Author: j16sdiz
Date: 2009-03-02 15:16:38 +0000 (Mon, 02 Mar 2009)
New Revision: 25872
Added:
trunk/plugins/XMLLibrarian/MainIndexParser.java
Log:
[1/3] Factor out Index class - new parser for index.xml
This is part of the effort to support a new index format
which is smaller and more extensible.
This new parser is stricter then the previous version
and no longer support index site before Sept-2007
Added: trunk/plugins/XMLLibrarian/MainIndexParser.java
===================================================================
--- trunk/plugins/XMLLibrarian/MainIndexParser.java
(rev 0)
+++ trunk/plugins/XMLLibrarian/MainIndexParser.java 2009-03-02 15:16:38 UTC
(rev 25872)
@@ -0,0 +1,242 @@
+package plugins.XMLLibrarian;
+
+import java.util.HashMap;
+import java.util.HashSet;
+import java.util.Locale;
+import java.util.Map;
+import java.util.Set;
+
+import org.xml.sax.Attributes;
+import org.xml.sax.Locator;
+import org.xml.sax.SAXException;
+import org.xml.sax.helpers.DefaultHandler;
+
+/**
+ * Main Index Parser
+ *
+ * Parser for master index <tt>index.xml</tt>. This does _NOT_ support index
file generate by
+ * XMLSpider earlier then version 8 (Sep-2007).
+ *
+ * @author j16sdiz (1024D/75494252)
+ */
+public class MainIndexParser extends DefaultHandler {
+ protected enum V1State {
+ /** Anything else */
+ MAIN,
+ /** Inside <header> */
+ HEADER,
+ /** One-level inside <header>, such as <title> */
+ HEADER_INNER,
+ /** Inside <keywords> */
+ KEYWORDS
+ }
+
+ protected class V1Handler extends DefaultHandler {
+ V1State state;
+ String headerKey;
+ StringBuilder headerValue;
+
+ @Override
+ public void startDocument() {
+ state = V1State.MAIN;
+ headerKey = null;
+ headerValue = null;
+ }
+
+ @Override
+ public void characters(char ch[], int start, int length) throws
SAXException {
+ if (state != V1State.HEADER_INNER || headerKey == null)
+ return;
+ headerValue.append(ch, start, length);
+ }
+
+ @Override
+ public void startElement(String uri, String localName, String
qName, Attributes attributes) throws SAXException {
+ switch (state) {
+ case MAIN:
+ mainStartElement(uri, localName, qName,
attributes);
+ break;
+ case HEADER:
+ headerStartElement(uri, localName, qName,
attributes);
+ break;
+ case HEADER_INNER:
+ headerInnerStartElement(uri, localName, qName,
attributes);
+ break;
+ case KEYWORDS:
+ keywordsStartElement(uri, localName, qName,
attributes);
+ break;
+ }
+ }
+
+ private void mainStartElement(String uri, String localName,
String qName, Attributes attributes)
+ throws SAXException {
+ if ("main_index".equals(localName)) {
+ state = V1State.MAIN;
+ } else if ("header".equals(localName)) {
+ state = V1State.HEADER;
+ } else if ("keywords".equals(localName)) {
+ state = V1State.KEYWORDS;
+ } else if ("prefix".equals(localName)) {
+ // ignore
+ } else {
+ throw new SAXException("Bad tag <" + localName
+ "> in main @" + location());
+ }
+ }
+
+ private void headerStartElement(String uri, String localName,
String qName, Attributes attributes) {
+ headerKey = localName;
+ headerValue = new StringBuilder();
+ state = V1State.HEADER_INNER;
+ }
+
+ private void headerInnerStartElement(String uri, String
localName, String qName, Attributes attributes)
+ throws SAXException {
+ throw new SAXException("Bad tag <" + localName + "> in
header @" + location());
+ }
+
+ private void keywordsStartElement(String uri, String localName,
String qName, Attributes attributes)
+ throws SAXException {
+ if (!"subIndex".equals(localName))
+ new SAXException("Bad tag <" + localName + ">
in keywords @" + location());
+
+ String key = attributes.getValue("", "key");
+ if (key == null || key.length() < 1 || key.length() >
32 || !key.matches("^[0-9a-fA-F]*$"))
+ throw new SAXException("Bad <subIndex> tag @" +
location());
+ key = key.toLowerCase(Locale.US);
+ subIndice.add(key);
+ }
+
+ @Override
+ public void endElement(String uri, String localName, String
