# vstring.tcc

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    00001 // Versatile string -*- C++ -*-
    00002
    00003 // Copyright (C) 2005, 2006, 2007 Free Software Foundation, Inc.
    00004 //
    00005 // This file is part of the GNU ISO C++ Library.  This library is free
    00006 // software; you can redistribute it and/or modify it under the
    00007 // terms of the GNU General Public License as published by the
    00008 // Free Software Foundation; either version 2, or (at your option)
    00009 // any later version.
    00010
    00011 // This library is distributed in the hope that it will be useful,
    00012 // but WITHOUT ANY WARRANTY; without even the implied warranty of
    00013 // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
    00014 // GNU General Public License for more details.
    00015
    00016 // You should have received a copy of the GNU General Public License along
    00017 // with this library; see the file COPYING.  If not, write to the Free
    00018 // Software Foundation, 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301,
    00019 // USA.
    00020
    00021 // As a special exception, you may use this file as part of a free software
    00022 // library without restriction.  Specifically, if other files instantiate
    00023 // templates or use macros or inline functions from this file, or you compile
    00024 // this file and link it with other files to produce an executable, this
    00025 // file does not by itself cause the resulting executable to be covered by
    00026 // the GNU General Public License.  This exception does not however
    00027 // invalidate any other reasons why the executable file might be covered by
    00028 // the GNU General Public License.
    00029
    00030 /** @file ext/vstring.tcc
    00031  *  This file is a GNU extension to the Standard C++ Library.
    00032  *  This is an internal header file, included by other library headers.
    00033  *  You should not attempt to use it directly.
    00034  */
    00035
    00036 #ifndef _VSTRING_TCC
    00037 #define _VSTRING_TCC 1
    00038
    00039 #pragma GCC system_header
    00040
    00041 #include <cxxabi-forced.h>
    00042
    00043 _GLIBCXX_BEGIN_NAMESPACE(__gnu_cxx)
    00044
    00045   template<typename _CharT, typename _Traits, typename _Alloc,
    00046        template <typename, typename, typename> class _Base>
    00047     const typename __versa_string<_CharT, _Traits, _Alloc, _Base>::size_type
    00048     __versa_string<_CharT, _Traits, _Alloc, _Base>::npos;
    00049
    00050   template<typename _CharT, typename _Traits, typename _Alloc,
    00051        template <typename, typename, typename> class _Base>
    00052     void
    00053     __versa_string<_CharT, _Traits, _Alloc, _Base>::
    00054     resize(size_type __n, _CharT __c)
    00055     {
    00056       const size_type __size = this->size();
    00057       if (__size < __n)
    00058     this->append(__n - __size, __c);
    00059       else if (__n < __size)
    00060     this->_M_erase(__n, __size - __n);
    00061     }
    00062
    00063   template<typename _CharT, typename _Traits, typename _Alloc,
    00064        template <typename, typename, typename> class _Base>
    00065     __versa_string<_CharT, _Traits, _Alloc, _Base>&
    00066     __versa_string<_CharT, _Traits, _Alloc, _Base>::
    00067     _M_append(const _CharT* __s, size_type __n)
    00068     {
    00069       const size_type __len = __n + this->size();
    00070
    00071       if (__len <= this->capacity() && !this->_M_is_shared())
