2000-10-05 13:27:02 +02:00
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// Character Traits for use by standard string and iostream -*- C++ -*-
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2002-07-31 04:47:36 +02:00
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// Copyright (C) 1997, 1998, 1999, 2000, 2001, 2002
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// Free Software Foundation, Inc.
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2000-10-05 13:27:02 +02:00
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//
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// This file is part of the GNU ISO C++ Library. This library is free
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// software; you can redistribute it and/or modify it under the
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// terms of the GNU General Public License as published by the
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// Free Software Foundation; either version 2, or (at your option)
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// any later version.
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// This library is distributed in the hope that it will be useful,
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// but WITHOUT ANY WARRANTY; without even the implied warranty of
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// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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// GNU General Public License for more details.
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// You should have received a copy of the GNU General Public License along
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// with this library; see the file COPYING. If not, write to the Free
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// Software Foundation, 59 Temple Place - Suite 330, Boston, MA 02111-1307,
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// USA.
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// As a special exception, you may use this file as part of a free software
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// library without restriction. Specifically, if other files instantiate
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// templates or use macros or inline functions from this file, or you compile
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// this file and link it with other files to produce an executable, this
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// file does not by itself cause the resulting executable to be covered by
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// the GNU General Public License. This exception does not however
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// invalidate any other reasons why the executable file might be covered by
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// the GNU General Public License.
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//
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// ISO C++ 14882: 21 Strings library
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//
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c_io_stdio.h: Correct grammar in comments.
2001-11-02 Phil Edwards <pme@gcc.gnu.org>
* config/io/c_io_stdio.h: Correct grammar in comments.
* docs/doxygen/Intro.3: Expand "top-level" man page.
* docs/doxygen/doxygroups.cc: New module definitions (comments).
* docs/doxygen/mainpage.doxy: Tweaks.
* docs/doxygen/run_doxygen: Update Doxygen version, massage man pages.
Add @file hooks so that headers are considered to be documented.
* include/bits/basic_ios.h, include/bits/basic_file.h,
include/bits/basic_string.h, include/bits/boost_concept_check.h,
include/bits/char_traits.h, include/bits/codecvt.h,
include/bits/concept_check.h, include/bits/cpp_type_traits.h,
include/bits/fpos.h, include/bits/gslice.h, include/bits/gslice_array.h,
include/bits/indirect_array.h, include/bits/ios_base.h,
include/bits/locale_facets.h, include/bits/localefwd.h,
include/bits/mask_array.h, include/bits/pthread_allocimpl.h,
include/bits/slice.h, include/bits/slice_array.h,
include/bits/std_algorithm.h, include/bits/std_bitset.h,
include/bits/std_complex.h, include/bits/std_deque.h,
include/bits/std_fstream.h, include/bits/std_functional.h,
include/bits/std_iomanip.h, include/bits/std_ios.h,
include/bits/std_iosfwd.h, include/bits/std_iostream.h,
include/bits/std_istream.h, include/bits/std_iterator.h,
include/bits/std_limits.h, include/bits/std_list.h,
include/bits/std_locale.h, include/bits/std_map.h,
include/bits/std_memory.h, include/bits/std_numeric.h,
include/bits/std_ostream.h, include/bits/std_queue.h,
include/bits/std_set.h, include/bits/std_sstream.h,
include/bits/std_stack.h, include/bits/std_streambuf.h,
include/bits/std_string.h, include/bits/std_utility.h,
include/bits/std_valarray.h, include/bits/std_vector.h,
include/bits/stl_algo.h, include/bits/stl_alloc.h,
include/bits/stl_bvector.h, include/bits/stl_construct.h,
include/bits/stl_deque.h, include/bits/stl_heap.h,
include/bits/stl_iterator.h, include/bits/stl_iterator_base_funcs.h,
include/bits/stl_iterator_base_types.h, include/bits/stl_list.h,
include/bits/stl_map.h, include/bits/stl_multimap.h,
include/bits/stl_multiset.h, include/bits/stl_numeric.h,
include/bits/stl_pair.h, include/bits/stl_pthread_alloc.h,
include/bits/stl_queue.h, include/bits/stl_raw_storage_iter.h,
include/bits/stl_relops.h, include/bits/stl_set.h,
include/bits/stl_stack.h, include/bits/stl_tempbuf.h,
include/bits/stl_threads.h, include/bits/stl_tree.h,
include/bits/stl_uninitialized.h, include/bits/stl_vector.h,
include/bits/stream_iterator.h, include/bits/streambuf_iterator.h,
include/bits/stringfwd.h, include/bits/type_traits.h,
include/bits/valarray_array.h, include/bits/valarray_meta.h:
Add hooks, tweak comments only.
