Examples of org.apache.james.mime4j.stream.MimeTokenStream

org.apache.james.mime4j.stream.MimeTokenStream

Parses MIME (or RFC822) message streams of bytes or characters. The stream is converted into an event stream.

Typical usage:

 MimeTokenStream stream = new MimeTokenStream(); InputStream instream = new FileInputStream("mime.msg"); try { stream.parse(instream); for (int state = stream.getState(); state != MimeTokenStream.T_END_OF_STREAM; state = stream.next()) { switch (state) { case MimeTokenStream.T_BODY: System.out.println("Body detected, contents = " + stream.getInputStream() + ", header data = " + stream.getBodyDescriptor()); break; case MimeTokenStream.T_FIELD: System.out.println("Header field detected: " + stream.getField()); break; case MimeTokenStream.T_START_MULTIPART: System.out.println("Multipart message detexted," + " header data = " + stream.getBodyDescriptor()); ... } } } finally { instream.close(); }

Instances of {@link MimeTokenStream} are reusable: Invoking themethod {@link #parse(InputStream)} resets the token streams internalstate. However, they are definitely not thread safe. If you have a multi threaded application, then the suggested use is to have one instance per thread.

            filterIS = null;
        }
        
        MimeConfig config = new MimeConfig();
        config.setStrictParsing(true);
        parser = new MimeTokenStream(config);
        parser.setRecursionMode(RecursionMode.M_NO_RECURSE);
        parser.parseHeadless(is, contentTypeString);
        
        // Move the parser to the beginning of the first part
        while (parser.getState() != EntityState.T_START_BODYPART) {

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        void run(byte[] content, int repetitions) throws Exception;
    }


    private static final class MimeTokenStreamTest implements Test {
        public void run(byte[] content, int repetitions) throws Exception {
            MimeTokenStream stream = new MimeTokenStream();
            for (int i = 0; i < repetitions; i++) {
                stream.parse(new ByteArrayInputStream(content));
                for (EntityState state = stream.getState(); state != EntityState.T_END_OF_STREAM; state = stream
                        .next()) {
                }
            }
        }

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    public MimeStreamParser(
            final MimeConfig config,
            final DecodeMonitor monitor,
            final BodyDescriptorBuilder bodyDescBuilder) {
        this(new MimeTokenStream(config != null ? config.clone() : new MimeConfig(),
                monitor, bodyDescBuilder));
    }

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    public MimeStreamParser(final MimeConfig config) {
        this(config, null, null);
    }


    public MimeStreamParser() {
        this(new MimeTokenStream(new MimeConfig(), null, null));
    }

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    @Override
    protected void setUp() throws Exception {
        super.setUp();
        MimeConfig config = new MimeConfig();
        config.setStrictParsing(true);
        parser = new MimeTokenStream(config, new DefaultBodyDescriptorBuilder(null));
    }

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            filterIS = null;
        }
        
        MimeConfig config = new MimeConfig();
        config.setStrictParsing(true);
        parser = new MimeTokenStream(config);
        parser.setRecursionMode(RecursionMode.M_NO_RECURSE);
        parser.parseHeadless(is, contentTypeString);
        
        // Move the parser to the beginning of the first part
        while (parser.getState() != EntityState.T_START_BODYPART) {

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            filterIS = null;
        }
        
        MimeConfig config = new MimeConfig();
        config.setStrictParsing(true);
        parser = new MimeTokenStream(config);
        parser.setRecursionMode(RecursionMode.M_NO_RECURSE);
        parser.parseHeadless(is, contentTypeString);
        
        // Move the parser to the beginning of the first part
        while (parser.getState() != EntityState.T_START_BODYPART) {

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            boolean result = false;
            MimeConfig config = new MimeConfig();
            config.setMaxLineLen(-1);
            config.setMaxHeaderLen(-1);


            MimeTokenStream parser = new MimeTokenStream(config);            parser.parse(input);
            while (!result && parser.next() != EntityState.T_END_OF_STREAM) {
                final EntityState state = parser.getState();
                switch (state) {
                    case T_BODY:
                    case T_PREAMBLE:
                    case T_EPILOGUE:
                        result = checkBody(isCaseInsensitive, buffer, result,

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            // https://issues.apache.org/jira/browse/IMAP-122
            MimeConfig config = new MimeConfig();
            config.setMaxLineLen(-1);
            config.setMaxHeaderLen(-1);


            final MimeTokenStream parser = new MimeTokenStream(config, new DefaultBodyDescriptorBuilder());


            parser.setRecursionMode(RecursionMode.M_NO_RECURSE);
            parser.parse(bIn);
            final HeaderImpl header = new HeaderImpl();


            EntityState next = parser.next();
            while (next != EntityState.T_BODY && next != EntityState.T_END_OF_STREAM && next != EntityState.T_START_MULTIPART) {
                if (next == EntityState.T_FIELD) {
                    header.addField(parser.getField());
                }
                next = parser.next();
            }
            final MaximalBodyDescriptor descriptor = (MaximalBodyDescriptor) parser.getBodyDescriptor();
            final PropertyBuilder propertyBuilder = new PropertyBuilder();
            final String mediaType;
            final String mediaTypeFromHeader = descriptor.getMediaType();
            final String subType;
            if (mediaTypeFromHeader == null) {
                mediaType = "text";
                subType = "plain";
            } else {
                mediaType = mediaTypeFromHeader;
                subType = descriptor.getSubType();
            }
            propertyBuilder.setMediaType(mediaType);
            propertyBuilder.setSubType(subType);
            propertyBuilder.setContentID(descriptor.getContentId());
            propertyBuilder.setContentDescription(descriptor.getContentDescription());
            propertyBuilder.setContentLocation(descriptor.getContentLocation());
            propertyBuilder.setContentMD5(descriptor.getContentMD5Raw());
            propertyBuilder.setContentTransferEncoding(descriptor.getTransferEncoding());
            propertyBuilder.setContentLanguage(descriptor.getContentLanguage());
            propertyBuilder.setContentDispositionType(descriptor.getContentDispositionType());
            propertyBuilder.setContentDispositionParameters(descriptor.getContentDispositionParameters());
            propertyBuilder.setContentTypeParameters(descriptor.getContentTypeParameters());
            // Add missing types
            final String codeset = descriptor.getCharset();
            if (codeset == null) {
                if ("TEXT".equalsIgnoreCase(mediaType)) {
                    propertyBuilder.setCharset("us-ascii");
                }
            } else {
                propertyBuilder.setCharset(codeset);
            }


            final String boundary = descriptor.getBoundary();
            if (boundary != null) {
                propertyBuilder.setBoundary(boundary);
            }
            if ("text".equalsIgnoreCase(mediaType)) {
                final CountingInputStream bodyStream = new CountingInputStream(parser.getInputStream());
                bodyStream.readAll();
                long lines = bodyStream.getLineCount();
                bodyStream.close();
                next = parser.next();
                if (next == EntityState.T_EPILOGUE) {
                    final CountingInputStream epilogueStream = new CountingInputStream(parser.getInputStream());
                    epilogueStream.readAll();
                    lines += epilogueStream.getLineCount();
                    epilogueStream.close();


                }

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    public PartContentBuilder() {
        MimeConfig config = new MimeConfig();
        config.setMaxLineLen(-1);
        config.setMaxHeaderLen(-1);


        parser = new MimeTokenStream(config);
    }

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