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https://github.com/eclipse-cdt/cdt
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NEW - bug 224989: Support contributed services over Terminal connections
https://bugs.eclipse.org/bugs/show_bug.cgi?id=224989
This commit is contained in:
Michael Scharf
parent
b1a9596b9d
commit
c18cb2eaa9
2 changed files with 338 additions and 0 deletions
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/*******************************************************************************
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* Copyright (c) 2007 Wind River Systems, Inc. and others.
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* All rights reserved. This program and the accompanying materials
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* are made available under the terms of the Eclipse Public License v1.0
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* which accompanies this distribution, and is available at
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* http://www.eclipse.org/legal/epl-v10.html
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*
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* Contributors:
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* Michael Scharf (Wind River) - initial API and implementation
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*******************************************************************************/
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package org.eclipse.tm.internal.terminal.connector;
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import java.io.ByteArrayOutputStream;
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import java.io.IOException;
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import java.io.OutputStream;
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import java.io.UnsupportedEncodingException;
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import junit.framework.TestCase;
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public class TerminalToRemoteInjectionOutputStreamTest extends TestCase {
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final static String ENCODING="UTF-8";
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/**
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* This class escapes strings coming on the original
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* terminal..
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*
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*/
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class CleverInterceptor extends TerminalToRemoteInjectionOutputStream.Interceptor {
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public void close() throws IOException {
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}
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public void write(int b) throws IOException {
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fOriginal.write('[');
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fOriginal.write(b);
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fOriginal.write(']');
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}
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public void write(byte[] b, int off, int len) throws IOException {
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fOriginal.write('[');
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fOriginal.write(b,off,len);
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fOriginal.write(']');
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}
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}
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class NullInterceptor extends TerminalToRemoteInjectionOutputStream.Interceptor {
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}
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public void testClose() throws UnsupportedEncodingException, IOException {
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ByteArrayOutputStream bs=new ByteArrayOutputStream();
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TerminalToRemoteInjectionOutputStream s= new TerminalToRemoteInjectionOutputStream(bs);
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s.write("begin:".getBytes(ENCODING));
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assertEquals("begin:", new String(bs.toByteArray(),ENCODING));
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OutputStream os1=s.grabOutput();
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os1.write('x');
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s.write('A');
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os1.write('y');
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s.write('B');
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os1.close();
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s.write('-');
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OutputStream os=s.grabOutput();
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// make sure the closed output does not inject anything
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try {
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os1.write('k');
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fail("...");
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} catch (Exception e) {
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}
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os.write('X');
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s.write('a');
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os.write('Y');
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// make sure the closed output does not inject anything
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try {
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os1.write('l');
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fail("...");
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} catch (Exception e) {
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}
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s.write('b');
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os.close();
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assertEquals("begin:xyAB-XYab", new String(bs.toByteArray(),ENCODING));
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}
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public void testFlush() {
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}
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public void testWriteInt() throws UnsupportedEncodingException, IOException {
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ByteArrayOutputStream bs=new ByteArrayOutputStream();
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TerminalToRemoteInjectionOutputStream s= new TerminalToRemoteInjectionOutputStream(bs);
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s.write("begin:".getBytes(ENCODING));
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assertEquals("begin:", new String(bs.toByteArray(),ENCODING));
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OutputStream os=s.grabOutput();
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os.write('x');
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s.write('A');
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os.write('y');
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s.write('B');
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s.close();
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assertEquals("begin:xyAB", new String(bs.toByteArray(),ENCODING));
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}
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public void testWriteByteArray() {
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}
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public void testWriteByteArrayIntInt() {
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}
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public void testGrabOutput() throws UnsupportedEncodingException, IOException {
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ByteArrayOutputStream bs=new ByteArrayOutputStream();
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TerminalToRemoteInjectionOutputStream s= new TerminalToRemoteInjectionOutputStream(bs);
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s.write("begin:".getBytes(ENCODING));
