1 /*
2 * Copyright (C) 2016 Hobrasoft s.r.o.
3 *
4 * This program is free software: you can redistribute it and/or modify
5 * it under the terms of the GNU Affero General Public License as published by
6 * the Free Software Foundation, either version 3 of the License, or
7 * (at your option) any later version.
8 *
9 * This program is distributed in the hope that it will be useful,
10 * but WITHOUT ANY WARRANTY; without even the implied warranty of
11 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
12 * GNU Affero General Public License for more details.
13 *
14 * You should have received a copy of the GNU Affero General Public License
15 * along with this program. If not, see <http://www.gnu.org/licenses/>.
16 */
17 package cz.hobrasoft.pdfmu;
18
19 import java.io.ByteArrayOutputStream;
20 import java.io.IOException;
21 import java.io.ObjectOutputStream;
22 import java.util.LinkedHashMap;
23 import java.util.List;
24 import java.util.Map;
25 import java.util.regex.Matcher;
26 import java.util.regex.Pattern;
27 import org.apache.commons.codec.binary.Hex;
28
29 /**
30 *
31 * @author <a href="mailto:filip.bartek@hobrasoft.cz">Filip Bartek</a>
32 */
33 public class PdfmuUtils {
34
35 /**
36 * Converts an array of keys and an array of values to a {@link Map}.
37 *
38 * @param <K> the type of keys.
39 * @param <V> the type of values.
40 * @param keys the array of keys. Only the keys that have a matching value
41 * are used.
42 * @param values the array of values. Only the values that have a matching
43 * key are used.
44 * @return a {@link Map} that contains a key-value pair for each index in
45 * keys and values. The order of the entries is preserved by the underlying
46 * implementation ({@link LinkedHashMap}).
47 */
48 // TODO: Rename
49 public static <K, V> Map<K, V> sortedMap(K[] keys, V[] values) {
50 Map<K, V> result = new LinkedHashMap<>();
51 int n = Math.min(keys.length, values.length);
52 for (int i = 0; i < n; ++i) {
53 result.put(keys[i], values[i]);
54 }
55 return result;
56 }
57
58 // TODO: Rename
59 public static <K, V> Map<K, V> sortedMap(Map.Entry<K, V>... entries) {
60 Map<K, V> result = new LinkedHashMap<>();
61 for (Map.Entry<K, V> entry : entries) {
62 K key = entry.getKey();
63 V value = entry.getValue();
64 result.put(key, value);
65 }
66 return result;
67 }
68
69 /**
70 * Extracts named groups from a matcher.
71 *
72 * @param m the matcher.
73 * @param names the names of the groups.
74 * @return a sorted map that assigns group values to the names.
75 */
76 public static Map<String, String> getMatcherGroups(Matcher m, List<String> names) {
77 assert m != null;
78 assert names != null;
79 Map<String, String> result = new LinkedHashMap<>();
80 for (String name : names) {
81 result.put(name, m.group(name));
82 }
83 return result;
84 }
85 }