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gcc/libstdc++-v3/include/bits/locale_facets.h
Paolo Carlini bfdb907ca2 locale_facets.tcc (num_get<>::_M_extract_float): Special case main parsing loop for !_M_allocated (i.e., "C" locale). 
2006-04-29  Paolo Carlini  <pcarlini@suse.de>

	* include/bits/locale_facets.tcc (num_get<>::_M_extract_float):
	Special case main parsing loop for !_M_allocated (i.e., "C" locale).
	(num_get<>::_M_extract_int): Likewise.
	* include/bits/locale_facets.h (num_get<>::_M_find): New.

From-SVN: r113377
2006-04-29 18:16:47 +00:00

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// Locale support -*- C++ -*-
// Copyright (C) 1997, 1998, 1999, 2000, 2001, 2002, 2003, 2004, 2005, 2006
// 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 2, 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.
// You should have received a copy of the GNU General Public License along
// with this library; see the file COPYING. If not, write to the Free
// Software Foundation, 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301,
// USA.
// As a special exception, you may use this file as part of a free software
// library without restriction. Specifically, if other files instantiate
// templates or use macros or inline functions from this file, or you compile
// this file and link it with other files to produce an executable, this
// file does not by itself cause the resulting executable to be covered by
// the GNU General Public License. This exception does not however
// invalidate any other reasons why the executable file might be covered by
// the GNU General Public License.
//
// ISO C++ 14882: 22.1 Locales
//
/** @file locale_facets.h
* This is an internal header file, included by other library headers.
* You should not attempt to use it directly.
*/
#ifndef _LOCALE_FACETS_H
#define _LOCALE_FACETS_H 1
#pragma GCC system_header
#include <ctime> // For struct tm
#include <cwctype> // For wctype_t
#include <iosfwd>
#include <bits/ios_base.h> // For ios_base, ios_base::iostate
#include <streambuf>
#include <bits/cpp_type_traits.h>
_GLIBCXX_BEGIN_NAMESPACE(std)
// NB: Don't instantiate required wchar_t facets if no wchar_t support.
#ifdef _GLIBCXX_USE_WCHAR_T
# define _GLIBCXX_NUM_FACETS 28
#else
# define _GLIBCXX_NUM_FACETS 14
#endif
// Convert string to numeric value of type _Tv and store results.
// NB: This is specialized for all required types, there is no
// generic definition.
template<typename _Tv>
void
__convert_to_v(const char* __in, _Tv& __out, ios_base::iostate& __err,
const __c_locale& __cloc);
// Explicit specializations for required types.
template<>
void
__convert_to_v(const char*, float&, ios_base::iostate&,
const __c_locale&);
template<>
void
__convert_to_v(const char*, double&, ios_base::iostate&,
const __c_locale&);
template<>
void
__convert_to_v(const char*, long double&, ios_base::iostate&,
const __c_locale&);
// NB: __pad is a struct, rather than a function, so it can be
// partially-specialized.
template<typename _CharT, typename _Traits>
struct __pad
{
static void
_S_pad(ios_base& __io, _CharT __fill, _CharT* __news,
const _CharT* __olds, const streamsize __newlen,
const streamsize __oldlen, const bool __num);
};
// Used by both numeric and monetary facets.
// Inserts "group separator" characters into an array of characters.
// It's recursive, one iteration per group. It moves the characters
// in the buffer this way: "xxxx12345" -> "12,345xxx". Call this
// only with __glen != 0.
template<typename _CharT>
_CharT*
__add_grouping(_CharT* __s, _CharT __sep,
const char* __gbeg, size_t __gsize,
const _CharT* __first, const _CharT* __last);
// This template permits specializing facet output code for
// ostreambuf_iterator. For ostreambuf_iterator, sputn is
// significantly more efficient than incrementing iterators.
template<typename _CharT>
inline
ostreambuf_iterator<_CharT>
__write(ostreambuf_iterator<_CharT> __s, const _CharT* __ws, int __len)
{
__s._M_put(__ws, __len);
return __s;
}
// This is the unspecialized form of the template.
template<typename _CharT, typename _OutIter>
inline
_OutIter
__write(_OutIter __s, const _CharT* __ws, int __len)
{
for (int __j = 0; __j < __len; __j++, ++__s)
*__s = __ws[__j];
return __s;
}
// 22.2.1.1 Template class ctype
// Include host and configuration specific ctype enums for ctype_base.
#include <bits/ctype_base.h>
// Common base for ctype<_CharT>.
/**
* @brief Common base for ctype facet
*
* This template class provides implementations of the public functions
* that forward to the protected virtual functions.
*
* This template also provides abtract stubs for the protected virtual
* functions.
*/
template<typename _CharT>
class __ctype_abstract_base : public locale::facet, public ctype_base
{
public:
// Types:
/// Typedef for the template parameter
typedef _CharT char_type;
/**
* @brief Test char_type classification.
*
* This function finds a mask M for @a c and compares it to mask @a m.
* It does so by returning the value of ctype<char_type>::do_is().
*
* @param c The char_type to compare the mask of.
* @param m The mask to compare against.
* @return (M & m) != 0.
*/
bool
is(mask __m, char_type __c) const
{ return this->do_is(__m, __c); }
/**
* @brief Return a mask array.
*
* This function finds the mask for each char_type in the range [lo,hi)
* and successively writes it to vec. vec must have as many elements
* as the char array. It does so by returning the value of
* ctype<char_type>::do_is().
*
* @param lo Pointer to start of range.
* @param hi Pointer to end of range.
* @param vec Pointer to an array of mask storage.
* @return @a hi.
*/
const char_type*
is(const char_type *__lo, const char_type *__hi, mask *__vec) const
{ return this->do_is(__lo, __hi, __vec); }
/**
* @brief Find char_type matching a mask
*
* This function searches for and returns the first char_type c in
* [lo,hi) for which is(m,c) is true. It does so by returning
* ctype<char_type>::do_scan_is().
*
* @param m The mask to compare against.
* @param lo Pointer to start of range.
* @param hi Pointer to end of range.
* @return Pointer to matching char_type if found, else @a hi.
*/
const char_type*
scan_is(mask __m, const char_type* __lo, const char_type* __hi) const
{ return this->do_scan_is(__m, __lo, __hi); }
/**
* @brief Find char_type not matching a mask
*
* This function searches for and returns the first char_type c in
* [lo,hi) for which is(m,c) is false. It does so by returning
* ctype<char_type>::do_scan_not().
*
* @param m The mask to compare against.
* @param lo Pointer to first char in range.
* @param hi Pointer to end of range.
* @return Pointer to non-matching char if found, else @a hi.
*/
const char_type*
scan_not(mask __m, const char_type* __lo, const char_type* __hi) const
{ return this->do_scan_not(__m, __lo, __hi); }
/**
* @brief Convert to uppercase.
*
* This function converts the argument to uppercase if possible.
* If not possible (for example, '2'), returns the argument. It does
* so by returning ctype<char_type>::do_toupper().
*
* @param c The char_type to convert.
* @return The uppercase char_type if convertible, else @a c.
*/
char_type
toupper(char_type __c) const
{ return this->do_toupper(__c); }
/**
* @brief Convert array to uppercase.
*
* This function converts each char_type in the range [lo,hi) to
* uppercase if possible. Other elements remain untouched. It does so
* by returning ctype<char_type>:: do_toupper(lo, hi).
*
* @param lo Pointer to start of range.
* @param hi Pointer to end of range.
* @return @a hi.
*/
const char_type*
toupper(char_type *__lo, const char_type* __hi) const
{ return this->do_toupper(__lo, __hi); }
/**
* @brief Convert to lowercase.
*
* This function converts the argument to lowercase if possible. If
* not possible (for example, '2'), returns the argument. It does so
* by returning ctype<char_type>::do_tolower(c).
*
* @param c The char_type to convert.
* @return The lowercase char_type if convertible, else @a c.
*/
char_type
tolower(char_type __c) const
{ return this->do_tolower(__c); }
/**
* @brief Convert array to lowercase.
*
* This function converts each char_type in the range [lo,hi) to
* lowercase if possible. Other elements remain untouched. It does so
* by returning ctype<char_type>:: do_tolower(lo, hi).
*
* @param lo Pointer to start of range.
* @param hi Pointer to end of range.
* @return @a hi.
*/
const char_type*
tolower(char_type* __lo, const char_type* __hi) const
{ return this->do_tolower(__lo, __hi); }
/**
* @brief Widen char to char_type
*
* This function converts the char argument to char_type using the
* simplest reasonable transformation. It does so by returning
* ctype<char_type>::do_widen(c).
*
* Note: this is not what you want for codepage conversions. See
* codecvt for that.
*
* @param c The char to convert.
* @return The converted char_type.
*/
char_type
widen(char __c) const
{ return this->do_widen(__c); }
/**
* @brief Widen array to char_type
*
* This function converts each char in the input to char_type using the
* simplest reasonable transformation. It does so by returning
* ctype<char_type>::do_widen(c).
*
* Note: this is not what you want for codepage conversions. See
* codecvt for that.
*
* @param lo Pointer to start of range.
* @param hi Pointer to end of range.
* @param to Pointer to the destination array.
* @return @a hi.
*/
const char*
widen(const char* __lo, const char* __hi, char_type* __to) const
{ return this->do_widen(__lo, __hi, __to); }
/**
* @brief Narrow char_type to char
*
* This function converts the char_type to char using the simplest
* reasonable transformation. If the conversion fails, dfault is
* returned instead. It does so by returning
* ctype<char_type>::do_narrow(c).
*
* Note: this is not what you want for codepage conversions. See
* codecvt for that.
*
* @param c The char_type to convert.
* @param dfault Char to return if conversion fails.
* @return The converted char.
*/
char
narrow(char_type __c, char __dfault) const
{ return this->do_narrow(__c, __dfault); }
/**
* @brief Narrow array to char array
*
* This function converts each char_type in the input to char using the
* simplest reasonable transformation and writes the results to the
* destination array. For any char_type in the input that cannot be
* converted, @a dfault is used instead. It does so by returning
* ctype<char_type>::do_narrow(lo, hi, dfault, to).
