/**
* Copyright (c) 2002-2010 "Neo Technology,"
* Network Engine for Objects in Lund AB [http://neotechnology.com]
*
* This file is part of Neo4j.
*
* Neo4j is free software: you can redistribute it and/or modify
* it under the terms of the GNU Affero General Public License as
* published by the Free Software Foundation, either version 3 of the
* License, or (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU Affero General Public License for more details.
*
* You should have received a copy of the GNU Affero General Public License
* along with this program. If not, see <http://www.gnu.org/licenses/>.
*/
package org.neo4j.shell.apps;
import org.neo4j.helpers.Service;
import org.neo4j.shell.App;
import org.neo4j.shell.AppCommandParser;
import org.neo4j.shell.Output;
import org.neo4j.shell.Session;
import org.neo4j.shell.ShellException;
import org.neo4j.shell.impl.AbstractApp;
/**
* Mimics the Bash application "export" and uses the client session
* {@link Session} as the data container.
*/
@Service.Implementation( App.class )
public class Export extends AbstractApp
{
@Override
public String getDescription()
{
return "Sets an environment variable. Usage: export <key>=<value>\n" +
"F.ex: export NAME=\"Mattias Persson\"";
}
public static String[] splitInKeyEqualsValue( String string )
throws ShellException
{
int index = string.indexOf( '=' );
if ( index == -1 )
{
throw new ShellException( "Invalid format <key>=<value>" );
}
String key = string.substring( 0, index );
String value = string.substring( index + 1 );
if ( value.startsWith( "'" ) || value.startsWith( "\"" ) )
{
value = value.substring( 1 );
}
if ( value.endsWith( "'" ) || value.endsWith( "\"" ) )
{
value = value.substring( 0, value.length() - 1 );
}
return new String[] { key, value };
}
public String execute( AppCommandParser parser, Session session,
Output out ) throws ShellException
{
String[] keyValue = splitInKeyEqualsValue( parser.getLineWithoutApp() );
String key = keyValue[ 0 ];
String value = keyValue[ 1 ];
if ( value == null || value.trim().length() == 0 )
{
safeRemove( session, key );
}
else
{
safeSet( session, key, value );
}
return null;
}
}