1 | /**
|
---|
2 | *#########################################################################
|
---|
3 | *
|
---|
4 | * A component of the Gatherer application, part of the Greenstone digital
|
---|
5 | * library suite from the New Zealand Digital Library Project at the
|
---|
6 | * University of Waikato, New Zealand.
|
---|
7 | *
|
---|
8 | * Author: John Thompson, Greenstone Digital Library, University of Waikato
|
---|
9 | *
|
---|
10 | * Copyright (C) 1999 New Zealand Digital Library Project
|
---|
11 | *
|
---|
12 | * This program is free software; you can redistribute it and/or modify
|
---|
13 | * it under the terms of the GNU General Public License as published by
|
---|
14 | * the Free Software Foundation; either version 2 of the License, or
|
---|
15 | * (at your option) any later version.
|
---|
16 | *
|
---|
17 | * This program is distributed in the hope that it will be useful,
|
---|
18 | * but WITHOUT ANY WARRANTY; without even the implied warranty of
|
---|
19 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
|
---|
20 | * GNU General Public License for more details.
|
---|
21 | *
|
---|
22 | * You should have received a copy of the GNU General Public License
|
---|
23 | * along with this program; if not, write to the Free Software
|
---|
24 | * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
|
---|
25 | *########################################################################
|
---|
26 | */
|
---|
27 | package org.greenstone.gatherer.cdm;
|
---|
28 |
|
---|
29 | import java.io.*;
|
---|
30 | import java.util.*;
|
---|
31 | import org.greenstone.gatherer.DebugStream;
|
---|
32 | import org.greenstone.gatherer.util.StaticStrings;
|
---|
33 | import org.w3c.dom.*;
|
---|
34 |
|
---|
35 |
|
---|
36 | /** This class is responsible for storing information from a parsed pluginfo call in such a way that it allows easy access to parsed details for the purposes of user design and specification of plugins. */
|
---|
37 | public class Plugin
|
---|
38 | extends ArgumentContainer
|
---|
39 | {
|
---|
40 | private String default_block_expression = "";
|
---|
41 | private String default_process_expression = "";
|
---|
42 | private boolean does_explode_metadata_databases = false;
|
---|
43 |
|
---|
44 |
|
---|
45 | /** Constructor used in DOMProxyListModel initializations, and Library Level. Used for Base plugins (those in the list of available plugins, not ones that are in the DOMProxyList)
|
---|
46 | */
|
---|
47 | public Plugin() {
|
---|
48 | }
|
---|
49 |
|
---|
50 |
|
---|
51 | public Plugin(Element element, Plugin base_plugin) {
|
---|
52 | super(element, base_plugin);
|
---|
53 | }
|
---|
54 |
|
---|
55 |
|
---|
56 | /** Method to compare two plugins for ordering.
|
---|
57 | * We override the base method cos we compare by plugin name rather than toString()
|
---|
58 | */
|
---|
59 | public int compareTo(Object object) {
|
---|
60 | if(object instanceof Plugin) {
|
---|
61 | return name.compareTo(((Plugin)object).getName());
|
---|
62 | }
|
---|
63 | return -1;
|
---|
64 | }
|
---|
65 |
|
---|
66 |
|
---|
67 | /** The assigned plugin constructor.
|
---|
68 | * @param element the DOM Element this plugin is based upon
|
---|
69 | */
|
---|
70 | public DOMProxyListEntry create(Element element) {
|
---|
71 | String plugin_name = element.getAttribute(StaticStrings.TYPE_ATTRIBUTE);
|
---|
72 | // Determine the base plugin from the plugin name
|
---|
73 | Plugin base_plugin = PluginManager.getPlugin(plugin_name, true);
|
---|
74 | Plugin plugin = new Plugin(element, base_plugin);
|
---|
75 | if (base_plugin == null) {
|
---|
76 | plugin.setAssigned(false);
|
---|
77 | }
|
---|
78 | base_plugin = null;
|
---|
79 | plugin_name = null;
|
---|
80 | return plugin;
|
---|
81 | }
|
---|
82 |
|
---|
83 |
|
---|
84 | /** Checks whether the plugin this instance is based on processes metadata databases that can be exploded. */
|
---|
85 | public boolean doesExplodeMetadataDatabases()
|
---|
86 | {
|
---|
87 | Plugin base_plugin = CollectionDesignManager.plugin_manager.getPlugin(getName(), false);
|
---|
88 | if (base_plugin == null) {
|
---|
89 | return false;
|
---|
90 | }
|
---|
91 | return base_plugin.does_explode_metadata_databases;
|
---|
92 | }
|
---|
93 |
|
---|
94 |
|
---|
95 | /** Checks whether this plugin instance will process the specified file (given its block_exp). */
|
---|
96 | public boolean doesBlockFile(File file)
|
---|
97 | {
|
---|
98 | // Check the filename against the plugin's block_exp value