*
* Note: this is not what you want for codepage conversions. See
* codecvt for that.
*
* @param lo Pointer to start of range.
* @param hi Pointer to end of range.
* @param dfault Char to use if conversion fails.
* @param to Pointer to the destination array.
* @return @a hi.
*/
const char_type*
narrow(const char_type* __lo, const char_type* __hi,
char __dfault, char *__to) const
{ return this->do_narrow(__lo, __hi, __dfault, __to); }
protected:
explicit
__ctype_abstract_base(size_t __refs = 0): facet(__refs) { }
virtual
~__ctype_abstract_base() { }
/**
* @brief Test char_type classification.
*
* This function finds a mask M for @a c and compares it to mask @a m.
*
* do_is() is a hook for a derived facet to change the behavior of
* classifying. do_is() must always return the same result for the
* same input.
*
* @param c The char_type to find the mask of.
* @param m The mask to compare against.
* @return (M & m) != 0.
*/
virtual bool
do_is(mask __m, char_type __c) const = 0;
/**
* @brief Return a mask array.
*
* This function finds the mask for each char_type in the range [lo,hi)
* and successively writes it to vec. vec must have as many elements
* as the input.
*
* do_is() is a hook for a derived facet to change the behavior of
* classifying. do_is() must always return the same result for the
* same input.
*
* @param lo Pointer to start of range.
* @param hi Pointer to end of range.
* @param vec Pointer to an array of mask storage.
* @return @a hi.
*/
virtual const char_type*
do_is(const char_type* __lo, const char_type* __hi,
mask* __vec) const = 0;
/**
* @brief Find char_type matching mask
*
* This function searches for and returns the first char_type c in
* [lo,hi) for which is(m,c) is true.
*
* do_scan_is() is a hook for a derived facet to change the behavior of
* match searching. do_is() must always return the same result for the
* same input.
*
* @param m The mask to compare against.
* @param lo Pointer to start of range.
* @param hi Pointer to end of range.
* @return Pointer to a matching char_type if found, else @a hi.
*/
virtual const char_type*
do_scan_is(mask __m, const char_type* __lo,
const char_type* __hi) const = 0;
/**
* @brief Find char_type not matching mask
*
* This function searches for and returns a pointer to the first
* char_type c of [lo,hi) for which is(m,c) is false.
*
* do_scan_is() is a hook for a derived facet to change the behavior of
* match searching. do_is() must always return the same result for the
* same input.
*
* @param m The mask to compare against.
* @param lo Pointer to start of range.
* @param hi Pointer to end of range.
* @return Pointer to a non-matching char_type if found, else @a hi.
*/
virtual const char_type*
do_scan_not(mask __m, const char_type* __lo,
const char_type* __hi) const = 0;
/**
* @brief Convert to uppercase.
*
* This virtual function converts the char_type argument to uppercase
* if possible. If not possible (for example, '2'), returns the
* argument.
*
* do_toupper() is a hook for a derived facet to change the behavior of
* uppercasing. do_toupper() must always return the same result for
* the same input.
*
* @param c The char_type to convert.
* @return The uppercase char_type if convertible, else @a c.
*/
virtual char_type
do_toupper(char_type) const = 0;
/**
* @brief Convert array to uppercase.
*
* This virtual function converts each char_type in the range [lo,hi)
* to uppercase if possible. Other elements remain untouched.
*
* do_toupper() is a hook for a derived facet to change the behavior of
* uppercasing. do_toupper() must always return the same result for
* the same input.
*
* @param lo Pointer to start of range.
* @param hi Pointer to end of range.
* @return @a hi.
*/
virtual const char_type*
do_toupper(char_type* __lo, const char_type* __hi) const = 0;
/**
* @brief Convert to lowercase.
*
* This virtual function converts the argument to lowercase if
* possible. If not possible (for example, '2'), returns the argument.
*
* do_tolower() is a hook for a derived facet to change the behavior of
* lowercasing. do_tolower() must always return the same result for
* the same input.
*
* @param c The char_type to convert.
* @return The lowercase char_type if convertible, else @a c.
*/
virtual char_type
do_tolower(char_type) const = 0;
/**
* @brief Convert array to lowercase.
*
* This virtual function converts each char_type in the range [lo,hi)
* to lowercase if possible. Other elements remain untouched.
*
* do_tolower() is a hook for a derived facet to change the behavior of
* lowercasing. do_tolower() must always return the same result for
* the same input.
*
* @param lo Pointer to start of range.
* @param hi Pointer to end of range.
* @return @a hi.
*/
virtual const char_type*
do_tolower(char_type* __lo, const char_type* __hi) const = 0;
/**
* @brief Widen char
*
* This virtual function converts the char to char_type using the
* simplest reasonable transformation.
*
* do_widen() is a hook for a derived facet to change the behavior of
* widening. do_widen() must always return the same result for the
* same input.
*
* Note: this is not what you want for codepage conversions. See
* codecvt for that.
*
* @param c The char to convert.
* @return The converted char_type
*/
virtual char_type
do_widen(char) const = 0;
/**
* @brief Widen char array
*
* This function converts each char in the input to char_type using the
* simplest reasonable transformation.
*
* do_widen() is a hook for a derived facet to change the behavior of
* widening. do_widen() must always return the same result for the
* same input.
*
* Note: this is not what you want for codepage conversions. See
* codecvt for that.
*
* @param lo Pointer to start range.
* @param hi Pointer to end of range.
* @param to Pointer to the destination array.
* @return @a hi.
*/
virtual const char*
do_widen(const char* __lo, const char* __hi,
char_type* __dest) const = 0;
/**
* @brief Narrow char_type to char
*
* This virtual function converts the argument to char using the
* simplest reasonable transformation. If the conversion fails, dfault
* is returned instead.
*
* do_narrow() is a hook for a derived facet to change the behavior of
* narrowing. do_narrow() must always return the same result for the
* same input.
*
* Note: this is not what you want for codepage conversions. See
* codecvt for that.
*
* @param c The char_type to convert.
* @param dfault Char to return if conversion fails.
* @return The converted char.
*/
virtual char
do_narrow(char_type, char __dfault) const = 0;
/**
* @brief Narrow char_type array to char
*
* This virtual function converts each char_type in the range [lo,hi) to
* char using the simplest reasonable transformation and writes the
* results to the destination array. For any element in the input that
* cannot be converted, @a dfault is used instead.
*
* do_narrow() is a hook for a derived facet to change the behavior of
* narrowing. do_narrow() must always return the same result for the
* same input.
*
* Note: this is not what you want for codepage conversions. See
* codecvt for that.
*
* @param lo Pointer to start of range.
* @param hi Pointer to end of range.
* @param dfault Char to use if conversion fails.
* @param to Pointer to the destination array.
* @return @a hi.
*/
virtual const char_type*
do_narrow(const char_type* __lo, const char_type* __hi,
char __dfault, char* __dest) const = 0;
};
// NB: Generic, mostly useless implementation.
/**
* @brief Template ctype facet
*
* This template class defines classification and conversion functions for
* character sets. It wraps <cctype> functionality. Ctype gets used by
* streams for many I/O operations.
*
* This template provides the protected virtual functions the developer
* will have to replace in a derived class or specialization to make a
* working facet. The public functions that access them are defined in
* __ctype_abstract_base, to allow for implementation flexibility. See
* ctype<wchar_t> for an example. The functions are documented in
* __ctype_abstract_base.
*
* Note: implementations are provided for all the protected virtual
* functions, but will likely not be useful.
*/
template<typename _CharT>
class ctype : public __ctype_abstract_base<_CharT>
{
public:
// Types:
typedef _CharT char_type;
typedef typename __ctype_abstract_base<_CharT>::mask mask;
/// The facet id for ctype<char_type>
static locale::id id;
explicit
ctype(size_t __refs = 0) : __ctype_abstract_base<_CharT>(__refs) { }
protected:
virtual
~ctype();
virtual bool
do_is(mask __m, char_type __c) const;
virtual const char_type*
do_is(const char_type* __lo, const char_type* __hi, mask* __vec) const;
virtual const char_type*
do_scan_is(mask __m, const char_type* __lo, const char_type* __hi) const;
virtual const char_type*
do_scan_not(mask __m, const char_type* __lo,
const char_type* __hi) const;
virtual char_type
do_toupper(char_type __c) const;
virtual const char_type*
do_toupper(char_type* __lo, const char_type* __hi) const;
virtual char_type
do_tolower(char_type __c) const;
virtual const char_type*
do_tolower(char_type* __lo, const char_type* __hi) const;
virtual char_type
do_widen(char __c) const;
virtual const char*
do_widen(const char* __lo, const char* __hi, char_type* __dest) const;
virtual char
do_narrow(char_type, char __dfault) const;
virtual const char_type*
do_narrow(const char_type* __lo, const char_type* __hi,
char __dfault, char* __dest) const;
};
template<typename _CharT>
locale::id ctype<_CharT>::id;
// 22.2.1.3 ctype<char> specialization.
/**
* @brief The ctype<char> specialization.
*
* This class defines classification and conversion functions for
* the char type. It gets used by char streams for many I/O
* operations. The char specialization provides a number of
* optimizations as well.
*/
template<>
class ctype<char> : public locale::facet, public ctype_base
{
public:
// Types:
/// Typedef for the template parameter char.
typedef char char_type;
protected:
// Data Members:
__c_locale _M_c_locale_ctype;
bool _M_del;
__to_type _M_toupper;
__to_type _M_tolower;
const mask* _M_table;
mutable char _M_widen_ok;
mutable char _M_widen[1 + static_cast<unsigned char>(-1)];
mutable char _M_narrow[1 + static_cast<unsigned char>(-1)];
mutable char _M_narrow_ok; // 0 uninitialized, 1 init,
// 2 memcpy can't be used
public:
/// The facet id for ctype<char>
static locale::id id;
/// The size of the mask table. It is SCHAR_MAX + 1.
static const size_t table_size = 1 + static_cast<unsigned char>(-1);
/**
* @brief Constructor performs initialization.
*
* This is the constructor provided by the standard.
