locale_facets.tcc

00001 // Locale support -*- C++ -*-
00002 
00003 // Copyright (C) 1997, 1998, 1999, 2000, 2001, 2002
00004 // Free Software Foundation, Inc.
00005 //
00006 // This file is part of the GNU ISO C++ Library.  This library is free
00007 // software; you can redistribute it and/or modify it under the
00008 // terms of the GNU General Public License as published by the
00009 // Free Software Foundation; either version 2, or (at your option)
00010 // any later version.
00011 
00012 // This library is distributed in the hope that it will be useful,
00013 // but WITHOUT ANY WARRANTY; without even the implied warranty of
00014 // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
00015 // GNU General Public License for more details.
00016 
00017 // You should have received a copy of the GNU General Public License along
00018 // with this library; see the file COPYING.  If not, write to the Free
00019 // Software Foundation, 59 Temple Place - Suite 330, Boston, MA 02111-1307,
00020 // USA.
00021 
00022 // As a special exception, you may use this file as part of a free software
00023 // library without restriction.  Specifically, if other files instantiate
00024 // templates or use macros or inline functions from this file, or you compile
00025 // this file and link it with other files to produce an executable, this
00026 // file does not by itself cause the resulting executable to be covered by
00027 // the GNU General Public License.  This exception does not however
00028 // invalidate any other reasons why the executable file might be covered by
00029 // the GNU General Public License.
00030 
00031 // Warning: this file is not meant for user inclusion. Use <locale>.
00032 
00033 #ifndef _CPP_BITS_LOCFACETS_TCC
00034 #define _CPP_BITS_LOCFACETS_TCC 1
00035 
00036 #pragma GCC system_header
00037 
00038 #include <cerrno>
00039 #include <clocale>   // For localeconv
00040 #include <cstdlib>   // For strof, strtold
00041 #include <cmath>     // For ceil
00042 #include <cctype>    // For isspace
00043 #include <limits>    // For numeric_limits
00044 #include <bits/streambuf_iterator.h>
00045 #include <typeinfo>  // For bad_cast.
00046 
00047 namespace std
00048 {
00049   template<typename _Facet>
00050     locale
00051     locale::combine(const locale& __other) const
00052     {
00053       _Impl* __tmp = new _Impl(*_M_impl, 1);
00054       __tmp->_M_replace_facet(__other._M_impl, &_Facet::id);
00055       return locale(__tmp);
00056     }
00057 
00058   template<typename _CharT, typename _Traits, typename _Alloc>
00059     bool
00060     locale::operator()(const basic_string<_CharT, _Traits, _Alloc>& __s1,
00061                        const basic_string<_CharT, _Traits, _Alloc>& __s2) const
00062     {
00063       typedef std::collate<_CharT> __collate_type;
00064       const __collate_type& __collate = use_facet<__collate_type>(*this);
00065       return (__collate.compare(__s1.data(), __s1.data() + __s1.length(),
00066                 __s2.data(), __s2.data() + __s2.length()) < 0);
00067     }
00068 
00069   template<typename _Facet>
00070     const _Facet&
00071     use_facet(const locale& __loc)
00072     {
00073       size_t __i = _Facet::id._M_id();
00074       locale::facet** __facets = __loc._M_impl->_M_facets;
00075       if (!(__i < __loc._M_impl->_M_facets_size && __facets[__i]))
00076         __throw_bad_cast();
00077       return static_cast<const _Facet&>(*__facets[__i]);
00078     }
00079 
00080   template<typename _Facet>
00081     bool
00082     has_facet(const locale& __loc) throw()
00083     {
00084       size_t __i = _Facet::id._M_id();
00085       locale::facet** __facets = __loc._M_impl->_M_facets;
00086       return (__i < __loc._M_impl->_M_facets_size && __facets[__i]);
00087     }
00088 
00089 
00090   // Stage 1: Determine a conversion specifier.
00091   template<typename _CharT, typename _InIter>
00092     _InIter
00093     num_get<_CharT, _InIter>::
00094     _M_extract_float(_InIter __beg, _InIter __end, ios_base& __io,
00095              ios_base::iostate& __err, string& __xtrc) const
00096     {
00097       typedef char_traits<_CharT>       __traits_type;
00098       const locale __loc = __io.getloc();
00099       const ctype<_CharT>& __ctype = use_facet<ctype<_CharT> >(__loc);
00100       const numpunct<_CharT>& __np = use_facet<numpunct<_CharT> >(__loc);
00101 
00102       // First check for sign.
00103       const char_type __plus = __ctype.widen('+');
00104       const char_type __minus = __ctype.widen('-');
00105       int __pos = 0;
00106       char_type  __c = *__beg;
00107       if ((__traits_type::eq(__c, __plus) || __traits_type::eq(__c, __minus))
00108       && __beg != __end)
00109     {
00110       __xtrc += __ctype.narrow(__c, char());
00111       ++__pos;
00112       __c = *(++__beg);
00113     }
00114 
00115       // Next, strip leading zeros.
00116       const char_type __zero = __ctype.widen(_S_atoms[_M_zero]);
00117       bool __found_zero = false;
00118       while (__traits_type::eq(__c, __zero) && __beg != __end)
00119     {
00120       __c = *(++__beg);
00121       __found_zero = true;
00122     }
00123       if (__found_zero)
00124     {
00125       __xtrc += _S_atoms[_M_zero];
00126       ++__pos;
00127     }
00128 
00129       // Only need acceptable digits for floating point numbers.
00130       const size_t __len = _M_E - _M_zero + 1;
00131       char_type  __watoms[__len];
00132       __ctype.widen(_S_atoms, _S_atoms + __len, __watoms);
00133       bool __found_dec = false;
00134       bool __found_sci = false;
00135       const char_type __dec = __np.decimal_point();
00136 
00137       string __found_grouping;
00138       const string __grouping = __np.grouping();
00139       bool __check_grouping = __grouping.size();
00140       int __sep_pos = 0;
00141       const char_type __sep = __np.thousands_sep();
00142 
00143       while (__beg != __end)
00144         {
00145       // Only look in digits.
00146           const char_type* __p = __traits_type::find(__watoms, 10,  __c);
00147 
00148           // NB: strchr returns true for __c == 0x0
00149           if (__p && !__traits_type::eq(__c, char_type()))
00150         {
00151           // Try first for acceptable digit; record it if found.
00152           ++__pos;
00153           __xtrc += _S_atoms[__p - __watoms];
00154           ++__sep_pos;
00155           __c = *(++__beg);
00156         }
00157           else if (__traits_type::eq(__c, __sep) 
00158            && __check_grouping && !__found_dec)
00159         {
00160               // NB: Thousands separator at the beginning of a string
00161               // is a no-no, as is two consecutive thousands separators.
00162               if (__sep_pos)
00163                 {
00164                   __found_grouping += static_cast<char>(__sep_pos);
00165                   __sep_pos = 0;
00166           __c = *(++__beg);
00167                 }
00168               else
00169         {
00170           __err |= ios_base::failbit;
00171           break;
00172         }
00173             }
00174       else if (__traits_type::eq(__c, __dec) && !__found_dec)
00175         {
00176           // According to the standard, if no grouping chars are seen,
00177           // no grouping check is applied. Therefore __found_grouping
00178           // must be adjusted only if __dec comes after some __sep.
00179           if (__found_grouping.size())
00180         __found_grouping += static_cast<char>(__sep_pos);
00181           ++__pos;
00182           __xtrc += '.';
00183           __c = *(++__beg);
00184           __found_dec = true;
00185         }
00186       else if ((__traits_type::eq(__c, __watoms[_M_e]) 
00187             || __traits_type::eq(__c, __watoms[_M_E])) 
00188            && !__found_sci && __pos)
00189         {
00190           // Scientific notation.
00191           ++__pos;
00192           __xtrc += __ctype.narrow(__c, char());
00193           __c = *(++__beg);
00194 
00195           // Remove optional plus or minus sign, if they exist.
00196           if (__traits_type::eq(__c, __plus) 
00197           || __traits_type::eq(__c, __minus))
00198         {
00199           ++__pos;
00200           __xtrc += __ctype.narrow(__c, char());
00201           __c = *(++__beg);
00202         }
00203           __found_sci = true;
00204         }
00205       else
00206         // Not a valid input item.
00207         break;
00208         }
00209 
00210       // Digit grouping is checked. If grouping and found_grouping don't
00211       // match, then get very very upset, and set failbit.
00212       if (__check_grouping && __found_grouping.size())
00213         {
00214           // Add the ending grouping if a decimal wasn't found.
00215       if (!__found_dec)
00216         __found_grouping += static_cast<char>(__sep_pos);
00217           if (!__verify_grouping(__grouping, __found_grouping))
00218         __err |= ios_base::failbit;
00219         }
00220 
00221       // Finish up
00222       __xtrc += char();
00223       if (__beg == __end)
00224         __err |= ios_base::eofbit;
00225       return __beg;
00226     }
00227 
00228   // Stage 1: Determine a conversion specifier.
00229   template<typename _CharT, typename _InIter>
00230     _InIter
00231     num_get<_CharT, _InIter>::
00232     _M_extract_int(_InIter __beg, _InIter __end, ios_base& __io,
00233            ios_base::iostate& __err, string& __xtrc, int& __base) const
00234     {
00235       typedef char_traits<_CharT>       __traits_type;
00236       const locale __loc = __io.getloc();
00237       const ctype<_CharT>& __ctype = use_facet<ctype<_CharT> >(__loc);
00238       const numpunct<_CharT>& __np = use_facet<numpunct<_CharT> >(__loc);
00239  
00240       // NB: Iff __basefield == 0, this can change based on contents.
00241       ios_base::fmtflags __basefield = __io.flags() & ios_base::basefield;
00242       if (__basefield == ios_base::oct)
00243         __base = 8;
00244       else if (__basefield == ios_base::hex)
00245         __base = 16;
00246       else
00247     __base = 10;
00248 
00249       // First check for sign.
00250       int __pos = 0;
00251       char_type  __c = *__beg;
00252       const char_type __plus = __ctype.widen('+');
00253       const char_type __minus = __ctype.widen('-');
00254 
00255       if ((__traits_type::eq(__c, __plus) || __traits_type::eq(__c, __minus))
00256       && __beg != __end)
00257     {
00258       __xtrc += __ctype.narrow(__c, char());
00259       ++__pos;
00260       __c = *(++__beg);
00261     }
00262 
00263       // Next, strip leading zeros and check required digits for base formats.
00264       const char_type __zero = __ctype.widen(_S_atoms[_M_zero]);
00265       const char_type __x = __ctype.widen('x');
00266       const char_type __X = __ctype.widen('X');
00267       if (__base == 10)
00268     {
00269       bool __found_zero = false;
00270       while (__traits_type::eq(__c, __zero) && __beg != __end)
00271         {
00272           __c = *(++__beg);
00273           __found_zero = true;
00274         }
00275       if (__found_zero)
00276         {
00277           __xtrc += _S_atoms[_M_zero];
00278           ++__pos;
00279           if (__basefield == 0)
00280         {         
00281           if ((__traits_type::eq(__c, __x) 
00282                || __traits_type::eq(__c, __X))
00283               && __beg != __end)
00284             {
00285               __xtrc += __ctype.narrow(__c, char());
00286               ++__pos;
00287               __c = *(++__beg);
00288               __base = 16;
00289             }
00290           else 
00291             __base = 8;
00292         }
00293         }
00294     }
00295       else if (__base == 16)
00296     {
00297       if (__traits_type::eq(__c, __zero) && __beg != __end)
00298         {
00299           __xtrc += _S_atoms[_M_zero];
00300           ++__pos;
00301           __c = *(++__beg); 
00302           if ((__traits_type::eq(__c, __x) || __traits_type::eq(__c, __X))
00303           && __beg != __end)
00304         {
00305           __xtrc += __ctype.narrow(__c, char());
00306           ++__pos;
00307           __c = *(++__beg);
00308         }
00309         }
00310     }
00311 
00312       // At this point, base is determined. If not hex, only allow
00313       // base digits as valid input.
