Migrated source code from Simantics SVN

[simantics/platform.git] / bundles / org.simantics.utils / src / org / simantics / utils / xml / Node.java

diff --git a/bundles/org.simantics.utils/src/org/simantics/utils/xml/Node.java b/bundles/org.simantics.utils/src/org/simantics/utils/xml/Node.java
new file mode 100644 (file)
index 0000000..ed0d38e
--- /dev/null
+++ b/bundles/org.simantics.utils/src/org/simantics/utils/xml/Node.java
@@ -0,0 +1,145 @@
+/*******************************************************************************\r
+ * Copyright (c) 2007, 2010 Association for Decentralized Information Management\r
+ * in Industry THTH ry.\r
+ * All rights reserved. This program and the accompanying materials\r
+ * are made available under the terms of the Eclipse Public License v1.0\r
+ * which accompanies this distribution, and is available at\r
+ * http://www.eclipse.org/legal/epl-v10.html\r
+ *\r
+ * Contributors:\r
+ *     VTT Technical Research Centre of Finland - initial API and implementation\r
+ *******************************************************************************/\r
+package org.simantics.utils.xml;\r
+\r
+import java.io.File;\r
+import java.io.IOException;\r
+import java.util.Iterator;\r
+\r
+import javax.xml.parsers.DocumentBuilder;\r
+import javax.xml.parsers.DocumentBuilderFactory;\r
+import javax.xml.parsers.ParserConfigurationException;\r
+\r
+import org.w3c.dom.NodeList;\r
+import org.xml.sax.SAXException;\r
+\r
+\r
+public class Node implements Iterable<Node> {\r
+    public static final short ELEMENT_NODE              = org.w3c.dom.Node.ELEMENT_NODE;\r
+    public static final short ATTRIBUTE_NODE            = org.w3c.dom.Node.ATTRIBUTE_NODE;\r
+    public static final short TEXT_NODE                 = org.w3c.dom.Node.TEXT_NODE;\r
+    public static final short CDATA_SECTION_NODE        = org.w3c.dom.Node.CDATA_SECTION_NODE;\r
+    public static final short ENTITY_REFERENCE_NODE     = org.w3c.dom.Node.ENTITY_REFERENCE_NODE;\r
+    public static final short ENTITY_NODE               = org.w3c.dom.Node.ENTITY_NODE;\r
+    public static final short PROCESSING_INSTRUCTION_NODE = org.w3c.dom.Node.PROCESSING_INSTRUCTION_NODE;\r
+    public static final short COMMENT_NODE              = org.w3c.dom.Node.COMMENT_NODE;\r
+    public static final short DOCUMENT_NODE             = org.w3c.dom.Node.DOCUMENT_NODE;\r
+    public static final short DOCUMENT_TYPE_NODE        = org.w3c.dom.Node.DOCUMENT_TYPE_NODE;\r
+    public static final short DOCUMENT_FRAGMENT_NODE    = org.w3c.dom.Node.DOCUMENT_FRAGMENT_NODE;\r
+    public static final short NOTATION_NODE             = org.w3c.dom.Node.NOTATION_NODE;\r
+       \r
+       private org.w3c.dom.Node node;\r
+\r
+       public Node(org.w3c.dom.Node node) {\r
+               this.node = node;\r
+       }\r
+       \r
+       public Node(File file) throws IOException {\r
+               DocumentBuilderFactory factory = DocumentBuilderFactory.newInstance();\r
+               DocumentBuilder builder;\r
+               try {\r
+                       builder = factory.newDocumentBuilder();         \r
+                       node = builder.parse(file);\r
+               } catch (ParserConfigurationException e) {\r
+                       throw new IOException(e);\r
+               } catch (SAXException e) {\r
+                       throw new IOException(e);\r
+               }\r
+       }\r
+\r
+       static class NodeIterator implements Iterator<Node> {\r
+               NodeList list;          \r
+               int      i;\r
+               int      length;\r
+\r
+               public NodeIterator(NodeList list) {\r
+                       this.list = list;\r
+                       i = 0;\r
+                       length = list.getLength();\r
+               }\r
+\r
+               @Override\r
+               public boolean hasNext() {\r
+                       return i<length;\r
+               }\r
+\r
+               @Override\r
+               public Node next() {\r
+                       return new Node(list.item(i++));\r
+               }\r
+\r
+               @Override\r
+               public void remove() {\r
+                       throw new UnsupportedOperationException();\r
+               }               \r
+               \r
+       }\r
+       \r
+       @Override\r
+       public Iterator<Node> iterator() {\r
+               return new NodeIterator(node.getChildNodes());\r
+       }       \r
+       \r
+       public String name() {\r
+               return node.getNodeName();\r
+       }\r
+       \r
+       public String value() {\r
+               return node.getNodeValue().trim();              \r
+       }\r
+       \r
+       public int type() {\r
+               return node.getNodeType();\r
+       }\r
+       \r
+       public Node parent() {\r
+               return new Node(node.getParentNode());\r
+       }\r
+       \r
+       public Node get(String key) {\r
+               return new Node(node.getAttributes().getNamedItem(key));\r
+       }\r
+       \r
+       public String getValue(String key) {\r
+               return node.getAttributes().getNamedItem(key).getNodeValue().trim();            \r
+       }\r
+       \r
+       public int childCount() {\r
+               return node.getChildNodes().getLength();\r
+       }\r
+       \r
+       public String text() {\r
+               return node.getTextContent().trim();\r
+       }\r
+       \r
+       public Node getSingleChild(String type) {\r
+               NodeList nodeList = node.getChildNodes();\r
+               Node child = null;\r
+               for(int i=0;i<nodeList.getLength();++i) {\r
+                       org.w3c.dom.Node c = nodeList.item(i);\r
+                       if(c.getNodeName().equals(type)) {\r
+                               if(child == null)\r
+                                       child = new Node(c);\r
+                               else\r
+                                       System.out.println("Child of type " + type + " is not unique.");\r
+                       }\r
+               }\r
+               return child;\r
+       }\r
+       \r
+       @Override\r
+       public boolean equals(Object obj) {\r
+               return this == obj || (obj instanceof Node && node.equals(((Node)obj).node));\r
+       }\r
+       \r
+}\r
+\r