Re: IFS File Update

On Tue, 2014-09-02 at 10:55 -0500, Bradley Stone wrote:

The problem with doing a "simple" replace is that:

1. You may have the data in more than one place to replace
2. You need to make sure you're only replacing data inside of tags (ie,
what if the data string happens to match part of a container tag?)

You could "limit" the possibility of other matching strings by including
the tags "<thistag>ABC</thistag>" in the matching/replacement strings,
the only place this would then fall down would be if the tags/data could
be part of multiple sub-grouped tags/data (not sure the actual technical
term) when only one requires changing.

I'm not sure XML was meant to be used to store data and to manipulate it at
a later date. I'd say if the data the XML was built from changes, then
change the data and entirely rebuild the XML. But trying to scan and
replace data in an XML could be futile.

Brad
www.bvstools.com


On Tue, Sep 2, 2014 at 10:49 AM, Michael Ryan <michaelrtr@xxxxxxxxx> wrote:

The XML file would have something like this:

<tag>ABC</tag>

And I would want to replace ABC with XYZ.

I may also have this:

<tag>DEFG</tag>

And I would want to replace DEFG with WXYZ.

So the source and target strings would always be the same size.


On Tue, Sep 2, 2014 at 11:34 AM, Michael Ryan <michaelrtr@xxxxxxxxx>
wrote:

I'd be looking for a certain pattern in the file. It's an XML file, and I
need to change certain information in it, but still keep the file format.


On Tue, Sep 2, 2014 at 11:29 AM, Bradley Stone <bvstone@xxxxxxxxx>

wrote:

How is the file being updated? Is there a user interface (ie web page

or

screen) involved? What type of data is it?

My question I guess is, how would you know what and where to update in

the

file?

Brad
www.bvstools.com


On Tue, Sep 2, 2014 at 10:25 AM, Scott Klement <

rpg400-l@xxxxxxxxxxxxxxxx

wrote:

You can position to a particular byte of your file using the lseek()

API

Once positioned, the write() API will overwrite bytes at that position
(for the length specified on the call to write API)

Is that what you're asking? {There weren't actually any questions in

your

post.)



On 9/2/2014 10:02 AM, Michael Ryan wrote:

I need to update data in a stream file located in ths IFS (or on a

QNTC

share). I know I can read the data from the file, and then write to
another
file, and then delete/rename I guess, but I want to update in place.

I

don't want to use any procedures that add a CRLF. I'm thinking of

using

read() and write(), but I'm not sure how to handle the update.

Probably

pretty simple. Thanks!

--
This is the RPG programming on the IBM i (AS/400 and iSeries)

(RPG400-L)

mailing list
To post a message email: RPG400-L@xxxxxxxxxxxx
To subscribe, unsubscribe, or change list options,
visit: http://lists.midrange.com/mailman/listinfo/rpg400-l
or email: RPG400-L-request@xxxxxxxxxxxx
Before posting, please take a moment to review the archives
at http://archive.midrange.com/rpg400-l.

--
This is the RPG programming on the IBM i (AS/400 and iSeries) (RPG400-L)
mailing list
To post a message email: RPG400-L@xxxxxxxxxxxx
To subscribe, unsubscribe, or change list options,
visit: http://lists.midrange.com/mailman/listinfo/rpg400-l
or email: RPG400-L-request@xxxxxxxxxxxx
Before posting, please take a moment to review the archives
at http://archive.midrange.com/rpg400-l.

--
This is the RPG programming on the IBM i (AS/400 and iSeries) (RPG400-L)
mailing list
To post a message email: RPG400-L@xxxxxxxxxxxx
To subscribe, unsubscribe, or change list options,
visit: http://lists.midrange.com/mailman/listinfo/rpg400-l
or email: RPG400-L-request@xxxxxxxxxxxx
Before posting, please take a moment to review the archives
at http://archive.midrange.com/rpg400-l.