org.codehaus.plexus.util.cli.shell.BourneShell Maven / Gradle / Ivy

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A collection of various utility classes to ease working with strings, files, command lines, XML and more.

There is a newer version: 4.0.2

package org.codehaus.plexus.util.cli.shell;

/*
 * Copyright 2007 The Codehaus Foundation.
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *      http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */
import org.codehaus.plexus.util.StringUtils;

import java.util.ArrayList;
import java.util.List;

/**
 * @author Jason van Zyl
 *  @version $Id: BourneShell.java 7209 2008-02-20 00:45:04Z jdcasey $
 */
public class BourneShell
    extends Shell
{
    private static final char[] BASH_QUOTING_TRIGGER_CHARS = { ' ', '$' };

    public BourneShell()
    {
        this( false );
    }

    public BourneShell( boolean isLoginShell )
    {
        setShellCommand( "/bin/sh" );
        setArgumentQuoteDelimiter( '\'' );
        setExecutableQuoteDelimiter( '\"' );
        setSingleQuotedArgumentEscaped( true );
        setSingleQuotedExecutableEscaped( false );
        setQuotedExecutableEnabled( true );

        if ( isLoginShell )
        {
            addShellArg( "-l" );
        }
    }

    public List getShellArgsList()
    {
        List shellArgs = new ArrayList();
        List existingShellArgs = super.getShellArgsList();

        if ( ( existingShellArgs != null ) && !existingShellArgs.isEmpty() )
        {
            shellArgs.addAll( existingShellArgs );
        }

        shellArgs.add( "-c" );

        return shellArgs;
    }

    public String[] getShellArgs()
    {
        String[] shellArgs = super.getShellArgs();
        if ( shellArgs == null )
        {
           shellArgs = new String[0];
        }

        if ( ( shellArgs.length > 0 ) && !shellArgs[shellArgs.length-1].equals( "-c" ) )
        {
            String[] newArgs = new String[shellArgs.length + 1];

            System.arraycopy( shellArgs, 0, newArgs, 0, shellArgs.length );
            newArgs[shellArgs.length] = "-c";

            shellArgs = newArgs;
        }

        return shellArgs;
    }

    protected String getExecutionPreamble()
    {
        if ( getWorkingDirectoryAsString() == null )
        {
            return null;
        }

        StringBuffer sb = new StringBuffer();

        sb.append( "cd " );
        sb.append( StringUtils.quoteAndEscape( getWorkingDirectoryAsString(), '\"' ) );
        sb.append( " && " );

        return sb.toString();
    }

    protected char[] getQuotingTriggerChars()
    {
        return BASH_QUOTING_TRIGGER_CHARS;
    }

}