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// POD character, std::char_traits specialization -*- C++ -*-
// Copyright (C) 2002, 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.
// Gabriel Dos Reis <gdr@integrable-solutions.net>
// Benjamin Kosnik <bkoz@redhat.com>
#ifndef _POD_CHAR_TRAITS_H
#define _POD_CHAR_TRAITS_H 1
#include <string>
namespace __gnu_cxx
{
template<typename V, typename I>
struct character
{
typedef V value_type;
typedef I int_type;
value_type value;
};
template<typename V, typename I>
inline bool
operator==(const character<V, I>& lhs, const character<V, I>& rhs)
{ return lhs.value == rhs.value; }
template<typename V, typename I>
inline bool
operator<(const character<V, I>& lhs, const character<V, I>& rhs)
{ return lhs.value < rhs.value; }
} // namespace __gnu_cxx
namespace std
{
// Provide std::char_traits specialization.
template<typename V, typename I>
struct char_traits<__gnu_cxx::character<V, I> >
{
typedef __gnu_cxx::character<V, I> char_type;
// NB: This type should be bigger than char_type, so as to
// properly hold EOF values in addition to the full range of
// char_type values.
typedef typename char_type::int_type int_type;
typedef streampos pos_type;
typedef streamoff off_type;
typedef mbstate_t state_type;
static void
assign(char_type& __c1, const char_type& __c2)
{ __c1 = __c2; }
static bool
eq(const char_type& __c1, const char_type& __c2)
{ return __c1 == __c2; }
static bool
lt(const char_type& __c1, const char_type& __c2)
{ return __c1 < __c2; }
static int
compare(const char_type* __s1, const char_type* __s2, size_t __n)
{
for (size_t __i = 0; __i < __n; ++__i)
if (!eq(__s1[__i], __s2[__i]))
return lt(__s1[__i], __s2[__i]) ? -1 : 1;
return 0;
}
static size_t
length(const char_type* __s)
{
const char_type* __p = __s;
while (*__p)
++__p;
return (__p - __s);
}
static const char_type*
find(const char_type* __s, size_t __n, const char_type& __a)
{
for (const char_type* __p = __s; size_t(__p - __s) < __n; ++__p)
if (*__p == __a)
return __p;
return 0;
}
static char_type*
move(char_type* __s1, const char_type* __s2, size_t __n)
{ return (char_type*) memmove(__s1, __s2, __n * sizeof(char_type)); }
static char_type*
copy(char_type* __s1, const char_type* __s2, size_t __n)
{ return (char_type*) memcpy(__s1, __s2, __n * sizeof(char_type)); }
static char_type*
assign(char_type* __s, size_t __n, char_type __a)
{
for (char_type* __p = __s; __p < __s + __n; ++__p)
assign(*__p, __a);
return __s;
}
static char_type
to_char_type(const int_type& __c)
{
char_type __r = { __c };
return __r;
}
static int_type
to_int_type(const char_type& __c)
{ return int_type(__c.value); }
static bool
eq_int_type(const int_type& __c1, const int_type& __c2)
{ return __c1 == __c2; }
static int_type
eof() { return static_cast<int_type>(-1); }
static int_type
not_eof(const int_type& __c)
{ return eq_int_type(__c, eof()) ? int_type(0) : __c; }
};
}
#endif
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