213 lines
6.5 KiB
C++
213 lines
6.5 KiB
C++
/***
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*fstream.h - definitions/declarations for filebuf and fstream classes
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*
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* Copyright (c) 1991-2001, Microsoft Corporation. All rights reserved.
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*
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*Purpose:
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* This file defines the classes, values, macros, and functions
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* used by the filebuf and fstream classes.
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* [AT&T C++]
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*
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* [Public]
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*
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*Revision History:
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* 01-23-92 KRS Ported from 16-bit version.
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* 08-19-92 KRS Remove sh_compat for NT.
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* 02-23-93 SKS Update copyright to 1993
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* 03-23-93 CFW Modified #pragma warnings.
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* 09-01-93 GJF Merged Cuda and NT SDK versions.
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* 10-13-93 GJF Enclose #pragma-s in #ifdef _MSC_VER
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* 08-12-94 GJF Disable warning 4514 instead of 4505.
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* 11-03-94 GJF Changed pack pragma to 8 byte alignment.
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* 02-11-95 CFW Add _CRTBLD to avoid users getting wrong headers.
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* 02-14-95 CFW Clean up Mac merge.
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* 05-11-95 CFW Only for use by C++ programs.
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* 12-14-95 JWM Add "#pragma once".
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* 04-09-96 SKS Change _CRTIMP to _CRTIMP1 for special iostream build
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* 04-15-96 JWM Remove _OLD_IOSTREAMS, add '#pragma comment(lib,"cirt")'.
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* 04-16-96 JWM '#include useoldio.h' replaces '#pragma comment(...)'.
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* 02-21-97 GJF Cleaned out obsolete support for _NTSDK. Also,
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* detab-ed.
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* 05-17-99 PML Remove all Macintosh support.
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*
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****/
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#if _MSC_VER > 1000 /*IFSTRIP=IGN*/
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#pragma once
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#endif
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#ifdef __cplusplus
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#ifndef _INC_FSTREAM
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#define _INC_FSTREAM
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#if !defined(_WIN32)
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#error ERROR: Only Win32 target supported!
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#endif
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#ifndef _CRTBLD
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/* This version of the header files is NOT for user programs.
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* It is intended for use when building the C runtimes ONLY.
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* The version intended for public use will not have this message.
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*/
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#error ERROR: Use of C runtime library internal header file.
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#endif /* _CRTBLD */
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#ifdef _MSC_VER
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// Currently, all MS C compilers for Win32 platforms default to 8 byte
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// alignment.
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#pragma pack(push,8)
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#include <useoldio.h>
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#endif // _MSC_VER
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/* Define _CRTIMP */
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#ifndef _CRTIMP
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#ifdef CRTDLL
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#define _CRTIMP __declspec(dllexport)
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#else /* ndef CRTDLL */
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#ifdef _DLL
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#define _CRTIMP __declspec(dllimport)
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#else /* ndef _DLL */
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#define _CRTIMP
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#endif /* _DLL */
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#endif /* CRTDLL */
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#endif /* _CRTIMP */
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#ifndef _INTERNAL_IFSTRIP_
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/* Define _CRTIMP1 */
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#ifndef _CRTIMP1
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#ifdef CRTDLL1
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#define _CRTIMP1 __declspec(dllexport)
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#else /* ndef CRTDLL1 */
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#define _CRTIMP1 _CRTIMP
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#endif /* CRTDLL1 */
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#endif /* _CRTIMP1 */
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#endif /* _INTERNAL_IFSTRIP_ */
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#include <iostream.h>
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#ifdef _MSC_VER
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// C4514: "unreferenced inline function has been removed"
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#pragma warning(disable:4514) // disable C4514 warning
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// #pragma warning(default:4514) // use this to reenable, if desired
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#endif // _MSC_VER
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typedef int filedesc;
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class _CRTIMP1 filebuf : public streambuf {
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public:
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static const int openprot; // default share/prot mode for open
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// optional share values for 3rd argument (prot) of open or constructor
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static const int sh_none; // exclusive mode no sharing
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static const int sh_read; // allow read sharing
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static const int sh_write; // allow write sharing
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// use (sh_read | sh_write) to allow both read and write sharing
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// options for setmode member function
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static const int binary;
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static const int text;
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filebuf();
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filebuf(filedesc);
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filebuf(filedesc, char *, int);
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~filebuf();
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filebuf* attach(filedesc);
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filedesc fd() const { return (x_fd==-1) ? EOF : x_fd; }
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int is_open() const { return (x_fd!=-1); }
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filebuf* open(const char *, int, int = filebuf::openprot);
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filebuf* close();
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int setmode(int = filebuf::text);
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virtual int overflow(int=EOF);
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virtual int underflow();
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virtual streambuf* setbuf(char *, int);
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virtual streampos seekoff(streamoff, ios::seek_dir, int);
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// virtual streampos seekpos(streampos, int);
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virtual int sync();
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private:
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filedesc x_fd;
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int x_fOpened;
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};
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class _CRTIMP1 ifstream : public istream {
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public:
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ifstream();
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ifstream(const char *, int =ios::in, int = filebuf::openprot);
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ifstream(filedesc);
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ifstream(filedesc, char *, int);
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~ifstream();
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streambuf * setbuf(char *, int);
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filebuf* rdbuf() const { return (filebuf*) ios::rdbuf(); }
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void attach(filedesc);
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filedesc fd() const { return rdbuf()->fd(); }
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int is_open() const { return rdbuf()->is_open(); }
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void open(const char *, int =ios::in, int = filebuf::openprot);
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void close();
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int setmode(int mode = filebuf::text) { return rdbuf()->setmode(mode); }
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};
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class _CRTIMP1 ofstream : public ostream {
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public:
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ofstream();
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ofstream(const char *, int =ios::out, int = filebuf::openprot);
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ofstream(filedesc);
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ofstream(filedesc, char *, int);
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~ofstream();
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streambuf * setbuf(char *, int);
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filebuf* rdbuf() const { return (filebuf*) ios::rdbuf(); }
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void attach(filedesc);
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filedesc fd() const { return rdbuf()->fd(); }
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int is_open() const { return rdbuf()->is_open(); }
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void open(const char *, int =ios::out, int = filebuf::openprot);
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void close();
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int setmode(int mode = filebuf::text) { return rdbuf()->setmode(mode); }
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};
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class _CRTIMP1 fstream : public iostream {
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public:
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fstream();
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fstream(const char *, int, int = filebuf::openprot);
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fstream(filedesc);
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fstream(filedesc, char *, int);
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~fstream();
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streambuf * setbuf(char *, int);
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filebuf* rdbuf() const { return (filebuf*) ostream::rdbuf(); }
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void attach(filedesc);
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filedesc fd() const { return rdbuf()->fd(); }
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int is_open() const { return rdbuf()->is_open(); }
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void open(const char *, int, int = filebuf::openprot);
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void close();
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int setmode(int mode = filebuf::text) { return rdbuf()->setmode(mode); }
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};
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// manipulators to dynamically change file access mode (filebufs only)
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inline ios& binary(ios& _fstrm) \
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{ ((filebuf*)_fstrm.rdbuf())->setmode(filebuf::binary); return _fstrm; }
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inline ios& text(ios& _fstrm) \
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{ ((filebuf*)_fstrm.rdbuf())->setmode(filebuf::text); return _fstrm; }
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#ifdef _MSC_VER
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#pragma pack(pop)
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#endif // _MSC_VER
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#endif // _INC_FSTREAM
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#endif /* __cplusplus */
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