1 /* Implement Input/Output runtime actions for CHILL.
2 Copyright (C) 1992,1993 Free Software Foundation, Inc.
3 Author: Wilfried Moser, et al
5 This file is part of GNU CC.
7 GNU CC is free software; you can redistribute it and/or modify
8 it under the terms of the GNU General Public License as published by
9 the Free Software Foundation; either version 2, or (at your option)
12 GNU CC is distributed in the hope that it will be useful,
13 but WITHOUT ANY WARRANTY; without even the implied warranty of
14 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
15 GNU General Public License for more details.
17 You should have received a copy of the GNU General Public License
18 along with GNU CC; see the file COPYING. If not, write to
19 the Free Software Foundation, 675 Mass Ave, Cambridge, MA 02139, USA. */
21 /* As a special exception, if you link this library with other files,
22 some of which are compiled with GCC, to produce an executable,
23 this library does not by itself cause the resulting executable
24 to be covered by the GNU General Public License.
25 This exception does not however invalidate any other reasons why
26 the executable file might be covered by the GNU General Public License. */
32 #include <sys/types.h>
38 doWrite( Access_Mode
* the_access
, void* buf
, size_t nbyte
)
42 nwrit
= write( the_access
->association
->handle
, buf
, nbyte
);
46 the_access
->association
->syserrno
= errno
;
47 RWEXCEPTION( WRITEFAIL
, OS_IO_ERROR
);
53 __writerecord( Access_Mode
* the_access
,
54 signed long the_index
,
56 unsigned long the_val_len
,
61 Association_Mode
* the_assoc
;
64 unsigned short actlen
;
68 CHILLEXCEPTION( file
, line
, EMPTY
, NULL_ACCESS
);
70 if( !(the_assoc
= the_access
->association
) )
71 CHILLEXCEPTION( file
, line
, NOTCONNECTED
, IS_NOT_CONNECTED
);
73 /* Usage must no be ReadOnly */
74 if( the_assoc
->usage
== ReadOnly
)
75 CHILLEXCEPTION( file
, line
, WRITEFAIL
, BAD_USAGE
);
80 if( TEST_FLAG( the_access
, IO_INDEXED
) )
82 /* index expression must be within bounds of index mode */
83 if( the_index
< the_access
->lowindex
84 || the_access
->highindex
< the_index
)
85 CHILLEXCEPTION( file
, line
, RANGEFAIL
, BAD_INDEX
);
86 filepos
= the_access
->base
+
87 (the_index
- the_access
->lowindex
) * the_access
->reclength
;
89 if( lseek( the_assoc
->handle
, filepos
, SEEK_SET
) == -1L )
90 CHILLEXCEPTION( file
, line
, WRITEFAIL
, LSEEK_FAILS
);
93 if( (info
= setjmp( __rw_exception
)) )
94 CHILLEXCEPTION( file
, line
, info
>>16, info
& 0xffff );
96 if( TEST_FLAG( the_access
, IO_TEXTIO
) )
98 if( TEST_FLAG( the_access
, IO_INDEXED
) )
100 int nspace
= the_access
->reclength
- the_val_len
;
101 memset( the_val_addr
+ 2 + the_val_len
, ' ', nspace
);
102 actlen
= the_access
->reclength
- 2;
103 MOV2(the_val_addr
,&actlen
);
104 doWrite( the_access
, the_val_addr
, the_access
->reclength
);
108 if( the_assoc
->ctl_pre
)
109 write( the_assoc
->handle
, &the_assoc
->ctl_pre
, 1 );
110 MOV2(&actlen
,the_val_addr
);
111 write( the_assoc
->handle
, the_val_addr
+ 2, actlen
);
112 if( the_assoc
->ctl_post
)
113 write( the_assoc
->handle
, &the_assoc
->ctl_post
, 1 );
114 the_assoc
->ctl_pre
= '\0';
115 the_assoc
->ctl_post
= '\n';
120 switch( the_access
->rectype
)
123 if( TEST_FLAG( the_assoc
, IO_VARIABLE
) )
125 actlen
= the_access
->reclength
;
126 doWrite( the_access
, &actlen
, sizeof(actlen
) );
128 doWrite( the_access
, the_val_addr
, the_val_len
);
131 MOV2(&actlen
,the_val_addr
);
132 if( actlen
> the_access
->reclength
- 2 )
133 CHILLEXCEPTION( file
, line
, RANGEFAIL
, RECORD_TOO_LONG
);
134 actlen
= TEST_FLAG( the_access
, IO_INDEXED
)
135 ? the_access
->reclength
: actlen
+ 2;
136 doWrite( the_access
, the_val_addr
, actlen
);