author | hgs |
Tue, 14 Sep 2010 15:26:30 +0530 | |
changeset 66 | 38bdaa106551 |
parent 0 | e4d67989cc36 |
permissions | -rw-r--r-- |
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/* |
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* Copyright (c) 1996,1997 |
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* Silicon Graphics Computer Systems, Inc. |
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* |
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* Copyright (c) 1999 |
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* Boris Fomitchev |
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* |
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* This material is provided "as is", with absolutely no warranty expressed |
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* or implied. Any use is at your own risk. |
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* |
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* Permission to use or copy this software for any purpose is hereby granted |
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* without fee, provided the above notices are retained on all copies. |
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* Permission to modify the code and to distribute modified code is granted, |
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* provided the above notices are retained, and a notice that the code was |
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* modified is included with the above copyright notice. |
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* |
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*/ |
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|
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#ifndef _STLP_CHAR_TRAITS_H |
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#define _STLP_CHAR_TRAITS_H |
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// Define char_traits |
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# if defined (_STLP_OWN_IOSTREAMS) || ! defined (_STLP_USE_NEW_IOSTREAMS) |
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# if ! defined (_STLP_CSTDDEF) |
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# include <cstddef> |
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# endif |
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#if ! defined (_STLP_CSTRING) |
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# include <cstring> |
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#endif |
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#if defined (_STLP_UNIX) && defined (_STLP_HAS_NO_NEW_C_HEADERS) |
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#include <sys/types.h> // For off_t |
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#endif /* __unix */ |
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#ifdef __BORLANDC__ |
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# include <mem.h> |
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# include <string.h> |
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# include <_stddef.h> |
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// class mbstate_t; |
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#endif |
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#ifndef __TYPE_TRAITS_H |
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# include <stl/type_traits.h> |
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#endif |
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# if !defined (_STLP_CWCHAR) |
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# include <stl/_cwchar.h> |
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# endif |
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_STLP_BEGIN_NAMESPACE |
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# ifdef _STLP_OWN_IOSTREAMS |
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template <class _Tp> class allocator; |
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#define _STLP_NULL_CHAR_INIT(_ChT) _STLP_DEFAULT_CONSTRUCTED(_ChT) |
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#if defined (__sgi) && defined (_STLP_HAS_NO_NEW_C_HEADERS) /* IRIX */ |
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typedef off64_t streamoff; |
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// #elif defined (__unix) && defined (_STLP_HAS_NO_NEW_C_HEADERS) /* Other version of UNIX */ |
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// typedef off_t streamoff; |
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#else /* __unix */ |
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// boris : here, it's not ptrdiff_t as some Solaris systems have confusing definitions of these. |
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typedef long streamoff; |
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#endif /* _STLP_HAS_NO_NEW_C_HEADERS */ |
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typedef ptrdiff_t streamsize; |
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// Class fpos, which represents a position within a file. (The C++ |
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// standard calls for it to be defined in <ios>. This implementation |
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// moves it to <iosfwd>, which is included by <ios>.) |
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template <class _StateT> class fpos |
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{ |
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public: // From table 88 of the C++ standard. |
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fpos(streamoff __pos) : _M_pos(__pos), _M_st(_STLP_NULL_CHAR_INIT(_StateT)) {} |
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fpos() : _M_pos(0), _M_st(_STLP_NULL_CHAR_INIT(_StateT)) {} |
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operator streamoff() const { return _M_pos; } |
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bool _STLP_CALL operator==(const fpos<_StateT>& __y) const |
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{ return _M_pos == __y._M_pos; } |
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bool _STLP_CALL operator!=(const fpos<_StateT>& __y) const |
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{ return _M_pos != __y._M_pos; } |
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fpos<_StateT>& operator+=(streamoff __off) { |
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_M_pos += __off; |
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return *this; |
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} |
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fpos<_StateT>& operator-=(streamoff __off) { |
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_M_pos -= __off; |
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return *this; |
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} |
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fpos<_StateT> operator+(streamoff __off) { |
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fpos<_StateT> __tmp(*this); |
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__tmp += __off; |
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return __tmp; |
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} |
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fpos<_StateT> operator-(streamoff __off) { |
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fpos<_StateT> __tmp(*this); |
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__tmp -= __off; |
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return __tmp; |
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} |
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107 |
|
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public: // Manipulation of the state member. |
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_StateT state() const { return _M_st; } |
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void state(_StateT __st) { _M_st = __st; } |
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private: |
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streamoff _M_pos; |
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_StateT _M_st; |
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}; |
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|
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typedef fpos<mbstate_t> streampos; |
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typedef fpos<mbstate_t> wstreampos; |
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# endif |
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|
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// Class __char_traits_base. |
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121 |
|
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template <class _CharT, class _IntT> class __char_traits_base { |
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public: |
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typedef _CharT char_type; |
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typedef _IntT int_type; |
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#ifdef _STLP_USE_NEW_IOSTREAMS |
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typedef streamoff off_type; |
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typedef streampos pos_type; |
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# ifdef _STLP_NO_MBSTATE_T |
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typedef char state_type; |
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# else |
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typedef mbstate_t state_type; |
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# endif |
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#endif /* _STLP_USE_NEW_IOSTREAMS */ |
