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Merge pull request #12 from ruboto/without_jruby-jars
* Issue #6 Port to Ruboto Core
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<?xml version="1.0" encoding="UTF-8"?> | ||
<projectDescription> | ||
<name>ruboto-irb</name> | ||
<comment></comment> | ||
<projects> | ||
</projects> | ||
<buildSpec> | ||
</buildSpec> | ||
<natures> | ||
</natures> | ||
</projectDescription> |
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#require 'ruboto/activity' | ||
#require 'ruboto/widget' | ||
#require 'ruboto/util/toast' | ||
# | ||
#ruboto_import_widgets :Button, :LinearLayout, :TextView | ||
# | ||
#$activity.start_ruboto_activity "$sample_activity" do | ||
# setTitle 'This is the Title' | ||
# | ||
# def on_create(bundle) | ||
# self.content_view = | ||
# linear_layout(:orientation => :vertical) do | ||
# @text_view = text_view :text => 'What hath Matz wrought?', :id => 42 | ||
# button :text => 'M-x butterfly', :width => :wrap_content, :id => 43, | ||
# :on_click_listener => @handle_click | ||
# end | ||
# end | ||
# | ||
# @handle_click = proc do |view| | ||
# @text_view.text = 'What hath Matz wrought!' | ||
# toast 'Flipped a bit via butterfly' | ||
# end | ||
#end |
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/** | ||
* **** BEGIN LICENSE BLOCK ***** | ||
* Version: CPL 1.0/GPL 2.0/LGPL 2.1 | ||
* | ||
* The contents of this file are subject to the Common Public | ||
* License Version 1.0 (the "License"); you may not use this file | ||
* except in compliance with the License. You may obtain a copy of | ||
* the License at http://www.eclipse.org/legal/cpl-v10.html | ||
* | ||
* Software distributed under the License is distributed on an "AS | ||
* IS" basis, WITHOUT WARRANTY OF ANY KIND, either express or | ||
* implied. See the License for the specific language governing | ||
* rights and limitations under the License. | ||
* | ||
* Copyright (C) 2009 Yoko Harada <yokolet@gmail.com> | ||
* | ||
* Alternatively, the contents of this file may be used under the terms of | ||
* either of the GNU General Public License Version 2 or later (the "GPL"), | ||
* or the GNU Lesser General Public License Version 2.1 or later (the "LGPL"), | ||
* in which case the provisions of the GPL or the LGPL are applicable instead | ||
* of those above. If you wish to allow use of your version of this file only | ||
* under the terms of either the GPL or the LGPL, and not to allow others to | ||
* use your version of this file under the terms of the CPL, indicate your | ||
* decision by deleting the provisions above and replace them with the notice | ||
* and other provisions required by the GPL or the LGPL. If you do not delete | ||
* the provisions above, a recipient may use your version of this file under | ||
* the terms of any one of the CPL, the GPL or the LGPL. | ||
* **** END LICENSE BLOCK ***** | ||
*/ | ||
package org.jruby.embed.io; | ||
|
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import java.io.IOException; | ||
import java.io.OutputStream; | ||
import java.io.OutputStreamWriter; | ||
import java.io.Writer; | ||
import java.nio.ByteBuffer; | ||
import java.nio.CharBuffer; | ||
import java.nio.charset.Charset; | ||
import java.nio.charset.CharsetDecoder; | ||
import java.nio.charset.CoderResult; | ||
import java.nio.charset.CodingErrorAction; | ||
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/** | ||
* A WriterOutputStream converts java.io.Writer to java.io.OutputStream. | ||
* | ||
* @author Yoko Harada <yokolet@gmail.com> | ||
*/ | ||
public class WriterOutputStream extends OutputStream { | ||
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private final Writer writer; | ||
private boolean isOpen = true; | ||
private CharsetDecoder decoder; | ||
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/** | ||
* Creates WriterOutputStream from given java.io.Writer object with a default encoding. | ||
* | ||
* @param writer java.io.Writer object to be converted to. | ||
*/ | ||
public WriterOutputStream(Writer writer) { | ||
this(writer, null); | ||
} | ||
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/** | ||
* Creates WriterOutputStream from given java.io.Writer object with a specified encoding. | ||
* | ||
* @param writer java.io.Writer object to be converted to. | ||
*/ | ||
public WriterOutputStream(Writer writer, String encoding) { | ||
this.writer = writer; | ||
if (encoding == null && writer instanceof OutputStreamWriter) { | ||
// this encoding might be null when writer has been closed | ||
encoding = ((OutputStreamWriter) writer).getEncoding(); | ||
} | ||
if (encoding == null) { | ||
encoding = Charset.defaultCharset().name(); | ||
} else if (!Charset.isSupported(encoding)) { | ||
throw new IllegalArgumentException(encoding + " is not supported"); | ||
} | ||
decoder = Charset.forName(encoding).newDecoder(); | ||
decoder.onMalformedInput(CodingErrorAction.REPLACE); | ||
decoder.onUnmappableCharacter(CodingErrorAction.REPLACE); | ||
} | ||
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/** | ||
