Re: "Validate" file name via regex pattern in CL?

On 3/6/2018 12:13 PM, Dan wrote:

An outside system sends files to ours that my program finds in the IFS.
The name of the file sent to us must fit the pattern of:
Saleseforce_Master_mm.dd.yy_hhmm.csv
where "mm.dd.yy_hhmm" is the creation timestramp.

If the file name doesn't fit this pattern, it is "rejected" and an email is
sent to the creator of the file indicating the problem.

Since this is fixed length and the only variable is the value of the
timestamp, I'm wondering if it would be overkill to test with regex as
opposed to substringing the timestamp elements and testing those values.

I don't know how I'd do a regex in CL, but generally I wouldn't apply a
regex to columnar data. Personal preference.

As for the implementation of this, I'd write it as a command that just
drops into your existing CL processing (assuming that's why you want a
CL solution). You can test a command very easily outside of the CLP
where it's used, you can put all kind of error handling into whatever
language you eventually use to do the processing, and it's not at all
disruptive to the existing code. Another personal preference.