00314       size_t __len;
00315       if (__base == 16)
00316     __len = _M_size;
00317       else
00318     __len = __base;
00319 
00320       // Extract.
00321       char_type __watoms[_M_size];
00322       __ctype.widen(_S_atoms, _S_atoms + __len, __watoms);
00323       string __found_grouping;
00324       const string __grouping = __np.grouping();
00325       bool __check_grouping = __grouping.size();
00326       int __sep_pos = 0;
00327       const char_type __sep = __np.thousands_sep();
00328       while (__beg != __end)
00329         {
00330           const char_type* __p = __traits_type::find(__watoms, __len,  __c);
00331 
00332           // NB: strchr returns true for __c == 0x0
00333           if (__p && !__traits_type::eq(__c, char_type()))
00334         {
00335           // Try first for acceptable digit; record it if found.
00336           __xtrc += _S_atoms[__p - __watoms];
00337           ++__pos;
00338           ++__sep_pos;
00339           __c = *(++__beg);
00340         }
00341           else if (__traits_type::eq(__c, __sep) && __check_grouping)
00342         {
00343               // NB: Thousands separator at the beginning of a string
00344               // is a no-no, as is two consecutive thousands separators.
00345               if (__sep_pos)
00346                 {
00347                   __found_grouping += static_cast<char>(__sep_pos);
00348                   __sep_pos = 0;
00349           __c = *(++__beg);
00350                 }
00351               else
00352         {
00353           __err |= ios_base::failbit;
00354           break;
00355         }
00356             }
00357       else
00358         // Not a valid input item.
00359         break;
00360         }
00361 
00362       // Digit grouping is checked. If grouping and found_grouping don't
00363       // match, then get very very upset, and set failbit.
00364       if (__check_grouping && __found_grouping.size())
00365         {
00366           // Add the ending grouping.
00367           __found_grouping += static_cast<char>(__sep_pos);
00368           if (!__verify_grouping(__grouping, __found_grouping))
00369         __err |= ios_base::failbit;
00370         }
00371 
00372       // Finish up.
00373       __xtrc += char();
00374       if (__beg == __end)
00375         __err |= ios_base::eofbit;
00376       return __beg;
00377     }
00378 
00379 #ifdef _GLIBCPP_RESOLVE_LIB_DEFECTS
00380   //17.  Bad bool parsing
00381   template<typename _CharT, typename _InIter>
00382     _InIter
00383     num_get<_CharT, _InIter>::
00384     do_get(iter_type __beg, iter_type __end, ios_base& __io,
00385            ios_base::iostate& __err, bool& __v) const
00386     {
00387       // Parse bool values as unsigned long
00388       if (!(__io.flags() & ios_base::boolalpha))
00389         {
00390           // NB: We can't just call do_get(long) here, as it might
00391           // refer to a derived class.
00392           string __xtrc;
00393           int __base;
00394           __beg = _M_extract_int(__beg, __end, __io, __err, __xtrc, __base);
00395 
00396       unsigned long __ul; 
00397       __convert_to_v(__xtrc.c_str(), __ul, __err, _S_c_locale, __base);
00398       if (!(__err & ios_base::failbit) && __ul <= 1)
00399         __v = __ul;
00400       else 
00401             __err |= ios_base::failbit;
00402         }
00403 
00404       // Parse bool values as alphanumeric
00405       else
00406         {
00407       typedef char_traits<_CharT>           __traits_type;
00408       typedef basic_string<_CharT>      __string_type;
00409 
00410           locale __loc = __io.getloc();
00411       const numpunct<_CharT>& __np = use_facet<numpunct<_CharT> >(__loc); 
00412       const __string_type __true = __np.truename();
00413       const __string_type __false = __np.falsename();
00414           const char_type* __trues = __true.c_str();
00415           const char_type* __falses = __false.c_str();
00416           const size_t __truen =  __true.size() - 1;
00417           const size_t __falsen =  __false.size() - 1;
00418 
00419           for (size_t __n = 0; __beg != __end; ++__n)
00420             {
00421               char_type __c = *__beg++;
00422               bool __testf = __n <= __falsen 
00423                      ? __traits_type::eq(__c, __falses[__n]) : false;
00424               bool __testt = __n <= __truen 
00425                      ? __traits_type::eq(__c, __trues[__n]) : false;
00426               if (!(__testf || __testt))
00427                 {
00428                   __err |= ios_base::failbit;
00429                   break;
00430                 }
00431               else if (__testf && __n == __falsen)
00432                 {
00433                   __v = 0;
00434                   break;
00435                 }
00436               else if (__testt && __n == __truen)
00437                 {
00438                   __v = 1;
00439                   break;
00440                 }
00441             }
00442           if (__beg == __end)
00443             __err |= ios_base::eofbit;
00444         }
00445       return __beg;
00446     }
00447 #endif
00448 
00449   template<typename _CharT, typename _InIter>
00450     _InIter
00451     num_get<_CharT, _InIter>::
00452     do_get(iter_type __beg, iter_type __end, ios_base& __io,
00453            ios_base::iostate& __err, long& __v) const
00454     {
00455       string __xtrc;
00456       int __base;
00457       __beg = _M_extract_int(__beg, __end, __io, __err, __xtrc, __base);
00458       __convert_to_v(__xtrc.c_str(), __v, __err, _S_c_locale, __base);
00459       return __beg;
00460     }
00461 
00462   template<typename _CharT, typename _InIter>
00463     _InIter
00464     num_get<_CharT, _InIter>::
00465     do_get(iter_type __beg, iter_type __end, ios_base& __io,
00466            ios_base::iostate& __err, unsigned short& __v) const
00467     {
00468       string __xtrc;
00469       int __base;
00470       __beg = _M_extract_int(__beg, __end, __io, __err, __xtrc, __base);
00471       unsigned long __ul;
00472       __convert_to_v(__xtrc.c_str(), __ul, __err, _S_c_locale, __base);
00473       if (!(__err & ios_base::failbit) 
00474       && __ul <= numeric_limits<unsigned short>::max())
00475     __v = static_cast<unsigned short>(__ul);
00476       else 
00477     __err |= ios_base::failbit;
00478       return __beg;
00479     }
00480 
00481   template<typename _CharT, typename _InIter>
00482     _InIter
00483     num_get<_CharT, _InIter>::
00484     do_get(iter_type __beg, iter_type __end, ios_base& __io,
00485            ios_base::iostate& __err, unsigned int& __v) const
00486     {
00487       string __xtrc;
00488       int __base;
00489       __beg = _M_extract_int(__beg, __end, __io, __err, __xtrc, __base);
00490       unsigned long __ul;
00491       __convert_to_v(__xtrc.c_str(), __ul, __err, _S_c_locale, __base);
00492       if (!(__err & ios_base::failbit) 
00493       && __ul <= numeric_limits<unsigned int>::max())
00494     __v = static_cast<unsigned int>(__ul);
00495       else 
00496     __err |= ios_base::failbit;
00497       return __beg;
00498     }
00499 
00500   template<typename _CharT, typename _InIter>
00501     _InIter
00502     num_get<_CharT, _InIter>::
00503     do_get(iter_type __beg, iter_type __end, ios_base& __io,
00504            ios_base::iostate& __err, unsigned long& __v) const
00505     {
00506       string __xtrc;
00507       int __base;
00508       __beg = _M_extract_int(__beg, __end, __io, __err, __xtrc, __base);
00509       __convert_to_v(__xtrc.c_str(), __v, __err, _S_c_locale, __base);
00510       return __beg;
00511     }
00512 
00513 #ifdef _GLIBCPP_USE_LONG_LONG
00514   template<typename _CharT, typename _InIter>
00515     _InIter
00516     num_get<_CharT, _InIter>::
00517     do_get(iter_type __beg, iter_type __end, ios_base& __io,
00518            ios_base::iostate& __err, long long& __v) const
00519     {
00520       string __xtrc;
00521       int __base;
00522       __beg = _M_extract_int(__beg, __end, __io, __err, __xtrc, __base);
00523       __convert_to_v(__xtrc.c_str(), __v, __err, _S_c_locale, __base);
00524       return __beg;
00525     }
00526 
00527   template<typename _CharT, typename _InIter>
00528     _InIter
00529     num_get<_CharT, _InIter>::
00530     do_get(iter_type __beg, iter_type __end, ios_base& __io,
00531            ios_base::iostate& __err, unsigned long long& __v) const
00532     {
00533       string __xtrc;
00534       int __base;
00535       __beg = _M_extract_int(__beg, __end, __io, __err, __xtrc, __base);
00536       __convert_to_v(__xtrc.c_str(), __v, __err, _S_c_locale, __base);
00537       return __beg;
00538     }
00539 #endif
00540 
00541   template<typename _CharT, typename _InIter>
00542     _InIter
00543     num_get<_CharT, _InIter>::
00544     do_get(iter_type __beg, iter_type __end, ios_base& __io, 
00545        ios_base::iostate& __err, float& __v) const
00546     {
00547       string __xtrc;
00548       __xtrc.reserve(32);
00549       __beg = _M_extract_float(__beg, __end, __io, __err, __xtrc);
00550       __convert_to_v(__xtrc.c_str(), __v, __err, _S_c_locale);
00551       return __beg;
00552     }
00553 
00554   template<typename _CharT, typename _InIter>
00555     _InIter
00556     num_get<_CharT, _InIter>::
00557     do_get(iter_type __beg, iter_type __end, ios_base& __io,
00558            ios_base::iostate& __err, double& __v) const
00559     {
00560       string __xtrc;
00561       __xtrc.reserve(32);
00562       __beg = _M_extract_float(__beg, __end, __io, __err, __xtrc);
00563       __convert_to_v(__xtrc.c_str(), __v, __err, _S_c_locale);
00564       return __beg;
00565     }
00566 
00567   template<typename _CharT, typename _InIter>
00568     _InIter
00569     num_get<_CharT, _InIter>::
00570     do_get(iter_type __beg, iter_type __end, ios_base& __io,
00571            ios_base::iostate& __err, long double& __v) const
00572     {
00573       string __xtrc;
00574       __xtrc.reserve(32);
00575       __beg = _M_extract_float(__beg, __end, __io, __err, __xtrc);
00576       __convert_to_v(__xtrc.c_str(), __v, __err, _S_c_locale);
00577       return __beg;
00578     }
00579 
00580   template<typename _CharT, typename _InIter>
00581     _InIter
00582     num_get<_CharT, _InIter>::
00583     do_get(iter_type __beg, iter_type __end, ios_base& __io,
00584            ios_base::iostate& __err, void*& __v) const
00585     {
00586       // Prepare for hex formatted input
00587       typedef ios_base::fmtflags        fmtflags;
00588       fmtflags __fmt = __io.flags();
00589       fmtflags __fmtmask = ~(ios_base::showpos | ios_base::basefield
00590                              | ios_base::uppercase | ios_base::internal);
00591       __io.flags(__fmt & __fmtmask | (ios_base::hex | ios_base::showbase));
00592 
00593       string __xtrc;
00594       int __base;
00595       __beg = _M_extract_int(__beg, __end, __io, __err, __xtrc, __base);
00596 
00597       // Reset from hex formatted input
00598       __io.flags(__fmt);
00599 
00600       unsigned long __ul;
00601       __convert_to_v(__xtrc.c_str(), __ul, __err, _S_c_locale, __base);
00602       if (!(__err & ios_base::failbit))
00603     __v = reinterpret_cast<void*>(__ul);
00604       else 
00605     __err |= ios_base::failbit;
00606       return __beg;
00607     }
00608 
00609   // The following code uses snprintf (or sprintf(), when _GLIBCPP_USE_C99
00610   // is not defined) to convert floating point values for insertion into a
00611   // stream.  An optimization would be to replace them with code that works
00612   // directly on a wide buffer and then use __pad to do the padding.
