Mercurial > jhg
annotate src/org/tmatesoft/hg/repo/HgChangelog.java @ 153:ab7ea2ac21cb
Format code
| author | Artem Tikhomirov <tikhomirov.artem@gmail.com> |
|---|---|
| date | Thu, 24 Feb 2011 21:38:46 +0100 |
| parents | 8c9f729f4dfa |
| children | ba2bf656f00f |
| rev | line source |
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1 /* |
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2 * Copyright (c) 2010-2011 TMate Software Ltd |
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3 * |
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4 * This program is free software; you can redistribute it and/or modify |
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5 * it under the terms of the GNU General Public License as published by |
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6 * the Free Software Foundation; version 2 of the License. |
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7 * |
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8 * This program is distributed in the hope that it will be useful, |
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9 * but WITHOUT ANY WARRANTY; without even the implied warranty of |
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10 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
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11 * GNU General Public License for more details. |
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12 * |
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13 * For information on how to redistribute this software under |
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14 * the terms of a license other than GNU General Public License |
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102
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15 * contact TMate Software at support@hg4j.com |
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16 */ |
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17 package org.tmatesoft.hg.repo; |
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18 |
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19 import java.io.UnsupportedEncodingException; |
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20 import java.util.ArrayList; |
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21 import java.util.Arrays; |
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22 import java.util.Calendar; |
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23 import java.util.Collections; |
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24 import java.util.Date; |
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25 import java.util.Formatter; |
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26 import java.util.HashMap; |
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27 import java.util.List; |
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28 import java.util.Locale; |
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29 import java.util.Map; |
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30 import java.util.TimeZone; |
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31 |
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32 import org.tmatesoft.hg.core.Nodeid; |
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33 import org.tmatesoft.hg.internal.RevlogStream; |
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34 |
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35 /** |
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36 * Representation of the Mercurial changelog file (list of ChangeSets) |
| 153 | 37 * |
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38 * @author Artem Tikhomirov |
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39 * @author TMate Software Ltd. |
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40 */ |
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41 public class HgChangelog extends Revlog { |
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42 |
| 153 | 43 /* package-local */HgChangelog(HgRepository hgRepo, RevlogStream content) { |
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44 super(hgRepo, content); |
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45 } |
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46 |
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47 public void all(final HgChangelog.Inspector inspector) { |
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48 range(0, getLastRevision(), inspector); |
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49 } |
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50 |
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51 public void range(int start, int end, final HgChangelog.Inspector inspector) { |
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52 RevlogStream.Inspector i = new RevlogStream.Inspector() { |
| 153 | 53 |
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54 public void next(int revisionNumber, int actualLen, int baseRevision, int linkRevision, int parent1Revision, int parent2Revision, byte[] nodeid, byte[] data) { |
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55 Changeset cset = Changeset.parse(data, 0, data.length); |
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56 // XXX there's no guarantee for Changeset.Callback that distinct instance comes each time, consider instance reuse |
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57 inspector.next(revisionNumber, Nodeid.fromBinary(nodeid, 0), cset); |
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58 } |
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59 }; |
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60 content.iterate(start, end, true, i); |
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61 } |
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62 |
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63 public List<Changeset> range(int start, int end) { |
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64 final ArrayList<Changeset> rv = new ArrayList<Changeset>(end - start + 1); |