    00072     {
    00073       if (__n)
    00074         this->_S_copy(this->_M_data() + this->size(), __s, __n);
    00075     }
    00076       else
    00077     this->_M_mutate(this->size(), size_type(0), __s, __n);
    00078
    00079       this->_M_set_length(__len);
    00080       return *this;
    00081     }
    00082
    00083   template<typename _CharT, typename _Traits, typename _Alloc,
    00084        template <typename, typename, typename> class _Base>
    00085     template<typename _InputIterator>
    00086       __versa_string<_CharT, _Traits, _Alloc, _Base>&
    00087       __versa_string<_CharT, _Traits, _Alloc, _Base>::
    00088       _M_replace_dispatch(iterator __i1, iterator __i2, _InputIterator __k1,
    00089               _InputIterator __k2, std::__false_type)
    00090       {
    00091     const __versa_string __s(__k1, __k2);
    00092     const size_type __n1 = __i2 - __i1;
    00093     return _M_replace(__i1 - _M_ibegin(), __n1, __s._M_data(),
    00094               __s.size());
    00095       }
    00096
    00097   template<typename _CharT, typename _Traits, typename _Alloc,
    00098        template <typename, typename, typename> class _Base>
    00099     __versa_string<_CharT, _Traits, _Alloc, _Base>&
    00100     __versa_string<_CharT, _Traits, _Alloc, _Base>::
    00101     _M_replace_aux(size_type __pos1, size_type __n1, size_type __n2,
    00102            _CharT __c)
    00103     {
    00104       _M_check_length(__n1, __n2, "__versa_string::_M_replace_aux");
    00105
    00106       const size_type __old_size = this->size();
    00107       const size_type __new_size = __old_size + __n2 - __n1;
    00108
    00109       if (__new_size <= this->capacity() && !this->_M_is_shared())
    00110     {
    00111       _CharT* __p = this->_M_data() + __pos1;
    00112
    00113       const size_type __how_much = __old_size - __pos1 - __n1;
    00114       if (__how_much && __n1 != __n2)
    00115         this->_S_move(__p + __n2, __p + __n1, __how_much);
    00116     }
    00117       else
    00118     this->_M_mutate(__pos1, __n1, 0, __n2);
    00119
    00120       if (__n2)
    00121     this->_S_assign(this->_M_data() + __pos1, __n2, __c);
    00122
    00123       this->_M_set_length(__new_size);
    00124       return *this;
    00125     }
    00126
    00127   template<typename _CharT, typename _Traits, typename _Alloc,
    00128        template <typename, typename, typename> class _Base>
    00129     __versa_string<_CharT, _Traits, _Alloc, _Base>&
    00130     __versa_string<_CharT, _Traits, _Alloc, _Base>::
    00131     _M_replace(size_type __pos, size_type __len1, const _CharT* __s,
    00132            const size_type __len2)
    00133     {
    00134       _M_check_length(__len1, __len2, "__versa_string::_M_replace");
    00135
    00136       const size_type __old_size = this->size();
    00137       const size_type __new_size = __old_size + __len2 - __len1;
    00138
    00139       if (__new_size <= this->capacity() && !this->_M_is_shared())
    00140     {
    00141       _CharT* __p = this->_M_data() + __pos;
    00142
    00143       const size_type __how_much = __old_size - __pos - __len1;
    00144       if (_M_disjunct(__s))
    00145         {
    00146           if (__how_much && __len1 != __len2)
    00147         this->_S_move(__p + __len2, __p + __len1, __how_much);
    00148           if (__len2)
    00149         this->_S_copy(__p, __s, __len2);
    00150         }
    00151       else
    00152         {
    00153           // Work in-place.
