Java ByteChunk.getBuffer方法代码示例

import org.apache.tomcat.util.buf.ByteChunk; //导入方法依赖的package包/类
/**
 * Character conversion of the a US-ASCII MessageBytes.
 */
protected void convertMB(MessageBytes mb) {

    // This is of course only meaningful for bytes
    if (mb.getType() != MessageBytes.T_BYTES) {
        return;
    }

    ByteChunk bc = mb.getByteChunk();
    CharChunk cc = mb.getCharChunk();
    int length = bc.getLength();
    cc.allocate(length, -1);

    // Default encoding: fast conversion
    byte[] bbuf = bc.getBuffer();
    char[] cbuf = cc.getBuffer();
    int start = bc.getStart();
    for (int i = 0; i < length; i++) {
        cbuf[i] = (char) (bbuf[i + start] & 0xff);
    }
    mb.setChars(cbuf, 0, length);

}
 

import org.apache.tomcat.util.buf.ByteChunk; //导入方法依赖的package包/类
/**
 * Write chunk.
 */
@Override
public int doWrite(ByteChunk chunk, Response res) throws IOException {
    try {
        int len = chunk.getLength();
        int start = chunk.getStart();
        byte[] b = chunk.getBuffer();
        addToBB(b, start, len);
        byteCount += chunk.getLength();
        return chunk.getLength();
    } catch (IOException ioe) {
        response.action(ActionCode.CLOSE_NOW, ioe);
        // Re-throw
        throw ioe;
    }
}
 

import org.apache.tomcat.util.buf.ByteChunk; //导入方法依赖的package包/类
/**
 * Unescapes any double quotes in the given cookie value.
 *
 * @param bc The cookie value to modify
 */
private static void unescapeDoubleQuotes(ByteChunk bc) {

    if (bc == null || bc.getLength() == 0 || bc.indexOf('"', 0) == -1) {
        return;
    }

    int src = bc.getStart();
    int end = bc.getEnd();
    int dest = src;
    byte[] buffer = bc.getBuffer();

    while (src < end) {
        if (buffer[src] == '\\' && src < end && buffer[src+1]  == '"') {
            src++;
        }
        buffer[dest] = buffer[src];
        dest ++;
        src ++;
    }
    bc.setEnd(dest);
}
 

import org.apache.tomcat.util.buf.ByteChunk; //导入方法依赖的package包/类
/**
 * Character conversion of the a US-ASCII MessageBytes.
 */
protected void convertMB(MessageBytes mb) {

	// This is of course only meaningful for bytes
	if (mb.getType() != MessageBytes.T_BYTES) {
		return;
	}

	ByteChunk bc = mb.getByteChunk();
	CharChunk cc = mb.getCharChunk();
	int length = bc.getLength();
	cc.allocate(length, -1);

	// Default encoding: fast conversion
	byte[] bbuf = bc.getBuffer();
	char[] cbuf = cc.getBuffer();
	int start = bc.getStart();
	for (int i = 0; i < length; i++) {
		cbuf[i] = (char) (bbuf[i + start] & 0xff);
	}
	mb.setChars(cbuf, 0, length);

}
 

import org.apache.tomcat.util.buf.ByteChunk; //导入方法依赖的package包/类
/**
 * Character conversion of the a US-ASCII MessageBytes.
 */
protected void convertMB(MessageBytes mb) {

    // This is of course only meaningful for bytes
    if (mb.getType() != MessageBytes.T_BYTES)
        return;
    
    ByteChunk bc = mb.getByteChunk();
    CharChunk cc = mb.getCharChunk();
    int length = bc.getLength();
    cc.allocate(length, -1);

    // Default encoding: fast conversion
    byte[] bbuf = bc.getBuffer();
    char[] cbuf = cc.getBuffer();
    int start = bc.getStart();
    for (int i = 0; i < length; i++) {
        cbuf[i] = (char) (bbuf[i + start] & 0xff);
    }
    mb.setChars(cbuf, 0, length);

}
 

import org.apache.tomcat.util.buf.ByteChunk; //导入方法依赖的package包/类
/**
 * Specialized utility method: find a sequence of lower case bytes inside
 * a ByteChunk.
 */
protected int findBytes(ByteChunk bc, byte[] b) {

    byte first = b[0];
    byte[] buff = bc.getBuffer();
    int start = bc.getStart();
    int end = bc.getEnd();

// Look for first char
int srcEnd = b.length;

for (int i = start; i <= (end - srcEnd); i++) {
    if (Ascii.toLower(buff[i]) != first) continue;
    // found first char, now look for a match
        int myPos = i+1;
    for (int srcPos = 1; srcPos < srcEnd; ) {
            if (Ascii.toLower(buff[myPos++]) != b[srcPos++])
        break;
            if (srcPos == srcEnd) return i - start; // found it
    }
}
return -1;

