forked from KolibriOS/kolibrios
276 lines
8.1 KiB
C++
276 lines
8.1 KiB
C++
// Character Traits for use by standard string and iostream -*- C++ -*-
|
|
|
|
// Copyright (C) 1997, 1998, 1999, 2000, 2001 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: 21 Strings library
|
|
//
|
|
|
|
#ifndef _CPP_BITS_CHAR_TRAITS_H
|
|
#define _CPP_BITS_CHAR_TRAITS_H 1
|
|
|
|
#pragma GCC system_header
|
|
|
|
#include <bits/std_cstring.h> // For memmove, memset, memchr
|
|
#include <bits/fpos.h> // For streampos
|
|
|
|
namespace std
|
|
{
|
|
// 21.1.2 Basis for explicit _Traits specialization
|
|
// NB: That for any given actual character type this definition is
|
|
// probably wrong.
|
|
template<class _CharT>
|
|
struct char_traits
|
|
{
|
|
typedef _CharT char_type;
|
|
// Unsigned as wint_t in unsigned.
|
|
typedef unsigned long 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)
|
|
{ return char_type(__c); }
|
|
|
|
static int_type
|
|
to_int_type(const char_type& __c) { return int_type(__c); }
|
|
|
|
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; }
|
|
};
|
|
|
|
|
|
// 21.1.4 char_traits specializations
|
|
template<>
|
|
struct char_traits<char>
|
|
{
|
|
typedef char char_type;
|
|
typedef int 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)
|
|
{ return memcmp(__s1, __s2, __n); }
|
|
|
|
static size_t
|
|
length(const char_type* __s)
|
|
{ return strlen(__s); }
|
|
|
|
static const char_type*
|
|
find(const char_type* __s, size_t __n, const char_type& __a)
|
|
{ return static_cast<const char_type*>(memchr(__s, __a, __n)); }
|
|
|
|
static char_type*
|
|
move(char_type* __s1, const char_type* __s2, size_t __n)
|
|
{ return static_cast<char_type*>(memmove(__s1, __s2, __n)); }
|
|
|
|
static char_type*
|
|
copy(char_type* __s1, const char_type* __s2, size_t __n)
|
|
{ return static_cast<char_type*>(memcpy(__s1, __s2, __n)); }
|
|
|
|
static char_type*
|
|
assign(char_type* __s, size_t __n, char_type __a)
|
|
{ return static_cast<char_type*>(memset(__s, __a, __n)); }
|
|
|
|
static char_type
|
|
to_char_type(const int_type& __c)
|
|
{ return static_cast<char_type>(__c); }
|
|
|
|
// To keep both the byte 0xff and the eof symbol 0xffffffff
|
|
// from ending up as 0xffffffff.
|
|
static int_type
|
|
to_int_type(const char_type& __c)
|
|
{ return static_cast<int_type>(static_cast<unsigned char>(__c)); }
|
|
|
|
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>(EOF); }
|
|
|
|
static int_type
|
|
not_eof(const int_type& __c)
|
|
{ return (__c == eof()) ? 0 : __c; }
|
|
};
|
|
|
|
|
|
#ifdef _GLIBCPP_USE_WCHAR_T
|
|
template<>
|
|
struct char_traits<wchar_t>
|
|
{
|
|
typedef wchar_t char_type;
|
|
typedef wint_t int_type;
|
|
typedef streamoff off_type;
|
|
typedef wstreampos pos_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)
|
|
{ return wmemcmp(__s1, __s2, __n); }
|
|
|
|
static size_t
|
|
length(const char_type* __s)
|
|
{ return wcslen(__s); }
|
|
|
|
static const char_type*
|
|
find(const char_type* __s, size_t __n, const char_type& __a)
|
|
{ return wmemchr(__s, __a, __n); }
|
|
|
|
static char_type*
|
|
move(char_type* __s1, const char_type* __s2, int_type __n)
|
|
{ return wmemmove(__s1, __s2, __n); }
|
|
|
|
static char_type*
|
|
copy(char_type* __s1, const char_type* __s2, size_t __n)
|
|
{ return wmemcpy(__s1, __s2, __n); }
|
|
|
|
static char_type*
|
|
assign(char_type* __s, size_t __n, char_type __a)
|
|
{ return wmemset(__s, __a, __n); }
|
|
|
|
static char_type
|
|
to_char_type(const int_type& __c) { return char_type(__c); }
|
|
|
|
static int_type
|
|
to_int_type(const char_type& __c) { return int_type(__c); }
|
|
|
|
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>(WEOF); }
|
|
|
|
static int_type
|
|
not_eof(const int_type& __c)
|
|
{ return eq_int_type(__c, eof()) ? 0 : __c; }
|
|
};
|
|
#endif //_GLIBCPP_USE_WCHAR_T
|
|
|
|
template<typename _CharT, typename _Traits>
|
|
struct _Char_traits_match
|
|
{
|
|
_CharT _M_c;
|
|
_Char_traits_match(_CharT const& __c) : _M_c(__c) { }
|
|
|
|
bool
|
|
operator()(_CharT const& __a) { return _Traits::eq(_M_c, __a); }
|
|
};
|
|
} // namespace std
|
|
|
|
#endif
|