    00154           if (__len2 && __len2 <= __len1)
    00155         this->_S_move(__p, __s, __len2);
    00156           if (__how_much && __len1 != __len2)
    00157         this->_S_move(__p + __len2, __p + __len1, __how_much);
    00158           if (__len2 > __len1)
    00159         {
    00160           if (__s + __len2 <= __p + __len1)
    00161             this->_S_move(__p, __s, __len2);
    00162           else if (__s >= __p + __len1)
    00163             this->_S_copy(__p, __s + __len2 - __len1, __len2);
    00164           else
    00165             {
    00166               const size_type __nleft = (__p + __len1) - __s;
    00167               this->_S_move(__p, __s, __nleft);
    00168               this->_S_copy(__p + __nleft, __p + __len2,
    00169                     __len2 - __nleft);
    00170             }
    00171         }
    00172         }
    00173     }
    00174       else
    00175     this->_M_mutate(__pos, __len1, __s, __len2);
    00176
    00177       this->_M_set_length(__new_size);
    00178       return *this;
    00179     }
    00180
    00181   template<typename _CharT, typename _Traits, typename _Alloc,
    00182        template <typename, typename, typename> class _Base>
    00183     __versa_string<_CharT, _Traits, _Alloc, _Base>
    00184     operator+(const __versa_string<_CharT, _Traits, _Alloc, _Base>& __lhs,
    00185           const __versa_string<_CharT, _Traits, _Alloc, _Base>& __rhs)
    00186     {
    00187       __versa_string<_CharT, _Traits, _Alloc, _Base> __str;
    00188       __str.reserve(__lhs.size() + __rhs.size());
    00189       __str.append(__lhs);
    00190       __str.append(__rhs);
    00191       return __str;
    00192     }
    00193
    00194   template<typename _CharT, typename _Traits, typename _Alloc,
    00195        template <typename, typename, typename> class _Base>
    00196     __versa_string<_CharT, _Traits, _Alloc, _Base>
    00197     operator+(const _CharT* __lhs,
    00198           const __versa_string<_CharT, _Traits, _Alloc, _Base>& __rhs)
    00199     {
    00200       __glibcxx_requires_string(__lhs);
    00201       typedef __versa_string<_CharT, _Traits, _Alloc, _Base> __string_type;
    00202       typedef typename __string_type::size_type   __size_type;
    00203       const __size_type __len = _Traits::length(__lhs);
    00204       __string_type __str;
    00205       __str.reserve(__len + __rhs.size());
    00206       __str.append(__lhs, __len);
    00207       __str.append(__rhs);
    00208       return __str;
    00209     }
    00210
    00211   template<typename _CharT, typename _Traits, typename _Alloc,
    00212        template <typename, typename, typename> class _Base>
    00213     __versa_string<_CharT, _Traits, _Alloc, _Base>
    00214     operator+(_CharT __lhs,
    00215           const __versa_string<_CharT, _Traits, _Alloc, _Base>& __rhs)
    00216     {
    00217       __versa_string<_CharT, _Traits, _Alloc, _Base> __str;
    00218       __str.reserve(__rhs.size() + 1);
    00219       __str.push_back(__lhs);
    00220       __str.append(__rhs);
    00221       return __str;
    00222     }
    00223
    00224   template<typename _CharT, typename _Traits, typename _Alloc,
    00225        template <typename, typename, typename> class _Base>
    00226     __versa_string<_CharT, _Traits, _Alloc, _Base>
    00227     operator+(const __versa_string<_CharT, _Traits, _Alloc, _Base>& __lhs,
    00228           const _CharT* __rhs)
    00229     {
    00230       __glibcxx_requires_string(__rhs);
    00231       typedef __versa_string<_CharT, _Traits, _Alloc, _Base> __string_type;
    00232       typedef typename __string_type::size_type   __size_type;
    00233       const __size_type __len = _Traits::length(__rhs);
    00234       __string_type __str;
    00235       __str.reserve(__lhs.size() + __len);
    00236       __str.append(__lhs);
    00237       __str.append(__rhs, __len);
    00238       return __str;
    00239     }
    00240
    00241   template<typename _CharT, typename _Traits, typename _Alloc,
    00242        template <typename, typename, typename> class _Base>
    00243     __versa_string<_CharT, _Traits, _Alloc, _Base>
    00244     operator+(const __versa_string<_CharT, _Traits, _Alloc, _Base>& __lhs,
    00245           _CharT __rhs)
    00246     {
    00247       __versa_string<_CharT, _Traits, _Alloc, _Base> __str;
    00248       __str.reserve(__lhs.size() + 1);
    00249       __str.append(__lhs);
    00250       __str.push_back(__rhs);
    00251       return __str;
    00252     }
    00253
    00254   template<typename _CharT, typename _Traits, typename _Alloc,
    00255        template <typename, typename, typename> class _Base>
    00256     typename __versa_string<_CharT, _Traits, _Alloc, _Base>::size_type
    00257     __versa_string<_CharT, _Traits, _Alloc, _Base>::
    00258     copy(_CharT* __s, size_type __n, size_type __pos) const
    00259     {
    00260       _M_check(__pos, "__versa_string::copy");
    00261       __n = _M_limit(__pos, __n);
    00262       __glibcxx_requires_string_len(__s, __n);
    00263       if (__n)
    00264     this->_S_copy(__s, this->_M_data() + __pos, __n);
    00265       // 21.3.5.7 par 3: do not append null.  (good.)
