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Merge "Add a utility method to StringUtils."

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This commit is contained in:
Keisuke Kuroyanagi 2014-02-04 12:47:21 +00:00 committed by Android (Google) Code Review
commit f32b2d5c5e
3 changed files with 25 additions and 24 deletions
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8
java/src/com/android/inputmethod/latin/BinaryDictionary.java
View File

@ -22,7 +22,6 @@ import android.util.SparseArray;
import com.android.inputmethod.annotations.UsedForTesting;
import com.android.inputmethod.keyboard.ProximityInfo;
import com.android.inputmethod.latin.SuggestedWords.SuggestedWordInfo;
import com.android.inputmethod.latin.makedict.Word;
import com.android.inputmethod.latin.settings.NativeSuggestOptions;
import com.android.inputmethod.latin.utils.CollectionUtils;
import com.android.inputmethod.latin.utils.JniUtils;
@ -352,12 +351,7 @@ public final class BinaryDictionary extends Dictionary {
public GetNextWordPropertyResult getNextWordProperty(final int token) {
final int[] codePoints = new int[MAX_WORD_LENGTH];
final int nextToken = getNextWordNative(mNativeDict, token, codePoints);
int len = 0;
// codePoints is null-terminated if its length is shorter than the array length.
while (len < MAX_WORD_LENGTH && codePoints[len] != 0) {
++len;
}
final String word = new String(codePoints, 0, len);
final String word = StringUtils.getStringFromNullTerminatedCodePointArray(codePoints);
return new GetNextWordPropertyResult(getWordProperty(word), nextToken);
}

20
java/src/com/android/inputmethod/latin/utils/StringUtils.java
View File

@ -46,7 +46,7 @@ public final class StringUtils {
public static String newSingleCodePointString(int codePoint) {
if (Character.charCount(codePoint) == 1) {
// Optimization: avoid creating an temporary array for characters that are
// Optimization: avoid creating a temporary array for characters that are
// represented by a single char value
return String.valueOf((char) codePoint);
}
@ -205,6 +205,24 @@ public final class StringUtils {
return codePoints;
}
/**
* Construct a String from a code point array
*
* @param codePoints a code point array that is null terminated when its logical length is
* shorter than the array length.
* @return a string constructed from the code point array.
*/
public static String getStringFromNullTerminatedCodePointArray(final int[] codePoints) {
int stringLength = codePoints.length;
for (int i = 0; i < codePoints.length; i++) {
if (codePoints[i] == 0) {
stringLength = i;
break;
}
}
return new String(codePoints, 0 /* offset */, stringLength);
}
// This method assumes the text is not null. For the empty string, it returns CAPITALIZE_NONE.
public static int getCapitalizationType(final String text) {
// If the first char is not uppercase, then the word is either all lower case or

21
java/src/com/android/inputmethod/latin/utils/WordProperty.java
View File

@ -61,15 +61,6 @@ public class WordProperty {
}
}
private static int getCodePointCount(final int[] codePoints) {
for (int i = 0; i < codePoints.length; i++) {
if (codePoints[i] == 0) {
return i;
}
}
return codePoints.length;
}
// This represents invalid word when the probability is BinaryDictionary.NOT_A_PROBABILITY.
public WordProperty(final int[] codePoints, final boolean isNotAWord,
final boolean isBlacklisted, final boolean hasBigram,
@ -77,7 +68,7 @@ public class WordProperty {
final ArrayList<int[]> bigramTargets, final ArrayList<int[]> bigramProbabilityInfo,
final ArrayList<int[]> shortcutTargets,
final ArrayList<Integer> shortcutProbabilities) {
mCodePoints = new String(codePoints, 0 /* offset */, getCodePointCount(codePoints));
mCodePoints = StringUtils.getStringFromNullTerminatedCodePointArray(codePoints);
mIsNotAWord = isNotAWord;
mIsBlacklisted = isBlacklisted;
mHasBigrams = hasBigram;
@ -86,9 +77,8 @@ public class WordProperty {
final int bigramTargetCount = bigramTargets.size();
for (int i = 0; i < bigramTargetCount; i++) {
final int[] bigramTargetCodePointArray = bigramTargets.get(i);
final String bigramTargetString = new String(bigramTargetCodePointArray,
0 /* offset */, getCodePointCount(bigramTargetCodePointArray));
final String bigramTargetString =
StringUtils.getStringFromNullTerminatedCodePointArray(bigramTargets.get(i));
final ProbabilityInfo bigramProbability =
new ProbabilityInfo(bigramProbabilityInfo.get(i));
mBigramTargets.add(
@ -98,9 +88,8 @@ public class WordProperty {
final int shortcutTargetCount = shortcutTargets.size();
for (int i = 0; i < shortcutTargetCount; i++) {
final int[] shortcutTargetCodePointArray = shortcutTargets.get(i);
final String shortcutTargetString = new String(shortcutTargetCodePointArray,
0 /* offset */, getCodePointCount(shortcutTargetCodePointArray));
final String shortcutTargetString =
StringUtils.getStringFromNullTerminatedCodePointArray(shortcutTargets.get(i));
mShortcutTargets.add(
new WeightedString(shortcutTargetString, shortcutProbabilities.get(i)));
}