/**
* Get version for the specified Firefox extension ID
*
* @param extensionID
* @param profileDir
* @return
*/
public static String getExtensionVersion(String extensionID, IPath profileDir) {
try {
IPath dir = profileDir.append("extensions").append(extensionID); // $NON-NLS-1$
InputStream rdfInputStream = null;
if (dir.toFile().isFile()) {
dir = Path.fromOSString(IOUtil.read(new FileInputStream(dir.toFile())));
}
if (dir.toFile().isDirectory()) {
File installRdf = dir.append("install.rdf").toFile(); // $NON-NLS-1$
if (installRdf.exists()) {
rdfInputStream = new FileInputStream(installRdf);
}
} else if (dir.addFileExtension("xpi").toFile().isFile()) // $NON-NLS-1$
{
rdfInputStream =
ZipUtil.openEntry(
dir.addFileExtension("xpi").toFile(), // $NON-NLS-1$
Path.fromPortableString("install.rdf")); // $NON-NLS-1$
}
if (rdfInputStream != null) {
DocumentBuilderFactory factory = DocumentBuilderFactory.newInstance();
DocumentBuilder parser = factory.newDocumentBuilder();
Document document = parser.parse(rdfInputStream);
Node node = document.getDocumentElement().getFirstChild();
while (node != null) {
if ("description".equals(node.getNodeName().toLowerCase()) // $NON-NLS-1$
|| "rdf:description".equals(node.getNodeName().toLowerCase())) { // $NON-NLS-1$
NamedNodeMap attrs = node.getAttributes();
Node about = attrs.getNamedItem("about"); // $NON-NLS-1$
if (about == null) {
about = attrs.getNamedItem("RDF:about"); // $NON-NLS-1$
}
if (about != null) {
if ("urn:mozilla:install-manifest".equals(about.getNodeValue())) { // $NON-NLS-1$
break;
}
}
}
node = node.getNextSibling();
}
if (node != null) {
NamedNodeMap attrs = node.getAttributes();
Node version = attrs.getNamedItem("em:version"); // $NON-NLS-1$
if (version != null) {
return version.getNodeValue();
}
node = node.getFirstChild();
}
while (node != null) {
if ("em:version".equals(node.getNodeName().toLowerCase())) { // $NON-NLS-1$
break;
}
node = node.getNextSibling();
}
if (node != null) {
return node.getTextContent();
}
}
} catch (Exception e) {
IdeLog.logError(CorePlugin.getDefault(), e.getMessage(), e);
}
return null;
}
