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| 1 | 13 | up20180614 | // -*- C++ -*- |
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| 2 | //===------------------------- streambuf ----------------------------------===// |
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| 3 | // |
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| 4 | // The LLVM Compiler Infrastructure |
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| 5 | // |
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| 6 | // This file is dual licensed under the MIT and the University of Illinois Open |
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| 7 | // Source Licenses. See LICENSE.TXT for details. |
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| 8 | // |
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| 9 | //===----------------------------------------------------------------------===// |
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| 10 | |||
| 11 | #ifndef _LIBCPP_STEAMBUF |
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| 12 | #define _LIBCPP_STEAMBUF |
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| 13 | |||
| 14 | /* |
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| 15 | streambuf synopsis |
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| 16 | |||
| 17 | namespace std |
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| 18 | {
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| 19 | |||
| 20 | template <class charT, class traits = char_traits<charT> > |
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| 21 | class basic_streambuf |
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| 22 | {
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| 23 | public: |
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| 24 | // types: |
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| 25 | typedef charT char_type; |
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| 26 | typedef traits traits_type; |
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| 27 | typedef typename traits_type::int_type int_type; |
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| 28 | typedef typename traits_type::pos_type pos_type; |
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| 29 | typedef typename traits_type::off_type off_type; |
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| 30 | |||
| 31 | virtual ~basic_streambuf(); |
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| 32 | |||
| 33 | // 27.6.2.2.1 locales: |
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| 34 | locale pubimbue(const locale& loc); |
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| 35 | locale getloc() const; |
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| 36 | |||
| 37 | // 27.6.2.2.2 buffer and positioning: |
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| 38 | basic_streambuf* pubsetbuf(char_type* s, streamsize n); |
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| 39 | pos_type pubseekoff(off_type off, ios_base::seekdir way, |
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| 40 | ios_base::openmode which = ios_base::in | ios_base::out); |
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| 41 | pos_type pubseekpos(pos_type sp, |
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| 42 | ios_base::openmode which = ios_base::in | ios_base::out); |
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| 43 | int pubsync(); |
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| 44 | |||
| 45 | // Get and put areas: |
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| 46 | // 27.6.2.2.3 Get area: |
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| 47 | streamsize in_avail(); |
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| 48 | int_type snextc(); |
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| 49 | int_type sbumpc(); |
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| 50 | int_type sgetc(); |
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| 51 | streamsize sgetn(char_type* s, streamsize n); |
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| 52 | |||
| 53 | // 27.6.2.2.4 Putback: |
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| 54 | int_type sputbackc(char_type c); |
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| 55 | int_type sungetc(); |
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| 56 | |||
| 57 | // 27.6.2.2.5 Put area: |
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| 58 | int_type sputc(char_type c); |
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| 59 | streamsize sputn(const char_type* s, streamsize n); |
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| 60 | |||
| 61 | protected: |
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| 62 | basic_streambuf(); |
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| 63 | basic_streambuf(const basic_streambuf& rhs); |
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| 64 | basic_streambuf& operator=(const basic_streambuf& rhs); |
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| 65 | void swap(basic_streambuf& rhs); |
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| 66 | |||
| 67 | // 27.6.2.3.2 Get area: |
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| 68 | char_type* eback() const; |
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| 69 | char_type* gptr() const; |
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| 70 | char_type* egptr() const; |
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| 71 | void gbump(int n); |
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| 72 | void setg(char_type* gbeg, char_type* gnext, char_type* gend); |
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| 73 | |||
| 74 | // 27.6.2.3.3 Put area: |
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| 75 | char_type* pbase() const; |
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| 76 | char_type* pptr() const; |
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| 77 | char_type* epptr() const; |
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| 78 | void pbump(int n); |
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| 79 | void setp(char_type* pbeg, char_type* pend); |
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| 80 | |||
| 81 | // 27.6.2.4 virtual functions: |
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| 82 | // 27.6.2.4.1 Locales: |
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| 83 | virtual void imbue(const locale& loc); |
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| 84 | |||
