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git-svn-id: file:///Users/olsen/Code/migration-svn-zu-git/logical-line-staging/clib2/trunk@14685 87f5fb63-7c3d-0410-a384-fd976d0f7a62
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Olaf Barthel
2004-07-26 16:36:55 +00:00
parent a9e8f137ad
commit 91bcdea2a2
669 changed files with 80825 additions and 0 deletions
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library/stdio_filliobreadbuffer.c Normal file
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/*
* $Id: stdio_filliobreadbuffer.c,v 1.1.1.1 2004-07-26 16:31:29 obarthel Exp $
*
* :ts=4
*
* Portable ISO 'C' (1994) runtime library for the Amiga computer
* Copyright (c) 2002-2004 by Olaf Barthel <olsen@sourcery.han.de>
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
*
* - Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
*
* - Neither the name of Olaf Barthel nor the names of contributors
* may be used to endorse or promote products derived from this
* software without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
* AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE
* LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
* CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
* POSSIBILITY OF SUCH DAMAGE.
*/
#ifndef _STDIO_HEADERS_H
#include "stdio_headers.h"
#endif /* _STDIO_HEADERS_H */
/****************************************************************************/
/*
int
__iob_read_buffer_is_empty(struct iob * file)
{
int result;
assert( file != NULL );
result = (file->iob_BufferReadBytes == 0 || file->iob_BufferPosition == file->iob_BufferReadBytes);
return(result);
}
*/
/****************************************************************************/
int
__fill_iob_read_buffer(struct iob * file)
{
DECLARE_UTILITYBASE();
struct file_hook_message message;
int result = -1;
ENTER();
SHOWPOINTER(file);
assert( FLAG_IS_SET(file->iob_Flags,IOBF_IN_USE) );
assert( file != NULL && (file->iob_BufferReadBytes == 0 || file->iob_BufferPosition == file->iob_BufferReadBytes) && file->iob_BufferWriteBytes == 0 );
assert( FLAG_IS_SET(file->iob_Flags,IOBF_READ) );
assert( file->iob_BufferSize > 0 );
assert( UtilityBase != NULL );
if(__check_abort_enabled)
__check_abort();
if(FLAG_IS_CLEAR(file->iob_Flags,IOBF_IN_USE)) /* ZZZ this does not really belong here; paranoia? */
goto out;
/* Flush all line buffered streams before we proceed to fill this buffer. */
if((file->iob_Flags & IOBF_BUFFER_MODE) == IOBF_BUFFER_MODE_LINE)
{
int i;
for(i = 0 ; i < __num_iob ; i++)
{
if(__iob[i] != NULL &&
FLAG_IS_SET(__iob[i]->iob_Flags,IOBF_IN_USE) &&
FLAG_IS_SET(__iob[i]->iob_Flags,IOBF_WRITE) &&
(__iob[i]->iob_Flags & IOBF_BUFFER_MODE) == IOBF_BUFFER_MODE_LINE &&
__iob_write_buffer_is_valid(__iob[i]))
{
if(__flush_iob_write_buffer(__iob[i]) < 0)
goto out;
}
}
}
SHOWMSG("calling the hook");
SHOWPOINTER(file->iob_Buffer);
SHOWVALUE(file->iob_BufferSize);
message.action = file_hook_action_read;
message.data = file->iob_Buffer;
message.size = file->iob_BufferSize;
message.result = 0;
assert( file->iob_Hook != NULL );
CallHookPkt(file->iob_Hook,file,&message);
if(message.result < 0)
{
errno = message.error;
D(("got error %ld",errno));
SET_FLAG(file->iob_Flags,IOBF_ERROR);
goto out;
}
file->iob_BufferReadBytes = message.result;
file->iob_BufferPosition = 0;
SHOWVALUE(file->iob_BufferReadBytes);
result = 0;
out:
RETURN(result);
return(result);
}