1 package org.apache.maven.shared.utils.cli.shell;
2
3 /*
4 * Licensed to the Apache Software Foundation (ASF) under one
5 * or more contributor license agreements. See the NOTICE file
6 * distributed with this work for additional information
7 * regarding copyright ownership. The ASF licenses this file
8 * to you under the Apache License, Version 2.0 (the
9 * "License"); you may not use this file except in compliance
10 * with the License. You may obtain a copy of the License at
11 *
12 * http://www.apache.org/licenses/LICENSE-2.0
13 *
14 * Unless required by applicable law or agreed to in writing,
15 * software distributed under the License is distributed on an
16 * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
17 * KIND, either express or implied. See the License for the
18 * specific language governing permissions and limitations
19 * under the License.
20 */
21
22 import java.util.Arrays;
23 import java.util.List;
24
25 /**
26 * <p>
27 * Implementation to call the CMD Shell present on Windows NT, 2000 and XP
28 * </p>
29 *
30 * @author <a href="mailto:carlos@apache.org">Carlos Sanchez</a>
31 *
32 */
33 public class CmdShell
34 extends Shell
35 {
36 /**
37 * Create an instance of CmdShell.
38 */
39 public CmdShell()
40 {
41 setShellCommand( "cmd.exe" );
42 setQuotedExecutableEnabled( true );
43 setShellArgs( new String[]{ "/X", "/C" } );
44 }
45
46 /**
47 * <p>
48 * Specific implementation that quotes all the command line.
49 * </p>
50 * <p>
51 * Workaround for http://bugs.sun.com/bugdatabase/view_bug.do?bug_id=6468220
52 * </p>
53 * <p>
54 * From cmd.exe /? output:
55 * </p>
56 * <p/>
57 * <pre>
58 * If /C or /K is specified, then the remainder of the command line after
59 * the switch is processed as a command line, where the following logic is
60 * used to process quote (") characters:
61 *
62 * 1. If all of the following conditions are met, then quote characters
63 * on the command line are preserved:
64 *
65 * - no /S switch
66 * - exactly two quote characters
67 * - no special characters between the two quote characters,
68 * where special is one of: &<>()@ˆ|
69 * - there are one or more whitespace characters between the
70 * the two quote characters
71 * - the string between the two quote characters is the name
72 * of an executable file.
73 *
74 * 2. Otherwise, old behavior is to see if the first character is
75 * a quote character and if so, strip the leading character and
76 * remove the last quote character on the command line, preserving
77 * any text after the last quote character.
78 * </pre>
79 * <p/>
80 * <p>
81 * Always quoting the entire command line, regardless of these conditions
82 * appears to make Windows processes invoke successfully.
83 * </p>
84 *
85 * @param executable The executable.
86 * @param arguments The arguments for the executable.
87 * @return The resulting command line.
88 */
89 public List<String> getCommandLine( String executable, String... arguments )
90 {
91 StringBuilder sb = new StringBuilder();
92 sb.append( '"' );
93 sb.append( super.getCommandLine( executable, arguments ).get( 0 ) );
94 sb.append( '"' );
95
96 return Arrays.asList( sb.toString() );
97 }
98
99 }