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annotate cmdline/org/tmatesoft/hg/console/Options.java @ 299:45dc79e545f5

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Recognize flag options (options with no arguments) in command line sample apps
author Artem Tikhomirov <tikhomirov.artem@gmail.com>
date Sat, 17 Sep 2011 13:26:52 +0200
parents b9700740553a
children
rev   line source
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1 /*
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2 * Copyright (c) 2011 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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a3a2e5deb320 Updated contact address to support@hg4j.com
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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.console;
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18
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19 import java.util.Collections;
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20 import java.util.HashMap;
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21 import java.util.LinkedList;
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22 import java.util.List;
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23 import java.util.Map;
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24 import java.util.Set;
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25 import java.util.TreeSet;
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26
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27 import org.tmatesoft.hg.repo.HgLookup;
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28 import org.tmatesoft.hg.repo.HgRepository;
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29
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30 /**
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31 * Parse command-line options. Primitive implementation that recognizes options with 0 or 1 argument.
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32 *
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33 * @author Artem Tikhomirov
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34 * @author TMate Software Ltd.
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35 */
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36 class Options {
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37
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38 public final Map<String,List<String>> opt2values = new HashMap<String, List<String>>();
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39
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40 public boolean getBoolean(String... aliases) {
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41 return getBoolean(false, aliases);
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42 }
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43
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44 public boolean getBoolean(boolean def, String... aliases) {
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45 for (String s : aliases) {
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46 if (opt2values.containsKey(s)) {
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47 return true;
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48 }
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49 }
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50 return def;
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51 }
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52
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53 public String getSingle(String... aliases) {
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54 String rv = null;
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55 for (String s : aliases) {
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56 List<String> values = opt2values.get(s);
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57 if (values != null && values.size() > 0) {
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58 rv = values.get(values.size() - 1); // take last one, most recent
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59 }
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60 }
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61 return rv;
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62 }
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64 public int getSingleInt(int def, String... aliases) {
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65 String r = getSingle(aliases);
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66 if (r == null) {
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67 return def;
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68 }
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69 return Integer.parseInt(r);
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70 }
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71
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72 public List<String> getList(String... aliases) {
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73 LinkedList<String> rv = new LinkedList<String>();
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74 for (String s : aliases) {
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75 List<String> values = opt2values.get(s);
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76 if (values != null) {
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77 rv.addAll(values);
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78 }
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79 }
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80 return rv;
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81 }
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82
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83 public HgRepository findRepository() throws Exception {
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84 String repoLocation = getSingle("-R", "--repository");
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85 if (repoLocation != null) {
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86 return new HgLookup().detect(repoLocation);
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87 }
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88 return new HgLookup().detectFromWorkingDir();
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89 }
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91
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92 public static Options parse(String[] commandLineArgs, Set<String> flagOptions) {
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93 Options rv = new Options();
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94 List<String> values = new LinkedList<String>();
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95 rv.opt2values.put("", values); // values with no options
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96 for (String arg : commandLineArgs) {
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97 if (arg.charAt(0) == '-') {
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98 // option
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99 if (arg.length() == 1) {
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100 throw new IllegalArgumentException("Bad option: -");
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101 }
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102 if (flagOptions.contains(arg)) {
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103 rv.opt2values.put(arg, Collections.<String>emptyList());
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104 values = rv.opt2values.get("");
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105 } else {
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106 values = rv.opt2values.get(arg);
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107 if (values == null) {
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108 rv.opt2values.put(arg, values = new LinkedList<String>());
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109 }
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110 }
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111 // next value, if any, gets into the values list for arg option.
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112 } else {
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113 values.add(arg);
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114 values = rv.opt2values.get("");
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115 }
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116 }
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117 return rv;
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118 }
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119
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120 public static Set<String> asSet(String... ss) {
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121 TreeSet<String> rv = new TreeSet<String>();
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122 for (String s : ss) {
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123 rv.add(s);
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124 }
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125 return rv;
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126 }
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127 }