}
 

import org.apache.tomcat.util.buf.ByteChunk; //导入方法依赖的package包/类
/**
 * Unescapes any double quotes in the given cookie value.
 *
 * @param bc The cookie value to modify
 */
public static void unescapeDoubleQuotes(ByteChunk bc) {

    if (bc == null || bc.getLength() == 0 || bc.indexOf('"', 0) == -1) {
        return;
    }

    int src = bc.getStart();
    int end = bc.getEnd();
    int dest = src;
    byte[] buffer = bc.getBuffer();
    
    while (src < end) {
        if (buffer[src] == '\\' && src < end && buffer[src+1]  == '"') {
            src++;
        }
        buffer[dest] = buffer[src];
        dest ++;
        src ++;
    }
    bc.setEnd(dest);
}
 

import org.apache.tomcat.util.buf.ByteChunk; //导入方法依赖的package包/类
/**
 * Write chunk.
 */
@Override
public int doWrite(ByteChunk chunk, Response res) throws IOException {
	try {
		int len = chunk.getLength();
		int start = chunk.getStart();
		byte[] b = chunk.getBuffer();
		while (len > 0) {
			int thisTime = len;
			if (bbuf.position() == bbuf.capacity()) {
				flushBuffer();
			}
			if (thisTime > bbuf.capacity() - bbuf.position()) {
				thisTime = bbuf.capacity() - bbuf.position();
			}
			bbuf.put(b, start, thisTime);
			len = len - thisTime;
			start = start + thisTime;
		}
		byteCount += chunk.getLength();
		return chunk.getLength();
	} catch (IOException ioe) {
		response.action(ActionCode.CLOSE_NOW, ioe);
		// Re-throw
		throw ioe;
	}
}
 

import org.apache.tomcat.util.buf.ByteChunk; //导入方法依赖的package包/类
/**
 * Write chunk.
 */
@Override
public int doWrite(ByteChunk chunk, Response res) throws IOException {
    try {
        int len = chunk.getLength();
        int start = chunk.getStart();
        byte[] b = chunk.getBuffer();
        while (len > 0) {
            int thisTime = len;
            if (bbuf.position() == bbuf.capacity()) {
                flushBuffer();
            }
            if (thisTime > bbuf.capacity() - bbuf.position()) {
                thisTime = bbuf.capacity() - bbuf.position();
            }
            bbuf.put(b, start, thisTime);
            len = len - thisTime;
            start = start + thisTime;
        }
        byteCount += chunk.getLength();
        return chunk.getLength();
    } catch (IOException ioe) {
        response.action(ActionCode.CLOSE_NOW, ioe);
        // Re-throw
        throw ioe;
    }
}
 

import org.apache.tomcat.util.buf.ByteChunk; //导入方法依赖的package包/类
/**
 * Specialized utility method: find a sequence of lower case bytes inside a
 * ByteChunk.
 */
protected int findBytes(ByteChunk bc, byte[] b) {

	byte first = b[0];
	byte[] buff = bc.getBuffer();
	int start = bc.getStart();
	int end = bc.getEnd();

	// Look for first char
	int srcEnd = b.length;

	for (int i = start; i <= (end - srcEnd); i++) {
		if (Ascii.toLower(buff[i]) != first) {
			continue;
		}
		// found first char, now look for a match
		int myPos = i + 1;
		for (int srcPos = 1; srcPos < srcEnd;) {
			if (Ascii.toLower(buff[myPos++]) != b[srcPos++]) {
				break;
			}
			if (srcPos == srcEnd) {
				return i - start; // found it
			}
		}
	}
	return -1;
}
 

import org.apache.tomcat.util.buf.ByteChunk; //导入方法依赖的package包/类
/**
 * Decodes Base64 data into octets
 *
 * @param base64DataBC Byte array containing Base64 data
 * @param decodedDataCC The decoded data chars
 */
public static void decode( ByteChunk base64DataBC, CharChunk decodedDataCC)
{
    int start = base64DataBC.getStart();
    int end = base64DataBC.getEnd();
    byte[] base64Data = base64DataBC.getBuffer();
    
    decodedDataCC.recycle();
    
    // handle the edge case, so we don't have to worry about it later
    if(end - start == 0) { return; }

    int      numberQuadruple    = (end - start)/FOURBYTE;
    byte     b1=0,b2=0,b3=0, b4=0, marker0=0, marker1=0;

    // Throw away anything not in base64Data

    int encodedIndex = 0;
    int dataIndex = start;
    char[] decodedData = null;
    
