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annotate src/com/tmate/hgkit/console/Main.java @ 14:442dc6ee647b

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author Artem Tikhomirov <tikhomirov.artem@gmail.com>
date Sun, 26 Dec 2010 14:56:08 +0100
parents aa1912c70b36
children 571e1b2cc3f7
rev   line source
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dbd663faec1f Basic changelog parsing
Artem Tikhomirov <tikhomirov.artem@gmail.com>
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1 package com.tmate.hgkit.console;
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2
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3 import java.io.BufferedInputStream;
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4 import java.io.DataInput;
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5 import java.io.DataInputStream;
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6 import java.io.File;
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7 import java.io.FileInputStream;
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8 import java.math.BigInteger;
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9 import java.util.LinkedList;
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10 import java.util.zip.Inflater;
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11
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12 import com.tmate.hgkit.ll.Changeset;
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13
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14 /**
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15 *
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16 * @author artem
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17 */
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18 public class Main {
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19
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20 public static void main(String[] args) throws Exception {
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21 String filename = "store/00changelog.i";
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22 //String filename = "store/data/hello.c.i";
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23 // String filename = "store/data/docs/readme.i";
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24 LinkedList<Changeset> changelog = new LinkedList<Changeset>();
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25 //
3
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26 DataInputStream dis = new DataInputStream(new BufferedInputStream(new FileInputStream(new File("/temp/hg/hello/.hg/" + filename))));
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27 DataInput di = dis;
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28 dis.mark(10);
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29 int versionField = di.readInt();
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30 dis.reset();
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31 final int INLINEDATA = 1 << 16;
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32
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33 boolean inlineData = (versionField & INLINEDATA) != 0;
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34 System.out.printf("%#8x, inline: %b\n", versionField, inlineData);
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35 System.out.println("\tOffset\tFlags\tPacked\t Actual\tBase Rev Link Rev\tParent1\tParent2\tnodeid");
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36 int entryCount = 0;
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37 while (dis.available() > 0) {
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38 long l = di.readLong();
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39 long offset = l >>> 16;
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40 int flags = (int) (l & 0X0FFFF);
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41 int compressedLen = di.readInt();
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42 int actualLen = di.readInt();
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43 int baseRevision = di.readInt();
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44 int linkRevision = di.readInt();
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45 int parent1Revision = di.readInt();
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46 int parent2Revision = di.readInt();
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47 byte[] buf = new byte[32];
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48 di.readFully(buf, 12, 20);
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49 dis.skip(12);
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50 System.out.printf("%14d %6X %10d %10d %10d %10d %8d %8d %040x\n", offset, flags, compressedLen, actualLen, baseRevision, linkRevision, parent1Revision, parent2Revision, new BigInteger(buf));
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51 if (inlineData) {
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52 String resultString;
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53 byte[] data = new byte[compressedLen];
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54 di.readFully(data);
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55 if (data[0] == 0x78 /* 'x' */) {
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56 Inflater zlib = new Inflater();
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57 zlib.setInput(data, 0, compressedLen);
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58 byte[] result = new byte[actualLen*2];
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59 int resultLen = zlib.inflate(result);
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60 zlib.end();
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61 resultString = new String(result, 0, resultLen, "UTF-8");
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62 } else if (data[0] == 0x75 /* 'u' */) {
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63 resultString = new String(data, 1, data.length - 1, "UTF-8");
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64 } else {
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65 resultString = new String(data);
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66 }
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67 System.out.println(resultString);
0
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68 }
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69 }
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70 dis.close();
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71 //
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72 System.out.println("\n\n");
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73 System.out.println("====================>");
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74 for (Changeset cset : changelog) {
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75 System.out.println(">");
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76 cset.dump();
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77 System.out.println("<");
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78 }
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79 }
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80 }