| // std::ctype implementation details, newlib version -*- C++ -*- |
| |
| // Copyright (C) 2011-2013 Free Software Foundation, Inc. |
| // |
| // This file is part of the GNU ISO C++ Library. This library is free |
| // software; you can redistribute it and/or modify it under the |
| // terms of the GNU General Public License as published by the |
| // Free Software Foundation; either version 3, or (at your option) |
| // any later version. |
| |
| // This library is distributed in the hope that it will be useful, |
| // but WITHOUT ANY WARRANTY; without even the implied warranty of |
| // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
| // GNU General Public License for more details. |
| |
| // Under Section 7 of GPL version 3, you are granted additional |
| // permissions described in the GCC Runtime Library Exception, version |
| // 3.1, as published by the Free Software Foundation. |
| |
| // You should have received a copy of the GNU General Public License and |
| // a copy of the GCC Runtime Library Exception along with this program; |
| // see the files COPYING3 and COPYING.RUNTIME respectively. If not, see |
| // <http://www.gnu.org/licenses/>. |
| |
| // |
| // ISO C++ 14882: 22.2.1.1.2 ctype virtual functions. |
| // |
| |
| #include <locale> |
| #include <cstdlib> |
| #include <cstring> |
| #include <cstdio> |
| |
| namespace std _GLIBCXX_VISIBILITY(default) |
| { |
| _GLIBCXX_BEGIN_NAMESPACE_VERSION |
| |
| // NB: The other ctype<char> specializations are in src/locale.cc and |
| // various /config/os/* files. |
| ctype_byname<char>::ctype_byname(const char* __s, size_t __refs) |
| : ctype<char>(0, false, __refs) |
| { |
| if (std::strcmp(__s, "C") != 0 && std::strcmp(__s, "POSIX") != 0) |
| { |
| this->_S_destroy_c_locale(this->_M_c_locale_ctype); |
| this->_S_create_c_locale(this->_M_c_locale_ctype, __s); |
| } |
| } |
| |
| ctype_byname<char>::~ctype_byname() |
| { } |
| |
| #ifdef _GLIBCXX_USE_WCHAR_T |
| ctype<wchar_t>::__wmask_type |
| ctype<wchar_t>::_M_convert_to_wmask(const mask __m) const throw() |
| { |
| __wmask_type __ret; |
| switch (__m) |
| { |
| case space: |
| __ret = wctype("space"); |
| break; |
| case print: |
| __ret = wctype("print"); |
| break; |
| case cntrl: |
| __ret = wctype("cntrl"); |
| break; |
| case upper: |
| __ret = wctype("upper"); |
| break; |
| case lower: |
| __ret = wctype("lower"); |
| break; |
| case alpha: |
| __ret = wctype("alpha"); |
| break; |
| case digit: |
| __ret = wctype("digit"); |
| break; |
| case punct: |
| __ret = wctype("punct"); |
| break; |
| case xdigit: |
| __ret = wctype("xdigit"); |
| break; |
| case alnum: |
| __ret = wctype("alnum"); |
| break; |
| case graph: |
| __ret = wctype("graph"); |
| break; |
| default: |
| // Different from the generic version, xdigit and print in |
| // newlib are defined as bitwise-OR result of bitmasks: |
| // xdigit = _X | _N; |
| // print = _P | _U | _L | _N | _B; |
| // in which _X and _B don't correspond to any ctype mask. |
| // In order to get the wmask correctly converted when __m is |
| // equal to _X or _B, the two cases are specifically handled |
| // here. |
| if (__m & xdigit) |
| __ret = wctype("xdigit"); |
| else if (__m & print) |
| __ret = wctype("print"); |
| else |
| __ret = __wmask_type(); |
| } |
| return __ret; |
| }; |
| |
| wchar_t |
| ctype<wchar_t>::do_toupper(wchar_t __c) const |
| { return towupper(__c); } |
| |
| const wchar_t* |
| ctype<wchar_t>::do_toupper(wchar_t* __lo, const wchar_t* __hi) const |
| { |
| while (__lo < __hi) |
| { |
| *__lo = towupper(*__lo); |
| ++__lo; |
| } |
