mirror of
git://gcc.gnu.org/git/gcc.git
synced 2024-12-22 13:20:04 +08:00
73a530bdcc
2003-07-15 Petur Runolfsson <peturr02@ru.is> * include/bits/char_traits.h (char_traits<wchar_t>::move): Change last parameter from int_type to size_t. From-SVN: r69415
261 lines
7.6 KiB
C++
261 lines
7.6 KiB
C++
// Character Traits for use by standard string and iostream -*- C++ -*-
|
|
|
|
// Copyright (C) 1997, 1998, 1999, 2000, 2001, 2002
|
|
// 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
|
|
//
|
|
|
|
/** @file char_traits.h
|
|
* This is an internal header file, included by other library headers.
|
|
* You should not attempt to use it directly.
|
|
*/
|
|
|
|
#ifndef _CHAR_TRAITS_H
|
|
#define _CHAR_TRAITS_H 1
|
|
|
|
#pragma GCC system_header
|
|
|
|
#include <cstring> // For memmove, memset, memchr
|
|
#include <bits/fpos.h> // For streampos
|
|
|
|
namespace std
|
|
{
|
|
// 21.1
|
|
/**
|
|
* @brief Basis for explicit traits specializations.
|
|
*
|
|
* @note For any given actual character type, this definition is
|
|
* probably wrong.
|
|
*
|
|
* See http://gcc.gnu.org/onlinedocs/libstdc++/21_strings/howto.html#5
|
|
* for advice on how to make use of this class for "unusual" character
|
|
* types. Also, check out include/ext/pod_char_traits.h.
|
|
*/
|
|
template<class _CharT>
|
|
struct char_traits
|
|
{
|
|
typedef _CharT char_type;
|
|
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);
|
|
|
|
static bool
|
|
eq(const char_type& __c1, const char_type& __c2);
|
|
|
|
static bool
|
|
lt(const char_type& __c1, const char_type& __c2);
|
|
|
|
static int
|
|
compare(const char_type* __s1, const char_type* __s2, size_t __n);
|
|
|
|
static size_t
|
|
length(const char_type* __s);
|
|
|
|
static const char_type*
|
|
find(const char_type* __s, size_t __n, const char_type& __a);
|
|
|
|
static char_type*
|
|
move(char_type* __s1, const char_type* __s2, size_t __n);
|
|
|
|
static char_type*
|
|
copy(char_type* __s1, const char_type* __s2, size_t __n);
|
|
|
|
static char_type*
|
|
assign(char_type* __s, size_t __n, char_type __a);
|
|
|
|
static char_type
|
|
to_char_type(const int_type& __c);
|
|
|
|
static int_type
|
|
to_int_type(const char_type& __c);
|
|
|
|
static bool
|
|
eq_int_type(const int_type& __c1, const int_type& __c2);
|
|
|
|
static int_type
|
|
eof();
|
|
|
|
static int_type
|
|
not_eof(const int_type& __c);
|
|
};
|
|
|
|
|
|
/// 21.1.3.1 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 _GLIBCXX_USE_WCHAR_T
|
|
/// 21.1.3.2 char_traits specializations
|
|
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, size_t __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 //_GLIBCXX_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
|