/**
* Parse a repository document.
*
* @param url
* @throws IOException
* @throws XmlPullParserException
* @throws Exception
*/
void parseDocument(URL url) throws IOException, XmlPullParserException, Exception {
if (!visited.contains(url)) {
visited.add(url);
try {
System.out.println("Visiting: " + url);
InputStream in = null;
if (url.getPath().endsWith(".zip")) {
ZipInputStream zin = new ZipInputStream(url.openStream());
ZipEntry entry = zin.getNextEntry();
while (entry != null) {
if (entry.getName().equals("repository.xml")) {
in = zin;
break;
}
entry = zin.getNextEntry();
}
} else {
in = url.openStream();
}
Reader reader = new InputStreamReader(in);
XmlPullParser parser = new KXmlParser();
parser.setInput(reader);
parseRepository(parser);
} catch (MalformedURLException e) {
System.out.println("Cannot create connection to url");
}
}
}
private Tweets parse(XmlPullParser aParser) throws Exception {
tweets = new Tweets();
int _e = aParser.next();
while (_e != XmlPullParser.END_DOCUMENT) {
if (_e == XmlPullParser.START_TAG) {
startTag(aParser.getPrefix(), aParser.getName(), aParser);
}
_e = aParser.next();
}
return tweets;
}
/**
* We have a referral to another repository. Just create another parser and read it inline.
*
* @param parser
*/
void referral(XmlPullParser parser) {
// TODO handle depth!
try {
parser.require(XmlPullParser.START_TAG, null, "referral");
// String depth = parser.getAttributeValue(null, "depth");
String path = parser.getAttributeValue(null, "url");
URL url = new URL(this.url, path);
parseDocument(url);
parser.next();
parser.require(XmlPullParser.END_TAG, null, "referral");
} catch (Exception e) {
e.printStackTrace();
}
}
/**
* Parse start of element from document. Ignores character data to next start or end tag, but
* throws exception if an end tag is seen before a start tag, or if the start tag seen does not
* match the expected name.
*
* @param tag element name expected
* @throws IOException if error reading document
* @throws XmlPullParserException if expected element not found, or if other parse error
*/
protected void parseStartTag(String tag) throws IOException, XmlPullParserException {
while (true) {
switch (m_parser.next()) {
case XmlPullParser.START_TAG:
m_parser.readStartTag(m_startTag);
if (m_startTag.getLocalName().equals(tag)) {
return;
}
// fall through for error handling
case XmlPullParser.END_TAG:
case XmlPullParser.END_DOCUMENT:
throw new XmlPullParserException("Missing expected start tag " + tag);
}
}
}
/**
* Parse end of element from document. Collects character data to the end tag and returns it with
* whitespace stripped. Throws an exception if a start tag is seen before an end tag, or if the
* end tag seen does not match the expected name.
*
* @param tag element name expected
* @return content text with whitespace stripped
* @throws IOException if error reading document
* @throws XmlPullParserException if expected element not found, or if other parse error
*/
protected String parseEndTag(String tag) throws IOException, XmlPullParserException {
m_buffer.setLength(0);
while (true) {
switch (m_parser.next()) {
case XmlPullParser.CONTENT:
m_buffer.append(m_parser.readContent());
break;
case XmlPullParser.END_TAG:
m_parser.readEndTag(m_endTag);
if (m_endTag.getLocalName().equals(tag)) {
return m_buffer.toString().trim();
}
// fall through for error handling
case XmlPullParser.START_TAG:
case XmlPullParser.END_DOCUMENT:
throw new XmlPullParserException("Missing expected end tag " + tag);
}
}
}
/**
* Parse and process trade history information stream.
