Mercurial > hg4j

annotate src/com/tmate/hgkit/ll/HgManifest.java @ 55:05829a70b30b

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Status operation extracted into separate, cache-friendly class
author Artem Tikhomirov <tikhomirov.artem@gmail.com>
date Mon, 17 Jan 2011 04:45:09 +0100
parents b2251b7a9823
children 9429c7bd1920
rev   line source
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df8c67f3006a Basic manifest parsing to analyze what's in there
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1 /*
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2 * Copyright (c) 2010, 2011 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 /**
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7 *
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8 * @author artem
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9 */
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10 public class HgManifest extends Revlog {
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12 /*package-local*/ HgManifest(HgRepository hgRepo, RevlogStream content) {
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13 super(hgRepo, content);
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14 }
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16 public void walk(int start, int end, final Inspector inspector) {
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17 Revlog.Inspector insp = new Revlog.Inspector() {
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19 private boolean gtg = true; // good to go
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21 public void next(int revisionNumber, int actualLen, int baseRevision, int linkRevision, int parent1Revision, int parent2Revision, byte[] nodeid, byte[] data) {
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22 if (!gtg) {
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23 return;
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24 }
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25 gtg = gtg && inspector.begin(revisionNumber, new Nodeid(nodeid, true));
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26 int i;
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27 String fname = null;
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28 String flags = null;
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29 Nodeid nid = null;
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30 for (i = 0; gtg && i < actualLen; i++) {
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31 int x = i;
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32 for( ; data[i] != '\n' && i < actualLen; i++) {
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33 if (fname == null && data[i] == 0) {
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34 fname = new String(data, x, i - x);
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35 x = i+1;
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36 }
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37 }
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38 if (i < actualLen) {
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39 assert data[i] == '\n';
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40 int nodeidLen = i - x < 40 ? i-x : 40;
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41 nid = Nodeid.fromAscii(data, x, nodeidLen);
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42 if (nodeidLen + x < i) {
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43 // 'x' and 'l' for executable bits and symlinks?
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44 // hg --debug manifest shows 644 for each regular file in my repo
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45 flags = new String(data, x + nodeidLen, i-x-nodeidLen);
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46 }
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47 gtg = gtg && inspector.next(nid, fname, flags);
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48 }
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49 nid = null;
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50 fname = flags = null;
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51 }
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52 gtg = gtg && inspector.end(revisionNumber);
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53 }
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54 };
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55 content.iterate(start, end, true, insp);
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56 }
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57
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58 public interface Inspector {
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59 boolean begin(int revision, Nodeid nid);
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60 boolean next(Nodeid nid, String fname, String flags);
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61 boolean end(int revision);
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62 }
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63 }