|
---|
99 | ArrayList arguments = getArguments();
|
---|
100 | for (int i = 0; i < arguments.size(); i++) {
|
---|
101 | Argument argument = (Argument) arguments.get(i);
|
---|
102 | if (argument.getName().equals("block_exp")) {
|
---|
103 | // Try the assigned value first, for when the user has manually set the value
|
---|
104 | String regular_expression = argument.getValue();
|
---|
105 | if (regular_expression == null || regular_expression.equals("")) {
|
---|
106 | // Not set, so use the default value
|
---|
107 | regular_expression = argument.getDefaultValue();
|
---|
108 | if (regular_expression.equals("")) {
|
---|
109 | continue;
|
---|
110 | }
|
---|
111 | }
|
---|
112 |
|
---|
113 | if (doesFileMatchRegularExpression(file, regular_expression)) {
|
---|
114 | return true;
|
---|
115 | }
|
---|
116 | }
|
---|
117 | }
|
---|
118 |
|
---|
119 | // Try the plugin's default block expression
|
---|
120 | if (!default_block_expression.equals("") && doesFileMatchRegularExpression(file, default_block_expression)) {
|
---|
121 | return true;
|
---|
122 | }
|
---|
123 |
|
---|
124 | // This plugin will (probably) not deal with the specified file
|
---|
125 | return false;
|
---|
126 | }
|
---|
127 |
|
---|
128 |
|
---|
129 | /** Checks whether this plugin instance will process the specified file (given its process_exp). */
|
---|
130 | public boolean doesProcessFile(File file)
|
---|
131 | {
|
---|
132 | // Check the filename against the plugin's process_exp value
|
---|
133 | ArrayList arguments = getArguments();
|
---|
134 | for (int i = 0; i < arguments.size(); i++) {
|
---|
135 | Argument argument = (Argument) arguments.get(i);
|
---|
136 | if (argument.getName().equals("process_exp")) {
|
---|
137 | // Try the assigned value first, for when the user has manually set the value
|
---|
138 | String regular_expression = argument.getValue();
|
---|
139 | if (regular_expression == null || regular_expression.equals("")) {
|
---|
140 | // Not set, so use the default value
|
---|
141 | regular_expression = argument.getDefaultValue();
|
---|
142 | if (regular_expression.equals("")) {
|
---|
143 | continue;
|
---|
144 | }
|
---|
145 | }
|
---|
146 |
|
---|
147 | if (doesFileMatchRegularExpression(file, regular_expression)) {
|
---|
148 | return true;
|
---|
149 | }
|
---|
150 | }
|
---|
151 | }
|
---|
152 |
|
---|
153 | // Try the plugin's default process expression
|
---|
154 | if (!default_process_expression.equals("") && doesFileMatchRegularExpression(file, default_process_expression)) {
|
---|
155 | return true;
|
---|
156 | }
|
---|
157 |
|
---|
158 | // This plugin will (probably) not deal with the specified file
|
---|
159 | return false;
|
---|
160 | }
|
---|
161 |
|
---|
162 |
|
---|
163 | private boolean doesFileMatchRegularExpression(File file, String regular_expression)
|
---|
164 | {
|
---|
165 | // The $ at the end doesn't seem to work in Java, so need to add ".*" at the start
|
---|
166 | if (regular_expression.startsWith("(?i)")) {
|
---|
167 | // Don't mess up case-insensitive matching though
|
---|
168 | regular_expression = "(?i)" + ".*" + regular_expression.substring("(?i)".length());
|
---|
169 | }
|
---|
170 | else {
|
---|
171 | regular_expression = ".*" + regular_expression;
|
---|
172 | }
|
---|
173 |
|
---|
174 | // If the filename matches the regular expression, this plugin will deal with the file in some way
|
---|
175 | if (file.getName().matches(regular_expression)) {
|
---|
176 | return true;
|
---|
177 | }
|
---|
178 |
|
---|
179 | return false;
|
---|
180 | }
|
---|
181 |
|
---|
182 |
|
---|
183 | public boolean isSeparator() {
|
---|
184 | return (element != null && element.getAttribute(StaticStrings.SEPARATOR_ATTRIBUTE).equals(StaticStrings.TRUE_STR));
|
---|
185 | }
|
---|
186 |
|
---|
187 |
|
---|
188 | public void setDefaultBlockExpression(String default_block_expression)
|
---|
189 | {
|
---|
190 | this.default_block_expression = default_block_expression;
|
---|
191 | }
|
---|
192 |
|
---|
193 |
|
---|
194 | public void setDefaultProcessExpression(String default_process_expression)
|
---|
195 | {
|
---|
196 | this.default_process_expression = default_process_expression;
|
---|
197 | }
|
---|
198 |
|
---|
199 |
|
---|
200 | public void setDoesExplodeMetadataDatabases(boolean does_explode_metadata_databases)
|
---|
201 | {
|
---|
202 | this.does_explode_metadata_databases = does_explode_metadata_databases;
|
---|
203 | }
|
---|
204 | }
|
---|