    {
        // this sizes the output array properly - rlw
        int lastData = end - start;
        // ignore the '=' padding
        while (base64Data[start+lastData-1] == PAD)
        {
            if (--lastData == 0)
            {
                return;
            }
        }
        decodedDataCC.allocate(lastData - numberQuadruple, -1);
        decodedDataCC.setEnd(lastData - numberQuadruple);
        decodedData = decodedDataCC.getBuffer();
    }

    for (int i = 0; i < numberQuadruple; i++)
    {
        dataIndex = start + i * 4;
        marker0   = base64Data[dataIndex + 2];
        marker1   = base64Data[dataIndex + 3];

        b1 = base64Alphabet[base64Data[dataIndex]];
        b2 = base64Alphabet[base64Data[dataIndex +1]];

        if (marker0 != PAD && marker1 != PAD)
        {
            //No PAD e.g 3cQl
            b3 = base64Alphabet[ marker0 ];
            b4 = base64Alphabet[ marker1 ];

            decodedData[encodedIndex]   = (char) ((  b1 <<2 | b2>>4 ) & 0xff);
            decodedData[encodedIndex + 1] =
                (char) ((((b2 & 0xf)<<4 ) |( (b3>>2) & 0xf) ) & 0xff);
            decodedData[encodedIndex + 2] = (char) (( b3<<6 | b4 ) & 0xff);
        }
        else if (marker0 == PAD)
        {
            //Two PAD e.g. 3c[Pad][Pad]
            decodedData[encodedIndex]   = (char) ((  b1 <<2 | b2>>4 ) & 0xff);
        }
        else if (marker1 == PAD)
        {
            //One PAD e.g. 3cQ[Pad]
            b3 = base64Alphabet[ marker0 ];

            decodedData[encodedIndex]   = (char) ((  b1 <<2 | b2>>4 ) & 0xff);
            decodedData[encodedIndex + 1] =
                (char) ((((b2 & 0xf)<<4 ) |( (b3>>2) & 0xf) ) & 0xff);
        }
        encodedIndex += 3;
    }
}
 

import org.apache.tomcat.util.buf.ByteChunk; //导入方法依赖的package包/类
/**
 * Decodes Base64 data into octets
 *
 * @param base64DataBC
 *            Byte array containing Base64 data
 * @param decodedDataBC
 *            The decoded data bytes
 */
public static void decode(ByteChunk base64DataBC, ByteChunk decodedDataBC) {
	int start = base64DataBC.getStart();
	int end = base64DataBC.getEnd();
	byte[] base64Data = base64DataBC.getBuffer();

	decodedDataBC.recycle();

	// handle the edge case, so we don't have to worry about it later
	if (end - start == 0) {
		return;
	}

	int numberQuadruple = (end - start) / FOURBYTE;
	byte b1 = 0, b2 = 0, b3 = 0, b4 = 0, marker0 = 0, marker1 = 0;

	// Throw away anything not in base64Data

	int encodedIndex = 0;
	int dataIndex = start;
	byte[] decodedData = null;

	{
		// this sizes the output array properly - rlw
		int lastData = end - start;
		// ignore the '=' padding
		while (base64Data[start + lastData - 1] == PAD) {
			if (--lastData == 0) {
				return;
			}
		}
		decodedDataBC.allocate(lastData - numberQuadruple, -1);
		decodedDataBC.setEnd(lastData - numberQuadruple);
		decodedData = decodedDataBC.getBuffer();
	}

	for (int i = 0; i < numberQuadruple; i++) {
		dataIndex = start + i * 4;
		marker0 = base64Data[dataIndex + 2];
		marker1 = base64Data[dataIndex + 3];

		b1 = base64Alphabet[base64Data[dataIndex]];
		b2 = base64Alphabet[base64Data[dataIndex + 1]];

		if (marker0 != PAD && marker1 != PAD) {
			// No PAD e.g 3cQl
			b3 = base64Alphabet[marker0];
			b4 = base64Alphabet[marker1];

			decodedData[encodedIndex] = (byte) ((b1 << 2 | b2 >> 4) & 0xff);
			decodedData[encodedIndex + 1] = (byte) ((((b2 & 0xf) << 4) | ((b3 >> 2) & 0xf)) & 0xff);
			decodedData[encodedIndex + 2] = (byte) ((b3 << 6 | b4) & 0xff);
		} else if (marker0 == PAD) {
			// Two PAD e.g. 3c[Pad][Pad]
			decodedData[encodedIndex] = (byte) ((b1 << 2 | b2 >> 4) & 0xff);
		} else if (marker1 == PAD) {
			// One PAD e.g. 3cQ[Pad]
			b3 = base64Alphabet[marker0];

