/******************************************
	Array containing Unicode to ASCII map 
	for bijoy
*******************************************/
var uni2bijoy_string_conversion_map = {
	// signs
	"।":"|",
	"‘":"Ô",
	"’":"Õ",
	"“":"Ò",
	"”":"Ó",

	// <JUKTAKHKHOR>
	"্র্য":"ª¨",
	"র‌্য":"i¨",
	"ক্ক":"°",
	"ক্ট":"±",
	"ক্ত":"³",
	"ক্ব":"K¡",
	"স্ক্র":"¯Œ",
	"ক্র":"µ",
	"ক্ল":"K¬",
	"ক্ষ":"¶",
	"ক্স":"•",
	"গু":"¸",
	"গ্ধ":"»",
	"গ্ন":"Mœ",
	"গ্ম":"M¥",
	"গ্ল":"Mø",
	"গ্রু":"MÖæ",
	"ঙ্ক":"¼",
	"ঙ্ক্ষ":"•¶",
	"ঙ্খ":"•L",
	"ঙ্গ":"½",
	"ঙ্ঘ":"•N",
//	"ক্স":"•",
	"চ্চ":"”P",
	"চ্ছ":"”Q",
	"চ্ছ্ব":"”Q¡",
	"চ্ঞ":"”T",
	"জ্জ্ব":"¾¡",
	"জ্জ":"¾",
	"জ্ঝ":"À",
	"জ্ঞ":"Á",
	"জ্ব":"R¡",
	"ঞ্চ":"Â",
	"ঞ্ছ":"Ã",
	"ঞ্জ":"Ä",
	"ঞ্ঝ":"Å",
	"ট্ট":"Æ",
	"ট্ব":"U¡",
	"ট্ম":"U¥",
	"ড্ড":"Ç",
	"ণ্ট":"È",
	"ণ্ঠ":"É",
	"ন্স":"Ý",
	"ণ্ড":"Ð",
	"ন্তু":"š‘",
	"ণ্ব":"Y^",
	"ত্ত":"Ë",
	"ত্ত্ব":"Ë¡",
	"ত্থ":"Ì",
	"ত্ন":"Zœ",
	"ত্ম":"Z¥",
	"ন্ত্ব":"šÍ¡",
	"ত্ব":"Z¡",
	"থ্ব":"_¡",
	"দ্গ":"˜M",
	"দ্ঘ":"˜N",
	"দ্দ":"Ï",
	"দ্ধ":"×",
	"দ্ব":"Ø",
	"দ্ব":"Ø",
	"দ্ভ":"™¢",
	"দ্ম":"Ù",
	"দ্রু":"`ªæ",
	"ধ্ব":"aŸ",
	"ধ্ম":"a¥",
	"ন্ট":"›U",
	"ন্ঠ":"Ú",
	"ন্ড":"Û",
	"ন্ত্র":"š¿",
	"ন্ত":"šÍ",
	"স্ত্র":"¯¿",
	"ত্র":"Î",
	"ন্থ":"š’",
	"ন্দ":"›`",
	"ন্দ্ব":"›Ø",
	"ন্ধ":"Ü",
	"ন্ন":"bœ",
	"ন্ব":"š^",
	"ন্ম":"b¥",
	"প্ট":"Þ",
	"প্ত":"ß",
	"প্ন":"cœ",
	"প্প":"à",
	"প্ল":"cø",
	"প্স":"á",
	"ফ্ল":"d¬",
	"ব্জ":"â",
	"ব্দ":"ã",
	"ব্ধ":"ä",
	"ব্ব":"eŸ",
	"ব্ল":"eø",
	"ভ্র":"å",
	"ম্ন":"gœ",
	"ম্প":"¤ú",
	"ম্ফ":"ç",
	"ম্ব":"¤^",
	"ম্ভ":"¤¢",
	"ম্ভ্র":"¤£",
	"ম্ম":"¤§",
	"ম্ল":"¤ø",
	"রু":"iæ",
	"রূ":"iƒ",
	"ল্ক":"é",
	"ল্গ":"ê",
	"ল্ট":"ë",
	"ল্ড":"ì",
	"ল্প":"í",
	"ল্ফ":"î",
	"ল্ব":"j¦",
	"ল্ম":"j¥",
	"ল্ল":"jø",
	"শু":"ï",
	"শ্চ":"ð",
	"শ্ন":"kœ",
	"শ্ব":"k¦",
	"শ্ম":"k¥",
	"শ্ল":"kø",
	"ষ্ক":"®‹",
	"ষ্ক্র":"®Œ",
	"ষ্ট":"ó",
	"ষ্ঠ":"ô",
	"ষ্ণ":"ò",
	"ষ্প":"®ú",
	"ষ্ফ":"õ",
	"ষ্ম":"®§",
	"স্ক":"¯‹",
	"স্ট":"÷",
	"স্খ":"ö",
	"স্ত":"¯Í",
	"স্তু":"¯‘",	
	"স্থ":"¯’",
	"স্ন":"mœ",
	"স্প":"¯ú",
	"স্ফ":"ù",
	"স্ব":"¯^",
	"স্ম":"¯§",
	"স্ল":"mø",
	"হু":"û",
	"হ্ণ":"nè",
	"হ্ন":"ý",
	"হ্ম":"þ",
	"হ্ল":"n¬",
	"হৃ":"ü",
	// Hasant char
	"র্":"©",
	// "্র":"ª",
	// "্র":"Ö",
	"্র":"«",
	"্য":"¨",
	// "&i":"ª",
	"্":"&", 