* include/bits/stl_algobase.h (swap, min, iter_swap): Also
document these functions.
* include/bits/stl_function.h: Tweak link comments.
From-SVN: r46717
2001-11-02 18:38:11 +01:00
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/** @file char_traits.h
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* This is an internal header file, included by other library headers.
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* You should not attempt to use it directly.
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*/
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2003-07-05 06:05:45 +02:00
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#ifndef _CHAR_TRAITS_H
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#define _CHAR_TRAITS_H 1
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2000-10-05 13:27:02 +02:00
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2001-02-19 19:52:25 +01:00
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#pragma GCC system_header
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2002-09-01 02:33:53 +02:00
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#include <cstring> // For memmove, memset, memchr
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2003-07-25 07:32:23 +02:00
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#include <bits/stl_algobase.h>// For copy, lexicographical_compare, fill_n
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2002-09-01 02:33:53 +02:00
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#include <bits/fpos.h> // For streampos
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2000-10-05 13:27:02 +02:00
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2003-07-25 07:32:23 +02:00
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namespace __gnu_cxx
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2001-03-07 23:22:41 +01:00
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{
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2003-07-25 07:32:23 +02:00
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abi.txt: New file.
2002-07-20 Phil Edwards <pme@gcc.gnu.org>
* docs/html/abi.txt: New file.
* docs/html/23_containers/howto.html: Tweak vector-overhead text.
* docs/html/ext/lwg-active.html, docs/html/ext/lwg-defects.html:
Import from upstream, R22.
* include/bits/char_traits.h, include/bits/stl_iterator.h,
include/bits/stl_iterator_base_types.h, libsupc++/exception,
libsupc++/new, libsupc++/typeinfo: Use @brief markup.
* include/bits/deque.tcc, include/bits/stl_alloc.h,
include/bits/stl_deque.h, include/bits/stl_list.h: Postpone removal
of deprecated functions until 3.4. (Same timeframe, different text.)
* include/bits/stl_vector.h: Ditto. Also do the same cleanups that
the other sequence classes received.
From-SVN: r55602
2002-07-20 08:26:27 +02:00
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/**
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2003-07-25 07:32:23 +02:00
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* @brief Mapping from character type to associated types.
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*
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abi.txt: New file.
2002-07-20 Phil Edwards <pme@gcc.gnu.org>
* docs/html/abi.txt: New file.
* docs/html/23_containers/howto.html: Tweak vector-overhead text.
* docs/html/ext/lwg-active.html, docs/html/ext/lwg-defects.html:
Import from upstream, R22.
* include/bits/char_traits.h, include/bits/stl_iterator.h,
include/bits/stl_iterator_base_types.h, libsupc++/exception,
libsupc++/new, libsupc++/typeinfo: Use @brief markup.
* include/bits/deque.tcc, include/bits/stl_alloc.h,
include/bits/stl_deque.h, include/bits/stl_list.h: Postpone removal
of deprecated functions until 3.4. (Same timeframe, different text.)
* include/bits/stl_vector.h: Ditto. Also do the same cleanups that
the other sequence classes received.
From-SVN: r55602
2002-07-20 08:26:27 +02:00
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*
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2003-07-25 07:32:23 +02:00
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* @note This is an implementation class for the generic version
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* of char_traits. It defines int_type, off_type, pos_type, and
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* state_type. By default these are unsigned long, streamoff,
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* streampos, and mbstate_t. Users who need a different set of
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* types, but who don't need to change the definitions of any function
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* defined in char_traits, can specialize __gnu_cxx::_Char_types
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* while leaving __gnu_cxx::char_traits alone. */
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template <class _CharT>
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struct _Char_types
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{
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typedef unsigned long int_type;
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typedef std::streampos pos_type;
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typedef std::streamoff off_type;
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typedef std::mbstate_t state_type;
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};
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/**
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* @brief Base class used to implement std::char_traits.
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*
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* @note For any given actual character type, this definition is
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* probably wrong. (Most of the member functions are likely to be
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* right, but the int_type and state_type typedefs, and the eof()
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* member function, are likely to be wrong.) The reason this class
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* exists is so users can specialize it. Classes in namespace std
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* may not be specialized for fundamentl types, but classes in
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* namespace __gnu_cxx may be.
