1 package com.hughes.android.dictionary;
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3 import java.io.IOException;
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4 import java.io.RandomAccessFile;
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5 import java.util.ArrayList;
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6 import java.util.List;
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7 import java.util.concurrent.atomic.AtomicBoolean;
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9 import com.hughes.util.CachingList;
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10 import com.hughes.util.raf.FileList;
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11 import com.hughes.util.raf.RAFFactory;
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12 import com.hughes.util.raf.RAFSerializable;
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13 import com.hughes.util.raf.RAFSerializableSerializer;
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14 import com.hughes.util.raf.RAFSerializer;
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15 import com.hughes.util.raf.UniformFileList;
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17 public final class Dictionary implements RAFSerializable<Dictionary> {
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19 private static final String VERSION_CODE = "DictionaryVersion=1.5";
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21 static final RAFSerializer<Entry> ENTRY_SERIALIZER = new RAFSerializableSerializer<Entry>(
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23 static final RAFSerializer<Row> ROW_SERIALIZER = new RAFSerializableSerializer<Row>(
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25 static final RAFSerializer<IndexEntry> INDEX_ENTRY_SERIALIZER = new RAFSerializableSerializer<IndexEntry>(
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26 IndexEntry.RAF_FACTORY);
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28 final String dictionaryInfo;
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29 final List<Entry> entries;
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30 final LanguageData[] languageDatas = new LanguageData[2];
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32 public Dictionary(final String dictionaryInfo, final Language language0, final Language language1) {
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33 this.dictionaryInfo = dictionaryInfo;
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34 languageDatas[0] = new LanguageData(this, language0, Entry.LANG1);
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35 languageDatas[1] = new LanguageData(this, language1, Entry.LANG2);
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36 entries = new ArrayList<Entry>();
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39 public Dictionary(final RandomAccessFile raf) throws IOException {
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40 dictionaryInfo = raf.readUTF();
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41 entries = CachingList.create(FileList.create(raf, ENTRY_SERIALIZER, raf
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42 .getFilePointer()), 10000);
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43 languageDatas[0] = new LanguageData(this, raf, Entry.LANG1);
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44 languageDatas[1] = new LanguageData(this, raf, Entry.LANG2);
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45 if (!VERSION_CODE.equals(raf.readUTF())) {
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46 throw new IOException("Invalid dictionary version, expected: " + VERSION_CODE);
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50 public void write(RandomAccessFile raf) throws IOException {
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51 raf.writeUTF(dictionaryInfo);
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52 FileList.write(raf, entries, ENTRY_SERIALIZER);
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53 languageDatas[0].write(raf);
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54 languageDatas[1].write(raf);
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55 raf.writeUTF(VERSION_CODE);
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58 final class LanguageData implements RAFSerializable<LanguageData> {
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59 final Dictionary dictionary;
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60 final Language language;
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62 final List<Row> rows;
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63 final List<IndexEntry> sortedIndex;
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65 LanguageData(final Dictionary dictionary, final Language language, final byte lang) {
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66 this.dictionary = dictionary;
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67 this.language = language;
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69 rows = new ArrayList<Row>();
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70 sortedIndex = new ArrayList<IndexEntry>();
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73 LanguageData(final Dictionary dictionary, final RandomAccessFile raf, final byte lang) throws IOException {
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74 this.dictionary = dictionary;
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75 language = Language.lookup(raf.readUTF());
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76 if (language == null) {
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77 throw new RuntimeException("Unknown language.");
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80 rows = CachingList.create(UniformFileList.create(raf, ROW_SERIALIZER, raf
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81 .getFilePointer()), 10000);
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82 sortedIndex = CachingList.create(FileList.create(raf,
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83 INDEX_ENTRY_SERIALIZER, raf.getFilePointer()), 10000);
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86 public void write(final RandomAccessFile raf) throws IOException {
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87 raf.writeUTF(language.symbol);
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88 UniformFileList.write(raf, rows, ROW_SERIALIZER, 4);
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89 FileList.write(raf, sortedIndex, INDEX_ENTRY_SERIALIZER);
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92 String rowToString(final Row row, final boolean onlyFirstSubentry) {
