diff options
Diffstat (limited to 'java/src/com/android/inputmethod/latin/BinaryDictionary.java')
| -rw-r--r-- | java/src/com/android/inputmethod/latin/BinaryDictionary.java | 165 |
1 files changed, 113 insertions, 52 deletions
diff --git a/java/src/com/android/inputmethod/latin/BinaryDictionary.java b/java/src/com/android/inputmethod/latin/BinaryDictionary.java index 813f7d32f..08ddd25fa 100644 --- a/java/src/com/android/inputmethod/latin/BinaryDictionary.java +++ b/java/src/com/android/inputmethod/latin/BinaryDictionary.java @@ -16,10 +16,15 @@ package com.android.inputmethod.latin; +import com.android.inputmethod.keyboard.Keyboard; +import com.android.inputmethod.keyboard.KeyboardSwitcher; +import com.android.inputmethod.keyboard.ProximityInfo; + import android.content.Context; import android.content.res.AssetFileDescriptor; import android.util.Log; +import java.io.File; import java.util.Arrays; /** @@ -33,11 +38,11 @@ public class BinaryDictionary extends Dictionary { * It is necessary to keep it at this value because some languages e.g. German have * really long words. */ - protected static final int MAX_WORD_LENGTH = 48; + public static final int MAX_WORD_LENGTH = 48; + public static final int MAX_WORDS = 18; private static final String TAG = "BinaryDictionary"; - private static final int MAX_ALTERNATIVES = 16; - private static final int MAX_WORDS = 18; + private static final int MAX_PROXIMITY_CHARS_SIZE = ProximityInfo.MAX_PROXIMITY_CHARS_SIZE; private static final int MAX_BIGRAMS = 60; private static final int TYPED_LETTER_MULTIPLIER = 2; @@ -46,19 +51,32 @@ public class BinaryDictionary extends Dictionary { private int mDicTypeId; private int mNativeDict; private long mDictLength; - private final int[] mInputCodes = new int[MAX_WORD_LENGTH * MAX_ALTERNATIVES]; + private final int[] mInputCodes = new int[MAX_WORD_LENGTH * MAX_PROXIMITY_CHARS_SIZE]; private final char[] mOutputChars = new char[MAX_WORD_LENGTH * MAX_WORDS]; private final char[] mOutputChars_bigrams = new char[MAX_WORD_LENGTH * MAX_BIGRAMS]; private final int[] mFrequencies = new int[MAX_WORDS]; private final int[] mFrequencies_bigrams = new int[MAX_BIGRAMS]; - static { - try { - System.loadLibrary("jni_latinime"); - } catch (UnsatisfiedLinkError ule) { - Log.e(TAG, "Could not load native library jni_latinime"); + private final KeyboardSwitcher mKeyboardSwitcher = KeyboardSwitcher.getInstance(); + private final SubtypeSwitcher mSubtypeSwitcher = SubtypeSwitcher.getInstance(); + + private static class Flags { + private static class FlagEntry { + public final String mName; + public final int mValue; + public FlagEntry(String name, int value) { + mName = name; + mValue = value; + } } + public static final FlagEntry[] ALL_FLAGS = { + // Here should reside all flags that trigger some special processing + // These *must* match the definition in UnigramDictionary enum in + // unigram_dictionary.h so please update both at the same time. + new FlagEntry("requiresGermanUmlautProcessing", 0x1) + }; } + private int mFlags = 0; private BinaryDictionary() { } @@ -72,47 +90,80 @@ public class BinaryDictionary extends Dictionary { public static BinaryDictionary initDictionary(Context context, int resId, int dicTypeId) { synchronized (sInstance) { sInstance.closeInternal(); - if (resId != 0) { - sInstance.loadDictionary(context, resId); + try { + final AssetFileDescriptor afd = context.getResources().openRawResourceFd(resId); + if (afd == null) { + Log.e(TAG, "Found the resource but it is compressed. resId=" + resId); + return null; + } + final String sourceDir = context.getApplicationInfo().sourceDir; + final File packagePath = new File(sourceDir); + // TODO: Come up with a way to handle a directory. + if (!packagePath.isFile()) { + Log.e(TAG, "sourceDir is not a file: " + sourceDir); + return null; + } + sInstance.loadDictionary(sourceDir, afd.getStartOffset(), afd.getLength()); + sInstance.mDicTypeId = dicTypeId; + } catch (android.content.res.Resources.NotFoundException e) { + Log.e(TAG, "Could not find the resource. resId=" + resId); + return null; + } + } + sInstance.initFlags(); + return sInstance; + } + + /* package for test */ static BinaryDictionary initDictionary(File dictionary, long startOffset, + long length, int dicTypeId) { + synchronized (sInstance) { + sInstance.closeInternal(); + if (dictionary.isFile()) { + sInstance.loadDictionary(dictionary.getAbsolutePath(), startOffset, length); sInstance.mDicTypeId = dicTypeId; + } else { + Log.e(TAG, "Could not find the file. path=" + dictionary.getAbsolutePath()); + return null; } } return sInstance; } + private void initFlags() { + int flags = 0; + for (Flags.FlagEntry entry : Flags.ALL_FLAGS) { + if (mSubtypeSwitcher.currentSubtypeContainsExtraValueKey(entry.mName)) + flags |= entry.mValue; + } + mFlags = flags; + } + + static { + Utils.loadNativeLibrary(); + } + private