From cd07592c29391ca374f78a75a10465f894d50042 Mon Sep 17 00:00:00 2001
From: Andrew Dolgov <fox@fakecake.org>
Date: Wed, 1 May 2013 17:04:57 +0400
Subject: add basic tinyparser/atom

---
 classes/feedenclosure.php |   7 +++
 classes/feeditem.php      |  15 ++++++
 classes/feeditem/atom.php | 118 ++++++++++++++++++++++++++++++++++++++++++++++
 classes/feedparser.php    | 101 +++++++++++++++++++++++++++++++++++++++
 4 files changed, 241 insertions(+)
 create mode 100644 classes/feedenclosure.php
 create mode 100644 classes/feeditem.php
 create mode 100644 classes/feeditem/atom.php
 create mode 100644 classes/feedparser.php

(limited to 'classes')

diff --git a/classes/feedenclosure.php b/classes/feedenclosure.php
new file mode 100644
index 000000000..d610dd7c8
--- /dev/null
+++ b/classes/feedenclosure.php
@@ -0,0 +1,7 @@
+<?php
+class FeedEnclosure {
+	public $link;
+	public $type;
+	public $length;
+}
+?>
diff --git a/classes/feeditem.php b/classes/feeditem.php
new file mode 100644
index 000000000..cc39fcee7
--- /dev/null
+++ b/classes/feeditem.php
@@ -0,0 +1,15 @@
+<?php
+class FeedItem {
+	abstract function get_id();
+	abstract function get_date();
+	abstract function get_link();
+	abstract function get_title();
+	abstract function get_description();
+	abstract function get_content();
+	abstract function get_comments_url();
+	abstract function get_comments_count();
+	abstract function get_categories();
+	abstract function get_enclosures();
+	abstract function get_author();
+}
+?>
diff --git a/classes/feeditem/atom.php b/classes/feeditem/atom.php
new file mode 100644
index 000000000..560484eda
--- /dev/null
+++ b/classes/feeditem/atom.php
@@ -0,0 +1,118 @@
+<?php
+class FeedItem_Atom {
+	private $elem;
+
+	function __construct($elem) {
+		$this->elem = $elem;
+	}
+
+	function get_id() {
+		$id = $this->elem->getElementsByTagName("id")->item(0);
+
+		if ($id) {
+			return $id->nodeValue;
+		} else {
+			return $this->get_link();
+		}
+	}
+
+	function get_date() {
+
+
+	}
+
+	function get_link() {
+		$links = $this->elem->getElementsByTagName("link");
+
+		foreach ($links as $link) {
+			if ($link && $link->hasAttribute("href") && !$link->hasAttribute("rel")) {
+				return $link->getAttribute("href");
+			}
+		}
+	}
+
+	function get_title() {
+		$title = $this->elem->getElementsByTagName("title")->item(0);
+
+		if ($title) {
+			return $title->nodeValue;
+		}
+	}
+
+	function get_content() {
+		$content = $this->elem->getElementsByTagName("content")->item(0);
+
+		if ($content) {
+			return $content->nodeValue;
+		}
+	}
+
+	function get_description() {
+		$summary = $this->elem->getElementsByTagName("summary")->item(0);
+
+		if ($summary) {
+			return $summary->nodeValue;
+		}
+	}
+
+	// todo
+	function get_comments_url() {
+
+	}
+
+	// todo
+	function get_comments_count() {
+
+	}
+
+	function get_categories() {
+		$categories = $this->elem->getElementsByTagName("category");
+		$cats = array();
+
+		foreach ($categories as $cat) {
+			if ($cat->hasAttribute("term"))
+				array_push($cats, $cat->getAttribute("term"));
+		}
+
+
+		return $cats;
+	}
+
+	function get_enclosures() {
+		$links = $this->elem->getElementsByTagName("link");
+
+		$encs = array();
+
+		foreach ($links as $link) {
+			if ($link && $link->hasAttribute("href") && $link->hasAttribute("rel")) {
+				if ($link->getAttribute("rel") == "enclosure") {
+					$enc = new FeedEnclosure();
+
+					$enc->type = $link->getAttribute("type");
+					$enc->link = $link->getAttribute("href");
+					$enc->length = $link->getAttribute("length");
+
+					array_push($encs, $enc);
+				}
+			}
+		}
+
+		return $encs;
+	}
+
+	function get_author() {
+		$author = $this->elem->getElementsByTagName("author")->item(0);
+
+		if ($author) {
+			$name = $author->getElementsByTagName("name")->item(0);
+
+			if ($name) return $name->nodeValue;
+
+			$email = $author->getElementsByTagName("email")->item(0);
+
+			if ($email) return $email->nodeValue;
+
+		}
+	}
+}
+?>
diff --git a/classes/feedparser.php b/classes/feedparser.php
new file mode 100644
index 000000000..274e871b9
--- /dev/null
+++ b/classes/feedparser.php
@@ -0,0 +1,101 @@
+<?php
+class FeedParser {
+	private $doc;
+	private $error;
+	private $items;
+	private $link;
+	private $title;
+	private $type;
+
+	const FEED_RDF = 0;
+	const FEED_RSS = 1;
+	const FEED_ATOM = 2;
+
+	function __construct($data) {
+		libxml_use_internal_errors(true);
+		libxml_clear_errors();
+		$this->doc = new DOMDocument();
+		$this->doc->loadXML($data);
+		$this->error = $this->format_error(libxml_get_last_error());
+		libxml_clear_errors();
+
+		$this->items = array();
+	}
+
+	function init() {
+		$root = $this->doc->firstChild;
+
+		if ($root) {
+			switch ($root->tagName) {
+			case "rss":
+				$this->type = $this::FEED_RSS;
+				break;
+			case "feed":
+				$this->type = $this::FEED_ATOM;
+				break;
+			default:
+				$this->error = "Unknown/unsupported feed type";
+				return;
+			}
+
+			$xpath = new DOMXPath($this->doc);
+
+			switch ($this->type) {
+			case $this::FEED_ATOM:
+				$xpath->registerNamespace('atom', 'http://www.w3.org/2005/Atom');
+
+				$title = $xpath->query("//atom:feed/atom:title")->item(0);
+
+				if ($title) {
+					$this->title = $title->nodeValue;
+				}
+
+				$link = $xpath->query("//atom:feed/atom:link[not(@rel)]")->item(0);
+
+				if ($link && $link->hasAttributes()) {
+					$this->link = $link->getAttribute("href");
+				}
+
+				$articles = $xpath->query("//atom:entry");
+
+				foreach ($articles as $article) {
+					array_push($this->items, new FeedItem_Atom($article));
+				}
+
+				break;
+			case $this::FEED_RDF:
+
+				break;
+			case $this::FEED_RSS:
+				break;
+			}
+		}
+	}
+
+	function format_error($error) {
+		if ($error) {
+			return sprintf("LibXML error %s at line %d (column %d): %s",
+				$error->code, $error->line, $error->column,
+				$error->message);
+		} else {
+			return "";
+		}
+	}
+
+	function error() {
+		return $this->error;
+	}
+
+	function get_link() {
+		return $this->link;
+	}
+
+	function get_title() {
+		return $this->title;
+	}
+
+	function get_items() {
+		return $this->items;
+	}
+
+} ?>
-- 
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