Example usage for org.springframework.core.io.buffer DataBuffer readPosition

Introduction

In this page you can find the example usage for org.springframework.core.io.buffer DataBuffer readPosition.

Prototype

int readPosition();

Source Link

Document

Return the position from which this buffer will read.

Usage

From source file:org.springframework.http.codec.multipart.DefaultMultipartMessageReader.java

/**
 * Indicates whether the given data buffer is not the last boundary, i.e. it does not start
 * with two hyphens.//from   www  .j  a  v a  2s.c  o m
 */
private static boolean notLastBoundary(DataBuffer dataBuffer) {
    if (dataBuffer.readableByteCount() >= 2) {
        int readPosition = dataBuffer.readPosition();
        if (dataBuffer.getByte(readPosition) == HYPHEN && dataBuffer.getByte(readPosition + 1) == HYPHEN) {
            DataBufferUtils.release(dataBuffer);
            return false;
        }
    }
    return true;
}

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From source file:org.springframework.http.codec.multipart.DefaultMultipartMessageReader.java

/**
 * Convert the given data buffer into a Part. All data up until the header separator (\r\n\r\n)
 * is passed to {@link #toHeaders(DataBuffer)}, the remaining data is considered to be the
 * body.//from  w w w .  ja  va2s. c o  m
 */
private static Part toPart(DataBuffer dataBuffer) {
    int readPosition = dataBuffer.readPosition();
    if (dataBuffer.readableByteCount() >= 2) {
        if (dataBuffer.getByte(readPosition) == CR && dataBuffer.getByte(readPosition + 1) == LF) {
            dataBuffer.readPosition(readPosition + 2);
        }
    }

    if (logger.isTraceEnabled()) {
        logger.trace("Part data: " + toString(dataBuffer));
    }
    int endIdx = HEADER_MATCHER.match(dataBuffer);

    HttpHeaders headers;
    DataBuffer body;
    if (endIdx > 0) {
        readPosition = dataBuffer.readPosition();
        int headersLength = endIdx + 1 - (readPosition + HEADER_BODY_SEPARATOR.length);
        DataBuffer headersBuffer = dataBuffer.retainedSlice(readPosition, headersLength);
        int bodyLength = dataBuffer.writePosition() - (1 + endIdx);
        body = dataBuffer.retainedSlice(endIdx + 1, bodyLength);
        headers = toHeaders(headersBuffer);
    } else {
        headers = new HttpHeaders();
        body = DataBufferUtils.retain(dataBuffer);
    }
    DataBufferUtils.release(dataBuffer);

    ContentDisposition cd = headers.getContentDisposition();
    MediaType contentType = headers.getContentType();
    if (StringUtils.hasLength(cd.getFilename())) {
        return new DefaultFilePart(headers, body);
    } else if (StringUtils.hasLength(cd.getName())
            && (contentType == null || MediaType.TEXT_PLAIN.isCompatibleWith(contentType))) {
        return new DefaultFormPart(headers, body);
    } else {
        return new DefaultPart(headers, body);
    }
}

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From source file:org.springframework.http.codec.multipart.DefaultMultipartMessageReader.java

private static String toString(DataBuffer dataBuffer) {
    byte[] bytes = new byte[dataBuffer.readableByteCount()];
    int j = 0;/*from w  ww  .j  ava 2  s  . co  m*/
    for (int i = dataBuffer.readPosition(); i < dataBuffer.writePosition(); i++) {
        bytes[j++] = dataBuffer.getByte(i);
    }
    return toString(bytes);
}

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