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Posted to dev@velocity.apache.org by jv...@locus.apache.org on 2000/11/04 03:40:19 UTC
cvs commit: jakarta-velocity/src/java/org/apache/velocity/io JspWriter.java JspWriterImpl.java ArrayByteData.java ByteBuffer.java ByteBufferOutputStream.java ByteData.java CharToByteBuffer.java CharToByteBufferWriter.java DefaultByteBuffer.java DefaultCharToByteBuffer.java FileByteBuffer.java FileByteData.java IdentityMap.java InternedCharToByteBuffer.java SpilloverByteBuffer.java TemporaryFile.java
jvanzyl 00/11/03 18:40:19
Added: src/java/org/apache/velocity/io JspWriter.java
JspWriterImpl.java
Removed: src/java/org/apache/velocity/io ArrayByteData.java
ByteBuffer.java ByteBufferOutputStream.java
ByteData.java CharToByteBuffer.java
CharToByteBufferWriter.java DefaultByteBuffer.java
DefaultCharToByteBuffer.java FileByteBuffer.java
FileByteData.java IdentityMap.java
InternedCharToByteBuffer.java
SpilloverByteBuffer.java TemporaryFile.java
Log:
- using the Jasper JspWriter for the servlet i/o instead of Tea,
because the Jasper code is much faster.
Revision Changes Path
1.1 jakarta-velocity/src/java/org/apache/velocity/io/JspWriter.java
Index: JspWriter.java
===================================================================
package org.apache.velocity.io;
/*
* The Apache Software License, Version 1.1
*
* Copyright (c) 1999 The Apache Software Foundation. All rights
* reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
*
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
*
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in
* the documentation and/or other materials provided with the
* distribution.
*
* 3. The end-user documentation included with the redistribution, if
* any, must include the following acknowlegement:
* "This product includes software developed by the
* Apache Software Foundation (http://www.apache.org/)."
* Alternately, this acknowlegement may appear in the software itself,
* if and wherever such third-party acknowlegements normally appear.
*
* 4. The names "The Jakarta Project", "Tomcat", and "Apache Software
* Foundation" must not be used to endorse or promote products derived
* from this software without prior written permission. For written
* permission, please contact apache@apache.org.
*
* 5. Products derived from this software may not be called "Apache"
* nor may "Apache" appear in their names without prior written
* permission of the Apache Group.
*
* THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESSED OR IMPLIED
* WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
* DISCLAIMED. IN NO EVENT SHALL THE APACHE SOFTWARE FOUNDATION OR
* ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
* SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
* LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF
* USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
* ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
* OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT
* OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
* SUCH DAMAGE.
* ====================================================================
*
* This software consists of voluntary contributions made by many
* individuals on behalf of the Apache Software Foundation. For more
* information on the Apache Software Foundation, please see
* <http://www.apache.org/>.
*
*/
import java.io.IOException;
/**
* <p>
* The actions and template data in a JSP page is written using the
* JspWriter object that is referenced by the implicit variable out which
* is initialized automatically using methods in the PageContext object.
* <p>
* This abstract class emulates some of the functionality found in the
* java.io.BufferedWriter and java.io.PrintWriter classes,
* however it differs in that it throws java.io.IOException from the print
* methods while PrintWriter does not.
* <p><B>Buffering</B>
* <p>
* The initial JspWriter object is associated with the PrintWriter object
* of the ServletResponse in a way that depends on whether the page is or
* is not buffered. If the page is not buffered, output written to this
* JspWriter object will be written through to the PrintWriter directly,
* which will be created if necessary by invoking the getWriter() method
* on the response object. But if the page is buffered, the PrintWriter
* object will not be created until the buffer is flushed and
* operations like setContentType() are legal. Since this flexibility
* simplifies programming substantially, buffering is the default for JSP
* pages.
* <p>
* Buffering raises the issue of what to do when the buffer is
* exceeded. Two approaches can be taken:
* <ul>
* <li>
* Exceeding the buffer is not a fatal error; when the buffer is
* exceeded, just flush the output.
* <li>
* Exceeding the buffer is a fatal error; when the buffer is exceeded,
* raise an exception.