    00266       return __n;
    00267     }
    00268
    00269   template<typename _CharT, typename _Traits, typename _Alloc,
    00270        template <typename, typename, typename> class _Base>
    00271     typename __versa_string<_CharT, _Traits, _Alloc, _Base>::size_type
    00272     __versa_string<_CharT, _Traits, _Alloc, _Base>::
    00273     find(const _CharT* __s, size_type __pos, size_type __n) const
    00274     {
    00275       __glibcxx_requires_string_len(__s, __n);
    00276       const size_type __size = this->size();
    00277       const _CharT* __data = this->_M_data();
    00278
    00279       if (__n == 0)
    00280     return __pos <= __size ? __pos : npos;
    00281
    00282       if (__n <= __size)
    00283     {
    00284       for (; __pos <= __size - __n; ++__pos)
    00285         if (traits_type::eq(__data[__pos], __s[0])
    00286         && traits_type::compare(__data + __pos + 1,
    00287                     __s + 1, __n - 1) == 0)
    00288           return __pos;
    00289     }
    00290       return npos;
    00291     }
    00292
    00293   template<typename _CharT, typename _Traits, typename _Alloc,
    00294        template <typename, typename, typename> class _Base>
    00295     typename __versa_string<_CharT, _Traits, _Alloc, _Base>::size_type
    00296     __versa_string<_CharT, _Traits, _Alloc, _Base>::
    00297     find(_CharT __c, size_type __pos) const
    00298     {
    00299       size_type __ret = npos;
    00300       const size_type __size = this->size();
    00301       if (__pos < __size)
    00302     {
    00303       const _CharT* __data = this->_M_data();
    00304       const size_type __n = __size - __pos;
    00305       const _CharT* __p = traits_type::find(__data + __pos, __n, __c);
    00306       if (__p)
    00307         __ret = __p - __data;
    00308     }
    00309       return __ret;
    00310     }
    00311
    00312   template<typename _CharT, typename _Traits, typename _Alloc,
    00313        template <typename, typename, typename> class _Base>
    00314     typename __versa_string<_CharT, _Traits, _Alloc, _Base>::size_type
    00315     __versa_string<_CharT, _Traits, _Alloc, _Base>::
    00316     rfind(const _CharT* __s, size_type __pos, size_type __n) const
    00317     {
    00318       __glibcxx_requires_string_len(__s, __n);
    00319       const size_type __size = this->size();
    00320       if (__n <= __size)
    00321     {
    00322       __pos = std::min(size_type(__size - __n), __pos);
    00323       const _CharT* __data = this->_M_data();
    00324       do
    00325         {
    00326           if (traits_type::compare(__data + __pos, __s, __n) == 0)
    00327         return __pos;
    00328         }
    00329       while (__pos-- > 0);
    00330     }
    00331       return npos;
    00332     }
    00333
    00334   template<typename _CharT, typename _Traits, typename _Alloc,
    00335        template <typename, typename, typename> class _Base>
    00336     typename __versa_string<_CharT, _Traits, _Alloc, _Base>::size_type
    00337     __versa_string<_CharT, _Traits, _Alloc, _Base>::
    00338     rfind(_CharT __c, size_type __pos) const
    00339     {
    00340       size_type __size = this->size();
    00341       if (__size)
    00342     {
    00343       if (--__size > __pos)
    00344         __size = __pos;
    00345       for (++__size; __size-- > 0; )
    00346         if (traits_type::eq(this->_M_data()[__size], __c))
    00347           return __size;
    00348     }
    00349       return npos;
    00350     }
    00351
    00352   template<typename _CharT, typename _Traits, typename _Alloc,
    00353        template <typename, typename, typename> class _Base>
    00354     typename __versa_string<_CharT, _Traits, _Alloc, _Base>::size_type