* Closes this output stream and releases any system resources | ||
* associated with this stream. The general contract of <code>close</code> | ||
* is that it closes the output stream. A closed stream cannot perform | ||
* output operations and cannot be reopened. | ||
* <p> | ||
* | ||
* @exception IOException if an I/O error occurs. | ||
*/ | ||
@Override | ||
public void close() throws IOException { | ||
synchronized (writer) { | ||
if (!isOpen) { | ||
throw new IOException("This stream has been already closed."); | ||
} | ||
isOpen = false; | ||
decoder = null; | ||
writer.close(); | ||
} | ||
} | ||
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/** | ||
* Flushes this output stream and forces any buffered output bytes | ||
* to be written out. The general contract of <code>flush</code> is | ||
* that calling it is an indication that, if any bytes previously | ||
* written have been buffered by the implementation of the output | ||
* stream, such bytes should immediately be written to their | ||
* intended destination. | ||
* <p> | ||
* If the intended destination of this stream is an abstraction provided by | ||
* the underlying operating system, for example a file, then flushing the | ||
* stream guarantees only that bytes previously written to the stream are | ||
* passed to the operating system for writing; it does not guarantee that | ||
* they are actually written to a physical device such as a disk drive. | ||
* <p> | ||
* | ||
* @exception IOException if an I/O error occurs. | ||
*/ | ||
@Override | ||
public void flush() throws IOException { | ||
synchronized (writer) { | ||
if (!isOpen) { | ||
return; | ||
} | ||
writer.flush(); | ||
} | ||
} | ||
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/** | ||
* Writes the specified byte to this output stream. The general | ||
* contract for <code>write</code> is that one byte is written | ||
* to the output stream. The byte to be written is the eight | ||
* low-order bits of the argument <code>b</code>. The 24 | ||
* high-order bits of <code>b</code> are ignored. | ||
* | ||
* @param b the <code>byte</code>. | ||
* @exception IOException if an I/O error occurs. In particular, | ||
* an <code>IOException</code> may be thrown if the | ||
* output stream has been closed. | ||
*/ | ||
@Override | ||
public void write(int b) throws IOException { | ||
byte[] bb = new byte[]{(byte) b}; | ||
write(bb, 0, 1); | ||
} | ||
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/** | ||
* Writes <code>b.length</code> bytes from the specified byte array | ||
* to this output stream. The general contract for <code>write(b)</code> | ||
* is that it should have exactly the same effect as the call | ||
* <code>write(b, 0, b.length)</code>. | ||
* | ||
* @param b the data. | ||
* @exception IOException if an I/O error occurs. | ||
* @see java.io.OutputStream#write(byte[], int, int) | ||
*/ | ||
@Override | ||
public void write(byte[] b) throws IOException { | ||
write(b, 0, b.length); | ||
} | ||
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/** | ||
* Writes <code>len</code> bytes from the specified byte array | ||
* starting at offset <code>off</code> to this output stream. | ||
* The general contract for <code>write(b, off, len)</code> is that | ||
* some of the bytes in the array <code>b</code> are written to the | ||
* output stream in order; element <code>b[off]</code> is the first | ||
* byte written and <code>b[off+len-1]</code> is the last byte written | ||
* by this operation. | ||
* <p> | ||
* If <code>off</code> is negative, or <code>len</code> is negative, or | ||
* <code>off+len</code> is greater than the length of the array | ||
* <code>b</code>, then an <tt>IndexOutOfBoundsException</tt> is thrown. | ||
* | ||
* @param b the data. | ||
* @param off the start offset in the data. | ||
* @param len the number of bytes to write. | ||
* @exception IOException if an I/O error occurs. In particular, | ||
* an <code>IOException</code> is thrown if the output | ||
* stream is closed. | ||
*/ | ||
@Override | ||
public void write(byte[] b, int off, int len) throws IOException { | ||
synchronized (writer) { | ||
if (!isOpen) { | ||
return; | ||
} | ||
if (off < 0 || len <= 0 || (off + len) > b.length) { | ||
throw new IndexOutOfBoundsException(); | ||
} | ||
ByteBuffer bytes = ByteBuffer.wrap(b, off, len); | ||
CharBuffer chars = CharBuffer.allocate(len); | ||
byte2char(bytes, chars); | ||
char[] cbuf = new char[chars.length()]; | ||
chars.get(cbuf, 0, chars.length()); | ||
writer.write(cbuf); | ||
writer.flush(); | ||
} | ||
} | ||
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private void byte2char(ByteBuffer bytes, CharBuffer chars) throws IOException { | ||
decoder.reset(); | ||
chars.clear(); | ||
CoderResult result = decoder.decode(bytes, chars, true); | ||
if (result.isError() || result.isOverflow()) { | ||
throw new IOException(result.toString()); | ||
} else if (result.isUnderflow()) { | ||
chars.flip(); | ||
} | ||
} | ||
} |
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