*
* @param table If non-zero, table is used as the per-char mask.
* Else classic_table() is used.
* @param del If true, passes ownership of table to this facet.
* @param refs Passed to the base facet class.
*/
explicit
ctype(const mask* __table = 0, bool __del = false, size_t __refs = 0);
/**
* @brief Constructor performs static initialization.
*
* This constructor is used to construct the initial C locale facet.
*
* @param cloc Handle to C locale data.
* @param table If non-zero, table is used as the per-char mask.
* @param del If true, passes ownership of table to this facet.
* @param refs Passed to the base facet class.
*/
explicit
ctype(__c_locale __cloc, const mask* __table = 0, bool __del = false,
size_t __refs = 0);
/**
* @brief Test char classification.
*
* This function compares the mask table[c] to @a m.
*
* @param c The char to compare the mask of.
* @param m The mask to compare against.
* @return True if m & table[c] is true, false otherwise.
*/
inline bool
is(mask __m, char __c) const;
/**
* @brief Return a mask array.
*
* This function finds the mask for each char in the range [lo, hi) and
* successively writes it to vec. vec must have as many elements as
* the char array.
*
* @param lo Pointer to start of range.
* @param hi Pointer to end of range.
* @param vec Pointer to an array of mask storage.
* @return @a hi.
*/
inline const char*
is(const char* __lo, const char* __hi, mask* __vec) const;
/**
* @brief Find char matching a mask
*
* This function searches for and returns the first char in [lo,hi) for
* which is(m,char) is true.
*
* @param m The mask to compare against.
* @param lo Pointer to start of range.
* @param hi Pointer to end of range.
* @return Pointer to a matching char if found, else @a hi.
*/
inline const char*
scan_is(mask __m, const char* __lo, const char* __hi) const;
/**
* @brief Find char not matching a mask
*
* This function searches for and returns a pointer to the first char
* in [lo,hi) for which is(m,char) is false.
*
* @param m The mask to compare against.
* @param lo Pointer to start of range.
* @param hi Pointer to end of range.
* @return Pointer to a non-matching char if found, else @a hi.
*/
inline const char*
scan_not(mask __m, const char* __lo, const char* __hi) const;
/**
* @brief Convert to uppercase.
*
* This function converts the char argument to uppercase if possible.
* If not possible (for example, '2'), returns the argument.
*
* toupper() acts as if it returns ctype<char>::do_toupper(c).
* do_toupper() must always return the same result for the same input.
*
* @param c The char to convert.
* @return The uppercase char if convertible, else @a c.
*/
char_type
toupper(char_type __c) const
{ return this->do_toupper(__c); }
/**
* @brief Convert array to uppercase.
*
* This function converts each char in the range [lo,hi) to uppercase
* if possible. Other chars remain untouched.
*
* toupper() acts as if it returns ctype<char>:: do_toupper(lo, hi).
* do_toupper() must always return the same result for the same input.
*
* @param lo Pointer to first char in range.
* @param hi Pointer to end of range.
* @return @a hi.
*/
const char_type*
toupper(char_type *__lo, const char_type* __hi) const
{ return this->do_toupper(__lo, __hi); }
/**
* @brief Convert to lowercase.
*
* This function converts the char argument to lowercase if possible.
* If not possible (for example, '2'), returns the argument.
*
* tolower() acts as if it returns ctype<char>::do_tolower(c).
* do_tolower() must always return the same result for the same input.
*
* @param c The char to convert.
* @return The lowercase char if convertible, else @a c.
*/
char_type
tolower(char_type __c) const
{ return this->do_tolower(__c); }
/**
* @brief Convert array to lowercase.
*
* This function converts each char in the range [lo,hi) to lowercase
* if possible. Other chars remain untouched.
*
* tolower() acts as if it returns ctype<char>:: do_tolower(lo, hi).
* do_tolower() must always return the same result for the same input.
*
* @param lo Pointer to first char in range.
* @param hi Pointer to end of range.
* @return @a hi.
*/
const char_type*
tolower(char_type* __lo, const char_type* __hi) const
{ return this->do_tolower(__lo, __hi); }
/**
* @brief Widen char
*
* This function converts the char to char_type using the simplest
* reasonable transformation. For an underived ctype<char> facet, the
* argument will be returned unchanged.
*
* This function works as if it returns ctype<char>::do_widen(c).
* do_widen() must always return the same result for the same input.
*
* Note: this is not what you want for codepage conversions. See
* codecvt for that.
*
* @param c The char to convert.
* @return The converted character.
*/
char_type
widen(char __c) const
{
if (_M_widen_ok)
return _M_widen[static_cast<unsigned char>(__c)];
this->_M_widen_init();
return this->do_widen(__c);
}
/**
* @brief Widen char array
*
* This function converts each char in the input to char using the
* simplest reasonable transformation. For an underived ctype<char>
* facet, the argument will be copied unchanged.
*
* This function works as if it returns ctype<char>::do_widen(c).
* do_widen() must always return the same result for the same input.
*
* Note: this is not what you want for codepage conversions. See
* codecvt for that.
*
* @param lo Pointer to first char in range.
* @param hi Pointer to end of range.
* @param to Pointer to the destination array.
* @return @a hi.
*/
const char*
widen(const char* __lo, const char* __hi, char_type* __to) const
{
if (_M_widen_ok == 1)
{
memcpy(__to, __lo, __hi - __lo);
return __hi;
}
if (!_M_widen_ok)
_M_widen_init();
return this->do_widen(__lo, __hi, __to);
}
/**
* @brief Narrow char
*
* This function converts the char to char using the simplest
* reasonable transformation. If the conversion fails, dfault is
* returned instead. For an underived ctype<char> facet, @a c
* will be returned unchanged.
*
* This function works as if it returns ctype<char>::do_narrow(c).
* do_narrow() must always return the same result for the same input.
*
* Note: this is not what you want for codepage conversions. See
* codecvt for that.
*
* @param c The char to convert.
* @param dfault Char to return if conversion fails.
* @return The converted character.
*/
char
narrow(char_type __c, char __dfault) const
{
if (_M_narrow[static_cast<unsigned char>(__c)])
return _M_narrow[static_cast<unsigned char>(__c)];
const char __t = do_narrow(__c, __dfault);
if (__t != __dfault)
_M_narrow[static_cast<unsigned char>(__c)] = __t;
return __t;
}
/**
* @brief Narrow char array
*
* This function converts each char in the input to char using the
* simplest reasonable transformation and writes the results to the
* destination array. For any char in the input that cannot be
* converted, @a dfault is used instead. For an underived ctype<char>
* facet, the argument will be copied unchanged.
*
* This function works as if it returns ctype<char>::do_narrow(lo, hi,
* dfault, to). do_narrow() must always return the same result for the
* same input.
*
* Note: this is not what you want for codepage conversions. See
* codecvt for that.
*
* @param lo Pointer to start of range.
* @param hi Pointer to end of range.
* @param dfault Char to use if conversion fails.
* @param to Pointer to the destination array.
* @return @a hi.
*/
const char_type*
narrow(const char_type* __lo, const char_type* __hi,
char __dfault, char *__to) const
{
if (__builtin_expect(_M_narrow_ok == 1, true))
{
memcpy(__to, __lo, __hi - __lo);
return __hi;
}
if (!_M_narrow_ok)
_M_narrow_init();
return this->do_narrow(__lo, __hi, __dfault, __to);
}
protected:
/// Returns a pointer to the mask table provided to the constructor, or
/// the default from classic_table() if none was provided.
const mask*
table() const throw()
{ return _M_table; }
/// Returns a pointer to the C locale mask table.
static const mask*
classic_table() throw();
/**
* @brief Destructor.
*
* This function deletes table() if @a del was true in the
* constructor.
*/
virtual
~ctype();
/**
* @brief Convert to uppercase.
*
* This virtual function converts the char argument to uppercase if
* possible. If not possible (for example, '2'), returns the argument.
*
* do_toupper() is a hook for a derived facet to change the behavior of
* uppercasing. do_toupper() must always return the same result for
* the same input.
*
* @param c The char to convert.
* @return The uppercase char if convertible, else @a c.
*/
virtual char_type
do_toupper(char_type) const;
/**
* @brief Convert array to uppercase.
*
* This virtual function converts each char in the range [lo,hi) to
* uppercase if possible. Other chars remain untouched.
*
* do_toupper() is a hook for a derived facet to change the behavior of
* uppercasing. do_toupper() must always return the same result for
* the same input.
*
* @param lo Pointer to start of range.
* @param hi Pointer to end of range.
* @return @a hi.
*/
virtual const char_type*
do_toupper(char_type* __lo, const char_type* __hi) const;
/**
* @brief Convert to lowercase.
*
* This virtual function converts the char argument to lowercase if
* possible. If not possible (for example, '2'), returns the argument.
*
* do_tolower() is a hook for a derived facet to change the behavior of
* lowercasing. do_tolower() must always return the same result for
* the same input.
*
* @param c The char to convert.
* @return The lowercase char if convertible, else @a c.
*/
virtual char_type
do_tolower(char_type) const;
/**
* @brief Convert array to lowercase.
*
* This virtual function converts each char in the range [lo,hi) to
* lowercase if possible. Other chars remain untouched.
*
* do_tolower() is a hook for a derived facet to change the behavior of
* lowercasing. do_tolower() must always return the same result for
* the same input.
*
* @param lo Pointer to first char in range.
* @param hi Pointer to end of range.
* @return @a hi.
*/
virtual const char_type*
do_tolower(char_type* __lo, const char_type* __hi) const;
/**
* @brief Widen char
*
* This virtual function converts the char to char using the simplest
* reasonable transformation. For an underived ctype<char> facet, the
* argument will be returned unchanged.
*
* do_widen() is a hook for a derived facet to change the behavior of
* widening. do_widen() must always return the same result for the
* same input.
*
* Note: this is not what you want for codepage conversions. See
* codecvt for that.
*
* @param c The char to convert.
* @return The converted character.