    00355     __versa_string<_CharT, _Traits, _Alloc, _Base>::
    00356     find_first_of(const _CharT* __s, size_type __pos, size_type __n) const
    00357     {
    00358       __glibcxx_requires_string_len(__s, __n);
    00359       for (; __n && __pos < this->size(); ++__pos)
    00360     {
    00361       const _CharT* __p = traits_type::find(__s, __n,
    00362                         this->_M_data()[__pos]);
    00363       if (__p)
    00364         return __pos;
    00365     }
    00366       return npos;
    00367     }
    00368
    00369   template<typename _CharT, typename _Traits, typename _Alloc,
    00370        template <typename, typename, typename> class _Base>
    00371     typename __versa_string<_CharT, _Traits, _Alloc, _Base>::size_type
    00372     __versa_string<_CharT, _Traits, _Alloc, _Base>::
    00373     find_last_of(const _CharT* __s, size_type __pos, size_type __n) const
    00374     {
    00375       __glibcxx_requires_string_len(__s, __n);
    00376       size_type __size = this->size();
    00377       if (__size && __n)
    00378     {
    00379       if (--__size > __pos)
    00380         __size = __pos;
    00381       do
    00382         {
    00383           if (traits_type::find(__s, __n, this->_M_data()[__size]))
    00384         return __size;
    00385         }
    00386       while (__size-- != 0);
    00387     }
    00388       return npos;
    00389     }
    00390
    00391   template<typename _CharT, typename _Traits, typename _Alloc,
    00392        template <typename, typename, typename> class _Base>
    00393     typename __versa_string<_CharT, _Traits, _Alloc, _Base>::size_type
    00394     __versa_string<_CharT, _Traits, _Alloc, _Base>::
    00395     find_first_not_of(const _CharT* __s, size_type __pos, size_type __n) const
    00396     {
    00397       __glibcxx_requires_string_len(__s, __n);
    00398       for (; __pos < this->size(); ++__pos)
    00399     if (!traits_type::find(__s, __n, this->_M_data()[__pos]))
    00400       return __pos;
    00401       return npos;
    00402     }
    00403
    00404   template<typename _CharT, typename _Traits, typename _Alloc,
    00405        template <typename, typename, typename> class _Base>
    00406     typename __versa_string<_CharT, _Traits, _Alloc, _Base>::size_type
    00407     __versa_string<_CharT, _Traits, _Alloc, _Base>::
    00408     find_first_not_of(_CharT __c, size_type __pos) const
    00409     {
    00410       for (; __pos < this->size(); ++__pos)
    00411     if (!traits_type::eq(this->_M_data()[__pos], __c))
    00412       return __pos;
    00413       return npos;
    00414     }
    00415
    00416   template<typename _CharT, typename _Traits, typename _Alloc,
    00417        template <typename, typename, typename> class _Base>
    00418     typename __versa_string<_CharT, _Traits, _Alloc, _Base>::size_type
    00419     __versa_string<_CharT, _Traits, _Alloc, _Base>::
    00420     find_last_not_of(const _CharT* __s, size_type __pos, size_type __n) const
    00421     {
    00422       __glibcxx_requires_string_len(__s, __n);
    00423       size_type __size = this->size();
    00424       if (__size)
    00425     {
    00426       if (--__size > __pos)
    00427         __size = __pos;
    00428       do
    00429         {
    00430           if (!traits_type::find(__s, __n, this->_M_data()[__size]))
    00431         return __size;
    00432         }
    00433       while (__size--);
    00434     }
    00435       return npos;
    00436     }
    00437
    00438   template<typename _CharT, typename _Traits, typename _Alloc,
    00439        template <typename, typename, typename> class _Base>
    00440     typename __versa_string<_CharT, _Traits, _Alloc, _Base>::size_type
    00441     __versa_string<_CharT, _Traits, _Alloc, _Base>::
