1.1 --- /dev/null Thu Jan 01 00:00:00 1970 +0000
1.2 +++ b/epoc32/include/stdapis/stlport/stl/_istreambuf_iterator.h Wed Mar 31 12:33:34 2010 +0100
1.3 @@ -0,0 +1,169 @@
1.4 +/*
1.5 + * Copyright (c) 1999
1.6 + * Silicon Graphics Computer Systems, Inc.
1.7 + *
1.8 + * Copyright (c) 1999
1.9 + * Boris Fomitchev
1.10 + *
1.11 + * This material is provided "as is", with absolutely no warranty expressed
1.12 + * or implied. Any use is at your own risk.
1.13 + *
1.14 + * Permission to use or copy this software for any purpose is hereby granted
1.15 + * without fee, provided the above notices are retained on all copies.
1.16 + * Permission to modify the code and to distribute modified code is granted,
1.17 + * provided the above notices are retained, and a notice that the code was
1.18 + * modified is included with the above copyright notice.
1.19 + *
1.20 + */
1.21 +// WARNING: This is an internal header file, included by other C++
1.22 +// standard library headers. You should not attempt to use this header
1.23 +// file directly.
1.24 +
1.25 +
1.26 +#ifndef _STLP_INTERNAL_ISTREAMBUF_ITERATOR_H
1.27 +#define _STLP_INTERNAL_ISTREAMBUF_ITERATOR_H
1.28 +
1.29 +#ifndef _STLP_INTERNAL_ITERATOR_BASE_H
1.30 +# include <stl/_iterator_base.h>
1.31 +#endif
1.32 +
1.33 +#ifndef _STLP_INTERNAL_STREAMBUF
1.34 +# include <stl/_streambuf.h>
1.35 +#endif
1.36 +
1.37 +_STLP_BEGIN_NAMESPACE
1.38 +
1.39 +// defined in _istream.h
1.40 +template <class _CharT, class _Traits>
1.41 +extern basic_streambuf<_CharT, _Traits>* _STLP_CALL _M_get_istreambuf(basic_istream<_CharT, _Traits>& ) ;
1.42 +
1.43 +// We do not read any characters until operator* is called. operator* calls sgetc
1.44 +// unless the iterator is unchanged from the last call in which case a cached value is
1.45 +// used. Calls to operator++ use sbumpc.
1.46 +
1.47 +template<class _CharT, class _Traits>
1.48 +class istreambuf_iterator
1.49 +{
1.50 +public:
1.51 + typedef _CharT char_type;
1.52 + typedef _Traits traits_type;
1.53 + typedef typename _Traits::int_type int_type;
1.54 + typedef basic_streambuf<_CharT, _Traits> streambuf_type;
1.55 + typedef basic_istream<_CharT, _Traits> istream_type;
1.56 +
1.57 + typedef input_iterator_tag iterator_category;
1.58 + typedef _CharT value_type;
1.59 + typedef typename _Traits::off_type difference_type;
1.60 + typedef const _CharT* pointer;
1.61 + typedef const _CharT& reference;
1.62 +
1.63 +public:
1.64 + istreambuf_iterator(streambuf_type* __p = 0) { this->_M_init(__p); }
1.65 + // istreambuf_iterator(basic_istream<_CharT, _Traits>& __is) { this->_M_init(_M_get_istreambuf(__is)); }
1.66 + inline istreambuf_iterator(basic_istream<_CharT, _Traits>& __is);
1.67 +
1.68 + char_type operator*() const { this->_M_getc(); return _M_c; }
1.69 + istreambuf_iterator<_CharT, _Traits>& operator++() { this->_M_bumpc(); return *this; }
1.70 + istreambuf_iterator<_CharT, _Traits> operator++(int);
1.71 +
1.72 + bool equal(const istreambuf_iterator<_CharT, _Traits>& __i) const {
1.73 + if (this->_M_buf)
1.74 + this->_M_getc();
1.75 + if (__i._M_buf)
1.76 + __i._M_getc();
1.77 + return this->_M_eof == __i._M_eof;
1.78 + }
1.79 +
1.80 +private:
1.81 + void _M_init(streambuf_type* __p) {
1.82 + _M_buf = __p;
1.83 + _M_eof = !__p;
1.84 + // _M_is_initialized = _M_eof;
