| 1 | /* This file is part of Aard Dictionary for Android <http://aarddict.org>. |
| 2 | * |
| 3 | * This program is free software: you can redistribute it and/or modify |
| 4 | * it under the terms of the GNU General Public License version 3 |
| 5 | * as published by the Free Software Foundation. |
| 6 | * |
| 7 | * This program is distributed in the hope that it will be useful, |
| 8 | * but WITHOUT ANY WARRANTY; without even the implied warranty of |
| 9 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
| 10 | * GNU General Public License <http://www.gnu.org/licenses/gpl-3.0.txt> |
| 11 | * for more details. |
| 12 | * |
| 13 | * Copyright (C) 2010 Igor Tkach |
| 14 | */ |
| 15 | |
| 16 | package aarddict; |
| 17 | |
| 18 | import java.io.IOException; |
| 19 | import java.util.ArrayList; |
| 20 | import java.util.Collections; |
| 21 | import java.util.Comparator; |
| 22 | import java.util.HashSet; |
| 23 | import java.util.Iterator; |
| 24 | import java.util.List; |
| 25 | import java.util.Map; |
| 26 | import java.util.Set; |
| 27 | import java.util.UUID; |
| 28 | |
| 29 | import android.util.Log; |
| 30 | |
| 31 | public final class Library extends ArrayList<Volume> { |
| 32 | |
| 33 | int maxRedirectLevels = 5; |
| 34 | |
| 35 | private final static String TAG = Library.class.getName(); |
| 36 | |
| 37 | public Iterator<Entry> followLink(final String word, String fromVolumeId) throws ArticleNotFound { |
| 38 | Log.d(TAG, String.format("Follow link \"%s\", %s", word, |
| 39 | fromVolumeId)); |
| 40 | Volume fromDict = getVolume(fromVolumeId); |
| 41 | Metadata fromMeta = fromDict.metadata; |
| 42 | |
| 43 | LookupWord lookupWord = LookupWord.splitWord(word); |
| 44 | Log.d(TAG, lookupWord.toString()); |
| 45 | String nameSpace = lookupWord.nameSpace; |
| 46 | |
| 47 | Log.d(TAG, String.format("Name space: %s", nameSpace)); |
| 48 | Map<String, String> interwikiMap = fromMeta.getInterwikiMap(); |
| 49 | String nsServerUrl = interwikiMap.get(nameSpace); |
| 50 | List<UUID> matchingDicts = findMatchingDicts(nsServerUrl); |
| 51 | if (matchingDicts.isEmpty()) |
| 52 | matchingDicts.add(fromDict.getDictionaryId()); |
| 53 | |
| 54 | if (nsServerUrl == null) { |
| 55 | //namespace did not resolve into server url, |
| 56 | //maybe it's not a name space, just article title with ":" in it |
| 57 | lookupWord.mergeNameSpace(); |
| 58 | } |
| 59 | |
| 60 | Comparator<Entry>[] comparators = EntryComparators.ALL_FULL; |
| 61 | |
| 62 | if (lookupWord.word != null) { |
| 63 | if (lookupWord.word.length() == 1) |
| 64 | comparators = EntryComparators.EXACT; |
| 65 | else |
| 66 | if (lookupWord.word.length() == 2) |
| 67 | comparators = EntryComparators.EXACT_IGNORE_CASE; |
| 68 | } |
| 69 | |
| 70 | final List<Volume> dicts = new ArrayList<Volume>(this); |
| 71 | for (int i = 0; i < matchingDicts.size(); i++) { |
| 72 | UUID target = matchingDicts.get(i); |
| 73 | Comparator<Volume> c = new PreferredDictionaryComparator(target); |
| 74 | Collections.sort(dicts.subList(i, dicts.size()), c); |
| 75 | } |
| 76 | |
| 77 | MatchIterator result = new MatchIterator(dicts, comparators, lookupWord); |
| 78 | if (result.hasNext()) { |
| 79 | return result; |
| 80 | } |
| 81 | else { |