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135 |
|
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static void _STLP_CALL assign(char_type& __c1, const char_type& __c2) { __c1 = __c2; } |
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static bool _STLP_CALL eq(const _CharT& __c1, const _CharT& __c2) |
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{ return __c1 == __c2; } |
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static bool _STLP_CALL lt(const _CharT& __c1, const _CharT& __c2) |
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{ return __c1 < __c2; } |
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141 |
|
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static int _STLP_CALL compare(const _CharT* __s1, const _CharT* __s2, size_t __n) { |
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for (size_t __i = 0; __i < __n; ++__i) |
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if (!eq(__s1[__i], __s2[__i])) |
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return __s1[__i] < __s2[__i] ? -1 : 1; |
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return 0; |
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} |
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148 |
|
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static size_t _STLP_CALL length(const _CharT* __s) { |
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const _CharT _NullChar = _STLP_DEFAULT_CONSTRUCTED(_CharT); |
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size_t __i; |
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for (__i = 0; !eq(__s[__i], _NullChar); ++__i) |
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{} |
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return __i; |
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} |
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|
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static const _CharT* _STLP_CALL find(const _CharT* __s, size_t __n, const _CharT& __c) { |
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for ( ; __n > 0 ; ++__s, --__n) |
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if (eq(*__s, __c)) |
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return __s; |
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return 0; |
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} |
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163 |
|
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|
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static _CharT* _STLP_CALL move(_CharT* __s1, const _CharT* __s2, size_t _Sz) { |
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return (_Sz == 0 ? __s1 : (_CharT*)memmove(__s1, __s2, _Sz * sizeof(_CharT))); |
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} |
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168 |
|
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static _CharT* _STLP_CALL copy(_CharT* __s1, const _CharT* __s2, size_t __n) { |
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return (__n == 0 ? __s1 : |
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(_CharT*)memcpy(__s1, __s2, __n * sizeof(_CharT))); |
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} |
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|
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static _CharT* _STLP_CALL assign(_CharT* __s, size_t __n, _CharT __c) { |
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for (size_t __i = 0; __i < __n; ++__i) |
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__s[__i] = __c; |
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return __s; |
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} |
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|
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static int_type _STLP_CALL not_eof(const int_type& __c) { |
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return !eq_int_type(__c, eof()) ? __c : __STATIC_CAST(int_type, 0); |
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} |
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183 |
|
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static char_type _STLP_CALL to_char_type(const int_type& __c) { |
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return (char_type)__c; |
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} |
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|
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static int_type _STLP_CALL to_int_type(const char_type& __c) { |
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return (int_type)__c; |
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} |
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|
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static bool _STLP_CALL eq_int_type(const int_type& __c1, const int_type& __c2) { |
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return __c1 == __c2; |
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} |
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|
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static int_type _STLP_CALL eof() { |
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return (int_type)-1; |
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// return __STATIC_CAST(int_type,-1); |
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} |
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}; |
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|
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// Generic char_traits class. Note that this class is provided only |
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// as a base for explicit specialization; it is unlikely to be useful |
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// as is for any particular user-defined type. In particular, it |
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// *will not work* for a non-POD type. |
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template <class _CharT> class char_traits |
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: public __char_traits_base<_CharT, _CharT> |
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{}; |
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// Specialization for char. |
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_STLP_TEMPLATE_NULL class _STLP_CLASS_DECLSPEC char_traits<char> |
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: public __char_traits_base<char, int> |
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{ |
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public: |
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typedef char char_type; |
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typedef int int_type; |
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#ifdef _STLP_USE_NEW_IOSTREAMS |
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typedef streamoff off_type; |
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# ifndef _STLP_NO_MBSTATE_T |
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typedef streampos pos_type; |
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typedef mbstate_t state_type; |
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# endif |
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#endif /* _STLP_USE_NEW_IOSTREAMS */ |
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static char _STLP_CALL to_char_type(const int& __c) { |
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return (char)(unsigned char)__c; |
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} |
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static int _STLP_CALL to_int_type(const char& __c) { |
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return (unsigned char)__c; |
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} |
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static int _STLP_CALL compare(const char* __s1, const char* __s2, size_t __n) |
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{ return memcmp(__s1, __s2, __n); } |
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static size_t _STLP_CALL length(const char* __s) { return strlen(__s); } |
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static void _STLP_CALL assign(char& __c1, const char& __c2) { __c1 = __c2; } |
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static char* _STLP_CALL assign(char* __s, size_t __n, char __c) |
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{ memset(__s, __c, __n); return __s; } |
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}; |
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# if defined (_STLP_HAS_WCHAR_T) |
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// Specialization for wchar_t. |
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_STLP_TEMPLATE_NULL class _STLP_CLASS_DECLSPEC char_traits<wchar_t> |
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: public __char_traits_base<wchar_t, wint_t> |
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{}; |
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# endif |
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_STLP_END_NAMESPACE |
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# else /* OWN_IOSTREAMS */ |
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# include <wrap_std/iosfwd> |
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# endif /* OWN_IOSTREAMS */ |
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#endif /* _STLP_CHAR_TRAITS_H */ |
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// Local Variables: |
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// mode:C++ |
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// End: |
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