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Code Releases Wiki Activity

Convert Arabic to contextual form

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This commit is contained in:
Roi Greenberg 2018-08-25 22:29:46 +03:00
parent 2fb80a4348
commit 2ab7bd84b6
4 changed files with 470 additions and 140 deletions
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143
app/src/main/java/nodomain/freeyourgadget/gadgetbridge/util/LanguageUtils.java
View File

@ -18,7 +18,6 @@
package nodomain.freeyourgadget.gadgetbridge.util;
import android.text.TextUtils;
import android.util.Pair;
import org.apache.commons.lang3.text.WordUtils;
@ -31,6 +30,15 @@ import java.util.Map;
import nodomain.freeyourgadget.gadgetbridge.GBApplication;
public class LanguageUtils {
/**
* Checks the status of right-to-left option
* @return true if right-to-left option is On, and false, if Off or not exist
*/
public static boolean rtlSupport()
{
return GBApplication.getPrefs().getBoolean("rtl", false);
}
//transliteration map with english equivalent for unsupported chars
private static Map<Character, String> transliterateMap = new HashMap<Character, String>(){
{
@ -156,124 +164,7 @@ public class LanguageUtils {
return string.replaceAll("\\p{M}", "");
}
/**
* Checks the status of right-to-left option
* @return true if right-to-left option is On, and false, if Off or not exist
*/
public static boolean rtlSupport()
{
return GBApplication.getPrefs().getBoolean("rtl", false);
}
//map with brackets chars to change there direction
private static Map<Character, Character> directionSignsMap = new HashMap<Character, Character>(){
{
put('(', ')'); put(')', '('); put('[', ']'); put(']', '['); put('{','}'); put('}','{');
}
};
//list of unicode ranges of rtl chars
private static ArrayList <Pair<Character, Character>> rtlRange = new ArrayList<Pair<Character, Character>>() {
{
add(new Pair<Character, Character>('\u0590', '\u05F4'));
add(new Pair<Character, Character>('\uFB1D', '\uFB4F'));
add(new Pair<Character, Character>('\u0600', '\u06FF'));
add(new Pair<Character, Character>('\u0750', '\u077F'));
add(new Pair<Character, Character>('\u08A0', '\u08FF'));
add(new Pair<Character, Character>('\uFB50', '\uFDFF'));
add(new Pair<Character, Character>('\uFE70', '\uFEFF'));
}
};
/**
* @return true if the char is in the rtl range, otherwise false
*/
private static Boolean isRtl(char c){
for (Pair<Character, Character> rang: rtlRange) {
if (rang.first <= c && c <= rang.second) {
return true;
}
}
return false;
}
//list of unicode ranges of punctuations chars
private static ArrayList <Pair<Character, Character>> punctuationsRange = new ArrayList<Pair<Character, Character>>() {
{
add(new Pair<Character, Character>('\u0021', '\u002F'));
add(new Pair<Character, Character>('\u003A', '\u0040'));
add(new Pair<Character, Character>('\u005B', '\u0060'));
add(new Pair<Character, Character>('\u007B', '\u007E'));
}
};
/**
* @return true if the char is in the punctuations range, otherwise false
*/
private static Boolean isPunctuations(char c){
for (Pair<Character, Character> rang: punctuationsRange) {
if (rang.first <= c && c <= rang.second) {
return true;
}
}
return false;
}
//list of sign that ends a word
private static ArrayList<Character> wordEndSigns = new ArrayList<Character>() {
{
add('\0');
add('\n');
add(' ');
}
};
/**
* @return true if the char is in the end of word list, otherwise false
*/
private static Boolean isWordEndSign(char c){
for (char sign: wordEndSigns){
if (c == sign){
return true;
}
}
return false;
}
/**
* The function get a string and reverse it.
* in case of end-of-word sign, it will leave it at the end.
* in case of sign with direction like brackets, it will change the direction.
* @param s - the string to reverse
* @return reversed string
*/
private static String reverse(String s) {
int j = s.length();
int startWithSpace = 0;
char[] newWord = new char[j];
if (j == 0) {
return s;
}
// remain end-of-word sign at the end
if (isWordEndSign(s.charAt(s.length() - 1))){
startWithSpace = 1;
newWord[--j] = s.charAt(s.length() - 1);
}
for (int i = 0; i < s.length() - startWithSpace; i++) {
if (LanguageUtils.directionSignsMap.containsKey(s.charAt(i))) {
newWord[--j] = LanguageUtils.directionSignsMap.get(s.charAt(i));
} else {
newWord[--j] = s.charAt(i);
}
}
return new String(newWord);
}
/**
* The function get a string and fix the rtl words.
@ -295,27 +186,29 @@ public class LanguageUtils {
int startPos = 0;
int endPos = 0;
Boolean isRtlState = LanguageUtils.isRtl(oldString.charAt(0));
Boolean isRtlState = RtlUtils.isRtl(oldString.charAt(0));
char c;
String line = "";
for (int i = 0; i < length; i++) {
c = oldString.charAt(i);
if ((LanguageUtils.isRtl(c) == isRtlState || LanguageUtils.isPunctuations(c)) && i < length - 1) {
if ((RtlUtils.isRtl(c) == isRtlState || RtlUtils.isPunctuations(c)) && i < length - 1) {
endPos++;
} else {
String word;
if (isWordEndSign(c)){
if (RtlUtils.isWordEndSign(c)){
endPos++;
}
if (i == length - 1){
endPos = length;
}
word = oldString.substring(startPos, endPos);
if (isRtlState) {
word = reverse(oldString.substring(startPos, endPos));
} else {
word = (oldString.substring(startPos, endPos));
if(RtlUtils.contextualSupport()){
word = RtlUtils.converToContextual(word);
}
word = RtlUtils.reverse(word);
}
if (line.length() + word.length() > line_max_size) {
lines.add(line + "\n");
@ -327,7 +220,7 @@ public class LanguageUtils {
line = "";
}
startPos = endPos;
if (!isWordEndSign(c)){
if (!RtlUtils.isWordEndSign(c)){
endPos++;
isRtlState = !isRtlState;
}

