mirror of
https://codeberg.org/Freeyourgadget/Gadgetbridge.git
synced 2025-01-14 11:01:06 +01:00
426 lines
13 KiB
Java
426 lines
13 KiB
Java
package nodomain.freeyourgadget.gadgetbridge.util;
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import android.util.Log;
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import android.util.Pair;
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import java.util.ArrayList;
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import java.util.HashMap;
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import java.util.Map;
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import nodomain.freeyourgadget.gadgetbridge.GBApplication;
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class RtlUtils {
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/**
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* Checks the status of right-to-left option
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* @return true if right-to-left option is On, and false, if Off or not exist
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*/
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public static boolean contextualSupport()
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{
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return GBApplication.getPrefs().getBoolean("contextualArabic", false);
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}
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//map with brackets chars to change there direction
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private static Map<Character, Character> directionSignsMap = new HashMap<Character, Character>(){
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{
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put('(', ')'); put(')', '('); put('[', ']'); put(']', '['); put('{','}'); put('}','{');
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}
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};
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//list of unicode ranges of rtl chars
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private static ArrayList<Pair<Character, Character>> hebrewRange = new ArrayList<Pair<Character, Character>>() {
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{
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add(new Pair<Character, Character>('\u0590', '\u05F4'));
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add(new Pair<Character, Character>('\uFB1D', '\uFB4F'));
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}
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};
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//list of unicode ranges of rtl chars
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private static ArrayList<Pair<Character, Character>> arabicRange = new ArrayList<Pair<Character, Character>>() {
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{
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add(new Pair<Character, Character>('\u0600', '\u06FF'));
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add(new Pair<Character, Character>('\u0750', '\u077F'));
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add(new Pair<Character, Character>('\u08A0', '\u08FF'));
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add(new Pair<Character, Character>('\uFB50', '\uFDFF'));
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add(new Pair<Character, Character>('\uFE70', '\uFEFF'));
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}
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};
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//list of unicode ranges of rtl chars
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private static ArrayList<Pair<Character, Character>> rtlRange = new ArrayList<Pair<Character, Character>>() {
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{
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addAll(hebrewRange);
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addAll(arabicRange);
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}
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};
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/**
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* @return true if the char is in the rtl range, otherwise false
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*/
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static Boolean isHebrew(char c){
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for (Pair<Character, Character> rang: hebrewRange) {
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if (rang.first <= c && c <= rang.second) {
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return true;
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}
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}
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return false;
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}
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/**
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* @return true if the char is in the rtl range, otherwise false
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*/
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static Boolean isArabic(char c){
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for (Pair<Character, Character> rang: arabicRange) {
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if (rang.first <= c && c <= rang.second) {
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return true;
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}
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}
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return false;
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}
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/**
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* @return true if the char is in the rtl range, otherwise false
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*/
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static Boolean isRtl(char c){
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for (Pair<Character, Character> rang: rtlRange) {
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if (rang.first <= c && c <= rang.second) {
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return true;
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}
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}
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return false;
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}
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//list of unicode ranges of punctuations chars
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private static ArrayList <Pair<Character, Character>> punctuationsRange = new ArrayList<Pair<Character, Character>>() {
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{
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add(new Pair<Character, Character>('\u0021', '\u002F'));
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add(new Pair<Character, Character>('\u003A', '\u0040'));
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add(new Pair<Character, Character>('\u005B', '\u0060'));
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add(new Pair<Character, Character>('\u007B', '\u007E'));
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}
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};
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/**
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* @return true if the char is in the punctuations range, otherwise false
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*/
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static Boolean isPunctuations(char c){
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for (Pair<Character, Character> rang: punctuationsRange) {
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if (rang.first <= c && c <= rang.second) {
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return true;
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}
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}
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return false;
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}
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//list of sign that ends a word
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private static ArrayList<Character> wordEndSigns = new ArrayList<Character>() {
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{
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add('\0');
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add('\n');
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add(' ');
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}
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};
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/**
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* @return true if the char is in the end of word list, otherwise false
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*/
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static Boolean isWordEndSign(char c){
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for (char sign: wordEndSigns){
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if (c == sign){
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return true;
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}
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}
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return false;
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}
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//map from Arabian characters to their contextual form in the beginning of the word
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private static Map<Character, Character> contextualArabicIsolated = new HashMap<Character, Character>(){
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{