*
* @param in XML document reader
* @throws IOException if error reading document
* @throws XmlPullParserException on document parse error
*/
public void parse(Reader in) throws IOException, XmlPullParserException {
// set document source for parse
m_parser.reset();
m_parser.setInput(in);
// main pull parsing loop
byte type;
while ((type = m_parser.next()) != XmlPullParser.END_DOCUMENT) {
// ignore everything other than a start tag
if (type == XmlPullParser.START_TAG) {
// process the start tags we're interested in
m_parser.readStartTag(m_startTag);
String lname = m_startTag.getLocalName();
if (lname.equals(STOCK_ELEMENT_NAME)) {
parseStockTrade();
} else if (lname.equals(OPTION_ELEMENT_NAME)) {
parseOptionTrade();
}
}
}
}
private void startTag(String aPrefix, String aName, XmlPullParser aParser) throws Exception {
if ("entry".equals(aName)) {
tweets.addTweet(currentTweet = new Tweet());
} else if ("published".equals(aName)) {
aParser.next();
currentTweet.setPublished(dateFormat.parse(aParser.getText()));
} else if (("title".equals(aName)) && (currentTweet != null)) {
aParser.next();
currentTweet.setTitle(aParser.getText());
} else if ("content".equals(aName)) {
Content _c = new Content();
_c.setType(aParser.getAttributeValue(null, "type"));
aParser.next();
_c.setValue(aParser.getText());
currentTweet.setContent(_c);
} else if ("lang".equals(aName)) {
aParser.next();
currentTweet.setLanguage(aParser.getText());
} else if ("author".equals(aName)) {
currentTweet.setAuthor(currentAuthor = new Author());
} else if ("name".equals(aName)) {
aParser.next();
currentAuthor.setName(aParser.getText());
} else if ("uri".equals(aName)) {
aParser.next();
currentAuthor.setUri(aParser.getText());
}
}
@Override
public Tweets read(InputStream anInputStream) throws Exception {
XmlPullParser _p = f.newPullParser();
_p.setInput(anInputStream, "utf-8");
return parse(_p);
}
public Object readInstance(
XmlPullParser parser, String namespace, String name, PropertyInfo expected)
throws IOException, XmlPullParserException {
return IsoDate.stringToDate(parser.nextText(), IsoDate.DATE_TIME);
}
/**
* Parse the repository.
*
* @param parser
* @throws Exception
*/
private void parseRepository(XmlPullParser parser) throws Exception {
try {
parser.require(XmlPullParser.START_DOCUMENT, null, null);
parser.nextTag();
if (parser.getName().equals("bundles")) parseOscar(parser);
else {
parser.require(XmlPullParser.START_TAG, null, "repository");
date = parser.getAttributeValue(null, "lastmodified");
name = parser.getAttributeValue(null, "name");
if (name == null) name = "Untitled";
while (parser.nextTag() == XmlPullParser.START_TAG) {
if (parser.getName().equals("resource")) {
ResourceImpl resource = new ResourceImpl(this, parser);
resources.add(resource);
} else if (parser.getName().equals("referral")) referral(parser);
else
throw new IllegalArgumentException(
"Invalid tag in repository: " + url + " " + parser.getName());
}
parser.require(XmlPullParser.END_TAG, null, "repository");
}
} catch (XmlPullParserException e) {
e.printStackTrace();
throw new IllegalArgumentException(
"XML unregognized around: " + e.getLineNumber() + " " + e.getMessage());
}
}
/** * Parse an old style OBR repository. * * <p><dtd-version>1.0</dtd-version> <repository> <name>Oscar Bundle Repository</name> * <url>http://oscar-osgi.sourceforge.net/</url> <date>Fri May 07 16:45:07 CEST 2004</date> * <extern-repositories> * <!-- * Stefano Lenzi ([email protected]) --> * <url>http://domoware.isti.cnr.it/osgi-obr/niche-osgi-obr.xml</url> * <!--Manuel Palencia ([email protected]) --> * <!-- * <url>http://jmood.forge.os4os.org/repository.xml</url> --> * <!-- Enrique * Rodriguez ([email protected]) --> * <url>http://update.cainenable.org/repository.xml</url> </extern-repositories> </repository> * <bundle> <bundle-name>Bundle Repository</bundle-name> <bundle-description> A bundle repository * service for Oscar. </bundle-description> <bundle-updatelocation> * http://oscar-osgi.sf.net/repo/bundlerepository/bundlerepository.jar </bundle-updatelocation> * <bundle-sourceurl> http://oscar-osgi.sf.net/repo/bundlerepository/bundlerepository-src.jar * </bundle-sourceurl> <bundle-version>1.1.3</bundle-version> <bundle-docurl> * http://oscar-osgi.sf.net/repo/bundlerepository/ </bundle-docurl> * <bundle-category>General</bundle-category> <import-package package="org.osgi.framework"/> * <export-package package="org.ungoverned.osgi.service.bundlerepository" * specification-version="1.1.0"/> </bundle> * */ private void parseOscar(XmlPullParser parser) throws Exception { parser.require(XmlPullParser.START_TAG, null, "bundles"); while (true) { int event = parser.next(); // Error .. if (event == XmlPullParser.TEXT) event = parser.next(); if (event != XmlPullParser.START_TAG) break; ResourceImpl resource = new ResourceImpl(this); if (parser.getName().equals("bundle")) { while (parser.nextTag() == XmlPullParser.START_TAG) { String key = parser.getName(); if (key.equals("import-package")) { RequirementImpl requirement = new RequirementImpl("package"); requirement.setOptional(false); requirement.setMultiple(false); String p = parser.getAttributeValue(null, "package"); StringBuffer sb = new StringBuffer(); sb.append("(&(package="); sb.append(p); sb.append(")"); String version = parser.getAttributeValue(null, "specification-version"); VersionRange v = new VersionRange("0"); if (version != null) { sb.append("(version="); sb.append(v = new VersionRange(version)); sb.append(")"); } sb.append(")"); requirement.setFilter(sb.toString()); requirement.setComment("Import-Package: " + p + ";" + v); resource.addRequirement(requirement); parser.nextTag(); } else if (key.equals("export-package")) { CapabilityImpl capability = new CapabilityImpl("package"); capability.addProperty("package", parser.getAttributeValue(null, "package")); String version = parser.getAttributeValue(null, "specification-version"); if (version != null) { capability.addProperty("version", new VersionRange(version)); } resource.addCapability(capability); parser.nextTag(); } else { String value = parser.nextText().trim(); if (key.equals("bundle-sourceurl")) resource.setSource(new URL(value)); else if (key.equals("bundle-docurl")) resource.setDocumentation(new URL(value)); else if (key.equals("bundle-updatelocation")) resource.setURL(new URL(value)); else if (key.equals("bundle-description")) resource.setDescription(value); else if (key.equals("bundle-category")) resource.addCategory(value); else if (key.equals("bundle-name")) { resource.setName(value); resource.setPresentationName(value); } else if (key.equals("bundle-version")) resource.setVersion(new VersionRange(value)); else { resource.put(key, value); } } } resources.add(resource); parser.require(XmlPullParser.END_TAG, null, "bundle"); } else if (parser.getName().equals("repository")) { parser.require(XmlPullParser.START_TAG, null, "repository"); while (parser.nextTag() == XmlPullParser.START_TAG) { String tag = parser.getName(); if (tag.equals("name")) { String name = parser.nextText(); if (this.name == null) this.name = name.trim(); } else if (tag.equals("url")) parser.nextText().trim(); else if (tag.equals("date")) parser.nextText().trim(); else if (tag.equals("extern-repositories")) { parser.require(XmlPullParser.START_TAG, null, "extern-repositories"); while (parser.nextTag() == XmlPullParser.START_TAG) { if (parser.getName().equals("url")) parseDocument(new URL(parser.nextText().trim())); else throw new IllegalArgumentException( "Invalid tag in repository while parsing extern repositories: " + url + " " + parser.getName()); } parser.require(XmlPullParser.END_TAG, null, "extern-repositories"); } else throw new IllegalArgumentException( "Invalid tag in repository: " + url + " " + parser.getName()); } parser.require(XmlPullParser.END_TAG, null, "repository"); } else if (parser.getName().equals("dtd-version")) { parser.nextText(); } else throw new IllegalArgumentException( "Invalid tag in repository: " + url + " " + parser.getName()); } parser.require(XmlPullParser.END_TAG, null, "bundles"); }
/**
* Retrieve DiscoverInfo for a specific node.
*
* @param caps the <tt>Caps</tt> i.e. the node, the hash and the ver
* @return The corresponding DiscoverInfo or null if none is known.
*/
public static DiscoverInfo getDiscoverInfoByCaps(Caps caps) {
synchronized (caps2discoverInfo) {
DiscoverInfo discoverInfo = caps2discoverInfo.get(caps);
/*
* If we don't have the discoverInfo in the runtime cache yet, we
* may have it remembered in a previous application instance.
*/
if (discoverInfo == null) {
ConfigurationService configurationService = getConfigService();
String capsPropertyName = getCapsPropertyName(caps);
String xml = configurationService.getString(capsPropertyName);
if ((xml != null) && (xml.length() != 0)) {
IQProvider discoverInfoProvider =
(IQProvider)
ProviderManager.getInstance()
.getIQProvider("query", "http://jabber.org/protocol/disco#info");
if (discoverInfoProvider != null) {
XmlPullParser parser = new MXParser();
try {
parser.setFeature(XmlPullParser.FEATURE_PROCESS_NAMESPACES, true);
parser.setInput(new StringReader(xml));
// Start the parser.
parser.next();
} catch (XmlPullParserException xppex) {
parser = null;
} catch (IOException ioex) {
parser = null;
}
if (parser != null) {
try {
discoverInfo = (DiscoverInfo) discoverInfoProvider.parseIQ(parser);
} catch (Exception ex) {
}
if (discoverInfo != null) {
if (caps.isValid(discoverInfo)) caps2discoverInfo.put(caps, discoverInfo);
else {
logger.error(
"Invalid DiscoverInfo for " + caps.getNodeVer() + ": " + discoverInfo);
/*
* The discoverInfo doesn't seem valid
* according to the caps which means that we
* must have stored invalid information.
* Delete the invalid information in order
* to not try to validate it again.
*/
configurationService.removeProperty(capsPropertyName);
}
}
}
}
}
}
return discoverInfo;
}
}
