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.io.InputStream; 30 31 import com.aragost.javahg.Changeset; 32 import com.aragost.javahg.Repository; 33 import com.aragost.javahg.commands.flags.UpdateCommandFlags; 34 import com.aragost.javahg.internals.UpdateMergeHelper; 35 36 /** 37 * Command class for executing <tt>hg update</tt>. Set flags from 38 * {@link UpdateCommandFlags} and call the {@link #execute} method. 39 */ 40 public class UpdateCommand extends UpdateCommandFlags { 41 42 /** 43 * @param repository 44 * the repository associated with this command. 45 */ 46 public UpdateCommand(Repository repository) { 47 super(repository); 48 } 49 50 /** 51 * Run <tt>hg update</tt> on a clean working copy. This runs with 52 * no merge oracle and so the caller must ensure that there are no 53 * merge conflicts. 54 * 55 * @return the update result. 56 * @throws IOException 57 */ 58 public UpdateResult execute() throws IOException { 59 return executeHelper(null); 60 } 61 62 /** 63 * Run <tt>hg update</tt> with a merge oracle. 64 * 65 * @param oracle 66 * the merge oracle to use in case of merge conflicts. 67 * 68 * @return the update result. 69 * @throws IOException 70 */ 71 public UpdateResult execute(ManifestMergeOracle oracle) throws IOException { 72 if (oracle == null) { 73 throw new IllegalArgumentException("oracle == null"); 74 } 75 return executeHelper(oracle); 76 } 77 78 private UpdateResult executeHelper(ManifestMergeOracle oracle) throws IOException { 79 InputStream stdout = launchStream(); 80 UpdateMergeHelper helper = new UpdateMergeHelper(stdout, oracle, this); 81 return helper.update(); 82 } 83 84 @Override 85 public boolean isSuccessful() { 86 return super.isSuccessful() || getReturnCode() == 1; 87 } 88 89 /** 90 * @return True if the command was not successful because it would have 91 * crossed branches. Applicable to updates where revision is not 92 * specified. 93 */ 94 public boolean crossedBranch() { 95 String errorString = getErrorString(); 96 97 return errorString.indexOf("abort: crosses branches") >= 0; 98 } 99 100 /** 101 * Set the <tt>--rev</tt> flag. 102 * 103 * @param cset 104 * the changeset to update to 105 * @return this command. 106 */ 107 public UpdateCommand rev(Changeset cset) { 108 super.rev(cset.getNode()); 109 return this; 110 } 111 }