425
app/src/main/java/nodomain/freeyourgadget/gadgetbridge/util/RtlUtils.java Normal file
View File

@ -0,0 +1,425 @@
package nodomain.freeyourgadget.gadgetbridge.util;
import android.util.Log;
import android.util.Pair;
import java.util.ArrayList;
import java.util.HashMap;
import java.util.Map;
import nodomain.freeyourgadget.gadgetbridge.GBApplication;
class RtlUtils {
/**
* Checks the status of right-to-left option
* @return true if right-to-left option is On, and false, if Off or not exist
*/
public static boolean contextualSupport()
{
return GBApplication.getPrefs().getBoolean("contextualArabic", false);
}
//map with brackets chars to change there direction
private static Map<Character, Character> directionSignsMap = new HashMap<Character, Character>(){
{
put('(', ')'); put(')', '('); put('[', ']'); put(']', '['); put('{','}'); put('}','{');
}
};
//list of unicode ranges of rtl chars
private static ArrayList<Pair<Character, Character>> hebrewRange = new ArrayList<Pair<Character, Character>>() {
{
add(new Pair<Character, Character>('\u0590', '\u05F4'));
add(new Pair<Character, Character>('\uFB1D', '\uFB4F'));
}
};
//list of unicode ranges of rtl chars
private static ArrayList<Pair<Character, Character>> arabicRange = new ArrayList<Pair<Character, Character>>() {
{
add(new Pair<Character, Character>('\u0600', '\u06FF'));
add(new Pair<Character, Character>('\u0750', '\u077F'));
add(new Pair<Character, Character>('\u08A0', '\u08FF'));
add(new Pair<Character, Character>('\uFB50', '\uFDFF'));
add(new Pair<Character, Character>('\uFE70', '\uFEFF'));
}
};
//list of unicode ranges of rtl chars
private static ArrayList<Pair<Character, Character>> rtlRange = new ArrayList<Pair<Character, Character>>() {
{
addAll(hebrewRange);
addAll(arabicRange);
}
};
/**
* @return true if the char is in the rtl range, otherwise false
*/
static Boolean isHebrew(char c){
for (Pair<Character, Character> rang: hebrewRange) {
if (rang.first <= c && c <= rang.second) {
return true;
}
}
return false;
}
/**
* @return true if the char is in the rtl range, otherwise false
*/
static Boolean isArabic(char c){
for (Pair<Character, Character> rang: arabicRange) {
if (rang.first <= c && c <= rang.second) {
return true;
}
}
return false;
}
/**
* @return true if the char is in the rtl range, otherwise false
*/
static Boolean isRtl(char c){
for (Pair<Character, Character> rang: rtlRange) {
if (rang.first <= c && c <= rang.second) {
return true;
}
}
return false;
}
//list of unicode ranges of punctuations chars
private static ArrayList <Pair<Character, Character>> punctuationsRange = new ArrayList<Pair<Character, Character>>() {
{
add(new Pair<Character, Character>('\u0021', '\u002F'));
add(new Pair<Character, Character>('\u003A', '\u0040'));
add(new Pair<Character, Character>('\u005B', '\u0060'));
add(new Pair<Character, Character>('\u007B', '\u007E'));
}
};
/**
* @return true if the char is in the punctuations range, otherwise false
*/
static Boolean isPunctuations(char c){
for (Pair<Character, Character> rang: punctuationsRange) {
if (rang.first <= c && c <= rang.second) {
return true;
}
}
return false;
}
//list of sign that ends a word
private static ArrayList<Character> wordEndSigns = new ArrayList<Character>() {
{
add('\0');
add('\n');
add(' ');
}
};
/**
