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/*
* CSByteStreamHandle.m
*
* Copyright (c) 2017-present, MacPaw Inc. All rights reserved.
*
* This library 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 2.1 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
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with this library; if not, write to the Free Software
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston,
* MA 02110-1301 USA
*/
#import "CSByteStreamHandle.h"
NSString *CSByteStreamEOFReachedException=@"CSByteStreamEOFReachedException";
@implementation CSByteStreamHandle
/*-(id)initWithName:(NSString *)descname length:(off_t)length
{
if(self=[super initWithName:descname length:length])
{
bytestreamproducebyte_ptr=(uint8_t (*)(id,SEL,off_t))[self methodForSelector:@selector(produceByteAtOffset:)];
}
return self;
}*/
-(id)initWithInputBufferForHandle:(CSHandle *)handle length:(off_t)length bufferSize:(int)buffersize;
{
if(self=[super initWithInputBufferForHandle:handle length:length bufferSize:buffersize])
{
bytestreamproducebyte_ptr=(uint8_t (*)(id,SEL,off_t))[self methodForSelector:@selector(produceByteAtOffset:)];
}
return self;
}
-(id)initAsCopyOf:(CSByteStreamHandle *)other
{
[self _raiseNotSupported:_cmd];
return nil;
}
-(int)streamAtMost:(int)num toBuffer:(void *)buffer
{
bytesproduced=0;
if(setjmp(eofenv)==0)
{
while(bytesproduced<num)
{
uint8_t byte=bytestreamproducebyte_ptr(self,@selector(produceByteAtOffset:),streampos+bytesproduced);
((uint8_t *)buffer)[bytesproduced++]=byte;
if(endofstream) break;
}
}
else
{
[self endStream];
}
return bytesproduced;
}
-(void)resetStream
{
[self resetByteStream];
}
-(void)resetByteStream {}
-(uint8_t)produceByteAtOffset:(off_t)pos { return 0; }
-(void)endByteStream { [self endStream]; }
@end
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