Daniel Muey


Text::InHTML - Display plain text in HTML


  use Text::InHTML;
  my $html = Text::InHTML::encode_plain($plain_text_text);
  my $syntax_higlighted_diff = Text::InHTML::encode_diff($plain_text_diff);


In its simplest form it turns a plain text string into HTML that when rendered retains its whitespace without pre tags or pre-like css. Also HTML is encoded so no HTML is rendered like it would be with pre tags. Useful for displaying source code or a text file on a web page exactly as-is.

More advanced useage includes syntax highlighting.


None by default.

Any encode_* is exportable

The tag :common does: encode_plain encode_whitespace encode_perl encode_diff encode_html encode_css encode_sql encode_mysql encode_xml encode_dtd encode_xslt encode_xmlschema



Returns an HTML and whitespace encoded version of $plain_text_string


$tabs is the number of spaces a tab should be considered to be, default is 4

    encode_plain($plain_text_string, $tabs);


Mostly a utility function, returns whitespace encoded version of $string


$tabs is the number of spaces a tab should be considered to be, default is 4

    encode_whitespace($plain_text_string, $tabs);

encode_perl, encode_diff, encode_*

You can call Text::InHTML::encode_whatever(), where "whatever" is a "format" as listed under "Processing text" at Syntax::Highlight::Universal

Note: if the format has a dash, like "html-css" then you need to call it with an underscore in place of each - like so:


and it will return HTML that is syntax highlighted (what Syntax::Highlight::Universal does) *and* retains whitespace (what Syntax::Highlight::Universal does not do)

    my $syntax_highlighted_source_code = Text::InHTML::encode_perl($string); 

    my $syntax_highlighted_source_code = Text::InHTML::encode_perl($string, $syntax);
    my $syntax_highlighted_source_code = Text::InHTML::encode_perl($string, $syntax, $tabs);    

    my $syntax_highlighted_source_code = Text::InHTML::encode_perl($string, undef, $tabs);

    my $syntax_highlighted_source_code = Text::InHTML::encode_perl($string, {}, $tabs);

$tabs is the number of spaces a tab should be considered to be, default is 4

If Syntax::Highlight::Universal is installed, it calls Syntax::Highlight::Universal's highlight method with the given format, othersise it simply does encode_plain()

Additionally $syntax can be a hashref which gives you fine grained control over the Syntax::Highlight::Universal object.

Its keys and values are as follows:


HTML::Entities, Syntax::Highlight::Universal


  • Wrap the whole thing in a div that's monospace styled and source code will look real nice!

  • You'll need to use CSS to color in the highlighted syntax. The Syntax::Highlight::Universal bundle has some samples and info on how to generate that CSS.


Function(s) to facilitate javascript highlighters like google's syntax highlighter framework.


Daniel Muey, http://drmuey.com/cpan_contact.pl


Copyright (C) 2006 by Daniel Muey

This library is free software; you can redistribute it and/or modify it under the same terms as Perl itself, either Perl version 5.8.6 or, at your option, any later version of Perl 5 you may have available.