* @return true if the char is in the end of word list, otherwise false
*/
static Boolean isWordEndSign(char c){
for (char sign: wordEndSigns){
if (c == sign){
return true;
}
}
return false;
}
//map from Arabian characters to their contextual form in the beginning of the word
private static Map<Character, Character> contextualArabicIsolated = new HashMap<Character, Character>(){
{
put('ا', '\uFE8D');
put('ب', '\uFE8F');
put('ت', '\uFE95');
put('ث', '\uFE99');
put('ج', '\uFE9D');
put('ح', '\uFEA1');
put('خ', '\uFEA5');
put('د', '\uFEA9');
put('ذ', '\uFEAB');
put('ر', '\uFEAD');
put('ز', '\uFEAF');
put('س', '\uFEB1');
put('ش', '\uFEB5');
put('ص', '\uFEB9');
put('ض', '\uFEBD');
put('ط', '\uFEC1');
put('ظ', '\uFEC5');
put('ع', '\uFEC9');
put('غ', '\uFECD');
put('ف', '\uFED1');
put('ق', '\uFED5');
put('ك', '\uFED9');
put('ل', '\uFEDD');
put('م', '\uFEE1');
put('ن', '\uFEE5');
put('ه', '\uFEE9');
put('و', '\uFEED');
put('ي', '\uFEF1');
put('آ', '\uFE81');
put('ة', '\uFE93');
put('ى', '\uFEEF');
put('ئ', '\uFE89');
put('إ', '\uFE87');
put('أ', '\uFE83');
put('ء', '\uFE80');
put('ؤ', '\uFE85');
put((char)('ل' + 'آ'), '\uFEF5');
put((char)('ل' + 'أ'), '\uFEF7');
put((char)('ل' + 'إ'), '\uFEF9');
put((char)('ل' + 'ا'), '\uFEFB');
}
};
//map from Arabian characters to their contextual form in the beginning of the word
private static Map<Character, Character> contextualArabicBeginning = new HashMap<Character, Character>(){
{
put('ب', '\uFE91');
put('ت', '\uFE97');
put('ث', '\uFE9B');
put('ج', '\uFE9F');
put('ح', '\uFEA3');
put('خ', '\uFEA7');
put('س', '\uFEB3');
put('ش', '\uFEB7');
put('ص', '\uFEBB');
put('ض', '\uFEBF');
put('ط', '\uFEC3');
put('ظ', '\uFEC7');
put('ع', '\uFECB');
put('غ', '\uFECF');
put('ف', '\uFED3');
put('ق', '\uFED7');
put('ك', '\uFEDB');
put('ل', '\uFEDF');
put('م', '\uFEE3');
put('ن', '\uFEE7');
put('ه', '\uFEEB');
put('ي', '\uFEF3');
put('ئ', '\uFE8B');
}
};
//map from Arabian characters to their contextual form in the middle of the word
private static Map<Character, Character> contextualArabicMiddle = new HashMap<Character, Character>(){
{
put('ب', '\uFE92');
put('ت', '\uFE98');
put('ث', '\uFE9C');
put('ج', '\uFEA0');
put('ح', '\uFEA4');
put('خ', '\uFEA8');
put('س', '\uFEB4');
put('ش', '\uFEB8');
put('ص', '\uFEBC');
put('ض', '\uFEC0');
put('ط', '\uFEC4');
put('ظ', '\uFEC8');
put('ع', '\uFECC');
put('غ', '\uFED0');
put('ف', '\uFED4');
put('ق', '\uFED8');
put('ك', '\uFEDC');
put('ل', '\uFEE0');
put('م', '\uFEE4');
put('ن', '\uFEE8');
put('ه', '\uFEEC');
put('ي', '\uFEF4');
put('ئ', '\uFE8C');
}
};
//map from Arabian characters to their contextual form in the end of the word
private static Map<Character, Character> contextualArabicEnd = new HashMap<Character, Character>(){
{
put('ا', '\uFE8E');
put('ب', '\uFE90');
put('ت', '\uFE96');
put('ث', '\uFE9A');
put('ج', '\uFE9E');
put('ح', '\uFEA2');
put('خ', '\uFEA6');
put('د', '\uFEAA');
put('ذ', '\uFEAC');
put('ر', '\uFEAE');
put('ز', '\uFEB0');
put('س', '\uFEB2');
put('ش', '\uFEB6');
put('ص', '\uFEBA');
put('ض', '\uFEBE');
put('ط', '\uFEC2');
put('ظ', '\uFEC6');
put('ع', '\uFECA');
put('غ', '\uFECE');
put('ف', '\uFED2');
put('ق', '\uFED6');
put('ك', '\uFEDA');
put('ل', '\uFEDE');
put('م', '\uFEE2');
put('ن', '\uFEE6');
put('ه', '\uFEEA');
put('و', '\uFEEE');
put('ي', '\uFEF2');
put('آ', '\uFE82');
