public Header parseHeader()

in dom/src/main/java/org/apache/james/mime4j/message/DefaultMessageBuilder.java [261:292]

32 lines of code
8 McCabe index (conditional complexity)


    public Header parseHeader(final InputStream is) throws IOException, MimeIOException {
        final MimeConfig cfg = config != null ? config : MimeConfig.DEFAULT;
        boolean strict = cfg.isStrictParsing();
        final DecodeMonitor mon = monitor != null ? monitor :
            strict ? DecodeMonitor.STRICT : DecodeMonitor.SILENT;
        final FieldParser<? extends ParsedField> fp = fieldParser != null ? fieldParser :
            strict ? DefaultFieldParser.getParser() : LenientFieldParser.getParser();
        final HeaderImpl header = new HeaderImpl();
        final MimeStreamParser parser = new MimeStreamParser(cfg, mon, null);
        parser.setContentHandler(new AbstractContentHandler() {
            @Override
            public void endHeader() {
                parser.stop();
            }
            @Override
            public void field(Field field) throws MimeException {
                ParsedField parsedField;
                if (field instanceof ParsedField) {
                    parsedField = (ParsedField) field;
                } else {
                    parsedField = fp.parse(field, mon);
                }
                header.addField(parsedField);
            }
        });
        try {
            parser.parse(is);
        } catch (MimeException ex) {
            throw new MimeIOException(ex);
        }
        return header;
    }