00613   // It would be good to replace them anyway to gain back the efficiency
00614   // that C++ provides by knowing up front the type of the values to insert.
00615   // Also, sprintf is dangerous since may lead to accidental buffer overruns.
00616   // This implementation follows the C++ standard fairly directly as
00617   // outlined in 22.2.2.2 [lib.locale.num.put]
00618   template<typename _CharT, typename _OutIter>
00619     template<typename _ValueT>
00620       _OutIter
00621       num_put<_CharT, _OutIter>::
00622       _M_convert_float(_OutIter __s, ios_base& __io, _CharT __fill, char __mod,
00623                _ValueT __v) const
00624       {
00625     // Note: digits10 is rounded down.  We need to add 1 to ensure
00626     // we get the full available precision.
00627     const int __max_digits = numeric_limits<_ValueT>::digits10 + 1;
00628     streamsize __prec = __io.precision();
00629 
00630     if (__prec > static_cast<streamsize>(__max_digits))
00631       __prec = static_cast<streamsize>(__max_digits);
00632 
00633     // Long enough for the max format spec.
00634     char __fbuf[16];
00635 
00636     // [22.2.2.2.2] Stage 1, numeric conversion to character.
00637     int __len;
00638 #ifdef _GLIBCPP_USE_C99
00639     // First try a buffer perhaps big enough (for sure sufficient for
00640     // non-ios_base::fixed outputs)
00641     int __cs_size = __max_digits * 3;
00642     char* __cs = static_cast<char*>(__builtin_alloca(__cs_size));
00643 
00644     const bool __fp = _S_format_float(__io, __fbuf, __mod, __prec);
00645     if (__fp)
00646       __len = __convert_from_v(__cs, __cs_size, __fbuf, __v, 
00647                    _S_c_locale, __prec);
00648     else
00649       __len = __convert_from_v(__cs, __cs_size, __fbuf, __v, _S_c_locale);
00650 
00651     // If the buffer was not large enough, try again with the correct size.
00652     if (__len >= __cs_size)
00653       {
00654         __cs_size = __len + 1; 
00655         __cs = static_cast<char*>(__builtin_alloca(__cs_size));
00656         if (__fp)
00657           __len = __convert_from_v(__cs, __cs_size, __fbuf, __v, 
00658                        _S_c_locale, __prec);
00659         else
00660           __len = __convert_from_v(__cs, __cs_size, __fbuf, __v, 
00661                        _S_c_locale);
00662       }
00663 #else
00664     // Consider the possibility of long ios_base::fixed outputs
00665     const bool __fixed = __io.flags() & ios_base::fixed;
00666     const int __max_exp = numeric_limits<_ValueT>::max_exponent10;
00667     // ios_base::fixed outputs may need up to __max_exp+1 chars
00668     // for the integer part + up to __max_digits chars for the
00669     // fractional part + 3 chars for sign, decimal point, '\0'. On
00670     // the other hand, for non-fixed outputs __max_digits*3 chars
00671     // are largely sufficient.
00672     const int __cs_size = __fixed ? __max_exp + __max_digits + 4 
00673                                   : __max_digits * 3;
00674     char* __cs = static_cast<char*>(__builtin_alloca(__cs_size));
00675 
00676     if (_S_format_float(__io, __fbuf, __mod, __prec))
00677       __len = __convert_from_v(__cs, 0, __fbuf, __v, _S_c_locale, __prec);
00678     else
00679       __len = __convert_from_v(__cs, 0, __fbuf, __v, _S_c_locale);
00680 #endif
00681     return _M_widen_float(__s, __io, __fill, __cs, __len);
00682       }
00683 
00684   template<typename _CharT, typename _OutIter>
00685     template<typename _ValueT>
00686       _OutIter
00687       num_put<_CharT, _OutIter>::
00688       _M_convert_int(_OutIter __s, ios_base& __io, _CharT __fill, char __mod,
00689              char __modl, _ValueT __v) const
00690       {
00691     // [22.2.2.2.2] Stage 1, numeric conversion to character.
00692 
00693     // Long enough for the max format spec.
00694     char __fbuf[16];
00695     _S_format_int(__io, __fbuf, __mod, __modl);
00696 #ifdef _GLIBCPP_USE_C99
00697     // First try a buffer perhaps big enough.
00698     int __cs_size = 64;
00699     char* __cs = static_cast<char*>(__builtin_alloca(__cs_size));
00700     int __len = __convert_from_v(__cs, __cs_size, __fbuf, __v, 
00701                      _S_c_locale);
00702     // If the buffer was not large enough, try again with the correct size.
00703     if (__len >= __cs_size)
00704       {
00705         __cs_size = __len + 1;
00706         __cs = static_cast<char*>(__builtin_alloca(__cs_size));
00707         __len = __convert_from_v(__cs, __cs_size, __fbuf, __v, 
00708                      _S_c_locale);
00709       }
00710 #else
00711     // Leave room for "+/-," "0x," and commas. This size is
00712     // arbitrary, but should be largely sufficient.
00713     char __cs[128];
00714     int __len = __convert_from_v(__cs, 0, __fbuf, __v, _S_c_locale);
00715 #endif
00716     return _M_widen_int(__s, __io, __fill, __cs, __len);
00717       }
00718 
00719   template<typename _CharT, typename _OutIter>
00720     _OutIter
00721     num_put<_CharT, _OutIter>::
00722     _M_widen_float(_OutIter __s, ios_base& __io, _CharT __fill, char* __cs, 
00723            int __len) const
00724     {
00725       typedef char_traits<_CharT>       __traits_type;
00726       // [22.2.2.2.2] Stage 2, convert to char_type, using correct
00727       // numpunct.decimal_point() values for '.' and adding grouping.
00728       const locale __loc = __io.getloc();
00729       const ctype<_CharT>& __ctype = use_facet<ctype<_CharT> >(__loc);
00730       _CharT* __ws = static_cast<_CharT*>(__builtin_alloca(sizeof(_CharT) 
00731                                * __len));
00732       // Grouping can add (almost) as many separators as the number of
00733       // digits, but no more.
00734       _CharT* __ws2 = static_cast<_CharT*>(__builtin_alloca(sizeof(_CharT) 
00735                                 * __len * 2));
00736       __ctype.widen(__cs, __cs + __len, __ws);
00737       
00738       // Replace decimal point.
00739       const _CharT* __p;
00740       const numpunct<_CharT>& __np = use_facet<numpunct<_CharT> >(__loc);
00741       if (__p = __traits_type::find(__ws, __len, __ctype.widen('.')))
00742     __ws[__p - __ws] = __np.decimal_point();
00743 
00744 #ifdef _GLIBCPP_RESOLVE_LIB_DEFECTS
00745 //282. What types does numpunct grouping refer to?
00746       // Add grouping, if necessary. 
00747       const string __grouping = __np.grouping();
00748       ios_base::fmtflags __basefield = __io.flags() & ios_base::basefield;
00749       if (__grouping.size())
00750     {
00751       _CharT* __p2;
00752       int __declen = __p ? __p - __ws : __len;
00753       __p2 = __add_grouping(__ws2, __np.thousands_sep(), 
00754                 __grouping.c_str(),
00755                 __grouping.c_str() + __grouping.size(),
00756                 __ws, __ws + __declen);
00757       int __newlen = __p2 - __ws2;
00758     
00759       // Tack on decimal part.
00760       if (__p)
00761         {
00762           __traits_type::copy(__p2, __p, __len - __declen);
00763           __newlen += __len - __declen;
00764         }    
00765 
00766       // Switch strings, establish correct new length.
00767       __ws = __ws2;
00768       __len = __newlen;
00769     }
00770 #endif
00771       return _M_insert(__s, __io, __fill, __ws, __len);
00772     }
00773 
00774   template<typename _CharT, typename _OutIter>
00775     _OutIter
00776     num_put<_CharT, _OutIter>::
00777     _M_widen_int(_OutIter __s, ios_base& __io, _CharT __fill, char* __cs, 
00778          int __len) const
00779     {
00780       // [22.2.2.2.2] Stage 2, convert to char_type, using correct
00781       // numpunct.decimal_point() values for '.' and adding grouping.
00782       const locale __loc = __io.getloc();
00783       const ctype<_CharT>& __ctype = use_facet<ctype<_CharT> >(__loc);
00784       _CharT* __ws = static_cast<_CharT*>(__builtin_alloca(sizeof(_CharT) 
00785                                * __len));
00786       // Grouping can add (almost) as many separators as the number of
00787       // digits, but no more.
00788       _CharT* __ws2 = static_cast<_CharT*>(__builtin_alloca(sizeof(_CharT) 
00789                                 * __len * 2));
00790       __ctype.widen(__cs, __cs + __len, __ws);
00791 
00792       // Add grouping, if necessary. 
00793       const numpunct<_CharT>& __np = use_facet<numpunct<_CharT> >(__loc);
00794       const string __grouping = __np.grouping();
00795       const ios_base::fmtflags __basefield = __io.flags() & ios_base::basefield;
00796       if (__grouping.size())
00797     {
00798       // By itself __add_grouping cannot deal correctly with __ws when
00799       // ios::showbase is set and ios_base::oct || ios_base::hex.
00800       // Therefore we take care "by hand" of the initial 0, 0x or 0X.
00801       // However, remember that the latter do not occur if the number
00802       // printed is '0' (__len == 1).
00803       streamsize __off = 0;
00804       if ((__io.flags() & ios_base::showbase) && __len > 1)
00805         if (__basefield == ios_base::oct)
00806           {
00807         __off = 1;
00808         *__ws2 = *__ws;
00809           }
00810         else if (__basefield == ios_base::hex)
00811           {
00812         __off = 2;
00813         *__ws2 = *__ws;
00814         *(__ws2 + 1) = *(__ws + 1);
00815           }
00816       _CharT* __p;
00817       __p = __add_grouping(__ws2 + __off, __np.thousands_sep(), 
00818                    __grouping.c_str(),
00819                    __grouping.c_str() + __grouping.size(),
00820                    __ws + __off, __ws + __len);
00821       __len = __p - __ws2;
00822       // Switch strings.
00823       __ws = __ws2;
00824     }
00825       return _M_insert(__s, __io, __fill, __ws, __len);
00826     }
00827 
00828   // For use by integer and floating-point types after they have been
00829   // converted into a char_type string.
00830   template<typename _CharT, typename _OutIter>
00831     _OutIter
00832     num_put<_CharT, _OutIter>::
00833     _M_insert(_OutIter __s, ios_base& __io, _CharT __fill, const _CharT* __ws, 
00834           int __len) const
00835     {
00836       typedef char_traits<_CharT>       __traits_type;
00837       // [22.2.2.2.2] Stage 3.
00838       streamsize __w = __io.width();
00839       _CharT* __ws2 = static_cast<_CharT*>(__builtin_alloca(sizeof(_CharT) 
00840                                 * __w));
00841       if (__w > static_cast<streamsize>(__len))
00842     {
00843       __pad<_CharT, __traits_type>::_S_pad(__io, __fill, __ws2, __ws, 
00844                            __w, __len, true);
00845       __len = static_cast<int>(__w);
00846       // Switch strings.
00847       __ws = __ws2;
00848     }
00849       __io.width(0);
00850 
00851       // [22.2.2.2.2] Stage 4.
00852       // Write resulting, fully-formatted string to output iterator.
