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authorGurmeen Bindra <gurmeen.bindra@isode.com>2012-04-17 09:29:05 (GMT)
committerKevin Smith <git@kismith.co.uk>2012-04-19 10:45:53 (GMT)
commitd9d9451156ee8a4315de30571131d114af205fa1 (patch)
tree24d0dfb36be867651c39ff6898c944ed035e7f5b /src/com/isode/stroke/parser/tree
parentb54bc5406f95902ce2438ac64a19390ae0f2f409 (diff)
downloadstroke-d9d9451156ee8a4315de30571131d114af205fa1.zip
stroke-d9d9451156ee8a4315de30571131d114af205fa1.tar.bz2
Port MUC Payload Parsers from Swiften to Stroke
This patch ports the MUC Payload parsers from swiften to stroke. Test-information: ported junits work fine
Diffstat (limited to 'src/com/isode/stroke/parser/tree')
-rw-r--r--src/com/isode/stroke/parser/tree/NullParserElement.java29
-rw-r--r--src/com/isode/stroke/parser/tree/ParserElement.java128
-rw-r--r--src/com/isode/stroke/parser/tree/TreeReparser.java65
3 files changed, 222 insertions, 0 deletions
diff --git a/src/com/isode/stroke/parser/tree/NullParserElement.java b/src/com/isode/stroke/parser/tree/NullParserElement.java
new file mode 100644
index 0000000..83f8b6f
--- /dev/null
+++ b/src/com/isode/stroke/parser/tree/NullParserElement.java
@@ -0,0 +1,29 @@
+/*
+ * Copyright (c) 2012, Isode Limited, London, England.
+ * All rights reserved.
+ */
+/*
+ * Copyright (c) 2011, Kevin Smith
+ * All rights reserved.
+ */
+package com.isode.stroke.parser.tree;
+
+import com.isode.stroke.parser.AttributeMap;
+
+/**
+ * Class representing a Null Parser element
+ *
+ */
+public class NullParserElement extends ParserElement{
+ /**
+ * Create the object
+ */
+ public NullParserElement() {
+ super("", "", new AttributeMap());
+ }
+
+ /**
+ * Empty/Null Parser element
+ */
+ public static NullParserElement element = new NullParserElement();
+}
diff --git a/src/com/isode/stroke/parser/tree/ParserElement.java b/src/com/isode/stroke/parser/tree/ParserElement.java
new file mode 100644
index 0000000..1a43696
--- /dev/null
+++ b/src/com/isode/stroke/parser/tree/ParserElement.java
@@ -0,0 +1,128 @@
+/*
+ * Copyright (c) 2012, Isode Limited, London, England.
+ * All rights reserved.
+ */
+/*
+ * Copyright (c) 2011, Kevin Smith
+ * All rights reserved.
+ */
+package com.isode.stroke.parser.tree;
+
+import java.util.Vector;
+import com.isode.stroke.parser.AttributeMap;
+
+/**
+ * Class representing a parser for nodes in the stanza
+ *
+ */
+public class ParserElement {
+ private Vector<ParserElement> children_ = new Vector<ParserElement>();
+ private String name_ = "";
+ private String xmlns_ ="";
+ private AttributeMap attributes_ = new AttributeMap();
+ private String text_ = "";
+
+ /**
+ * Create the parser.