* </ul>
* <p>
* Both approaches are valid, and thus both are supported in the JSP
* technology. The behavior of a page is controlled by the autoFlush
* attribute, which defaults to true. In general, JSP pages that need to
* be sure that correct and complete data has been sent to their client
* may want to set autoFlush to false, with a typical case being that
* where the client is an application itself. On the other hand, JSP
* pages that send data that is meaningful even when partially
* constructed may want to set autoFlush to true; such as when the
* data is sent for immediate display through a browser. Each application
* will need to consider their specific needs.
* <p>
* An alternative considered was to make the buffer size unbounded; but,
* this had the disadvantage that runaway computations would consume an
* unbounded amount of resources.
* <p>
* The "out" implicit variable of a JSP implementation class is of this type.
* If the page directive selects autoflush="true" then all the I/O operations
* on this class shall automatically flush the contents of the buffer if an
* overflow condition would result if the current operation were performed
* without a flush. If autoflush="false" then all the I/O operations on this
* class shall throw an IOException if performing the current operation would
* result in a buffer overflow condition.
*
* @see java.io.Writer
* @see java.io.BufferedWriter
* @see java.io.PrintWriter
*/
abstract public class JspWriter extends java.io.Writer {
/**
* constant indicating that the Writer is not buffering output
*/
public static final int NO_BUFFER = 0;
/**
* constant indicating that the Writer is buffered and is using the implementation default buffer size
*/
public static final int DEFAULT_BUFFER = -1;
/**
* constant indicating that the Writer is buffered and is unbounded; this is used in BodyContent
*/
public static final int UNBOUNDED_BUFFER = -2;
/**
* protected constructor.
*/
protected JspWriter(int bufferSize, boolean autoFlush) {
this.bufferSize = bufferSize;
this.autoFlush = autoFlush;
}
/**
* Write a line separator. The line separator string is defined by the
* system property <tt>line.separator</tt>, and is not necessarily a single
* newline ('\n') character.
*
* @exception IOException If an I/O error occurs
*/
abstract public void newLine() throws IOException;
/**
* Print a boolean value. The string produced by <code>{@link
* java.lang.String#valueOf(boolean)}</code> is translated into bytes
* according to the platform's default character encoding, and these bytes
* are written in exactly the manner of the <code>{@link
* #write(int)}</code> method.
*
* @param b The <code>boolean</code> to be printed
* @throws java.io.IOException
*/
abstract public void print(boolean b) throws IOException;
/**
* Print a character. The character is translated into one or more bytes
* according to the platform's default character encoding, and these bytes
* are written in exactly the manner of the <code>{@link
* #write(int)}</code> method.
*
* @param c The <code>char</code> to be printed
* @throws java.io.IOException
*/
abstract public void print(char c) throws IOException;
/**
* Print an integer. The string produced by <code>{@link
* java.lang.String#valueOf(int)}</code> is translated into bytes according
* to the platform's default character encoding, and these bytes are
* written in exactly the manner of the <code>{@link #write(int)}</code>
* method.
*
* @param i The <code>int</code> to be printed
* @see java.lang.Integer#toString(int)
* @throws java.io.IOException
*/
abstract public void print(int i) throws IOException;
/**
* Print a long integer. The string produced by <code>{@link
* java.lang.String#valueOf(long)}</code> is translated into bytes
* according to the platform's default character encoding, and these bytes
* are written in exactly the manner of the <code>{@link #write(int)}</code>
* method.
*
* @param l The <code>long</code> to be printed
* @see java.lang.Long#toString(long)
* @throws java.io.IOException
*/
abstract public void print(long l) throws IOException;
/**
* Print a floating-point number. The string produced by <code>{@link
* java.lang.String#valueOf(float)}</code> is translated into bytes
* according to the platform's default character encoding, and these bytes
* are written in exactly the manner of the <code>{@link #write(int)}</code>
* method.
*
* @param f The <code>float</code> to be printed
* @see java.lang.Float#toString(float)
* @throws java.io.IOException
*/
abstract public void print(float f) throws IOException;
/**
* Print a double-precision floating-point number. The string produced by
* <code>{@link java.lang.String#valueOf(double)}</code> is translated into
* bytes according to the platform's default character encoding, and these
* bytes are written in exactly the manner of the <code>{@link
* #write(int)}</code> method.
*
* @param d The <code>double</code> to be printed
* @see java.lang.Double#toString(double)
* @throws java.io.IOException
*/
abstract public void print(double d) throws IOException;
/**
* Print an array of characters. The characters are converted into bytes
* according to the platform's default character encoding, and these bytes
* are written in exactly the manner of the <code>{@link #write(int)}</code>
* method.