| 85 | // 27.6.2.4.2 Buffer management and positioning: |
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| 86 | virtual basic_streambuf* setbuf(char_type* s, streamsize n); |
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| 87 | virtual pos_type seekoff(off_type off, ios_base::seekdir way, |
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| 88 | ios_base::openmode which = ios_base::in | ios_base::out); |
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| 89 | virtual pos_type seekpos(pos_type sp, |
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| 90 | ios_base::openmode which = ios_base::in | ios_base::out); |
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| 91 | virtual int sync(); |
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| 92 | |||
| 93 | // 27.6.2.4.3 Get area: |
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| 94 | virtual streamsize showmanyc(); |
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| 95 | virtual streamsize xsgetn(char_type* s, streamsize n); |
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| 96 | virtual int_type underflow(); |
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| 97 | virtual int_type uflow(); |
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| 98 | |||
| 99 | // 27.6.2.4.4 Putback: |
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| 100 | virtual int_type pbackfail(int_type c = traits_type::eof()); |
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| 101 | |||
| 102 | // 27.6.2.4.5 Put area: |
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| 103 | virtual streamsize xsputn(const char_type* s, streamsize n); |
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| 104 | virtual int_type overflow (int_type c = traits_type::eof()); |
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| 105 | }; |
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| 106 | |||
| 107 | } // std |
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| 108 | |||
| 109 | */ |
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| 110 | |||
| 111 | #include <__config> |
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| 112 | #include <iosfwd> |
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| 113 | #include <ios> |
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| 114 | |||
| 115 | #if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER) |
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| 116 | #pragma GCC system_header |
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| 117 | #endif |
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| 118 | |||
| 119 | _LIBCPP_BEGIN_NAMESPACE_STD |
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| 120 | |||
| 121 | template <class _CharT, class _Traits> |
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| 122 | class _LIBCPP_TYPE_VIS_ONLY basic_streambuf |
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| 123 | {
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| 124 | public: |
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| 125 | // types: |
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| 126 | typedef _CharT char_type; |
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| 127 | typedef _Traits traits_type; |
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| 128 | typedef typename traits_type::int_type int_type; |
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| 129 | typedef typename traits_type::pos_type pos_type; |
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| 130 | typedef typename traits_type::off_type off_type; |
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| 131 | |||
| 132 | virtual ~basic_streambuf(); |
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| 133 | |||
| 134 | // 27.6.2.2.1 locales: |
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| 135 | locale pubimbue(const locale& __loc); |
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| 136 | locale getloc() const; |
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| 137 | |||
| 138 | // 27.6.2.2.2 buffer and positioning: |
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| 139 | basic_streambuf* pubsetbuf(char_type* __s, streamsize __n); |
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| 140 | pos_type pubseekoff(off_type __off, ios_base::seekdir __way, |
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| 141 | ios_base::openmode __which = ios_base::in | ios_base::out); |
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| 142 | pos_type pubseekpos(pos_type __sp, |
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| 143 | ios_base::openmode __which = ios_base::in | ios_base::out); |
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| 144 | int pubsync(); |
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| 145 | |||
| 146 | // Get and put areas: |
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| 147 | // 27.6.2.2.3 Get area: |
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| 148 | streamsize in_avail(); |
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| 149 | int_type snextc(); |
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| 150 | int_type sbumpc(); |
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| 151 | int_type sgetc(); |
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| 152 | streamsize sgetn(char_type* __s, streamsize __n); |
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| 153 | |||
| 154 | // 27.6.2.2.4 Putback: |
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| 155 | int_type sputbackc(char_type __c); |
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| 156 | int_type sungetc(); |
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| 157 | |||
| 158 | // 27.6.2.2.5 Put area: |
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| 159 | int_type sputc(char_type __c); |
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| 160 | streamsize sputn(const char_type* __s, streamsize __n); |
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| 161 | |||
| 162 | protected: |
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| 163 | basic_streambuf(); |
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| 164 | basic_streambuf(const basic_streambuf& __rhs); |
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| 165 | basic_streambuf& operator=(const basic_streambuf& __rhs); |
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| 166 | void swap(basic_streambuf& __rhs); |
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| 167 | |||