    00442     find_last_not_of(_CharT __c, size_type __pos) const
    00443     {
    00444       size_type __size = this->size();
    00445       if (__size)
    00446     {
    00447       if (--__size > __pos)
    00448         __size = __pos;
    00449       do
    00450         {
    00451           if (!traits_type::eq(this->_M_data()[__size], __c))
    00452         return __size;
    00453         }
    00454       while (__size--);
    00455     }
    00456       return npos;
    00457     }
    00458
    00459   template<typename _CharT, typename _Traits, typename _Alloc,
    00460        template <typename, typename, typename> class _Base>
    00461     int
    00462     __versa_string<_CharT, _Traits, _Alloc, _Base>::
    00463     compare(size_type __pos, size_type __n, const __versa_string& __str) const
    00464     {
    00465       _M_check(__pos, "__versa_string::compare");
    00466       __n = _M_limit(__pos, __n);
    00467       const size_type __osize = __str.size();
    00468       const size_type __len = std::min(__n, __osize);
    00469       int __r = traits_type::compare(this->_M_data() + __pos,
    00470                      __str.data(), __len);
    00471       if (!__r)
    00472     __r = _S_compare(__n, __osize);
    00473       return __r;
    00474     }
    00475
    00476   template<typename _CharT, typename _Traits, typename _Alloc,
    00477        template <typename, typename, typename> class _Base>
    00478     int
    00479     __versa_string<_CharT, _Traits, _Alloc, _Base>::
    00480     compare(size_type __pos1, size_type __n1, const __versa_string& __str,
    00481         size_type __pos2, size_type __n2) const
    00482     {
    00483       _M_check(__pos1, "__versa_string::compare");
    00484       __str._M_check(__pos2, "__versa_string::compare");
    00485       __n1 = _M_limit(__pos1, __n1);
    00486       __n2 = __str._M_limit(__pos2, __n2);
    00487       const size_type __len = std::min(__n1, __n2);
    00488       int __r = traits_type::compare(this->_M_data() + __pos1,
    00489                      __str.data() + __pos2, __len);
    00490       if (!__r)
    00491     __r = _S_compare(__n1, __n2);
    00492       return __r;
    00493     }
    00494
    00495   template<typename _CharT, typename _Traits, typename _Alloc,
    00496        template <typename, typename, typename> class _Base>
    00497     int
    00498     __versa_string<_CharT, _Traits, _Alloc, _Base>::
    00499     compare(const _CharT* __s) const
    00500     {
    00501       __glibcxx_requires_string(__s);
    00502       const size_type __size = this->size();
    00503       const size_type __osize = traits_type::length(__s);
    00504       const size_type __len = std::min(__size, __osize);
    00505       int __r = traits_type::compare(this->_M_data(), __s, __len);
    00506       if (!__r)
    00507     __r = _S_compare(__size, __osize);
    00508       return __r;
    00509     }
    00510
    00511   template<typename _CharT, typename _Traits, typename _Alloc,
    00512        template <typename, typename, typename> class _Base>
    00513     int
    00514     __versa_string <_CharT, _Traits, _Alloc, _Base>::
    00515     compare(size_type __pos, size_type __n1, const _CharT* __s) const
    00516     {
    00517       __glibcxx_requires_string(__s);
    00518       _M_check(__pos, "__versa_string::compare");
    00519       __n1 = _M_limit(__pos, __n1);
    00520       const size_type __osize = traits_type::length(__s);
    00521       const size_type __len = std::min(__n1, __osize);
    00522       int __r = traits_type::compare(this->_M_data() + __pos, __s, __len);
    00523       if (!__r)
    00524     __r = _S_compare(__n1, __osize);
    00525       return __r;
    00526     }
    00527