00853       for (int __j = 0; __j < __len; ++__j, ++__s)
00854     *__s = __ws[__j];
00855       return __s;
00856     }
00857 
00858   template<typename _CharT, typename _OutIter>
00859     _OutIter
00860     num_put<_CharT, _OutIter>::
00861     do_put(iter_type __s, ios_base& __io, char_type __fill, bool __v) const
00862     {
00863       ios_base::fmtflags __flags = __io.flags();
00864       if ((__flags & ios_base::boolalpha) == 0)
00865         {
00866           unsigned long __uv = __v;
00867           __s = _M_convert_int(__s, __io, __fill, 'u', char(), __uv);
00868         }
00869       else
00870         {
00871       typedef basic_string<_CharT> __string_type;
00872           locale __loc = __io.getloc();
00873       const numpunct<_CharT>& __np = use_facet<numpunct<_CharT> >(__loc); 
00874       __string_type __name;
00875           if (__v)
00876         __name = __np.truename();
00877           else
00878         __name = __np.falsename();
00879       __s = _M_insert(__s, __io, __fill, __name.c_str(), __name.size()); 
00880     }
00881       return __s;
00882     }
00883 
00884   template<typename _CharT, typename _OutIter>
00885     _OutIter
00886     num_put<_CharT, _OutIter>::
00887     do_put(iter_type __s, ios_base& __io, char_type __fill, long __v) const
00888     { return _M_convert_int(__s, __io, __fill, 'd', char(), __v); }
00889 
00890   template<typename _CharT, typename _OutIter>
00891     _OutIter
00892     num_put<_CharT, _OutIter>::
00893     do_put(iter_type __s, ios_base& __io, char_type __fill,
00894            unsigned long __v) const
00895     { return _M_convert_int(__s, __io, __fill, 'u', char(), __v); }
00896 
00897 #ifdef _GLIBCPP_USE_LONG_LONG
00898   template<typename _CharT, typename _OutIter>
00899     _OutIter
00900     num_put<_CharT, _OutIter>::
00901     do_put(iter_type __s, ios_base& __b, char_type __fill, long long __v) const
00902     { return _M_convert_int(__s, __b, __fill, 'd', 'l', __v); }
00903 
00904   template<typename _CharT, typename _OutIter>
00905     _OutIter
00906     num_put<_CharT, _OutIter>::
00907     do_put(iter_type __s, ios_base& __io, char_type __fill,
00908            unsigned long long __v) const
00909     { return _M_convert_int(__s, __io, __fill, 'u', 'l', __v); }
00910 #endif
00911 
00912   template<typename _CharT, typename _OutIter>
00913     _OutIter
00914     num_put<_CharT, _OutIter>::
00915     do_put(iter_type __s, ios_base& __io, char_type __fill, double __v) const
00916     { return _M_convert_float(__s, __io, __fill, char(), __v); }
00917 
00918   template<typename _CharT, typename _OutIter>
00919     _OutIter
00920     num_put<_CharT, _OutIter>::
00921     do_put(iter_type __s, ios_base& __io, char_type __fill, 
00922        long double __v) const
00923     { return _M_convert_float(__s, __io, __fill, 'L', __v); }
00924 
00925   template<typename _CharT, typename _OutIter>
00926     _OutIter
00927     num_put<_CharT, _OutIter>::
00928     do_put(iter_type __s, ios_base& __io, char_type __fill,
00929            const void* __v) const
00930     {
00931       ios_base::fmtflags __flags = __io.flags();
00932       ios_base::fmtflags __fmt = ~(ios_base::showpos | ios_base::basefield
00933                    | ios_base::uppercase | ios_base::internal);
00934       __io.flags(__flags & __fmt | (ios_base::hex | ios_base::showbase));
00935       try 
00936     {
00937       __s = _M_convert_int(__s, __io, __fill, 'u', char(),
00938                    reinterpret_cast<unsigned long>(__v));
00939       __io.flags(__flags);
00940     }
00941       catch (...) 
00942     {
00943       __io.flags(__flags);
00944       __throw_exception_again;
00945     }
00946       return __s;
00947     }
00948 
00949 
00950   template<typename _CharT, typename _InIter>
00951     _InIter
00952     money_get<_CharT, _InIter>::
00953     do_get(iter_type __beg, iter_type __end, bool __intl, ios_base& __io, 
00954        ios_base::iostate& __err, long double& __units) const
00955     { 
00956       string_type __str;
00957       __beg = this->do_get(__beg, __end, __intl, __io, __err, __str); 
00958 
00959       const int __n = numeric_limits<long double>::digits10;
00960       char* __cs = static_cast<char*>(__builtin_alloca(__n));
00961       const locale __loc = __io.getloc();
00962       const ctype<_CharT>& __ctype = use_facet<ctype<_CharT> >(__loc); 
00963       const _CharT* __wcs = __str.c_str();
00964       __ctype.narrow(__wcs, __wcs + __str.size() + 1, char(), __cs);      
00965       __convert_to_v(__cs, __units, __err, _S_c_locale);
00966       return __beg;
00967     }
00968 
00969   template<typename _CharT, typename _InIter>
00970     _InIter
00971     money_get<_CharT, _InIter>::
00972     do_get(iter_type __beg, iter_type __end, bool __intl, ios_base& __io, 
00973        ios_base::iostate& __err, string_type& __units) const
00974     { 
00975       // These contortions are quite unfortunate.
00976       typedef moneypunct<_CharT, true>      __money_true;
00977       typedef moneypunct<_CharT, false>     __money_false;
00978       typedef money_base::part          part;
00979       typedef typename string_type::size_type   size_type;
00980 
00981       const locale __loc = __io.getloc();
00982       const __money_true& __mpt = use_facet<__money_true>(__loc); 
00983       const __money_false& __mpf = use_facet<__money_false>(__loc); 
00984       const ctype<_CharT>& __ctype = use_facet<ctype<_CharT> >(__loc); 
00985 
00986       const money_base::pattern __p = __intl ? __mpt.neg_format() 
00987                          : __mpf.neg_format();
00988 
00989       const string_type __pos_sign =__intl ? __mpt.positive_sign() 
00990                        : __mpf.positive_sign();
00991       const string_type __neg_sign =__intl ? __mpt.negative_sign() 
00992                        : __mpf.negative_sign();
00993       const char_type __d = __intl ? __mpt.decimal_point() 
00994                            : __mpf.decimal_point();
00995       const char_type __sep = __intl ? __mpt.thousands_sep() 
00996                          : __mpf.thousands_sep();
00997 
00998       const string __grouping = __intl ? __mpt.grouping() : __mpf.grouping();
00999 
01000       // Set to deduced positive or negative sign, depending.
01001       string_type __sign;
01002       // String of grouping info from thousands_sep plucked from __units.
01003       string __grouping_tmp; 
01004       // Marker for thousands_sep position.
01005       int __sep_pos = 0;
01006       // If input iterator is in a valid state.
01007       bool __testvalid = true;
01008       // Flag marking when a decimal point is found.
01009       bool __testdecfound = false; 
01010 
01011       // The tentative returned string is stored here.
01012       string_type __temp_units;
01013 
01014       char_type __c = *__beg;
01015       char_type __eof = static_cast<char_type>(char_traits<char_type>::eof());
01016       for (int __i = 0; __beg != __end && __i < 4 && __testvalid; ++__i)
01017     {
01018       part __which = static_cast<part>(__p.field[__i]);
01019       switch (__which)
01020         {
01021         case money_base::symbol:
01022           if (__io.flags() & ios_base::showbase 
01023               || __i < 2 || __sign.size() > 1
01024               || ((static_cast<part>(__p.field[3]) != money_base::none)
01025               && __i == 2)) 
01026             {
01027               // According to 22.2.6.1.2.2, symbol is required
01028               // if (__io.flags() & ios_base::showbase),
01029               // otherwise is optional and consumed only if
01030               // other characters are needed to complete the
01031               // format.
01032               const string_type __symbol = __intl ? __mpt.curr_symbol()
01033                                  : __mpf.curr_symbol();
01034               size_type __len = __symbol.size();
01035               size_type __j = 0;
01036               while (__beg != __end 
01037                  && __j < __len && __symbol[__j] == __c)
01038             {
01039               __c = *(++__beg);
01040               ++__j;
01041             }
01042               // When (__io.flags() & ios_base::showbase)
01043               // symbol is required.
01044               if (__j != __len && (__io.flags() & ios_base::showbase))
01045             __testvalid = false;
01046             }
01047           break;
01048         case money_base::sign:          
01049           // Sign might not exist, or be more than one character long. 
01050           if (__pos_sign.size() && __neg_sign.size())
01051           {
01052             // Sign is mandatory.
01053             if (__c == __pos_sign[0])
01054               {
01055             __sign = __pos_sign;
01056             __c = *(++__beg);
01057               }
01058             else if (__c == __neg_sign[0])
01059               {
01060             __sign = __neg_sign;
01061             __c = *(++__beg);
01062               }
01063             else
01064               __testvalid = false;
01065           }
01066           else if (__pos_sign.size() && __c == __pos_sign[0])
01067             {
01068               __sign = __pos_sign;
01069               __c = *(++__beg);
01070             }
01071           else if (__neg_sign.size() && __c == __neg_sign[0])
01072             {
01073               __sign = __neg_sign;
01074               __c = *(++__beg);
01075             }
01076           break;
01077         case money_base::value:
01078           // Extract digits, remove and stash away the
01079           // grouping of found thousands separators.
01080           while (__beg != __end 
01081              && (__ctype.is(ctype_base::digit, __c) 
01082                  || (__c == __d && !__testdecfound)
01083                  || __c == __sep))
01084             {
01085               if (__c == __d)
01086             {
01087               __grouping_tmp += static_cast<char>(__sep_pos);
01088               __sep_pos = 0;
01089               __testdecfound = true;
01090             }
01091               else if (__c == __sep)
01092             {
01093               if (__grouping.size())
01094                 {
01095                   // Mark position for later analysis.
01096                   __grouping_tmp += static_cast<char>(__sep_pos);
01097                   __sep_pos = 0;
01098                 }
01099               else
01100                 {
01101                   __testvalid = false;
01102                   break;
01103                 }
01104             }
01105               else
01106             {
01107               __temp_units += __c;
01108               ++__sep_pos;
01109             }
01110               __c = *(++__beg);
01111             }
01112           break;
01113         case money_base::space:
01114         case money_base::none:
01115           // Only if not at the end of the pattern.
01116           if (__i != 3)
01117             while (__beg != __end 
01118                && __ctype.is(ctype_base::space, __c))
01119               __c = *(++__beg);
01120           break;
01121         }
01122     }
01123 
01124       // Need to get the rest of the sign characters, if they exist.
01125       if (__sign.size() > 1)
01126     {
01127       size_type __len = __sign.size();
01128       size_type __i = 1;
01129       for (; __c != __eof && __i < __len; ++__i)
01130         while (__beg != __end && __c != __sign[__i])
01131           __c = *(++__beg);
01132       
01133       if (__i != __len)
01134         __testvalid = false;
01135     }
01136 
01137       // Strip leading zeros.
01138       while (__temp_units[0] == __ctype.widen('0'))
01139     __temp_units.erase(__temp_units.begin());
01140 
01141       if (__sign.size() && __sign == __neg_sign)
01142     __temp_units.insert(__temp_units.begin(), __ctype.widen('-'));
01143 
01144       // Test for grouping fidelity.
01145       if (__grouping.size() && __grouping_tmp.size())
01146     {
01147       if (!__verify_grouping(__grouping, __grouping_tmp))
01148         __testvalid = false;
01149     }
01150 
01151       // Iff no more characters are available.      
01152       if (__c == __eof)
01153     __err |= ios_base::eofbit;
01154 
01155       // Iff valid sequence is not recognized.
