in reply to How To Use Bootstrap Code in Perl Script?

Hi glennpm,

Whatever else you do (and a HEREDOC is perfectly fine for generating the HTML, as is Template Toolkit), the one thing you have to do differently with CGI is print headers, followed by at least a single blank line.

For example: 

#!/usr/bin/perl
use strict;
use warnings;

# CGI headers (note two newlines, one for a blank line)
print "Content-type:  text/html\n\n";

# Now anything else you do is HTML ...
print "<body style='background:cyan'>\n";
print "  <center>\n";
print "    <h1>Hello world!</h1>\n";
print "  </center>\n";
print "</body>\n";

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BTW, another style I've gotten in the habit of in place of HEREDOCS is to quote a block of text with qq{ ... }, putting colons ':' at the beginning of each line for visual ease of reading, and finally reformat the text to remove the colons and print it out. For example: 

# CGI headers (note two newlines, one for a blank line)
print "Content-type:  text/html\n\n";

# Another way to format HTML
my $text = qq{
    :<body style="background:cyan">
    :  <center>
    :    <h1> Hello world! </1>
    :  </center>
    :</body>
};

output($text);


# Subroutines
sub output {
    my ($text) = @_;

    # Reformat the HTML text (remove leading colons ':')
    $text =~ s/(^\s+:)|((?<=\n)\s+:)|(\s+$)//g;

    # And output it
    print $text;
}

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say  substr+lc crypt(qw $i3 SI$),4,5

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