+// Copyright 2011 Google Inc. All Rights Reserved.
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+// http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
package com.hughes.android.dictionary.engine;
+import com.hughes.android.dictionary.DictionaryInfo;
+import com.hughes.util.CachingList;
+import com.hughes.util.raf.RAFList;
+import com.hughes.util.raf.RAFListSerializer;
+import com.hughes.util.raf.RAFSerializable;
+
+import java.io.ByteArrayOutputStream;
+import java.io.DataInput;
+import java.io.DataInputStream;
+import java.io.DataOutput;
+import java.io.File;
+import java.io.IOException;
+import java.io.ObjectOutputStream;
+import java.io.PrintStream;
+import java.io.RandomAccessFile;
+import java.nio.channels.Channels;
+import java.nio.channels.FileChannel;
+import java.nio.charset.StandardCharsets;
+import java.util.ArrayList;
+import java.util.Collections;
import java.util.List;
+import java.util.zip.GZIPOutputStream;
+
+public class Dictionary implements RAFSerializable<Dictionary> {
+
+ private static final int CACHE_SIZE = 5000;
+
+ private static final int CURRENT_DICT_VERSION = 7;
+ private static final String END_OF_DICTIONARY = "END OF DICTIONARY";
+
+ // persisted
+ final int dictFileVersion;
+ private final long creationMillis;
+ public final String dictInfo;
+ public final List<PairEntry> pairEntries;
+ public final List<TextEntry> textEntries;
+ public final List<HtmlEntry> htmlEntries;
+ public final List<byte[]> htmlData;
+ public final List<EntrySource> sources;
+ public final List<Index> indices;
+
+ /**
+ * dictFileVersion 1 adds: <li>links to sources? dictFileVersion 2 adds: <li>
+ * counts of tokens in indices.
+ */
+
+ public Dictionary(final String dictInfo) {
+ this.dictFileVersion = CURRENT_DICT_VERSION;
+ this.creationMillis = System.currentTimeMillis();
+ this.dictInfo = dictInfo;
+ pairEntries = new ArrayList<>();
+ textEntries = new ArrayList<>();
+ htmlEntries = new ArrayList<>();
+ htmlData = null;
+ sources = new ArrayList<>();
+ indices = new ArrayList<>();
+ }
+
+ public Dictionary(final FileChannel ch) throws IOException {
+ DataInput raf = new DataInputStream(Channels.newInputStream(ch));
+ dictFileVersion = raf.readInt();
+ if (dictFileVersion < 0 || dictFileVersion > CURRENT_DICT_VERSION) {
+ throw new IOException("Invalid dictionary version: " + dictFileVersion);
+ }
+ creationMillis = raf.readLong();
+ dictInfo = raf.readUTF();
+
+ // Load the sources, then seek past them, because reading them later
+ // disrupts the offset.
+ try {
+ final RAFList<EntrySource> rafSources = RAFList.create(ch, new EntrySource.Serializer(
+ this), ch.position(), dictFileVersion, dictInfo + " sources: ");
+ sources = new ArrayList<>(rafSources);
+ ch.position(rafSources.getEndOffset());
+
+ pairEntries = CachingList.create(
+ RAFList.create(ch, new PairEntry.Serializer(this), ch.position(), dictFileVersion, dictInfo + " pairs: "),
+ CACHE_SIZE, false);
+ textEntries = CachingList.create(
+ RAFList.create(ch, new TextEntry.Serializer(this), ch.position(), dictFileVersion, dictInfo + " text: "),
+ CACHE_SIZE, true);
+ if (dictFileVersion >= 5) {
+ htmlEntries = CachingList.create(
+ RAFList.create(ch, new HtmlEntry.Serializer(this, ch), ch.position(), dictFileVersion, dictInfo + " html: "),
+ CACHE_SIZE, false);
+ } else {
+ htmlEntries = Collections.emptyList();
+ }
+ if (dictFileVersion >= 7) {
