package SHARYANTO::HTML::Extract::ImageLinks;
use 5.010;
use strict;
use warnings;
use HTML::Parser;
use URI::URL;
use Exporter;
our @ISA = qw(Exporter);
our @EXPORT_OK = qw(extract_image_links);
our $VERSION = '0.76'; # VERSION
our %SPEC;
$SPEC{extract_image_links} = {
v => 1.1,
summary => 'Extract image links from HTML document',
description => <<'_',
Either specify either url, html.
_
args => {
html => {
schema => 'str*',
req => 1,
summary => 'HTML document to extract from',
cmdline_src => 'stdin_or_files',
},
base => {
schema => 'str',
summary => 'base URL for images',
},
},
};
sub extract_image_links {
my %args = @_;
my $html = $args{html};
my $base = $args{base};
# get base from <BASE HREF> if exists
if (!$base) {
if ($html =~ /<base\b[^>]*\bhref\s*=\s*(["']?)(\S+?)\1[^>]*>/is) {
$base = $2;
}
}
my %memory;
my @res;
my $p = HTML::Parser->new(
api_version => 3,
start_h => [
sub {
my ($tagname, $attr) = @_;
return unless $tagname =~ /^img$/i;
for ($attr->{src}) {
s/#.*//;
if (++$memory{$_} == 1) {
push @res, URI::URL->new($_, $base)->abs()->as_string;
}
}
}, "tagname, attr"],
);
$p->parse($html);
[200, "OK", \@res];
}
1;
# ABSTRACT: Extract image links from HTML document
__END__
=pod
=encoding UTF-8
=head1 NAME
SHARYANTO::HTML::Extract::ImageLinks - Extract image links from HTML document
=head1 VERSION
This document describes version 0.76 of SHARYANTO::HTML::Extract::ImageLinks (from Perl distribution SHARYANTO-Utils), released on 2014-10-11.
=head1 FUNCTIONS
=head2 extract_image_links(%args) -> [status, msg, result, meta]
Extract image links from HTML document.
Either specify either url, html.
Arguments ('*' denotes required arguments):
=over 4
=item * B<base> => I<str>
base URL for images.
=item * B<html>* => I<str>
HTML document to extract from.
=back
Return value:
Returns an enveloped result (an array).
First element (status) is an integer containing HTTP status code
(200 means OK, 4xx caller error, 5xx function error). Second element
(msg) is a string containing error message, or 'OK' if status is
200. Third element (result) is optional, the actual result. Fourth
element (meta) is called result metadata and is optional, a hash
that contains extra information.
(any)
=head1 SEE ALSO
L<SHARYANTO>
=head1 HOMEPAGE
Please visit the project's homepage at L<https://metacpan.org/release/SHARYANTO-Utils>.
=head1 SOURCE
Source repository is at L<https://github.com/sharyanto/perl-SHARYANTO-Utils>.
=head1 BUGS
Please report any bugs or feature requests on the bugtracker website L<https://rt.cpan.org/Public/Dist/Display.html?Name=SHARYANTO-Utils>
When submitting a bug or request, please include a test-file or a
patch to an existing test-file that illustrates the bug or desired
feature.
=head1 AUTHOR
perlancar <perlancar@cpan.org>
=head1 COPYRIGHT AND LICENSE
This software is copyright (c) 2014 by perlancar@cpan.org.
This is free software; you can redistribute it and/or modify it under
the same terms as the Perl 5 programming language system itself.
=cut