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annotate src/com/tmate/hgkit/ll/Changelog.java @ 9:d6d2a630f4a6

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Access to underlaying file data wrapped into own Access object, implemented with FileChannel and ByteBuffer
author Artem Tikhomirov <tikhomirov.artem@gmail.com>
date Sat, 25 Dec 2010 04:45:59 +0100
parents 24bb4f365164
children e929cecae4e1
rev   line source
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1 /**
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2 * Copyright (c) 2010 Artem Tikhomirov
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3 */
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4 package com.tmate.hgkit.ll;
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5
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6 import java.util.ArrayList;
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7 import java.util.Arrays;
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8 import java.util.List;
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9
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10 /**
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11 * Representation of the Mercurial changelog file (list of ChangeSets)
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12 * @author artem
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13 */
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14 public class Changelog extends Revlog {
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16 private final RevlogStream content;
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18 /*package-local*/ Changelog(HgRepository hgRepo, RevlogStream content) {
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19 super(hgRepo);
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20 this.content = content;
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21 }
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23 public void all(final Changeset.Inspector inspector) {
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24 Revlog.Inspector i = new Revlog.Inspector() {
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25
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26 public void next(int revisionNumber, int actualLen, int baseRevision, int linkRevision, int parent1Revision, int parent2Revision, byte[] nodeid, byte[] data) {
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27 Changeset cset = Changeset.parse(data, 0, data.length);
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28 // XXX there's no guarantee for Changeset.Callback that distinct instance comes each time, consider instance reuse
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29 inspector.next(cset);
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30 }
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31 };
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32 content.iterate(0, content.revisionCount() - 1, true, i);
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33 }
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34
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35 public List<Changeset> range(int start, int end) {
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36 final ArrayList<Changeset> rv = new ArrayList<Changeset>(end - start + 1);
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37 Revlog.Inspector i = new Revlog.Inspector() {
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39 public void next(int revisionNumber, int actualLen, int baseRevision, int linkRevision, int parent1Revision, int parent2Revision, byte[] nodeid, byte[] data) {
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40 Changeset cset = Changeset.parse(data, 0, data.length);
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41 rv.add(cset);
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42 }
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43 };
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44 content.iterate(start, end, true, i);
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45 return rv;
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46 }
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48 public void range(final Changeset.Inspector inspector, final int... revisions) {
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49 if (revisions == null || revisions.length == 0) {
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50 return;
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51 }
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52 Revlog.Inspector i = new Revlog.Inspector() {
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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 if (Arrays.binarySearch(revisions, revisionNumber) >= 0) {
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56 Changeset cset = Changeset.parse(data, 0, data.length);
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57 inspector.next(cset);
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58 }
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59 }
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60 };
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61 Arrays.sort(revisions);
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62 content.iterate(revisions[0], revisions[revisions.length - 1], true, i);
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63 }
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64 }