58 lines
2.2 KiB
C
58 lines
2.2 KiB
C
|
/* This is part of libio/iostream, providing -*- C++ -*- input/output.
|
||
|
|
Copyright (C) 1993 Free Software Foundation
|
||
|
|
|
||
|
|
This file is part of the GNU IO Library. This library 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.
|
||
|
|
|
||
|
|
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 General Public License for more details.
|
||
|
|
|
||
|
|
You should have received a copy of the GNU General Public License
|
||
|
|
along with GNU CC; see the file COPYING. If not, write to
|
||
|
|
the Free Software Foundation, 675 Mass Ave, Cambridge, MA 02139, USA.
|
||
|
|
|
||
|
|
As a special exception, if you link this library with files
|
||
|
|
compiled with a GNU compiler to produce an executable, this does not cause
|
||
|
|
the resulting executable to be covered by the GNU General Public License.
|
||
|
|
This exception does not however invalidate any other reasons why
|
||
|
|
the executable file might be covered by the GNU General Public License. */
|
||
|
|
|
||
|
|
/* Written by Per Bothner (bothner@cygnus.com). */
|
||
|
|
|
||
|
|
#ifndef _PFSTREAM_H
|
||
|
|
#define _PFSTREAM_H
|
||
|
|
#ifdef __GNUG__
|
||
|
|
#pragma interface
|
||
|
|
#endif
|
||
|
|
#include <fstream.h>
|
||
|
|
|
||
|
|
// ipfstream foo("NAME") is like: ifstream foo("NAME"). However,
|
||
|
|
// if NAME starts *or ends* with a '|', the remainder of NAME is
|
||
|
|
// evaluated as a shell command (using a procbuf), and all input
|
||
|
|
// read from foo is whatever that shell writes to its standard output.
|
||
|
|
// E.g. ipfstream foo("|zcat foo.Z") or ipfstream foo("zcat foo.Z|")
|
||
|
|
// (These two forms are equivalent.)
|
||
|
|
|
||
|
|
class ipfstream : public ifstream {
|
||
|
|
public:
|
||
|
|
ipfstream(const char *name, int mode=ios::in, int prot=0664);
|
||
|
|
};
|
||
|
|
|
||
|
|
// opfstream foo("NAME") is like: ofstream foo("NAME").
|
||
|
|
// However, if NAME starts with a '|', the remainder of NAME is
|
||
|
|
// evaluated as a shell command (using a procbuf), and all output
|
||
|
|
// written to foo is piped to the standard input of that shell.
|
||
|
|
// E.g. opfstream foo("|more");
|
||
|
|
|
||
|
|
class opfstream : public ofstream {
|
||
|
|
public:
|
||
|
|
opfstream(const char *name, int mode=ios::out, int prot=0664);
|
||
|
|
};
|
||
|
|
#endif /*!_PFSTREAM_H*/
|
||
|
|
|