Re: c_ifs_open Problem

Art,

See:
    https://www.ibm.com/docs/en/i/7.1?topic=functions-fopen-open-files#fopen


Study that page carefully.

HTH,

Mark S. Waterbury

On Thursday, April 22, 2021, 6:57:03 PM EDT, Art Tostaine, Jr. <atostaine@xxxxxxxxx> wrote:

When I specify codepage=1208 the file opens but I get garbage in my
program. It's just the same message I posted on Simon's site.

The STMF CCSID is 1208. Shouldn't it convert when I Read the file?

On Thu, Apr 22, 2021 at 6:27 PM Art Tostaine, Jr. <atostaine@xxxxxxxxx>
wrote:

Thanks Alan.  The error is CPE3490, I'm going to try and specify the CCSID
on the open.

On Thu, Apr 22, 2021 at 5:43 PM Alan Campin <alan0307d@xxxxxxxxx> wrote:

Sorry, should be

dcl-pr OpenFile Pointer ExtProc('C_IFS_fopen');
  PR_FileName Pointer Options(*String) Value;
  PR_FileMode Pointer Options(*String) Value;
end-pr;

dcl-s FilePtr Pointer;

FilePtr = OpenFile('/tmp/wc/images/post_out.json':
                    'r');

On Thu, Apr 22, 2021 at 2:01 PM Alan Campin <alan0307d@xxxxxxxxx> wrote:

May I suggest.

dcl-pr OpenFile Pointer ExtProc('C_IFS_fopen');
  PR_FileName Char(256) Options(*String) Value;
  PR_FileMode Char(25) Options(*String) Value;
end-pr;

dcl-s FilePtr Pointer;

FilePtr = OpenFile('/tmp/wc/images/post_out.json':
                    'r');

Have not tested but should work.


On Thu, Apr 22, 2021 at 1:42 PM Art Tostaine, Jr. <atostaine@xxxxxxxxx>
wrote:

Hi Barbara:  This is from Simon's site where you posted a comment.

  dcl-pr OpenFile pointer extproc('_C_IFS_fopen') ;
    *n pointer value ;  //File name
    *n pointer value ;  //File mode
  end-pr ;

  PathFile = '/tmp/wc/images/post_out.json' + x'00' ;
  OpenMode = 'r' + x'00' ;
  FilePtr = OpenFile(%addr(PathFile):%addr(OpenMode)) ;

** Result is FilePtr = *null

https://www.rpgpgm.com/2016/03/a-better-way-to-read-file-in-ifs-with.html

On Thu, Apr 22, 2021 at 4:40 PM Barbara Morris <bmorris@xxxxxxxxxx>
wrote:

On 2021-04-22 1:51 p.m., Art Tostaine, Jr. wrote:

Debugging a program that stopped working recently.  I think this

code

was

copied from Simon, Liam also has a version.

PathFile = '/tmp/wc/images/post_out.json' + x'00' ;
OpenMode = 'r' + x'00' ;
FilePtr = OpenFile(%addr(PathFile):%addr(OpenMode)) ;

What is the prototype for OpenFile?

--
Barbara

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