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65 RevlogStream.Inspector i = new RevlogStream.Inspector() { |
| 153 | 66 |
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67 public void next(int revisionNumber, int actualLen, int baseRevision, int linkRevision, int parent1Revision, int parent2Revision, byte[] nodeid, byte[] data) { |
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68 Changeset cset = Changeset.parse(data, 0, data.length); |
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69 rv.add(cset); |
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70 } |
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71 }; |
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72 content.iterate(start, end, true, i); |
| 153 | 73 return rv; |
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74 } |
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75 |
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76 public void range(final HgChangelog.Inspector inspector, final int... revisions) { |
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77 if (revisions == null || revisions.length == 0) { |
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78 return; |
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79 } |
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80 RevlogStream.Inspector i = new RevlogStream.Inspector() { |
| 153 | 81 |
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82 public void next(int revisionNumber, int actualLen, int baseRevision, int linkRevision, int parent1Revision, int parent2Revision, byte[] nodeid, byte[] data) { |
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83 if (Arrays.binarySearch(revisions, revisionNumber) >= 0) { |
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84 Changeset cset = Changeset.parse(data, 0, data.length); |
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85 inspector.next(revisionNumber, Nodeid.fromBinary(nodeid, 0), cset); |
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86 } |
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87 } |
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88 }; |
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89 Arrays.sort(revisions); |
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90 content.iterate(revisions[0], revisions[revisions.length - 1], true, i); |
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91 } |
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92 |
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93 public interface Inspector { |
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94 // TODO describe whether cset is new instance each time |
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95 void next(int revisionNumber, Nodeid nodeid, Changeset cset); |
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96 } |
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97 |
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98 /** |
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99 * Entry in the Changelog |
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100 */ |
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101 public static class Changeset implements Cloneable /* for those that would like to keep a copy */{ |
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102 // TODO immutable |
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103 private/* final */Nodeid manifest; |
| 153 | 104 private String user; |
| 105 private String comment; | |
| 106 private List<String> files; // unmodifiable collection (otherwise #files() and implicit #clone() shall be revised) | |
| 107 private Date time; | |
| 108 private int timezone; | |
| 109 private Map<String, String> extras; | |
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110 |
| 153 | 111 /** |
| 112 * @see mercurial/changelog.py:read() | |
| 113 * | |
| 114 * <pre> | |
| 115 * format used: | |
| 116 * nodeid\n : manifest node in ascii | |
| 117 * user\n : user, no \n or \r allowed | |
| 118 * time tz extra\n : date (time is int or float, timezone is int) | |
| 119 * : extra is metadatas, encoded and separated by '\0' | |
| 120 * : older versions ignore it | |
| 121 * files\n\n : files modified by the cset, no \n or \r allowed | |
| 122 * (.*) : comment (free text, ideally utf-8) | |
| 123 * | |
| 124 * changelog v0 doesn't use extra | |
| 125 * </pre> | |
| 126 */ | |
| 127 private Changeset() { | |
| 128 } | |
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129 |
| 153 | 130 public Nodeid manifest() { |
| 131 return manifest; | |
| 132 } | |
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133 |
| 153 | 134 public String user() { |
| 135 return user; | |
| 136 } | |
| 137 | |
| 138 public String comment() { | |
| 139 return comment; | |
| 140 } | |
| 141 | |
| 142 public List<String> files() { | |
| 143 return files; | |
| 144 } | |
| 145 | |
| 146 public Date date() { | |
| 147 return time; | |
| 148 } | |
| 149 | |
| 150 public String dateString() { | |
| 151 // XXX keep once formatted? Perhaps, there's faster way to set up calendar/time zone? | |
| 152 StringBuilder sb = new StringBuilder(30); | |
| 153 Formatter f = new Formatter(sb, Locale.US); | |
| 154 TimeZone tz = TimeZone.getTimeZone("GMT"); | |
| 155 // apparently timezone field records number of seconds time differs from UTC, | |
| 156 // i.e. value to substract from time to get UTC time. Calendar seems to add | |
| 157 // timezone offset to UTC, instead, hence sign change. | |
| 158 tz.setRawOffset(timezone * -1000); | |
| 159 Calendar c = Calendar.getInstance(tz, Locale.US); | |
| 160 c.setTime(time); | |
| 161 f.format("%ta %<tb %<td %<tH:%<tM:%<tS %<tY %<tz", c); | |
| 162 return sb.toString(); | |
| 163 } | |
| 164 | |
| 165 public Map<String, String> extras() { | |
| 166 return extras; | |
| 167 } | |
| 168 | |
| 169 public String branch() { | |
| 170 return extras.get("branch"); | |
| 171 } | |
| 172 | |
| 173 @Override | |
