/*
* 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
* <http://www.jxta.org/>.
*
* This license is based on the BSD license adopted by the Apache Foundation.
*
* $Id: exportfile.java,v 1.15 2007/02/09 23:12:46 hamada Exp $
*/
package net.jxta.impl.shell.bin.exportfile;
import net.jxta.document.Document;
import net.jxta.impl.shell.GetOpt;
import net.jxta.impl.shell.ShellApp;
import net.jxta.impl.shell.ShellEnv;
import net.jxta.impl.shell.ShellObject;
import java.io.File;
import java.io.FileOutputStream;
import java.io.IOException;
import java.io.OutputStream;
/**
* 'exportfile' Shell command to save an environment variable or stream to a
* file.
*/
public class exportfile extends ShellApp {
/**
* {@inheritDoc}
*/
public int startApp(String[] args) {
String filename = null;
String envName;
ShellEnv env = getEnv();
GetOpt options = new GetOpt(args, 0, "f:");
while (true) {
int option;
try {
option = options.getNextOption();
} catch (IllegalArgumentException badopt) {
consoleMessage("Illegal argument :" + badopt);
return syntaxError();
}
if (-1 == option) {
break;
}
switch (option) {
// support the "legacy" varient of this command.
case'f':
filename = options.getOptionArg();
break;
default:
consoleMessage("Unrecognized option");
return syntaxError();
}
}
if (null == filename) {
filename = options.getNextParameter();
if (null == filename) {
consoleMessage("Missing <filename> parameter");
return syntaxError();
}
}
envName = options.getNextParameter();
if (null != options.getNextParameter()) {
consoleMessage("Unsupported parameter");
return syntaxError();
}
File file = new File(filename);
OutputStream op = null;
try {
op = new FileOutputStream(file);
if (null != envName) {
ShellObject obj = env.get(envName);
if (!Document.class.isAssignableFrom(obj.getObjectClass())) {
consoleMessage("Cannot export object of type '" + obj.getObjectClass().getName() + "'");
return ShellApp.appMiscError;
}
Document doc = (Document) obj.getObject();
doc.sendToStream(op);
} else {
String line;
do {
try {
line = waitForInput();
} catch (IOException failed) {
line = null;
}
if (line != null) {
op.write(line.getBytes());
}
} while (null != line);
}
} catch (IOException failure) {
printStackTrace(" ", failure);
return ShellApp.appMiscError;
} finally {
if (null != op) {
try {
op.close();
} catch (IOException ioe) {
//ignored
}
}
}
return ShellApp.appNoError;
}
private int syntaxError() {
consoleMessage("usage : exportfile <filename> <env>");
return ShellApp.appParamError;
}
/**
* {@inheritDoc}
*/
@Override
public String getDescription() {
return "Export enviroment variable to an external file";
}
/**
* {@inheritDoc}
*/
@Override
public void help() {
println("NAME");
println(" exportfile - " + getDescription());
println(" ");
println("SYNOPSIS");
println(" exportfile <filename> <env>");
println(" ");
println("DESCRIPTION");
println("'exportfile' exports the content of a Shell environment variable");
println("into an external file. The exported object is stored in the");
println("supplied filename argument.");
println("If no variable name is given, the 'stdin' pipe is used to read");
println("data and saved it into the file.");
println("'exportfile' is the reverse operation of 'importfile'");
println(" ");
println("EXAMPLE");
println(" JXTA> exportfile /home/tra/myfile myfile");
println(" ");
println("This command saves into the file '/home/tra/myfile' the content");
println("of the 'myfile' environment variable");
println(" ");
println("SEE ALSO");
println(" importfile ");
}
}