Mercurial > hg4j
annotate src/org/tmatesoft/hg/repo/HgChangelog.java @ 670:52af7f62e731
AIOOBE in BundleGenerator.ChunkGenerator.iterate when there are no outgoing changes on push
| author | Artem Tikhomirov <tikhomirov.artem@gmail.com> |
|---|---|
| date | Fri, 12 Jul 2013 15:27:43 +0200 |
| parents | fba85bc1dfb8 |
| children | 545b1d4cc11d |
| rev | line source |
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1 /* |
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2 * Copyright (c) 2010-2013 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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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.IOException; |
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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.core.SessionContext; |
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34 import org.tmatesoft.hg.internal.Callback; |
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35 import org.tmatesoft.hg.internal.DataAccess; |
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36 import org.tmatesoft.hg.internal.EncodingHelper; |
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37 import org.tmatesoft.hg.internal.Internals; |
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38 import org.tmatesoft.hg.internal.Lifecycle; |
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39 import org.tmatesoft.hg.internal.LifecycleBridge; |
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40 import org.tmatesoft.hg.internal.Pool; |
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41 import org.tmatesoft.hg.internal.RevlogStream; |
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42 import org.tmatesoft.hg.util.Adaptable; |
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43 import org.tmatesoft.hg.util.CancelSupport; |
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44 import org.tmatesoft.hg.util.ProgressSupport; |
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45 |
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46 /** |
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47 * Representation of the Mercurial changelog file (list of ChangeSets) |
| 153 | 48 * |
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49 * @author Artem Tikhomirov |
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50 * @author TMate Software Ltd. |
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51 */ |
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52 public final class HgChangelog extends Revlog { |
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53 |
| 153 | 54 /* package-local */HgChangelog(HgRepository hgRepo, RevlogStream content) { |
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55 super(hgRepo, content, true); |
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56 } |
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57 |
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58 /** |
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59 * Iterate over whole changelog |
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60 * @param inspector callback to process entries |
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61 * @throws HgInvalidControlFileException if failed to access revlog index/data entry. <em>Runtime exception</em> |
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62 * @throws HgRuntimeException subclass thereof to indicate other issues with the library. <em>Runtime exception</em> |
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63 */ |
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64 public void all(final HgChangelog.Inspector inspector) throws HgRuntimeException { |
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65 range(0, getLastRevision(), inspector); |
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66 } |
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67 |
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68 /** |
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69 * Iterate over changelog part |
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70 * @param start first changelog entry to process |
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71 * @param end last changelog entry to process |
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72 * @param inspector callback to process entries |
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73 * @throws HgInvalidRevisionException if any supplied revision doesn't identify revision from this revlog. <em>Runtime exception</em> |
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74 * @throws HgInvalidControlFileException if failed to access revlog index/data entry. <em>Runtime exception</em> |
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75 * @throws HgRuntimeException subclass thereof to indicate other issues with the library. <em>Runtime exception</em> |
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76 */ |
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77 public void range(int start, int end, final HgChangelog.Inspector inspector) throws HgRuntimeException { |
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78 if (inspector == null) { |
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79 throw new IllegalArgumentException(); |
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80 } |
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81 content.iterate(start, end, true, new RawCsetParser(getRepo(), inspector)); |
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82 } |
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83 |
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84 /** |
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85 * @see #range(int, int, Inspector) |
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86 * @return changeset entry objects, never <code>null</code> |
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87 * @throws HgInvalidRevisionException if any supplied revision doesn't identify revision from this revlog. <em>Runtime exception</em> |
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88 * @throws HgInvalidControlFileException if failed to access revlog index/data entry. <em>Runtime exception</em> |
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89 * @throws HgRuntimeException subclass thereof to indicate other issues with the library. <em>Runtime exception</em> |
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90 */ |
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91 public List<RawChangeset> range(int start, int end) throws HgRuntimeException { |
