1 /*
2 * #%L
3 * JavaHg
4 * %%
5 * Copyright (C) 2011 aragost Trifork ag
6 * %%
7 * Permission is hereby granted, free of charge, to any person obtaining a copy
8 * of this software and associated documentation files (the "Software"), to deal
9 * in the Software without restriction, including without limitation the rights
10 * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
11 * copies of the Software, and to permit persons to whom the Software is
12 * furnished to do so, subject to the following conditions:
13 *
14 * The above copyright notice and this permission notice shall be included in
15 * all copies or substantial portions of the Software.
16 *
17 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
18 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
19 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
20 * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
21 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
22 * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
23 * THE SOFTWARE.
24 * #L%
25 */
26 package com.aragost.javahg.commands;
27
28 import com.aragost.javahg.internals.AbstractCommand;
29 import com.google.common.base.Strings;
30
31 /**
32 * Generic exception thrown when executing a Mercurial command fails.
33 */
34 public class ExecutionException extends RuntimeException {
35
36 private static final String ABORT_PREFIX = "abort: ";
37
38 private static final long serialVersionUID = 1L;
39
40 // TODO Exceptions are Serializable, AbstractCommand not. So we
41 // should not have it as a non-transient field.
42 private final AbstractCommand command;
43
44 /**
45 * @param message
46 * the exception message
47 * @param command
48 * the command that failed.
49 */
50 public ExecutionException(AbstractCommand command, String message) {
51 super(message);
52 this.command = command;
53 }
54
55 /**
56 * @param command
57 * the command that failed.
58 */
59 public ExecutionException(AbstractCommand command) {
60 this(command, generateMessage(command));
61 }
62
63 /**
64 * @return the command that failed.
65 */
66 public AbstractCommand getCommand() {
67 return command;
68 }
69
70 /**
71 * Generate generic exception message based on the command.
72 *
73 * @param cmd
74 * @return
75 */
76 private static String generateMessage(AbstractCommand cmd) {
77 String s = cmd.getErrorString().trim();
78 if (Strings.isNullOrEmpty(s)) {
79 s = "Error in command '" + cmd.getCommandName() + "' [rc: " + cmd.getReturnCode() + "]";
80 }
81 if (s.startsWith(ABORT_PREFIX)) {
82 s = s.substring(ABORT_PREFIX.length());
83 }
84 return s;
85 }
86
87 }