*
* @param s The array of chars to be printed
*
* @throws NullPointerException If <code>s</code> is <code>null</code>
* @throws java.io.IOException
*/
abstract public void print(char s[]) throws IOException;
/**
* Print a string. If the argument is <code>null</code> then the string
* <code>"null"</code> is printed. Otherwise, the string's characters are
* converted into bytes according to the platform's default character
* encoding, and these bytes are written in exactly the manner of the
* <code>{@link #write(int)}</code> method.
*
* @param s The <code>String</code> to be printed
* @throws java.io.IOException
*/
abstract public void print(String s) throws IOException;
/**
* Print an object. The string produced by the <code>{@link
* java.lang.String#valueOf(Object)}</code> method is translated into bytes
* according to the platform's default character encoding, and these bytes
* are written in exactly the manner of the <code>{@link #write(int)}</code>
* method.
*
* @param obj The <code>Object</code> to be printed
* @see java.lang.Object#toString()
* @throws java.io.IOException
*/
abstract public void print(Object obj) throws IOException;
/**
* Terminate the current line by writing the line separator string. The
* line separator string is defined by the system property
* <code>line.separator</code>, and is not necessarily a single newline
* character (<code>'\n'</code>).
* @throws java.io.IOException
*/
abstract public void println() throws IOException;
/**
* Print a boolean value and then terminate the line. This method behaves
* as though it invokes <code>{@link #print(boolean)}</code> and then
* <code>{@link #println()}</code>.
* @throws java.io.IOException
*/
abstract public void println(boolean x) throws IOException;
/**
* Print a character and then terminate the line. This method behaves as
* though it invokes <code>{@link #print(char)}</code> and then <code>{@link
* #println()}</code>.
* @throws java.io.IOException
*/
abstract public void println(char x) throws IOException;
/**
* Print an integer and then terminate the line. This method behaves as
* though it invokes <code>{@link #print(int)}</code> and then <code>{@link
* #println()}</code>.
* @throws java.io.IOException
*/
abstract public void println(int x) throws IOException;
/**
* Print a long integer and then terminate the line. This method behaves
* as though it invokes <code>{@link #print(long)}</code> and then
* <code>{@link #println()}</code>.
* @throws java.io.IOException
*/
abstract public void println(long x) throws IOException;
/**
* Print a floating-point number and then terminate the line. This method
* behaves as though it invokes <code>{@link #print(float)}</code> and then
* <code>{@link #println()}</code>.
* @throws java.io.IOException
*/
abstract public void println(float x) throws IOException;
/**
* Print a double-precision floating-point number and then terminate the
* line. This method behaves as though it invokes <code>{@link
* #print(double)}</code> and then <code>{@link #println()}</code>.
* @throws java.io.IOException
*/
abstract public void println(double x) throws IOException;
/**
* Print an array of characters and then terminate the line. This method
* behaves as though it invokes <code>print(char[])</code> and then
* <code>println()</code>.
* @throws java.io.IOException
*/
abstract public void println(char x[]) throws IOException;
/**
* Print a String and then terminate the line. This method behaves as
* though it invokes <code>{@link #print(String)}</code> and then
* <code>{@link #println()}</code>.
* @throws java.io.IOException
*/
abstract public void println(String x) throws IOException;
/**
* Print an Object and then terminate the line. This method behaves as
* though it invokes <code>{@link #print(Object)}</code> and then
* <code>{@link #println()}</code>.
* @throws java.io.IOException
*/
abstract public void println(Object x) throws IOException;
/**
* Clear the contents of the buffer. If the buffer has been already
* been flushed then the clear operation shall throw an IOException
* to signal the fact that some data has already been irrevocably
* written to the client response stream.
*
* @throws IOException If an I/O error occurs
*/
abstract public void clear() throws IOException;
/**
* Clears the current contents of the buffer. Unlike clear(), this
* method will not throw an IOException if the buffer has already been
* flushed. It merely clears the current content of the buffer and
* returns.
*
* @throws IOException If an I/O error occurs
*/
abstract public void clearBuffer() throws IOException;
/**
* Flush the stream. If the stream has saved any characters from the
* various write() methods in a buffer, write them immediately to their
* intended destination. Then, if that destination is another character or
* byte stream, flush it. Thus one flush() invocation will flush all the
* buffers in a chain of Writers and OutputStreams.
