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111 lines
3.0 KiB
C++
111 lines
3.0 KiB
C++
/*ident "@(#)C++env:incl-master/const-headers/fstream.h 1.2" */
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/**************************************************************************
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Copyright (c) 1984 AT&T
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All Rights Reserved
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THIS IS UNPUBLISHED PROPRIETARY SOURCE CODE OF AT&T
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The copyright notice above does not evidence any
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actual or intended publication of such source code.
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*****************************************************************************/
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#ifndef __FSTREAM__
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#define __FSTREAM__
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#include <iostream.h>
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class filebuf : public streambuf { /* a stream buffer for files */
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public:
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filebuf() ;
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filebuf(int fd);
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filebuf(int fd, char* p, int l) ;
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int is_open() { return opened ; }
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int fd() { return xfd ; }
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filebuf* open(const char *name, int om/*, int prot=0664*/); // deleted for Macintosh
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filebuf* attach(int fd) ;
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filebuf* close() ;
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~filebuf() ;
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public: /* virtuals */
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virtual int overflow(int=EOF);
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virtual int underflow();
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virtual int sync() ;
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virtual streampos
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#ifdef __ATT2_1
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seekoff(streamoff,ios::seek_dir,int) ;
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#else /*__ATT2_1*/
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seekoff(streamoff,seek_dir,int) ;
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#endif /*__ATT2_1*/
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virtual streambuf*
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setbuf(char* p, int len) ;
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protected:
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int xfd;
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int mode ;
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char opened;
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streampos last_seek ;
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char* in_start;
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int last_op();
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char lahead[2] ;
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};
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class fstreambase : virtual public ios {
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public:
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fstreambase() ;
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fstreambase(const char* name,
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int mode/*,int prot=0664*/) ; // deleted for Macintosh
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fstreambase(int fd) ;
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fstreambase(int fd, char* p, int l) ;
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~fstreambase() ;
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void open(const char* name, int mode/*, int prot=0664*/) ; // deleted for Macintosh
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void attach(int fd);
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void close() ;
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void setbuf(char* p, int l) ;
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filebuf* rdbuf() { return &buf ; }
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private:
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filebuf buf ;
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protected:
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void verify(int) ;
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} ;
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class ifstream : public fstreambase, public istream {
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public:
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ifstream() ;
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ifstream(const char* name,
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int mode=ios::in /*,int prot=0664*/) ; // for Macintosh
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ifstream(int fd) ;
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ifstream(int fd, char* p, int l) ;
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~ifstream() ;
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filebuf* rdbuf() { return fstreambase::rdbuf(); }
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void open(const char* name, int mode=ios::in/*, int prot=0664*/) ; // deleted for Macintosh
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} ;
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class ofstream : public fstreambase, public ostream {
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public:
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ofstream() ;
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ofstream(const char* name,
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int mode=ios::out/*,int prot=0664*/) ; // for Macintosh
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ofstream(int fd) ;
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ofstream(int fd, char* p, int l) ;
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~ofstream() ;
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filebuf* rdbuf() { return fstreambase::rdbuf(); }
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void open(const char* name, int mode=ios::out /*, int prot=0664*/) ; // deleted for Macintosh
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} ;
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class fstream : public fstreambase, public iostream {
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public:
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fstream() ;
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fstream(const char* name,
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int mode/*,int prot=0664*/) ; // for Macintosh
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fstream(int fd) ;
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fstream(int fd, char* p, int l) ;
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~fstream() ;
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filebuf* rdbuf() { return fstreambase::rdbuf(); }
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void open(const char* name, int mode/*, int prot=0664*/) ; // deleted for Macintosh
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} ;
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#endif
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