1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
|
package de.lmu.ifi.dbs.elki.gui.util;
/*
This file is part of ELKI:
Environment for Developing KDD-Applications Supported by Index-Structures
Copyright (C) 2011
Ludwig-Maximilians-Universität München
Lehr- und Forschungseinheit für Datenbanksysteme
ELKI Development Team
This program is free software: you can redistribute it and/or modify
it under the terms of the GNU Affero General Public License as published by
the Free Software Foundation, either version 3 of the License, or
(at your option) any later version.
This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU Affero General Public License for more details.
You should have received a copy of the GNU Affero General Public License
along with this program. If not, see <http://www.gnu.org/licenses/>.
*/
import java.io.BufferedReader;
import java.io.File;
import java.io.FileInputStream;
import java.io.FileNotFoundException;
import java.io.IOException;
import java.io.InputStreamReader;
import java.io.PrintStream;
import java.util.ArrayList;
import java.util.Iterator;
import de.lmu.ifi.dbs.elki.utilities.pairs.Pair;
/**
* Class to manage saved settings in a text file.
*
* @author Erich Schubert
*/
public class SavedSettingsFile implements Iterable<Pair<String, ArrayList<String>>> {
/**
* Comment prefix
*/
public static final String COMMENT_PREFIX = "#";
/**
* File to read and write
*/
private File file;
/**
* Data store
*/
private ArrayList<Pair<String, ArrayList<String>>> store;
/**
* Constructor.
*
* @param filename Filename
*/
public SavedSettingsFile(String filename) {
super();
this.file = new File(filename);
this.store = new ArrayList<Pair<String, ArrayList<String>>>();
}
/**
* Save the current data to the given file.
*
* @throws IOException thrown on output errors.
*/
public void save() throws IOException {
PrintStream p = new PrintStream(file);
p.println(COMMENT_PREFIX + "Saved ELKI settings. First line is title, remaining lines are parameters.");
for (Pair<String, ArrayList<String>> settings : store) {
p.println(settings.first);
for (String str : settings.second) {
p.println(str);
}
p.println();
}
p.close();
}
/**
* Read the current file
*
* @throws FileNotFoundException thrown when file not found
* @throws IOException thrown on IO errprs
*/
public void load() throws FileNotFoundException, IOException {
BufferedReader is = new BufferedReader(new InputStreamReader(new FileInputStream(file)));
ArrayList<String> buf = new ArrayList<String>();
while (is.ready()) {
String line = is.readLine();
// skip comments
if (line.startsWith(COMMENT_PREFIX)) {
continue;
}
if (line.length() == 0 && buf.size() > 0) {
String title = buf.remove(0);
store.add(new Pair<String,ArrayList<String>>(title, buf));
buf = new ArrayList<String>();
} else {
buf.add(line);
}
}
if (buf.size() > 0) {
String title = buf.remove(0);
store.add(new Pair<String,ArrayList<String>>(title, buf));
buf = new ArrayList<String>();
}
}
@Override
public Iterator<Pair<String, ArrayList<String>>> iterator() {
return store.iterator();
}
/**
* Remove a given key from the file.
*
* @param key Key to remove
*/
public void remove(String key) {
Iterator<Pair<String, ArrayList<String>>> it = store.iterator();
while (it.hasNext()) {
String thisKey = it.next().first;
if (key.equals(thisKey)) {
it.remove();
break;
}
}
}
/**
* Find a saved setting by key.
*
* @param key Key to search for
* @return saved settings for this key
*/
public ArrayList<String> get(String key) {
Iterator<Pair<String, ArrayList<String>>> it = store.iterator();
while (it.hasNext()) {
Pair<String, ArrayList<String>> pair = it.next();
if (key.equals(pair.first)) {
return pair.second;
}
}
return null;
}
/**
* Remove all saved settings.
*/
public void clear() {
store.clear();
}
/**
* Add/Replace a saved setting
*
* @param key Key
* @param value (New) value.
*/
public void put(String key, ArrayList<String> value) {
Iterator<Pair<String, ArrayList<String>>> it = store.iterator();
while (it.hasNext()) {
Pair<String, ArrayList<String>> pair = it.next();
if (key.equals(pair.first)) {
pair.second = value;
return;
}
}
store.add(new Pair<String, ArrayList<String>>(key, value));
}
/**
* Return number of saved settings profiles.
*
* @return Number of saved settings profiles
*/
public int size() {
return store.size();
}
/**
* Array access.
*
* @param index settings index
* @return pair at this index
*/
public Pair<String, ArrayList<String>> getElementAt(int index) {
return store.get(index);
}
}
|
