<?php
/**
* SeekQuarry/Yioop --
* Open Source Pure PHP Search Engine, Crawler, and Indexer
*
* Copyright (C) 2009 - 2020 Chris Pollett chris@pollett.org
*
* LICENSE:
*
* This program is free software: you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation, either version 3 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program. If not, see <https://www.gnu.org/licenses/>.
*
* END LICENSE
*
* @author Chris Pollett chris@pollett.org
* @license https://www.gnu.org/licenses/ GPL3
* @link https://www.seekquarry.com/
* @copyright 2009 - 2020
* @filesource
*/
namespace seekquarry\yioop\views\helpers;
use seekquarry\yioop as B;
use seekquarry\yioop\configs as C;
use seekquarry\yioop\library\CrawlConstants;
use seekquarry\yioop\library\UrlParser;
/**
* Helper used to draw links and snippets for RSS feeds
*
* @author Chris Pollett
*/
class FeedsHelper extends Helper implements CrawlConstants
{
/**
* Takes page summaries for RSS pages and the current query
* and draws list of news links and a link to the news link subsearch
* page if applicable.
*
* @param array $feed_pages page data from news feeds
* @param string $csrf_token token to prevent cross site request forgeries
* @param string $query the current search query
* @param boolean $open_in_tabs whether new links should be opened in
* tabs
*/
public function render($feed_pages, $csrf_token, $query, $subsearch,
$open_in_tabs = false)
{
$feed_url = B\subsearchUrl($subsearch);
$query_array = (empty($csrf_token)) ? [] :
[C\CSRF_TOKEN => $csrf_token];
$delim = (C\REDIRECTS_ON) ? "?" : "&";
if ($subsearch != 'news') {
$not_news = true;
$query_string = http_build_query(array_merge($query_array,
[ "q" => urldecode($query)]));
?>
<h2><a href="<?= $feed_url . $delim . $query_string ?>"
><?= tl('feeds_helper_view_feed_results',
urldecode($query)) ?></a></h2>
<?php
} else {
$not_news = false;
}?>
<div class="feed-list">
<?php
$time = time();
foreach ($feed_pages as $page) {
if ($not_news) {
$pub_date = $page[self::PUBDATE];
$encode_source = urlencode(
urlencode($page[self::SOURCE_NAME]));
$pub_date = $this->getPubdateString($time, $pub_date);
$media_url = $feed_url . $delim .
http_build_query(array_merge($query_array,
[ "q" => "media:$subsearch:".urldecode($encode_source)]));
?>
<div class="blockquote">
<a href="<?= $page[self::URL]
?>" rel="nofollow" <?php
if ($open_in_tabs) {
?> target="_blank" rel="noopener" <?php
}
?>><?= $page[self::TITLE] ?></a>
<a class="gray-link" rel='nofollow' href="<?=
$media_url ?>" ><?= $page[self::SOURCE_NAME]?></a>
<span class='gray'> - <?=$pub_date ?></span>
</div>
<?php
} else {
$this->renderFeedItem($page, $csrf_token, $query, $subsearch,
$open_in_tabs);
}
}
?>
</div>
<?php
}
/**
* Renders one search source feed item into SERP.
* @param array $page page data of a feed item to render
* @param string $csrf_token token to prevent cross site request forgeries
* @param string $query the current search query
* @param string $subsearch name of subsearch page this image group on
* @param boolean $open_in_tabs whether new links should be opened in
* tabs
*/
public function renderFeedItem($page, $csrf_token, $query,
$subsearch, $open_in_tabs)
{
$feed_url = B\subsearchUrl($subsearch);
$query_array = (empty($csrf_token)) ? [] :
[C\CSRF_TOKEN => $csrf_token];
$delim = (C\REDIRECTS_ON) ? "?" : "&";
$pub_date = $page[self::PUBDATE];
$encode_source = urlencode(
urlencode($page[self::SOURCE_NAME]));
$time = time();
$pub_date = $this->getPubdateString($time, $pub_date);
$media_url = $feed_url . $delim .
