Category : OS/2 Files
Archive   : GPPDEV8F.ZIP
Filename : STRSTREA.H

// This is part of the iostream library, providing input/output for C++.
// Copyright (C) 1991 Per Bothner.
//
// This library is free software; you can redistribute it and/or
// modify it under the terms of the GNU Library General Public
// License as published by the Free Software Foundation; either
// version 2 of the License, or (at your option) any later version.
//
// This library is distributed in the hope that it will be useful,
// but WITHOUT ANY WARRANTY; without even the implied warranty of
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
// Library General Public License for more details.
//
// You should have received a copy of the GNU Library General Public
// License along with this library; if not, write to the Free
// Software Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.

#ifndef __STRSTREAM_H
#define __STRSTREAM_H
#ifdef __GNUG__
#pragma interface
#endif
#include

class strstreambuf : public backupbuf {
_G_size_t _len; // The current length is max(_len, _pptr-_pbase).
_G_size_t _size; // Allocated (physical) buffer size.
char *_buffer;
int _frozen;
protected:
virtual int overflow(int = EOF);
virtual int underflow();
public:
strstreambuf();
strstreambuf(int initial);
strstreambuf(char *ptr, int size, char *pstart = NULL);
~strstreambuf();
int frozen() { return _frozen; }
void freeze(int n=1) { _frozen = n != 0; }
_G_size_t pcount();
char *str();
virtual streampos seekoff(streamoff, _seek_dir, int mode=ios::in|ios::out);
};

class istrstream : public istream {
public:
istrstream(char*);
istrstream(char*, int);
strstreambuf* rdbuf() { return (strstreambuf*)_strbuf; }
};

class ostrstream : public ostream {
public:
ostrstream();
ostrstream(char *cp, int n, int mode=ios::out);
_G_size_t pcount() { return ((strstreambuf*)_strbuf)->pcount(); }
char *str() { return ((strstreambuf*)_strbuf)->str(); }
void freeze(int n = 1) { ((strstreambuf*)_strbuf)->freeze(n); }
int frozen() { return ((strstreambuf*)_strbuf)->frozen(); }
strstreambuf* rdbuf() { return (strstreambuf*)_strbuf; }
};

class strstream : public iostream {
public:
strstream();
strstream(char *cp, int n, int mode);
_G_size_t pcount() { return ((strstreambuf*)_strbuf)->pcount(); }
char *str() { return ((strstreambuf*)_strbuf)->str(); }
void freeze(int n = 1) { ((strstreambuf*)_strbuf)->freeze(n); }
int frozen() { return ((strstreambuf*)_strbuf)->frozen(); }
strstreambuf* rdbuf() { return (strstreambuf*)_strbuf; }
};

#endif /*!__STRSTREAM_H*/