142 lines
4.2 KiB
C
142 lines
4.2 KiB
C
/* Implement Input/Output runtime actions for CHILL.
|
|
Copyright (C) 1992,1993 Free Software Foundation, Inc.
|
|
Author: Wilfried Moser, et al
|
|
|
|
This file is part of GNU CC.
|
|
|
|
GNU CC is free software; you can redistribute it and/or modify
|
|
it under the terms of the GNU General Public License as published by
|
|
the Free Software Foundation; either version 2, or (at your option)
|
|
any later version.
|
|
|
|
GNU CC 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 General Public License for more details.
|
|
|
|
You should have received a copy of the GNU General Public License
|
|
along with GNU CC; see the file COPYING. If not, write to
|
|
the Free Software Foundation, 59 Temple Place - Suite 330,
|
|
Boston, MA 02111-1307, USA. */
|
|
|
|
/* As a special exception, if you link this library with other files,
|
|
some of which are compiled with GCC, to produce an executable,
|
|
this library does not by itself cause the resulting executable
|
|
to be covered by the GNU General Public License.
|
|
This exception does not however invalidate any other reasons why
|
|
the executable file might be covered by the GNU General Public License. */
|
|
|
|
#include <setjmp.h>
|
|
#include <errno.h>
|
|
#include <string.h>
|
|
#include <unistd.h>
|
|
#include <sys/types.h>
|
|
|
|
#include "fileio.h"
|
|
|
|
static
|
|
void
|
|
doWrite( Access_Mode* the_access, void* buf, size_t nbyte )
|
|
{
|
|
size_t nwrit;
|
|
|
|
nwrit = write( the_access->association->handle, buf, nbyte );
|
|
|
|
if( nwrit < nbyte )
|
|
{
|
|
the_access->association->syserrno = errno;
|
|
RWEXCEPTION( WRITEFAIL, OS_IO_ERROR );
|
|
}
|
|
}
|
|
|
|
|
|
void
|
|
__writerecord( Access_Mode* the_access,
|
|
signed long the_index,
|
|
char* the_val_addr,
|
|
unsigned long the_val_len,
|
|
char* file,
|
|
int line )
|
|
|
|
{
|
|
Association_Mode* the_assoc;
|
|
unsigned long info;
|
|
char* actaddr;
|
|
unsigned short actlen;
|
|
off_t filepos;
|
|
|
|
if( !the_access )
|
|
CHILLEXCEPTION( file, line, EMPTY, NULL_ACCESS );
|
|
|
|
if( !(the_assoc = the_access->association) )
|
|
CHILLEXCEPTION( file, line, NOTCONNECTED, IS_NOT_CONNECTED );
|
|
|
|
/* Usage must no be ReadOnly */
|
|
if( the_assoc->usage == ReadOnly )
|
|
CHILLEXCEPTION( file, line, WRITEFAIL, BAD_USAGE );
|
|
|
|
/*
|
|
* Positioning
|
|
*/
|
|
if( TEST_FLAG( the_access, IO_INDEXED ) )
|
|
{
|
|
/* index expression must be within bounds of index mode */
|
|
if( the_index < the_access->lowindex
|
|
|| the_access->highindex < the_index )
|
|
CHILLEXCEPTION( file, line, RANGEFAIL, BAD_INDEX );
|
|
filepos = the_access->base +
|
|
(the_index - the_access->lowindex) * the_access->reclength;
|
|
|
|
if( lseek( the_assoc->handle, filepos, SEEK_SET ) == -1L )
|
|
CHILLEXCEPTION( file, line, WRITEFAIL, LSEEK_FAILS );
|
|
}
|
|
|
|
if( (info = setjmp( __rw_exception )) )
|
|
CHILLEXCEPTION( file, line, info>>16, info & 0xffff );
|
|
|
|
if( TEST_FLAG( the_access, IO_TEXTIO ) )
|
|
{
|
|
if( TEST_FLAG( the_access, IO_INDEXED ) )
|
|
{
|
|
int nspace = the_access->reclength - the_val_len;
|
|
memset( the_val_addr + 2 + the_val_len, ' ', nspace );
|
|
actlen = the_access->reclength - 2;
|
|
MOV2(the_val_addr,&actlen);
|
|
doWrite( the_access, the_val_addr, the_access->reclength );
|
|
}
|
|
else
|
|
{
|
|
if( the_assoc->ctl_pre )
|
|
write( the_assoc->handle, &the_assoc->ctl_pre, 1 );
|
|
MOV2(&actlen,the_val_addr);
|
|
write( the_assoc->handle, the_val_addr + 2, actlen );
|
|
if( the_assoc->ctl_post )
|
|
write( the_assoc->handle, &the_assoc->ctl_post, 1 );
|
|
the_assoc->ctl_pre = '\0';
|
|
the_assoc->ctl_post = '\n';
|
|
}
|
|
}
|
|
else
|
|
{
|
|
switch( the_access->rectype )
|
|
{
|
|
case Fixed:
|
|
if( TEST_FLAG( the_assoc, IO_VARIABLE ) )
|
|
{
|
|
actlen = the_access->reclength;
|
|
doWrite( the_access, &actlen, sizeof(actlen) );
|
|
}
|
|
doWrite( the_access, the_val_addr, the_val_len );
|
|
break;
|
|
case VaryingChars:
|
|
MOV2(&actlen,the_val_addr);
|
|
if( actlen > the_access->reclength - 2 )
|
|
CHILLEXCEPTION( file, line, RANGEFAIL, RECORD_TOO_LONG );
|
|
actlen = TEST_FLAG( the_access, IO_INDEXED )
|
|
? the_access->reclength : actlen + 2;
|
|
doWrite( the_access, the_val_addr, actlen );
|
|
break;
|
|
}
|
|
}
|
|
}
|