| 168 | // 27.6.2.3.2 Get area: |
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| 169 | _LIBCPP_ALWAYS_INLINE char_type* eback() const {return __binp_;}
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| 170 | _LIBCPP_ALWAYS_INLINE char_type* gptr() const {return __ninp_;}
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| 171 | _LIBCPP_ALWAYS_INLINE char_type* egptr() const {return __einp_;}
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| 172 | void gbump(int __n); |
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| 173 | void setg(char_type* __gbeg, char_type* __gnext, char_type* __gend); |
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| 174 | |||
| 175 | // 27.6.2.3.3 Put area: |
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| 176 | _LIBCPP_ALWAYS_INLINE char_type* pbase() const {return __bout_;}
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| 177 | _LIBCPP_ALWAYS_INLINE char_type* pptr() const {return __nout_;}
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| 178 | _LIBCPP_ALWAYS_INLINE char_type* epptr() const {return __eout_;}
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| 179 | void pbump(int __n); |
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| 180 | void setp(char_type* __pbeg, char_type* __pend); |
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| 181 | |||
| 182 | // 27.6.2.4 virtual functions: |
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| 183 | // 27.6.2.4.1 Locales: |
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| 184 | virtual void imbue(const locale& __loc); |
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| 185 | |||
| 186 | // 27.6.2.4.2 Buffer management and positioning: |
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| 187 | virtual basic_streambuf* setbuf(char_type* __s, streamsize __n); |
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| 188 | virtual pos_type seekoff(off_type __off, ios_base::seekdir __way, |
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| 189 | ios_base::openmode __which = ios_base::in | ios_base::out); |
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| 190 | virtual pos_type seekpos(pos_type __sp, |
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| 191 | ios_base::openmode __which = ios_base::in | ios_base::out); |
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| 192 | virtual int sync(); |
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| 193 | |||
| 194 | // 27.6.2.4.3 Get area: |
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| 195 | virtual streamsize showmanyc(); |
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| 196 | virtual streamsize xsgetn(char_type* __s, streamsize __n); |
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| 197 | virtual int_type underflow(); |
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| 198 | virtual int_type uflow(); |
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| 199 | |||
| 200 | // 27.6.2.4.4 Putback: |
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| 201 | virtual int_type pbackfail(int_type __c = traits_type::eof()); |
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| 202 | |||
| 203 | // 27.6.2.4.5 Put area: |
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| 204 | virtual streamsize xsputn(const char_type* __s, streamsize __n); |
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| 205 | virtual int_type overflow(int_type __c = traits_type::eof()); |
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| 206 | |||
| 207 | private: |
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| 208 | locale __loc_; |
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| 209 | char_type* __binp_; |
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| 210 | char_type* __ninp_; |
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| 211 | char_type* __einp_; |
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| 212 | char_type* __bout_; |
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| 213 | char_type* __nout_; |
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| 214 | char_type* __eout_; |
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| 215 | }; |
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| 216 | |||
| 217 | template <class _CharT, class _Traits> |
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| 218 | basic_streambuf<_CharT, _Traits>::~basic_streambuf() |
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| 219 | {
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| 220 | } |
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| 221 | |||
| 222 | template <class _CharT, class _Traits> |
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| 223 | inline _LIBCPP_INLINE_VISIBILITY |
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| 224 | locale |
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| 225 | basic_streambuf<_CharT, _Traits>::pubimbue(const locale& __loc) |
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| 226 | {
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| 227 | imbue(__loc); |
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| 228 | locale __r = __loc_; |
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| 229 | __loc_ = __loc; |
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| 230 | return __r; |
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| 231 | } |
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| 232 | |||
| 233 | template <class _CharT, class _Traits> |
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| 234 | inline _LIBCPP_INLINE_VISIBILITY |
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| 235 | locale |
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| 236 | basic_streambuf<_CharT, _Traits>::getloc() const |
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| 237 | {
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| 238 | return __loc_; |
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| 239 | } |
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| 240 | |||
| 241 | template <class _CharT, class _Traits> |
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| 242 | inline _LIBCPP_INLINE_VISIBILITY |
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| 243 | basic_streambuf<_CharT, _Traits>* |
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| 244 | basic_streambuf<_CharT, _Traits>::pubsetbuf(char_type* __s, streamsize __n) |
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| 245 | {
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| 246 | return setbuf(__s, __n); |
