--- /dev/null
+//
+// ========================================================================
+// Copyright (c) 1995-2014 Mort Bay Consulting Pty. Ltd.
+// ------------------------------------------------------------------------
+// All rights reserved. This program and the accompanying materials
+// are made available under the terms of the Eclipse Public License v1.0
+// and Apache License v2.0 which accompanies this distribution.
+//
+// The Eclipse Public License is available at
+// http://www.eclipse.org/legal/epl-v10.html
+//
+// The Apache License v2.0 is available at
+// http://www.opensource.org/licenses/apache2.0.php
+//
+// You may elect to redistribute this code under either of these licenses.
+// ========================================================================
+//
+
+package org.eclipse.jetty.io;
+
+import java.io.BufferedWriter;
+import java.io.IOException;
+import java.io.InterruptedIOException;
+import java.io.OutputStream;
+import java.io.OutputStreamWriter;
+import java.io.PrintWriter;
+import java.io.Writer;
+
+import org.eclipse.jetty.util.log.Log;
+import org.eclipse.jetty.util.log.Logger;
+
+/* ------------------------------------------------------------ */
+/**
+ * A wrapper for the {@link java.io.PrintWriter} that re-throws the instances of
+ * {@link java.io.IOException} thrown by the underlying implementation of
+ * {@link java.io.Writer} as {@link RuntimeIOException} instances.
+ */
+public class UncheckedPrintWriter extends PrintWriter
+{
+ private static final Logger LOG = Log.getLogger(UncheckedPrintWriter.class);
+
+ private boolean _autoFlush = false;
+ private IOException _ioException;
+ private boolean _isClosed = false;
+
+ /* ------------------------------------------------------------ */
+ /**
+ * Line separator string. This is the value of the line.separator property
+ * at the moment that the stream was created.
+ */
+ private String _lineSeparator;
+
+ public UncheckedPrintWriter(Writer out)
+ {
+ this(out,false);
+ }
+
+ /* ------------------------------------------------------------ */
+ /**
+ * Create a new PrintWriter.
+ *
+ * @param out
+ * A character-output stream
+ * @param autoFlush
+ * A boolean; if true, the println() methods will flush the
+ * output buffer
+ */
+ public UncheckedPrintWriter(Writer out, boolean autoFlush)
+ {
+ super(out,autoFlush);
+ this._autoFlush = autoFlush;
+ this._lineSeparator = System.getProperty("line.separator");
+ }
+
+ /* ------------------------------------------------------------ */
+ /**
+ * Create a new PrintWriter, without automatic line flushing, from an
+ * existing OutputStream. This convenience constructor creates the necessary
+ * intermediate OutputStreamWriter, which will convert characters into bytes
+ * using the default character encoding.
+ *
+ * @param out
+ * An output stream
+ *
+ * @see java.io.OutputStreamWriter#OutputStreamWriter(java.io.OutputStream)
+ */
+ public UncheckedPrintWriter(OutputStream out)
+ {
+ this(out,false);
+ }
+
+ /* ------------------------------------------------------------ */
+ /**
+ * Create a new PrintWriter from an existing OutputStream. This convenience
+ * constructor creates the necessary intermediate OutputStreamWriter, which
+ * will convert characters into bytes using the default character encoding.
+ *
+ * @param out
+ * An output stream
+ * @param autoFlush
+ * A boolean; if true, the println() methods will flush the
+ * output buffer
+ *
+ * @see java.io.OutputStreamWriter#OutputStreamWriter(java.io.OutputStream)
+ */
+ public UncheckedPrintWriter(OutputStream out, boolean autoFlush)
+ {
+ this(new BufferedWriter(new OutputStreamWriter(out)),autoFlush);
+ }
+
+
+ /* ------------------------------------------------------------ */
+ public boolean checkError()
+ {
+ return _ioException!=null || super.checkError();
+ }
+
+ /* ------------------------------------------------------------ */
+ private void setError(Throwable th)
+ {
+
+ super.setError();
+
+ if (th instanceof IOException)
+ _ioException=(IOException)th;
+ else
+ {
+ _ioException=new IOException(String.valueOf(th));
+ _ioException.initCause(th);
+ }
+
+ LOG.debug(th);
+ }
+
+
+ @Override
+ protected void setError()
+ {
+ setError(new IOException());
+ }
+
+ /* ------------------------------------------------------------ */
+ /** Check to make sure that the stream has not been closed */
+ private void isOpen() throws IOException
+ {
+ if (_ioException!=null)
+ throw new RuntimeIOException(_ioException);
+
+ if (_isClosed)
+ throw new IOException("Stream closed");
+ }
+
+ /* ------------------------------------------------------------ */
+ /**
+ * Flush the stream.
+ */
+ @Override
+ public void flush()
+ {
+ try
+ {
+ synchronized (lock)
+ {
+ isOpen();
+ out.flush();
+ }
+ }
+ catch (IOException ex)
+ {
+ setError(ex);
+ }
+ }
+
+ /* ------------------------------------------------------------ */
+ /**
+ * Close the stream.
+ */
+ @Override
+ public void close()
+ {
+ try
+ {
+ synchronized (lock)
+ {
+ out.close();
+ _isClosed = true;
+ }
+ }
+ catch (IOException ex)
+ {
+ setError(ex);
+ }
+ }
+
+ /* ------------------------------------------------------------ */
+ /**
+ * Write a single character.
+ *
+ * @param c
+ * int specifying a character to be written.
