Example usage for io.netty.buffer ByteBuf forEachByteDesc

Introduction

In this page you can find the example usage for io.netty.buffer ByteBuf forEachByteDesc.

Prototype

public abstract int forEachByteDesc(ByteProcessor processor);

Source Link

Document

Iterates over the readable bytes of this buffer with the specified processor in descending order.

Usage

From source file:com.couchbase.client.core.endpoint.view.ViewHandler.java

License:Apache License

/**
 * Parse out the info portion from the header part of the query response.
 *
 * This includes the total rows, but also debug info if attached.
 *///from  ww w. j  a v  a2 s .co m
private void parseViewInfo() {
    int rowsStart = -1;
    for (int i = responseContent.readerIndex(); i < responseContent.writerIndex() - 2; i++) {
        byte curr = responseContent.getByte(i);
        byte f1 = responseContent.getByte(i + 1);
        byte f2 = responseContent.getByte(i + 2);

        if (curr == '"' && f1 == 'r' && f2 == 'o') {
            rowsStart = i;
            break;
        }
    }

    if (rowsStart == -1) {
        return;
    }

    ByteBuf info = responseContent.readBytes(rowsStart - responseContent.readerIndex());
    int closingPointer = info.forEachByteDesc(new ByteBufProcessor() {
        @Override
        public boolean process(byte value) throws Exception {
            return value != ',';
        }
    });

    if (closingPointer > 0) {
        info.setByte(closingPointer, '}');
        viewInfoObservable.onNext(info);
    } else {
        viewInfoObservable.onNext(Unpooled.EMPTY_BUFFER);
    }
    viewInfoObservable.onCompleted();
    viewParsingState = QUERY_STATE_ROWS;
}

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