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| 247 | } |
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| 248 | |||
| 249 | template <class _CharT, class _Traits> |
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| 250 | inline _LIBCPP_INLINE_VISIBILITY |
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| 251 | typename basic_streambuf<_CharT, _Traits>::pos_type |
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| 252 | basic_streambuf<_CharT, _Traits>::pubseekoff(off_type __off, |
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| 253 | ios_base::seekdir __way, |
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| 254 | ios_base::openmode __which) |
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| 255 | {
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| 256 | return seekoff(__off, __way, __which); |
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| 257 | } |
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| 258 | |||
| 259 | template <class _CharT, class _Traits> |
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| 260 | inline _LIBCPP_INLINE_VISIBILITY |
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| 261 | typename basic_streambuf<_CharT, _Traits>::pos_type |
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| 262 | basic_streambuf<_CharT, _Traits>::pubseekpos(pos_type __sp, |
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| 263 | ios_base::openmode __which) |
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| 264 | {
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| 265 | return seekpos(__sp, __which); |
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| 266 | } |
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| 267 | |||
| 268 | template <class _CharT, class _Traits> |
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| 269 | inline _LIBCPP_INLINE_VISIBILITY |
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| 270 | int |
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| 271 | basic_streambuf<_CharT, _Traits>::pubsync() |
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| 272 | {
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| 273 | return sync(); |
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| 274 | } |
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| 275 | |||
| 276 | template <class _CharT, class _Traits> |
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| 277 | inline _LIBCPP_INLINE_VISIBILITY |
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| 278 | streamsize |
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| 279 | basic_streambuf<_CharT, _Traits>::in_avail() |
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| 280 | {
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| 281 | if (__ninp_ < __einp_) |
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| 282 | return static_cast<streamsize>(__einp_ - __ninp_); |
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| 283 | return showmanyc(); |
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| 284 | } |
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| 285 | |||
| 286 | template <class _CharT, class _Traits> |
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| 287 | inline _LIBCPP_INLINE_VISIBILITY |
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| 288 | typename basic_streambuf<_CharT, _Traits>::int_type |
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| 289 | basic_streambuf<_CharT, _Traits>::snextc() |
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| 290 | {
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| 291 | if (sbumpc() == traits_type::eof()) |
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| 292 | return traits_type::eof(); |
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| 293 | return sgetc(); |
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| 294 | } |
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| 295 | |||
| 296 | template <class _CharT, class _Traits> |
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| 297 | inline _LIBCPP_INLINE_VISIBILITY |
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| 298 | typename basic_streambuf<_CharT, _Traits>::int_type |
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| 299 | basic_streambuf<_CharT, _Traits>::sbumpc() |
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| 300 | {
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| 301 | if (__ninp_ == __einp_) |
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| 302 | return uflow(); |
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| 303 | return traits_type::to_int_type(*__ninp_++); |
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| 304 | } |
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| 305 | |||
| 306 | template <class _CharT, class _Traits> |
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| 307 | inline _LIBCPP_INLINE_VISIBILITY |
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| 308 | typename basic_streambuf<_CharT, _Traits>::int_type |
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| 309 | basic_streambuf<_CharT, _Traits>::sgetc() |
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| 310 | {
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| 311 | if (__ninp_ == __einp_) |
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| 312 | return underflow(); |
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| 313 | return traits_type::to_int_type(*__ninp_); |
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| 314 | } |
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| 315 | |||
| 316 | template <class _CharT, class _Traits> |
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| 317 | inline _LIBCPP_INLINE_VISIBILITY |
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| 318 | streamsize |
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| 319 | basic_streambuf<_CharT, _Traits>::sgetn(char_type* __s, streamsize __n) |
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| 320 | {
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| 321 | return xsgetn(__s, __n); |
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| 322 | } |
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| 323 | |||
| 324 | template <class _CharT, class _Traits> |
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| 325 | inline _LIBCPP_INLINE_VISIBILITY |
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| 326 | typename basic_streambuf<_CharT, _Traits>::int_type |