01156       if (!__testvalid || !__temp_units.size())
01157     __err |= ios_base::failbit;
01158       else
01159     // Use the "swap trick" to copy __temp_units into __units.
01160     __temp_units.swap(__units);
01161 
01162       return __beg; 
01163     }
01164 
01165   template<typename _CharT, typename _OutIter>
01166     _OutIter
01167     money_put<_CharT, _OutIter>::
01168     do_put(iter_type __s, bool __intl, ios_base& __io, char_type __fill,
01169        long double __units) const
01170     { 
01171       const locale __loc = __io.getloc();
01172       const ctype<_CharT>& __ctype = use_facet<ctype<_CharT> >(__loc);
01173 #ifdef _GLIBCPP_USE_C99
01174       // First try a buffer perhaps big enough.
01175       int __cs_size = 64;
01176       char* __cs = static_cast<char*>(__builtin_alloca(__cs_size));
01177       int __len = __convert_from_v(__cs, __cs_size, "%.01Lf", __units, 
01178                    _S_c_locale);
01179       // If the buffer was not large enough, try again with the correct size.
01180       if (__len >= __cs_size)
01181     {
01182       __cs_size = __len + 1;
01183       __cs = static_cast<char*>(__builtin_alloca(__cs_size));
01184       __len = __convert_from_v(__cs, __cs_size, "%.01Lf", __units, 
01185                    _S_c_locale);
01186     }
01187 #else
01188       // max_exponent10 + 1 for the integer part, + 4 for sign, decimal point,
01189       // decimal digit, '\0'. 
01190       const int __cs_size = numeric_limits<long double>::max_exponent10 + 5;
01191       char* __cs = static_cast<char*>(__builtin_alloca(__cs_size));
01192       int __len = __convert_from_v(__cs, 0, "%.01Lf", __units, _S_c_locale);
01193 #endif
01194       _CharT* __ws = static_cast<_CharT*>(__builtin_alloca(sizeof(_CharT) * __cs_size));
01195       __ctype.widen(__cs, __cs + __len, __ws);
01196       string_type __digits(__ws);
01197       return this->do_put(__s, __intl, __io, __fill, __digits); 
01198     }
01199 
01200   template<typename _CharT, typename _OutIter>
01201     _OutIter
01202     money_put<_CharT, _OutIter>::
01203     do_put(iter_type __s, bool __intl, ios_base& __io, char_type __fill,
01204        const string_type& __digits) const
01205     { 
01206       typedef typename string_type::size_type   size_type;
01207       typedef money_base::part          part;
01208 
01209       const locale __loc = __io.getloc();
01210       const size_type __width = static_cast<size_type>(__io.width());
01211 
01212       // These contortions are quite unfortunate.
01213       typedef moneypunct<_CharT, true> __money_true;
01214       typedef moneypunct<_CharT, false> __money_false;
01215       const __money_true& __mpt = use_facet<__money_true>(__loc); 
01216       const __money_false& __mpf = use_facet<__money_false>(__loc); 
01217       const ctype<_CharT>& __ctype = use_facet<ctype<_CharT> >(__loc); 
01218 
01219       // Determine if negative or positive formats are to be used, and
01220       // discard leading negative_sign if it is present.
01221       const char_type* __beg = __digits.data();
01222       const char_type* __end = __beg + __digits.size();
01223       money_base::pattern __p;
01224       string_type __sign;
01225       if (*__beg != __ctype.widen('-'))
01226     {
01227       __p = __intl ? __mpt.pos_format() : __mpf.pos_format();
01228       __sign =__intl ? __mpt.positive_sign() : __mpf.positive_sign();
01229     }
01230       else
01231     {
01232       __p = __intl ? __mpt.neg_format() : __mpf.neg_format();
01233       __sign =__intl ? __mpt.negative_sign() : __mpf.negative_sign();
01234       ++__beg;
01235     }
01236       
01237       // Look for valid numbers in the current ctype facet within input digits.
01238       __end = __ctype.scan_not(ctype_base::digit, __beg, __end);
01239       if (__beg != __end)
01240     {
01241       // Assume valid input, and attempt to format.
01242       // Break down input numbers into base components, as follows:
01243       //   final_value = grouped units + (decimal point) + (digits)
01244       string_type __res;
01245       string_type __value;
01246       const string_type __symbol = __intl ? __mpt.curr_symbol() 
01247                               : __mpf.curr_symbol();
01248 
01249       // Deal with decimal point, decimal digits.
01250       const int __frac = __intl ? __mpt.frac_digits() 
01251                         : __mpf.frac_digits();
01252       if (__frac > 0)
01253         {
01254           const char_type __d = __intl ? __mpt.decimal_point() 
01255                        : __mpf.decimal_point();
01256           if (__end - __beg >= __frac)
01257         {
01258           __value = string_type(__end - __frac, __end);
01259           __value.insert(__value.begin(), __d);
01260           __end -= __frac;
01261         }
01262           else
01263         {
01264           // Have to pad zeros in the decimal position.
01265           __value = string_type(__beg, __end);
01266           int __paddec = __frac - (__end - __beg);
01267           char_type __zero = __ctype.widen('0');
01268           __value.insert(__value.begin(), __paddec, __zero);
01269           __value.insert(__value.begin(), __d);
01270           __beg = __end;
01271         }
01272         }
01273 
01274       // Add thousands separators to non-decimal digits, per
01275       // grouping rules.
01276       if (__beg != __end)
01277         {
01278           const string __grouping = __intl ? __mpt.grouping() 
01279                            : __mpf.grouping();
01280           if (__grouping.size())
01281         {
01282           const char_type __sep = __intl ? __mpt.thousands_sep() 
01283                                  : __mpf.thousands_sep();
01284           const char* __gbeg = __grouping.c_str();
01285           const char* __gend = __gbeg + __grouping.size();
01286           const int __n = (__end - __beg) * 2;
01287           _CharT* __ws2 =
01288             static_cast<_CharT*>(__builtin_alloca(sizeof(_CharT) * __n));
01289           _CharT* __ws_end = __add_grouping(__ws2, __sep, __gbeg, 
01290                             __gend, __beg, __end);
01291           __value.insert(0, __ws2, __ws_end - __ws2);
01292         }
01293           else
01294         __value.insert(0, string_type(__beg, __end));
01295         }
01296 
01297       // Calculate length of resulting string.
01298       ios_base::fmtflags __f = __io.flags() & ios_base::adjustfield;
01299       size_type __len = __value.size() + __sign.size();
01300       __len += (__io.flags() & ios_base::showbase) ? __symbol.size() : 0;
01301       bool __testipad = __f == ios_base::internal && __len < __width;
01302 
01303       // Fit formatted digits into the required pattern.
01304       for (int __i = 0; __i < 4; ++__i)
01305         {
01306           part __which = static_cast<part>(__p.field[__i]);
01307           switch (__which)
01308         {
01309         case money_base::symbol:
01310           if (__io.flags() & ios_base::showbase)
01311             __res += __symbol;
01312           break;
01313         case money_base::sign:          
01314           // Sign might not exist, or be more than one
01315           // charater long. In that case, add in the rest
01316           // below.
01317           if (__sign.size())
01318             __res += __sign[0];
01319           break;
01320         case money_base::value:
01321           __res += __value;
01322           break;
01323         case money_base::space:
01324           // At least one space is required, but if internal
01325           // formatting is required, an arbitrary number of
01326           // fill spaces will be necessary.
01327           if (__testipad)
01328             __res += string_type(__width - __len, __fill);
01329           else
01330             __res += __ctype.widen(__fill);
01331           break;
01332         case money_base::none:
01333           if (__testipad)
01334             __res += string_type(__width - __len, __fill);
01335           break;
01336         }
01337         }
01338 
01339       // Special case of multi-part sign parts.
01340       if (__sign.size() > 1)
01341         __res += string_type(__sign.begin() + 1, __sign.end());
01342 
01343       // Pad, if still necessary.
01344       __len = __res.size();
01345       if (__width > __len)
01346         {
01347           if (__f == ios_base::left)
01348         // After.
01349         __res.append(__width - __len, __fill);
01350           else
01351         // Before.
01352         __res.insert(0, string_type(__width - __len, __fill));
01353           __len = __width;
01354         }
01355 
01356       // Write resulting, fully-formatted string to output iterator.
01357       for (size_type __j = 0; __j < __len; ++__j, ++__s)
01358         *__s = __res[__j];
01359     }
01360       __io.width(0);
01361       return __s; 
01362     }
01363 
01364 
01365   // NB: Not especially useful. Without an ios_base object or some
01366   // kind of locale reference, we are left clawing at the air where
01367   // the side of the mountain used to be...
01368   template<typename _CharT, typename _InIter>
01369     time_base::dateorder
01370     time_get<_CharT, _InIter>::do_date_order() const
01371     { return time_base::no_order; }
01372 
01373   template<typename _CharT, typename _InIter>
01374     void
01375     time_get<_CharT, _InIter>::
01376     _M_extract_via_format(iter_type& __beg, iter_type& __end, ios_base& __io,
01377               ios_base::iostate& __err, tm* __tm, 
01378               const _CharT* __format) const
01379     {  
01380       locale __loc = __io.getloc();
01381       __timepunct<_CharT> const& __tp = use_facet<__timepunct<_CharT> >(__loc);
01382       const ctype<_CharT>& __ctype = use_facet<ctype<_CharT> >(__loc); 
01383       size_t __len = char_traits<_CharT>::length(__format);
01384 
01385       for (size_t __i = 0; __beg != __end && __i < __len && !__err; ++__i)
01386     {
01387       char __c = __format[__i];
01388       if (__c == '%')
01389         {
01390           // Verify valid formatting code, attempt to extract.
01391           __c = __format[++__i];
01392           char __mod = 0;
01393           int __mem = 0; 
01394           if (__c == 'E' || __c == 'O')
01395         {
01396           __mod = __c;
01397           __c = __format[++__i];
01398         }
01399           switch (__c)
01400         {
01401           const char* __cs;
01402           _CharT __wcs[10];
01403         case 'a':
01404           // Abbreviated weekday name [tm_wday]
01405           const char_type*  __days1[7];
01406           __tp._M_days_abbreviated(__days1);
01407           _M_extract_name(__beg, __end, __tm->tm_wday, __days1, 7, 
01408                   __err);
01409           break;
01410         case 'A':
01411           // Weekday name [tm_wday].
01412           const char_type*  __days2[7];
01413           __tp._M_days(__days2);
01414           _M_extract_name(__beg, __end, __tm->tm_wday, __days2, 7, 
01415                   __err);
01416           break;
01417         case 'h':
01418         case 'b':
01419           // Abbreviated month name [tm_mon]
01420           const char_type*  __months1[12];
01421           __tp._M_months_abbreviated(__months1);
01422           _M_extract_name(__beg, __end, __tm->tm_mon, __months1, 12, 
01423                   __err);
01424           break;
01425         case 'B':
01426           // Month name [tm_mon].
01427           const char_type*  __months2[12];
01428           __tp._M_months(__months2);
01429           _M_extract_name(__beg, __end, __tm->tm_mon, __months2, 12, 
01430                   __err);
01431           break;
01432         case 'c':
01433           // Default time and date representation.
