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60 lines
2.2 KiB
C++
60 lines
2.2 KiB
C++
/* This is part of libio/iostream, providing -*- C++ -*- input/output.
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Copyright (C) 1993 Free Software Foundation
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This file is part of the GNU IO Library. This library is free
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software; you can redistribute it and/or modify it under the
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terms of the GNU General Public License as published by the
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Free Software Foundation; either version 2, or (at your option)
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any later version.
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This library is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with this library; see the file COPYING. If not, write to the Free
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Software Foundation, 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
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As a special exception, if you link this library with files
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compiled with a GNU compiler to produce an executable, this does not cause
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the resulting executable to be covered by the GNU General Public License.
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This exception does not however invalidate any other reasons why
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the executable file might be covered by the GNU General Public License. */
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/* Written by Per Bothner (bothner@cygnus.com). */
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#ifndef _PFSTREAM_H
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#define _PFSTREAM_H
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#ifdef __GNUG__
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#pragma interface
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#endif
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#include <fstream.h>
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extern "C++" {
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// ipfstream foo("NAME") is like: ifstream foo("NAME"). However,
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// if NAME starts *or ends* with a '|', the remainder of NAME is
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// evaluated as a shell command (using a procbuf), and all input
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// read from foo is whatever that shell writes to its standard output.
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// E.g. ipfstream foo("|zcat foo.Z") or ipfstream foo("zcat foo.Z|")
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// (These two forms are equivalent.)
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class ipfstream : public ifstream {
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public:
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ipfstream(const char *name, int mode=ios::in, int prot=0664);
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};
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// opfstream foo("NAME") is like: ofstream foo("NAME").
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// However, if NAME starts with a '|', the remainder of NAME is
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// evaluated as a shell command (using a procbuf), and all output
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// written to foo is piped to the standard input of that shell.
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// E.g. opfstream foo("|more");
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class opfstream : public ofstream {
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public:
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opfstream(const char *name, int mode=ios::out, int prot=0664);
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};
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} // extern "C++"
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#endif /*!_PFSTREAM_H*/
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