VERSION

This document describes Syntax::Highlight::Engine::Simple

SYNOPSIS

use Syntax::Highlight::Engine::Simple;

# Constractor
$highlight = Syntax::Highlight::Engine::Simple->new(%hash);

# Parameter configuration
$highlight->setParams(%hash);

# Syntax definision and addition
$highlight->setSyntax(%hash);
$highlight->appendSyntax(%hash);

# Perse
$highlight->doFile(%hash);
$highlight->doStr(%hash);

# Utilities
$highlight->array2regexp(%hash);
$highlight->getClassNames(%hash);

DESCRIPTION

This is a Syntax highlight Engine. This generates a part of HTML string by marking up the input string with span tags along the given rules so that you can easily coloring with CSS.

Advantage is the simpleness. This provides a simple way to define the highlighting rules by packing the complicated part of it into regular expression. Also, This works faster than similar highlight solutions on rough benchmarks.

Here is a working example of This module.

http://jamadam.com/dev/cpan/demo/Syntax/Highlight/Engine/Simple/

INTERFACE

new

new constractor calls for following arguments.

type

File type. This argument causes specific sub class to be loaded.

syntax

With this argument, you can assign rules in constractor.

setParams

This method calls for following arguments.

html_escape_code_ref

HTML escape code ref. Default subroutine escapes 3 characters '&', '<' and '>'.

setSyntax

Set the rules for highlight. It calls for a argument syntax in array.

    $highlighter->setSyntax(
        syntax => [
                {
                    class => 'tag',
                    regexp => "<.+?>",
                },
                {
                    class => 'quote',
                    regexp => "'.*?'",
                    container => 'tag',
                },
                {
                    class => 'wquote',
                    regexp => '".*?"',
                    container => 'tag',
                },
                {
                    class => 'keyword',
                    regexp => 'somekeyword',
                    container => ['tag', 'quote', 'wquote'],
                },
        ]
    );

The array can contain rules in hash which is consists of 3 keys, class, regexp and container.

class

This appears to the output SPAN tag.

regexp

Regular expression to be highlighted.

container

Class names of allowed container. It can be given in String or Array. This restricts the regexp to stand only inside of the classes. This parameter also works to ease the regulation some time. The highlighting rules doesn't stand in any container in default. This parameter eliminates it.

appendSyntax

Append syntax by giving a hash.

    $highlighter->setSyntax(
        syntax => {
            class       => 'quote',
            regexp      => "'.*?'",
            container   => 'tag',
        }
    );

doStr

Highlighting input string and returns the marked up string. This method calls for following arguments.

str

String.

tab_width

Tab width for tab-space conversion. -1 for disable it. -1 is the default.

    $highlighter->doStr(
        str         => $str,
        tab_width   => 4
    );

doFile

Highlighting the file and returns the marked up string. This method calls for following arguments.

file

File name.

tab_width

Tab width for tab-space conversion. -1 for disable it. -1 is the default.

encode

Set the encode of file. utf8 is the default.

    $highlighter->doStr(
        str         => $str,
        tab_width   => 4,
        encode      => 'utf8'
    );

array2regexp

This is a utility method for converting string array to regular expression.

getClassNames

Returns the class names in array.

DIAGNOSTICS

"doStr method got undefined value"

"File open failed"

CONFIGURATION AND ENVIRONMENT

Syntax::Highlight::Engine::Simple requires no configuration files or environment variables. Specific language syntax can be defined with sub classes and loaded in constructor if you give it the type argument.

DEPENDENCIES

UNIVERSAL::require

encoding

INCOMPATIBILITIES

None reported.

AUTHOR

Sugama Keita "<[email protected]>"

LICENCE AND COPYRIGHT

Copyright (c) 2008, Sugama Keita "<[email protected]>". All rights reserved.

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

DISCLAIMER OF WARRANTY

BECAUSE THIS SOFTWARE IS LICENSED FREE OF CHARGE, THERE IS NO WARRANTY FOR THE SOFTWARE, TO THE EXTENT PERMITTED BY APPLICABLE LAW. EXCEPT WHEN OTHERWISE STATED IN WRITING THE COPYRIGHT HOLDERS AND/OR OTHER PARTIES PROVIDE THE SOFTWARE ``AS IS'' WITHOUT WARRANTY OF ANY KIND, EITHER EXPRESSED OR IMPLIED, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE. THE ENTIRE RISK AS TO THE QUALITY AND PERFORMANCE OF THE SOFTWARE IS WITH YOU. SHOULD THE SOFTWARE PROVE DEFECTIVE, YOU ASSUME THE COST OF ALL NECESSARY SERVICING, REPAIR, OR CORRECTION.

IN NO EVENT UNLESS REQUIRED BY APPLICABLE LAW OR AGREED TO IN WRITING WILL ANY COPYRIGHT HOLDER, OR ANY OTHER PARTY WHO MAY MODIFY AND/OR REDISTRIBUTE THE SOFTWARE AS PERMITTED BY THE ABOVE LICENCE, BE LIABLE TO YOU FOR DAMAGES, INCLUDING ANY GENERAL, SPECIAL, INCIDENTAL, OR CONSEQUENTIAL DAMAGES ARISING OUT OF THE USE OR INABILITY TO USE THE SOFTWARE (INCLUDING BUT NOT LIMITED TO LOSS OF DATA OR DATA BEING RENDERED INACCURATE OR LOSSES SUSTAINED BY YOU OR THIRD PARTIES OR A FAILURE OF THE SOFTWARE TO OPERATE WITH ANY OTHER SOFTWARE), EVEN IF SUCH HOLDER OR OTHER PARTY HAS BEEN ADVISED OF THE POSSIBILITY OF SUCH DAMAGES.