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assertEquals("begin:", new String(bs.toByteArray(),ENCODING));
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OutputStream os1=s.grabOutput();
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OutputStream os2;
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try {
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os2=s.grabOutput();
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fail("should fail until the foirst output is closed");
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} catch (IOException e) {
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}
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os1.close();
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os2=s.grabOutput();
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assertEquals("begin:", new String(bs.toByteArray(),ENCODING));
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os2.write("Test".getBytes(ENCODING));
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assertEquals("begin:Test", new String(bs.toByteArray(),ENCODING));
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s.write(" west".getBytes(ENCODING));
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assertEquals("begin:Test", new String(bs.toByteArray(),ENCODING));
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os2.write(" the".getBytes(ENCODING));
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assertEquals("begin:Test the", new String(bs.toByteArray(),ENCODING));
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os2.close();
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assertEquals("begin:Test the west", new String(bs.toByteArray(),ENCODING));
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s.write('!');
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assertEquals("begin:Test the west!", new String(bs.toByteArray(),ENCODING));
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}
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public void testGrabOutputWithCleverInterceptor() throws UnsupportedEncodingException, IOException {
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ByteArrayOutputStream bs=new ByteArrayOutputStream();
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TerminalToRemoteInjectionOutputStream s= new TerminalToRemoteInjectionOutputStream(bs);
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s.write("begin:".getBytes(ENCODING));
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assertEquals("begin:", new String(bs.toByteArray(),ENCODING));
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// the injector escapes the output coming from the main stream
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OutputStream os=s.grabOutput(new CleverInterceptor());
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assertEquals("begin:", new String(bs.toByteArray(),ENCODING));
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os.write("Test".getBytes(ENCODING));
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assertEquals("begin:Test", new String(bs.toByteArray(),ENCODING));
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s.write(" west".getBytes(ENCODING));
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assertEquals("begin:Test[ west]", new String(bs.toByteArray(),ENCODING));
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os.write(" the".getBytes(ENCODING));
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assertEquals("begin:Test[ west] the", new String(bs.toByteArray(),ENCODING));
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s.write('x');
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assertEquals("begin:Test[ west] the[x]", new String(bs.toByteArray(),ENCODING));
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os.close();
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assertEquals("begin:Test[ west] the[x]", new String(bs.toByteArray(),ENCODING));
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s.write('!');
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assertEquals("begin:Test[ west] the[x]!", new String(bs.toByteArray(),ENCODING));
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}
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public void testGrabOutputWithNullInterceptor() throws UnsupportedEncodingException, IOException {
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ByteArrayOutputStream bs=new ByteArrayOutputStream();
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TerminalToRemoteInjectionOutputStream s= new TerminalToRemoteInjectionOutputStream(bs);
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s.write("begin:".getBytes(ENCODING));
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assertEquals("begin:", new String(bs.toByteArray(),ENCODING));
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// bytes written to the main stream are ignored while the injector
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// is active
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OutputStream os=s.grabOutput(new NullInterceptor());
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assertEquals("begin:", new String(bs.toByteArray(),ENCODING));
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os.write("Test".getBytes(ENCODING));
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assertEquals("begin:Test", new String(bs.toByteArray(),ENCODING));
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s.write(" west".getBytes(ENCODING));
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assertEquals("begin:Test", new String(bs.toByteArray(),ENCODING));
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os.write(" the".getBytes(ENCODING));
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assertEquals("begin:Test the", new String(bs.toByteArray(),ENCODING));
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s.write('x');
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assertEquals("begin:Test the", new String(bs.toByteArray(),ENCODING));
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os.close();
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assertEquals("begin:Test the", new String(bs.toByteArray(),ENCODING));
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s.write('!');
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assertEquals("begin:Test the!", new String(bs.toByteArray(),ENCODING));
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}
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}
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@ -0,0 +1,163 @@
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/*******************************************************************************
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* Copyright (c) 2007 Wind River Systems, Inc. and others.
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* All rights reserved. This program and the accompanying materials
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* are made available under the terms of the Eclipse Public License v1.0
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* which accompanies this distribution, and is available at
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* http://www.eclipse.org/legal/epl-v10.html
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*
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* Contributors:
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* Michael Scharf (Wind River) - initial API and implementation
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*******************************************************************************/
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package org.eclipse.tm.internal.terminal.connector;
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import java.io.ByteArrayOutputStream;
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import java.io.FilterOutputStream;
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import java.io.IOException;
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import java.io.OutputStream;
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class TerminalToRemoteInjectionOutputStream extends FilterOutputStream {
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/**
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* This class handles bytes written to the {@link TerminalToRemoteInjectionOutputStream}.