01434           const char_type*  __dt[2];
01435           __tp._M_date_time_formats(__dt);
01436           _M_extract_via_format(__beg, __end, __io, __err, __tm, 
01437                     __dt[0]);
01438           break;
01439         case 'd':
01440           // Day [01, 31]. [tm_mday]
01441           _M_extract_num(__beg, __end, __tm->tm_mday, 1, 31, 2, 
01442                  __ctype, __err);
01443           break;
01444         case 'D':
01445           // Equivalent to %m/%d/%y.[tm_mon, tm_mday, tm_year]
01446           __cs = "%m/%d/%y";
01447           __ctype.widen(__cs, __cs + 9, __wcs);
01448           _M_extract_via_format(__beg, __end, __io, __err, __tm, 
01449                     __wcs);
01450           break;
01451         case 'H':
01452           // Hour [00, 23]. [tm_hour]
01453           _M_extract_num(__beg, __end, __tm->tm_hour, 0, 23, 2,
01454                  __ctype, __err);
01455           break;
01456         case 'I':
01457           // Hour [01, 12]. [tm_hour]
01458           _M_extract_num(__beg, __end, __tm->tm_hour, 1, 12, 2, 
01459                  __ctype, __err);
01460           break;
01461         case 'm':
01462           // Month [01, 12]. [tm_mon]
01463           _M_extract_num(__beg, __end, __mem, 1, 12, 2, __ctype, 
01464                  __err);
01465           if (!__err)
01466             __tm->tm_mon = __mem - 1;
01467           break;
01468         case 'M':
01469           // Minute [00, 59]. [tm_min]
01470           _M_extract_num(__beg, __end, __tm->tm_min, 0, 59, 2,
01471                  __ctype, __err);
01472           break;
01473         case 'n':
01474           if (__ctype.narrow(*__beg, 0) == '\n')
01475             ++__beg;
01476           else
01477             __err |= ios_base::failbit;
01478           break;
01479         case 'R':
01480           // Equivalent to (%H:%M).
01481           __cs = "%H:%M";
01482           __ctype.widen(__cs, __cs + 6, __wcs);
01483           _M_extract_via_format(__beg, __end, __io, __err, __tm, 
01484                     __wcs);
01485           break;
01486         case 'S':
01487           // Seconds.
01488           _M_extract_num(__beg, __end, __tm->tm_sec, 0, 59, 2,
01489                  __ctype, __err);
01490           break;
01491         case 't':
01492           if (__ctype.narrow(*__beg, 0) == '\t')
01493             ++__beg;
01494           else
01495         __err |= ios_base::failbit;
01496           break;
01497         case 'T':
01498           // Equivalent to (%H:%M:%S).
01499           __cs = "%H:%M:%S";
01500           __ctype.widen(__cs, __cs + 9, __wcs);
01501           _M_extract_via_format(__beg, __end, __io, __err, __tm, 
01502                     __wcs);
01503           break;
01504         case 'x':
01505           // Locale's date.
01506           const char_type*  __dates[2];
01507           __tp._M_date_formats(__dates);
01508           _M_extract_via_format(__beg, __end, __io, __err, __tm, 
01509                     __dates[0]);
01510           break;
01511         case 'X':
01512           // Locale's time.
01513           const char_type*  __times[2];
01514           __tp._M_time_formats(__times);
01515           _M_extract_via_format(__beg, __end, __io, __err, __tm, 
01516                     __times[0]);
01517           break;
01518         case 'y':
01519           // Two digit year. [tm_year]
01520           _M_extract_num(__beg, __end, __tm->tm_year, 0, 99, 2, 
01521                  __ctype, __err);
01522           break;
01523         case 'Y':
01524           // Year [1900). [tm_year]
01525           _M_extract_num(__beg, __end, __mem, 0, 
01526                  numeric_limits<int>::max(), 4, 
01527                  __ctype, __err);
01528           if (!__err)
01529             __tm->tm_year = __mem - 1900;
01530           break;
01531         case 'Z':
01532           // Timezone info.
01533           if (__ctype.is(ctype_base::upper, *__beg))
01534             {
01535               int __tmp;
01536               _M_extract_name(__beg, __end, __tmp, 
01537                       __timepunct<_CharT>::_S_timezones, 
01538                       14, __err);
01539               
01540               // GMT requires special effort.
01541               char_type __c = *__beg;
01542               if (!__err && __tmp == 0 
01543               && (__c == __ctype.widen('-') 
01544                   || __c == __ctype.widen('+')))
01545             {
01546               _M_extract_num(__beg, __end, __tmp, 0, 23, 2,
01547                       __ctype, __err);
01548               _M_extract_num(__beg, __end, __tmp, 0, 59, 2,
01549                       __ctype, __err);
01550             }       
01551               }
01552               else
01553             __err |= ios_base::failbit;
01554               break;
01555             default:
01556               // Not recognized.
01557               __err |= ios_base::failbit;
01558             }
01559         }
01560           else
01561         {
01562           // Verify format and input match, extract and discard.
01563           if (__c == __ctype.narrow(*__beg, 0))
01564             ++__beg;
01565           else
01566             __err |= ios_base::failbit;
01567         }
01568     }
01569     }
01570 
01571   template<typename _CharT, typename _InIter>
01572     void
01573     time_get<_CharT, _InIter>::
01574     _M_extract_num(iter_type& __beg, iter_type& __end, int& __member,
01575            int __min, int __max, size_t __len, 
01576            const ctype<_CharT>& __ctype, 
01577            ios_base::iostate& __err) const
01578     {
01579       size_t __i = 0;
01580       string __digits;
01581       bool __testvalid = true;
01582       char_type __c = *__beg;
01583       while (__beg != __end && __i < __len 
01584          && __ctype.is(ctype_base::digit, __c)) 
01585     {
01586       __digits += __ctype.narrow(__c, 0);
01587       __c = *(++__beg);
01588       ++__i;
01589     }
01590       if (__i == __len)
01591     {
01592       int __value = atoi(__digits.c_str());
01593       if (__min <= __value && __value <= __max)
01594         __member = __value;
01595       else
01596         __testvalid = false;
01597     }
01598       else
01599     __testvalid = false;
01600       if (!__testvalid)
01601     __err |= ios_base::failbit;
01602     }
01603 
01604   // Assumptions:
01605   // All elements in __names are unique.
01606   template<typename _CharT, typename _InIter>
01607     void
01608     time_get<_CharT, _InIter>::
01609     _M_extract_name(iter_type& __beg, iter_type& __end, int& __member,
01610             const _CharT** __names, size_t __indexlen, 
01611             ios_base::iostate& __err) const
01612     {
01613       typedef char_traits<_CharT>       __traits_type;
01614       int* __matches = static_cast<int*>(__builtin_alloca(sizeof(int) * __indexlen));
01615       size_t __nmatches = 0;
01616       size_t __pos = 0;
01617       bool __testvalid = true;
01618       const char_type* __name;
01619 
01620       char_type __c = *__beg;
01621       // Look for initial matches.
01622       for (size_t __i1 = 0; __i1 < __indexlen; ++__i1)
01623     if (__c == __names[__i1][0])
01624       __matches[__nmatches++] = __i1;
01625       
01626       while(__nmatches > 1)
01627     {
01628       // Find smallest matching string.
01629       size_t __minlen = 10;
01630       for (size_t __i2 = 0; __i2 < __nmatches; ++__i2)
01631         __minlen = min(__minlen, 
01632                __traits_type::length(__names[__matches[__i2]]));
01633       
01634       if (__pos < __minlen && __beg != __end)
01635         {
01636           ++__pos;
01637           __c = *(++__beg);
01638           for (size_t __i3 = 0; __i3 < __nmatches; ++__i3)
01639         {
01640           __name = __names[__matches[__i3]];
01641           if (__name[__pos] != __c)
01642             __matches[__i3] = __matches[--__nmatches];
01643         }
01644         }
01645       else
01646         break;
01647     }
01648 
01649       if (__nmatches == 1)
01650     {
01651       // Make sure found name is completely extracted.
01652       __name = __names[__matches[0]];
01653       const size_t __len = __traits_type::length(__name);
01654       while (__pos < __len && __beg != __end && __name[__pos] == *__beg)
01655         ++__beg, ++__pos;
01656 
01657       if (__len == __pos)
01658         __member = __matches[0];
01659       else
01660         __testvalid = false;
01661     }
01662       else
01663     __testvalid = false;
01664       if (!__testvalid)
01665     __err |= ios_base::failbit;
01666     }
01667 
01668   template<typename _CharT, typename _InIter>
01669     _InIter
01670     time_get<_CharT, _InIter>::
01671     do_get_time(iter_type __beg, iter_type __end, ios_base& __io,
01672         ios_base::iostate& __err, tm* __tm) const
01673     {
01674       _CharT __wcs[3];
01675       const char* __cs = "%X";
01676       locale __loc = __io.getloc();
01677       ctype<_CharT> const& __ctype = use_facet<ctype<_CharT> >(__loc);
01678       __ctype.widen(__cs, __cs + 3, __wcs);
01679       _M_extract_via_format(__beg, __end, __io, __err, __tm, __wcs);
01680       if (__beg == __end)
01681     __err |= ios_base::eofbit;
01682       return __beg;
01683     }
01684 
01685   template<typename _CharT, typename _InIter>
01686     _InIter
01687     time_get<_CharT, _InIter>::
01688     do_get_date(iter_type __beg, iter_type __end, ios_base& __io,
01689         ios_base::iostate& __err, tm* __tm) const
01690     {
01691       _CharT __wcs[3];
01692       const char* __cs = "%x";
01693       locale __loc = __io.getloc();
01694       ctype<_CharT> const& __ctype = use_facet<ctype<_CharT> >(__loc);
01695       __ctype.widen(__cs, __cs + 3, __wcs);
01696       _M_extract_via_format(__beg, __end, __io, __err, __tm, __wcs);
01697       if (__beg == __end)
01698     __err |= ios_base::eofbit;
01699       return __beg;
01700     }
01701 
01702   template<typename _CharT, typename _InIter>
01703     _InIter
01704     time_get<_CharT, _InIter>::
01705     do_get_weekday(iter_type __beg, iter_type __end, ios_base& __io, 
01706            ios_base::iostate& __err, tm* __tm) const
01707     {
01708       typedef char_traits<_CharT>       __traits_type;
01709       locale __loc = __io.getloc();
01710       __timepunct<_CharT> const& __tp = use_facet<__timepunct<_CharT> >(__loc);
01711       const char_type*  __days[7];
01712       __tp._M_days_abbreviated(__days);
01713       int __tmpwday;
01714       _M_extract_name(__beg, __end, __tmpwday, __days, 7, __err);
01715 
01716       // Check to see if non-abbreviated name exists, and extract.
01717       // NB: Assumes both _M_days and _M_days_abbreviated organized in
01718       // exact same order, first to last, such that the resulting
01719       // __days array with the same index points to a day, and that
01720       // day's abbreviated form.
01721       // NB: Also assumes that an abbreviated name is a subset of the name. 
01722       if (!__err)
01723     {
01724       size_t __pos = __traits_type::length(__days[__tmpwday]);
01725       __tp._M_days(__days);
01726       const char_type* __name = __days[__tmpwday];
01727       if (__name[__pos] == *__beg)
01728         {
01729           // Extract the rest of it.
01730           const size_t __len = __traits_type::length(__name);
01731           while (__pos < __len && __beg != __end 
01732              && __name[__pos] == *__beg)
01733         ++__beg, ++__pos;
01734           if (__len != __pos)
01735         __err |= ios_base::failbit;
01736         }
01737       if (!__err)
01738         __tm->tm_wday = __tmpwday;
01739     }
01740       if (__beg == __end)
01741     __err |= ios_base::eofbit;
01742       return __beg;
01743      }
01744 
01745   template<typename _CharT, typename _InIter>
01746     _InIter
01747     time_get<_CharT, _InIter>::
01748     do_get_monthname(iter_type __beg, iter_type __end,
01749                      ios_base& __io, ios_base::iostate& __err, tm* __tm) const
01750     {
01751       typedef char_traits<_CharT>       __traits_type;
01752       locale __loc = __io.getloc();
01753       __timepunct<_CharT> const& __tp = use_facet<__timepunct<_CharT> >(__loc);
01754       const char_type*  __months[12];
01755       __tp._M_months_abbreviated(__months);
01756       int __tmpmon;
01757       _M_extract_name(__beg, __end, __tmpmon, __months, 12, __err);
01758 
01759       // Check to see if non-abbreviated name exists, and extract.