| 82 | throw new ArticleNotFound(lookupWord); |
| 83 | } |
| 84 | } |
| 85 | |
| 86 | private List<UUID> findMatchingDicts(String serverUrl) { |
| 87 | Log.d(TAG, "Looking for dictionary with server url " |
| 88 | + serverUrl); |
| 89 | Set<UUID> seen = new HashSet<UUID>(); |
| 90 | List<UUID> result = new ArrayList<UUID>(); |
| 91 | if (serverUrl == null) { |
| 92 | Log.d(TAG, "Server url is null"); |
| 93 | return result; |
| 94 | } |
| 95 | for (Volume d : this) { |
| 96 | String articleURLTemplate = d.getArticleURLTemplate(); |
| 97 | Log.d(TAG, "Looking at article url template: " |
| 98 | + articleURLTemplate); |
| 99 | if (articleURLTemplate != null |
| 100 | && serverUrl.equals(articleURLTemplate)) { |
| 101 | Log.d(TAG, String.format( |
| 102 | "Dictionary with server url %s found: %s", serverUrl, d |
| 103 | .getDictionaryId())); |
| 104 | if (!seen.contains(d.getDictionaryId())) |
| 105 | result.add(d.getDictionaryId()); |
| 106 | } |
| 107 | } |
| 108 | if (result.isEmpty()) { |
| 109 | Log.d(TAG, String.format( |
| 110 | "Dictionary with server url %s not found", serverUrl)); |
| 111 | } |
| 112 | return result; |
| 113 | } |
| 114 | |
| 115 | public Iterator<Entry> bestMatch(String word) { |
| 116 | LookupWord lookupWord = LookupWord.splitWord(word); |
| 117 | //best match is used with human input, |
| 118 | //assume ":" is never used as namespace separator |
| 119 | lookupWord.mergeNameSpace(); |
| 120 | return new MatchIterator(EntryComparators.ALL, this, lookupWord); |
| 121 | } |
| 122 | |
| 123 | public Article getArticle(Entry e) throws IOException { |
| 124 | Volume d = getVolume(e.volumeId); |
| 125 | Article a = d.readArticle(e.articlePointer); |
| 126 | a.title = e.title; |
| 127 | a.section = e.section; |
| 128 | return a; |
| 129 | } |
| 130 | |
| 131 | Article redirect(Article article, int level) |
| 132 | throws RedirectTooManyLevels, ArticleNotFound, IOException { |
| 133 | if (level > maxRedirectLevels) { |
| 134 | throw new RedirectTooManyLevels(); |
| 135 | } |
| 136 | |
| 137 | if (!article.isRedirect()) { |
| 138 | return article; |
| 139 | } |
| 140 | |
| 141 | Iterator<Entry> result = followLink(article.getRedirect(), article.volumeId); |
| 142 | Entry redirectEntry = result.next(); |
| 143 | Article redirectArticle = getArticle(redirectEntry); |
| 144 | return redirect(redirectArticle, level + 1); |
| 145 | } |
| 146 | |
| 147 | public Article redirect(Article article) |
| 148 | throws RedirectTooManyLevels, ArticleNotFound, IOException { |
| 149 | Article result = redirect(article, 0); |
| 150 | if (result != article) { |
| 151 | result.redirectedFromTitle = article.title; |
| 152 | } |
| 153 | return result; |
| 154 | } |
| 155 | |
| 156 | public Volume getVolume(String volumeId) { |
| 157 | |
| 158 | for (Volume d : this) { |
| 159 | if (d.sha1sum.equals(volumeId)) { |
| 160 | return d; |
| 161 | } |
| 162 | } |
| 163 | return null; |
| 164 | } |
| 165 | |
| 166 | public void makeFirst(String volumeId) { |
| 167 | Volume d = getVolume(volumeId); |
| 168 | if (d != null) { |
| 169 | Comparator<Volume> c = new PreferredDictionaryComparator(d |
| 170 | .getDictionaryId()); |
| 171 | Collections.sort(this, c); |
| 172 | } |
| 173 | } |
| 174 | } |