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better bengali transliteration. [master]

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This commit is contained in:
Utsob Roy 2018-08-24 14:42:27 +06:00
parent 52b6b8db73
commit 8ca1b6e864
1 changed files with 151 additions and 90 deletions
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241
app/src/main/java/nodomain/freeyourgadget/gadgetbridge/util/BengaliLanguageUtils.java
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@ -1,110 +1,171 @@
package nodomain.freeyourgadget.gadgetbridge.util;
import java.util.HashMap;
import java.util.Hashtable;
import java.util.regex.*;
public class BengaliLanguageUtils extends LanguageUtils {
private final static char BENGALI_JOIN_CHAR = '্';
private final static HashMap<Character, String> numbers = new HashMap<Character, String>() {
private final static Hashtable<String, String> composites = new Hashtable<String, String>() {
{
put('০',"0"); put('১',"1"); put('২',"2"); put('৩',"3"); put('৪',"4");
put('৫',"5"); put('৬',"6"); put('৭',"7"); put('৮',"8");
put('৯',"9");
put("ক্ষ", "kkh");
put("ঞ্চ", "NC");
put("ঞ্ছ", "NCh");
put("ঞ্জ", "Ng");
put("জ্ঞ", "gg");
put("ঞ্ঝ", "Ngh");
put("্র", "r");
put("্ল", "l");
put("ষ্ম", "SSh");
put("র্", "r");
put("্য", "y");
put("্ব", "w");
}
};
private final static Hashtable<String, String> letters = new Hashtable<String, String>() {
{
put("আ", "aa");
put("অ", "a");
put("ই", "i");
put("ঈ", "ii");
put("উ", "u");
put("ঊ", "uu");
put("ঋ", "ri");
put("এ", "e");
put("ঐ", "oi");
put("ও", "o");
put("ঔ", "ou");
put("ক", "k");
put("খ", "kh");
put("গ", "g");
put("ঘ", "gh");
put("ঙ", "ng");
put("চ", "ch");
put("ছ", "chh");
put("জ", "j");
put("ঝ", "jh");
put("ঞ", "Ng");
put("ট", "T");
put("ঠ", "Th");
put("ড", "D");
put("ঢ", "Dh");
put("ণ", "N");
put("ত", "t");
put("থ", "th");
put("দ", "d");
put("ধ", "dh");
put("ন", "n");
put("প", "p");
put("ফ", "ph");
put("ব", "b");
put("ভ", "bh");
put("ম", "m");
put("য", "J");
put("র", "r");
put("ল", "l");
put("শ", "sh");
put("ষ", "Sh");
put("স", "s");
put("হ", "h");
put("ড়", "rh");
put("ঢ়", "rH");
put("য়", "y");
put("ৎ", "t");
put("০", "0");
put("১", "1");
put("২", "2");
put("৩", "3");
put("৪", "4");
put("৫", "5");
put("৬", "6");
put("৭", "7");
put("৮", "8");
put("৯", "9");
put("া", "aa");
put("ি", "i");
put("ী", "ii");
put("ু", "u");
put("ূ", "uu");
put("ৃ", "r");
put("ে", "e");
put("ো", "o");
put("ৈ", "oi");
put("ৗ", "ou");
put("ৌ", "ou");
put("ং", "ng");
put("ঃ", "h");
put("ঁ", "nN");
put("।", ".");
}
};
private final static HashMap<Character, String> vowels = new HashMap<Character, String>() {
{
put('অ', "o"); put('আ', "a"); put('ই', "i"); put('ঈ', "ee");
put('উ', "u"); put('ঊ', "oo"); put('ঋ', "ri"); put('এ', "e");
put('ঐ', "oi"); put('ও', "o"); put('ঔ', "ou"); put('া', "a");
put('ি', "i"); put('ী', "ee"); put('ু', "u"); put('ূ', "oo");
put('ৃ', "ri"); put('ে', "e"); put('ৈ', "oi"); put('ো', "o");
put('ৌ', "ou");
}
};
private final static HashMap<Character, String> consonants = new HashMap<Character, String>() {
{
put('ঁ', ""); put('ং', "ng"); put('ঃ', "");
put('ক', "k"); put('খ', "kh"); put('গ', "g"); put('ঘ', "gh"); put('ঙ', "ng");
put('চ', "ch"); put('ছ', "ch"); put('জ', "j"); put('ঝ', "jh"); put('ঞ', "ng");
put('ট', "t"); put('ঠ', "th"); put('ড', "d"); put('ঢ', "dh"); put('ণ', "n");
put('ত', "t"); put('থ', "th"); put('দ', "d"); put('ধ', "dh"); put('ন', "n");
