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annotate src/com/tmate/hgkit/fs/RepositoryLookup.java @ 36:205f9b59b400

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Strip parsing logic out from console frontend
author Artem Tikhomirov <tikhomirov.artem@gmail.com>
date Thu, 13 Jan 2011 23:31:39 +0100
parents aa1912c70b36
children e34f90b9ded1
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.fs;
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5
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6 import java.io.File;
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7 import java.util.ArrayList;
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8 import java.util.Arrays;
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9 import java.util.Collections;
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10 import java.util.Iterator;
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11 import java.util.LinkedList;
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12 import java.util.List;
2
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13
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14 import com.tmate.hgkit.ll.HgRepository;
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15 import com.tmate.hgkit.ll.LocalHgRepo;
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16
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17 /**
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18 * @author artem
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19 */
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20 public class RepositoryLookup {
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21
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22 public HgRepository detect(Options opts) throws Exception {
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23 if (opts.repoLocation != null) {
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24 return detect(opts.repoLocation);
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25 }
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26 return detectFromWorkingDir();
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27 }
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28
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29 public HgRepository detect(String[] commandLineArgs) throws Exception {
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30 return detect(Options.parse(commandLineArgs));
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31 }
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32
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33 public HgRepository detectFromWorkingDir() throws Exception {
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34 return detect(System.getProperty("user.dir"));
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35 }
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36
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37 public HgRepository detect(String location) throws Exception /*FIXME Exception type, RepoInitException? */ {
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38 File dir = new File(location);
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39 File repository;
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40 do {
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41 repository = new File(dir, ".hg");
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42 if (repository.exists() && repository.isDirectory()) {
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43 break;
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44 }
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45 repository = null;
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46 dir = dir.getParentFile();
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47
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48 } while(dir != null);
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49 if (repository == null) {
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50 return new LocalHgRepo(location);
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51 }
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52 return new LocalHgRepo(repository);
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53 }
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54
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55 public static class Options {
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56
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57 public String repoLocation;
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58 public List<String> files;
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59
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60 public static Options parse(String[] commandLineArgs) {
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61 Options rv = new Options();
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62 List<String> args = Arrays.asList(commandLineArgs);
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63 LinkedList<String> files = new LinkedList<String>();
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64 for (Iterator<String> it = args.iterator(); it.hasNext(); ) {
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65 String arg = it.next();
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66 if (arg.charAt(0) == '-') {
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67 // option
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68 if (arg.length() == 1) {
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69 throw new IllegalArgumentException("Bad option: -");
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70 }
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71 switch ((int) arg.charAt(1)) {
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72 case (int) 'R' : {
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73 if (! it.hasNext()) {
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74 throw new IllegalArgumentException("Need repo location");
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75 }
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76 rv.repoLocation = it.next();
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77 break;
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78 }
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79 }
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80 } else {
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81 // filename
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82 files.add(arg);
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83 }
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84 }
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85 if (!files.isEmpty()) {
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86 rv.files = new ArrayList<String>(files);
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87 } else {
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88 rv.files = Collections.emptyList();
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89 }
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90 return rv;
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91 }
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92 }
2
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93 }