* <p>
* The method may be invoked indirectly if the buffer size is exceeded.
* <p>
* Once a stream has been closed,
* further write() or flush() invocations will cause an IOException to be
* thrown.
*
* @exception IOException If an I/O error occurs
*/
abstract public void flush() throws IOException;
/**
* Close the stream, flushing it first
* <p>
* This method needs not be invoked explicitly for the initial JspWriter
* as the code generated by the JSP container will automatically
* include a call to close().
* <p>
* Closing a previously-closed stream, unlike flush(), has no effect.
*
* @exception IOException If an I/O error occurs
*/
abstract public void close() throws IOException;
/**
* This method returns the size of the buffer used by the JspWriter.
*
* @return the size of the buffer in bytes, or 0 is unbuffered.
*/
public int getBufferSize() { return bufferSize; }
/**
* This method returns the number of unused bytes in the buffer.
*
* @return the number of bytes unused in the buffer
*/
abstract public int getRemaining();
/**
* This method indicates whether the JspWriter is autoFlushing.
*
* @return if this JspWriter is auto flushing or throwing IOExceptions on buffer overflow conditions
*/
public boolean isAutoFlush() { return autoFlush; }
/*
* fields
*/
protected int bufferSize;
protected boolean autoFlush;
}
1.1 jakarta-velocity/src/java/org/apache/velocity/io/JspWriterImpl.java
Index: JspWriterImpl.java
===================================================================
package org.apache.velocity.io;
/*
* $Header: /home/cvs/jakarta-velocity/src/java/org/apache/velocity/io/JspWriterImpl.java,v 1.1 2000/11/04 02:40:18 jvanzyl Exp $
* $Revision: 1.1 $
* $Date: 2000/11/04 02:40:18 $
*
* ====================================================================
*
* The Apache Software License, Version 1.1
*
* Copyright (c) 1999 The Apache Software Foundation. All rights
* reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
*
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
*
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in
* the documentation and/or other materials provided with the
* distribution.
*
* 3. The end-user documentation included with the redistribution, if
* any, must include the following acknowlegement:
* "This product includes software developed by the
* Apache Software Foundation (http://www.apache.org/)."
* Alternately, this acknowlegement may appear in the software itself,
* if and wherever such third-party acknowlegements normally appear.
*
* 4. The names "The Jakarta Project", "Tomcat", and "Apache Software
* Foundation" must not be used to endorse or promote products derived
* from this software without prior written permission. For written
* permission, please contact apache@apache.org.
*
* 5. Products derived from this software may not be called "Apache"
* nor may "Apache" appear in their names without prior written
* permission of the Apache Group.
*
* THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESSED OR IMPLIED
* WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
* DISCLAIMED. IN NO EVENT SHALL THE APACHE SOFTWARE FOUNDATION OR
* ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
* SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
* LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF
* USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
* ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
* OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT
* OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
* SUCH DAMAGE.
* ====================================================================
*
* This software consists of voluntary contributions made by many
* individuals on behalf of the Apache Software Foundation. For more
* information on the Apache Software Foundation, please see
* <http://www.apache.org/>.
*
*/
import java.io.IOException;
import java.io.Writer;
import javax.servlet.ServletResponse;
/**
* Write text to a character-output stream, buffering characters so as
* to provide for the efficient writing of single characters, arrays,
* and strings.
*
* Provide support for discarding for the output that has been
* buffered.
*
* This needs revisiting when the buffering problems in the JSP spec
* are fixed -akv
*
* @author Anil K. Vijendran
*/
public class JspWriterImpl extends JspWriter
{
protected Writer out;
protected ServletResponse response;
protected char cb[];
protected int nextChar;
protected static int defaultCharBufferSize = 8 * 1024;
protected boolean flushed = false;
public JspWriterImpl()
{
super( defaultCharBufferSize, true );
}
/**
* Create a buffered character-output stream that uses a default-sized
* output buffer.
*
* @param response A Servlet Response
*/
public JspWriterImpl(ServletResponse response)
{
this(response, defaultCharBufferSize, true);
}
/**
* Create a new buffered character-output stream that uses an output
* buffer of the given size.
