Examples with MessageNano com.google.protobuf.nano.MessageNano used on opensource projects

Example 1 with MessageNano

use of com.google.protobuf.nano.MessageNano in project netty by netty.

the class ProtobufDecoderNano method decode.

@Override
protected void decode(ChannelHandlerContext ctx, ByteBuf msg, List<Object> out) throws Exception {
    final byte[] array;
    final int offset;
    final int length = msg.readableBytes();
    if (msg.hasArray()) {
        array = msg.array();
        offset = msg.arrayOffset() + msg.readerIndex();
    } else {
        array = ByteBufUtil.getBytes(msg, msg.readerIndex(), length, false);
        offset = 0;
    }
    MessageNano prototype = clazz.getConstructor().newInstance();
    out.add(MessageNano.mergeFrom(prototype, array, offset, length));
}

Example 2 with MessageNano

use of com.google.protobuf.nano.MessageNano in project Launcher3 by chislon.

the class DecoderRing method main.

public static void main(String[] args) throws Exception {
    File source = null;
    Class type = Key.class;
    int skip = 0;
    for (int i = 0; i < args.length; i++) {
        if ("-k".equals(args[i])) {
            type = Key.class;
        } else if ("-f".equals(args[i])) {
            type = Favorite.class;
        } else if ("-j".equals(args[i])) {
            type = Journal.class;
        } else if ("-i".equals(args[i])) {
            type = Resource.class;
        } else if ("-s".equals(args[i])) {
            type = Screen.class;
        } else if ("-w".equals(args[i])) {
            type = Widget.class;
        } else if ("-S".equals(args[i])) {
            if ((i + 1) < args.length) {
                skip = Integer.valueOf(args[++i]);
            } else {
                usage(args);
            }
        } else if (args[i] != null && !args[i].startsWith("-")) {
            source = new File(args[i]);
        } else {
            System.err.println("Unsupported flag: " + args[i]);
            usage(args);
        }
    }
    // read in the bytes
    ByteArrayOutputStream byteStream = new ByteArrayOutputStream();
    BufferedInputStream input = null;
    if (source == null) {
        input = new BufferedInputStream(System.in);
    } else {
        try {
            input = new BufferedInputStream(new FileInputStream(source));
        } catch (FileNotFoundException e) {
            System.err.println("failed to open file: " + source + ", " + e);
            System.exit(1);
        }
    }
    byte[] buffer = new byte[1024];
    try {
        while (input.available() > 0) {
            int n = input.read(buffer);
            int offset = 0;
            if (skip > 0) {
                offset = Math.min(skip, n);
                n -= offset;
                skip -= offset;
            }
            if (n > 0) {
                byteStream.write(buffer, offset, n);
            }
        }
    } catch (IOException e) {
        System.err.println("failed to read input: " + e);
        System.exit(1);
    }
    System.err.println("read this many bytes: " + byteStream.size());
    MessageNano proto = null;
    if (type == Key.class) {
        Key key = new Key();
        try {
            key = Key.parseFrom(byteStream.toByteArray());
        } catch (InvalidProtocolBufferNanoException e) {
            System.err.println("failed to parse proto: " + e);
            System.exit(1);
        }
        // keys are self-checked
        if (key.checksum != checkKey(key)) {
            System.err.println("key ckecksum failed");
            System.exit(1);
        }
        proto = key;
    } else {
        // other types are wrapped in a checksum message
        CheckedMessage wrapper = new CheckedMessage();
        try {
            MessageNano.mergeFrom(wrapper, byteStream.toByteArray());
        } catch (InvalidProtocolBufferNanoException e) {
            System.err.println("failed to parse wrapper: " + e);
            System.exit(1);
        }
        CRC32 checksum = new CRC32();
        checksum.update(wrapper.payload);
        if (wrapper.checksum != checksum.getValue()) {
            System.err.println("wrapper ckecksum failed");
            System.exit(1);
        }
        // decode the actual message
        proto = (MessageNano) type.newInstance();
        try {
            MessageNano.mergeFrom(proto, wrapper.payload);
        } catch (InvalidProtocolBufferNanoException e) {
            System.err.println("failed to parse proto: " + e);
            System.exit(1);
        }
    }
    // Generic string output
    System.out.println(proto.toString());
    // save off the icon bits in a file for inspection
    if (proto instanceof Resource) {
        Resource icon = (Resource) proto;
        final String path = "icon.webp";
        FileOutputStream iconFile = new FileOutputStream(path);
        iconFile.write(icon.data);
        iconFile.close();
        System.err.println("wrote " + path);
    }
    // save off the widget icon and preview bits in files for inspection
    if (proto instanceof Widget) {
        Widget widget = (Widget) proto;
        if (widget.icon != null) {
            final String path = "widget_icon.webp";
            FileOutputStream iconFile = new FileOutputStream(path);
            iconFile.write(widget.icon.data);
            iconFile.close();
            System.err.println("wrote " + path);
        }
        if (widget.preview != null) {
            final String path = "widget_preview.webp";
            FileOutputStream iconFile = new FileOutputStream(path);
            iconFile.write(widget.preview.data);
            iconFile.close();
            System.err.println("wrote " + path);
        }
    }
    // success
    System.exit(0);
}