Move code only used for dicttool and tests under tests.

Bug: 13035567
Change-Id: I13c6df013ef2b67c9bf67455d9c32d283bf9ea2e

1 files changed, 115 insertions, 0 deletions

diff --git a/tests/src/com/android/inputmethod/latin/makedict/Ver4DictDecoder.java b/tests/src/com/android/inputmethod/latin/makedict/Ver4DictDecoder.java
new file mode 100644
index 000000000..f3fad7e99
--- /dev/null
+++ b/tests/src/com/android/inputmethod/latin/makedict/Ver4DictDecoder.java
@@ -0,0 +1,115 @@
+/*
+ * Copyright (C) 2013 The Android Open Source Project
+ *
+ * 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.android.inputmethod.latin.makedict;
+
+import com.android.inputmethod.annotations.UsedForTesting;
+import com.android.inputmethod.latin.BinaryDictionary;
+import com.android.inputmethod.latin.utils.CollectionUtils;
+import com.android.inputmethod.latin.utils.FileUtils;
+
+import java.io.File;
+import java.io.FileNotFoundException;
+import java.io.IOException;
+import java.util.ArrayList;
+
+/**
+ * An implementation of binary dictionary decoder for version 4 binary dictionary.
+ */
+@UsedForTesting
+public class Ver4DictDecoder extends AbstractDictDecoder {
+    private static final String TAG = Ver4DictDecoder.class.getSimpleName();
+
+    final File mDictDirectory;
+
+    @UsedForTesting
+    /* package */ Ver4DictDecoder(final File dictDirectory, final int factoryFlag) {
+        this(dictDirectory, null /* factory */);
+    }
+
+    @UsedForTesting
+    /* package */ Ver4DictDecoder(final File dictDirectory, final DictionaryBufferFactory factory) {
+        mDictDirectory = dictDirectory;
+
+    }
+
+    @Override
+    public DictionaryHeader readHeader() throws IOException, UnsupportedFormatException {
+        // dictType is not being used in dicttool. Passing an empty string.
+        final BinaryDictionary binaryDictionary= new BinaryDictionary(
+              mDictDirectory.getAbsolutePath(), 0 /* offset */, 0 /* length */,
+              true /* useFullEditDistance */, null /* locale */,
+              "" /* dictType */, true /* isUpdatable */);
+        final DictionaryHeader header = binaryDictionary.getHeader();
+        binaryDictionary.close();
+        if (header == null) {
+            throw new IOException("Cannot read the dictionary header.");
+        }
+        return header;
+    }
+
+    @Override
+    public FusionDictionary readDictionaryBinary(final boolean deleteDictIfBroken)
+            throws FileNotFoundException, IOException, UnsupportedFormatException {
+        // dictType is not being used in dicttool. Passing an empty string.
+        final BinaryDictionary binaryDictionary = new BinaryDictionary(
+              mDictDirectory.getAbsolutePath(), 0 /* offset */, 0 /* length */,
+              true /* useFullEditDistance */, null /* locale */,
+              "" /* dictType */, true /* isUpdatable */);
+        final DictionaryHeader header = readHeader();
+        final FusionDictionary fusionDict =
+                new FusionDictionary(new FusionDictionary.PtNodeArray(), header.mDictionaryOptions);
+        int token = 0;
+        final ArrayList<WordProperty> wordProperties = CollectionUtils.newArrayList();
+        do {
+            final BinaryDictionary.GetNextWordPropertyResult result =
+                    binaryDictionary.getNextWordProperty(token);
+            final WordProperty wordProperty = result.mWordProperty;
+            if (wordProperty == null) {
+                binaryDictionary.close();
+                if (deleteDictIfBroken) {
+                    FileUtils.deleteRecursively(mDictDirectory);
+                }
+                return null;
+            }
+            wordProperties.add(wordProperty);
+            token = result.mNextToken;
+        } while (token != 0);
+
+        // Insert unigrams into the fusion dictionary.
+        for (final WordProperty wordProperty : wordProperties) {
+            if (wordProperty.mIsBlacklistEntry) {
+                fusionDict.addBlacklistEntry(wordProperty.mWord, wordProperty.mShortcutTargets,
+                        wordProperty.mIsNotAWord);
+            } else {
+                fusionDict.add(wordProperty.mWord, wordProperty.mProbabilityInfo,
+                        wordProperty.mShortcutTargets, wordProperty.mIsNotAWord);
+            }
+        }
+        // Insert bigrams into the fusion dictionary.
+        for (final WordProperty wordProperty : wordProperties) {
+            if (wordProperty.mBigrams == null) {
+                continue;
+            }
+            final String word0 = wordProperty.mWord;
+            for (final WeightedString bigram : wordProperty.mBigrams) {
+                fusionDict.setBigram(word0, bigram.mWord, bigram.mProbabilityInfo);
+            }
+        }
+        binaryDictionary.close();
+        return fusionDict;
+    }
+}