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92 final RawCsetCollector c = new RawCsetCollector(end - start + 1); |
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93 range(start, end, c); |
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94 return c.result; |
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95 } |
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96 |
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97 /** |
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98 * Access individual revisions. Note, regardless of supplied revision order, inspector gets |
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99 * changesets strictly in the order they are in the changelog. |
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100 * @param inspector callback to get changesets |
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101 * @param revisions revisions to read, unrestricted ordering. |
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102 * @throws HgInvalidRevisionException if any supplied revision doesn't identify revision from this revlog <em>Runtime exception</em> |
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103 * @throws HgInvalidControlFileException if failed to access revlog index/data entry. <em>Runtime exception</em> |
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104 * @throws HgRuntimeException subclass thereof to indicate other issues with the library. <em>Runtime exception</em> |
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105 */ |
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106 public void range(final HgChangelog.Inspector inspector, final int... revisions) throws HgRuntimeException { |
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107 Arrays.sort(revisions); |
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108 rangeInternal(inspector, revisions); |
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109 } |
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110 |
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111 /** |
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112 * Friends-only version of {@link #range(Inspector, int...)}, when callers know array is sorted |
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113 */ |
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114 /*package-local*/ void rangeInternal(HgChangelog.Inspector inspector, int[] sortedRevisions) throws HgRuntimeException { |
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115 if (sortedRevisions == null || sortedRevisions.length == 0) { |
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116 return; |
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117 } |
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118 if (inspector == null) { |
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119 throw new IllegalArgumentException(); |
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120 } |
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121 content.iterate(sortedRevisions, true, new RawCsetParser(getRepo(), inspector)); |
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122 } |
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123 |
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124 /** |
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125 * Get changeset entry object |
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126 * @throws HgInvalidRevisionException if supplied nodeid doesn't identify any revision from this revlog. <em>Runtime exception</em> |
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127 * @throws HgInvalidControlFileException if failed to access revlog index/data entry. <em>Runtime exception</em> |
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128 * @throws HgRuntimeException subclass thereof to indicate other issues with the library. <em>Runtime exception</em> |
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129 */ |
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130 public RawChangeset changeset(Nodeid nid) throws HgRuntimeException { |
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131 int x = getRevisionIndex(nid); |
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132 return range(x, x).get(0); |
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133 } |
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134 |
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135 @Callback |
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136 public interface Inspector { |
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137 /** |
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138 * Access next changeset |
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139 * TODO describe what revisionNumber is when Inspector is used with HgBundle (BAD_REVISION or bundle's local order?) |
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140 * |
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141 * @param revisionIndex index of revision being inspected, local to the inspected object |
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142 * @param nodeid revision being inspected |
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143 * @param cset changeset raw data |
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144 */ |
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145 void next(int revisionIndex, Nodeid nodeid, RawChangeset cset) throws HgRuntimeException; |
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146 } |
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147 |
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148 /** |
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149 * Entry in the Changelog |
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150 */ |
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151 public static final class RawChangeset implements Cloneable /* for those that would like to keep a copy */{ |
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152 // would be nice to get it immutable, but then we can't reuse instances |
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153 private/* final */Nodeid manifest; |
| 153 | 154 private String user; |
| 155 private String comment; | |
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156 private String[] files; // shall not be modified (#clone() does shallow copy) |
| 153 | 157 private Date time; |
| 158 private int timezone; | |
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161
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159 // http://mercurial.selenic.com/wiki/PruningDeadBranches - Closing changesets can be identified by close=1 in the changeset's extra field. |