1.85 + _M_have_c = false;
1.86 + }
1.87 +
1.88 + void _M_getc() const {
1.89 + if (_M_have_c)
1.90 + return;
1.91 + int_type __c = _M_buf->sgetc();
1.92 +# if !defined (_STLP_NEED_MUTABLE) /* && ! defined (__SUNPRO_CC) */
1.93 + _M_c = traits_type::to_char_type(__c);
1.94 + _M_eof = traits_type::eq_int_type(__c, traits_type::eof());
1.95 + _M_have_c = true;
1.96 +# else
1.97 + typedef istreambuf_iterator<_CharT,_Traits> _Self;
1.98 + _Self* __that = __CONST_CAST(_Self*, this);
1.99 + __that->_M_c = __STATIC_CAST(_CharT, traits_type::to_char_type(__c));
1.100 + __that->_M_eof = traits_type::eq_int_type(__c, traits_type::eof());
1.101 + __that->_M_have_c = true;
1.102 +# endif
1.103 + }
1.104 +
1.105 + int_type _M_bumpc() {
1.106 + int_type ch = _M_buf->sbumpc();
1.107 + _M_have_c = false;
1.108 + return ch;
1.109 + }
1.110 +
1.111 +private:
1.112 + streambuf_type* _M_buf;
1.113 + mutable _CharT _M_c;
1.114 + mutable unsigned char _M_eof;
1.115 + mutable unsigned char _M_have_c;
1.116 +};
1.117 +
1.118 +template<class _CharT, class _Traits>
1.119 +inline istreambuf_iterator<_CharT, _Traits>::istreambuf_iterator(basic_istream<_CharT, _Traits>& __is)
1.120 +{ this->_M_init(_M_get_istreambuf(__is)); }
1.121 +
1.122 +template<class _CharT, class _Traits>
1.123 +inline bool _STLP_CALL operator==(const istreambuf_iterator<_CharT, _Traits>& __x,
1.124 + const istreambuf_iterator<_CharT, _Traits>& __y) {
1.125 + return __x.equal(__y);
1.126 +}
1.127 +
1.128 +#ifdef _STLP_USE_SEPARATE_RELOPS_NAMESPACE
1.129 +
1.130 +template<class _CharT, class _Traits>
1.131 +inline bool _STLP_CALL operator!=(const istreambuf_iterator<_CharT, _Traits>& __x,
1.132 + const istreambuf_iterator<_CharT, _Traits>& __y) {
1.133 + return !__x.equal(__y);
1.134 +}
1.135 +
1.136 +#endif /* _STLP_USE_SEPARATE_RELOPS_NAMESPACE */
1.137 +
1.138 +# if defined (_STLP_USE_TEMPLATE_EXPORT)
1.139 +_STLP_EXPORT_TEMPLATE_CLASS istreambuf_iterator<char, char_traits<char> >;
1.140 +# if defined (INSTANTIATE_WIDE_STREAMS)
1.141 +_STLP_EXPORT_TEMPLATE_CLASS istreambuf_iterator<wchar_t, char_traits<wchar_t> >;
1.142 +# endif
1.143 +# endif /* _STLP_USE_TEMPLATE_EXPORT */
1.144 +
1.145 +# ifdef _STLP_USE_OLD_HP_ITERATOR_QUERIES
1.146 +template <class _CharT, class _Traits>
1.147 +inline input_iterator_tag _STLP_CALL iterator_category(const istreambuf_iterator<_CharT, _Traits>&) { return input_iterator_tag(); }
1.148 +template <class _CharT, class _Traits>
1.149 +inline streamoff* _STLP_CALL
1.150 +distance_type(const istreambuf_iterator<_CharT, _Traits>&) { return (streamoff*)0; }
1.151 +template <class _CharT, class _Traits>
1.152 +inline _CharT* _STLP_CALL value_type(const istreambuf_iterator<_CharT, _Traits>&) { return (_CharT*)0; }
1.153 +# endif
1.154 +
1.155 +template <class _CharT, class _Traits>
1.156 +istreambuf_iterator<_CharT, _Traits>
1.157 +istreambuf_iterator<_CharT, _Traits>::operator++(int) {
1.158 + istreambuf_iterator<_CharT, _Traits> __tmp = *this;
1.159 + __tmp._M_c = this->_M_bumpc();
1.160 + __tmp._M_have_c = true;
1.161 + this->_M_have_c = false;
1.162 + return __tmp;
1.163 +}
1.164 +
1.165 +_STLP_END_NAMESPACE
1.166 +
1.167 +#endif /* _STLP_INTERNAL_ISTREAMBUF_ITERATOR_H */
1.168 +
1.169 +// Local Variables:
1.170 +// mode:C++
1.171 +// End:
1.172 +