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put('ا', '\uFE8D');
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put('ب', '\uFE8F');
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put('ت', '\uFE95');
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put('ث', '\uFE99');
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put('ج', '\uFE9D');
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put('ح', '\uFEA1');
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put('خ', '\uFEA5');
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put('د', '\uFEA9');
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put('ذ', '\uFEAB');
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put('ر', '\uFEAD');
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put('ز', '\uFEAF');
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put('س', '\uFEB1');
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put('ش', '\uFEB5');
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put('ص', '\uFEB9');
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put('ض', '\uFEBD');
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put('ط', '\uFEC1');
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put('ظ', '\uFEC5');
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put('ع', '\uFEC9');
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put('غ', '\uFECD');
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put('ف', '\uFED1');
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put('ق', '\uFED5');
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put('ك', '\uFED9');
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put('ل', '\uFEDD');
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put('م', '\uFEE1');
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put('ن', '\uFEE5');
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put('ه', '\uFEE9');
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put('و', '\uFEED');
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put('ي', '\uFEF1');
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put('آ', '\uFE81');
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put('ة', '\uFE93');
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put('ى', '\uFEEF');
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put('ئ', '\uFE89');
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put('إ', '\uFE87');
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put('أ', '\uFE83');
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put('ء', '\uFE80');
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put('ؤ', '\uFE85');
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put((char)('ل' + 'آ'), '\uFEF5');
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put((char)('ل' + 'أ'), '\uFEF7');
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put((char)('ل' + 'إ'), '\uFEF9');
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put((char)('ل' + 'ا'), '\uFEFB');
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}
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};
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//map from Arabian characters to their contextual form in the beginning of the word
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private static Map<Character, Character> contextualArabicBeginning = new HashMap<Character, Character>(){
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{
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put('ب', '\uFE91');
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put('ت', '\uFE97');
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put('ث', '\uFE9B');
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put('ج', '\uFE9F');
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put('ح', '\uFEA3');
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put('خ', '\uFEA7');
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put('س', '\uFEB3');
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put('ش', '\uFEB7');
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put('ص', '\uFEBB');
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put('ض', '\uFEBF');
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put('ط', '\uFEC3');
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put('ظ', '\uFEC7');
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put('ع', '\uFECB');
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put('غ', '\uFECF');
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put('ف', '\uFED3');
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put('ق', '\uFED7');
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put('ك', '\uFEDB');
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put('ل', '\uFEDF');
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put('م', '\uFEE3');
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put('ن', '\uFEE7');
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put('ه', '\uFEEB');
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put('ي', '\uFEF3');
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put('ئ', '\uFE8B');
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}
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};
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//map from Arabian characters to their contextual form in the middle of the word
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private static Map<Character, Character> contextualArabicMiddle = new HashMap<Character, Character>(){
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{
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put('ب', '\uFE92');
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put('ت', '\uFE98');
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put('ث', '\uFE9C');
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put('ج', '\uFEA0');
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put('ح', '\uFEA4');
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put('خ', '\uFEA8');
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put('س', '\uFEB4');
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put('ش', '\uFEB8');
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put('ص', '\uFEBC');
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put('ض', '\uFEC0');
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put('ط', '\uFEC4');
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put('ظ', '\uFEC8');
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put('ع', '\uFECC');
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put('غ', '\uFED0');
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put('ف', '\uFED4');
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put('ق', '\uFED8');
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put('ك', '\uFEDC');
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put('ل', '\uFEE0');
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put('م', '\uFEE4');
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put('ن', '\uFEE8');
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put('ه', '\uFEEC');
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put('ي', '\uFEF4');
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put('ئ', '\uFE8C');
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}
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};
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//map from Arabian characters to their contextual form in the end of the word
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private static Map<Character, Character> contextualArabicEnd = new HashMap<Character, Character>(){
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{
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put('ا', '\uFE8E');
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put('ب', '\uFE90');
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put('ت', '\uFE96');
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put('ث', '\uFE9A');
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put('ج', '\uFE9E');
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put('ح', '\uFEA2');
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put('خ', '\uFEA6');
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put('د', '\uFEAA');
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put('ذ', '\uFEAC');
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put('ر', '\uFEAE');
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put('ز', '\uFEB0');
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put('س', '\uFEB2');
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put('ش', '\uFEB6');
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put('ص', '\uFEBA');
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put('ض', '\uFEBE');
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put('ط', '\uFEC2');
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put('ظ', '\uFEC6');
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put('ع', '\uFECA');
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put('غ', '\uFECE');
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put('ف', '\uFED2');
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put('ق', '\uFED6');
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put('ك', '\uFEDA');
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put('ل', '\uFEDE');
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put('م', '\uFEE2');
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put('ن', '\uFEE6');
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put('ه', '\uFEEA');
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put('و', '\uFEEE');
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put('ي', '\uFEF2');
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put('آ', '\uFE82');
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put('ة', '\uFE94');
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put('ى', '\uFEF0');
