NAME Locale::TextDomain::OO::Extract::Base::RegexBasedExtractor - Extract data using regexes

$Id: RegexBasedExtractor.pm 683 2017-08-22 18:41:42Z steffenw $

$HeadURL: svn+ssh://steffenw@svn.code.sf.net/p/perl-gettext-oo/code/extract/trunk/lib/Locale/TextDomain/OO/Extract/Base/RegexBasedExtractor.pm $

VERSION

2.007

DESCRIPTION

This module extracts data using regexes to store anywhere.

SYNOPSIS

use Path::Tiny qw(path);
use Locale::TextDomain::OO::Extract::Base::RegexBasedExtractor;

my $extractor = Locale::TextDomain::OO::Extract::Base::RegexBasedExtractor->new(
    content_ref => \'... string to extract ...',
    start_rule  => qr{ ... }xms,
    rules       => [ qr{ ... ( ... ) ... }xms ],
    debug_code  => sub { ... },
);
$extractor->extract;

SUBROUTINES/METHODS

method new

All parameters are optional.

my $extractor = Locale::TextDomain::OO::Extract::Base::RegexBasedExtractor->new(
    # how to find such lines
    start_rule => qr{ __ n?p?x? \( }xms,

    # how to find the parameters
    rules => [
        [
            # __( 'text'
            # __x( 'text'
            qr{ __ (x?) \s* \( \s* }xms,
            qr{ \s* }xms,
            # You can re-use the next reference.
            # It is a subdefinition.
            [
                qr{
                    [']
                    (
                        [^\\']*              # normal text
                        (?: \\ . [^\\']* )*  # maybe followed by escaped char and normal text
                    )
                    [']
                }xms,
            ],
        ],
        # The next array reference describes an alternative
        # and not a subdefinition.
        'or',
        [
            # next alternative e.g.
            # __n( 'context' , 'text'
            # __nx( 'context' , 'text'
            ...
        ],
    ],

    # debug output for other rules than perl
    debug_code => sub {
        my ($group, $message) = @_;
        # group can anything, used groups are:
        # - stack start
        # - rules start
        # - rules last
        # - rules parent
        # - rules child
        # - rules try
        # - rules current pos
        # - rules match
        # - rules no match
        # - stack clean
    },
);

method extract

Run the extractor

$extractor->extract;

method content_ref

Set/get the content to extract by scalar reference to that string.

method start_rule

Set/get the rule as regex reference that is matching the begin of expected string.

method rules

Set/get an array reference owith all the rules to extract.

method debug_code, clear_debug_code

Set/get a code reference if debugging is needed.

To switch off run method clear_debug_code.

method stack

Set/get the stack as array reference during extraction

EXAMPLE

Inside of this distribution is a directory named example. Run this *.pl files.

DIAGNOSTICS

none

CONFIGURATION AND ENVIRONMENT

none

DEPENDENCIES

Carp

Clone

Data::Dumper

Moo

MooX::StrictConstructor

MooX::Types::MooseLike::Base

namespace::autoclean

INCOMPATIBILITIES

not known

BUGS AND LIMITATIONS

none

SEE ALSO

Locale::TextDoamin::OO

AUTHOR

Steffen Winkler

LICENSE AND COPYRIGHT

Copyright (c) 2009 - 2017, Steffen Winkler <steffenw at cpan.org>. All rights reserved.

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

cpanm Locale::TextDomain::OO::Extract

perl -MCPAN -e shell
install Locale::TextDomain::OO::Extract