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// Locale support -*- C++ -*-
// Copyright (C) 2000, 2003 Free Software Foundation, Inc.
//
// This file is part of the GNU ISO C++ Library. This library is free
// software; you can redistribute it and/or modify it under the
// terms of the GNU General Public License as published by the
// Free Software Foundation; either version 2, or (at your option)
// any later version.
// This library is distributed in the hope that it will be useful,
// but WITHOUT ANY WARRANTY; without even the implied warranty of
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
// GNU General Public License for more details.
// You should have received a copy of the GNU General Public License along
// with this library; see the file COPYING. If not, write to the Free
// Software Foundation, 59 Temple Place - Suite 330, Boston, MA 02111-1307,
// USA.
// As a special exception, you may use this file as part of a free software
// library without restriction. Specifically, if other files instantiate
// templates or use macros or inline functions from this file, or you compile
// this file and link it with other files to produce an executable, this
// file does not by itself cause the resulting executable to be covered by
// the GNU General Public License. This exception does not however
// invalidate any other reasons why the executable file might be covered by
// the GNU General Public License.
//
// ISO C++ 14882: 22.1 Locales
//
// ctype bits to be inlined go here. Non-inlinable (ie virtual do_*)
// functions go in ctype.cc
// The following definitions are portable, but insanely slow. If one
// cares at all about performance, then specialized ctype
// functionality should be added for the native os in question: see
// the config/os/bits/ctype_*.h files.
// Constructing a synthetic "C" table should be seriously considered...
bool
ctype<char>::
is(mask __m, char __c) const
{
if (_M_table)
return _M_table[static_cast<unsigned char>(__c)] & __m;
else
{
bool __ret = true;
bool __any_match = false;
const size_t __bitmasksize = 10;
size_t __bitcur = 0; // Lowest bitmask in ctype_base == 0
for (;__ret && __bitcur <= __bitmasksize; ++__bitcur)
{
mask __bit = static_cast<mask>(1 << __bitcur);
if (__m & __bit)
{
__any_match = true;
bool __testis;
switch (__bit)
{
case space:
__testis = isspace(__c);
break;
case print:
__testis = isprint(__c);
break;
case cntrl:
__testis = iscntrl(__c);
break;
case upper:
__testis = isupper(__c);
break;
case lower:
__testis = islower(__c);
break;
case alpha:
__testis = isalpha(__c);
break;
case digit:
__testis = isdigit(__c);
break;
case punct:
__testis = ispunct(__c);
break;
case xdigit:
__testis = isxdigit(__c);
break;
case alnum:
__testis = isalnum(__c);
break;
case graph:
__testis = isgraph(__c);
break;
default:
__testis = false;
break;
}
__ret &= __testis;
}
}
return __ret & __any_match;
}
}
const char*
ctype<char>::
is(const char* __low, const char* __high, mask* __vec) const
{
if (_M_table)
while (__low < __high)
*__vec++ = _M_table[static_cast<unsigned char>(*__low++)];
else
{
// Highest bitmask in ctype_base == 10.
const size_t __bitmasksize = 10;
for (;__low < __high; ++__vec, ++__low)
{
mask __m = 0;
// Lowest bitmask in ctype_base == 0
size_t __i = 0;
for (;__i <= __bitmasksize; ++__i)
{
mask __bit = static_cast<mask>(1 << __i);
if (this->is(__bit, *__low))
__m |= __bit;
}
*__vec = __m;
}
}
return __high;
}
const char*
ctype<char>::
scan_is(mask __m, const char* __low, const char* __high) const
{
if (_M_table)
while (__low < __high
&& !(_M_table[static_cast<unsigned char>(*__low)] & __m))
++__low;
else
while (__low < __high && !this->is(__m, *__low))
++__low;
return __low;
}
const char*
ctype<char>::
scan_not(mask __m, const char* __low, const char* __high) const
{
if (_M_table)
while (__low < __high
&& (_M_table[static_cast<unsigned char>(*__low)] & __m) != 0)
++__low;
else
while (__low < __high && this->is(__m, *__low) != 0)
++__low;
return __low;
}
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