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put('ئ', '\uFE8A');
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put('إ', '\uFE88');
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put('أ', '\uFE84');
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put('ؤ', '\uFE86');
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put((char)('ل' + 'آ'), '\uFEF6');
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put((char)('ل' + 'أ'), '\uFEF8');
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put((char)('ل' + 'إ'), '\uFEFA');
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put((char)('ل' + 'ا'), '\uFEFC');
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}
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};
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enum contextualState{
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isolate,
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begin,
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middle,
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end
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}
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private static boolean exceptionAfterLam(char c){
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switch (c){
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case '\u0622':
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case '\u0623':
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case '\u0625':
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case '\u0627':
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return true;
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default:
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return false;
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}
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}
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private static char getContextualSymbol(Character c, contextualState state) {
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Character newChar;
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switch (state){
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case begin:
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newChar = contextualArabicBeginning.get(c);
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break;
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case middle:
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newChar = contextualArabicMiddle.get(c);
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break;
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case end:
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newChar = contextualArabicEnd.get(c);
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break;
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case isolate:
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default:
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newChar = contextualArabicIsolated.get(c);;
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}
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if (newChar != null){
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return newChar;
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} else{
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return c;
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}
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}
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static String converToContextual(String s){
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if (s == null || s.isEmpty() || s.length() == 1){
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return s;
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}
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int length = s.length();
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StringBuilder newWord = new StringBuilder(length);
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Character curChar, nextChar = s.charAt(0);
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contextualState prevState = contextualState.isolate;
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contextualState curState = contextualState.isolate;
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for (int i = 0; i < length - 1; i++){
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curChar = nextChar;
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nextChar = s.charAt(i + 1);
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if (curChar == 'ل' && exceptionAfterLam(nextChar)){
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i++;
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curChar = (char)(nextChar + curChar);
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if (i < length - 1) {
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nextChar = s.charAt(i + 1);
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}else{
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nextChar = curChar;
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prevState = curState;
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break;
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}
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}
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curState = getCharContextualState(prevState, curChar, nextChar);
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newWord.append(getContextualSymbol(curChar, curState));
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prevState = curState;
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}
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curState = getCharContextualState(prevState, nextChar, null);
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newWord.append(getContextualSymbol(nextChar, curState));
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return newWord.toString();
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}
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private static contextualState getCharContextualState(contextualState prevState, Character curChar, Character nextChar) {
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contextualState curState;
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if ((prevState == contextualState.isolate || prevState == contextualState.end) &&
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contextualArabicBeginning.containsKey(curChar) &&
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contextualArabicEnd.containsKey(nextChar)){
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curState = contextualState.begin;
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} else if ((prevState == contextualState.begin || prevState == contextualState.middle) &&
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contextualArabicEnd.containsKey(curChar)){
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if (contextualArabicMiddle.containsKey(curChar) && contextualArabicEnd.containsKey(nextChar)){
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curState = contextualState.middle;
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}else{
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curState = contextualState.end;
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}
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}else{
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curState = contextualState.isolate;
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}
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return curState;
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}
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/**
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* The function get a string and reverse it.
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* in case of end-of-word sign, it will leave it at the end.
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* in case of sign with direction like brackets, it will change the direction.
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* @param s - the string to reverse
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* @return reversed string
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*/
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static String reverse(String s) {
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int j = s.length();
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int startWithSpace = 0;
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char[] newWord = new char[j];
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if (j == 0) {
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return s;
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}
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// remain end-of-word sign at the end
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if (isWordEndSign(s.charAt(s.length() - 1))){
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startWithSpace = 1;
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newWord[--j] = s.charAt(s.length() - 1);
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}
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for (int i = 0; i < s.length() - startWithSpace; i++) {
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if (directionSignsMap.containsKey(s.charAt(i))) {
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newWord[--j] = directionSignsMap.get(s.charAt(i));
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} else {
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newWord[--j] = s.charAt(i);
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}
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}
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return new String(newWord);
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}
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}
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