/**
* 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");
}
}
}
/**
* Adds <tt>listener</tt> to the list of {@link CapsVerListener}s that we notify when new features
* occur and the version hash needs to be regenerated. The method would also notify
* <tt>listener</tt> if our current caps version has been generated and is different than
* <tt>null</tt>.
*
* @param listener the {@link CapsVerListener} we'd like to register.
*/
public void addCapsVerListener(CapsVerListener listener) {
synchronized (capsVerListeners) {
if (capsVerListeners.contains(listener)) return;
capsVerListeners.add(listener);
if (currentCapsVersion != null) listener.capsVerUpdated(currentCapsVersion);
}
}
/**
* 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());
}
}
/**
* Refresh the repository from the URL.
*
* @throws Exception
*/
public boolean refresh() {
exception = null;
try {
resources.clear();
parseDocument(url);
visited = null;
return true;
} catch (Exception e) {
e.printStackTrace();
exception = e;
}
return false;
}
/** * 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"); }
/**
* Removes <tt>listener</tt> from the list of currently registered {@link CapsVerListener}s.
*
* @param listener the {@link CapsVerListener} we'd like to unregister.
*/
public void removeCapsVerListener(CapsVerListener listener) {
synchronized (capsVerListeners) {
capsVerListeners.remove(listener);
}
}