qName) throws SAXException {
+ switch (state) {
+ case MAIN:
+ mainEndElement(uri, localName, qName);
+ break;
+ case HEADER:
+ headerEndElement(uri, localName, qName);
+ break;
+ case HEADER_INNER:
+ headerInnerEndElement(uri, localName, qName);
+ break;
+ case KEYWORDS:
+ keywordsEndElement(uri, localName, qName);
+ break;
+ }
+ }
+
+ private void mainEndElement(String uri, String localName,
String qName) throws SAXException {
+ if (!"main_index".equals(localName) &&
!"prefix".equals(localName))
+ throw new SAXException("Bad close tag </" +
localName + "> in main @" + location());
+ }
+
+ private void headerEndElement(String uri, String localName,
String qName) throws SAXException {
+ if (!"header".equals(localName))
+ throw new SAXException("Bad close tag </" +
localName + "> in header @" + location());
+
+ state = V1State.MAIN;
+ }
+
+ private void headerInnerEndElement(String uri, String
localName, String qName) throws SAXException {
+ if (!localName.equals(headerKey))
+ throw new SAXException("Bad close tag </" +
localName + "> in header @" + location());
+ header.put(headerKey, headerValue.toString());
+ headerKey = null;
+ headerValue = null;
+
+ state = V1State.HEADER;
+ }
+
+ private void keywordsEndElement(String uri, String localName,
String qName) throws SAXException {
+ if ("subIndex".equals(localName)) {
+ // ignore
+ } else if ("keywords".equals(localName)) {
+ state = V1State.MAIN;
+ } else
+ throw new SAXException("Bad close tag </" +
localName + "> in keywords @" + location());
+ }
+ }
+
+ protected int version;
+ protected Map<String, String> header;
+ protected Set<String> subIndice;
+ protected Set<String> siteIndice;
+ protected DefaultHandler handler;
+ protected Locator locator;
+
+ @Override
+ public void characters(char ch[], int start, int length) throws
SAXException {
+ handler.characters(ch, start, length);
+ }
+
+ @Override
+ public void setDocumentLocator(Locator locator) {
+ this.locator = locator;
+ }
+
+ @Override
+ public void startDocument() {
+ header = new HashMap<String, String>();
+ subIndice = new HashSet<String>();
+ siteIndice = new HashSet<String>();
+ handler = null;
+ }
+
+ @Override
+ public void startElement(String uri, String localName, String qName,
Attributes attributes) throws SAXException {
+ if (handler == null) {
+ version = detectVersion(uri, localName, qName,
attributes);
+
+ switch (version) {
+ case 1:
+ handler = new V1Handler();
+ break;
+ default:
+ throw new SAXException("Unsupported version @("
+ location() + " : " + version);
+ }
+
+ handler.startDocument();
+ }
+ handler.startElement(uri, localName, qName, attributes);
+ }
+
+ @Override
+ public void endElement(String uri, String localName, String qName)
throws SAXException {
+ handler.endElement(uri, localName, qName);
+ }
+
+ @Override
+ public void endDocument() throws SAXException {
+ handler.endDocument();
+ }
+
+ private int detectVersion(String uri, String localName, String qName,
Attributes attributes) throws SAXException {
+ if ("main_index".equals(localName)) {
+ return 1;
+ } else {
+ throw new SAXException("Unknown tag @" + location() + "
: " + localName);
+ }
+ }
+
+ private String location() {
+ if (locator != null)
+ return "(" + locator.getLineNumber() + "," +
locator.getColumnNumber() + ")";
+ else
+ return "()";
+ }
+
+ public int getVersion() {
+ return version;
+ }
+
+ public String getHeader(String key) {
+ return header.get(key);
+ }
+
+ public Set<String> getSubIndice() {
+ return subIndice;
+ }
+
+ public Set<String> getSiteIndice() {
+ return siteIndice;
+ }
+}
Property changes on: trunk/plugins/XMLLibrarian/MainIndexParser.java
___________________________________________________________________
Added: svn:mime-type
+ text/x-java
Added: svn:keywords
+ Id
Added: svn:eol-style
+ native
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