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2002-09-01 02:33:53 +02:00
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*
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* See http://gcc.gnu.org/onlinedocs/libstdc++/21_strings/howto.html#5
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* for advice on how to make use of this class for "unusual" character
|
2003-07-25 07:32:23 +02:00
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* types. Also, check out include/ext/pod_char_traits.h. */
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template<typename _CharT>
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2000-10-05 13:27:02 +02:00
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struct char_traits
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{
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2003-07-25 07:32:23 +02:00
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typedef _CharT char_type;
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typedef typename _Char_types<_CharT>::int_type int_type;
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typedef typename _Char_types<_CharT>::pos_type pos_type;
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typedef typename _Char_types<_CharT>::off_type off_type;
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typedef typename _Char_types<_CharT>::state_type state_type;
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2000-10-05 13:27:02 +02:00
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static void
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2003-07-25 07:32:23 +02:00
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assign(char_type& __c1, const char_type& __c2)
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{ __c1 = __c2; }
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2000-10-05 13:27:02 +02:00
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static bool
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2003-07-25 07:32:23 +02:00
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eq(const char_type& __c1, const char_type& __c2)
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{ return __c1 == __c2; }
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2000-10-05 13:27:02 +02:00
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static bool
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2003-07-25 07:32:23 +02:00
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lt(const char_type& __c1, const char_type& __c2)
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{ return __c1 < __c2; }
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2000-10-05 13:27:02 +02:00
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static int
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2003-07-25 07:32:23 +02:00
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compare(const char_type* __s1, const char_type* __s2, std::size_t __n);
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2000-10-05 13:27:02 +02:00
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2003-07-25 07:32:23 +02:00
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static std::size_t
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2002-07-31 04:47:36 +02:00
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length(const char_type* __s);
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2000-10-05 13:27:02 +02:00
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static const char_type*
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2003-07-25 07:32:23 +02:00
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find(const char_type* __s, std::size_t __n, const char_type& __a);
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2000-10-05 13:27:02 +02:00
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static char_type*
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2003-07-25 07:32:23 +02:00
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move(char_type* __s1, const char_type* __s2, std::size_t __n);
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2000-10-05 13:27:02 +02:00
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static char_type*
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2003-07-25 07:32:23 +02:00
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copy(char_type* __s1, const char_type* __s2, std::size_t __n);
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2000-10-05 13:27:02 +02:00
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static char_type*
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2003-07-25 07:32:23 +02:00
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assign(char_type* __s, std::size_t __n, char_type __a);
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2000-10-05 13:27:02 +02:00
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static char_type
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2003-07-25 07:32:23 +02:00
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to_char_type(const int_type& __c)
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{ return static_cast<char_type>(__c); }
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2000-10-05 13:27:02 +02:00
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static int_type
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2003-07-25 07:32:23 +02:00
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to_int_type(const char_type& __c)
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{ return static_cast<int_type>(__c); }
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2000-10-05 13:27:02 +02:00
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static bool
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2003-07-25 07:32:23 +02:00
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eq_int_type(const int_type& __c1, const int_type& __c2)
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{ return __c1 == __c2; }
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2000-10-05 13:27:02 +02:00
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static int_type
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2003-07-25 07:32:23 +02:00
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eof()
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{ return static_cast<int_type>(EOF); }
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2000-10-05 13:27:02 +02:00
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static int_type
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2003-07-25 07:32:23 +02:00
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not_eof(const int_type& __c)
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{ return !eq_int_type(__c, eof()) ? __c : char_type(); }
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2000-10-05 13:27:02 +02:00
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};
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2003-07-25 07:32:23 +02:00
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template<typename _CharT>
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int
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char_traits<_CharT>::
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compare(const char_type* __s1, const char_type* __s2, std::size_t __n)
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{
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for (size_t __i = 0; __i < __n; ++__i)
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if (lt(__s1[__i], __s2[__i]))
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return -1;
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else if (lt(__s2[__i], __s1[__i]))
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return 1;
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return 0;
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}
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template<typename _CharT>
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std::size_t
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char_traits<_CharT>::
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length(const char_type* __p)
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{
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std::size_t __i = 0;
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while (!eq(__p[__i], char_type()))
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++__i;
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return __i;
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}
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template<typename _CharT>
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const typename char_traits<_CharT>::char_type*
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char_traits<_CharT>::
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find(const char_type* __s, std::size_t __n, const char_type& __a)
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{
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for (std::size_t __i = 0; __i < __n; ++__i)
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if (eq(__s[__i], __a))
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return __s + __i;
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return 0;
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}
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template<typename _CharT>
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typename char_traits<_CharT>::char_type*
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char_traits<_CharT>::
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move(char_type* __s1, const char_type* __s2, std::size_t __n)
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{
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return static_cast<_CharT*>(std::memmove(__s1, __s2,
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__n * sizeof(char_type)));
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}
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template<typename _CharT>
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typename char_traits<_CharT>::char_type*
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char_traits<_CharT>::
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copy(char_type* __s1, const char_type* __s2, std::size_t __n)
|
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|
{
|
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|
std::copy(__s2, __s2 + __n, __s1);
|
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|
return __s1;
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|
|
}
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|
template<typename _CharT>
|
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|
typename char_traits<_CharT>::char_type*
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char_traits<_CharT>::
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assign(char_type* __s, std::size_t __n, char_type __a)
|
|
|
|
{
|
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|
std::fill_n(__s, __n, __a);
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return __s;
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|
}
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}
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|
namespace std
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|
|
|
{
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|
|
// 21.1
|
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|
|
/**
|
|
|
|
* @brief Basis for explicit traits specializations.