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| 327 | basic_streambuf<_CharT, _Traits>::sputbackc(char_type __c) |
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| 328 | {
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| 329 | if (__binp_ == __ninp_ || !traits_type::eq(__c, __ninp_[-1])) |
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| 330 | return pbackfail(traits_type::to_int_type(__c)); |
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| 331 | return traits_type::to_int_type(*--__ninp_); |
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| 332 | } |
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| 333 | |||
| 334 | template <class _CharT, class _Traits> |
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| 335 | inline _LIBCPP_INLINE_VISIBILITY |
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| 336 | typename basic_streambuf<_CharT, _Traits>::int_type |
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| 337 | basic_streambuf<_CharT, _Traits>::sungetc() |
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| 338 | {
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| 339 | if (__binp_ == __ninp_) |
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| 340 | return pbackfail(); |
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| 341 | return traits_type::to_int_type(*--__ninp_); |
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| 342 | } |
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| 343 | |||
| 344 | template <class _CharT, class _Traits> |
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| 345 | inline _LIBCPP_INLINE_VISIBILITY |
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| 346 | typename basic_streambuf<_CharT, _Traits>::int_type |
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| 347 | basic_streambuf<_CharT, _Traits>::sputc(char_type __c) |
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| 348 | {
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| 349 | if (__nout_ == __eout_) |
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| 350 | return overflow(traits_type::to_int_type(__c)); |
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| 351 | *__nout_++ = __c; |
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| 352 | return traits_type::to_int_type(__c); |
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| 353 | } |
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| 354 | |||
| 355 | template <class _CharT, class _Traits> |
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| 356 | inline _LIBCPP_INLINE_VISIBILITY |
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| 357 | streamsize |
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| 358 | basic_streambuf<_CharT, _Traits>::sputn(const char_type* __s, streamsize __n) |
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| 359 | {
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| 360 | return xsputn(__s, __n); |
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| 361 | } |
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| 362 | |||
| 363 | template <class _CharT, class _Traits> |
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| 364 | basic_streambuf<_CharT, _Traits>::basic_streambuf() |
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| 365 | : __binp_(0), |
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| 366 | __ninp_(0), |
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| 367 | __einp_(0), |
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| 368 | __bout_(0), |
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| 369 | __nout_(0), |
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| 370 | __eout_(0) |
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| 371 | {
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| 372 | } |
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| 373 | |||
| 374 | template <class _CharT, class _Traits> |
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| 375 | basic_streambuf<_CharT, _Traits>::basic_streambuf(const basic_streambuf& __sb) |
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| 376 | : __loc_(__sb.__loc_), |
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| 377 | __binp_(__sb.__binp_), |
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| 378 | __ninp_(__sb.__ninp_), |
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| 379 | __einp_(__sb.__einp_), |
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| 380 | __bout_(__sb.__bout_), |
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| 381 | __nout_(__sb.__nout_), |
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| 382 | __eout_(__sb.__eout_) |
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| 383 | {
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| 384 | } |
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| 385 | |||
| 386 | template <class _CharT, class _Traits> |
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| 387 | basic_streambuf<_CharT, _Traits>& |
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| 388 | basic_streambuf<_CharT, _Traits>::operator=(const basic_streambuf& __sb) |
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| 389 | {
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| 390 | __loc_ = __sb.__loc_; |
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| 391 | __binp_ = __sb.__binp_; |
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| 392 | __ninp_ = __sb.__ninp_; |
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| 393 | __einp_ = __sb.__einp_; |
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| 394 | __bout_ = __sb.__bout_; |
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| 395 | __nout_ = __sb.__nout_; |
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| 396 | __eout_ = __sb.__eout_; |
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| 397 | return *this; |
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| 398 | } |
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| 399 | |||
| 400 | template <class _CharT, class _Traits> |
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| 401 | void |
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| 402 | basic_streambuf<_CharT, _Traits>::swap(basic_streambuf& __sb) |
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| 403 | {
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| 404 | _VSTD::swap(__loc_, __sb.__loc_); |
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| 405 | _VSTD::swap(__binp_, __sb.__binp_); |
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| 406 | _VSTD::swap(__ninp_, __sb.__ninp_); |
