1 files changed, 74 insertions, 0 deletions
diff --git a/modules/atom/libraries/Atom_Base.php b/modules/atom/libraries/Atom_Base.php
new file mode 100644
index 00000000..62fdfea1
--- /dev/null
+++ b/modules/atom/libraries/Atom_Base.php
@@ -0,0 +1,74 @@
+<?php defined("SYSPATH") or die("No direct script access.");
+/**
+ * Gallery - a web based photo album viewer and editor
+ * Copyright (C) 2000-2008 Bharat Mediratta
+ *
+ * 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 2 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, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street - Fifth Floor, Boston, MA  02110-1301, USA.
+ */
+class Atom_Base_Core {
+  protected $dom;
+  protected $element;
+  protected $children = array();
+  protected $element_name;
+
+  function __construct($element_name, $dom=null) {
+    if ($dom) {
+      $this->dom = $dom;
+      $this->element = $dom->createElement($element_name);
+    } else {
+      $this->dom = new DOMDocument('1.0', 'utf-8');
+      $this->element = $this->dom->createElementNS("http://www.w3.org/2005/Atom", $element_name);
+    }
+    $this->dom->appendChild($this->element);
+    $this->element_name = $element_name;
+    return $this;
+  }
+
+  public function get_element() {
+    $this->add_children_to_base_element();
+    return $this->element;
+  }
+
+  public function as_xml() {
+    $this->add_children_to_base_element();
+    return $this->dom->saveXML();
+  }
+
+  public function as_json() {
+    $this->add_children_to_base_element();
+    /* Both Google and Yahoo generate their JSON from XML. We could do that, too. */
+    return null;
+  }
+
+  public function load_xml($xml) {
+    /* Load XML into our DOM. We can also validate against the RELAX NG schema from the Atom RFC. */
+  }
+
+  protected function add_child($element_type, $element_name) {
+    // @todo check if element_type is of Atom_Base; this can also be done with no magic
+    $element = new $element_type($element_name, $this->dom);
+    $this->children[$element_name][] = $element;
+    return end($this->children[$element_name]);
+  }
+
+  protected function add_children_to_base_element() {
+    foreach ($this->children as $element_type => $elements) {
+      $base_element = $this->dom->getElementsByTagName($this->element_name)->item(0);
+      foreach ($elements as $id => $element) {
+        $base_element->appendChild($element->get_element());
+      }
+    }
+  }
+}
+\ No newline at end of file