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*/
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static abstract public class Interceptor {
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protected OutputStream fOriginal;
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/**
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* @param original the injection into the original stream begins
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* @throws IOException
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*/
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public void begin(OutputStream original) throws IOException {
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fOriginal=original;
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}
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/**
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* @param b a byte was written to the {@link TerminalToRemoteInjectionOutputStream}.
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* @throws IOException
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*/
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public void write(int b) throws IOException {
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}
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/**
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* @param b bytes written to the {@link TerminalToRemoteInjectionOutputStream}.
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* @param off the start offset in the data.
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* @param len the number of bytes to write.
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* @throws IOException
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*/
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public void write(byte[] b, int off, int len) throws IOException {
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}
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/**
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* The injection into the normal stream ends.
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* @throws IOException
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*/
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public void close() throws IOException {
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}
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public void flush() {
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}
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}
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static public class BufferInterceptor extends Interceptor {
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private final ByteArrayOutputStream fBuffer=new ByteArrayOutputStream();
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public void close() throws IOException {
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fOriginal.write(fBuffer.toByteArray());
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}
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public void write(byte[] b, int off, int len) throws IOException {
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fBuffer.write(b, off, len);
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}
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public void write(int b) throws IOException {
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fBuffer.write(b);
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}
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}
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private class TerminalFilterOutputStream extends OutputStream {
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final private Object fLock=TerminalToRemoteInjectionOutputStream.this;
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public void close() throws IOException {
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synchronized(fLock) {
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if(fInjection==this) {
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flush();
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ungrabOutput();
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}
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}
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}
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public void write(byte[] b, int off, int len) throws IOException {
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synchronized(fLock) {
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checkStream();
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out.write(b, off, len);
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}
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}
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public void write(byte[] b) throws IOException {
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synchronized(fLock) {
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checkStream();
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out.write(b);
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}
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}
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public void flush() throws IOException {
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synchronized(fLock) {
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checkStream();
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out.flush();
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}
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}
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public void write(int b) throws IOException {
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synchronized(fLock) {
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checkStream();
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out.write(b);
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}
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}
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private void checkStream() throws IOException {
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if(fInjection!=this)
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throw new IOException("Stream is closed"); //$NON-NLS-1$
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}
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}
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private Interceptor fInterceptor;
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private TerminalFilterOutputStream fInjection;
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public TerminalToRemoteInjectionOutputStream(OutputStream out) {
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super(out);
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}
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synchronized protected void ungrabOutput() throws IOException {
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if(fInterceptor!=null) {
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fInterceptor.close();
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fInterceptor=null;
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fInjection=null;
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}
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}
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/**
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* There can only be one injection stream active at a time. You must call close on the
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* returned output stream to end the injection.
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* @param interceptor This is used handle bytes sent while the injection stream is active.
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* @return a output stream that can be used to write to the decorated stream.
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* @throws IOException
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*/
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public synchronized OutputStream grabOutput(Interceptor interceptor) throws IOException {
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if(fInjection!=null) {
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throw new IOException("Buffer in use"); //$NON-NLS-1$
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}
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fInterceptor=interceptor;
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fInterceptor.begin(out);
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fInjection=new TerminalFilterOutputStream();
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return fInjection;
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}
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/** See {@link #grabOutput(TerminalToRemoteInjectionOutputStream.Interceptor)}.
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* @return injection output stream
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* @throws IOException
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*/
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public synchronized OutputStream grabOutput() throws IOException {
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return grabOutput(new BufferInterceptor());
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}
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synchronized public void close() throws IOException {
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if(fInjection!=null) {
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fInjection.close();
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}
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super.close();
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}
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synchronized public void flush() throws IOException {
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if(fInterceptor!=null)
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fInterceptor.flush();
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out.flush();
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}
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synchronized public void write(byte[] b, int off, int len) throws IOException {
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if(fInterceptor!=null)
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fInterceptor.write(b, off, len);
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else
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out.write(b, off, len);
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}
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synchronized public void write(int b) throws IOException {
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if(fInterceptor!=null)
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fInterceptor.write(b);
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else
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out.write(b);
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}
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}
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