http_build_query(array_merge($query_array,
[ "q" => "media:$subsearch:".urldecode($encode_source)]));
if (isset($page[self::URL])) {
if (strncmp($page[self::URL], "url|", 4) == 0) {
$url_parts = explode("|", $page[self::URL]);
$url = $url_parts[1];
$title = UrlParser::simplifyUrl($url, 60);
$subtitle = "title='".$page[self::URL]."'";
} else {
$url = $page[self::URL];
$title = $page[self::TITLE];
if (strlen(trim($title)) == 0) {
$title = UrlParser::simplifyUrl($url, 60);
}
$subtitle = "";
}
} else {
$url = "";
$title = isset($page[self::TITLE]) ? $page[self::TITLE] :"";
$subtitle = "";
}
$image_string = "";
$sf = "";
$image_hash = "";
if (!empty($page[self::IMAGE_LINK])) {
$link_scheme = substr($page[self::IMAGE_LINK], 0, 7);
if ($link_scheme == "data:im") {
$image_string = "<img class='float-same' ".
"src='{$page[self::IMAGE_LINK]}' alt='' />";
} else if ($link_scheme == "feed://") {
$image_link_parts = explode("/", $page[self::IMAGE_LINK]);
if (!empty($image_link_parts[3])) {
list(, , $sf, $image_hash) = $image_link_parts;
}
} else { //old style image link
if(preg_match("/sf\=([^\&]+)/", $page[self::IMAGE_LINK],
$sf_match) && preg_match("/n\=([^\&]+)/",
$page[self::IMAGE_LINK], $n_match)) {
$sf = $sf_match[1];
$image_hash = $n_match[1];
}
}
if (!empty($sf) && !empty($image_hash)) {
if (C\nsdefined("REDIRECTS_ON") && C\REDIRECTS_ON) {
$image_url = C\NAME_SERVER . "wd/resources/feed/".
C\PUBLIC_GROUP_ID . "/1/$sf/$image_hash";
} else {
$image_url = C\NAME_SERVER .
"?c=resource&a=get&f=resources".
"&g=" . C\PUBLIC_GROUP_ID .
"&t=feed&sf=$sf" . "&n=$image_hash";
}
$image_string = "<img class='float-same' ".
"src='$image_url' alt='' />";
}
}
?>
<div class="news-result">
<?php e($image_string); ?>
<h2><a href="<?= $page[self::URL] ?>" rel="nofollow" <?php
if ($open_in_tabs) {
?> target="_blank" rel="noopener" <?php
}
?>><?= $page[self::TITLE] ?></a>.
<a class="gray-link" rel='nofollow' href="<?= $media_url
?>" ><?= $page[self::SOURCE_NAME] ?></a>
<span class='gray'> - <?= $pub_date ?></span>
</h2>
<p class="echo-link" <?=$subtitle?> ><?=
UrlParser::simplifyUrl($url, 100) . " " ?></p>
<?php
$description = isset($page[self::DESCRIPTION]) ?
$page[self::DESCRIPTION] : "";
e("<p>$description</p>");
?>
</div>
<?php
}
/**
* Write as an string in the current locale the difference between the
* publication date of a post and the current time
*
* @param int $time timestamp for current time
* @param int $pub_date timestamp for feed_item publication
* @return string in the current locale the time difference
*/
public function getPubdateString($time, $pub_date)
{
$delta = $time - $pub_date;
if ($delta < C\ONE_DAY) {
$num_hours = ceil($delta/C\ONE_HOUR);
if ($num_hours <= 2) {
if ($num_hours > 1) {
$pub_date = tl('feeds_helper_view_onehour');
} else {
$num_minutes = floor($delta/C\ONE_MINUTE);
$remainder_seconds = $delta % C\ONE_MINUTE;
$pub_date =
tl('feeds_helper_view_minsecs', $num_minutes,
$remainder_seconds);
}
} else {
$pub_date =
tl('feeds_helper_view_hourdate', $num_hours);
}
} else {
$pub_date = date("d/m/Y", $pub_date);
}
return $pub_date;
}
}