			decodedData[encodedIndex] = (byte) ((b1 << 2 | b2 >> 4) & 0xff);
			decodedData[encodedIndex + 1] = (byte) ((((b2 & 0xf) << 4) | ((b3 >> 2) & 0xf)) & 0xff);
		}
		encodedIndex += 3;
	}
}
 

import org.apache.tomcat.util.buf.ByteChunk; //导入方法依赖的package包/类
/**
 * Decodes Base64 data into octects
 *
 * @param base64DataBC Byte array containing Base64 data
 * @param decodedDataCC The decoded data chars
 */
public static void decode( ByteChunk base64DataBC, CharChunk decodedDataCC)
{
    int start = base64DataBC.getStart();
    int end = base64DataBC.getEnd();
    byte[] base64Data = base64DataBC.getBuffer();
    
    decodedDataCC.recycle();
    
    // handle the edge case, so we don't have to worry about it later
    if(end - start == 0) { return; }

    int      numberQuadruple    = (end - start)/FOURBYTE;
    byte     b1=0,b2=0,b3=0, b4=0, marker0=0, marker1=0;

    // Throw away anything not in base64Data

    int encodedIndex = 0;
    int dataIndex = start;
    char[] decodedData = null;
    
    {
        // this sizes the output array properly - rlw
        int lastData = end - start;
        // ignore the '=' padding
        while (base64Data[start+lastData-1] == PAD)
        {
            if (--lastData == 0)
            {
                return;
            }
        }
        decodedDataCC.allocate(lastData - numberQuadruple, -1);
        decodedDataCC.setEnd(lastData - numberQuadruple);
        decodedData = decodedDataCC.getBuffer();
    }

    for (int i = 0; i < numberQuadruple; i++)
    {
        dataIndex = start + i * 4;
        marker0   = base64Data[dataIndex + 2];
        marker1   = base64Data[dataIndex + 3];

        b1 = base64Alphabet[base64Data[dataIndex]];
        b2 = base64Alphabet[base64Data[dataIndex +1]];

        if (marker0 != PAD && marker1 != PAD)
        {
            //No PAD e.g 3cQl
            b3 = base64Alphabet[ marker0 ];
            b4 = base64Alphabet[ marker1 ];

            decodedData[encodedIndex]   = (char) ((  b1 <<2 | b2>>4 ) & 0xff);
            decodedData[encodedIndex + 1] =
                (char) ((((b2 & 0xf)<<4 ) |( (b3>>2) & 0xf) ) & 0xff);
            decodedData[encodedIndex + 2] = (char) (( b3<<6 | b4 ) & 0xff);
        }
        else if (marker0 == PAD)
        {
            //Two PAD e.g. 3c[Pad][Pad]
            decodedData[encodedIndex]   = (char) ((  b1 <<2 | b2>>4 ) & 0xff);
        }
        else if (marker1 == PAD)
        {
            //One PAD e.g. 3cQ[Pad]
            b3 = base64Alphabet[ marker0 ];

            decodedData[encodedIndex]   = (char) ((  b1 <<2 | b2>>4 ) & 0xff);
            decodedData[encodedIndex + 1] =
                (char) ((((b2 & 0xf)<<4 ) |( (b3>>2) & 0xf) ) & 0xff);
        }
        encodedIndex += 3;
    }
}
 

import org.apache.tomcat.util.buf.ByteChunk; //导入方法依赖的package包/类
/**
 * Write chunk.
 */
public int doWrite(ByteChunk chunk, Response res) 
    throws IOException {

    // If non blocking (comet) and there are leftover bytes, 
    // put all remaining bytes in the leftover buffer (they are
    // part of the same write operation)
    if (leftover.getLength() > 0) {
        leftover.append(chunk);
        return chunk.getLength();
    }
    
    int len = chunk.getLength();
    int start = chunk.getStart();
    byte[] b = chunk.getBuffer();
    while (len > 0) {
        int thisTime = len;
        if (bbuf.position() == bbuf.capacity()) {
            flushBuffer();
            if (leftover.getLength() > 0) {
                // If non blocking (comet) and there are leftover bytes, 
                // put all remaining bytes in the leftover buffer (they are
                // part of the same write operation)
                int oldStart = chunk.getOffset();
                chunk.setOffset(start);
                leftover.append(chunk);
                chunk.setOffset(oldStart);
                // After that, all content has been "written"
                return chunk.getLength();
            }
        }
        if (thisTime > bbuf.capacity() - bbuf.position()) {
            thisTime = bbuf.capacity() - bbuf.position();
        }
        bbuf.put(b, start, thisTime);
        len = len - thisTime;
        start = start + thisTime;
    }
    return chunk.getLength();

}