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oct-strstrm.h
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C/C++ Source or Header
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1997-08-20
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4KB
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165 lines
/*
Copyright (C) 1996 John W. Eaton
This file is part of Octave.
Octave is free software; you can redistribute it and/or modify it
under the terms of the GNU General Public License as published by the
Free Software Foundation; either version 2, or (at your option) any
later version.
Octave 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 General Public License
for more details.
You should have received a copy of the GNU General Public License
along with Octave; see the file COPYING. If not, write to the Free
Software Foundation, 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
*/
#if !defined (octave_octave_strstream_h)
#define octave_octave_strstream_h 1
#include <string>
#include <strstream.h>
#include "oct-stream.h"
class
octave_base_strstream : public octave_base_stream
{
public:
octave_base_strstream (ios::openmode arg_md = ios::out,
oct_mach_info::float_format flt_fmt =
oct_mach_info::native)
: octave_base_stream (arg_md, flt_fmt) { }
~octave_base_strstream (void) { }
// Position a stream at OFFSET relative to ORIGIN.
int seek (streamoff offset, ios::seek_dir origin);
// Return current stream position.
long tell (void) const;
// The name of the file.
string name (void) { return string (); }
virtual streambuf *rdbuf (void) = 0;
virtual bool bad (void) const = 0;
virtual void clear (void) = 0;
private:
// No copying!
octave_base_strstream (const octave_base_strstream&);
octave_base_strstream& operator = (const octave_base_strstream&);
};
class
octave_istrstream : public octave_base_strstream
{
public:
octave_istrstream (const char *data,
ios::openmode arg_md = ios::out,
oct_mach_info::float_format flt_fmt =
oct_mach_info::native)
: octave_base_strstream (arg_md, flt_fmt), is (data) { }
octave_istrstream (const string& data,
ios::openmode arg_md = ios::out,
oct_mach_info::float_format flt_fmt =
oct_mach_info::native)
: octave_base_strstream (arg_md, flt_fmt), is (data.c_str ()) { }
~octave_istrstream (void) { }
// Return non-zero if EOF has been reached on this stream.
bool eof (void) const { return is.eof (); }
istream *input_stream (void) { return &is; }
ostream *output_stream (void) { return 0; }
streambuf *rdbuf (void) { return is ? is.rdbuf () : 0; }
bool bad (void) const { return is.bad (); }
void clear (void) { is.clear (); }
private:
istrstream is;
// No copying!
octave_istrstream (const octave_istrstream&);
octave_istrstream& operator = (const octave_istrstream&);
};
class
octave_ostrstream : public octave_base_strstream
{
public:
octave_ostrstream (ios::openmode arg_md = ios::out,
oct_mach_info::float_format flt_fmt =
oct_mach_info::native)
: octave_base_strstream (arg_md, flt_fmt) { }
~octave_ostrstream (void) { }
// Return non-zero if EOF has been reached on this stream.
bool eof (void) const { return os.eof (); }
istream *input_stream (void) { return 0; }
ostream *output_stream (void) { return &os; }
char *str (void)
{
os << ends;
return os.str ();
}
streambuf *rdbuf (void) { return os ? os.rdbuf () : 0; }
bool bad (void) const { return os.bad (); }
void clear (void) { os.clear (); }
private:
ostrstream os;
// No copying!
octave_ostrstream (const octave_ostrstream&);
octave_ostrstream& operator = (const octave_ostrstream&);
};
#endif
/*
;;; Local Variables: ***
;;; mode: C++ ***
;;; End: ***
*/