Good for you for thinking ahead! (I test software for a living, we appreciate people who write good error handling.)

The sort-of-classical way to to do this is:

Make sure each subroutine (or object) returns a particular code depending on whether it completed properly or had a particular error.
Check the completion code in the main body of the program as each sub or object completes its work. If it is an error code, call the error-handling sub or object.
In the error-handling routine, re-use as many error codes as possible: for instance, error 42 could be "file $var not found". The error handling code would report "file critical.file not found in subroutine foo." or something like that.

Note that I believe Perl will do a lot of this for you, if you check for exceptions at sane places in the code.

If you get a first pass at error-handling, I'd like to encourage you to post it here, because I'd like to see what you come up with.

In reply to Re: How to handle Errors? by McMahon
in thread How to handle Errors? by Scarborough

Title:
Use:  <p> text here (a paragraph) </p>
and:  <code> code here </code>
to format your post, it's "PerlMonks-approved HTML":


  • Posts are HTML formatted. Put <p> </p> tags around your paragraphs. Put <code> </code> tags around your code and data!
  • Titles consisting of a single word are discouraged, and in most cases are disallowed outright.
  • Read Where should I post X? if you're not absolutely sure you're posting in the right place.
  • Please read these before you post! —
  • Posts may use any of the Perl Monks Approved HTML tags:
    a, abbr, b, big, blockquote, br, caption, center, col, colgroup, dd, del, details, div, dl, dt, em, font, h1, h2, h3, h4, h5, h6, hr, i, ins, li, ol, p, pre, readmore, small, span, spoiler, strike, strong, sub, summary, sup, table, tbody, td, tfoot, th, thead, tr, tt, u, ul, wbr
  • You may need to use entities for some characters, as follows. (Exception: Within code tags, you can put the characters literally.)
            For:     Use:
    & &amp;
    < &lt;
    > &gt;
    [ &#91;
    ] &#93;
  • Link using PerlMonks shortcuts! What shortcuts can I use for linking?
  • See Writeup Formatting Tips and other pages linked from there for more info.