    00528   template<typename _CharT, typename _Traits, typename _Alloc,
    00529        template <typename, typename, typename> class _Base>
    00530     int
    00531     __versa_string <_CharT, _Traits, _Alloc, _Base>::
    00532     compare(size_type __pos, size_type __n1, const _CharT* __s,
    00533         size_type __n2) const
    00534     {
    00535       __glibcxx_requires_string_len(__s, __n2);
    00536       _M_check(__pos, "__versa_string::compare");
    00537       __n1 = _M_limit(__pos, __n1);
    00538       const size_type __len = std::min(__n1, __n2);
    00539       int __r = traits_type::compare(this->_M_data() + __pos, __s, __len);
    00540       if (!__r)
    00541     __r = _S_compare(__n1, __n2);
    00542       return __r;
    00543     }
    00544
    00545 _GLIBCXX_END_NAMESPACE
    00546
    00547 _GLIBCXX_BEGIN_NAMESPACE(std)
    00548
    00549   template<typename _CharT, typename _Traits, typename _Alloc,
    00550            template <typename, typename, typename> class _Base>
    00551     basic_istream<_CharT, _Traits>&
    00552     operator>>(basic_istream<_CharT, _Traits>& __in,
    00553            __gnu_cxx::__versa_string<_CharT, _Traits,
    00554                                      _Alloc, _Base>& __str)
    00555     {
    00556       typedef basic_istream<_CharT, _Traits>            __istream_type;
    00557       typedef typename __istream_type::ios_base         __ios_base;
    00558       typedef __gnu_cxx::__versa_string<_CharT, _Traits, _Alloc, _Base>
    00559                                                     __string_type;
    00560       typedef typename __istream_type::int_type     __int_type;
    00561       typedef typename __string_type::size_type     __size_type;
    00562       typedef ctype<_CharT>             __ctype_type;
    00563       typedef typename __ctype_type::ctype_base         __ctype_base;
    00564
    00565       __size_type __extracted = 0;
    00566       typename __ios_base::iostate __err = __ios_base::goodbit;
    00567       typename __istream_type::sentry __cerb(__in, false);
    00568       if (__cerb)
    00569     {
    00570       try
    00571         {
    00572           // Avoid reallocation for common case.
    00573           __str.erase();
    00574           _CharT __buf[128];
    00575           __size_type __len = 0;
    00576           const streamsize __w = __in.width();
    00577           const __size_type __n = __w > 0 ? static_cast<__size_type>(__w)
    00578                                       : __str.max_size();
    00579           const __ctype_type& __ct = use_facet<__ctype_type>(__in.getloc());
    00580           const __int_type __eof = _Traits::eof();
    00581           __int_type __c = __in.rdbuf()->sgetc();
    00582
    00583           while (__extracted < __n
    00584              && !_Traits::eq_int_type(__c, __eof)
    00585              && !__ct.is(__ctype_base::space,
    00586                  _Traits::to_char_type(__c)))
    00587         {
    00588           if (__len == sizeof(__buf) / sizeof(_CharT))
    00589             {
    00590               __str.append(__buf, sizeof(__buf) / sizeof(_CharT));
    00591               __len = 0;
    00592             }
    00593           __buf[__len++] = _Traits::to_char_type(__c);
    00594           ++__extracted;
    00595           __c = __in.rdbuf()->snextc();
    00596         }
    00597           __str.append(__buf, __len);
    00598
    00599           if (_Traits::eq_int_type(__c, __eof))
    00600         __err |= __ios_base::eofbit;
    00601           __in.width(0);
    00602         }
    00603       catch(__cxxabiv1::__forced_unwind&)
    00604         {
    00605           __in._M_setstate(__ios_base::badbit);
    00606           __throw_exception_again;
    00607         }
    00608       catch(...)