+ htmlData = RAFList.create(ch, new HtmlEntry.DataDeserializer(), ch.position(), dictFileVersion, dictInfo + " html: ");
+ } else {
+ htmlData = null;
+ }
+ indices = CachingList.createFullyCached(RAFList.create(ch, new IndexSerializer(ch),
+ ch.position(), dictFileVersion, dictInfo + " index: "));
+ } catch (RuntimeException e) {
+ throw new IOException("RuntimeException loading dictionary", e);
+ }
+ final String end = raf.readUTF();
+ if (!end.equals(END_OF_DICTIONARY)) {
+ throw new IOException("Dictionary seems corrupt: " + end);
+ }
+ }
+
+ @Override
+ public void write(DataOutput out) throws IOException {
+ RandomAccessFile raf = (RandomAccessFile)out;
+ if (dictFileVersion < 7) throw new RuntimeException("write function cannot write formats older than v7!");
+ raf.writeInt(dictFileVersion);
+ raf.writeLong(creationMillis);
+ raf.writeUTF(dictInfo);
+ System.out.println("sources start: " + raf.getFilePointer());
+ RAFList.write(raf, sources, new EntrySource.Serializer(this));
+ System.out.println("pair start: " + raf.getFilePointer());
+ RAFList.write(raf, pairEntries, new PairEntry.Serializer(this), 64, true);
+ System.out.println("text start: " + raf.getFilePointer());
+ RAFList.write(raf, textEntries, new TextEntry.Serializer(this));
+ System.out.println("html index start: " + raf.getFilePointer());
+ RAFList.write(raf, htmlEntries, new HtmlEntry.Serializer(this, null), 64, true);
+ System.out.println("html data start: " + raf.getFilePointer());
+ assert htmlData == null;
+ RAFList.write(raf, htmlEntries, new HtmlEntry.DataSerializer(), 128, true);
+ System.out.println("indices start: " + raf.getFilePointer());
+ RAFList.write(raf, indices, new IndexSerializer(null));
+ System.out.println("end: " + raf.getFilePointer());
+ raf.writeUTF(END_OF_DICTIONARY);
+ }
+
+ private void writev6Sources(RandomAccessFile out) throws IOException {
+ out.writeInt(sources.size());
+ long tocPos = out.getFilePointer();
+ out.seek(tocPos + sources.size() * 8 + 8);
+ for (EntrySource s : sources) {
+ long dataPos = out.getFilePointer();
+ out.seek(tocPos);
+ out.writeLong(dataPos);
+ tocPos += 8;
+ out.seek(dataPos);
+ out.writeUTF(s.getName());
+ out.writeInt(s.getNumEntries());
+ }
+ long dataPos = out.getFilePointer();
+ out.seek(tocPos);
+ out.writeLong(dataPos);
+ out.seek(dataPos);
+ }
+
+ private void writev6PairEntries(RandomAccessFile out) throws IOException {
+ out.writeInt(pairEntries.size());
+ long tocPos = out.getFilePointer();
+ out.seek(tocPos + pairEntries.size() * 8 + 8);
+ for (PairEntry pe : pairEntries) {
+ long dataPos = out.getFilePointer();
+ out.seek(tocPos);
+ out.writeLong(dataPos);
+ tocPos += 8;
+ out.seek(dataPos);
+ out.writeShort(pe.entrySource.index());
+ out.writeInt(pe.pairs.size());
+ for (PairEntry.Pair p : pe.pairs) {
+ out.writeUTF(p.lang1);
+ out.writeUTF(p.lang2);
+ }
+ }
+ long dataPos = out.getFilePointer();
+ out.seek(tocPos);
+ out.writeLong(dataPos);
+ out.seek(dataPos);
+ }
+
+ private void writev6TextEntries(RandomAccessFile out) throws IOException {
+ out.writeInt(textEntries.size());
+ long tocPos = out.getFilePointer();
+ out.seek(tocPos + textEntries.size() * 8 + 8);
+ for (TextEntry t : textEntries) {
+ long dataPos = out.getFilePointer();
+ out.seek(tocPos);
+ out.writeLong(dataPos);
+ tocPos += 8;
+ out.seek(dataPos);
+ out.writeShort(t.entrySource.index());
+ out.writeUTF(t.text);
+ }
+ long dataPos = out.getFilePointer();
+ out.seek(tocPos);
+ out.writeLong(dataPos);
+ out.seek(dataPos);
