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Simon,
Thanks for your response. Below are displays from my program, the length is
specified as 200 bytes.
LENGTH=000000200
Data read from file:DATE: 060518 TIME: 081530
ZZZZZZZZZZ
IFS-FWRITE
LENGTH=000000200
Buffer before write:DATE: 060518 TIME: 081530 xxxxxxxx
ZZZZZZZZZZ
Data written to file:DATE: 060518 TIME: 081530 xxxxxxxx
ZZZZZZZZZZ
Length=000000200
RC=000000000J
5900 - DLTF FILE(ZZZWORK/JOPENSF3)
More
Below is the code that was used to display the displays above. I did change
the first parm to be 'by reference' instead of by value. As you can see by the
results below, it is still writing garbage.
Currently, I will be R/W to byte-stream files. I have another question - is
there any benefit to maniputating these files in libraries? Does the files
origin have any impact over which API's I use? Thanks again for your help!
Adrienne
0107.30 DISPLAY 'IFS-FWRITE'.
0107.32 DISPLAY 'LENGTH=', LENGTH OF BUFFER.
0107.33 DISPLAY 'Buffer before write:' BUFFER.
0107.36
0107.37 CALL PROCEDURE '_C_IFS_fwrite'
0107.38 USING BY REFERENCE BUFFER,
0107.39 BY VALUE LENGTH OF BUFFER,
0107.40 BY VALUE FILE-PTR.
0107.41 * CALL PROCEDURE '_C_IFS_fwrite'
0107.42 * USING BY VALUE ADDRESS OF BUFFER,
Results of write in file:
2006050514265300002536 LOG CLOSE F530-LOG LOG01.FILE
ÄÁãÅz@ðöðõñø@ãÉÔÅz@ðøòðñö@§§§§§§§§@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@
ÿÿÿÿ
ÿÿÿÿ
E¸K 0 E¸K 8 E¸K @ E¸K H
E¸K P E¸K X E¸K ` E¸K
E¸K " E¸K " E¸K " E¸K "0
E¸K "@ E¸K "H E¸K " E¸K "
-----Original Message-----
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Today's Topics:
1. Re: write API for COBOL - end of record? (Simon Coulter)
----------------------------------------------------------------------
message: 1
date: Wed, 17 May 2006 09:04:45 +1000
from: Simon Coulter <shc@xxxxxxxxxxxxxxxxx>
subject: Re: [COBOL400-L] write API for COBOL - end of record?
On 17/05/2006, at 12:55 AM, Adrienne McConnon wrote:
> I have a question regarding the 'write' API. Is there an end of
> record marker that needs to be set when writing to an existing stream
> file?
No. You specify the length of the data to write. This should be the exact
length of the data rather than the length of the variable containing the data.
> I have tried CALL PROCEDURE
> '_C_IFS_fwrite' and CALL PROCEDURE 'WRITE' with no good results
>
> The 1st 2 lines below represent the last 2 lines in an existing stream
> file. The next line contains some display data and mostly garbage.
> but it should have written a 200 byte record.
The data you show indicates that you wrote whatever junk just happened to be in
storage. How are you invoking 'write' and what do you pass to it?
write (in all its forms) expects the address of the data and the length of the
data plus a file descriptor all of which should be passed by VALUE. For example:
CALL PROCEDURE "write" USING BY VALUE FD
BY VALUE ADDRESS OF
DATA
BY VALUE DATA-LEN
RETURNING RC
Note that passing a pointer by VALUE is exactly the same as passing a variable
by REFERENCE so if your data fits within the limits of a COBOL variable you can
also do:
CALL PROCEDURE "write" USING BY VALUE FD
BY REFERENCE DATA
BY VALUE DATA-LEN
RETURNING RC
Regards,
Simon Coulter.
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