org_openpsa_httplib_helpers

Complexity

Total Complexity

9

Size/Duplication

Total Lines	58
Duplicated Lines	0 %

Test Coverage

Coverage

100%

Importance

Changes	1
Bugs	0	Features	0

3 Methods

Rating	Name	Duplication	Size	Complexity
A	get_anchor_values()	0	10	4
A	get_link_values()	0	13	3
A	get_meta_value()	0	7	2

<?php
/**
 * @package org.openpsa.httplib
 * @author The Midgard Project, http://www.midgard-project.org
 * @copyright The Midgard Project, http://www.midgard-project.org
 * @license http://www.gnu.org/licenses/lgpl.html GNU Lesser General Public License
 */

use Symfony\Component\DomCrawler\Crawler;

/**
 * Helpers for HTTP content fetching and handling
 *
 * @package org.openpsa.httplib
 */
class org_openpsa_httplib_helpers extends midcom_baseclasses_components_purecode
{
    /**
     * Get value of a meta tag in HTML page.
     *
     * @param string $html HTML to parse
     * @param string $name Name of the meta tag to fetch
     * @return ?string
     */
    public static function get_meta_value($html, $name)
    {
        $crawler = new Crawler($html);
        if ($crawler->filter('head meta[name="' . $name . '"]')->count() == 0) {
            return null;
        }
        return (string) $crawler->filter('head meta[name="' . $name . '"]')->attr('content');
    }

    /**
     * Get value(s) of a link tag(s) in HTML page.
     *
     * @param string $html HTML to parse
     * @param string $relation Relation (rel) or reverse relation (rev) of the link tag to fetch
     * @return array Links matching given criteria as arrays containing keys title, href and optionally hreflang
     */
    public static function get_link_values($html, $relation) : array
    {
        $crawler = new Crawler($html);
        $nodes = $crawler->filter('head link[rel="' . $relation . '"]');

        return $nodes->each(function(Crawler $node, $i) {
            $tag = ['title' => false, 'href' => false, 'hreflang' => false];
            foreach ($tag as $property => &$value) {
                if ($node->attr($property) !== null) {
                    $value = $node->attr($property);
                }
            }
            return $tag;
        });
    }

    /**
     * Get value(s) of an anchor tag(s) in HTML page.
     *
     * @param string $html HTML to parse
     * @param string $relation Relation (rel) of the anchor to fetch
     * @return array Links matching given criteria as arrays containing keys title, href and value
     */
    public static function get_anchor_values($html, $relation) : array
    {
        $crawler = new Crawler($html);
        $nodes = $crawler->filter('a[rel="' . $relation . '"]');

        return $nodes->each(function(Crawler $node, $i) {
            return [
                'title' => ($node->attr('title') !== null) ? $node->attr('title') : false,
                'href' => ($node->attr('href') !== null) ? $node->attr('href') : false,
                'value' => ($node->text() !== null) ? $node->text() : false,

The condition $node->text() !== null is always true.

            ];
        });
    }
}