// here codes represents codes for word1
private int calculateSimilarity(WordComposer composer, CharSequence word2) {
int score = 0;
CharSequence word1 = composer.getTypedWord();
int length = word1.length() < word2.length() ? word1.length() : word2.length();
for (int i = 0; i < length; i++) {
char c1 = word1.charAt(i);
char c2 = word2.charAt(i);
if (c1 == c2) {
score++;
} else {
// check code similarity?
int[] codes = composer.getCodesAt(i);
for (int code : codes) {
if ((char) code == c2) {
score++;
}
}
}
}
if (word1.charAt(word1.length() - 1) == word2.charAt(word2.length() - 1)) {
score += 3;
}
score -= Math.abs(word2.length() - word1.length()) / 2;
return score;
}
@Override
public void getBigrams(
final WordComposer composer,
final CharSequence previousWord,
final WordCallback callback,
int[] nextLettersFrequencies) {
CharSequence typed = composer.getTypedWord();
if (guesses == null) {
guesses = new ArrayList<String>(maxGuesses);
}
if (isValidWord(typed) && !guesses.contains(typed)) {
guesses.add(0, typed.toString());
}
if (typed == null || previousWord == null) {
return;
}
if (typed.length() == 0 || previousWord.length() == 0) {
return;
}
int minDist = Integer.MAX_VALUE;
// int maxScore = 0;
String firstChar = String.valueOf(typed.charAt(0));
String[] projection = {Bigrams.WORD1, Bigrams.WORD2, Bigrams.FREQ};
String selection =
"SUBSTR("
+ Bigrams.WORD2
+ ", 1, 1)=? AND "
+ Bigrams.LENGTH1
+ "<? AND "
+ Bigrams.LENGTH2
+ "<?";
String[] selectionArgs = {
firstChar,
String.valueOf(previousWord.length() + maxLengthDiff),
String.valueOf(typed.length() + maxLengthDiff)
};
String sortOrder = Bigrams.FREQ + " DESC";
Cursor c =
mContentResolver.query(
Bigrams.CONTENT_URI, projection, selection, selectionArgs, sortOrder);
while (c.moveToNext()) {
String[] guessed = {c.getString(0), c.getString(1)};
if (!guesses.contains(guessed[1])) {
int distance = levenshteinDistance(typed, guessed[0]);
distance += levenshteinDistance(previousWord.toString(), guessed[1]);
if (distance <= minDist && !guesses.contains(guessed[1])) {
minDist = distance;
int i = guesses.contains(typed) ? 1 : 0;
guesses.add(i, guessed[1]);
}
if (guesses.size() == maxGuesses) {
break;
}
}
}
c.close();
}
public void getWordsFromSwype(WordComposer composer) {
CharSequence typed = composer.getTypedWord();
if (typed == null || typed.length() == 0) {
return;
}
int minDist = Integer.MAX_VALUE;
if (isValidWord(typed) && !guesses.contains(typed)) {
guesses.add(0, typed.toString());
}
String firstChar = String.valueOf(typed.charAt(0));
String[] projection = {Unigrams.TOKEN, Unigrams.FREQ};
String selection = Unigrams.LENGTH + "<? AND SUBSTR(" + Unigrams.TOKEN + ", 1, 1)=?";
String[] selectionArgs = {String.valueOf(typed.length() + maxLengthDiff), firstChar};
Cursor c =
mContentResolver.query(
Unigrams.CONTENT_URI, projection, selection, selectionArgs, Unigrams.FREQ + " DESC");
while (c.moveToNext()) {
String curString = c.getString(0);
int distance = levenshteinDistance(typed, curString);
if (distance <= minDist && !guesses.contains(curString)) {
minDist = distance;
int i = guesses.contains(typed) ? 1 : 0;
guesses.add(i, curString);
}
if (guesses.size() == maxGuesses) {
break;
}
}
c.close();
}
@Override
public void getWords(WordComposer composer, WordCallback callback, int[] nextLettersFrequencies) {
CharSequence typed = composer.getTypedWord();
// int maxScore = 0;
int minDist = Integer.MAX_VALUE;
if (typed == null || typed.length() == 0) {
return;
}
String firstChar = String.valueOf(typed.charAt(0));
String[] projection = {Unigrams.TOKEN, Unigrams.FREQ};
String selection = Unigrams.LENGTH + "<? AND SUBSTR(" + Unigrams.TOKEN + ", 1, 1)=?";
String[] selectionArgs = {String.valueOf(typed.length() + maxLengthDiff), firstChar};
Cursor c =
mContentResolver.query(
Unigrams.CONTENT_URI, projection, selection, selectionArgs, Unigrams.FREQ + " DESC");
while (c.moveToNext()) {
String curString = c.getString(0);
int distance = levenshteinDistance(typed, curString);
if (distance <= minDist && !guesses.contains(curString)) {
minDist = distance;
guesses.add(0, curString);
}
/*int score = calculateSimilarity(composer, curString);
//This is mad sketchy
// if(score >= maxScore && !guesses.contains(curString)){
maxScore = score;
guesses.add(0, curString);
}*/
if (guesses.size() == maxGuesses) {
break;
}
}
c.close();
// TODO: callback business?
}