put('ة', '\uFE94');
put('ى', '\uFEF0');
put('ئ', '\uFE8A');
put('إ', '\uFE88');
put('أ', '\uFE84');
put('ؤ', '\uFE86');
put((char)('ل' + 'آ'), '\uFEF6');
put((char)('ل' + 'أ'), '\uFEF8');
put((char)('ل' + 'إ'), '\uFEFA');
put((char)('ل' + 'ا'), '\uFEFC');
}
};
enum contextualState{
isolate,
begin,
middle,
end
}
private static boolean exceptionAfterLam(char c){
switch (c){
case '\u0622':
case '\u0623':
case '\u0625':
case '\u0627':
return true;
default:
return false;
}
}
private static char getContextualSymbol(Character c, contextualState state) {
Character newChar;
switch (state){
case begin:
newChar = contextualArabicBeginning.get(c);
break;
case middle:
newChar = contextualArabicMiddle.get(c);
break;
case end:
newChar = contextualArabicEnd.get(c);
break;
case isolate:
default:
newChar = contextualArabicIsolated.get(c);;
}
if (newChar != null){
return newChar;
} else{
return c;
}
}
static String converToContextual(String s){
if (s == null || s.isEmpty() || s.length() == 1){
return s;
}
int length = s.length();
StringBuilder newWord = new StringBuilder(length);
Character curChar, nextChar = s.charAt(0);
contextualState prevState = contextualState.isolate;
contextualState curState = contextualState.isolate;
for (int i = 0; i < length - 1; i++){
curChar = nextChar;
nextChar = s.charAt(i + 1);
if (curChar == 'ل' && exceptionAfterLam(nextChar)){
i++;
curChar = (char)(nextChar + curChar);
if (i < length - 1) {
nextChar = s.charAt(i + 1);
}else{
nextChar = curChar;
prevState = curState;
break;
}
}
curState = getCharContextualState(prevState, curChar, nextChar);
newWord.append(getContextualSymbol(curChar, curState));
prevState = curState;
}
curState = getCharContextualState(prevState, nextChar, null);
newWord.append(getContextualSymbol(nextChar, curState));
return newWord.toString();
}
private static contextualState getCharContextualState(contextualState prevState, Character curChar, Character nextChar) {
contextualState curState;
if ((prevState == contextualState.isolate || prevState == contextualState.end) &&
contextualArabicBeginning.containsKey(curChar) &&
contextualArabicEnd.containsKey(nextChar)){
curState = contextualState.begin;
} else if ((prevState == contextualState.begin || prevState == contextualState.middle) &&
contextualArabicEnd.containsKey(curChar)){
if (contextualArabicMiddle.containsKey(curChar) && contextualArabicEnd.containsKey(nextChar)){
curState = contextualState.middle;
}else{
curState = contextualState.end;
}
}else{
curState = contextualState.isolate;
}
return curState;
}
/**
* The function get a string and reverse it.
* in case of end-of-word sign, it will leave it at the end.
* in case of sign with direction like brackets, it will change the direction.
* @param s - the string to reverse
* @return reversed string
*/
static String reverse(String s) {
int j = s.length();
int startWithSpace = 0;
char[] newWord = new char[j];
if (j == 0) {
return s;
}
// remain end-of-word sign at the end
if (isWordEndSign(s.charAt(s.length() - 1))){
startWithSpace = 1;
newWord[--j] = s.charAt(s.length() - 1);
}
for (int i = 0; i < s.length() - startWithSpace; i++) {
if (directionSignsMap.containsKey(s.charAt(i))) {
newWord[--j] = directionSignsMap.get(s.charAt(i));
} else {
newWord[--j] = s.charAt(i);
}
}
return new String(newWord);
}
}

