Category : C++ Source Code
Archive   : STRX.ZIP
Filename : DYNSTREA.CPP

 
Output of file : DYNSTREA.CPP contained in archive : STRX.ZIP
//
// dynstream.cpp : dynstream class implementation
// Author : Roy S. Woll
//
// Copyright (c) 1993 by Roy S. Woll
// You may distribute this source freely as long as you leave all files
// in their original form, including the copyright notice as is.
//
//
// Version 2.00 11/30/92
// Override member function streambuf::sync() Roy S. Woll
//
// Version 1.00 10/20/92
//
//
#include
#include "str.h"
#include "dynstream.h"

dynstreambuf::dynstreambuf(str* AstrPtr):
streambuf(),strPtr(AstrPtr)
{
str::strdata * data = strPtr->data;
setNewBuffer(data->buf, data->cursize, data->curlength);
};

// Create new buffer of size newbufsize
char * dynstreambuf::getNewBuffer(int newbufsize)
{
return strPtr->getNewBuffer(out_waiting(), newbufsize);
};

// Use new buffer as specified by buf
void dynstreambuf::setNewBuffer(char * buf, int newbufsize, int buflen)
{
if (base()) buflen = (int)(pptr() - base());
setb(buf, buf+newbufsize, 0);
setp(buf, ebuf());
pbump(buflen);
};

//
// Called when buffer is full
//
int dynstreambuf::overflow(int c)
{
if (!base())
if (!getNewBuffer(0)) return EOF;

if (!pbase()) setp(base(), ebuf());

if (pbase()){
if (pptr() >= epptr())
if (!getNewBuffer(0)) return EOF;
if (pptr() < epptr()) return sputc(c);
}
return EOF;
};

streampos dynstreambuf::seekoff(streamoff offset, ios::seek_dir dir, int){
streamoff pos = EOF;

if (dir == ios::end) pos = blen() + offset;
else if (dir == ios::beg) pos = offset;
else if (dir == ios::cur) {
if (!pptr()) pos = offset;
else pos = streamoff( (pptr()-base()) + offset);
};
if (pos < 0 || pos > blen()) return EOF;

set_len(pos);
return streampos(pos);
};

void dynstreambuf::set_len(int len){pbump(len- (pptr()-base()));};

void dynstreambuf::set_str(str* AstrPtr){ strPtr = AstrPtr;};

int dynstreambuf::sync(){ return 0; };

dynstream::~dynstream(void){
#ifdef DEBUG_STR
str::dynstreamCount--;
#endif
};

dynstream::dynstream(str* AstrPtr)
:dynstreambase(AstrPtr),ostream(rdbuf())
{
#ifdef DEBUG_STR
str::dynstreamCount++;
#endif
};




  3 Responses to “Category : C++ Source Code
Archive   : STRX.ZIP
Filename : DYNSTREA.CPP
”

  1. Daniel says:
    January 27, 2013 at 3:59 pm

    Very nice! Thank you for this wonderful archive. I wonder why I found it only now. Long live the BBS file archives!

  2. Joshie says:
    March 18, 2014 at 4:57 pm

    This is so awesome! 😀 I’d be cool if you could download an entire archive of this at once, though.

  3. DiskingRound says:
    January 14, 2015 at 10:57 pm

    But one thing that puzzles me is the “mtswslnkmcjklsdlsbdmMICROSOFT” string. There is an article about it here. It is definitely worth a read: http://www.os2museum.com/wp/mtswslnk/