*
* @param response A Servlet Response
* @param sz Output-buffer size, a positive integer
*
* @exception IllegalArgumentException If sz is <= 0
*/
public JspWriterImpl(ServletResponse response, int sz, boolean autoFlush)
{
super(sz, autoFlush);
if (sz < 0)
throw new IllegalArgumentException("Buffer size <= 0");
this.response = response;
cb = sz == 0 ? null : new char[sz];
nextChar = 0;
}
void init( ServletResponse response, int sz, boolean autoFlush ) {
this.response= response;
if( sz > 0 && ( cb == null || sz > cb.length ) )
cb=new char[sz];
nextChar = 0;
this.autoFlush=autoFlush;
this.bufferSize=sz;
}
/**
* Flush the output buffer to the underlying character stream, without
* flushing the stream itself. This method is non-private only so that it
* may be invoked by PrintStream.
*/
protected final void flushBuffer() throws IOException {
synchronized (lock) {
if (bufferSize == 0)
return;
flushed = true;
ensureOpen();
if (nextChar == 0)
return;
initOut();
out.write(cb, 0, nextChar);
nextChar = 0;
}
}
protected void initOut() throws IOException {
if (out == null) {
out = response.getWriter();
//System.out.println("JspWriterImpl: initOut: " + this + " " +out);
}
}
/**
* Discard the output buffer.
*/
public final void clear() throws IOException {
synchronized (lock) {
if (bufferSize == 0)
throw new IllegalStateException("ise_on_clear");
//throw new IllegalStateException(Constants.getString("jsp.error.ise_on_clear"));
if (flushed)
throw new IOException("attempt_to_clear_flushed_buffer");
//throw new IOException(Constants.getString("jsp.error.attempt_to_clear_flushed_buffer"));
ensureOpen();
nextChar = 0;
}
}
public void clearBuffer() throws IOException {
synchronized (lock) {
if (bufferSize == 0)
throw new IllegalStateException("ise_on_clear");
//throw new IllegalStateException(Constants.getString("jsp.error.ise_on_clear"));
ensureOpen();
nextChar = 0;
}
}
private final void bufferOverflow() throws IOException {
throw new IOException("overflow");
//throw new IOException(Constants.getString("jsp.error.overflow"));
}
/**
* Flush the stream.
*
*/
public void flush() throws IOException {
synchronized (lock) {
flushBuffer();
if (out != null) {
out.flush();
// Also flush the response buffer.
response.flushBuffer();
}
}
}
/**
* Close the stream.
*
*/
public void close() throws IOException {
synchronized (lock) {
if (response == null)
return;
flush();
if (out != null)
out.close();
out = null;
// cb = null;
}
}
/**
* @return the number of bytes unused in the buffer
*/
public int getRemaining() {
return bufferSize - nextChar;
}
/** check to make sure that the stream has not been closed */
protected void ensureOpen() throws IOException {
if (response == null)
throw new IOException("Stream closed");
}
/**
* Write a single character.
*
*/
public void write(int c) throws IOException {
synchronized (lock) {
ensureOpen();
if (bufferSize == 0) {
initOut();
out.write(c);
}
else {
if (nextChar >= bufferSize)
if (autoFlush)
flushBuffer();
else
bufferOverflow();
cb[nextChar++] = (char) c;
}
}
}
/**
* Our own little min method, to avoid loading java.lang.Math if we've run
* out of file descriptors and we're trying to print a stack trace.
*/
private int min(int a, int b) {
if (a < b) return a;
return b;
}
/**
* Write a portion of an array of characters.
*
* <p> Ordinarily this method stores characters from the given array into
* this stream's buffer, flushing the buffer to the underlying stream as
* needed. If the requested length is at least as large as the buffer,
* however, then this method will flush the buffer and write the characters
* directly to the underlying stream. Thus redundant
* <code>DiscardableBufferedWriter</code>s will not copy data unnecessarily.