01760       // NB: Assumes both _M_months and _M_months_abbreviated organized in
01761       // exact same order, first to last, such that the resulting
01762       // __months array with the same index points to a month, and that
01763       // month's abbreviated form.
01764       // NB: Also assumes that an abbreviated name is a subset of the name. 
01765       if (!__err)
01766     {
01767       size_t __pos = __traits_type::length(__months[__tmpmon]);
01768       __tp._M_months(__months);
01769       const char_type* __name = __months[__tmpmon];
01770       if (__name[__pos] == *__beg)
01771         {
01772           // Extract the rest of it.
01773           const size_t __len = __traits_type::length(__name);
01774           while (__pos < __len && __beg != __end 
01775              && __name[__pos] == *__beg)
01776         ++__beg, ++__pos;
01777           if (__len != __pos)
01778         __err |= ios_base::failbit;
01779         }
01780       if (!__err)
01781         __tm->tm_mon = __tmpmon;
01782     }
01783  
01784       if (__beg == __end)
01785     __err |= ios_base::eofbit;
01786       return __beg;
01787     }
01788 
01789   template<typename _CharT, typename _InIter>
01790     _InIter
01791     time_get<_CharT, _InIter>::
01792     do_get_year(iter_type __beg, iter_type __end, ios_base& __io, 
01793         ios_base::iostate& __err, tm* __tm) const
01794     {
01795       locale __loc = __io.getloc();
01796       const ctype<_CharT>& __ctype = use_facet<ctype<_CharT> >(__loc); 
01797 
01798       char_type __c = *__beg;
01799       size_t __i = 0;
01800       string __digits;
01801       while (__i < 4 && __beg != __end && __ctype.is(ctype_base::digit, __c))
01802     {
01803       __digits += __ctype.narrow(__c, 0);
01804       __c = *(++__beg);
01805       ++__i;
01806     }
01807       if (__i == 2 || __i == 4)
01808     {
01809       long __l;
01810       __convert_to_v(__digits.c_str(), __l, __err, _S_c_locale);
01811       if (!(__err & ios_base::failbit) && __l <= INT_MAX)
01812         {
01813           __l = __i == 2 ? __l : __l - 1900; 
01814           __tm->tm_year = static_cast<int>(__l);
01815         }
01816     }
01817       else
01818     __err |= ios_base::failbit;
01819       if (__beg == __end)
01820     __err |= ios_base::eofbit;
01821       return __beg;
01822     }
01823 
01824   template<typename _CharT, typename _OutIter>
01825     _OutIter
01826     time_put<_CharT, _OutIter>::
01827     put(iter_type __s, ios_base& __io, char_type, const tm* __tm, 
01828     const _CharT* __beg, const _CharT* __end) const
01829     {
01830       locale __loc = __io.getloc();
01831       ctype<_CharT> const& __ctype = use_facet<ctype<_CharT> >(__loc);
01832       while (__beg != __end)
01833     {
01834       char __c = __ctype.narrow(*__beg, 0);
01835       ++__beg;
01836       if (__c == '%')
01837         {
01838           char __format;
01839           char __mod = 0;
01840           size_t __len = 1; 
01841           __c = __ctype.narrow(*__beg, 0);
01842           ++__beg;
01843           if (__c == 'E' || __c == 'O')
01844         {
01845           __mod = __c;
01846           __format = __ctype.narrow(*__beg, 0);
01847           ++__beg;
01848         }
01849           else
01850         __format = __c;
01851           __s = this->do_put(__s, __io, char_type(), __tm, __format, 
01852                  __mod);
01853         }
01854       else
01855         {
01856           *__s = __c;
01857           ++__s;
01858         }
01859     }
01860       return __s;
01861     }
01862 
01863   template<typename _CharT, typename _OutIter>
01864     _OutIter
01865     time_put<_CharT, _OutIter>::
01866     do_put(iter_type __s, ios_base& __io, char_type, const tm* __tm, 
01867        char __format, char __mod) const
01868     { 
01869       locale __loc = __io.getloc();
01870       ctype<_CharT> const& __ctype = use_facet<ctype<_CharT> >(__loc);
01871       __timepunct<_CharT> const& __tp = use_facet<__timepunct<_CharT> >(__loc);
01872 
01873       // NB: This size is arbitrary. Should this be a data member,
01874       // initialized at construction?
01875       const size_t __maxlen = 64;
01876       char_type* __res =
01877     static_cast<char_type*>(__builtin_alloca(sizeof(char_type) * __maxlen));
01878 
01879       // NB: In IEE 1003.1-200x, and perhaps other locale models, it
01880       // is possible that the format character will be longer than one
01881       // character. Possibilities include 'E' or 'O' followed by a
01882       // format character: if __mod is not the default argument, assume
01883       // it's a valid modifier.
01884       char_type __fmt[4];
01885       __fmt[0] = __ctype.widen('%'); 
01886       if (!__mod)
01887     {
01888       __fmt[1] = __format;
01889       __fmt[2] = char_type();
01890     }
01891       else
01892     {
01893       __fmt[1] = __mod;
01894       __fmt[2] = __format;
01895       __fmt[3] = char_type();
01896     }
01897 
01898       __tp._M_put(__res, __maxlen, __fmt, __tm);
01899 
01900       // Write resulting, fully-formatted string to output iterator.
01901       size_t __len = char_traits<char_type>::length(__res);
01902       for (size_t __i = 0; __i < __len; ++__i, ++__s)
01903     *__s = __res[__i];
01904       return __s;
01905     }
01906 
01907 
01908   // Generic version does nothing.
01909   template<typename _CharT>
01910     int
01911     collate<_CharT>::_M_compare(const _CharT*, const _CharT*) const
01912     { return 0; }
01913 
01914   // Generic version does nothing.
01915   template<typename _CharT>
01916     size_t
01917     collate<_CharT>::_M_transform(_CharT*, const _CharT*, size_t) const
01918     { return 0; }
01919 
01920   template<typename _CharT>
01921     int
01922     collate<_CharT>::
01923     do_compare(const _CharT* __lo1, const _CharT* __hi1, 
01924            const _CharT* __lo2, const _CharT* __hi2) const
01925     { 
01926       const string_type __one(__lo1, __hi1);
01927       const string_type __two(__lo2, __hi2);
01928       return _M_compare(__one.c_str(), __two.c_str());
01929     }
01930 
01931  template<typename _CharT>
01932     typename collate<_CharT>::string_type
01933     collate<_CharT>::
01934     do_transform(const _CharT* __lo, const _CharT* __hi) const
01935     {
01936       size_t __len = (__hi - __lo) * 2;
01937       // First try a buffer perhaps big enough.
01938       _CharT* __c =
01939     static_cast<_CharT*>(__builtin_alloca(sizeof(_CharT) * __len));
01940       size_t __res = _M_transform(__c, __lo, __len);
01941       // If the buffer was not large enough, try again with the correct size.
01942       if (__res >= __len)
01943     {
01944       __c =
01945         static_cast<_CharT*>(__builtin_alloca(sizeof(_CharT) * (__res + 1)));
01946       _M_transform(__c, __lo, __res + 1);
01947     }
01948       return string_type(__c);
01949     }
01950 
01951  template<typename _CharT>
01952     long
01953     collate<_CharT>::
01954     do_hash(const _CharT* __lo, const _CharT* __hi) const
01955     { 
01956       unsigned long __val = 0;
01957       for (; __lo < __hi; ++__lo)
01958     __val = *__lo + ((__val << 7) | 
01959                (__val >> (numeric_limits<unsigned long>::digits - 7)));
01960       return static_cast<long>(__val);
01961     }
01962 
01963   // Convert string to numeric value of type _Tv and store results.  
01964   // NB: This is specialized for all required types, there is no
01965   // generic definition.
01966   template<typename _Tv>
01967     void
01968     __convert_to_v(const char* __in, _Tv& __out, ios_base::iostate& __err, 
01969            const __c_locale& __cloc, int __base = 10);
01970 
01971   // Convert numeric value of type _Tv to string and return length of string.
01972   // If snprintf is available use it, otherwise fall back to the unsafe sprintf
01973   // which, in general, can be dangerous and should be avoided.
01974   template<typename _Tv>
01975     int
01976     __convert_from_v(char* __out, const int __size, const char* __fmt,
01977              _Tv __v, const __c_locale&, int __prec = -1);
01978 
01979   // Construct correctly padded string, as per 22.2.2.2.2
01980   // Assumes 
01981   // __newlen > __oldlen
01982   // __news is allocated for __newlen size
01983   // Used by both num_put and ostream inserters: if __num,
01984   // internal-adjusted objects are padded according to the rules below
01985   // concerning 0[xX] and +-, otherwise, exactly as right-adjusted
01986   // ones are.
01987 
01988   // NB: Of the two parameters, _CharT can be deduced from the
01989   // function arguments. The other (_Traits) has to be explicitly specified.
01990   template<typename _CharT, typename _Traits>
01991     struct __pad
01992     {
01993       static void
01994       _S_pad(ios_base& __io, _CharT __fill, _CharT* __news, 
01995          const _CharT* __olds, const streamsize __newlen, 
01996          const streamsize __oldlen, const bool __num);
01997     };
01998 
01999   template<typename _CharT, typename _Traits>
02000     void 
02001     __pad<_CharT, _Traits>::_S_pad(ios_base& __io, _CharT __fill, 
02002                    _CharT* __news, const _CharT* __olds, 
02003                    const streamsize __newlen, 
02004                    const streamsize __oldlen, const bool __num)
02005     {
02006       size_t __plen = static_cast<size_t>(__newlen - __oldlen);
02007       _CharT* __pads = static_cast<_CharT*>(__builtin_alloca(sizeof(_CharT) * __plen));
02008       _Traits::assign(__pads, __plen, __fill); 
02009 
02010       _CharT* __beg;
02011       _CharT* __end;
02012       size_t __mod = 0;
02013       size_t __beglen; //either __plen or __oldlen
02014       ios_base::fmtflags __adjust = __io.flags() & ios_base::adjustfield;
02015 
02016       if (__adjust == ios_base::left)
02017     {
02018       // Padding last.
02019       __beg = const_cast<_CharT*>(__olds);
02020       __beglen = __oldlen;
02021       __end = __pads;
02022     }
02023       else if (__adjust == ios_base::internal && __num)
02024     {
02025       // Pad after the sign, if there is one.
02026       // Pad after 0[xX], if there is one.
02027       // Who came up with these rules, anyway? Jeeze.
02028           locale __loc = __io.getloc();
02029       const ctype<_CharT>& __ctype = use_facet<ctype<_CharT> >(__loc); 
02030       const _CharT __minus = __ctype.widen('-');
02031       const _CharT __plus = __ctype.widen('+');
02032       bool __testsign = _Traits::eq(__olds[0], __minus)
02033                     || _Traits::eq(__olds[0], __plus);
02034 
02035       bool __testhex = _Traits::eq(__ctype.widen('0'), __olds[0]) 
02036                    && (_Traits::eq(__ctype.widen('x'), __olds[1]) 
02037                    || _Traits::eq(__ctype.widen('X'), __olds[1]));
02038       if (__testhex)
02039         {
02040           __news[0] = __olds[0]; 
02041           __news[1] = __olds[1];
02042           __mod += 2;
02043           __news += 2;
02044           __beg = __pads;
02045           __beglen = __plen;
02046           __end = const_cast<_CharT*>(__olds + __mod);
02047         }
02048       else if (__testsign)
02049         {
02050           _Traits::eq((__news[0] = __olds[0]), __plus) ? __plus : __minus;
02051           ++__mod;
02052           ++__news;
02053           __beg = __pads;
02054           __beglen = __plen;
02055           __end = const_cast<_CharT*>(__olds + __mod);
02056         }
02057       else
02058         {
02059           // Padding first.
