Package org.exist.xquery.parser

Examples of org.exist.xquery.parser.DeclScanner


     * @return QName describing the module namespace or null if the source is not
     * a module.
     */
    protected final static QName getModuleDecl(InputStream is) {
        final XQueryLexer lexer = new XQueryLexer(null, new InputStreamReader(is));
        final DeclScanner scanner = new DeclScanner(lexer);
        try {
            scanner.versionDecl();
        } catch (final RecognitionException e) {
            //Nothing to do
        } catch (final TokenStreamException e) {
            //Nothing to do
        } catch (final XPathException e) {
            //Nothing to do
        }
        if (scanner.getNamespace() != null) {
            return new QName(scanner.getPrefix(), scanner.getNamespace());
        }
        return null;
    }
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     * @param is
     * @return The guessed encoding.
     */
    protected final static String guessXQueryEncoding(InputStream is) {
        final XQueryLexer lexer = new XQueryLexer(null, new InputStreamReader(is));
        final DeclScanner scanner = new DeclScanner(lexer);
        try {
            scanner.versionDecl();
        } catch (final RecognitionException e) {
            //Nothing to do
        } catch (final TokenStreamException e) {
            //Nothing to do
        } catch (final XPathException e) {
            //Nothing to do
        }
        return scanner.getEncoding();
    }
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