I've got what might be a naive question - but here goes:
I am working on a web-based database system, and am working
hard to make sure that any entries into the database are going
to work - not create errors. At this point, I've taken care
of all of the DB entry errors - wrong type, etc. There is one problem left:
One of the things I'm doing is passing some of the data
through a regex for a test. If the data in the field has
some characters (like a square bracket) the script will
barf (saying stuff like "unmatched brackets in regex"), and cause an ungraceful error. It's going to be quite unusual
that someone does this, but I want to take care of any situation.
So - what's the best way to go about this? I thought about
escaping particular characters on the way in, using tr like:
$val =~ tr/\[/\\\[/g;
etc. But this seems really clunky. Other suggestions? I guess my general
question is how do I exit gracefully from
perl errors
caused by data input?
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