"obligatory"--how about calling it "required" instead? "min", "max,"--minimum and maximum what? How about "minlength" and "maxlength" instead? Another thing I'd recommend is, Instead of having a "regex" parameter you just have a catch-all "value" parameter that can contain a string, a number, or a compiled regex that you compare the actual parameter value with. To distinguish between them, remember that any string containing a regex compiled with the qr// operator has a ref type of "Regexp," e.g., this:

my $re = qr/some(thing)?/;
print ref $re;

[download]

Prints out "Regexp". No, this behavior is NOT documented (at least that I can find), but it's quite useful. So you can do something like this:

my $matches;
if (ref $value eq 'Regexp')
{
    $matches++ if ($param_value =~ $value);
}
else
{
    $matches++ if ($param_value eq $value);
}

[download]

Which compares the parameter value in $param_value against the regex in $value if $value if it contains a compiled regex, or it just compares the string or number in $value against the parameter value in $param_value otherwise.

In reply to Re: Check user input - reimplementation by William G. Davis
in thread Check user input - reimplementation by kiat

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