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 java.io.IOException;
29 import java.util.List;
30
31 import com.aragost.javahg.Changeset;
32 import com.aragost.javahg.Repository;
33 import com.aragost.javahg.commands.flags.PullCommandFlags;
34 import com.aragost.javahg.internals.PullPushHelper;
35
36 /**
37 * Command class for executing <tt>hg pull</tt>. Set flags from
38 * {@link PullCommandFlags} and call the {@link #execute} method.
39 */
40 public class PullCommand extends PullCommandFlags {
41
42 /**
43 * @param repository
44 * the repository associated with this command.
45 */
46 public PullCommand(Repository repository) {
47 super(repository);
48 withDebugFlag();
49 cmdAppend("-y");
50 }
51
52 @Override
53 public boolean isSuccessful() {
54 return super.isSuccessful() || getReturnCode() == 1;
55 }
56
57 private List<Changeset> run(String source) throws IOException {
58 if (source != null) {
59 cmdAppend(source);
60 }
61 // TODO: handle pushing multiple heads
62 return PullPushHelper.parseStream(this, launchStream());
63 }
64
65 /**
66 * Run <tt>hg pull</tt> using the default path.
67 *
68 * @return list of pulled changesets.
69 * @throws IOException
70 */
71 public List<Changeset> execute() throws IOException {
72 return run(null);
73 }
74
75 /**
76 * Run <tt>hg pull source</tt> with an explicit source path.
77 *
78 * @param source
79 * the source path. Cannot be null.
80 *
81 * @return list of pulled changesets.
82 * @throws IOException
83 */
84 public List<Changeset> execute(String source) throws IOException {
85 if (source == null) {
86 throw new NullPointerException("source cannot be null");
87 }
88 return run(source);
89 }
90
91 }