    00609         {
    00610           // _GLIBCXX_RESOLVE_LIB_DEFECTS
    00611           // 91. Description of operator>> and getline() for string<>
    00612           // might cause endless loop
    00613           __in._M_setstate(__ios_base::badbit);
    00614         }
    00615     }
    00616       // 211.  operator>>(istream&, string&) doesn't set failbit
    00617       if (!__extracted)
    00618     __err |= __ios_base::failbit;
    00619       if (__err)
    00620     __in.setstate(__err);
    00621       return __in;
    00622     }
    00623
    00624   template<typename _CharT, typename _Traits, typename _Alloc,
    00625            template <typename, typename, typename> class _Base>
    00626     basic_istream<_CharT, _Traits>&
    00627     getline(basic_istream<_CharT, _Traits>& __in,
    00628         __gnu_cxx::__versa_string<_CharT, _Traits, _Alloc, _Base>& __str,
    00629         _CharT __delim)
    00630     {
    00631       typedef basic_istream<_CharT, _Traits>            __istream_type;
    00632       typedef typename __istream_type::ios_base         __ios_base;
    00633       typedef __gnu_cxx::__versa_string<_CharT, _Traits, _Alloc, _Base>
    00634                                                     __string_type;
    00635       typedef typename __istream_type::int_type     __int_type;
    00636       typedef typename __string_type::size_type     __size_type;
    00637
    00638       __size_type __extracted = 0;
    00639       const __size_type __n = __str.max_size();
    00640       typename __ios_base::iostate __err = __ios_base::goodbit;
    00641       typename __istream_type::sentry __cerb(__in, true);
    00642       if (__cerb)
    00643     {
    00644       try
    00645         {
    00646           // Avoid reallocation for common case.
    00647           __str.erase();
    00648           _CharT __buf[128];
    00649           __size_type __len = 0;
    00650           const __int_type __idelim = _Traits::to_int_type(__delim);
    00651           const __int_type __eof = _Traits::eof();
    00652           __int_type __c = __in.rdbuf()->sgetc();
    00653
    00654           while (__extracted < __n
    00655              && !_Traits::eq_int_type(__c, __eof)
    00656              && !_Traits::eq_int_type(__c, __idelim))
    00657         {
    00658           if (__len == sizeof(__buf) / sizeof(_CharT))
    00659             {
    00660               __str.append(__buf, sizeof(__buf) / sizeof(_CharT));
    00661               __len = 0;
    00662             }
    00663           __buf[__len++] = _Traits::to_char_type(__c);
    00664           ++__extracted;
    00665           __c = __in.rdbuf()->snextc();
    00666         }
    00667           __str.append(__buf, __len);
    00668
    00669           if (_Traits::eq_int_type(__c, __eof))
    00670         __err |= __ios_base::eofbit;
    00671           else if (_Traits::eq_int_type(__c, __idelim))
    00672         {
    00673           ++__extracted;
    00674           __in.rdbuf()->sbumpc();
    00675         }
    00676           else
    00677         __err |= __ios_base::failbit;
    00678         }
    00679       catch(__cxxabiv1::__forced_unwind&)
    00680         {
    00681           __in._M_setstate(__ios_base::badbit);
    00682           __throw_exception_again;
    00683         }
    00684       catch(...)
    00685         {
    00686           // _GLIBCXX_RESOLVE_LIB_DEFECTS
    00687           // 91. Description of operator>> and getline() for string<>
    00688           // might cause endless loop
    00689           __in._M_setstate(__ios_base::badbit);
    00690         }
    00691     }
    00692       if (!__extracted)
    00693     __err |= __ios_base::failbit;
    00694       if (__err)
    00695     __in.setstate(__err);
    00696       return __in;
    00697     }
    00698
    00699 _GLIBCXX_END_NAMESPACE
    00700
    00701 #endif // _VSTRING_TCC