File contents
/*ident "@(#)cls4:lib/stream/fstream.c 1.5" */
/*******************************************************************************
C++ source for the C++ Language System, Release 3.0. This product
is a new release of the original cfront developed in the computer
science research center of AT&T Bell Laboratories.
Copyright (c) 1993 UNIX System Laboratories, Inc.
Copyright (c) 1991, 1992 AT&T and UNIX System Laboratories, Inc.
Copyright (c) 1984, 1989, 1990 AT&T. All Rights Reserved.
THIS IS UNPUBLISHED PROPRIETARY SOURCE CODE of AT&T and UNIX System
Laboratories, Inc. The copyright notice above does not evidence
any actual or intended publication of such source code.
*******************************************************************************/
#include <iostream.h>
#include <fstream.h>
//static const int ios_atend = ios::ate ;
static const int ios_input = ios::in ;
static const int ios_output = ios::out ;
//static const int ios_append = ios::app ;
//static const int seek_cur = ios::cur ;
//static const int seek_end = ios::end ;
//static const int seek_beg = ios::beg ;
fstreambase::fstreambase() { init(&buf) ; }
fstreambase::fstreambase(const char* name, int mode, int prot)
{
init(&buf) ;
open(name,mode,prot) ;
}
fstreambase::fstreambase(int fd)
: buf(fd)
{
init(&buf) ;
}
fstreambase::fstreambase(int fd, char* p, int l)
: buf(fd,p,l)
{
init(&buf) ;
}
inline void fstreambase::verify(int ok)
{
if ( ok ) clear(0) ;
else setstate(ios::failbit) ;
}
void fstreambase::setbuf(char* p, int len)
{
verify(buf.setbuf(p,len) != 0 ) ;
}
void fstreambase::open(const char* name, int mode, int prot)
{
verify(buf.open(name,mode,prot) != 0 ) ;
}
void fstreambase::attach(int fd )
{
verify(buf.attach(fd) != 0 ) ;
}
int fstreambase::detach()
{
return(buf.detach()) ;
}
void fstreambase::close()
{
verify(buf.close() != (filebuf*)0 ) ;
}
fstreambase::~fstreambase() { }
ifstream::ifstream() { }
ifstream::ifstream(const char* name, int mode, int prot)
: fstreambase(name,mode|ios_input,prot) { }
ifstream::ifstream(int fd) : fstreambase(fd) { }
ifstream::ifstream(int fd, char* p, int l) : fstreambase(fd,p,l) { }
ifstream::~ifstream() { }
void ifstream::open(const char* name, int mode, int prot)
{
verify(rdbuf()->open(name,mode|ios_input,prot) != (filebuf*)0 ) ;
}
ofstream::ofstream() { }
ofstream::ofstream(const char* name, int mode, int prot)
: fstreambase(name,mode|ios_output,prot) { }
ofstream::ofstream(int fd) : fstreambase(fd) { }
ofstream::ofstream(int fd, char* p, int l) : fstreambase(fd,p,l) { }
ofstream::~ofstream() { }
void ofstream::open(const char* name, int mode, int prot)
{
verify(rdbuf()->open(name,mode|ios_output,prot) != (filebuf*)0 ) ;
}
fstream::fstream() { }
fstream::fstream(const char* name, int mode, int prot)
: fstreambase(name,mode,prot) { }
fstream::fstream(int fd) : fstreambase(fd) { }
fstream::fstream(int fd, char* p, int l) : fstreambase(fd,p,l) { }
fstream::~fstream() { }
void fstream::open(const char* name, int mode, int prot)
{
verify(rdbuf()->open(name,mode,prot) != (filebuf*)0 ) ;
}