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| 407 | _VSTD::swap(__einp_, __sb.__einp_); |
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| 408 | _VSTD::swap(__bout_, __sb.__bout_); |
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| 409 | _VSTD::swap(__nout_, __sb.__nout_); |
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| 410 | _VSTD::swap(__eout_, __sb.__eout_); |
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| 411 | } |
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| 412 | |||
| 413 | template <class _CharT, class _Traits> |
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| 414 | inline _LIBCPP_INLINE_VISIBILITY |
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| 415 | void |
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| 416 | basic_streambuf<_CharT, _Traits>::gbump(int __n) |
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| 417 | {
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| 418 | __ninp_ += __n; |
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| 419 | } |
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| 420 | |||
| 421 | template <class _CharT, class _Traits> |
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| 422 | inline _LIBCPP_INLINE_VISIBILITY |
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| 423 | void |
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| 424 | basic_streambuf<_CharT, _Traits>::setg(char_type* __gbeg, char_type* __gnext, |
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| 425 | char_type* __gend) |
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| 426 | {
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| 427 | __binp_ = __gbeg; |
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| 428 | __ninp_ = __gnext; |
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| 429 | __einp_ = __gend; |
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| 430 | } |
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| 431 | |||
| 432 | template <class _CharT, class _Traits> |
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| 433 | inline _LIBCPP_INLINE_VISIBILITY |
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| 434 | void |
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| 435 | basic_streambuf<_CharT, _Traits>::pbump(int __n) |
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| 436 | {
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| 437 | __nout_ += __n; |
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| 438 | } |
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| 439 | |||
| 440 | template <class _CharT, class _Traits> |
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| 441 | inline _LIBCPP_INLINE_VISIBILITY |
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| 442 | void |
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| 443 | basic_streambuf<_CharT, _Traits>::setp(char_type* __pbeg, char_type* __pend) |
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| 444 | {
|
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| 445 | __bout_ = __nout_ = __pbeg; |
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| 446 | __eout_ = __pend; |
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| 447 | } |
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| 448 | |||
| 449 | template <class _CharT, class _Traits> |
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| 450 | void |
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| 451 | basic_streambuf<_CharT, _Traits>::imbue(const locale&) |
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| 452 | {
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| 453 | } |
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| 454 | |||
| 455 | template <class _CharT, class _Traits> |
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| 456 | basic_streambuf<_CharT, _Traits>* |
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| 457 | basic_streambuf<_CharT, _Traits>::setbuf(char_type*, streamsize) |
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| 458 | {
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| 459 | return this; |
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| 460 | } |
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| 461 | |||
| 462 | template <class _CharT, class _Traits> |
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| 463 | typename basic_streambuf<_CharT, _Traits>::pos_type |
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| 464 | basic_streambuf<_CharT, _Traits>::seekoff(off_type, ios_base::seekdir, |
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| 465 | ios_base::openmode) |
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| 466 | {
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| 467 | return pos_type(off_type(-1)); |
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| 468 | } |
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| 469 | |||
| 470 | template <class _CharT, class _Traits> |
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| 471 | typename basic_streambuf<_CharT, _Traits>::pos_type |
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| 472 | basic_streambuf<_CharT, _Traits>::seekpos(pos_type, ios_base::openmode) |
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| 473 | {
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| 474 | return pos_type(off_type(-1)); |
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| 475 | } |
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| 476 | |||
| 477 | template <class _CharT, class _Traits> |
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| 478 | int |
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| 479 | basic_streambuf<_CharT, _Traits>::sync() |
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| 480 | {
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| 481 | return 0; |
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| 482 | } |
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| 483 | |||
| 484 | template <class _CharT, class _Traits> |
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| 485 | streamsize |
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| 486 | basic_streambuf<_CharT, _Traits>::showmanyc() |
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| 487 | {
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| 488 | return 0; |
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| 489 | } |
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| 490 | |||
| 491 | template <class _CharT, class _Traits> |