+ }
+
+ private void writev6HtmlEntries(RandomAccessFile out) throws IOException {
+ out.writeInt(htmlEntries.size());
+ long tocPos = out.getFilePointer();
+ out.seek(tocPos + htmlEntries.size() * 8 + 8);
+ for (HtmlEntry h : htmlEntries) {
+ long dataPos = out.getFilePointer();
+ out.seek(tocPos);
+ out.writeLong(dataPos);
+ tocPos += 8;
+ out.seek(dataPos);
+ out.writeShort(h.entrySource.index());
+ out.writeUTF(h.title);
+ byte[] data = h.getHtml().getBytes(StandardCharsets.UTF_8);
+ out.writeInt(data.length);
+ ByteArrayOutputStream baos = new ByteArrayOutputStream();
+ GZIPOutputStream gzout = new GZIPOutputStream(baos);
+ gzout.write(data);
+ gzout.close();
+ out.writeInt(baos.size());
+ out.write(baos.toByteArray());
+ }
+ long dataPos = out.getFilePointer();
+ out.seek(tocPos);
+ out.writeLong(dataPos);
+ out.seek(dataPos);
+ }
+
+ private void writev6HtmlIndices(RandomAccessFile out, List<HtmlEntry> entries) throws IOException {
+ out.writeInt(entries.size());
+ long tocPos = out.getFilePointer();
+ out.seek(tocPos + entries.size() * 8 + 8);
+ for (HtmlEntry e : entries) {
+ long dataPos = out.getFilePointer();
+ out.seek(tocPos);
+ out.writeLong(dataPos);
+ tocPos += 8;
+ out.seek(dataPos);
+ out.writeInt(e.index());
+ }
+ long dataPos = out.getFilePointer();
+ out.seek(tocPos);
+ out.writeLong(dataPos);
+ out.seek(dataPos);
+ }
+
+ private void writev6IndexEntries(RandomAccessFile out, List<Index.IndexEntry> entries) throws IOException {
+ out.writeInt(entries.size());
+ long tocPos = out.getFilePointer();
+ out.seek(tocPos + entries.size() * 8 + 8);
+ for (Index.IndexEntry e : entries) {
+ long dataPos = out.getFilePointer();
+ out.seek(tocPos);
+ out.writeLong(dataPos);
+ tocPos += 8;
+ out.seek(dataPos);
+ out.writeUTF(e.token);
+ out.writeInt(e.startRow);
+ out.writeInt(e.numRows);
+ final boolean hasNormalizedForm = !e.token.equals(e.normalizedToken());
+ out.writeBoolean(hasNormalizedForm);
+ if (hasNormalizedForm) out.writeUTF(e.normalizedToken());
+ writev6HtmlIndices(out, e.htmlEntries);
+ }
+ long dataPos = out.getFilePointer();
+ out.seek(tocPos);
+ out.writeLong(dataPos);
+ out.seek(dataPos);
+ }
+
+ private void writev6Index(RandomAccessFile out) throws IOException {
+ out.writeInt(indices.size());
+ long tocPos = out.getFilePointer();
+ out.seek(tocPos + indices.size() * 8 + 8);
+ for (Index idx : indices) {
+ long dataPos = out.getFilePointer();
+ out.seek(tocPos);
+ out.writeLong(dataPos);
+ tocPos += 8;
+ out.seek(dataPos);
+ out.writeUTF(idx.shortName);
+ out.writeUTF(idx.longName);
+ out.writeUTF(idx.sortLanguage.getIsoCode());
+ out.writeUTF(idx.normalizerRules);
+ out.writeBoolean(idx.swapPairEntries);
+ out.writeInt(idx.mainTokenCount);
+ writev6IndexEntries(out, idx.sortedIndexEntries);
+
+ // write stoplist, serializing the whole Set *shudder*
+ final ByteArrayOutputStream baos = new ByteArrayOutputStream();
+ final ObjectOutputStream oos = new ObjectOutputStream(baos);
+ oos.writeObject(idx.stoplist);
+ oos.close();
+ final byte[] bytes = baos.toByteArray();
+ out.writeInt(bytes.length);
+ out.write(bytes);
+
+ out.writeInt(idx.rows.size());
+ out.writeInt(5);
+ for (RowBase r : idx.rows) {
+ int type = 0;
+ if (r instanceof PairEntry.Row) {
+ type = 0;
+ } else if (r instanceof TokenRow) {
+ final TokenRow tokenRow = (TokenRow)r;
+ type = tokenRow.hasMainEntry ? 1 : 3;
+ } else if (r instanceof TextEntry.Row) {
+ type = 2;
