| Line | Hits | Source |
|---|---|---|
| 1 | /* | |
| 2 | ||
| 3 | Copyright 2004, Martian Software, Inc. | |
| 4 | ||
| 5 | Licensed under the Apache License, Version 2.0 (the "License"); | |
| 6 | you may not use this file except in compliance with the License. | |
| 7 | You may obtain a copy of the License at | |
| 8 | ||
| 9 | http://www.apache.org/licenses/LICENSE-2.0 | |
| 10 | ||
| 11 | Unless required by applicable law or agreed to in writing, software | |
| 12 | distributed under the License is distributed on an "AS IS" BASIS, | |
| 13 | WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. | |
| 14 | See the License for the specific language governing permissions and | |
| 15 | limitations under the License. | |
| 16 | ||
| 17 | */ | |
| 18 | ||
| 19 | package com.martiansoftware.nailgun; | |
| 20 | ||
| 21 | import java.util.Iterator; | |
| 22 | import java.util.Map; | |
| 23 | import java.util.Properties; | |
| 24 | import java.util.Set; | |
| 25 | ||
| 26 | /** | |
| 27 | * An AliasManager is used to store and lookup command Aliases by name. | |
| 28 | * See <a href="Alias.html">Alias</a> for more details. | |
| 29 | * | |
| 30 | * @author <a href="http://www.martiansoftware.com/contact.html">Marty Lamb</a> | |
| 31 | */ | |
| 32 | public class AliasManager { | |
| 33 | ||
| 34 | /** | |
| 35 | * actual alias storage | |
| 36 | */ | |
| 37 | private Map aliases; | |
| 38 | ||
| 39 | /** | |
| 40 | * Creates a new AliasManager, populating it with | |
| 41 | * default Aliases. | |
| 42 | */ | |
| 43 | 2 | public AliasManager() { |
| 44 | 2 | aliases = new java.util.HashMap(); |
| 45 | ||
| 46 | try { | |
| 47 | 2 | Properties props = new Properties(); |
| 48 | 2 | props.load(getClass().getClassLoader().getResourceAsStream("com/martiansoftware/nailgun/builtins/builtins.properties")); |
| 49 | 2 | loadFromProperties(props); |
| 50 | 0 | } catch (java.io.IOException e) { |
| 51 | 0 | System.err.println("Unable to load builtins.properties: " + e.getMessage()); |
| 52 | 2 | } |
| 53 | 2 | } |
| 54 | ||
| 55 | /** | |
| 56 | * Loads Aliases from a java.util.Properties file located at the | |
| 57 | * specified URL. The properties must be of the form: | |
| 58 | * <pre><code>[alias name]=[fully qualified classname]</code></pre> | |
| 59 | * each of which may have an optional | |
| 60 | * <pre><code>[alias name].desc=[alias description]</code></pre> | |
| 61 | * | |
| 62 | * For example, to create an alias called "<code>myprog</code>" for | |
| 63 | * class <code>com.mydomain.myapp.MyProg</code>, the following properties | |
| 64 | * would be defined: | |
| 65 | * | |
| 66 | * <pre><code>myprog=com.mydomain.myapp.MyProg | |
| 67 | *myprog.desc=Runs my program. | |
| 68 | * </code></pre> | |
| 69 | * @param properties the Properties to load. | |
| 70 | */ | |
| 71 | public void loadFromProperties(java.util.Properties properties) { | |
| 72 | 2 | for (Iterator i = properties.keySet().iterator(); i.hasNext();) { |
| 73 | 20 | String key = (String) i.next(); |
| 74 | 20 | if (!key.endsWith(".desc")) { |
| 75 | try { | |
| 76 | 10 | Class clazz = Class.forName(properties.getProperty(key)); |
| 77 | 10 | String desc = properties.getProperty(key + ".desc", ""); |
| 78 | 10 | addAlias(new Alias(key, desc, clazz)); |
| 79 | 0 | } catch (ClassNotFoundException e) { |
| 80 | 0 | System.err.println("Unable to locate class " + properties.getProperty(key)); |
| 81 | 30 | } |
| 82 | } | |
| 83 | } | |
| 84 | 2 | } |
| 85 | ||
| 86 | /** | |
| 87 | * Adds an Alias, replacing any previous entries with the | |
| 88 | * same name. | |
| 89 | * @param alias the Alias to add | |
| 90 | */ | |
| 91 | public void addAlias(Alias alias) { | |
| 92 | 10 | synchronized (aliases) { |
| 93 | 10 | aliases.put(alias.getName(), alias); |
| 94 | 10 | } |
| 95 | 10 | } |
| 96 | ||
| 97 | /** | |
| 98 | * Returns a Set that is a snapshot of the Alias list. | |
| 99 | * Modifications to this Set will not impact the AliasManager | |
| 100 | * in any way. | |
| 101 | * @return a Set that is a snapshot of the Alias list. | |
| 102 | */ | |
| 103 | public Set getAliases() { | |
| 104 | 2 | Set result = new java.util.TreeSet(); |
| 105 | 2 | synchronized(aliases) { |
| 106 | 2 | result.addAll(aliases.values()); |
| 107 | 2 | } |
| 108 | 2 | return (result); |
| 109 | } | |
| 110 | ||
| 111 | /** | |
| 112 | * Removes the Alias with the specified name from the AliasManager. | |
| 113 | * If no such Alias exists in this AliasManager, this method has no effect. | |
| 114 | * @param aliasName the name of the Alias to remove | |
| 115 | */ | |
| 116 | public void removeAlias(String aliasName) { | |
| 117 | 5 | synchronized (aliases) { |
| 118 | 5 | aliases.remove(aliasName); |
| 119 | 5 | } |
| 120 | 5 | } |
| 121 | ||
| 122 | /** | |
| 123 | * Returns the Alias with the specified name | |
| 124 | * @param aliasName the name of the Alias to retrieve | |
| 125 | * @return the requested Alias, or null if no such Alias | |
| 126 | * is defined in this AliasManager. | |
| 127 | */ | |
| 128 | public Alias getAlias(String aliasName) { | |
| 129 | 10 | return ((Alias) aliases.get(aliasName)); |
| 130 | } | |
| 131 | ||
| 132 | } |
|
this report was generated by version 1.0.5 of jcoverage. |
copyright © 2003, jcoverage ltd. all rights reserved. |