+ */
+ @Override
+ public void write(int c)
+ {
+ try
+ {
+ synchronized (lock)
+ {
+ isOpen();
+ out.write(c);
+ }
+ }
+ catch (InterruptedIOException x)
+ {
+ Thread.currentThread().interrupt();
+ }
+ catch (IOException ex)
+ {
+ setError(ex);
+ }
+ }
+
+ /* ------------------------------------------------------------ */
+ /**
+ * Write a portion of an array of characters.
+ *
+ * @param buf
+ * Array of characters
+ * @param off
+ * Offset from which to start writing characters
+ * @param len
+ * Number of characters to write
+ */
+ @Override
+ public void write(char buf[], int off, int len)
+ {
+ try
+ {
+ synchronized (lock)
+ {
+ isOpen();
+ out.write(buf,off,len);
+ }
+ }
+ catch (InterruptedIOException x)
+ {
+ Thread.currentThread().interrupt();
+ }
+ catch (IOException ex)
+ {
+ setError(ex);
+ }
+ }
+
+ /* ------------------------------------------------------------ */
+ /**
+ * Write an array of characters. This method cannot be inherited from the
+ * Writer class because it must suppress I/O exceptions.
+ *
+ * @param buf
+ * Array of characters to be written
+ */
+ @Override
+ public void write(char buf[])
+ {
+ this.write(buf,0,buf.length);
+ }
+
+ /* ------------------------------------------------------------ */
+ /**
+ * Write a portion of a string.
+ *
+ * @param s
+ * A String
+ * @param off
+ * Offset from which to start writing characters
+ * @param len
+ * Number of characters to write
+ */
+ @Override
+ public void write(String s, int off, int len)
+ {
+ try
+ {
+ synchronized (lock)
+ {
+ isOpen();
+ out.write(s,off,len);
+ }
+ }
+ catch (InterruptedIOException x)
+ {
+ Thread.currentThread().interrupt();
+ }
+ catch (IOException ex)
+ {
+ setError(ex);
+ }
+ }
+
+ /* ------------------------------------------------------------ */
+ /**
+ * Write a string. This method cannot be inherited from the Writer class
+ * because it must suppress I/O exceptions.
+ *
+ * @param s
+ * String to be written
+ */
+ @Override
+ public void write(String s)
+ {
+ this.write(s,0,s.length());
+ }
+
+ private void newLine()
+ {
+ try
+ {
+ synchronized (lock)
+ {
+ isOpen();
+ out.write(_lineSeparator);
+ if (_autoFlush)
+ out.flush();
+ }
+ }
+ catch (InterruptedIOException x)
+ {
+ Thread.currentThread().interrupt();
+ }
+ catch (IOException ex)
+ {
+ setError(ex);
+ }
+ }
+
+ /* ------------------------------------------------------------ */
+ /**
+ * 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
+ */
+ @Override
+ public void print(boolean b)
+ {
+ this.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
+ */
+ @Override
+ public void print(char c)
+ {
+ this.write(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)
+ */
+ @Override
+ public void print(int i)
+ {
+ this.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)
+ */
+ @Override
+ public void print(long l)
+ {
+ this.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)
+ */
+ @Override
+ public void print(float f)
+ {
+ this.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)
+ */
+ @Override
+ public void print(double d)
+ {
+ this.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>
+ */
+ @Override
+ public void print(char s[])
+ {
+ this.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
+ */
+ @Override
+ public void print(String s)
+ {
+ if (s == null)
+ {
+ s = "null";
+ }
+ this.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()
+ */
+ @Override
+ public void print(Object obj)
+ {
+ this.write(String.valueOf(obj));
+ }
+
+ /* ------------------------------------------------------------ */
+ /**
+ * 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>).
+ */
+ @Override
+ public void println()
+ {
+ this.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>.
+ *
+ * @param x
+ * the <code>boolean</code> value to be printed
+ */
+ @Override
+ public void println(boolean x)
+ {
+ synchronized (lock)
+ {
+ this.print(x);
+ this.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>.
+ *
+ * @param x
+ * the <code>char</code> value to be printed
+ */
+ @Override
+ public void println(char x)
+ {
+ synchronized (lock)
+ {
+ this.print(x);
+ this.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>.
+ *
+ * @param x
+ * the <code>int</code> value to be printed
+ */
+ @Override
+ public void println(int x)
+ {
+ synchronized (lock)
+ {
+ this.print(x);
+ this.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>.
+ *
+ * @param x
+ * the <code>long</code> value to be printed
+ */
+ @Override
+ public void println(long x)
+ {
+ synchronized (lock)
+ {
+ this.print(x);
+ this.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>.
+ *
+ * @param x
+ * the <code>float</code> value to be printed
+ */
+ @Override
+ public void println(float x)
+ {
+ synchronized (lock)
+ {
+ this.print(x);
+ this.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>.
+ *
+ * @param x
+ * the <code>double</code> value to be printed
+ */
+ /* ------------------------------------------------------------ */
+ @Override
+ public void println(double x)
+ {
+ synchronized (lock)
+ {
+ this.print(x);
+ this.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>.
+ *
+ * @param x
+ * the array of <code>char</code> values to be printed
+ */
+ @Override
+ public void println(char x[])
+ {
+ synchronized (lock)
+ {
+ this.print(x);
+ this.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>.
+ *
+ * @param x
+ * the <code>String</code> value to be printed
+ */
+ @Override
+ public void println(String x)
+ {
+ synchronized (lock)
+ {
+ this.print(x);
+ this.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>.
+ *
+ * @param x
+ * the <code>Object</code> value to be printed
+ */
+ @Override
+ public void println(Object x)
+ {
+ synchronized (lock)
+ {
+ this.print(x);
+ this.println();
+ }
+ }
+}
projects / gigi.git / blobdiff