private boolean matchBufferInMailBeingMimeAware()

in james-utils/src/main/java/org/apache/james/mime4j/utils/search/MessageMatcher.java [147:193]
46 lines of code
24 McCabe index (conditional complexity)

    private boolean matchBufferInMailBeingMimeAware(final InputStream input, final CharBuffer buffer) throws IOException, MimeException {
        try {
            MimeConfig config = MimeConfig.custom().setMaxLineLen(-1).setMaxHeaderLen(-1).build();

            MimeTokenStream parser = new MimeTokenStream(config);
            parser.parse(input);
            while (parser.next() != EntityState.T_END_OF_STREAM) {
                final EntityState state = parser.getState();
                switch (state) {
                    case T_PREAMBLE:
                    case T_EPILOGUE:
                    case T_BODY:
                        if (contentTypes.isEmpty() || contentTypes.contains(parser.getBodyDescriptor().getMimeType())) {
                            if (checkBody(buffer, parser)) {
                                return true;
                            }
                        }
                        break;
                    case T_FIELD:
                        if (includeHeaders) {
                            if (checkHeader(buffer, parser)) {
                                return true;
                            }
                        }
                        break;
                case T_END_BODYPART:
                case T_END_HEADER:
                case T_END_MESSAGE:
                case T_END_MULTIPART:
                case T_END_OF_STREAM:
                case T_RAW_ENTITY:
                case T_START_BODYPART:
                case T_START_HEADER:
                case T_START_MESSAGE:
                case T_START_MULTIPART:
                    break;
                }
            }
        } catch (IllegalCharsetNameException e) {
            handle(e);
        } catch (UnsupportedCharsetException e) {
            handle(e);
        } catch (IllegalStateException e) {
            handle(e);
        }
        return false;
    }