1 package org.codehaus.plexus.util.cli.shell;
2
3 /*
4 * Copyright The Codehaus Foundation.
5 *
6 * Licensed under the Apache License, Version 2.0 (the "License");
7 * you may not use this file except in compliance with the License.
8 * You may obtain a copy of the License at
9 *
10 * http://www.apache.org/licenses/LICENSE-2.0
11 *
12 * Unless required by applicable law or agreed to in writing, software
13 * distributed under the License is distributed on an "AS IS" BASIS,
14 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
15 * See the License for the specific language governing permissions and
16 * limitations under the License.
17 */
18
19 import java.util.Arrays;
20 import java.util.List;
21
22 /**
23 * <p>
24 * Implementation to call the CMD Shell present on Windows NT, 2000 and XP
25 * </p>
26 *
27 * @author <a href="mailto:carlos@apache.org">Carlos Sanchez</a>
28 * @since 1.2
29 *
30 */
31 public class CmdShell extends Shell {
32 public CmdShell() {
33 setShellCommand("cmd.exe");
34 setQuotedExecutableEnabled(true);
35 setShellArgs(new String[] {"/X", "/C"});
36 }
37
38 /**
39 * <p>
40 * Specific implementation that quotes all the command line.
41 * </p>
42 * <p>
43 * Workaround for http://bugs.sun.com/bugdatabase/view_bug.do?bug_id=6468220
44 * </p>
45 * <p>
46 * From cmd.exe /? output:
47 * </p>
48 *
49 * <pre>
50 * If /C or /K is specified, then the remainder of the command line after
51 * the switch is processed as a command line, where the following logic is
52 * used to process quote (") characters:
53 *
54 * 1. If all of the following conditions are met, then quote characters
55 * on the command line are preserved:
56 *
57 * - no /S switch
58 * - exactly two quote characters
59 * - no special characters between the two quote characters,
60 * where special is one of: &<>()@ˆ|
61 * - there are one or more whitespace characters between the
62 * the two quote characters
63 * - the string between the two quote characters is the name
64 * of an executable file.
65 *
66 * 2. Otherwise, old behavior is to see if the first character is
67 * a quote character and if so, strip the leading character and
68 * remove the last quote character on the command line, preserving
69 * any text after the last quote character.
70 * </pre>
71 * <p>
72 * Always quoting the entire command line, regardless of these conditions appears to make Windows processes invoke
73 * successfully.
74 * </p>
75 */
76 @Override
77 public List<String> getCommandLine(String executable, String[] arguments) {
78 StringBuilder sb = new StringBuilder();
79 sb.append("\"");
80 sb.append(super.getCommandLine(executable, arguments).get(0));
81 sb.append("\"");
82
83 return Arrays.asList(new String[] {sb.toString()});
84 }
85 }