02060           __beg = __pads;
02061           __beglen = __plen;
02062           __end = const_cast<_CharT*>(__olds);
02063         }
02064     }
02065       else
02066     {
02067       // Padding first.
02068       __beg = __pads;
02069       __beglen = __plen;
02070       __end = const_cast<_CharT*>(__olds);
02071     }
02072       _Traits::copy(__news, __beg, __beglen);
02073       _Traits::copy(__news + __beglen, __end, 
02074               __newlen - __beglen - __mod);
02075     }
02076 
02077   // Used by both numeric and monetary facets.
02078   // Check to make sure that the __grouping_tmp string constructed in
02079   // money_get or num_get matches the canonical grouping for a given
02080   // locale.
02081   // __grouping_tmp is parsed L to R
02082   // 1,222,444 == __grouping_tmp of "/1/3/3"
02083   // __grouping is parsed R to L
02084   // 1,222,444 == __grouping of "/3" == "/3/3/3"
02085   template<typename _CharT>
02086     bool
02087     __verify_grouping(const basic_string<_CharT>& __grouping, 
02088               basic_string<_CharT>& __grouping_tmp)
02089     {         
02090       int __i = 0;
02091       int __j = 0;
02092       const int __len = __grouping.size();
02093       const int __n = __grouping_tmp.size();
02094       bool __test = true;
02095       
02096       // Parsed number groupings have to match the
02097       // numpunct::grouping string exactly, starting at the
02098       // right-most point of the parsed sequence of elements ...
02099       while (__test && __i < __n - 1)
02100     for (__j = 0; __test && __j < __len && __i < __n - 1; ++__j,++__i)
02101       __test &= __grouping[__j] == __grouping_tmp[__n - __i - 1];
02102       // ... but the last parsed grouping can be <= numpunct
02103       // grouping.
02104       __j == __len ? __j = 0 : __j;
02105       __test &= __grouping[__j] >= __grouping_tmp[__n - __i - 1];
02106       return __test;
02107     }
02108 
02109   // Used by both numeric and monetary facets.
02110   // Inserts "group separator" characters into an array of characters.
02111   // It's recursive, one iteration per group.  It moves the characters
02112   // in the buffer this way: "xxxx12345" -> "12,345xxx".  Call this
02113   // only with __gbeg != __gend.
02114   template<typename _CharT>
02115     _CharT*
02116     __add_grouping(_CharT* __s, _CharT __sep,  
02117            const char* __gbeg, const char* __gend, 
02118            const _CharT* __first, const _CharT* __last)
02119     {
02120       if (__last - __first > *__gbeg)
02121         {
02122           __s = __add_grouping(__s,  __sep, 
02123                    (__gbeg + 1 == __gend ? __gbeg : __gbeg + 1),
02124                    __gend, __first, __last - *__gbeg);
02125           __first = __last - *__gbeg;
02126           *__s++ = __sep;
02127         }
02128       do
02129     *__s++ = *__first++;
02130       while (__first != __last);
02131       return __s;
02132     }
02133 
02134   // Inhibit implicit instantiations for required instantiations,
02135   // which are defined via explicit instantiations elsewhere.  
02136   // NB: This syntax is a GNU extension.
02137   extern template class moneypunct<char, false>;
02138   extern template class moneypunct<char, true>;
02139   extern template class moneypunct_byname<char, false>;
02140   extern template class moneypunct_byname<char, true>;
02141   extern template class money_get<char>;
02142   extern template class money_put<char>;
02143   extern template class numpunct<char>;
02144   extern template class numpunct_byname<char>;
02145   extern template class num_get<char>;
02146   extern template class num_put<char>; 
02147   extern template class __timepunct<char>;
02148   extern template class time_put<char>;
02149   extern template class time_put_byname<char>;
02150   extern template class time_get<char>;
02151   extern template class time_get_byname<char>;
02152   extern template class messages<char>;
02153   extern template class messages_byname<char>;
02154   extern template class ctype_byname<char>;
02155   extern template class codecvt_byname<char, char, mbstate_t>;
02156   extern template class collate<char>;
02157   extern template class collate_byname<char>;
02158 
02159   extern template
02160     const codecvt<char, char, mbstate_t>& 
02161     use_facet<codecvt<char, char, mbstate_t> >(const locale&);
02162 
02163   extern template
02164     const collate<char>& 
02165     use_facet<collate<char> >(const locale&);
02166 
02167   extern template
02168     const numpunct<char>& 
02169     use_facet<numpunct<char> >(const locale&);
02170 
02171   extern template 
02172     const num_put<char>& 
02173     use_facet<num_put<char> >(const locale&);
02174 
02175   extern template 
02176     const num_get<char>& 
02177     use_facet<num_get<char> >(const locale&);
02178 
02179   extern template
02180     const moneypunct<char, true>& 
02181     use_facet<moneypunct<char, true> >(const locale&);
02182 
02183   extern template
02184     const moneypunct<char, false>& 
02185     use_facet<moneypunct<char, false> >(const locale&);
02186 
02187   extern template 
02188     const money_put<char>& 
02189     use_facet<money_put<char> >(const locale&);
02190 
02191   extern template 
02192     const money_get<char>& 
02193     use_facet<money_get<char> >(const locale&);
02194 
02195   extern template
02196     const __timepunct<char>& 
02197     use_facet<__timepunct<char> >(const locale&);
02198 
02199   extern template 
02200     const time_put<char>& 
02201     use_facet<time_put<char> >(const locale&);
02202 
02203   extern template 
02204     const time_get<char>& 
02205     use_facet<time_get<char> >(const locale&);
02206 
02207   extern template 
02208     const messages<char>& 
02209     use_facet<messages<char> >(const locale&);
02210 
02211   extern template 
02212     bool
02213     has_facet<ctype<char> >(const locale&);
02214 
02215   extern template 
02216     bool
02217     has_facet<codecvt<char, char, mbstate_t> >(const locale&);
02218 
02219   extern template 
02220     bool
02221     has_facet<collate<char> >(const locale&);
02222 
02223   extern template 
02224     bool
02225     has_facet<numpunct<char> >(const locale&);
02226 
02227   extern template 
02228     bool
02229     has_facet<num_put<char> >(const locale&);
02230 
02231   extern template 
02232     bool
02233     has_facet<num_get<char> >(const locale&);
02234 
02235   extern template 
02236     bool
02237     has_facet<moneypunct<char> >(const locale&);
02238 
02239   extern template 
02240     bool
02241     has_facet<money_put<char> >(const locale&);
02242 
02243   extern template 
02244     bool
02245     has_facet<money_get<char> >(const locale&);
02246 
02247   extern template 
02248     bool
02249     has_facet<__timepunct<char> >(const locale&);
02250 
02251   extern template 
02252     bool
02253     has_facet<time_put<char> >(const locale&);
02254 
02255   extern template 
02256     bool
02257     has_facet<time_get<char> >(const locale&);
02258 
02259   extern template 
02260     bool
02261     has_facet<messages<char> >(const locale&);
02262 
02263 #ifdef _GLIBCPP_USE_WCHAR_T
02264   extern template class moneypunct<wchar_t, false>;
02265   extern template class moneypunct<wchar_t, true>;
02266   extern template class moneypunct_byname<wchar_t, false>;
02267   extern template class moneypunct_byname<wchar_t, true>;
02268   extern template class money_get<wchar_t>;
02269   extern template class money_put<wchar_t>;
02270   extern template class numpunct<wchar_t>;
02271   extern template class numpunct_byname<wchar_t>;
02272   extern template class num_get<wchar_t>;
02273   extern template class num_put<wchar_t>;
02274   extern template class __timepunct<wchar_t>;
02275   extern template class time_put<wchar_t>;
02276   extern template class time_put_byname<wchar_t>;
02277   extern template class time_get<wchar_t>;
02278   extern template class time_get_byname<wchar_t>;
02279   extern template class messages<wchar_t>;
02280   extern template class messages_byname<wchar_t>;
02281   extern template class ctype_byname<wchar_t>;
02282   extern template class codecvt_byname<wchar_t, char, mbstate_t>;
02283   extern template class collate<wchar_t>;
02284   extern template class collate_byname<wchar_t>;
02285 
02286   extern template
02287     const codecvt<wchar_t, char, mbstate_t>& 
02288     use_facet<codecvt<wchar_t, char, mbstate_t> >(locale const&);
02289 
02290   extern template
02291     const collate<wchar_t>& 
02292     use_facet<collate<wchar_t> >(const locale&);
02293 
02294   extern template
02295     const numpunct<wchar_t>& 
02296     use_facet<numpunct<wchar_t> >(const locale&);
02297 
02298   extern template 
02299     const num_put<wchar_t>& 
02300     use_facet<num_put<wchar_t> >(const locale&);
02301 
02302   extern template 
02303     const num_get<wchar_t>& 
02304     use_facet<num_get<wchar_t> >(const locale&);
02305 
02306   extern template
02307     const moneypunct<wchar_t, true>& 
02308     use_facet<moneypunct<wchar_t, true> >(const locale&);
02309 
02310   extern template
02311     const moneypunct<wchar_t, false>& 
02312     use_facet<moneypunct<wchar_t, false> >(const locale&);
02313  
02314   extern template 
02315     const money_put<wchar_t>& 
02316     use_facet<money_put<wchar_t> >(const locale&);
02317 
02318   extern template 
02319     const money_get<wchar_t>& 
02320     use_facet<money_get<wchar_t> >(const locale&);
02321 
02322   extern template
02323     const __timepunct<wchar_t>& 
02324     use_facet<__timepunct<wchar_t> >(const locale&);
02325 
02326   extern template 
02327     const time_put<wchar_t>& 
02328     use_facet<time_put<wchar_t> >(const locale&);
02329 
02330   extern template 
02331     const time_get<wchar_t>& 
02332     use_facet<time_get<wchar_t> >(const locale&);
02333 
02334   extern template 
02335     const messages<wchar_t>& 
02336     use_facet<messages<wchar_t> >(const locale&);
02337 
02338  extern template 
02339     bool
02340     has_facet<ctype<wchar_t> >(const locale&);
02341 
02342   extern template 
02343     bool
02344     has_facet<codecvt<wchar_t, char, mbstate_t> >(const locale&);
02345 
02346   extern template 
02347     bool
02348     has_facet<collate<wchar_t> >(const locale&);
02349 
02350   extern template 
02351     bool
02352     has_facet<numpunct<wchar_t> >(const locale&);
02353 
02354   extern template 
02355     bool
02356     has_facet<num_put<wchar_t> >(const locale&);
02357 
02358   extern template 
02359     bool
02360     has_facet<num_get<wchar_t> >(const locale&);
02361 
02362   extern template 
02363     bool
02364     has_facet<moneypunct<wchar_t> >(const locale&);
02365 
02366   extern template 
02367     bool
02368     has_facet<money_put<wchar_t> >(const locale&);
02369 
02370   extern template 
02371     bool
02372     has_facet<money_get<wchar_t> >(const locale&);
02373 
02374   extern template 
02375     bool
02376     has_facet<__timepunct<wchar_t> >(const locale&);
02377 
02378   extern template 
02379     bool
02380     has_facet<time_put<wchar_t> >(const locale&);
02381 
02382   extern template 
02383     bool
02384     has_facet<time_get<wchar_t> >(const locale&);
02385 
02386   extern template 
02387     bool
02388     has_facet<messages<wchar_t> >(const locale&);
02389 #endif
02390 } // namespace std
02391 
02392 #endif

Generated on Thu Nov 21 03:12:48 2002 for libstdc++-v3 Source by doxygen1.2.18-20021030