put('প', "p"); put('ফ', "f"); put('ব', "b"); put('ভ', "v"); put('ম', "m");
put('য', "z"); put('র', "r"); put('ল', "l"); put('শ', "sh");
put('ষ', "sh"); put('স', "s"); put('হ', "h");
put('ৎ', "t"); put('ড়', "r"); put('ঢ়', "r"); put('য়', "y");
}
};
private final static HashMap<Character, String> symbols = new HashMap<Character, String>() {
{
put('ব', "w");
put('য়', "y");
}
};
private final static HashMap<Character, String> joins = new HashMap<Character, String>() {
{
put('৳', "$");
}
};
private static boolean hasJoinedInString(String string) {
return string.contains(string);
}
private final static String pattern = "(র্){0,1}([অ-হড়-য়](্([অ-মশ-হড়-য়]))*)((‍){0,1}(্([য-ল]))){0,1}([া-ৌ]){0,1}|[্ঁঃংৎ০-৯।]| ";
public static String transliterate(String txt) {
if (txt.isEmpty()) {
return txt;
}
char[] charArray = txt.toCharArray();
StringBuilder romanizedBuilder = new StringBuilder();
char last = '\0';
for(int i = 0; i < txt.length(); i++) {
char currentChar = charArray[i];
if (symbols.containsKey(currentChar)) {
romanizedBuilder.append(symbols.get(currentChar));
Pattern r = Pattern.compile(pattern);
Matcher m = r.matcher(txt);
StringBuffer sb = new StringBuffer();
while (m.find()) {
String appendableString = "";
String reff = m.group(1);
if (reff != null) {
appendableString = appendableString + "rr";
}
else if (numbers.containsKey(currentChar)) {
romanizedBuilder.append(numbers.get(currentChar));
}
else if (vowels.containsKey(currentChar)) {
romanizedBuilder.append(vowels.get(currentChar));
}
else if (consonants.containsKey(currentChar)) {
if (last != '\0' && consonants.containsKey(last)) {
romanizedBuilder.append('o');
int g = 0;
while (g < 5) {
String key = m.group(g);
if (key != null) {
boolean hasKey = composites.containsKey(key);
if (hasKey) {
appendableString = appendableString + composites.get(key);
break;
}
hasKey = letters.containsKey(key);
if (hasKey) {
appendableString = appendableString + letters.get(key);
break;
}
}
romanizedBuilder.append(consonants.get(currentChar));
} else if (currentChar == BENGALI_JOIN_CHAR) {
if (i + 1 < txt.length() && joins.containsKey(charArray[i + 1])) {
romanizedBuilder.append(joins.get(charArray[i + 1]));
i++;
continue;
}
} else {
romanizedBuilder.append(currentChar);
g = g + 1;
}
g = 5;
while (g < 9) {
String key = m.group(g);
if (key != null) {
boolean hasKey = composites.containsKey(key);
if (hasKey) {
appendableString = appendableString + composites.get(key);
break;
}
hasKey = letters.containsKey(key);
if (hasKey) {
appendableString = appendableString + letters.get(key);
break;
}
}
g = g + 1;
}
String kaar = m.group(9);
if (kaar != null) {
boolean hasKey = letters.containsKey(kaar);
if (hasKey) {
appendableString = appendableString + letters.get(kaar);
}
} else if (appendableString.length() > 0 && !appendableString.equals(".")) {
appendableString = appendableString + "a";
}
String others = m.group(0);
if (others != null) {
last = currentChar;
if (appendableString.length() <= 0) {
appendableString = appendableString + others;
}
}
m.appendReplacement(sb, appendableString);
}
String romanized = romanizedBuilder.toString();
if (vowels.containsKey(charArray[charArray.length - 1])
&& hasJoinedInString(txt)
&& romanized.toCharArray()[romanized.length() - 1] == 'y') {
romanizedBuilder.append('o');
}
return romanizedBuilder.toString();
m.appendTail(sb);
return sb.toString();
}
}
}