/usr/include/GNUstep/NGStreams/NGFilterStream.h is in libsope-dev 2.2.17-1build2.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
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Copyright (C) 2000-2005 SKYRIX Software AG
This file is part of SOPE.
SOPE is free software; you can redistribute it and/or modify it under
the terms of the GNU Lesser General Public License as published by the
Free Software Foundation; either version 2, or (at your option) any
later version.
SOPE 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 Lesser General Public
License for more details.
You should have received a copy of the GNU Lesser General Public
License along with SOPE; see the file COPYING. If not, write to the
Free Software Foundation, 59 Temple Place - Suite 330, Boston, MA
02111-1307, USA.
*/
#ifndef __NGStreams_NGFilterStream_H__
#define __NGStreams_NGFilterStream_H__
#include <NGStreams/NGStream.h>
/*
NGFilterStream
This is an abstract superclass for streams which just operate on 'basic'
streams like sockets or file streams. As an example subclass take the
buffered stream which performs buffered IO on any given stream.
*/
@interface NGFilterStream : NGStream
{
@protected
id source;
NGIOReadMethodType readBytes;
NGIOWriteMethodType writeBytes;
}
+ (id)filterWithInputSource:(id<NGInputStream>)_source;
+ (id)filterWithOutputSource:(id<NGOutputStream>)_source;
+ (id)filterWithSource:(id<NGStream>)_source;
- (id)initWithInputSource:(id<NGInputStream>)_source;
- (id)initWithOutputSource:(id<NGOutputStream>)_source;
- (id)initWithSource:(id<NGStream>)_source;
/* accessors */
- (id<NGInputStream>)inputStream;
- (id<NGOutputStream>)outputStream;
- (id<NGStream>)source;
/* primitives */
- (unsigned)readBytes:(void *)_buf count:(unsigned)_len;
- (unsigned)writeBytes:(const void *)_buf count:(unsigned)_len;
- (BOOL)flush;
- (BOOL)close;
- (NGStreamMode)mode;
- (BOOL)isRootStream;
@end
#endif /* __NGStreams_NGFilterStream_H__ */
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