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| 492 | streamsize |
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| 493 | basic_streambuf<_CharT, _Traits>::xsgetn(char_type* __s, streamsize __n) |
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| 494 | {
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| 495 | const int_type __eof = traits_type::eof(); |
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| 496 | int_type __c; |
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| 497 | streamsize __i = 0; |
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| 498 | for (;__i < __n; ++__i, ++__s) |
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| 499 | {
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| 500 | if (__ninp_ < __einp_) |
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| 501 | *__s = *__ninp_++; |
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| 502 | else if ((__c = uflow()) != __eof) |
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| 503 | *__s = traits_type::to_char_type(__c); |
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| 504 | else |
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| 505 | break; |
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| 506 | } |
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| 507 | return __i; |
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| 508 | } |
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| 509 | |||
| 510 | template <class _CharT, class _Traits> |
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| 511 | typename basic_streambuf<_CharT, _Traits>::int_type |
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| 512 | basic_streambuf<_CharT, _Traits>::underflow() |
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| 513 | {
|
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| 514 | return traits_type::eof(); |
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| 515 | } |
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| 516 | |||
| 517 | template <class _CharT, class _Traits> |
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| 518 | typename basic_streambuf<_CharT, _Traits>::int_type |
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| 519 | basic_streambuf<_CharT, _Traits>::uflow() |
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| 520 | {
|
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| 521 | if (underflow() == traits_type::eof()) |
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| 522 | return traits_type::eof(); |
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| 523 | return traits_type::to_int_type(*__ninp_++); |
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| 524 | } |
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| 525 | |||
| 526 | template <class _CharT, class _Traits> |
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| 527 | typename basic_streambuf<_CharT, _Traits>::int_type |
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| 528 | basic_streambuf<_CharT, _Traits>::pbackfail(int_type) |
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| 529 | {
|
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| 530 | return traits_type::eof(); |
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| 531 | } |
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| 532 | |||
| 533 | template <class _CharT, class _Traits> |
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| 534 | streamsize |
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| 535 | basic_streambuf<_CharT, _Traits>::xsputn(const char_type* __s, streamsize __n) |
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| 536 | {
|
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| 537 | streamsize __i = 0; |
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| 538 | int_type __eof = traits_type::eof(); |
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| 539 | while( __i < __n) |
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| 540 | {
|
||
| 541 | if (__nout_ >= __eout_) |
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| 542 | {
|
||
| 543 | if (overflow(traits_type::to_int_type(*__s)) == __eof) |
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| 544 | break; |
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| 545 | ++__s; |
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| 546 | ++__i; |
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| 547 | } |
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| 548 | else |
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| 549 | {
|
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| 550 | streamsize __chunk_size = _VSTD::min(__eout_ - __nout_, __n - __i); |
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| 551 | traits_type::copy(__nout_, __s, __chunk_size); |
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| 552 | __nout_ += __chunk_size; |
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| 553 | __s += __chunk_size; |
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| 554 | __i += __chunk_size; |
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| 555 | } |
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| 556 | } |
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| 557 | return __i; |
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| 558 | } |
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| 559 | |||
| 560 | template <class _CharT, class _Traits> |
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| 561 | typename basic_streambuf<_CharT, _Traits>::int_type |
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| 562 | basic_streambuf<_CharT, _Traits>::overflow(int_type) |
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| 563 | {
|
||
| 564 | return traits_type::eof(); |
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| 565 | } |
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| 566 | |||
| 567 | _LIBCPP_EXTERN_TEMPLATE(class _LIBCPP_TYPE_VIS basic_streambuf<char>) |
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| 568 | _LIBCPP_EXTERN_TEMPLATE(class _LIBCPP_TYPE_VIS basic_streambuf<wchar_t>) |
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| 569 | |||
| 570 | _LIBCPP_EXTERN_TEMPLATE(class _LIBCPP_TYPE_VIS basic_ios<char>) |
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| 571 | _LIBCPP_EXTERN_TEMPLATE(class _LIBCPP_TYPE_VIS basic_ios<wchar_t>) |
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| 572 | |||
| 573 | _LIBCPP_END_NAMESPACE_STD |
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| 574 | |||
| 575 | #endif // _LIBCPP_STEAMBUF |