/**
* Evaluates the expression as an string.
*
* @param node the current node
* @param env the variable environment.
* @return the string representation of the expression.
*/
public String evalString(Node node, ExprEnvironment env) throws XPathException {
String rel = _relExpr.evalString(node, env);
if (rel.startsWith("/") || rel.indexOf(':') > 0 && rel.indexOf(':') < '/') return rel;
String base;
if (_baseExpr != null) base = _baseExpr.evalString(node, env);
else base = QAbstractNode.baseURI(node);
int last = base.lastIndexOf('/');
if (last < 0) return rel;
else return base.substring(0, last + 1) + rel;
}
/**
* Generates a compiled stylesheet from a parsed XSL document.
*
* @param xsl the parsed xsl document.
* @param path the path to the document.
*/
Templates generate(Node xsl, Path path) throws TransformerConfigurationException {
log.fine("Generating XSL from " + path);
// The code generation needs a static lock because the
// application might have a separate factory object
// for each thread. The static lock protects the code generation
// from overwriting its own code.
synchronized (AbstractStylesheetFactory.class) {
Generator gen = null;
try {
if (path == null && xsl != null) {
Document doc = xsl.getOwnerDocument();
if (doc == null && xsl instanceof Document) doc = (Document) xsl;
DocumentType dtd = doc.getDoctype();
String systemId = null;
if (dtd != null) systemId = dtd.getSystemId();
if (systemId != null) path = getStylePath().lookup(systemId);
}
if (path == null && xsl instanceof CauchoNode) {
String filename = ((CauchoNode) xsl).getFilename();
if (filename != null) path = getStylePath().lookup(filename);
}
if (path == null) path = getStylePath().lookup("anonymous.xsl");
Path stylePath = path.getParent();
Expr expr = XPath.parseExpr("//xtp:directive.page/@language");
String language = expr.evalString(xsl);
String userName = path.getUserPath();
String mangledName = getMangledName(userName);
String encoding = XPath.evalString("//xsl:output/@encoding", xsl);
if (encoding != null && encoding.equals("")) encoding = null;
if (language == null || language.equals("") || language.equals("java")) {
language = "java";
gen = new JavaGenerator(this, mangledName, encoding);
} else throw new XslParseException(L.l("unsupported language `{0}'", language));
gen.setPath(path);
Iterator iter = XPath.select("//xtp:directive.page/@*", xsl);
while (iter.hasNext()) {
Attr attr = (Attr) iter.next();
String name = attr.getNodeName();
String value = attr.getNodeValue();
if (name.equals("errorPage")) gen.setErrorPage(value);
else if (name.equals("import")) gen.addImport(value);
else if (name.equals("contentType")) gen.setContentType(value);
else if (name.equals("language")) {
if (!language.equalsIgnoreCase(value))
throw new XslParseException(L.l("mismatched language `{0}'", value));
} else if (name.equals("xml:space")) {
} else throw new XslParseException(L.l("unknown directive `{0}'", name));
}
StylesheetImpl stylesheet = gen.generate(xsl);
gen = null;
stylesheet.init(path);
// XXX: why was this here? stylesheet.init(getStylePath());
stylesheet.setURIResolver(_uriResolver);
return stylesheet;
} catch (TransformerConfigurationException e) {
throw e;
} catch (Exception e) {
throw new XslParseException(e);
} finally {
try {
if (gen != null) gen.close();
} catch (IOException e) {
}
}
}
}