3
app/src/main/res/values/strings.xml
View File

@ -621,4 +621,7 @@
<string name="watch9_calibration_button">Calibrate</string>
<string name="title_activity_watch9_pairing">Watch 9 pairing</string>
<string name="title_activity_watch9_calibration">Watch 9 calibration</string>
<string name="pref_title_contextual_arabic">Contextual Arabic</string>
<string name="pref_summary_contextual_arabic">Enable this to support contextual Arabic</string>
<string name="preferences_rtl_settings">Right To Left Support</string>
</resources>

39
app/src/main/res/xml/preferences.xml
View File

@ -162,23 +162,32 @@
android:summary="@string/pref_summary_transliteration"
android:title="@string/pref_title_transliteration"
/>
<PreferenceScreen
android:title="@string/preferences_rtl_settings">
<CheckBoxPreference
android:layout="@layout/preference_checkbox"
android:defaultValue="false"
android:key="rtl"
android:summary="@string/pref_summary_rtl"
android:title="@string/pref_title_rtl"
/>
<CheckBoxPreference
android:layout="@layout/preference_checkbox"
android:defaultValue="false"
android:key="rtl"
android:summary="@string/pref_summary_rtl"
android:title="@string/pref_title_rtl"
/>
<EditTextPreference
android:inputType="number"
android:key="rtl_max_line_length"
android:defaultValue="20"
android:maxLength="159"
android:title="@string/pref_rtl_max_line_length"
android:summary="@string/pref_rtl_max_line_length_summary"/>
<CheckBoxPreference
android:layout="@layout/preference_checkbox"
android:defaultValue="false"
android:key="contextualArabic"
android:summary="@string/pref_summary_contextual_arabic"
android:title="@string/pref_title_contextual_arabic"
/>
<EditTextPreference
android:inputType="number"
android:key="rtl_max_line_length"
android:defaultValue="20"
android:maxLength="159"
android:title="@string/pref_rtl_max_line_length"
android:summary="@string/pref_rtl_max_line_length_summary"/>
</PreferenceScreen>
<CheckBoxPreference
android:layout="@layout/preference_checkbox"
android:defaultValue="false"