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comparison: build/stlport/src/stdio_streambuf.h
build/stlport/src/stdio_streambuf.h
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| -1:000000000000 | 0:7ede6f16df50 |
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| 1 /* | |
| 2 * Copyright (c) 1999 | |
| 3 * Silicon Graphics Computer Systems, Inc. | |
| 4 * | |
| 5 * Copyright (c) 1999 | |
| 6 * Boris Fomitchev | |
| 7 * | |
| 8 * This material is provided "as is", with absolutely no warranty expressed | |
| 9 * or implied. Any use is at your own risk. | |
| 10 * | |
| 11 * Permission to use or copy this software for any purpose is hereby granted | |
| 12 * without fee, provided the above notices are retained on all copies. | |
| 13 * Permission to modify the code and to distribute modified code is granted, | |
| 14 * provided the above notices are retained, and a notice that the code was | |
| 15 * modified is included with the above copyright notice. | |
| 16 * | |
| 17 */ | |
| 18 | |
| 19 // This header defines two streambufs: | |
| 20 // stdio_istreambuf, a read-only streambuf synchronized with a C stdio | |
| 21 // FILE object | |
| 22 // stdio_ostreambuf, a write-only streambuf synchronized with a C stdio | |
| 23 // FILE object. | |
| 24 // Note that neither stdio_istreambuf nor stdio_ostreambuf is a template; | |
| 25 // both classes are derived from basic_streambuf<char, char_traits<char> >. | |
| 26 | |
| 27 // Note: the imbue() member function is a no-op. In particular, these | |
| 28 // classes assume that codecvt<char, char, mbstate_t> is always an identity | |
| 29 // transformation. This is true of the default locale, and of all locales | |
| 30 // defined for the C I/O library. If you need to use a locale where | |
| 31 // the codecvt<char, char, mbstate_t> facet performs a nontrivial | |
| 32 // conversion, then you should use basic_filebuf<> instead of stdio_istreambuf | |
| 33 // or stdio_ostreambuf. (If you don't understand what any of this means, | |
| 34 // then it's not a feature you need to worry about. Locales where | |
| 35 // codecvt<char, char, mbstate_t> does something nontrivial are a rare | |
| 36 // corner case.) | |
| 37 | |
| 38 | |
| 39 #ifndef _STLP_STDIO_STREAMBUF | |
| 40 #define _STLP_STDIO_STREAMBUF | |
| 41 | |
| 42 #include <streambuf> | |
| 43 #include <cstdio> // For FILE. | |
| 44 | |
| 45 _STLP_BEGIN_NAMESPACE | |
| 46 _STLP_MOVE_TO_PRIV_NAMESPACE | |
| 47 | |
| 48 // Base class for features common to stdio_istreambuf and stdio_ostreambuf | |
| 49 class stdio_streambuf_base : | |
| 50 public basic_streambuf<char, char_traits<char> > /* FILE_basic_streambuf */ { | |
| 51 public: // Constructor, destructor. | |
| 52 // The argument may not be null. It must be an open file pointer. | |
| 53 stdio_streambuf_base(FILE*); | |
| 54 | |
| 55 // The destructor flushes the stream, but does not close it. | |
| 56 ~stdio_streambuf_base(); | |
| 57 | |
| 58 protected: // Virtual functions from basic_streambuf. | |
| 59 streambuf* setbuf(char*, streamsize); | |
| 60 | |
| 61 pos_type seekoff(off_type, ios_base::seekdir, | |
| 62 ios_base::openmode | |
| 63 = ios_base::in | ios_base::out); | |
| 64 pos_type seekpos(pos_type, | |
| 65 ios_base::openmode | |
| 66 = ios_base::in | ios_base::out); | |
| 67 int sync(); | |
| 68 | |
| 69 protected: | |
| 70 FILE* _M_file; | |
| 71 }; | |
| 72 | |
| 73 class stdio_istreambuf : public stdio_streambuf_base { | |
| 74 public: // Constructor, destructor. | |
| 75 stdio_istreambuf(FILE* __f) : stdio_streambuf_base(__f) {} | |
| 76 ~stdio_istreambuf(); | |
| 77 | |
| 78 protected: // Virtual functions from basic_streambuf. | |
| 79 streamsize showmanyc(); | |
| 80 int_type underflow(); | |
| 81 int_type uflow(); | |
| 82 virtual int_type pbackfail(int_type c = traits_type::eof()); | |
| 83 }; | |
| 84 | |
| 85 class stdio_ostreambuf : public stdio_streambuf_base { | |
| 86 public: // Constructor, destructor. | |
| 87 stdio_ostreambuf(FILE* __f) : stdio_streambuf_base(__f) {} | |
| 88 ~stdio_ostreambuf(); | |
| 89 | |
| 90 protected: // Virtual functions from basic_streambuf. | |
| 91 streamsize showmanyc(); | |
| 92 int_type overflow(int_type c = traits_type::eof()); | |
| 93 }; | |
| 94 | |
| 95 _STLP_MOVE_TO_STD_NAMESPACE | |
| 96 _STLP_END_NAMESPACE | |
| 97 | |
| 98 #endif /* _STLP_STDIO_STREAMBUF */ | |
| 99 | |
| 100 // Local Variables: | |
| 101 // mode:C++ | |
| 102 // End: |