+ * @param name name of the parser node, e.g. query, reason, not null
+ * @param xmlns XML namespace, e.g. http://jabber.org/protocol/muc#user, not null
+ * @param attributes attributes of the node, not null
+ */
+ public ParserElement(String name, String xmlns, AttributeMap attributes){
+ this.name_ = name;
+ this.xmlns_ = xmlns;
+ this.attributes_ = attributes;
+ }
+
+ /**
+ * Get the text data of the node
+ * @return not null, can be empty
+ */
+ public String getText() {
+ return text_;
+ }
+
+ /**
+ * Get the name of the node, not null
+ * @return name of node
+ */
+ public String getName() {
+ return name_;
+ }
+
+ /**
+ * Get the name space of the XML node, not null
+ * @return xml namespace
+ */
+ public String getNamespace() {
+ return xmlns_;
+ }
+
+ /**
+ * Get the attributes of the XML node
+ * @return XMP node attributes, not null
+ */
+ public AttributeMap getAttributes() {
+ return attributes_;
+ }
+
+ /**
+ * Add child of the XML node
+ * @param name name of child node, not null
+ * @param xmlns XML namespace, not null
+ * @param attributes attributes, not null
+ * @return child node, not null
+ */
+ public ParserElement addChild(String name, String xmlns, AttributeMap attributes){
+ ParserElement child = new ParserElement(name, xmlns, attributes);
+ children_.add(child);
+ return child;
+ }
+
+ /**
+ * Append data to the text of the node
+ * @param data data to be appended, not null
+ */
+ public void appendCharacterData(String data) {
+ text_ += data;
+ }
+
+ /**
+ * Get the children of the node which have the given name
+ * and namespace value
+ * @param name name of node, not null
+ * @param xmlns namespace of node, not null
+ * @return list of children, not null but can be empty
+ */
+ public Vector<ParserElement> getChildren(String name, String xmlns) {
+ Vector<ParserElement> result = new Vector<ParserElement>();
+ for(ParserElement child : children_) {
+ if(child.name_.equals(name) && child.xmlns_.equals(xmlns)) {
+ result.add(child);
+ }
+ }
+ return result;
+ }
+
+ /**
+ * Get all the child nodes of XML element
+ * @return list of all children, not null but can be empty
+ */
+ public Vector<ParserElement> getAllChildren() {
+ return children_;
+ }
+
+ /**
+ * Get the first child of the node which have the given name
+ * and namespace value
+ * @param name name of node, not null
+ * @param xmlns namespace of node, not null
+ * @return child node if exists or a parser element {@link NullParserElement}
+ * representing null value
+ */
+ public ParserElement getChild(String name, String xmlns) {
+ Vector<ParserElement> results = getChildren(name, xmlns);
+ ParserElement result = results.isEmpty() ? NullParserElement.element : results.get(0);
+ return result;
+ }
+}
diff --git a/src/com/isode/stroke/parser/tree/TreeReparser.java b/src/com/isode/stroke/parser/tree/TreeReparser.java
new file mode 100644
index 0000000..647ab9e
--- /dev/null
+++ b/src/com/isode/stroke/parser/tree/TreeReparser.java
@@ -0,0 +1,65 @@
+/*
+ * Copyright (c) 2012, Isode Limited, London, England.
+ * All rights reserved.
+ */
+/*
+ * Copyright (c) 2011, Kevin Smith
+ * All rights reserved.
+ */
+package com.isode.stroke.parser.tree;
+
+import java.util.LinkedList;
+
+import com.isode.stroke.elements.Payload;
+import com.isode.stroke.parser.PayloadParser;
+import com.isode.stroke.parser.PayloadParserFactoryCollection;
+
+/**
+ * Class for parsing elements of a parser element
+ *
+ */
+public class TreeReparser {
+ /**
+ * Class representing an element and its handling state
+ *
+ */
+ private static class ElementState {
+ ParserElement pe;
+ boolean state;
+ public ElementState(ParserElement pe, boolean state) {
+ super();
+ this.pe = pe;
+ this.state = state;
+ }
+ }
+
+ /**
+ * Parse the elements under the given root node
+ * @param root root node, not null
+ * @param collection payload parser factories, not null
+ * @return payload created from the elements of the given node, not null
+ */
+ public static Payload parseTree(ParserElement root, PayloadParserFactoryCollection collection) {
+ PayloadParser parser = collection.getPayloadParserFactory(root.getName(), root.getNamespace(),
+ root.getAttributes()).createPayloadParser();
+ LinkedList<ElementState> stack = new LinkedList<ElementState>();
+ stack.addLast(new ElementState(root, true));
+ while (!stack.isEmpty()) {
+ ElementState current = stack.getLast();
+ stack.removeLast();
+ if (current.state) {
+ stack.addLast(new ElementState(current.pe, false));
+ parser.handleStartElement(current.pe.getName(), current.pe.getNamespace(), current.pe.getAttributes());
+ for(ParserElement child : current.pe.getAllChildren()) {
+ stack.addLast(new ElementState(child, true));
+ }
+ } else {
+ parser.handleCharacterData(current.pe.getText());
+ parser.handleEndElement(current.pe.getName(), current.pe.getNamespace());
+ }
+ }
+
+ Payload payload = parser.getPayload();
+ return payload;
+ }
+}