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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.util.regex.Matcher;
29  import java.util.regex.Pattern;
30  
31  import com.aragost.javahg.internals.UnexpectedCommandOutputException;
32  
33  /**
34   * The statistic returned by running <tt>hg update</tt>.
35   */
36  public class UpdateResult {
37  
38      private static final Pattern UPDATE_LINE_PATTERN = Pattern.compile("^(.*) files updated, (.*) files merged, (.*) files removed, (.*) files unresolved$");
39  
40      private int updated;
41  
42      private int merged;
43  
44      private int removed;
45  
46      private int unresolved;
47  
48      private UpdateResult() {
49      }
50  
51      /**
52       * @return number of updated files.
53       */
54      public int getUpdated() {
55          return updated;
56      }
57  
58      /**
59       * @return number of merged files. These are the files that were
60       *         merged without conflict, see {@link #getUnresolved()}
61       *         for the number of files with merge conflicts.
62       */
63      public int getMerged() {
64          return merged;
65      }
66  
67      /**
68       * @return number of removed files.
69       */
70      public int getRemoved() {
71          return removed;
72      }
73  
74      /**
75       * @return number of unresolved files.
76       */
77      public int getUnresolved() {
78          return unresolved;
79      }
80  
81      /**
82       * Factory method to create an {@link UpdateResult}.
83       * 
84       * @param line
85       *            the final line of <tt>hg update</tt>
86       * @return the parsed update result.
87       */
88      public static UpdateResult fromLine(String line) {
89          // format of line: 0 files updated, 0 files merged, 0 files
90          // removed, 0 files unresolved
91          UpdateResult result = new UpdateResult();
92          Matcher matcher = UPDATE_LINE_PATTERN.matcher(line);
93          if (!matcher.matches()) {
94              throw new UnexpectedCommandOutputException("Unexpected format: " + line);
95          }
96          int[] numbers = new int[4];
97          for (int i = 0; i < 4; i++) {
98              numbers[i] = Integer.parseInt(line.substring(matcher.start(i + 1), matcher.end(i + 1)));
99          }
100         result.updated = numbers[0];
101         result.merged = numbers[1];
102         result.removed = numbers[2];
103         result.unresolved = numbers[3];
104         return result;
105     }
106 
107     @Override
108     public String toString() {
109         return "updated " + getUpdated() + ", merged " + getMerged() + ", removed " + getRemoved() + ", unresolved "
110                 + getUnresolved();
111     }
112 }