libs-base/Source/Stream.m
mccallum 42d8d67632 ([Stream -flushStream]): Do nothing, instead of calling
-subclassResponsibility.
([Stream -closeStream]): Likewise.
([Stream -isClosed]): New method, return NO.


git-svn-id: svn+ssh://svn.gna.org/svn/gnustep/libs/base/trunk@811 72102866-910b-0410-8b05-ffd578937521
1996-01-25 15:14:32 +00:00

154 lines
2.9 KiB
Objective-C

/* Implementation of GNU Objective C byte stream
Copyright (C) 1994, 1995, 1996 Free Software Foundation, Inc.
Written by: R. Andrew McCallum <mccallum@gnu.ai.mit.edu>
Created: July 1994
This file is part of the GNU Objective C Class Library.
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.
*/
#include <objects/stdobjects.h>
#include <objects/Stream.h>
#include <objects/Coder.h>
#include <objects/Coder.h>
#include <objects/NSString.h>
@implementation Stream
/* This is the designated initializer. */
- init
{
return [super init];
}
- (int) writeByte: (unsigned char)b
{
return [self writeBytes:&b length:1];
}
- (int) readByte: (unsigned char*)b
{
return [self readBytes:b length:1];
}
- (int) writeBytes: (const void*)b length: (int)l
{
[self subclassResponsibility:_cmd];
return 0;
}
- (int) readBytes: (void*)b length: (int)l
{
[self subclassResponsibility:_cmd];
return 0;
}
- (int) writeFormat: (id <String>)format
arguments: (va_list)arg
{
[self subclassResponsibility:_cmd];
return 0;
}
- (int) writeFormat: (id <String>)format, ...
{
[self subclassResponsibility:_cmd];
return 0;
}
- (int) readFormat: (id <String>)format
arguments: (va_list)arg
{
[self subclassResponsibility:_cmd];
return 0;
}
- (int) readFormat: (id <String>)format, ...
{
[self subclassResponsibility:_cmd];
return 0;
}
- (void) writeLine: (id <String>)l
{
const char *s = [l cStringNoCopy];
[self writeBytes:s length:strlen(s)];
[self writeBytes:"\n" length:1];
}
- (id <String>) readLine
{
char *l;
[self readFormat: @"%a[^\n]\n", &l];
return [NSString stringWithCStringNoCopy:l];
}
- (void) flushStream
{
/* Do nothing. */
}
- (void) closeStream
{
/* Do nothing. */
}
- (BOOL) isClosed
{
return NO;
}
- (void) setStreamPosition: (unsigned)i
{
[self subclassResponsibility:_cmd];
}
- (void) rewindStream
{
[self setStreamPosition:0];
}
- (unsigned) streamPosition
{
[self subclassResponsibility:_cmd];
return 0;
}
- (BOOL) isAtEof
{
[self subclassResponsibility:_cmd];
return YES;
}
- (BOOL) isWritable
{
[self subclassResponsibility:_cmd];
return NO;
}
- (void) encodeWithCoder: anEncoder
{
[self subclassResponsibility:_cmd];
}
- initWithCoder: aDecoder
{
[self subclassResponsibility:_cmd];
return self;
}
@end