| 153 | 160 private Map<String, String> extras; |
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161 |
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162 private RawChangeset() { |
| 153 | 163 } |
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164 |
| 153 | 165 public Nodeid manifest() { |
| 166 return manifest; | |
| 167 } | |
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168 |
| 153 | 169 public String user() { |
| 170 return user; | |
| 171 } | |
| 172 | |
| 173 public String comment() { | |
| 174 return comment; | |
| 175 } | |
| 176 | |
| 177 public List<String> files() { | |
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178 return Arrays.asList(files); |
| 153 | 179 } |
| 180 | |
| 181 public Date date() { | |
| 182 return time; | |
| 183 } | |
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184 |
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185 /** |
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186 * @return time zone value, as is, positive for Western Hemisphere. |
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187 */ |
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188 public int timezone() { |
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189 return timezone; |
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190 } |
| 153 | 191 |
| 192 public String dateString() { | |
| 193 // XXX keep once formatted? Perhaps, there's faster way to set up calendar/time zone? | |
| 194 StringBuilder sb = new StringBuilder(30); | |
| 195 Formatter f = new Formatter(sb, Locale.US); | |
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196 TimeZone tz = TimeZone.getTimeZone(TimeZone.getAvailableIDs(timezone * 1000)[0]); |
| 153 | 197 // apparently timezone field records number of seconds time differs from UTC, |
| 198 // i.e. value to substract from time to get UTC time. Calendar seems to add | |
| 199 // timezone offset to UTC, instead, hence sign change. | |
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200 // tz.setRawOffset(timezone * -1000); |
| 153 | 201 Calendar c = Calendar.getInstance(tz, Locale.US); |
| 202 c.setTime(time); | |
| 203 f.format("%ta %<tb %<td %<tH:%<tM:%<tS %<tY %<tz", c); | |
| 204 return sb.toString(); | |
| 205 } | |
| 206 | |
| 207 public Map<String, String> extras() { | |
| 208 return extras; | |
| 209 } | |
| 210 | |
| 211 public String branch() { | |
| 212 return extras.get("branch"); | |
| 213 } | |
| 214 | |
| 215 @Override | |
| 216 public String toString() { | |
| 217 StringBuilder sb = new StringBuilder(); | |
| 218 sb.append("Changeset {"); | |
| 219 sb.append("User: ").append(user).append(", "); | |
| 220 sb.append("Comment: ").append(comment).append(", "); | |
| 221 sb.append("Manifest: ").append(manifest).append(", "); | |
| 222 sb.append("Date: ").append(time).append(", "); | |
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223 sb.append("Files: ").append(files.length); |
| 153 | 224 for (String s : files) { |
| 225 sb.append(", ").append(s); | |
| 226 } | |
| 227 if (extras != null) { | |
| 228 sb.append(", Extra: ").append(extras); | |
| 229 } | |
| 230 sb.append("}"); | |
| 231 return sb.toString(); | |
| 232 } | |
| 233 | |
| 234 @Override | |
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235 public RawChangeset clone() { |
| 153 | 236 try { |
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237 return (RawChangeset) super.clone(); |
| 153 | 238 } catch (CloneNotSupportedException ex) { |
| 239 throw new InternalError(ex.toString()); | |
| 240 } | |
| 241 } | |
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242 } |
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243 |
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244 /** |
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245 * @see mercurial/changelog.py:read() |
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246 * |
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247 * <pre> |
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248 * format used: |
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249 * nodeid\n : manifest node in ascii |
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250 * user\n : user, no \n or \r allowed |
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251 * time tz extra\n : date (time is int or float, timezone is int) |
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252 * : extra is metadatas, encoded and separated by '\0' |
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253 * : older versions ignore it |
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254 * files\n\n : files modified by the cset, no \n or \r allowed |
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255 * (.*) : comment (free text, ideally utf-8) |
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256 * |
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257 * changelog v0 doesn't use extra |
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258 * </pre> |
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259 */ |
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260 /*package-local*/static final class ChangesetParser { |
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261 private final EncodingHelper encHelper; |
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262 // it's likely user names get repeated again and again throughout repository. |
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263 private final Pool<String> usersPool; |
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264 private final Pool<String> filesPool; |
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265 private final boolean reuseChangesetInstance; |
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266 private RawChangeset target; |
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267 |
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268 public ChangesetParser(SessionContext.Source sessionContex, boolean shallReuseCsetInstance) { |
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269 encHelper = Internals.buildFileNameEncodingHelper(sessionContex); |
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270 usersPool = new Pool<String>(); |
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271 filesPool = new Pool<String>(); |
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272 reuseChangesetInstance = shallReuseCsetInstance; |
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273 if (shallReuseCsetInstance) { |
