CGI::Pretty(3) User Contributed Perl Documentation CGI::Pretty(3)
NAME
CGI::Pretty - module to produce nicely formatted HTML code
SYNOPSIS
use CGI::Pretty qw( :html3 );
# Print a table with a single data element
print table( TR( td( "foo" ) ) );
DESCRIPTION
CGI::Pretty is a module that derives from CGI. It's sole function is
to allow users of CGI to output nicely formatted HTML code.
When using the CGI module, the following code:
print table( TR( td( "foo" ) ) );
produces the following output:
<TABLE><TR><TD>foo</TD></TR></TABLE>
If a user were to create a table consisting of many rows and many
columns, the resultant HTML code would be quite difficult to read since
it has no carriage returns or indentation.
CGI::Pretty fixes this problem. What it does is add a carriage return
and indentation to the HTML code so that one can easily read it.
print table( TR( td( "foo" ) ) );
now produces the following output:
<TABLE>
<TR>
<TD>foo</TD>
</TR>
</TABLE>
Recommendation for when to use CGI::Pretty
CGI::Pretty is far slower than using CGI.pm directly. A benchmark
showed that it could be about 10 times slower. Adding newlines and
spaces may alter the rendered appearance of HTML. Also, the extra
newlines and spaces also make the file size larger, making the files
take longer to download.
With all those considerations, it is recommended that CGI::Pretty be
used primarily for debugging.
Tags that won't be formatted
The following tags are not formatted: <a>, <pre>, <code>, <script>,
<textarea>, and <td>. If these tags were formatted, the user would see
the extra indentation on the web browser causing the page to look
different than what would be expected. If you wish to add more tags to
the list of tags that are not to be touched, push them onto the @AS_IS
array:
push @CGI::Pretty::AS_IS,qw(XMP);
Customizing the Indenting
If you wish to have your own personal style of indenting, you can
change the $INDENT variable:
$CGI::Pretty::INDENT = "\t\t";
would cause the indents to be two tabs.
Similarly, if you wish to have more space between lines, you may change
the $LINEBREAK variable:
$CGI::Pretty::LINEBREAK = "\n\n";
would create two carriage returns between lines.
If you decide you want to use the regular CGI indenting, you can easily
do the following:
$CGI::Pretty::INDENT = $CGI::Pretty::LINEBREAK = "";
AUTHOR
Brian Paulsen <Brian AT ThePaulsens.com>, with minor modifications by
Lincoln Stein <lstein AT cshl.org> for incorporation into the CGI.pm
distribution.
Copyright 1999, Brian Paulsen. All rights reserved.
This library is free software; you can redistribute it and/or modify it
under the same terms as Perl itself.
Bug reports and comments to Brian AT ThePaulsens.com. You can also write
to lstein AT cshl.org, but this code looks pretty hairy to me and I'm not
sure I understand it!
SEE ALSO
CGI
perl v5.16.3 2011-01-24 CGI::Pretty(3)