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Full Discussion: Valid input compared with input
Top Forums Shell Programming and Scripting Valid input compared with input Post 302437533 by ckozler on Thursday 15th of July 2010 09:59:27 AM
Old 07-15-2010
Quote:
Originally Posted by durden_tyler
You have the @selections array. And you have the @valid_options array. What you want to do is - loop through @selections array, and use grep to check if the current element is present in @valid_options array. If it is, you have a valid option; otherwise not.

Code:
$
$
$ perl -le '@valid_options = qw(valid1 valid2); @selections = qw(valid1 valid2 valid3 valid4);
            for $i (@selections) {print "$i is ", grep(/$i/,@valid_options) ? "Valid!" : "Invalid!"}'
valid1 is Valid!
valid2 is Valid!
valid3 is Invalid!
valid4 is Invalid!
$
$

tyler_durden
Perfect! Thank you!

Code:
sub init {
        use Getopt::Long;
        use Data::Dumper;
        my @selections = ();
        my @supported_apps = ( "mysql", "tomcat" );
        GetOptions( "install=s" => \@selections );
        
        for my $i( @selections ) {
                my $supported = grep( /$i/, @supported_apps );
                if( $supported eq 0 ) {
                        _print( "$i is invalid.  Please input a supported application", 1 );
                        _showHelp();
                        exit;   
                }
        }
}

I know the variable names changed but the idea stays the same. I am writing a small perl installer script so I need to keep an organized list of applications I support for installation.


Thanks again!
 

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LEARN ABOUT DEBIAN

imager::qrcode

Imager::QRCode(3pm)					User Contributed Perl Documentation				       Imager::QRCode(3pm)

NAME

       Imager::QRCode - Generate QR Code with Imager using libqrencode

SYNOPSIS

	   use Imager::QRCode;

	   my $qrcode = Imager::QRCode->new(
	       size	     => 2,
	       margin	     => 2,
	       version	     => 1,
	       level	     => 'M',
	       casesensitive => 1,
	       lightcolor    => Imager::Color->new(255, 255, 255),
	       darkcolor     => Imager::Color->new(0, 0, 0),
	   );
	   my $img = $qrcode->plot("blah blah");
	   $img->write(file => "qrcode.gif");

	   # or instance method
	   use Imager::QRCode qw(plot_qrcode);

	   my $img = plot_qrcode("blah blah", \%params);
	   $img->write(file => "qrcode.gif");

DESCRIPTION

       This module allows you to generate QR Code with Imager. This module use libqrencode '2.0.0' and above.

METHODS

       new
	       $qrcode = Imager::QRCode->new(%params);

	   The "new()" constructor method instantiates a new Imager::QRCode object. "new()" accepts the following parameters.

	   o   "size" - Horizontal and vertical size of module(dot). Default is 4.

	   o   "margin" - Margin size of QR Code. Default is 3.

	   o   "level" - Error collectin level. Valid values are 'M', 'L', 'Q' or 'H'. Default is 'L'.

	   o   "version" - Version of the symbol. If specify '0', this module chooses the minimum version for the input data. Default is '0'.

	   o   "mode" - Encoding mode. Valid values are 'numerical', 'alpha-numerical', '8-bit' or 'kanji'. Default is '8-bit'.

	       If not give "casesensitive" then should be given "mode". If 'kanji' is given, characters will be encoded as Shift-JIS characters.
	       If '8-bit' is given, all of non-alpha-numerical characters will be encoded as is. If you want to embed UTF-8 string, choose
	       '8-bit'.

	   o   "casesensitive" - If your application is case-sensitive using 8-bit characters, set to '1'. Default is '0'.

       plot($text)
	       $img = $qrcode->plot("blah blah");

	   Create a new QR Code image. This method returns Imager object ploted QR Code with the given text.

INSTANT METHODS

       plot_qrcode($text, \%params)
	   Instant method. $text is input text. %params is same parameter as "new()".

SEE ALSO

       "Imager", "http://www.qrcode.com/", "http://megaui.net/fukuchi/works/qrencode/index.en.html"

AUTHOR

       Yoshiki KURIHARA  "<kurihara __at__ cpan.org>"

THANKS

       Tokuhiro Matsuno

LICENCE AND COPYRIGHT

       Copyright (c) 2011, Yoshiki KURIHARA "<kurihara __at__ cpan.org>".

       This module is free software; you can redistribute it and/or modify it under the same terms as Perl itself. See perlartistic.

perl v5.14.2							    2012-12-16						       Imager::QRCode(3pm)
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