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274 target = new RawChangeset(); |
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275 } |
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276 } |
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277 |
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278 public void dispose() { |
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279 usersPool.clear(); |
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280 filesPool.clear(); |
| 153 | 281 } |
| 282 | |
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283 public RawChangeset parse(DataAccess da) throws IOException, HgInvalidDataFormatException { |
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284 byte[] data = da.byteArray(); |
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285 if (!reuseChangesetInstance) { |
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286 target = new RawChangeset(); |
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287 } |
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288 init(data, 0, data.length); |
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289 return target; |
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290 } |
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291 |
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292 private void init(byte[] data, int offset, int length) throws HgInvalidDataFormatException { |
| 153 | 293 final int bufferEndIndex = offset + length; |
| 294 final byte lineBreak = (byte) '\n'; | |
| 295 int breakIndex1 = indexOf(data, lineBreak, offset, bufferEndIndex); | |
| 296 if (breakIndex1 == -1) { | |
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297 throw new HgInvalidDataFormatException("Bad Changeset data"); |
| 153 | 298 } |
| 299 Nodeid _nodeid = Nodeid.fromAscii(data, 0, breakIndex1); | |
| 300 int breakIndex2 = indexOf(data, lineBreak, breakIndex1 + 1, bufferEndIndex); | |
| 301 if (breakIndex2 == -1) { | |
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302 throw new HgInvalidDataFormatException("Bad Changeset data"); |
| 153 | 303 } |
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589
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304 String _user; |
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305 _user = encHelper.userFromChangeset(data, breakIndex1 + 1, breakIndex2 - breakIndex1 - 1); |
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306 _user = usersPool.unify(_user); |
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307 |
| 153 | 308 int breakIndex3 = indexOf(data, lineBreak, breakIndex2 + 1, bufferEndIndex); |
| 309 if (breakIndex3 == -1) { | |
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310 throw new HgInvalidDataFormatException("Bad Changeset data"); |
| 153 | 311 } |
| 312 String _timeString = new String(data, breakIndex2 + 1, breakIndex3 - breakIndex2 - 1); | |
| 313 int space1 = _timeString.indexOf(' '); | |
| 314 if (space1 == -1) { | |
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315 throw new HgInvalidDataFormatException(String.format("Bad Changeset data: %s in [%d..%d]", "time string", breakIndex2+1, breakIndex3)); |
| 153 | 316 } |
| 317 int space2 = _timeString.indexOf(' ', space1 + 1); | |
| 318 if (space2 == -1) { | |
| 319 space2 = _timeString.length(); | |
| 320 } | |
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321 long unixTime = Long.parseLong(_timeString.substring(0, space1)); |
| 153 | 322 int _timezone = Integer.parseInt(_timeString.substring(space1 + 1, space2)); |
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323 // unixTime is local time, and timezone records difference of the local time to UTC. |
| 153 | 324 Date _time = new Date(unixTime * 1000); |
| 325 String _extras = space2 < _timeString.length() ? _timeString.substring(space2 + 1) : null; | |
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326 Map<String, String> _extrasMap = parseExtras(_extras); |
| 153 | 327 // |
| 328 int lastStart = breakIndex3 + 1; | |
| 329 int breakIndex4 = indexOf(data, lineBreak, lastStart, bufferEndIndex); | |
| 330 ArrayList<String> _files = null; | |
| 331 if (breakIndex4 > lastStart) { | |
| 332 // if breakIndex4 == lastStart, we already found \n\n and hence there are no files (e.g. merge revision) | |
| 333 _files = new ArrayList<String>(5); | |
| 334 while (breakIndex4 != -1 && breakIndex4 + 1 < bufferEndIndex) { | |
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335 String fname = encHelper.fileFromChangeset(data, lastStart, breakIndex4 - lastStart); |
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336 _files.add(filesPool.unify(fname)); |
| 153 | 337 lastStart = breakIndex4 + 1; |
| 338 if (data[breakIndex4 + 1] == lineBreak) { | |
| 339 // found \n\n | |
| 340 break; | |
| 341 } else { | |
| 342 breakIndex4 = indexOf(data, lineBreak, lastStart, bufferEndIndex); | |
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343 } |
| 153 | 344 } |
| 345 if (breakIndex4 == -1 || breakIndex4 >= bufferEndIndex) { | |
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346 throw new HgInvalidDataFormatException("Bad Changeset data"); |
| 153 | 347 } |
| 348 } else { | |
| 349 breakIndex4--; | |
| 350 } | |
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351 String _comment = encHelper.commentFromChangeset(data, breakIndex4 + 2, bufferEndIndex - breakIndex4 - 2); |
| 153 | 352 // change this instance at once, don't leave it partially changes in case of error |
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353 target.manifest = _nodeid; |
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354 target.user = _user; |
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355 target.time = _time; |
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356 target.timezone = _timezone; |
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357 target.files = _files == null ? new String[0] : _files.toArray(new String[_files.size()]); |
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358 target.comment = _comment; |
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359 target.extras = _extrasMap; |
| 153 | 360 } |
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361 |
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362 private Map<String, String> parseExtras(String _extras) { |
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363 final String extras_branch_key = "branch"; |
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364 _extras = _extras == null ? null : _extras.trim(); |
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365 if (_extras == null || _extras.length() == 0) { |