*/
virtual char_type
do_widen(char __c) const
{ return __c; }
/**
* @brief Widen char array
*
* This function converts each char in the range [lo,hi) to char using
* the simplest reasonable transformation. For an underived
* ctype<char> facet, the argument will be copied unchanged.
*
* do_widen() is a hook for a derived facet to change the behavior of
* widening. do_widen() must always return the same result for the
* same input.
*
* Note: this is not what you want for codepage conversions. See
* codecvt for that.
*
* @param lo Pointer to start of range.
* @param hi Pointer to end of range.
* @param to Pointer to the destination array.
* @return @a hi.
*/
virtual const char*
do_widen(const char* __lo, const char* __hi, char_type* __dest) const
{
memcpy(__dest, __lo, __hi - __lo);
return __hi;
}
/**
* @brief Narrow char
*
* This virtual function converts the char to char using the simplest
* reasonable transformation. If the conversion fails, dfault is
* returned instead. For an underived ctype<char> facet, @a c will be
* returned unchanged.
*
* do_narrow() is a hook for a derived facet to change the behavior of
* narrowing. do_narrow() must always return the same result for the
* same input.
*
* Note: this is not what you want for codepage conversions. See
* codecvt for that.
*
* @param c The char to convert.
* @param dfault Char to return if conversion fails.
* @return The converted char.
*/
virtual char
do_narrow(char_type __c, char) const
{ return __c; }
/**
* @brief Narrow char array to char array
*
* This virtual function converts each char in the range [lo,hi) to
* char using the simplest reasonable transformation and writes the
* results to the destination array. For any char in the input that
* cannot be converted, @a dfault is used instead. For an underived
* ctype<char> facet, the argument will be copied unchanged.
*
* do_narrow() is a hook for a derived facet to change the behavior of
* narrowing. do_narrow() must always return the same result for the
* same input.
*
* Note: this is not what you want for codepage conversions. See
* codecvt for that.
*
* @param lo Pointer to start of range.
* @param hi Pointer to end of range.
* @param dfault Char to use if conversion fails.
* @param to Pointer to the destination array.
* @return @a hi.
*/
virtual const char_type*
do_narrow(const char_type* __lo, const char_type* __hi,
char, char* __dest) const
{
memcpy(__dest, __lo, __hi - __lo);
return __hi;
}
private:
void _M_widen_init() const
{
char __tmp[sizeof(_M_widen)];
for (size_t __i = 0; __i < sizeof(_M_widen); ++__i)
__tmp[__i] = __i;
do_widen(__tmp, __tmp + sizeof(__tmp), _M_widen);
_M_widen_ok = 1;
// Set _M_widen_ok to 2 if memcpy can't be used.
if (memcmp(__tmp, _M_widen, sizeof(_M_widen)))
_M_widen_ok = 2;
}
// Fill in the narrowing cache and flag whether all values are
// valid or not. _M_narrow_ok is set to 2 if memcpy can't
// be used.
void _M_narrow_init() const
{
char __tmp[sizeof(_M_narrow)];
for (size_t __i = 0; __i < sizeof(_M_narrow); ++__i)
__tmp[__i] = __i;
do_narrow(__tmp, __tmp + sizeof(__tmp), 0, _M_narrow);
_M_narrow_ok = 1;
if (memcmp(__tmp, _M_narrow, sizeof(_M_narrow)))
_M_narrow_ok = 2;
else
{
// Deal with the special case of zero: renarrow with a
// different default and compare.
char __c;
do_narrow(__tmp, __tmp + 1, 1, &__c);
if (__c == 1)
_M_narrow_ok = 2;
}
}
};
template<>
const ctype<char>&
use_facet<ctype<char> >(const locale& __loc);
#ifdef _GLIBCXX_USE_WCHAR_T
// 22.2.1.3 ctype<wchar_t> specialization
/**
* @brief The ctype<wchar_t> specialization.
*
* This class defines classification and conversion functions for the
* wchar_t type. It gets used by wchar_t streams for many I/O operations.
* The wchar_t specialization provides a number of optimizations as well.
*
* ctype<wchar_t> inherits its public methods from
* __ctype_abstract_base<wchar_t>.
*/
template<>
class ctype<wchar_t> : public __ctype_abstract_base<wchar_t>
{
public:
// Types:
/// Typedef for the template parameter wchar_t.
typedef wchar_t char_type;
typedef wctype_t __wmask_type;
protected:
__c_locale _M_c_locale_ctype;
// Pre-computed narrowed and widened chars.
bool _M_narrow_ok;
char _M_narrow[128];
wint_t _M_widen[1 + static_cast<unsigned char>(-1)];
// Pre-computed elements for do_is.
mask _M_bit[16];
__wmask_type _M_wmask[16];
public:
// Data Members:
/// The facet id for ctype<wchar_t>
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
ctype(size_t __refs = 0);
/**
* @brief Constructor performs static initialization.
*
* This constructor is used to construct the initial C locale facet.
*
* @param cloc Handle to C locale data.
* @param refs Passed to the base facet class.
*/
explicit
ctype(__c_locale __cloc, size_t __refs = 0);
protected:
__wmask_type
_M_convert_to_wmask(const mask __m) const;
/// Destructor
virtual
~ctype();
/**
* @brief Test wchar_t classification.
*
* This function finds a mask M for @a c and compares it to mask @a m.
*
* do_is() is a hook for a derived facet to change the behavior of
* classifying. do_is() must always return the same result for the
* same input.
*
* @param c The wchar_t to find the mask of.
* @param m The mask to compare against.
* @return (M & m) != 0.
*/
virtual bool
do_is(mask __m, char_type __c) const;
/**
* @brief Return a mask array.
*
* This function finds the mask for each wchar_t in the range [lo,hi)
* and successively writes it to vec. vec must have as many elements
* as the input.
*
* do_is() is a hook for a derived facet to change the behavior of
* classifying. do_is() must always return the same result for the
* same input.
*
* @param lo Pointer to start of range.
* @param hi Pointer to end of range.
* @param vec Pointer to an array of mask storage.
* @return @a hi.
*/
virtual const char_type*
do_is(const char_type* __lo, const char_type* __hi, mask* __vec) const;
/**
* @brief Find wchar_t matching mask
*
* This function searches for and returns the first wchar_t c in
* [lo,hi) for which is(m,c) is true.
*
* do_scan_is() is a hook for a derived facet to change the behavior of
* match searching. do_is() must always return the same result for the
* same input.
*
* @param m The mask to compare against.
* @param lo Pointer to start of range.
* @param hi Pointer to end of range.
* @return Pointer to a matching wchar_t if found, else @a hi.
*/
virtual const char_type*
do_scan_is(mask __m, const char_type* __lo, const char_type* __hi) const;
/**
* @brief Find wchar_t not matching mask
*
* This function searches for and returns a pointer to the first
* wchar_t c of [lo,hi) for which is(m,c) is false.
*
* do_scan_is() is a hook for a derived facet to change the behavior of
* match searching. do_is() must always return the same result for the
* same input.
*
* @param m The mask to compare against.
* @param lo Pointer to start of range.
* @param hi Pointer to end of range.
* @return Pointer to a non-matching wchar_t if found, else @a hi.
*/
virtual const char_type*
do_scan_not(mask __m, const char_type* __lo,
const char_type* __hi) const;
/**
* @brief Convert to uppercase.
*
* This virtual function converts the wchar_t argument to uppercase if
* possible. If not possible (for example, '2'), returns the argument.
*
* do_toupper() is a hook for a derived facet to change the behavior of
* uppercasing. do_toupper() must always return the same result for
* the same input.
*
* @param c The wchar_t to convert.
* @return The uppercase wchar_t if convertible, else @a c.
*/
virtual char_type
do_toupper(char_type) const;
/**
* @brief Convert array to uppercase.
*
* This virtual function converts each wchar_t in the range [lo,hi) to
* uppercase if possible. Other elements remain untouched.
*
* do_toupper() is a hook for a derived facet to change the behavior of
* uppercasing. do_toupper() must always return the same result for
* the same input.
*
* @param lo Pointer to start of range.
* @param hi Pointer to end of range.
* @return @a hi.
*/
virtual const char_type*
do_toupper(char_type* __lo, const char_type* __hi) const;
/**
* @brief Convert to lowercase.
*
* This virtual function converts the argument to lowercase if
* possible. If not possible (for example, '2'), returns the argument.
*
* do_tolower() is a hook for a derived facet to change the behavior of
* lowercasing. do_tolower() must always return the same result for
* the same input.
*
* @param c The wchar_t to convert.
* @return The lowercase wchar_t if convertible, else @a c.
*/
virtual char_type
do_tolower(char_type) const;
/**
* @brief Convert array to lowercase.
*
* This virtual function converts each wchar_t in the range [lo,hi) to
* lowercase if possible. Other elements remain untouched.
*
* do_tolower() is a hook for a derived facet to change the behavior of
* lowercasing. do_tolower() must always return the same result for
* the same input.
*
* @param lo Pointer to start of range.
* @param hi Pointer to end of range.
* @return @a hi.
*/
virtual const char_type*
do_tolower(char_type* __lo, const char_type* __hi) const;
/**
* @brief Widen char to wchar_t
*
* This virtual function converts the char to wchar_t using the
* simplest reasonable transformation. For an underived ctype<wchar_t>
* facet, the argument will be cast to wchar_t.
*
* do_widen() is a hook for a derived facet to change the behavior of
* widening. do_widen() must always return the same result for the
* same input.
*
* Note: this is not what you want for codepage conversions. See
* codecvt for that.
*
* @param c The char to convert.
* @return The converted wchar_t.
*/
virtual char_type
do_widen(char) const;
/**
* @brief Widen char array to wchar_t array
*
* This function converts each char in the input to wchar_t using the
* simplest reasonable transformation. For an underived ctype<wchar_t>
* facet, the argument will be copied, casting each element to wchar_t.
*
* do_widen() is a hook for a derived facet to change the behavior of
* widening. do_widen() must always return the same result for the
* same input.
*
* Note: this is not what you want for codepage conversions. See
* codecvt for that.
*
* @param lo Pointer to start range.
* @param hi Pointer to end of range.
* @param to Pointer to the destination array.
