NAME
    Web::Query - Yet another scraping library like jQuery

SYNOPSIS
        use Web::Query;

        wq('http://google.com/search?q=foobar')
              ->find('h2')
              ->each(sub {
                    my $i = shift;
                    printf("%d) %s\n", $i+1, $_->text
              });

DESCRIPTION
    Web::Query is a yet another scraping framework, have a jQuery like
    interaface.

    Yes, I know ingy's pQuery. But it's just a alpha quality. It doesn't
    works. Web::Query built at top of the CPAN modules,
    HTML::TreeBuilder::XPath, LWP::UserAgent, and HTML::Selector::XPath.

    So, this module uses HTML::Selector::XPath, then this module only
    supports CSS3 selector supported by HTML::Selector::XPath. Web::Query
    doesn't support jQuery's extended quries(yet?).

    THIS LIBRARY IS UNDER DEVELOPMENT. ANY API MAY CHANGE WITHOUT NOTICE.

FUNCTIONS
    wq($stuff)
        This is a shortcut for "Web::Query->new($stuff)". This function is
        exported by default.

METHODS
    my $q = Web::Query->new($stuff)
        Create new instance of Web::Query. You can make the instance from
        URL(http, https, file scheme), HTML in string, URL in string, URI
        object, and instance of HTML::Element.

        This method throw the exception on unknown $stuff.

        This method returns undefined value on non successful response with
        URL.

    my $q = Web::Query->new_from_element($element: HTML::Element)
        Create new instance of Web::Query from instance of HTML::Element.

    my $q = Web::Query->new_from_html($html: Str)
        Create new instance of Web::Query from html.

    my $q = Web::Query->new_from_url($url: Str)
        Create new instance of Web::Query from url.

        If the response is not success(It means /^20[0-9]$/), this method
        returns undefined value.

        You can get a last result of response, use the
        $Web::Query::RESPONSE.

        Here is a best practical code:

            my $url = 'http://example.com/';
            my $q = Web::Query->new_from_url($url)
                or die "Cannot get a resource from $url: " . Web::Query->last_response()->status_line;

    my $q = Web::Query->new_from_file($file_name: Str)
        Create new instance of Web::Query from file name.

    my @html = $q->html();
    my $html = $q->html();
    $q->html('<p>foo</p>');
        Get/set the innerHTML.

    my @text = $q->text();
    my $text = $q->text();
    $q->text('text');
        Get/Set the inner text.

    my $attr = $q->attr($name);
    $q->attr($name, $val);
        Get/Set the attribute value in element.

    $q = $q->find($selector)
        This method find nodes by $selector from $q. $selector is a CSS3
        selector.

    $q->each(sub { my ($i, $elem) = @_; ... })
        Visit each nodes. $i is a counter value, 0 origin. $elem is
        iteration item. $_ is localized by $elem.

    $q->map(sub { my ($i, $elem) = @_; ... })
        Creates a new array with the results of calling a provided function
        on every element.

    $q->filter(sub { my ($i, $elem) = @_; ... })
        Reduce the elements to those that pass the function's test.

    $q->end()
        Back to the before context like jQuery.

    my $size = $q->size() : Int
        Return the number of DOM elements matched by the Web::Query object.

    my $parent = $q->parent() : Web::Query
        Return the parent node from $q.

    my $first = $q->first()
        Return the first matching element.

        This method constructs a new Web::Query object from the first
        matching element.

    my $last = $q->last()
        Return the last matching element.

        This method constructs a new Web::Query object from the last
        matching element.

HOW DO I CUSTOMIZE USER AGENT?
    You can specify your own instance of LWP::UserAgent.

        $Web::Query::UserAgent = LWP::UserAgent->new( agent => 'Mozilla/5.0' );

INCOMPATIBLE CHANGES
    0.10
        new_from_url() is no longer throws exception on bad response from
        HTTP server.

AUTHOR
    Tokuhiro Matsuno <tokuhirom AAJKLFJEF@ GMAIL COM>

SEE ALSO
    pQuery

LICENSE
    Copyright (C) Tokuhiro Matsuno

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