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93 return row.isToken() ? sortedIndex.get(row.getIndex()).word : entries
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94 .get(row.getIndex()).getRawText(onlyFirstSubentry);
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97 int lookup(String word, final AtomicBoolean interrupted) {
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98 word = word.toLowerCase();
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101 int end = sortedIndex.size();
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102 while (start < end) {
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103 final int mid = (start + end) / 2;
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104 if (interrupted.get()) {
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107 final IndexEntry midEntry = sortedIndex.get(mid);
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108 if (midEntry.word.equals("pre-print")) {
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109 System.out.println();
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112 final int comp = language.sortComparator.compare(word, midEntry.word.toLowerCase());
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115 while (result > 0 && language.findComparator.compare(word, sortedIndex.get(result - 1).word.toLowerCase()) == 0) {
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117 if (interrupted.get()) {
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122 } else if (comp < 0) {
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123 // Log.d("THAD", "Upper bound: " + midEntry);
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126 // Log.d("THAD", "Lower bound: " + midEntry);
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130 return Math.min(sortedIndex.size() - 1, start);
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133 public int getPrevTokenRow(final int rowIndex) {
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134 final IndexEntry indexEntry = getIndexEntryForRow(rowIndex);
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135 final Row tokenRow = rows.get(indexEntry.startRow);
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136 assert tokenRow.isToken();
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137 final int prevTokenIndex = tokenRow.getIndex() - 1;
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138 if (indexEntry.startRow == rowIndex && prevTokenIndex >= 0) {
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139 return sortedIndex.get(prevTokenIndex).startRow;
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141 return indexEntry.startRow;
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144 public int getNextTokenRow(final int rowIndex) {
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145 final IndexEntry indexEntry = getIndexEntryForRow(rowIndex);
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146 final Row tokenRow = rows.get(indexEntry.startRow);
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147 assert tokenRow.isToken();
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148 final int nextTokenIndex = tokenRow.getIndex() + 1;
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149 if (nextTokenIndex < sortedIndex.size()) {
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150 return sortedIndex.get(nextTokenIndex).startRow;
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152 return rows.size() - 1;
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155 public IndexEntry getIndexEntryForRow(final int rowIndex) {
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156 // TODO: this kinda blows.
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160 row = rows.get(r);
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161 if (row.isToken() || row.indexEntry != null) {
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166 final IndexEntry indexEntry = row.isToken() ? sortedIndex.get(row.getIndex()) : row.indexEntry;
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167 for (; r <= rowIndex; ++r) {
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168 rows.get(r).indexEntry = indexEntry;
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170 assert rows.get(indexEntry.startRow).isToken();
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175 public static final class Row implements RAFSerializable<Row> {
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178 IndexEntry indexEntry = null;
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180 public Row(final int index) {
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181 this.index = index;
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184 static final RAFFactory<Row> RAF_FACTORY = new RAFFactory<Row>() {
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185 public Row create(RandomAccessFile raf) throws IOException {
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186 return new Row(raf.readInt());
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190 public void write(RandomAccessFile raf) throws IOException {
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191 raf.writeInt(index);
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194 boolean isToken() {
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198 public int getIndex() {
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206 public static final class IndexEntry implements RAFSerializable<IndexEntry> {
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208 final int startRow;
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210 public IndexEntry(final String word, final int startRow) {
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212 this.startRow = startRow;
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215 static final RAFFactory<IndexEntry> RAF_FACTORY = new RAFFactory<IndexEntry>() {
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216 public IndexEntry create(RandomAccessFile raf) throws IOException {
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217 final String word = raf.readUTF();
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218 final int startRow = raf.readInt();
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219 return new IndexEntry(word, startRow);
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223 public void write(final RandomAccessFile raf) throws IOException {
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224 raf.writeUTF(word);
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225 raf.writeInt(startRow);
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229 public String toString() {
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230 return word + "@" + startRow;
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