* @return @a hi.
*/
virtual const char*
do_widen(const char* __lo, const char* __hi, char_type* __dest) const;
/**
* @brief Narrow wchar_t to char
*
* This virtual function converts the argument to char using
* the simplest reasonable transformation. If the conversion
* fails, dfault is returned instead. For an underived
* ctype<wchar_t> facet, @a c will be cast to char and
* returned.
*
* do_narrow() is a hook for a derived facet to change the
* behavior of narrowing. do_narrow() must always return the
* same result for the same input.
*
* Note: this is not what you want for codepage conversions. See
* codecvt for that.
*
* @param c The wchar_t to convert.
* @param dfault Char to return if conversion fails.
* @return The converted char.
*/
virtual char
do_narrow(char_type, char __dfault) const;
/**
* @brief Narrow wchar_t array to char array
*
* This virtual function converts each wchar_t in the range [lo,hi) to
* char using the simplest reasonable transformation and writes the
* results to the destination array. For any wchar_t in the input that
* cannot be converted, @a dfault is used instead. For an underived
* ctype<wchar_t> facet, the argument will be copied, casting each
* element to char.
*
* do_narrow() is a hook for a derived facet to change the behavior of
* narrowing. do_narrow() must always return the same result for the
* same input.
*
* Note: this is not what you want for codepage conversions. See
* codecvt for that.
*
* @param lo Pointer to start of range.
* @param hi Pointer to end of range.
* @param dfault Char to use if conversion fails.
* @param to Pointer to the destination array.
* @return @a hi.
*/
virtual const char_type*
do_narrow(const char_type* __lo, const char_type* __hi,
char __dfault, char* __dest) const;
// For use at construction time only.
void
_M_initialize_ctype();
};
template<>
const ctype<wchar_t>&
use_facet<ctype<wchar_t> >(const locale& __loc);
#endif //_GLIBCXX_USE_WCHAR_T
// Include host and configuration specific ctype inlines.
#include <bits/ctype_inline.h>
/// @brief class ctype_byname [22.2.1.2].
template<typename _CharT>
class ctype_byname : public ctype<_CharT>
{
public:
typedef _CharT char_type;
explicit
ctype_byname(const char* __s, size_t __refs = 0);
protected:
virtual
~ctype_byname() { };
};
/// 22.2.1.4 Class ctype_byname specializations.
template<>
ctype_byname<char>::ctype_byname(const char*, size_t refs);
template<>
ctype_byname<wchar_t>::ctype_byname(const char*, size_t refs);
// 22.2.1.5 Template class codecvt
#include <bits/codecvt.h>
// 22.2.2 The numeric category.
class __num_base
{
public:
// NB: Code depends on the order of _S_atoms_out elements.
// Below are the indices into _S_atoms_out.
enum
{
_S_ominus,
_S_oplus,
_S_ox,
_S_oX,
_S_odigits,
_S_odigits_end = _S_odigits + 16,
_S_oudigits = _S_odigits_end,
_S_oudigits_end = _S_oudigits + 16,
_S_oe = _S_odigits + 14, // For scientific notation, 'e'
_S_oE = _S_oudigits + 14, // For scientific notation, 'E'
_S_oend = _S_oudigits_end
};
// A list of valid numeric literals for output. This array
// contains chars that will be passed through the current locale's
// ctype<_CharT>.widen() and then used to render numbers.
// For the standard "C" locale, this is
// "-+xX0123456789abcdef0123456789ABCDEF".
static const char* _S_atoms_out;
// String literal of acceptable (narrow) input, for num_get.
// "-+xX0123456789abcdefABCDEF"
static const char* _S_atoms_in;
enum
{
_S_iminus,
_S_iplus,
_S_ix,
_S_iX,
_S_izero,
_S_ie = _S_izero + 14,
_S_iE = _S_izero + 20,
_S_iend = 26
};
// num_put
// Construct and return valid scanf format for floating point types.
static void
_S_format_float(const ios_base& __io, char* __fptr, char __mod);
};
template<typename _CharT>
struct __numpunct_cache : public locale::facet
{
const char* _M_grouping;
size_t _M_grouping_size;
bool _M_use_grouping;
const _CharT* _M_truename;
size_t _M_truename_size;
const _CharT* _M_falsename;
size_t _M_falsename_size;
_CharT _M_decimal_point;
_CharT _M_thousands_sep;
// A list of valid numeric literals for output: in the standard
// "C" locale, this is "-+xX0123456789abcdef0123456789ABCDEF".
// This array contains the chars after having been passed
// through the current locale's ctype<_CharT>.widen().
_CharT _M_atoms_out[__num_base::_S_oend];
// A list of valid numeric literals for input: in the standard
// "C" locale, this is "-+xX0123456789abcdefABCDEF"
// This array contains the chars after having been passed
// through the current locale's ctype<_CharT>.widen().
_CharT _M_atoms_in[__num_base::_S_iend];
bool _M_allocated;
__numpunct_cache(size_t __refs = 0) : facet(__refs),
_M_grouping(NULL), _M_grouping_size(0), _M_use_grouping(false),
_M_truename(NULL), _M_truename_size(0), _M_falsename(NULL),
_M_falsename_size(0), _M_decimal_point(_CharT()),
_M_thousands_sep(_CharT()), _M_allocated(false)
{ }
~__numpunct_cache();
void
_M_cache(const locale& __loc);
private:
__numpunct_cache&
operator=(const __numpunct_cache&);
explicit
__numpunct_cache(const __numpunct_cache&);
};
template<typename _CharT>
__numpunct_cache<_CharT>::~__numpunct_cache()
{
if (_M_allocated)
{
delete [] _M_grouping;
delete [] _M_truename;
delete [] _M_falsename;
}
}
/**
* @brief Numpunct facet.
*
* This facet stores several pieces of information related to printing and
* scanning numbers, such as the decimal point character. It takes a
* template parameter specifying the char type. The numpunct facet is
* used by streams for many I/O operations involving numbers.
*
* The numpunct 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 a numpunct facet.
*/
template<typename _CharT>
class numpunct : public locale::facet
{
public:
// Types:
//@{
/// Public typedefs
typedef _CharT char_type;
typedef basic_string<_CharT> string_type;
//@}
typedef __numpunct_cache<_CharT> __cache_type;
protected:
__cache_type* _M_data;
public:
/// Numpunct facet id.
static locale::id id;
/**
* @brief Numpunct constructor.
*
* @param refs Refcount to pass to the base class.
*/
explicit
numpunct(size_t __refs = 0) : facet(__refs), _M_data(NULL)
{ _M_initialize_numpunct(); }
/**
* @brief Internal constructor. Not for general use.
*
* This is a constructor for use by the library itself to set up the
* predefined locale facets.
*
* @param cache __numpunct_cache object.
* @param refs Refcount to pass to the base class.
*/
explicit
numpunct(__cache_type* __cache, size_t __refs = 0)
: facet(__refs), _M_data(__cache)
{ _M_initialize_numpunct(); }
/**
* @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 refs Refcount to pass to the base class.
*/
explicit
numpunct(__c_locale __cloc, size_t __refs = 0)
: facet(__refs), _M_data(NULL)
{ _M_initialize_numpunct(__cloc); }
/**
* @brief Return decimal point character.
*
* This function returns a char_type to use as a decimal point. It
* does so by returning returning
* numpunct<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
* numpunct<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 a number. Groupings indicate where thousands
* separators should be inserted in the integer part of a number.
*
* 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 "\003\002" and is
* applied to the number 123456789, this corresponds to
* 12,34,56,789. Note that if the string was "32", this would
* put more than 50 digits into the least significant group if
* the character set is ASCII.
*
* The string is returned by calling
* numpunct<char_type>::do_grouping().
*
* @return string representing grouping specification.
*/
string
grouping() const
{ return this->do_grouping(); }
/**
* @brief Return string representation of bool true.
*
* This function returns a string_type containing the text
* representation for true bool variables. It does so by calling
* numpunct<char_type>::do_truename().
*
* @return string_type representing printed form of true.
*/
string_type
truename() const
{ return this->do_truename(); }
/**
* @brief Return string representation of bool false.
*
* This function returns a string_type containing the text
* representation for false bool variables. It does so by calling
* numpunct<char_type>::do_falsename().
*
* @return string_type representing printed form of false.
*/
string_type
falsename() const
{ return this->do_falsename(); }
protected:
/// Destructor.
virtual
~numpunct();
/**
* @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 string representation of bool true.
*
* Returns a string_type containing the text representation for true
* bool variables. This function is a hook for derived classes to
* change the value returned.
*
* @return string_type representing printed form of true.
*/
virtual string_type
do_truename() const
{ return _M_data->_M_truename; }
/**
* @brief Return string representation of bool false.
*
* Returns a string_type containing the text representation for false
* bool variables. This function is a hook for derived classes to
* change the value returned.
*
* @return string_type representing printed form of false.
*/
virtual string_type
do_falsename() const
{ return _M_data->_M_falsename; }
// For use at construction time only.
void
_M_initialize_numpunct(__c_locale __cloc = NULL);
};
template<typename _CharT>
locale::id numpunct<_CharT>::id;
template<>
numpunct<char>::~numpunct();
template<>
void
numpunct<char>::_M_initialize_numpunct(__c_locale __cloc);
#ifdef _GLIBCXX_USE_WCHAR_T
template<>
numpunct<wchar_t>::~numpunct();
template<>
void
numpunct<wchar_t>::_M_initialize_numpunct(__c_locale __cloc);
#endif
/// @brief class numpunct_byname [22.2.3.2].
template<typename _CharT>
class numpunct_byname : public numpunct<_CharT>
{
public:
typedef _CharT char_type;
typedef basic_string<_CharT> string_type;
explicit
numpunct_byname(const char* __s, size_t __refs = 0)
: numpunct<_CharT>(__refs)
{
if (std::strcmp(__s, "C") != 0 && std::strcmp(__s, "POSIX") != 0)
{
__c_locale __tmp;
this->_S_create_c_locale(__tmp, __s);
this->_M_initialize_numpunct(__tmp);
this->_S_destroy_c_locale(__tmp);
}
}
protected:
virtual
~numpunct_byname() { }
};
_GLIBCXX_BEGIN_LDBL_NAMESPACE
/**
* @brief Facet for parsing number strings.