| 174 public String toString() { | |
| 175 StringBuilder sb = new StringBuilder(); | |
| 176 sb.append("Changeset {"); | |
| 177 sb.append("User: ").append(user).append(", "); | |
| 178 sb.append("Comment: ").append(comment).append(", "); | |
| 179 sb.append("Manifest: ").append(manifest).append(", "); | |
| 180 sb.append("Date: ").append(time).append(", "); | |
| 181 sb.append("Files: ").append(files.size()); | |
| 182 for (String s : files) { | |
| 183 sb.append(", ").append(s); | |
| 184 } | |
| 185 if (extras != null) { | |
| 186 sb.append(", Extra: ").append(extras); | |
| 187 } | |
| 188 sb.append("}"); | |
| 189 return sb.toString(); | |
| 190 } | |
| 191 | |
| 192 @Override | |
| 193 public Changeset clone() { | |
| 194 try { | |
| 195 return (Changeset) super.clone(); | |
| 196 } catch (CloneNotSupportedException ex) { | |
| 197 throw new InternalError(ex.toString()); | |
| 198 } | |
| 199 } | |
| 200 | |
| 201 public static Changeset parse(byte[] data, int offset, int length) { | |
| 202 Changeset rv = new Changeset(); | |
| 203 rv.init(data, offset, length); | |
| 204 return rv; | |
| 205 } | |
| 206 | |
| 207 /* package-local */void init(byte[] data, int offset, int length) { | |
| 208 final int bufferEndIndex = offset + length; | |
| 209 final byte lineBreak = (byte) '\n'; | |
| 210 int breakIndex1 = indexOf(data, lineBreak, offset, bufferEndIndex); | |
| 211 if (breakIndex1 == -1) { | |
| 212 throw new IllegalArgumentException("Bad Changeset data"); | |
| 213 } | |
| 214 Nodeid _nodeid = Nodeid.fromAscii(data, 0, breakIndex1); | |
| 215 int breakIndex2 = indexOf(data, lineBreak, breakIndex1 + 1, bufferEndIndex); | |
| 216 if (breakIndex2 == -1) { | |
| 217 throw new IllegalArgumentException("Bad Changeset data"); | |
| 218 } | |
| 219 String _user = new String(data, breakIndex1 + 1, breakIndex2 - breakIndex1 - 1); | |
| 220 int breakIndex3 = indexOf(data, lineBreak, breakIndex2 + 1, bufferEndIndex); | |
| 221 if (breakIndex3 == -1) { | |
| 222 throw new IllegalArgumentException("Bad Changeset data"); | |
| 223 } | |
| 224 String _timeString = new String(data, breakIndex2 + 1, breakIndex3 - breakIndex2 - 1); | |
| 225 int space1 = _timeString.indexOf(' '); | |
| 226 if (space1 == -1) { | |
| 227 throw new IllegalArgumentException("Bad Changeset data"); | |
| 228 } | |
| 229 int space2 = _timeString.indexOf(' ', space1 + 1); | |
| 230 if (space2 == -1) { | |
| 231 space2 = _timeString.length(); | |
| 232 } | |
| 233 long unixTime = Long.parseLong(_timeString.substring(0, space1)); // XXX Float, perhaps | |
| 234 int _timezone = Integer.parseInt(_timeString.substring(space1 + 1, space2)); | |
| 235 // XXX not sure need to add timezone here - I can't figure out whether Hg keeps GMT time, and records timezone just for info, or unixTime is taken local | |
| 236 // on commit and timezone is recorded to adjust it to UTC. | |
| 237 Date _time = new Date(unixTime * 1000); | |
| 238 String _extras = space2 < _timeString.length() ? _timeString.substring(space2 + 1) : null; | |
| 239 Map<String, String> _extrasMap; | |
| 240 if (_extras == null) { | |
| 241 _extrasMap = Collections.singletonMap("branch", "default"); | |
| 242 } else { | |
| 243 _extrasMap = new HashMap<String, String>(); | |
| 244 for (String pair : _extras.split("\00")) { | |
| 245 int eq = pair.indexOf(':'); | |
| 246 // FIXME need to decode key/value, @see changelog.py:decodeextra | |
| 247 _extrasMap.put(pair.substring(0, eq), pair.substring(eq + 1)); | |
| 248 } | |
| 249 if (!_extrasMap.containsKey("branch")) { | |
| 250 _extrasMap.put("branch", "default"); | |
| 251 } | |
| 252 _extrasMap = Collections.unmodifiableMap(_extrasMap); | |
| 253 } | |
| 254 | |
| 255 // | |
| 256 int lastStart = breakIndex3 + 1; | |
| 257 int breakIndex4 = indexOf(data, lineBreak, lastStart, bufferEndIndex); | |
| 258 ArrayList<String> _files = null; | |
| 259 if (breakIndex4 > lastStart) { | |
| 260 // if breakIndex4 == lastStart, we already found \n\n and hence there are no files (e.g. merge revision) | |
| 261 _files = new ArrayList<String>(5); | |
| 262 while (breakIndex4 != -1 && breakIndex4 + 1 < bufferEndIndex) { | |
| 263 _files.add(new String(data, lastStart, breakIndex4 - lastStart)); | |
| 264 lastStart = breakIndex4 + 1; | |
| 265 if (data[breakIndex4 + 1] == lineBreak) { | |
| 266 // found \n\n | |
| 267 break; | |
| 268 } else { | |
| 269 breakIndex4 = indexOf(data, lineBreak, lastStart, bufferEndIndex); | |
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270 } |
| 153 | 271 } |
| 272 if (breakIndex4 == -1 || breakIndex4 >= bufferEndIndex) { | |
| 273 throw new IllegalArgumentException("Bad Changeset data"); | |
| 274 } | |
| 275 } else { | |
| 276 breakIndex4--; | |
| 277 } | |
| 278 String _comment; | |
| 279 try { | |
| 280 _comment = new String(data, breakIndex4 + 2, bufferEndIndex - breakIndex4 - 2, "UTF-8"); | |
| 281 // FIXME respect ui.fallbackencoding and try to decode if set | |
| 282 } catch (UnsupportedEncodingException ex) { | |
| 283 _comment = ""; | |
| 284 throw new IllegalStateException("Could hardly happen"); | |
| 285 } | |
| 286 // change this instance at once, don't leave it partially changes in case of error | |
| 287 this.manifest = _nodeid; | |
| 288 this.user = _user; | |
| 289 this.time = _time; | |
| 290 this.timezone = _timezone; | |
| 291 this.files = _files == null ? Collections.<String> emptyList() : Collections.unmodifiableList(_files); | |
| 292 this.comment = _comment; | |
| 293 this.extras = _extrasMap; | |
| 294 } | |
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295 |
| 153 | 296 private static int indexOf(byte[] src, byte what, int startOffset, int endIndex) { |
| 297 for (int i = startOffset; i < endIndex; i++) { | |
| 298 if (src[i] == what) { | |
| 299 return i; | |
| 300 } | |
| 301 } | |
| 302 return -1; | |
| 303 } | |
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304 } |
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305 |
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306 } |