package org.neo4j.util.shell.apps;
import org.neo4j.util.shell.AbstractApp;
import org.neo4j.util.shell.AppCommandParser;
import org.neo4j.util.shell.Output;
import org.neo4j.util.shell.Session;
import org.neo4j.util.shell.ShellException;
/**
* Mimics the Bash application "export" and uses the client session
* {@link Session} as the data container.
*/
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 String execute( AppCommandParser parser, Session session,
Output out ) throws ShellException
{
StringBuffer buffer = new StringBuffer();
for ( String string : parser.arguments() )
{
buffer.append( string );
}
String string = buffer.toString();
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 == null || value.trim().length() == 0 )
{
safeRemove( session, key );
}
else
{
safeSet( session, key, value );
}
return null;
}
}