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366 return Collections.singletonMap(extras_branch_key, HgRepository.DEFAULT_BRANCH_NAME); |
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367 } |
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368 Map<String, String> _extrasMap = new HashMap<String, String>(); |
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369 int lastIndex = 0; |
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370 do { |
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371 String pair; |
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372 int sp = _extras.indexOf('\0', lastIndex); |
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373 if (sp == -1) { |
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374 sp = _extras.length(); |
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375 } |
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376 if (sp > lastIndex) { |
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377 pair = _extras.substring(lastIndex, sp); |
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378 pair = decode(pair); |
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379 int eq = pair.indexOf(':'); |
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380 _extrasMap.put(pair.substring(0, eq), pair.substring(eq + 1)); |
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381 lastIndex = sp + 1; |
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382 } |
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383 } while (lastIndex < _extras.length()); |
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384 if (!_extrasMap.containsKey(extras_branch_key)) { |
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385 _extrasMap.put(extras_branch_key, HgRepository.DEFAULT_BRANCH_NAME); |
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386 } |
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387 return Collections.unmodifiableMap(_extrasMap); |
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388 } |
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389 |
| 153 | 390 private static int indexOf(byte[] src, byte what, int startOffset, int endIndex) { |
| 391 for (int i = startOffset; i < endIndex; i++) { | |
| 392 if (src[i] == what) { | |
| 393 return i; | |
| 394 } | |
| 395 } | |
| 396 return -1; | |
| 397 } | |
|
363
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398 |
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399 private static String decode(String s) { |
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400 if (s != null && s.indexOf('\\') != -1) { |
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401 // TestAuxUtilities#testChangelogExtrasDecode |
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402 return s.replace("\\\\", "\\").replace("\\n", "\n").replace("\\r", "\r").replace("\\0", "\00"); |
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403 } |
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404 return s; |
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405 } |
|
129
645829962785
core.Cset renamed to HgChangeset; repo.Changeset moved into HgChangelog
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406 } |
|
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407 |
|
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408 private static class RawCsetCollector implements Inspector { |
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409 final ArrayList<RawChangeset> result; |
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410 |
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411 public RawCsetCollector(int count) { |
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412 result = new ArrayList<RawChangeset>(count > 0 ? count : 5); |
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413 } |
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414 |
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415 public void next(int revisionNumber, Nodeid nodeid, RawChangeset cset) { |
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416 result.add(cset.clone()); |
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417 } |
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418 } |
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419 |
|
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420 private static final class RawCsetParser implements RevlogStream.Inspector, Adaptable, Lifecycle { |
|
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421 |
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422 private final Inspector inspector; |
|
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423 private final ChangesetParser csetBuilder; |
|
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424 // non-null when inspector uses high-level lifecycle entities (progress and/or cancel supports) |
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425 private final LifecycleBridge lifecycleStub; |
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426 // non-null when inspector relies on low-level lifecycle and is responsible |
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427 // to proceed any possible high-level entities himself. |
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428 private final Lifecycle inspectorLifecycle; |
|
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429 |
|
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430 public RawCsetParser(SessionContext.Source sessionContext, HgChangelog.Inspector delegate) { |
|
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431 assert delegate != null; |
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432 inspector = delegate; |
|
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433 csetBuilder = new ChangesetParser(sessionContext, true); |
|
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434 inspectorLifecycle = Adaptable.Factory.getAdapter(delegate, Lifecycle.class, null); |
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435 if (inspectorLifecycle == null) { |
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|
436 ProgressSupport ph = Adaptable.Factory.getAdapter(delegate, ProgressSupport.class, null); |
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|
437 CancelSupport cs = Adaptable.Factory.getAdapter(delegate, CancelSupport.class, null); |
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438 if (cs != null || ph != null) { |
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|
439 lifecycleStub = new LifecycleBridge(ph, cs); |
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440 } else { |
