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

/*
 * Copyright 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 java.util.Arrays;
import java.util.List;

/**
 * 

* Implementation to call the CMD Shell present on Windows NT, 2000 and XP *

* * @author Carlos Sanchez * @since 1.2 * */ public class CmdShell extends Shell { public CmdShell() { setShellCommand( "cmd.exe" ); setQuotedExecutableEnabled( true ); setShellArgs( new String[] { "/X", "/C" } ); } /** *

* Specific implementation that quotes all the command line. *

*

* Workaround for http://bugs.sun.com/bugdatabase/view_bug.do?bug_id=6468220 *

*

* From cmd.exe /? output: *

* *
     *      If /C or /K is specified, then the remainder of the command line after
     *      the switch is processed as a command line, where the following logic is
     *      used to process quote (") characters:
     *
     *      1.  If all of the following conditions are met, then quote characters
     *      on the command line are preserved:
     *
     *      - no /S switch
     *      - exactly two quote characters
     *      - no special characters between the two quote characters,
     *      where special is one of: &<>()@ˆ|
     *      - there are one or more whitespace characters between the
     *      the two quote characters
     *      - the string between the two quote characters is the name
     *      of an executable file.
     *
     *      2.  Otherwise, old behavior is to see if the first character is
     *      a quote character and if so, strip the leading character and
     *      remove the last quote character on the command line, preserving
     *      any text after the last quote character.
     * 
*

* Always quoting the entire command line, regardless of these conditions appears to make Windows processes invoke * successfully. *

*/ @Override public List getCommandLine( String executable, String[] arguments ) { StringBuilder sb = new StringBuilder(); sb.append( "\"" ); sb.append( super.getCommandLine( executable, arguments ).get( 0 ) ); sb.append( "\"" ); return Arrays.asList( new String[] { sb.toString() } ); } }




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