windows-nt/Source/XPSP1/NT/base/crts/crtw32/iostream/ostream1.cpp
2020-09-26 16:20:57 +08:00

71 lines
1.4 KiB
C++

/***
* ostream1.cpp - definitions for ostream class non-core member functions
*
* Copyright (c) 1991-2001, Microsoft Corporation. All rights reserved.
*
*Purpose:
* Contains the non-core member function definitions for ostream class.
*
*Revision History:
* 07-01-91 KRS Created. Split out from ostream.cxx for granularity.
* 11-20-91 KRS Make operator= inline.
* 03-30-92 KRS Add multithread locks.
* 06-14-95 CFW Comment cleanup.
*
*******************************************************************************/
#include <cruntime.h>
#include <internal.h>
#include <iostream.h>
#pragma hdrstop
ostream& ostream::seekp(streampos _strmp)
{
lockbuf();
if (bp->seekpos(_strmp, ios::out)==EOF)
clear(state | failbit);
unlockbuf();
return(*this);
}
ostream& ostream::seekp(streamoff _strmf, seek_dir _sd)
{
lockbuf();
if (bp->seekoff(_strmf, _sd, ios::out)==EOF)
clear(state | failbit);
unlockbuf();
return(*this);
}
streampos ostream::tellp()
{
streampos retval;
lockbuf();
if ((retval=bp->seekoff(streamoff(0), ios::cur, ios::out))==EOF)
clear(state | failbit);
unlockbuf();
return(retval);
}
ostream& ostream::operator<<(streambuf * instm)
{
int c;
if (opfx())
{
while ((c=instm->sbumpc())!=EOF)
if (bp->sputc(c) == EOF)
{
state |= failbit;
break;
}
osfx();
}
return *this;
}