native int openNative(String sourceDir, long dictOffset, long dictSize, int typedLetterMultiplier, int fullWordMultiplier, int maxWordLength, int maxWords, int maxAlternatives); private native void closeNative(int dict); private native boolean isValidWordNative(int nativeData, char[] word, int wordLength); - private native int getSuggestionsNative(int dict, int[] inputCodes, int codesSize, - char[] outputChars, int[] frequencies, - int[] nextLettersFrequencies, int nextLettersSize); + private native int getSuggestionsNative(int dict, int proximityInfo, int[] xCoordinates, + int[] yCoordinates, int[] inputCodes, int codesSize, int flags, char[] outputChars, + int[] frequencies); private native int getBigramsNative(int dict, char[] prevWord, int prevWordLength, int[] inputCodes, int inputCodesLength, char[] outputChars, int[] frequencies, int maxWordLength, int maxBigrams, int maxAlternatives); - private final void loadDictionary(Context context, int resId) { - try { - final AssetFileDescriptor afd = context.getResources().openRawResourceFd(resId); - if (afd == null) { - Log.e(TAG, "Found the resource but it is compressed. resId=" + resId); - return; - } - mNativeDict = openNative(context.getApplicationInfo().sourceDir, - afd.getStartOffset(), afd.getLength(), + private final void loadDictionary(String path, long startOffset, long length) { + mNativeDict = openNative(path, startOffset, length, TYPED_LETTER_MULTIPLIER, FULL_WORD_FREQ_MULTIPLIER, - MAX_WORD_LENGTH, MAX_WORDS, MAX_ALTERNATIVES); - mDictLength = afd.getLength(); - } catch (android.content.res.Resources.NotFoundException e) { - Log.e(TAG, "Could not find the resource. resId=" + resId); - return; - } + MAX_WORD_LENGTH, MAX_WORDS, MAX_PROXIMITY_CHARS_SIZE); + mDictLength = length; } @Override public void getBigrams(final WordComposer codes, final CharSequence previousWord, - final WordCallback callback, int[] nextLettersFrequencies) { + final WordCallback callback) { if (mNativeDict == 0) return; char[] chars = previousWord.toString().toCharArray(); @@ -123,11 +174,11 @@ public class BinaryDictionary extends Dictionary { Arrays.fill(mInputCodes, -1); int[] alternatives = codes.getCodesAt(0); System.arraycopy(alternatives, 0, mInputCodes, 0, - Math.min(alternatives.length, MAX_ALTERNATIVES)); + Math.min(alternatives.length, MAX_PROXIMITY_CHARS_SIZE)); int count = getBigramsNative(mNativeDict, chars, chars.length, mInputCodes, codesSize, mOutputChars_bigrams, mFrequencies_bigrams, MAX_WORD_LENGTH, MAX_BIGRAMS, - MAX_ALTERNATIVES); + MAX_PROXIMITY_CHARS_SIZE); for (int j = 0; j < count; ++j) { if (mFrequencies_bigrams[j] < 1) break; @@ -144,26 +195,9 @@ public class BinaryDictionary extends Dictionary { } @Override - public void getWords(final WordComposer codes, final WordCallback callback, - int[] nextLettersFrequencies) { - if (mNativeDict == 0) return; - - final int codesSize = codes.size(); - // Won't deal with really long words. - if (codesSize > MAX_WORD_LENGTH - 1) return; - - Arrays.fill(mInputCodes, -1); - for (int i = 0; i < codesSize; i++) { - int[] alternatives = codes.getCodesAt(i); - System.arraycopy(alternatives, 0, mInputCodes, i * MAX_ALTERNATIVES, - Math.min(alternatives.length, MAX_ALTERNATIVES)); - } - Arrays.fill(mOutputChars, (char) 0); - Arrays.fill(mFrequencies, 0); - - int count = getSuggestionsNative(mNativeDict, mInputCodes, codesSize, mOutputChars, - mFrequencies, nextLettersFrequencies, - nextLettersFrequencies != null ? nextLettersFrequencies.length : 0); + public void getWords(final WordComposer codes, final WordCallback callback) { + final int count = getSuggestions(codes, mKeyboardSwitcher.getLatinKeyboard(), + mOutputChars, mFrequencies); for (int j = 0; j < count; ++j) { if (mFrequencies[j] < 1) break; @@ -179,6 +213,33 @@ public class BinaryDictionary extends Dictionary { } } + /* package for test */ boolean isValidDictionary() { + return mNativeDict != 0; + } + + /* package for test */ int getSuggestions(final WordComposer codes, final Keyboard keyboard, + char[] outputChars, int[] frequencies) { + if (!isValidDictionary()) return -1; + + final int codesSize = codes.size(); + // Won't deal with really long words. + if (codesSize > MAX_WORD_LENGTH - 1) return -1; + + Arrays.fill(mInputCodes, WordComposer.NOT_A_CODE); + for (int i = 0; i < codesSize; i++) { + int[] alternatives = codes.getCodesAt(i); + System.arraycopy(alternatives, 0, mInputCodes, i * MAX_PROXIMITY_CHARS_SIZE, + Math.min(alternatives.length, MAX_PROXIMITY_CHARS_SIZE)); + } + Arrays.fill(outputChars, (char) 0); + Arrays.fill(frequencies, 0); + + return getSuggestionsNative( + mNativeDict, keyboard.getProximityInfo(), + codes.getXCoordinates(), codes.getYCoordinates(), mInputCodes, codesSize, + mFlags, outputChars, frequencies); + } + @Override public boolean isValidWord(CharSequence word) { if (word == null) return false; |