*
* @param cbuf A character array
* @param off Offset from which to start reading characters
* @param len Number of characters to write
*
*/
public void write(char cbuf[], int off, int len)
throws IOException
{
synchronized (lock) {
ensureOpen();
if (bufferSize == 0) {
initOut();
out.write(cbuf, off, len);
return;
}
if ((off < 0) || (off > cbuf.length) || (len < 0) ||
((off + len) > cbuf.length) || ((off + len) < 0)) {
throw new IndexOutOfBoundsException();
} else if (len == 0) {
return;
}
if (len >= bufferSize) {
/* If the request length exceeds the size of the output buffer,
flush the buffer and then write the data directly. In this
way buffered streams will cascade harmlessly. */
if (autoFlush)
flushBuffer();
else
bufferOverflow();
initOut();
out.write(cbuf, off, len);
return;
}
int b = off, t = off + len;
while (b < t) {
int d = min(bufferSize - nextChar, t - b);
System.arraycopy(cbuf, b, cb, nextChar, d);
b += d;
nextChar += d;
if (nextChar >= bufferSize)
if (autoFlush)
flushBuffer();
else
bufferOverflow();
}
}
}
/**
* Write an array of characters. This method cannot be inherited from the
* Writer class because it must suppress I/O exceptions.
*/
public void write(char buf[]) throws IOException {
write(buf, 0, buf.length);
}
/**
* Write a portion of a String.
*
* @param s String to be written
* @param off Offset from which to start reading characters
* @param len Number of characters to be written
*
*/
public void write(String s, int off, int len) throws IOException {
synchronized (lock) {
ensureOpen();
if (bufferSize == 0) {
initOut();
out.write(s, off, len);
return;
}
int b = off, t = off + len;
while (b < t) {
int d = min(bufferSize - nextChar, t - b);
s.getChars(b, b + d, cb, nextChar);
b += d;
nextChar += d;
if (nextChar >= bufferSize)
if (autoFlush)
flushBuffer();
else
bufferOverflow();
}
}
}
/**
* Write a string. This method cannot be inherited from the Writer class
* because it must suppress I/O exceptions.
*/
public void write(String s) throws IOException {
write(s, 0, s.length());
}
static String lineSeparator = System.getProperty("line.separator");
/**
* Write a line separator. The line separator string is defined by the
* system property <tt>line.separator</tt>, and is not necessarily a single
* newline ('\n') character.
*
* @exception IOException If an I/O error occurs
*/
public void newLine() throws IOException {
synchronized (lock) {
write(lineSeparator);
}
}
/* Methods that do not terminate lines */
/**
* Print a boolean value. The string produced by <code>{@link
* java.lang.String#valueOf(boolean)}</code> is translated into bytes
* according to the platform's default character encoding, and these bytes
* are written in exactly the manner of the <code>{@link
* #write(int)}</code> method.
*
* @param b The <code>boolean</code> to be printed
*/
public void print(boolean b) throws IOException {
write(b ? "true" : "false");
}
/**
* Print a character. The character is translated into one or more bytes
* according to the platform's default character encoding, and these bytes
* are written in exactly the manner of the <code>{@link
* #write(int)}</code> method.
*
* @param c The <code>char</code> to be printed
*/
public void print(char c) throws IOException {
write(String.valueOf(c));
}
/**
* Print an integer. The string produced by <code>{@link
* java.lang.String#valueOf(int)}</code> is translated into bytes according
* to the platform's default character encoding, and these bytes are
* written in exactly the manner of the <code>{@link #write(int)}</code>
* method.
*
* @param i The <code>int</code> to be printed
* @see java.lang.Integer#toString(int)
*/
public void print(int i) throws IOException {
write(String.valueOf(i));
}
/**
* Print a long integer. The string produced by <code>{@link
* java.lang.String#valueOf(long)}</code> is translated into bytes
* according to the platform's default character encoding, and these bytes
* are written in exactly the manner of the <code>{@link #write(int)}</code>
* method.
*
* @param l The <code>long</code> to be printed
* @see java.lang.Long#toString(long)
*/
public void print(long l) throws IOException {
write(String.valueOf(l));
}
/**
* Print a floating-point number. The string produced by <code>{@link
* java.lang.String#valueOf(float)}</code> is translated into bytes
* according to the platform's default character encoding, and these bytes
* are written in exactly the manner of the <code>{@link #write(int)}</code>
* method.
*
* @param f The <code>float</code> to be printed
* @see java.lang.Float#toString(float)
*/
public void print(float f) throws IOException {
write(String.valueOf(f));
}
/**
* Print a double-precision floating-point number. The string produced by
* <code>{@link java.lang.String#valueOf(double)}</code> is translated into
* bytes according to the platform's default character encoding, and these
* bytes are written in exactly the manner of the <code>{@link
* #write(int)}</code> method.
