Parsing query string from cgi

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1

Im having trouble getting the string I get from a cgi form to only be the value entered. I need to use that value as an argument but cant use it in the way it is returned. I get "bustype = restaurant" but I want just "restaurant" because i am going to be using that value as an argument in a csh file to display a table from mysql. I know it should be simple but I cant get it to work. Thanks.

2

how do you get the string to come up? is it like "grep bustype somefile" or something like that?

3

Do something like this if using POST

# process POST key / value pairs
read( STDIN, $query_string, $ENV{ 'CONTENT_LENGTH' });

@key_value_pairs = split ( /&/, $query_string );
  foreach $key_value ( @key_value_pairs ) {
    ( $key, $value ) = split ( /=/, $key_value );
    $value =~ tr/+/ /;
    $value =~ s/%([\dA-Fa-f][\dA-Fa-f])/pack ("C", hex ( $1 ) )/eg;
    $FORM{ $key } = $value;
}

Then you can access the elements, e.g.
$FORM{ 'foo' }
would correspond to the form control with name="foo" in it's tag in your html page.

Cheers
ZB

4

For Perl, extracting a query parameter does not need to be verbose as that.

use CGI;
$cgi = new CGI();
$bustype = $cgi->param('bustype');

For csh CGI script, I can't help as I don't use it.