| return __hi; |
| } |
| |
| wchar_t |
| ctype<wchar_t>::do_tolower(wchar_t __c) const |
| { return towlower(__c); } |
| |
| const wchar_t* |
| ctype<wchar_t>::do_tolower(wchar_t* __lo, const wchar_t* __hi) const |
| { |
| while (__lo < __hi) |
| { |
| *__lo = towlower(*__lo); |
| ++__lo; |
| } |
| return __hi; |
| } |
| |
| bool |
| ctype<wchar_t>:: |
| do_is(mask __m, wchar_t __c) const |
| { |
| bool __ret = false; |
| // Newlib C library has a compact encoding that uses 8 bits only. |
| const size_t __bitmasksize = 7; |
| for (size_t __bitcur = 0; __bitcur <= __bitmasksize; ++__bitcur) |
| if (__m & _M_bit[__bitcur] |
| && iswctype(__c, _M_wmask[__bitcur])) |
| { |
| __ret = true; |
| break; |
| } |
| return __ret; |
| } |
| |
| const wchar_t* |
| ctype<wchar_t>:: |
| do_is(const wchar_t* __lo, const wchar_t* __hi, mask* __vec) const |
| { |
| for (; __lo < __hi; ++__vec, ++__lo) |
| { |
| // Newlib C library has a compact encoding that uses 8 bits only. |
| const size_t __bitmasksize = 7; |
| mask __m = 0; |
| for (size_t __bitcur = 0; __bitcur <= __bitmasksize; ++__bitcur) |
| if (iswctype(*__lo, _M_wmask[__bitcur])) |
| __m |= _M_bit[__bitcur]; |
| *__vec = __m; |
| } |
| return __hi; |
| } |
| |
| const wchar_t* |
| ctype<wchar_t>:: |
| do_scan_is(mask __m, const wchar_t* __lo, const wchar_t* __hi) const |
| { |
| while (__lo < __hi && !this->do_is(__m, *__lo)) |
| ++__lo; |
| return __lo; |
| } |
| |
| const wchar_t* |
| ctype<wchar_t>:: |
| do_scan_not(mask __m, const char_type* __lo, const char_type* __hi) const |
| { |
| while (__lo < __hi && this->do_is(__m, *__lo) != 0) |
| ++__lo; |
| return __lo; |
| } |
| |
| wchar_t |
| ctype<wchar_t>:: |
| do_widen(char __c) const |
| { return _M_widen[static_cast<unsigned char>(__c)]; } |
| |
| const char* |
| ctype<wchar_t>:: |
| do_widen(const char* __lo, const char* __hi, wchar_t* __dest) const |
| { |
| while (__lo < __hi) |
| { |
| *__dest = _M_widen[static_cast<unsigned char>(*__lo)]; |
| ++__lo; |
| ++__dest; |
| } |
| return __hi; |
| } |
| |
| char |
| ctype<wchar_t>:: |
| do_narrow(wchar_t __wc, char __dfault) const |
| { |
| if (__wc >= 0 && __wc < 128 && _M_narrow_ok) |
| return _M_narrow[__wc]; |
| const int __c = wctob(__wc); |
| return (__c == EOF ? __dfault : static_cast<char>(__c)); |
| } |
| |
| const wchar_t* |
| ctype<wchar_t>:: |
| do_narrow(const wchar_t* __lo, const wchar_t* __hi, char __dfault, |
| char* __dest) const |
| { |
| if (_M_narrow_ok) |
| while (__lo < __hi) |
| { |
| if (*__lo >= 0 && *__lo < 128) |
| *__dest = _M_narrow[*__lo]; |
| else |
| { |
| const int __c = wctob(*__lo); |
| *__dest = (__c == EOF ? __dfault : static_cast<char>(__c)); |
| } |
| ++__lo; |
| ++__dest; |
| } |
| else |
| while (__lo < __hi) |
| { |
| const int __c = wctob(*__lo); |
| *__dest = (__c == EOF ? __dfault : static_cast<char>(__c)); |
| ++__lo; |
| ++__dest; |
| } |
| return __hi; |
| } |
| |
| void |
| ctype<wchar_t>::_M_initialize_ctype() throw() |
| { |
| wint_t __i; |
| for (__i = 0; __i < 128; ++__i) |
| { |
| const int __c = wctob(__i); |
| if (__c == EOF) |
| break; |
| else |
| _M_narrow[__i] = static_cast<char>(__c); |
| } |
| if (__i == 128) |
| _M_narrow_ok = true; |
| else |
| _M_narrow_ok = false; |
| for (size_t __i = 0; |
| __i < sizeof(_M_widen) / sizeof(wint_t); ++__i) |
| _M_widen[__i] = btowc(__i); |
| |
| for (size_t __i = 0; __i <= 7; ++__i) |
| { |
| _M_bit[__i] = static_cast<mask>(1 << __i); |
| _M_wmask[__i] = _M_convert_to_wmask(_M_bit[__i]); |
| } |
| } |
| #endif // _GLIBCXX_USE_WCHAR_T |
| |
| _GLIBCXX_END_NAMESPACE_VERSION |
| } // namespace |