99454be38c
Moved the various classes used by the Activity class to their own files. There were >10 classes in the same file, with around 1500 lines in the file. Just too big. This change makes autoloading work for these classes, so also removed the hard require in lib/common.php.
244 lines
7.1 KiB
PHP
244 lines
7.1 KiB
PHP
<?php
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/**
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* StatusNet, the distributed open-source microblogging tool
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*
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* An activity
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*
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* PHP version 5
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*
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* LICENCE: This program is free software: you can redistribute it and/or modify
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* it under the terms of the GNU Affero General Public License as published by
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* the Free Software Foundation, either version 3 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU Affero General Public License for more details.
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*
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* You should have received a copy of the GNU Affero General Public License
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* along with this program. If not, see <http://www.gnu.org/licenses/>.
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*
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* @category Feed
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* @package StatusNet
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* @author Evan Prodromou <evan@status.net>
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* @author Zach Copley <zach@status.net>
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* @copyright 2010 StatusNet, Inc.
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* @license http://www.fsf.org/licensing/licenses/agpl-3.0.html AGPLv3
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* @link http://status.net/
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*/
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if (!defined('STATUSNET')) {
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exit(1);
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}
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/**
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* Utilities for turning DOMish things into Activityish things
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*
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* Some common functions that I didn't have the bandwidth to try to factor
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* into some kind of reasonable superclass, so just dumped here. Might
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* be useful to have an ActivityObject parent class or something.
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*
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* @category OStatus
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* @package StatusNet
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* @author Evan Prodromou <evan@status.net>
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* @copyright 2010 StatusNet, Inc.
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* @license http://www.fsf.org/licensing/licenses/agpl-3.0.html AGPLv3
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* @link http://status.net/
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*/
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class ActivityUtils
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{
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const ATOM = 'http://www.w3.org/2005/Atom';
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const LINK = 'link';
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const REL = 'rel';
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const TYPE = 'type';
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const HREF = 'href';
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const CONTENT = 'content';
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const SRC = 'src';
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/**
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* Get the permalink for an Activity object
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*
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* @param DOMElement $element A DOM element
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*
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* @return string related link, if any
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*/
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static function getPermalink($element)
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{
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return self::getLink($element, 'alternate', 'text/html');
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}
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/**
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* Get the permalink for an Activity object
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*
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* @param DOMElement $element A DOM element
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*
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* @return string related link, if any
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*/
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static function getLink(DOMNode $element, $rel, $type=null)
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{
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$els = $element->childNodes;
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foreach ($els as $link) {
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if (!($link instanceof DOMElement)) {
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continue;
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}
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if ($link->localName == self::LINK && $link->namespaceURI == self::ATOM) {
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$linkRel = $link->getAttribute(self::REL);
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$linkType = $link->getAttribute(self::TYPE);
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if ($linkRel == $rel &&
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(is_null($type) || $linkType == $type)) {
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return $link->getAttribute(self::HREF);
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}
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}
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}
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return null;
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}
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static function getLinks(DOMNode $element, $rel, $type=null)
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{
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$els = $element->childNodes;
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$out = array();
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foreach ($els as $link) {
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if ($link->localName == self::LINK && $link->namespaceURI == self::ATOM) {
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$linkRel = $link->getAttribute(self::REL);
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$linkType = $link->getAttribute(self::TYPE);
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if ($linkRel == $rel &&
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(is_null($type) || $linkType == $type)) {
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$out[] = $link;
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}
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}
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}
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return $out;
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}
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/**
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* Gets the first child element with the given tag
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*
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* @param DOMElement $element element to pick at
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* @param string $tag tag to look for
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* @param string $namespace Namespace to look under
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*
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* @return DOMElement found element or null
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*/
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static function child(DOMNode $element, $tag, $namespace=self::ATOM)
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{
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$els = $element->childNodes;
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if (empty($els) || $els->length == 0) {
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return null;
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} else {
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for ($i = 0; $i < $els->length; $i++) {
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$el = $els->item($i);
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if ($el->localName == $tag && $el->namespaceURI == $namespace) {
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return $el;
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}
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}
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}
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}
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/**
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* Grab the text content of a DOM element child of the current element
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*
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* @param DOMElement $element Element whose children we examine
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* @param string $tag Tag to look up
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* @param string $namespace Namespace to use, defaults to Atom
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*
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* @return string content of the child
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*/
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static function childContent(DOMNode $element, $tag, $namespace=self::ATOM)
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{
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$el = self::child($element, $tag, $namespace);
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if (empty($el)) {
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return null;
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} else {
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return $el->textContent;
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}
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}
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static function childHtmlContent(DOMNode $element, $tag, $namespace=self::ATOM)
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{
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$el = self::child($element, $tag, $namespace);
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if (empty($el)) {
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return null;
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} else {
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return self::textConstruct($el);
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}
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}
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/**
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* Get the content of an atom:entry-like object
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*
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* @param DOMElement $element The element to examine.
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*
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* @return string unencoded HTML content of the element, like "This -< is <b>HTML</b>."
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*
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* @todo handle remote content
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* @todo handle embedded XML mime types
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* @todo handle base64-encoded non-XML and non-text mime types
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*/
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static function getContent($element)
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{
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return self::childHtmlContent($element, self::CONTENT, self::ATOM);
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}
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static function textConstruct($el)
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{
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$src = $el->getAttribute(self::SRC);
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if (!empty($src)) {
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throw new ClientException(_("Can't handle remote content yet."));
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}
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$type = $el->getAttribute(self::TYPE);
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// slavishly following http://atompub.org/rfc4287.html#rfc.section.4.1.3.3
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if (empty($type) || $type == 'text') {
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return $el->textContent;
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} else if ($type == 'html') {
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$text = $el->textContent;
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return htmlspecialchars_decode($text, ENT_QUOTES);
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} else if ($type == 'xhtml') {
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$divEl = ActivityUtils::child($el, 'div', 'http://www.w3.org/1999/xhtml');
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if (empty($divEl)) {
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return null;
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}
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$doc = $divEl->ownerDocument;
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$text = '';
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$children = $divEl->childNodes;
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for ($i = 0; $i < $children->length; $i++) {
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$child = $children->item($i);
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$text .= $doc->saveXML($child);
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}
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return trim($text);
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} else if (in_array($type, array('text/xml', 'application/xml')) ||
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preg_match('#(+|/)xml$#', $type)) {
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throw new ClientException(_("Can't handle embedded XML content yet."));
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} else if (strncasecmp($type, 'text/', 5)) {
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return $el->textContent;
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} else {
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throw new ClientException(_("Can't handle embedded Base64 content yet."));
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}
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}
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}
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