*
* This facet encapsulates the code to parse and return a number
* from a string. It is used by the istream numeric extraction
* operators.
*
* The num_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 num_get facet.
*/
template<typename _CharT, typename _InIter>
class num_get : public locale::facet
{
public:
// Types:
//@{
/// Public typedefs
typedef _CharT char_type;
typedef _InIter 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
num_get(size_t __refs = 0) : facet(__refs) { }
/**
* @brief Numeric parsing.
*
* Parses the input stream into the bool @a v. It does so by calling
* num_get::do_get().
*
* If ios_base::boolalpha is set, attempts to read
* ctype<CharT>::truename() or ctype<CharT>::falsename(). Sets
* @a v to true or false if successful. Sets err to
* ios_base::failbit if reading the string fails. Sets err to
* ios_base::eofbit if the stream is emptied.
*
* If ios_base::boolalpha is not set, proceeds as with reading a long,
* except if the value is 1, sets @a v to true, if the value is 0, sets
* @a v to false, and otherwise set err to ios_base::failbit.
*
* @param in Start of input stream.
* @param end End of input stream.
* @param io Source of locale and flags.
* @param err Error flags to set.
* @param v Value to format and insert.
* @return Iterator after reading.
*/
iter_type
get(iter_type __in, iter_type __end, ios_base& __io,
ios_base::iostate& __err, bool& __v) const
{ return this->do_get(__in, __end, __io, __err, __v); }
//@{
/**
* @brief Numeric parsing.
*
* Parses the input stream into the integral variable @a v. It does so
* by calling num_get::do_get().
*
* Parsing is affected by the flag settings in @a io.
*
* The basic parse is affected by the value of io.flags() &
* ios_base::basefield. If equal to ios_base::oct, parses like the
* scanf %o specifier. Else if equal to ios_base::hex, parses like %X
* specifier. Else if basefield equal to 0, parses like the %i
* specifier. Otherwise, parses like %d for signed and %u for unsigned
* types. The matching type length modifier is also used.
*
* Digit grouping is intrepreted according to numpunct::grouping() and
* numpunct::thousands_sep(). If the pattern of digit groups isn't
* consistent, sets err to ios_base::failbit.
*
* If parsing the string yields a valid value for @a v, @a v is set.
* Otherwise, sets err to ios_base::failbit and leaves @a v unaltered.
* Sets err to ios_base::eofbit if the stream is emptied.
*
* @param in Start of input stream.
* @param end End of input stream.
* @param io Source of locale and flags.
* @param err Error flags to set.
* @param v Value to format and insert.
* @return Iterator after reading.
*/
iter_type
get(iter_type __in, iter_type __end, ios_base& __io,
ios_base::iostate& __err, long& __v) const
{ return this->do_get(__in, __end, __io, __err, __v); }
iter_type
get(iter_type __in, iter_type __end, ios_base& __io,
ios_base::iostate& __err, unsigned short& __v) const
{ return this->do_get(__in, __end, __io, __err, __v); }
iter_type
get(iter_type __in, iter_type __end, ios_base& __io,
ios_base::iostate& __err, unsigned int& __v) const
{ return this->do_get(__in, __end, __io, __err, __v); }
iter_type
get(iter_type __in, iter_type __end, ios_base& __io,
ios_base::iostate& __err, unsigned long& __v) const
{ return this->do_get(__in, __end, __io, __err, __v); }
#ifdef _GLIBCXX_USE_LONG_LONG
iter_type
get(iter_type __in, iter_type __end, ios_base& __io,
ios_base::iostate& __err, long long& __v) const
{ return this->do_get(__in, __end, __io, __err, __v); }
iter_type
get(iter_type __in, iter_type __end, ios_base& __io,
ios_base::iostate& __err, unsigned long long& __v) const
{ return this->do_get(__in, __end, __io, __err, __v); }
#endif
//@}
//@{
/**
* @brief Numeric parsing.
*
* Parses the input stream into the integral variable @a v. It does so
* by calling num_get::do_get().
*
* The input characters are parsed like the scanf %g specifier. The
* matching type length modifier is also used.
*
* The decimal point character used is numpunct::decimal_point().
* Digit grouping is intrepreted according to numpunct::grouping() and
* numpunct::thousands_sep(). If the pattern of digit groups isn't
* consistent, sets err to ios_base::failbit.
*
* If parsing the string yields a valid value for @a v, @a v is set.
* Otherwise, sets err to ios_base::failbit and leaves @a v unaltered.
* Sets err to ios_base::eofbit if the stream is emptied.
*
* @param in Start of input stream.
* @param end End of input stream.
* @param io Source of locale and flags.
* @param err Error flags to set.
* @param v Value to format and insert.
* @return Iterator after reading.
*/
iter_type
get(iter_type __in, iter_type __end, ios_base& __io,
ios_base::iostate& __err, float& __v) const
{ return this->do_get(__in, __end, __io, __err, __v); }
iter_type
get(iter_type __in, iter_type __end, ios_base& __io,
ios_base::iostate& __err, double& __v) const
{ return this->do_get(__in, __end, __io, __err, __v); }
iter_type
get(iter_type __in, iter_type __end, ios_base& __io,
ios_base::iostate& __err, long double& __v) const
{ return this->do_get(__in, __end, __io, __err, __v); }
//@}
/**
* @brief Numeric parsing.
*
* Parses the input stream into the pointer variable @a v. It does so
* by calling num_get::do_get().
*
* The input characters are parsed like the scanf %p specifier.
*
* Digit grouping is intrepreted according to numpunct::grouping() and
* numpunct::thousands_sep(). If the pattern of digit groups isn't
* consistent, sets err to ios_base::failbit.
*
* Note that the digit grouping effect for pointers is a bit ambiguous
* in the standard and shouldn't be relied on. See DR 344.
*
* If parsing the string yields a valid value for @a v, @a v is set.
* Otherwise, sets err to ios_base::failbit and leaves @a v unaltered.
* Sets err to ios_base::eofbit if the stream is emptied.
*
* @param in Start of input stream.
* @param end End of input stream.
* @param io Source of locale and flags.
* @param err Error flags to set.
* @param v Value to format and insert.
* @return Iterator after reading.
*/
iter_type
get(iter_type __in, iter_type __end, ios_base& __io,
ios_base::iostate& __err, void*& __v) const
{ return this->do_get(__in, __end, __io, __err, __v); }
protected:
/// Destructor.
virtual ~num_get() { }
iter_type
_M_extract_float(iter_type, iter_type, ios_base&, ios_base::iostate&,
string& __xtrc) const;
template<typename _ValueT>
iter_type
_M_extract_int(iter_type, iter_type, ios_base&, ios_base::iostate&,
_ValueT& __v) const;
template<typename _CharT2>
typename __enable_if<int, __is_char<_CharT2>::__value>::__type
_M_find(const _CharT2*, size_t __len, _CharT2 __c) const
{
int __ret = -1;
if (__len <= 10)
{
if (__c >= _CharT2('0') && __c < _CharT2(_CharT2('0') + __len))
__ret = __c - _CharT2('0');
}
else
{
if (__c >= _CharT2('0') && __c <= _CharT2('9'))
__ret = __c - _CharT2('0');
else if (__c >= _CharT2('a') && __c <= _CharT2('f'))
__ret = 10 + (__c - _CharT2('a'));
else if (__c >= _CharT2('A') && __c <= _CharT2('F'))
__ret = 10 + (__c - _CharT2('A'));
}
return __ret;
}
template<typename _CharT2>
typename __enable_if<int, !__is_char<_CharT2>::__value>::__type
_M_find(const _CharT2* __zero, size_t __len, _CharT2 __c) const
{
int __ret = -1;
const char_type* __q = char_traits<_CharT2>::find(__zero, __len, __c);
if (__q)
{
__ret = __q - __zero;
if (__ret > 15)
__ret -= 6;
}
return __ret;
}
//@{
/**
* @brief Numeric parsing.
*
* Parses the input stream into the variable @a v. This function is a
* hook for derived classes to change the value returned. @see get()
* for more details.
*
* @param in Start of input stream.
* @param end End of input stream.
* @param io Source of locale and flags.
* @param err Error flags to set.
* @param v Value to format and insert.
* @return Iterator after reading.
*/
virtual iter_type
do_get(iter_type, iter_type, ios_base&, ios_base::iostate&, bool&) const;
virtual iter_type
do_get(iter_type, iter_type, ios_base&, ios_base::iostate&, long&) const;
virtual iter_type
do_get(iter_type, iter_type, ios_base&, ios_base::iostate& __err,
unsigned short&) const;
virtual iter_type
do_get(iter_type, iter_type, ios_base&, ios_base::iostate& __err,
unsigned int&) const;
virtual iter_type
do_get(iter_type, iter_type, ios_base&, ios_base::iostate& __err,
unsigned long&) const;
#ifdef _GLIBCXX_USE_LONG_LONG
virtual iter_type
do_get(iter_type, iter_type, ios_base&, ios_base::iostate& __err,
long long&) const;
virtual iter_type
do_get(iter_type, iter_type, ios_base&, ios_base::iostate& __err,
unsigned long long&) const;
#endif
virtual iter_type
do_get(iter_type, iter_type, ios_base&, ios_base::iostate& __err,
float&) const;
virtual iter_type
do_get(iter_type, iter_type, ios_base&, ios_base::iostate& __err,
double&) const;
// XXX GLIBCXX_ABI Deprecated
#if defined _GLIBCXX_LONG_DOUBLE_COMPAT && defined __LONG_DOUBLE_128__
virtual iter_type
__do_get(iter_type, iter_type, ios_base&, ios_base::iostate& __err,
double&) const;
#else
virtual iter_type
do_get(iter_type, iter_type, ios_base&, ios_base::iostate& __err,
long double&) const;
#endif
virtual iter_type
do_get(iter_type, iter_type, ios_base&, ios_base::iostate& __err,
void*&) const;
// XXX GLIBCXX_ABI Deprecated
#if defined _GLIBCXX_LONG_DOUBLE_COMPAT && defined __LONG_DOUBLE_128__
virtual iter_type
do_get(iter_type, iter_type, ios_base&, ios_base::iostate& __err,
long double&) const;
#endif
//@}
};
template<typename _CharT, typename _InIter>
locale::id num_get<_CharT, _InIter>::id;
/**
* @brief Facet for converting numbers to strings.
