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The JXTA Shell is a sample application that demonstrates key concepts
of JXTA JXSE. The JXTA Shell enables users to interact with the JXTA
platform through a command-line interpreter. Much like the UNIX® shell,
the JXTA Shell is useful for accessing and managing core platform objects
(peers, groups, pipes), debugging communications problems, checking the
status of peers and/or peer groups, and communicating with other JXTA
services and applications. As in UNIX®, the JXTA shell allows users to
"pipe" shell commands together connecting commands "on-the-fly." Pipes
in Project JXTA are useful for collecting information at one peer and
perhaps processing the command at another.
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/*
* Copyright (c) 2001 Sun Microsystems, Inc. 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 acknowledgment:
* "This product includes software developed by the
* Sun Microsystems, Inc. for Project JXTA."
* Alternately, this acknowledgment may appear in the software itself,
* if and wherever such third-party acknowledgments normally appear.
*
* 4. The names "Sun", "Sun Microsystems, Inc.", "JXTA" and "Project JXTA" must
* not be used to endorse or promote products derived from this
* software without prior written permission. For written
* permission, please contact Project JXTA at http://www.jxta.org.
*
* 5. Products derived from this software may not be called "JXTA",
* nor may "JXTA" appear in their name, without prior written
* permission of Sun.
*
* 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 SUN MICROSYSTEMS 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 Project JXTA. For more
* information on Project JXTA, please see
* parameter");
return syntaxError();
}
}
if (null == envName) {
envName = options.getNextParameter();
}
if (null != options.getNextParameter()) {
consoleMessage("Unsupported parameter");
return syntaxError();
}
if (null == envName) {
envName = getReturnVariable();
}
try {
File file = new File(filename);
long length = file.length();
InputStream ip = new FileInputStream(file);
if (length > 32) {
try {
XMLDocument doc = (XMLDocument) StructuredDocumentFactory.newStructuredDocument(MimeMediaType.XMLUTF8, ip);
env.add(envName, new ShellObject("XMLDocument", doc));
return ShellApp.appNoError;
} finally {
ip.close();
}
}
try {
byte[] buffer = new byte[(int) length];
DataInput dis = new DataInputStream(ip);
dis.readFully(buffer);
Document doc = new BinaryDocument(buffer);
env.add(envName, new ShellObject("Document", doc));
return ShellApp.appNoError;
} finally {
ip.close();
}
} catch (IOException failure) {
printStackTrace(" ", failure);
return ShellApp.appMiscError;
}
}
private int syntaxError() {
consoleMessage("usage : importfile ");
return ShellApp.appParamError;
}
/**
* {@inheritDoc}
*/
@Override
public String getDescription() {
return "Import an external file";
}
/**
* {@inheritDoc}
*/
@Override
public void help() {
println("NAME");
println(" importfile - " + getDescription());
println(" ");
println("SYNOPSIS");
println(" importfile ");
println(" ");
println("DESCRIPTION");
println("'importfile' imports an external file into a Document");
println("object stored in a Shell environment variable. The name of the");
println("environment variable is specified as an argument.");
println("'importfile' is the reverse operation of 'exportfile'");
println(" ");
println("EXAMPLE");
println(" JXTA> myfile = importfile /home/tra/myfile ");
println(" JXTA> cat myfile");
println(" ");
println("This command imports the file '/home/tra/myfile' into the");
println("'myfile' environment variable");
println(" ");
println("SEE ALSO");
println(" exportfile mkadv");
}
}