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
30 import com.aragost.javahg.Repository;
31 import com.aragost.javahg.commands.flags.BranchCommandFlags;
32 import com.aragost.javahg.internals.HgInputStream;
33
34 /**
35 * Command class for executing <tt>hg branch</tt>. Set flags from
36 * {@link BranchCommandFlags} and run {@link #set(String)} to set a
37 * branch or {@link #clean()} to reset the branch name.
38 */
39 public class BranchCommand extends BranchCommandFlags {
40
41 private static final byte[] CLEAN_PREFIX = "reset working directory to branch ".getBytes();
42
43 public BranchCommand(Repository repository) {
44 super(repository);
45 }
46
47 /**
48 * Get the branch for working directory.
49 *
50 * @return name of branch for working copy
51 */
52 public String get() {
53 return launchString().trim();
54 }
55
56 /**
57 * Set the branch for working directory.
58 *
59 * @param branchName
60 */
61 public void set(String branchName) {
62 // Trim branchName. Mercurial commandserver seems to be bit
63 // confused otherwise.
64 launchString(branchName.trim());
65 }
66
67 /**
68 * Reset the branch name for working directory to branch name of
69 * first parent
70 *
71 * @return old branch name
72 * @throws IOException
73 */
74 public String clean() throws IOException {
75 HgInputStream stream = launchStream("--clean");
76 stream.mustMatch(CLEAN_PREFIX);
77 String oldName = stream.textUpTo('\n');
78 stream.consumeAll();
79 return oldName;
80 }
81
82 }