*
* This facet encapsulates the code to convert a number to a string. It is
* used by the ostream numeric insertion operators.
*
* The num_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 num_put facet.
*/
template<typename _CharT, typename _OutIter>
class num_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
num_put(size_t __refs = 0) : facet(__refs) { }
/**
* @brief Numeric formatting.
*
* Formats the boolean @a v and inserts it into a stream. It does so
* by calling num_put::do_put().
*
* If ios_base::boolalpha is set, writes ctype<CharT>::truename() or
* ctype<CharT>::falsename(). Otherwise formats @a v as an int.
*
* @param s Stream to write to.
* @param io Source of locale and flags.
* @param fill Char_type to use for filling.
* @param v Value to format and insert.
* @return Iterator after writing.
*/
iter_type
put(iter_type __s, ios_base& __f, char_type __fill, bool __v) const
{ return this->do_put(__s, __f, __fill, __v); }
//@{
/**
* @brief Numeric formatting.
*
* Formats the integral value @a v and inserts it into a
* stream. It does so by calling num_put::do_put().
*
* Formatting is affected by the flag settings in @a io.
*
* The basic format is affected by the value of io.flags() &
* ios_base::basefield. If equal to ios_base::oct, formats like the
* printf %o specifier. Else if equal to ios_base::hex, formats like
* %x or %X with ios_base::uppercase unset or set respectively.
* Otherwise, formats like %d, %ld, %lld for signed and %u, %lu, %llu
* for unsigned values. Note that if both oct and hex are set, neither
* will take effect.
*
* If ios_base::showpos is set, '+' is output before positive values.
* If ios_base::showbase is set, '0' precedes octal values (except 0)
* and '0[xX]' precedes hex values.
*
* Thousands separators are inserted according to numpunct::grouping()
* and numpunct::thousands_sep(). The decimal point character used is
* numpunct::decimal_point().
*
* If io.width() is non-zero, enough @a fill characters are inserted to
* make the result at least that wide. If
* (io.flags() & ios_base::adjustfield) == ios_base::left, result is
* padded at the end. If ios_base::internal, then padding occurs
* immediately after either a '+' or '-' or after '0x' or '0X'.
* Otherwise, padding occurs at the beginning.
*
* @param s Stream to write to.
* @param io Source of locale and flags.
* @param fill Char_type to use for filling.
* @param v Value to format and insert.
* @return Iterator after writing.
*/
iter_type
put(iter_type __s, ios_base& __f, char_type __fill, long __v) const
{ return this->do_put(__s, __f, __fill, __v); }
iter_type
put(iter_type __s, ios_base& __f, char_type __fill,
unsigned long __v) const
{ return this->do_put(__s, __f, __fill, __v); }
#ifdef _GLIBCXX_USE_LONG_LONG
iter_type
put(iter_type __s, ios_base& __f, char_type __fill, long long __v) const
{ return this->do_put(__s, __f, __fill, __v); }
iter_type
put(iter_type __s, ios_base& __f, char_type __fill,
unsigned long long __v) const
{ return this->do_put(__s, __f, __fill, __v); }
#endif
//@}
//@{
/**
* @brief Numeric formatting.
*
* Formats the floating point value @a v and inserts it into a stream.
* It does so by calling num_put::do_put().
*
* Formatting is affected by the flag settings in @a io.
*
* The basic format is affected by the value of io.flags() &
* ios_base::floatfield. If equal to ios_base::fixed, formats like the
* printf %f specifier. Else if equal to ios_base::scientific, formats
* like %e or %E with ios_base::uppercase unset or set respectively.
* Otherwise, formats like %g or %G depending on uppercase. Note that
* if both fixed and scientific are set, the effect will also be like
* %g or %G.
*
* The output precision is given by io.precision(). This precision is
* capped at numeric_limits::digits10 + 2 (different for double and
* long double). The default precision is 6.
*
* If ios_base::showpos is set, '+' is output before positive values.
* If ios_base::showpoint is set, a decimal point will always be
* output.
*
* Thousands separators are inserted according to numpunct::grouping()
* and numpunct::thousands_sep(). The decimal point character used is
* numpunct::decimal_point().
*
* If io.width() is non-zero, enough @a fill characters are inserted to
* make the result at least that wide. If
* (io.flags() & ios_base::adjustfield) == ios_base::left, result is
* padded at the end. If ios_base::internal, then padding occurs
* immediately after either a '+' or '-' or after '0x' or '0X'.
* Otherwise, padding occurs at the beginning.
*
* @param s Stream to write to.
* @param io Source of locale and flags.
* @param fill Char_type to use for filling.
* @param v Value to format and insert.
* @return Iterator after writing.
*/
iter_type
put(iter_type __s, ios_base& __f, char_type __fill, double __v) const
{ return this->do_put(__s, __f, __fill, __v); }
iter_type
put(iter_type __s, ios_base& __f, char_type __fill,
long double __v) const
{ return this->do_put(__s, __f, __fill, __v); }
//@}
/**
* @brief Numeric formatting.
*
* Formats the pointer value @a v and inserts it into a stream. It
* does so by calling num_put::do_put().
*
* This function formats @a v as an unsigned long with ios_base::hex
* and ios_base::showbase set.
*
* @param s Stream to write to.
* @param io Source of locale and flags.
* @param fill Char_type to use for filling.
* @param v Value to format and insert.
* @return Iterator after writing.
*/
iter_type
put(iter_type __s, ios_base& __f, char_type __fill,
const void* __v) const
{ return this->do_put(__s, __f, __fill, __v); }
protected:
template<typename _ValueT>
iter_type
_M_insert_float(iter_type, ios_base& __io, char_type __fill,
char __mod, _ValueT __v) const;
void
_M_group_float(const char* __grouping, size_t __grouping_size,
char_type __sep, const char_type* __p, char_type* __new,
char_type* __cs, int& __len) const;
template<typename _ValueT>
iter_type
_M_insert_int(iter_type, ios_base& __io, char_type __fill,
_ValueT __v) const;
void
_M_group_int(const char* __grouping, size_t __grouping_size,
char_type __sep, ios_base& __io, char_type* __new,
char_type* __cs, int& __len) const;
void
_M_pad(char_type __fill, streamsize __w, ios_base& __io,
char_type* __new, const char_type* __cs, int& __len) const;
/// Destructor.
virtual
~num_put() { };
//@{
/**
* @brief Numeric formatting.
*
* These functions do the work of formatting numeric values and
* inserting them into a stream. This function is a hook for derived
* classes to change the value returned.
*
* @param s Stream to write to.
* @param io Source of locale and flags.
* @param fill Char_type to use for filling.
* @param v Value to format and insert.
* @return Iterator after writing.
*/
virtual iter_type
do_put(iter_type, ios_base&, char_type __fill, bool __v) const;
virtual iter_type
do_put(iter_type, ios_base&, char_type __fill, long __v) const;
virtual iter_type
do_put(iter_type, ios_base&, char_type __fill, unsigned long) const;
#ifdef _GLIBCXX_USE_LONG_LONG
virtual iter_type
do_put(iter_type, ios_base&, char_type __fill, long long __v) const;
virtual iter_type
do_put(iter_type, ios_base&, char_type __fill, unsigned long long) const;
#endif
virtual iter_type
do_put(iter_type, ios_base&, char_type __fill, double __v) const;
// XXX GLIBCXX_ABI Deprecated
#if defined _GLIBCXX_LONG_DOUBLE_COMPAT && defined __LONG_DOUBLE_128__
virtual iter_type
__do_put(iter_type, ios_base&, char_type __fill, double __v) const;
#else
virtual iter_type
do_put(iter_type, ios_base&, char_type __fill, long double __v) const;
#endif
virtual iter_type
do_put(iter_type, ios_base&, char_type __fill, const void* __v) const;
// XXX GLIBCXX_ABI Deprecated
#if defined _GLIBCXX_LONG_DOUBLE_COMPAT && defined __LONG_DOUBLE_128__
virtual iter_type
do_put(iter_type, ios_base&, char_type __fill, long double __v) const;
#endif
//@}
};
template <typename _CharT, typename _OutIter>
locale::id num_put<_CharT, _OutIter>::id;
_GLIBCXX_END_LDBL_NAMESPACE
/**
* @brief Facet for localized string comparison.
*
* This facet encapsulates the code to compare strings in a localized
* manner.
*
* The collate 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
* collate facet.
*/
template<typename _CharT>
class collate : public locale::facet
{
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 collate_byname as well.
__c_locale _M_c_locale_collate;
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
collate(size_t __refs = 0)
: facet(__refs), _M_c_locale_collate(_S_get_c_locale())
{ }
/**
* @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 refs Passed to the base facet class.
*/
explicit
collate(__c_locale __cloc, size_t __refs = 0)
: facet(__refs), _M_c_locale_collate(_S_clone_c_locale(__cloc))
{ }
/**
* @brief Compare two strings.
*
* This function compares two strings and returns the result by calling
* collate::do_compare().
*
* @param lo1 Start of string 1.
* @param hi1 End of string 1.
* @param lo2 Start of string 2.
* @param hi2 End of string 2.
* @return 1 if string1 > string2, -1 if string1 < string2, else 0.
*/
int
compare(const _CharT* __lo1, const _CharT* __hi1,
const _CharT* __lo2, const _CharT* __hi2) const
{ return this->do_compare(__lo1, __hi1, __lo2, __hi2); }
/**
* @brief Transform string to comparable form.
*
* This function is a wrapper for strxfrm functionality. It takes the
* input string and returns a modified string that can be directly
* compared to other transformed strings. In the "C" locale, this
* function just returns a copy of the input string. In some other
* locales, it may replace two chars with one, change a char for
* another, etc. It does so by returning collate::do_transform().
