 if open fails.
*/
catalog
open(const basic_string<char>&, const locale&, const char*) const;
/*
* @brief Look up a string in a message catalog.
*
* This function retrieves and returns a message from a catalog by
* returning do_get(c, set, msgid, s).
*
* For gnu, @a set and @a msgid are ignored. Returns gettext(s).
* For default, returns s. For ieee, returns catgets(c,set,msgid,s).
*
* @param c The catalog to access.
* @param set Implementation-defined.
* @param msgid Implementation-defined.
* @param s Default return value if retrieval fails.
* @return Retrieved message or @a s if get fails.
*/
string_type
get(catalog __c, int __set, int __msgid, const string_type& __s) const
{ return this->do_get(__c, __set, __msgid, __s); }
/*
* @brief Close a message catalog.
*
* Closes catalog @a c by calling do_close(c).
*
* @param c The catalog to close.
*/
void
close(catalog __c) const
{ return this->do_close(__c); }
protected:
/// Destructor.
virtual
~messages();
/*
* @brief Open a message catalog.
*
* This function opens and returns a handle to a message catalog in an
* implementation-defined manner. This function is a hook for derived
* classes to change the value returned.
*
* @param s The catalog to open.
* @param loc Locale to use for character set conversions.
* @return Handle to the opened catalog, value < 0 if open failed.
*/
virtual catalog
do_open(const basic_string<char>&, const locale&) const;
/*
* @brief Look up a string in a message catalog.
*
* This function retrieves and returns a message from a catalog in an
* implementation-defined manner. This function is a hook for derived
* classes to change the value returned.
*
* For gnu, @a set and @a msgid are ignored. Returns gettext(s).
* For default, returns s. For ieee, returns catgets(c,set,msgid,s).
*
* @param c The catalog to access.
* @param set Implementation-defined.
* @param msgid Implementation-defined.
* @param s Default return value if retrieval fails.
* @return Retrieved message or @a s if get fails.
*/
virtual string_type
do_get(catalog, int, int, const string_type& __dfault) const;
/*
* @brief Close a message catalog.
*
* @param c The catalog to close.
*/
virtual void
do_close(catalog) const;
// Returns a locale and codeset-converted string, given a char* message.
char*
_M_convert_to_char(const string_type& __msg) const
{
// XXX
return reinterpret_cast<char*>(const_cast<_CharT*>(__msg.c_str()));
}
// Returns a locale and codeset-converted string, given a char* message.
string_type
_M_convert_from_char(char*) const
{
#if 0
// Length of message string without terminating null.
size_t __len = char_traits<char>::length(__msg) - 1;
// "everybody can easily convert the string using
// mbsrtowcs/wcsrtombs or with iconv()"
// Convert char* to _CharT in locale used to open catalog.
// XXX need additional template parameter on messages class for this..
// typedef typename codecvt<char, _CharT, _StateT> __codecvt_type;
typedef typename codecvt<char, _CharT, mbstate_t> __codecvt_type;
__codecvt_type::state_type __state;
// XXX may need to initialize state.
//initialize_state(__state._M_init());
char* __from_next;
// XXX what size for this string?
_CharT* __to = static_cast<_CharT*>(__builtin_alloca(__len + 1));
const __codecvt_type& __cvt = use_facet<__codecvt_type>(_M_locale_conv);
__cvt.out(__state, __msg, __msg + __len, __from_next,
__to, __to + __len + 1, __to_next);
return string_type(__to);
#endif
#if 0
typedef ctype<_CharT> __ctype_type;
// const __ctype_type& __cvt = use_facet<__ctype_type>(_M_locale_msg);
const __ctype_type& __cvt = use_facet<__ctype_type>(locale());
// XXX Again, proper length of converted string an issue here.
// For now, assume the converted length is not larger.
_CharT* __dest = static_cast<_CharT*>(__builtin_alloca(__len + 1));
__cvt.widen(__msg, __msg + __len, __dest);
return basic_string<_CharT>(__dest);
#endif
return string_type();
}
};
template<typename _CharT>
locale::id messages<_CharT>::id;
/// Specializations for required instantiations.
template<>
string
messages<char>::do_get(catalog, int, int, const string&) const;
#ifdef _GLIBCXX_USE_WCHAR_T
template<>
wstring
messages<wchar_t>::do_get(catalog, int, int, const wstring&) const;
#endif
/// class messages_byname [22.2.7.2].
template<typename _CharT>
class messages_byname : public messages<_CharT>
{
public:
typedef _CharT char_type;
typedef basic_string<_CharT> string_type;
explicit
messages_byname(const char* __s, size_t __refs = 0);
protected:
virtual
~messages_byname()
{ }
};
_GLIBCXX_END_NAMESPACE
// Include host and configuration specific messages functions.
#include <bits/messages_members.h>
// 22.2.1.5 Template class codecvt
#include <bits/codecvt.h>
#ifndef _GLIBCXX_EXPORT_TEMPLATE
# include <bits/locale_facets_nonio.tcc>
#endif
#endif
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