Binary bigram lookup checks both uppercase and lowercase when previous word is uppercase. (0806bb01) · Commits · e / os / android_packages_inputmethods_LatinIME

java/src/com/android/inputmethod/latin/StringUtils.java

+17 −0

Original line number	Diff line number	Diff line
		@@ -122,6 +122,23 @@ public class StringUtils {
		return true;
		}

		/**
		* Returns true if cs contains any upper case characters.
		*
		* @param cs the CharSequence to check
		* @return {@code true} if cs contains any upper case characters, {@code false} otherwise.
		*/
		public static boolean hasUpperCase(final CharSequence cs) {
		final int length = cs.length();
		for (int i = 0, cp = 0; i < length; i += Character.charCount(cp)) {
		cp = Character.codePointAt(cs, i);
		if (Character.isUpperCase(cp)) {
		return true;
		}
		}
		return false;
		}

		/**
		* Remove duplicates from an array of strings.
		*

java/src/com/android/inputmethod/latin/Suggest.java

+20 −14

Original line number	Diff line number	Diff line
		@@ -242,13 +242,8 @@ public class Suggest implements Dictionary.WordCallback {

		mBigramSuggestions = new ArrayList<SuggestedWordInfo>(PREF_MAX_BIGRAMS);

		CharSequence lowerPrevWord = prevWordForBigram.toString().toLowerCase();
		if (mMainDict != null && mMainDict.isValidWord(lowerPrevWord)) {
		prevWordForBigram = lowerPrevWord;
		}
		for (final Dictionary dictionary : mBigramDictionaries.values()) {
		dictionary.getBigrams(sEmptyWordComposer, prevWordForBigram, this);
		}
		getAllBigrams(prevWordForBigram, sEmptyWordComposer);

		// Nothing entered: return all bigrams for the previous word
		int insertCount = Math.min(mBigramSuggestions.size(), mPrefMaxSuggestions);
		for (int i = 0; i < insertCount; ++i) {
		@@ -290,13 +285,7 @@ public class Suggest implements Dictionary.WordCallback {
		mBigramSuggestions = new ArrayList<SuggestedWordInfo>(PREF_MAX_BIGRAMS);

		if (!TextUtils.isEmpty(prevWordForBigram)) {
		CharSequence lowerPrevWord = prevWordForBigram.toString().toLowerCase();
		if (mMainDict != null && mMainDict.isValidWord(lowerPrevWord)) {
		prevWordForBigram = lowerPrevWord;
		}
		for (final Dictionary dictionary : mBigramDictionaries.values()) {
		dictionary.getBigrams(wordComposer, prevWordForBigram, this);
		}
		getAllBigrams(prevWordForBigram, wordComposer);
		if (TextUtils.isEmpty(consideredWord)) {
		// Nothing entered: return all bigrams for the previous word
		int insertCount = Math.min(mBigramSuggestions.size(), mPrefMaxSuggestions);
		@@ -409,6 +398,23 @@ public class Suggest implements Dictionary.WordCallback {
		false /* isObsoleteSuggestions */);
		}

		/**
		* Adds all bigram predictions for prevWord. Also checks the lower case version of prevWord if
		* it contains any upper case characters.
		*/
		private void getAllBigrams(final CharSequence prevWord, final WordComposer wordComposer) {
		if (StringUtils.hasUpperCase(prevWord)) {
		// TODO: Must pay attention to locale when changing case.
		final CharSequence lowerPrevWord = prevWord.toString().toLowerCase();
		for (final Dictionary dictionary : mBigramDictionaries.values()) {
		dictionary.getBigrams(wordComposer, lowerPrevWord, this);
		}
		}
		for (final Dictionary dictionary : mBigramDictionaries.values()) {
		dictionary.getBigrams(wordComposer, prevWord, this);
		}
		}

		private static ArrayList<SuggestedWordInfo> getSuggestionsInfoListWithDebugInfo(
		final String typedWord, final ArrayList<SuggestedWordInfo> suggestions) {
		final SuggestedWordInfo typedWordInfo = suggestions.get(0);

tests/src/com/android/inputmethod/latin/StringUtilsTests.java

+11 −0

Original line number	Diff line number	Diff line
		@@ -88,4 +88,15 @@ public class StringUtilsTests extends AndroidTestCase {
		assertEquals("in 5 elements at position 2,4", "key1,key3,key5",
		StringUtils.removeFromCsvIfExists("key", "key1,key,key3,key,key5"));
		}

		public void testHasUpperCase() {
		assertTrue("single upper-case string", StringUtils.hasUpperCase("String"));
		assertTrue("multi upper-case string", StringUtils.hasUpperCase("stRInG"));
		assertTrue("all upper-case string", StringUtils.hasUpperCase("STRING"));
		assertTrue("upper-case string with non-letters", StringUtils.hasUpperCase("He's"));

		assertFalse("empty string", StringUtils.hasUpperCase(""));
		assertFalse("lower-case string", StringUtils.hasUpperCase("string"));
		assertFalse("lower-case string with non-letters", StringUtils.hasUpperCase("he's"));
		}
		}