*
* @param lo Start of string.
* @param hi End of string.
* @return Transformed string_type.
*/
string_type
transform(const _CharT* __lo, const _CharT* __hi) const
{ return this->do_transform(__lo, __hi); }
/**
* @brief Return hash of a string.
*
* This function computes and returns a hash on the input string. It
* does so by returning collate::do_hash().
*
* @param lo Start of string.
* @param hi End of string.
* @return Hash value.
*/
long
hash(const _CharT* __lo, const _CharT* __hi) const
{ return this->do_hash(__lo, __hi); }
// Used to abstract out _CharT bits in virtual member functions, below.
int
_M_compare(const _CharT*, const _CharT*) const;
size_t
_M_transform(_CharT*, const _CharT*, size_t) const;
protected:
/// Destructor.
virtual
~collate()
{ _S_destroy_c_locale(_M_c_locale_collate); }
/**
* @brief Compare two strings.
*
* This function is a hook for derived classes to change the value
* returned. @see compare().
*
* @param lo1 Start of string 1.
* @param hi1 End of string 1.
* @param lo2 Start of string 2.
* @param hi2 End of string 2.
* @return 1 if string1 > string2, -1 if string1 < string2, else 0.
*/
virtual int
do_compare(const _CharT* __lo1, const _CharT* __hi1,
const _CharT* __lo2, const _CharT* __hi2) const;
/**
* @brief Transform string to comparable form.
*
* This function is a hook for derived classes to change the value
* returned.
*
* @param lo1 Start of string 1.
* @param hi1 End of string 1.
* @param lo2 Start of string 2.
* @param hi2 End of string 2.
* @return 1 if string1 > string2, -1 if string1 < string2, else 0.
*/
virtual string_type
do_transform(const _CharT* __lo, const _CharT* __hi) const;
/**
* @brief Return hash of a string.
*
* This function computes and returns a hash on the input string. This
* function is a hook for derived classes to change the value returned.
*
* @param lo Start of string.
* @param hi End of string.
* @return Hash value.
*/
virtual long
do_hash(const _CharT* __lo, const _CharT* __hi) const;
};
template<typename _CharT>
locale::id collate<_CharT>::id;
// Specializations.
template<>
int
collate<char>::_M_compare(const char*, const char*) const;
template<>
size_t
collate<char>::_M_transform(char*, const char*, size_t) const;
#ifdef _GLIBCXX_USE_WCHAR_T
template<>
int
collate<wchar_t>::_M_compare(const wchar_t*, const wchar_t*) const;
template<>
size_t
collate<wchar_t>::_M_transform(wchar_t*, const wchar_t*, size_t) const;
#endif
/// @brief class collate_byname [22.2.4.2].
template<typename _CharT>
class collate_byname : public collate<_CharT>
{
public:
//@{
/// Public typedefs
typedef _CharT char_type;
typedef basic_string<_CharT> string_type;
//@}
explicit
collate_byname(const char* __s, size_t __refs = 0)
: collate<_CharT>(__refs)
{
if (std::strcmp(__s, "C") != 0 && std::strcmp(__s, "POSIX") != 0)
{
this->_S_destroy_c_locale(this->_M_c_locale_collate);
this->_S_create_c_locale(this->_M_c_locale_collate, __s);
}
}
protected:
virtual
~collate_byname() { }
};
/**
* @brief Time format ordering data.
*
* This class provides an enum representing different orderings of 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(NULL), _M_date_era_format(NULL), _M_time_format(NULL),
_M_time_era_format(NULL), _M_date_time_format(NULL),
_M_date_time_era_format(NULL), _M_am(NULL), _M_pm(NULL),
_M_am_pm_format(NULL), _M_day1(NULL), _M_day2(NULL), _M_day3(NULL),
_M_day4(NULL), _M_day5(NULL), _M_day6(NULL), _M_day7(NULL),
_M_aday1(NULL), _M_aday2(NULL), _M_aday3(NULL), _M_aday4(NULL),
_M_aday5(NULL), _M_aday6(NULL), _M_aday7(NULL), _M_month01(NULL),
_M_month02(NULL), _M_month03(NULL), _M_month04(NULL), _M_month05(NULL),
_M_month06(NULL), _M_month07(NULL), _M_month08(NULL), _M_month09(NULL),
_M_month10(NULL), _M_month11(NULL), _M_month12(NULL), _M_amonth01(NULL),
_M_amonth02(NULL), _M_amonth03(NULL), _M_amonth04(NULL),
_M_amonth05(NULL), _M_amonth06(NULL), _M_amonth07(NULL),
_M_amonth08(NULL), _M_amonth09(NULL), _M_amonth10(NULL),
_M_amonth11(NULL), _M_amonth12(NULL), _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;
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 = NULL);
};
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;
#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;
#endif
// Include host and configuration specific timepunct functions.
#include <bits/time_members.h>
/**
* @brief Facet for parsing dates and times.
*
* 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 "x" given to time_put::put() only
* uses month, day, and year. If the format "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 "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 "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 "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 "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 "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 "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 "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 day or month name, or 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 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;
/// @brief 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 Facet for outputting dates and times.
*
* 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;
/// @brief 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.
*
* 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
static pattern
_S_construct_pattern(char __precedes, char __space, char __posn);
};
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(NULL), _M_grouping_size(0), _M_use_grouping(false),
_M_decimal_point(_CharT()), _M_thousands_sep(_CharT()),
_M_curr_symbol(NULL), _M_curr_symbol_size(0),
_M_positive_sign(NULL), _M_positive_sign_size(0),
_M_negative_sign(NULL), _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 Facet for formatting data for money amounts.
*
* 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(NULL)
{ _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(NULL)
{ _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 "\003\002" and is applied to
* the number 123456789, this corresponds to 12,34,56,789. Note that
* if the string was "32", 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() == '$' positive_sign() ==
* '+', and value 10.01, and options set to force the symbol, the
* corresponding string is "$+10.01".
*
* @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 = NULL,
const char* __name = NULL);
};
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
/// @brief 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 (std::strcmp(__s, "C") != 0 && std::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 Facet for parsing monetary amounts.
*
* 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 "1001" 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 Facet for outputting monetary amounts.
*
* 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 "$10.01" 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 "1001" in
* a US locale would write "$10.01" 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 "$10.01" 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 "1001" in
* a US locale would write "$10.01" 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.
*/
struct messages_base
{
typedef int catalog;
};
/**
* @brief Facet for handling message catalogs
*
* 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
/// @brief 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()
{ }
};
// Include host and configuration specific messages functions.
#include <bits/messages_members.h>
// Subclause convenience interfaces, inlines.
// NB: These are inline because, when used in a loop, some compilers
// can hoist the body out of the loop; then it's just as fast as the
// C is*() function.
/// Convenience interface to ctype.is(ctype_base::space, __c).
template<typename _CharT>
inline bool
isspace(_CharT __c, const locale& __loc)
{ return use_facet<ctype<_CharT> >(__loc).is(ctype_base::space, __c); }
/// Convenience interface to ctype.is(ctype_base::print, __c).
template<typename _CharT>
inline bool
isprint(_CharT __c, const locale& __loc)
{ return use_facet<ctype<_CharT> >(__loc).is(ctype_base::print, __c); }
/// Convenience interface to ctype.is(ctype_base::cntrl, __c).
template<typename _CharT>
inline bool
iscntrl(_CharT __c, const locale& __loc)
{ return use_facet<ctype<_CharT> >(__loc).is(ctype_base::cntrl, __c); }
/// Convenience interface to ctype.is(ctype_base::upper, __c).
template<typename _CharT>
inline bool
isupper(_CharT __c, const locale& __loc)
{ return use_facet<ctype<_CharT> >(__loc).is(ctype_base::upper, __c); }
/// Convenience interface to ctype.is(ctype_base::lower, __c).
template<typename _CharT>
inline bool
islower(_CharT __c, const locale& __loc)
{ return use_facet<ctype<_CharT> >(__loc).is(ctype_base::lower, __c); }
/// Convenience interface to ctype.is(ctype_base::alpha, __c).
template<typename _CharT>
inline bool
isalpha(_CharT __c, const locale& __loc)
{ return use_facet<ctype<_CharT> >(__loc).is(ctype_base::alpha, __c); }
/// Convenience interface to ctype.is(ctype_base::digit, __c).
template<typename _CharT>
inline bool
isdigit(_CharT __c, const locale& __loc)
{ return use_facet<ctype<_CharT> >(__loc).is(ctype_base::digit, __c); }
/// Convenience interface to ctype.is(ctype_base::punct, __c).
template<typename _CharT>
inline bool
ispunct(_CharT __c, const locale& __loc)
{ return use_facet<ctype<_CharT> >(__loc).is(ctype_base::punct, __c); }
/// Convenience interface to ctype.is(ctype_base::xdigit, __c).
template<typename _CharT>
inline bool
isxdigit(_CharT __c, const locale& __loc)
{ return use_facet<ctype<_CharT> >(__loc).is(ctype_base::xdigit, __c); }
/// Convenience interface to ctype.is(ctype_base::alnum, __c).
template<typename _CharT>
inline bool
isalnum(_CharT __c, const locale& __loc)
{ return use_facet<ctype<_CharT> >(__loc).is(ctype_base::alnum, __c); }
/// Convenience interface to ctype.is(ctype_base::graph, __c).
template<typename _CharT>
inline bool
isgraph(_CharT __c, const locale& __loc)
{ return use_facet<ctype<_CharT> >(__loc).is(ctype_base::graph, __c); }
/// Convenience interface to ctype.toupper(__c).
template<typename _CharT>
inline _CharT
toupper(_CharT __c, const locale& __loc)
{ return use_facet<ctype<_CharT> >(__loc).toupper(__c); }
/// Convenience interface to ctype.tolower(__c).
template<typename _CharT>
inline _CharT
tolower(_CharT __c, const locale& __loc)
{ return use_facet<ctype<_CharT> >(__loc).tolower(__c); }
_GLIBCXX_END_NAMESPACE
#endif
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