*
* @param d The <code>double</code> to be printed
* @see java.lang.Double#toString(double)
*/
public void print(double d) throws IOException {
write(String.valueOf(d));
}
/**
* Print an array of characters. The characters are converted into bytes
* according to the platform's default character encoding, and these bytes
* are written in exactly the manner of the <code>{@link #write(int)}</code>
* method.
*
* @param s The array of chars to be printed
*
* @throws NullPointerException If <code>s</code> is <code>null</code>
*/
public void print(char s[]) throws IOException {
write(s);
}
/**
* Print a string. If the argument is <code>null</code> then the string
* <code>"null"</code> is printed. Otherwise, the string's characters are
* converted into bytes according to the platform's default character
* encoding, and these bytes are written in exactly the manner of the
* <code>{@link #write(int)}</code> method.
*
* @param s The <code>String</code> to be printed
*/
public void print(String s) throws IOException {
if (s == null) {
s = "null";
}
write(s);
}
/**
* Print an object. The string produced by the <code>{@link
* java.lang.String#valueOf(Object)}</code> method is translated into bytes
* according to the platform's default character encoding, and these bytes
* are written in exactly the manner of the <code>{@link #write(int)}</code>
* method.
*
* @param obj The <code>Object</code> to be printed
* @see java.lang.Object#toString()
*/
public void print(Object obj) throws IOException {
write(String.valueOf(obj));
}
/* Methods that do terminate lines */
/**
* Terminate the current line by writing the line separator string. The
* line separator string is defined by the system property
* <code>line.separator</code>, and is not necessarily a single newline
* character (<code>'\n'</code>).
*
* Need to change this from PrintWriter because the default
* println() writes to the sink directly instead of through the
* write method...
*/
public void println() throws IOException {
newLine();
}
/**
* Print a boolean value and then terminate the line. This method behaves
* as though it invokes <code>{@link #print(boolean)}</code> and then
* <code>{@link #println()}</code>.
*/
public void println(boolean x) throws IOException {
synchronized (lock) {
print(x);
println();
}
}
/**
* Print a character and then terminate the line. This method behaves as
* though it invokes <code>{@link #print(char)}</code> and then <code>{@link
* #println()}</code>.
*/
public void println(char x) throws IOException {
synchronized (lock) {
print(x);
println();
}
}
/**
* Print an integer and then terminate the line. This method behaves as
* though it invokes <code>{@link #print(int)}</code> and then <code>{@link
* #println()}</code>.
*/
public void println(int x) throws IOException {
synchronized (lock) {
print(x);
println();
}
}
/**
* Print a long integer and then terminate the line. This method behaves
* as though it invokes <code>{@link #print(long)}</code> and then
* <code>{@link #println()}</code>.
*/
public void println(long x) throws IOException {
synchronized (lock) {
print(x);
println();
}
}
/**
* Print a floating-point number and then terminate the line. This method
* behaves as though it invokes <code>{@link #print(float)}</code> and then
* <code>{@link #println()}</code>.
*/
public void println(float x) throws IOException {
synchronized (lock) {
print(x);
println();
}
}
/**
* Print a double-precision floating-point number and then terminate the
* line. This method behaves as though it invokes <code>{@link
* #print(double)}</code> and then <code>{@link #println()}</code>.
*/
public void println(double x) throws IOException {
synchronized (lock) {
print(x);
println();
}
}
/**
* Print an array of characters and then terminate the line. This method
* behaves as though it invokes <code>{@link #print(char[])}</code> and then
* <code>{@link #println()}</code>.
*/
public void println(char x[]) throws IOException {
synchronized (lock) {
print(x);
println();
}
}
/**
* Print a String and then terminate the line. This method behaves as
* though it invokes <code>{@link #print(String)}</code> and then
* <code>{@link #println()}</code>.
*/
public void println(String x) throws IOException {
synchronized (lock) {
print(x);
println();
}
}
/**
* Print an Object and then terminate the line. This method behaves as
* though it invokes <code>{@link #print(Object)}</code> and then
* <code>{@link #println()}</code>.
*/
public void println(Object x) throws IOException {
synchronized (lock) {
print(x);
println();
}
}
/** Package-level access
*/
void recycle() {
flushed = false;
nextChar = 0;
}
}