+ } else if (r instanceof HtmlEntry.Row) {
+ type = 4;
+ } else {
+ throw new RuntimeException("Row type not supported for v6");
+ }
+ out.writeByte(type);
+ out.writeInt(r.referenceIndex);
+ }
+ }
+ long dataPos = out.getFilePointer();
+ out.seek(tocPos);
+ out.writeLong(dataPos);
+ out.seek(dataPos);
+ }
+
+ public void writev6(DataOutput out) throws IOException {
+ RandomAccessFile raf = (RandomAccessFile)out;
+ raf.writeInt(6);
+ raf.writeLong(creationMillis);
+ raf.writeUTF(dictInfo);
+ System.out.println("sources start: " + raf.getFilePointer());
+ writev6Sources(raf);
+ System.out.println("pair start: " + raf.getFilePointer());
+ writev6PairEntries(raf);
+ System.out.println("text start: " + raf.getFilePointer());
+ writev6TextEntries(raf);
+ System.out.println("html index start: " + raf.getFilePointer());
+ writev6HtmlEntries(raf);
+ System.out.println("indices start: " + raf.getFilePointer());
+ writev6Index(raf);
+ System.out.println("end: " + raf.getFilePointer());
+ raf.writeUTF(END_OF_DICTIONARY);
+ }
+
+ private final class IndexSerializer implements RAFListSerializer<Index> {
+ private final FileChannel ch;
+
+ IndexSerializer(FileChannel ch) {
+ this.ch = ch;
+ }
+
+ @Override
+ public Index read(DataInput raf, final int readIndex) throws IOException {
+ return new Index(Dictionary.this, ch, raf);
+ }
+
+ @Override
+ public void write(DataOutput raf, Index t) throws IOException {
+ t.write(raf);
+ }
+ }
+
+ final RAFListSerializer<HtmlEntry> htmlEntryIndexSerializer = new RAFListSerializer<HtmlEntry>() {
+ @Override
+ public void write(DataOutput raf, HtmlEntry t) {
+ assert false;
+ }
+
+ @Override
+ public HtmlEntry read(DataInput raf, int readIndex) throws IOException {
+ return htmlEntries.get(raf.readInt());
+ }
+ };
+
+ public void print(final PrintStream out) {
+ out.println("dictInfo=" + dictInfo);
+ for (final EntrySource entrySource : sources) {
+ out.printf("EntrySource: %s %d\n", entrySource.name, entrySource.numEntries);
+ }
+ out.println();
+ for (final Index index : indices) {
+ out.printf("Index: %s %s\n", index.shortName, index.longName);
+ index.print(out);
+ out.println();
+ }
+ }
+ public DictionaryInfo getDictionaryInfo() {
+ final DictionaryInfo result = new DictionaryInfo();
+ result.creationMillis = this.creationMillis;
+ result.dictInfo = this.dictInfo;
+ for (final Index index : indices) {
+ result.indexInfos.add(index.getIndexInfo());
+ }
+ return result;
+ }
-public class Dictionary {
-
- // persisted
- final List<PairEntry> pairEntries;
-
- // persisted
- final List<EntrySource> sources;
-
- final List<Index> indices;
+ public static DictionaryInfo getDictionaryInfo(final File file) {
+ RandomAccessFile raf = null;
+ try {
+ raf = new RandomAccessFile(file, "r");
+ final Dictionary dict = new Dictionary(raf.getChannel());
+ final DictionaryInfo dictionaryInfo = dict.getDictionaryInfo();
+ dictionaryInfo.uncompressedFilename = file.getName();
+ dictionaryInfo.uncompressedBytes = file.length();
+ raf.close();
+ return dictionaryInfo;
+ } catch (IOException e) {
+ final DictionaryInfo dictionaryInfo = new DictionaryInfo();
+ dictionaryInfo.uncompressedFilename = file.getName();
+ dictionaryInfo.uncompressedBytes = file.length();
+ return dictionaryInfo;
+ } finally {
+ if (raf != null) {
+ try {
+ raf.close();
+ } catch (IOException e) {
+ e.printStackTrace();
+ }
+ }
+ }
+ }
-
-}
\ No newline at end of file
+}
projects / Dictionary.git / blobdiff