NAME

    HTML::AsText::Fix - extends HTML::Element::as_text() to render text
    properly

VERSION

    version 0.003

SYNOPSIS

        # fix individual objects
        my $tree = HTML::TreeBuilder::XPath->new_from_content($html);
        my $guard = HTML::AsText::Fix::object($tree);
    
        # fix deeply nested objects
        use URI;
        use Web::Scraper;
    
        # First, create your scraper block
        my $tweets = scraper {
            process "li.status", "tweets[]" => scraper {
                process ".entry-content", body => 'TEXT';
                process ".entry-date", when => 'TEXT';
                process 'a[rel="bookmark"]', link => '@href';
            };
        };
    
        my $res;
        {
            my $guard = HTML::AsText::Fix::global();
            $res = $tweets->scrape( URI->new("http://twitter.com/creaktive") );
        }

DESCRIPTION

    Consider the following HTML sample:

        <p>
            <span>AAA</span>
            BBB
        </p>
        <h2>CCC</h2>
        DDD
        <br>
        EEE

    HTML::Element::as_text() method stringifies it as AAABBBCCCDDDEEE.
    Despite being correct, this is far from the actual renderization within
    a "real" browser. links(1), lynx(1) & w3m(1) break lines this way:

        AAABBB
        CCC
        DDD
        EEE

    This module tries to implement the same behavior in the method
    "as_text" in HTML::Element. By default, $/ value is inserted in place
    of line breaks, and "\x{200b}" (Unicode zero-width space) separates
    text from adjacent inline elements.

 Distinction between block/inline nodes

    "span", for instance, is an inline node:

        <p><span>A</span>pple</p>

    In that case, there really shouldn't be a space between "A" and "pple".
    To handle inline nodes properly, only block nodes are separated by line
    break. Following nodes are currently assumed being blocks:

      * p

      * h1 h2 h3 h4 h5 h6

      * dl dt dd

      * ol ul li

      * dir

      * address

      * blockquote

      * center

      * del

      * div

      * hr

      * ins

      * noscript script

      * pre

      * br (just to make sense)

    (source: http://en.wikipedia.org/wiki/HTML_element#Block_elements)

FUNCTIONS

 as_text

    The replacement function. Not to be used separately. It is injected
    inside HTML::Element.

 global

    Hook into every HTML::Element within the lexical scope. Returns the
    guard object, destroying it will unhook safely.

    Accepts following options:

      * lf_char: character inserted between block nodes (by default, $/);

      * zwsp_char: character inserted between inline nodes (by default,
      "\x{200b}", Unicode zero-width space);

      * trim: trim heading/trailing spaces (considers "\x{A0}" as space!);

      * extra_chars: extra characters to trim;

      * skip_dels: if true, then text content under "del" nodes is not
      included in what's returned.

    For example, to completely get rid of separation between inline nodes:

        my $guard = HTML::AsText::Fix::global(zwsp_char => '');

 object

    Hook object instance. Accepts the same options as "global":

        my $guard = HTML::AsText::Fix::object($tree, zwsp_char => '');

SEE ALSO

      * HTML::Element

      * HTML::Tree

      * HTML::FormatText

      * Monkey::Patch

ACKNOWLEDGEMENTS

      * Αριστοτέλης Παγκαλτζής <https://metacpan.org/author/ARISTOTLE>

      * Toby Inkster <https://metacpan.org/author/TOBYINK>

AUTHOR

    Stanislaw Pusep <stas@sysd.org>

COPYRIGHT AND LICENSE

    This software is copyright (c) 2014 by Stanislaw Pusep.

    This is free software; you can redistribute it and/or modify it under
    the same terms as the Perl 5 programming language system itself.