|
|
|
|
*
|
|
|
|
* @note For any given actual character type, this definition is
|
|
|
|
* probably wrong. Since this is just a thin wrapper around
|
|
|
|
* __gnu_cxx::char_traits, it is possible to achieve a more
|
|
|
|
* appropriate definition by specializing __gnu_cxx::char_traits.
|
|
|
|
*
|
|
|
|
* 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
|
|
|
|
: public __gnu_cxx::char_traits<_CharT>
|
|
|
|
{ };
|
|
|
|
|
2001-01-12 22:24:15 +01:00
|
|
|
|
2002-09-01 02:33:53 +02:00
|
|
|
/// 21.1.3.1 char_traits specializations
|
2000-10-05 13:27:02 +02:00
|
|
|
template<>
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|
|
struct char_traits<char>
|
|
|
|
{
|
2003-07-25 07:32:23 +02:00
|
|
|
typedef char char_type;
|
|
|
|
typedef int int_type;
|
|
|
|
typedef streampos pos_type;
|
|
|
|
typedef streamoff off_type;
|
|
|
|
typedef mbstate_t state_type;
|
2000-10-05 13:27:02 +02:00
|
|
|
|
|
|
|
static void
|
|
|
|
assign(char_type& __c1, const char_type& __c2)
|
|
|
|
{ __c1 = __c2; }
|
|
|
|
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|
static bool
|
|
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|
eq(const char_type& __c1, const char_type& __c2)
|
|
|
|
{ return __c1 == __c2; }
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|
|
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|
|
|
|
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*
|
|
|
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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)
|
2003-07-08 22:25:39 +02:00
|
|
|
{ return static_cast<char_type*>(memcpy(__s1, __s2, __n)); }
|
2000-10-05 13:27:02 +02:00
|
|
|
|
|
|
|
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; }
|
|
|
|
};
|
|
|
|
|
|
|
|
|
2003-07-05 06:05:45 +02:00
|
|
|
#ifdef _GLIBCXX_USE_WCHAR_T
|
2002-09-01 02:33:53 +02:00
|
|
|
/// 21.1.3.2 char_traits specializations
|
2000-10-05 13:27:02 +02:00
|
|
|
template<>
|
|
|
|
struct char_traits<wchar_t>
|
|
|
|
{
|
2003-07-25 07:32:23 +02:00
|
|
|
typedef wchar_t char_type;
|
|
|
|
typedef wint_t int_type;
|
|
|
|
typedef streamoff off_type;
|
|
|
|
typedef wstreampos pos_type;
|
|
|
|
typedef mbstate_t state_type;
|
2000-10-05 13:27:02 +02:00
|
|
|
|
|
|
|
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*
|
2003-07-15 19:30:10 +02:00
|
|
|
move(char_type* __s1, const char_type* __s2, size_t __n)
|
2000-10-05 13:27:02 +02:00
|
|
|
{ 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; }
|
|
|
|
};
|
2003-07-05 06:05:45 +02:00
|
|
|
#endif //_GLIBCXX_USE_WCHAR_T
|
2000-10-05 13:27:02 +02:00
|
|
|
|
|
|
|
template<typename _CharT, typename _Traits>
|
|
|
|
struct _Char_traits_match
|
|
|
|
{
|
|
|
|
_CharT _M_c;
|
|
|
|
_Char_traits_match(_CharT const& __c) : _M_c(__c) { }
|
|
|
|
|
|
|
|
bool
|
2001-01-12 22:24:15 +01:00
|
|
|
operator()(_CharT const& __a) { return _Traits::eq(_M_c, __a); }
|
2000-10-05 13:27:02 +02:00
|
|
|
};
|
|
|
|
} // namespace std
|
|
|
|
|
2001-03-07 23:22:41 +01:00
|
|
|
#endif
|