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441 lifecycleStub = null; |
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442 } |
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443 } else { |
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|
444 lifecycleStub = null; |
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|
445 } |
|
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446 } |
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|
447 |
|
628
6526d8adbc0f
Explicit HgRuntimeException to facilitate easy switch from runtime to checked exceptions
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|
448 public void next(int revisionNumber, int actualLen, int baseRevision, int linkRevision, int parent1Revision, int parent2Revision, byte[] nodeid, DataAccess da) throws HgRuntimeException { |
|
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449 try { |
|
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450 RawChangeset cset = csetBuilder.parse(da); |
|
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451 // XXX there's no guarantee for Changeset.Callback that distinct instance comes each time, consider instance reuse |
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452 inspector.next(revisionNumber, Nodeid.fromBinary(nodeid, 0), cset); |
|
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|
453 if (lifecycleStub != null) { |
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|
454 lifecycleStub.nextStep(); |
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|
455 } |
|
427
31a89587eb04
FIXMEs: consistent names, throws for commands and their handlers. Use of checked exceptions in hi-level api
Artem Tikhomirov <tikhomirov.artem@gmail.com>
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|
456 } catch (HgInvalidDataFormatException ex) { |
|
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|
457 throw ex.setRevisionIndex(revisionNumber); |
|
366
189dc6dc1c3e
Use exceptions to expose errors reading mercurial data
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|
458 } catch (IOException ex) { |
|
423
9c9c442b5f2e
Major refactoring of exception handling. Low-level API uses RuntimeExceptions, while checked are left for higher level
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|
459 // XXX need better exception, perhaps smth like HgChangelogException (extends HgInvalidControlFileException) |
|
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Major refactoring of exception handling. Low-level API uses RuntimeExceptions, while checked are left for higher level
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460 throw new HgInvalidControlFileException("Failed reading changelog", ex, null).setRevisionIndex(revisionNumber); |
|
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461 } |
|
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462 } |
|
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|
463 |
|
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|
464 public <T> T getAdapter(Class<T> adapterClass) { |
|
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465 if (adapterClass == Lifecycle.class) { |
|
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466 return adapterClass.cast(this); |
|
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Facilitate cancellation and progress reporting in changelog and manifest iterations
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467 } |
|
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|
468 // XXX what if caller takes Progress/Cancel (which we update through lifecycleStub, too) |
|
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469 return Adaptable.Factory.getAdapter(inspector, adapterClass, null); |
|
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470 } |
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Facilitate cancellation and progress reporting in changelog and manifest iterations
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|
471 |
|
667
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|
472 public void start(int count, Callback callback, Object token) { |
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473 if (inspectorLifecycle != null) { |
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|
474 inspectorLifecycle.start(count, callback, token); |
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475 } else if (lifecycleStub != null) { |
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|
476 lifecycleStub.start(count, callback, token); |
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|
477 } |
|
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Refactoring: move all encoding/decoding operations into single place, EncodingHelper
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478 } |
|
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Refactoring: move all encoding/decoding operations into single place, EncodingHelper
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|
479 |
|
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Refactoring: move all encoding/decoding operations into single place, EncodingHelper
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|
480 public void finish(Object token) { |
|
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481 if (inspectorLifecycle != null) { |
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Refactoring: move all encoding/decoding operations into single place, EncodingHelper
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|
482 inspectorLifecycle.finish(token); |
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483 } else if (lifecycleStub != null) { |
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|
484 lifecycleStub.finish(token); |
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485 } |
|
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Refactoring: move all encoding/decoding operations into single place, EncodingHelper
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|
486 csetBuilder.dispose(); |
|
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Refactoring: move all encoding/decoding operations into single place, EncodingHelper
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487 } |
|
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Refactoring: move all encoding/decoding operations into single place, EncodingHelper
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|
488 |
|
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489 } |
|
0
dbd663faec1f
Basic changelog parsing
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents:
diff
changeset
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490 } |