	// <VOWELS>
	"আ":"Av",
	"অ":"A",
	"ই":"B",
	"ঈ":"C",
	"উ":"D",
	"ঊ":"E",
	"ঋ":"F",
	"এ":"G",
	"ঐ":"H",
	"ও":"I",
	"ঔ":"J",

	// <CONSONANTS>
	"ক":"K",
	"খ":"L",
	"গ":"M",
	"ঘ":"N",
	"ঙ":"O",
	"চ":"P",
	"ছ":"Q",
	"জ":"R",
	"ঝ":"S",
	"ঞ":"T",
	"ট":"U",
	"ঠ":"V",
	"ড":"W",
	"ঢ":"X",
	"ণ":"Y",
	"ত":"Z",
	"থ":"_",
	"দ":"`",
	"ধ":"a",
	"ন":"b",
	"প":"c",
	"ফ":"d",
	"ব":"e",
	"ভ":"f",
	"ম":"g",
	"য":"h",
	"র":"i",
	"ল":"j",
	"শ":"k",
	"ষ":"l",
	"স":"m",
	"হ":"n",
	"ড়":"o",
	"ঢ়":"p",
	"য়":"q",
	"ৎ":"r",

	// <DIGITS>
	"০":"0",
	"১":"1",
	"২":"2",
	"৩":"3",
	"৪":"4",
	"৫":"5",
	"৬":"6",
	"৭":"7",
	"৮":"8",
	"৯":"9",

	// Kars
	// "ো":"‡v",
	// "ৌ":"‡Š",
	"া":"v",
	"ি":"w",
	"ী":"x",
	"ু":"y",
	// "ু":"z",
	"ূ":"~",
	// "ৃ":"„",
	"ৃ":"…",
	"ে":"‡",
	// "ে":"†",
	"ৈ":"‰",
	// "ৈ":"ˆ",
	"ৗ":"Š",

	 // Nukta
 	"ং":"s",
 	"ঃ":"t",
	"ঁ":"u"

}; // end uni2bijoy_string_conversion_map
/******************************************/



/******************************************
	Rearranges the folas, kars in a 
	unicode string before mapping
	to ASCII.

	\param str The unicode string
******************************************/
function ReArrangeUnicodeText(str)
{
	var barrier = 0;
    for (var i=0; i<str.length; i++)
    {
	// Change pre-kar to pre format suitable for ascii
        if (i < str.length && IsBanglaPreKar(str.charAt(i)))
        {
            var j = 1;
            while(IsBanglaBanjonborno(str.charAt(i-j)))
            {
            	if(i-j<0)
            		break;
		if(i-j<=barrier) break;		
            	if(IsBanglaHalant(str.charAt(i-j-1)))
            		j += 2;
            	else
	            	break;
            }
            var temp = str.substring(0, i-j);
            temp += str.charAt(i);
            temp += str.substring(i-j, i);
            temp += str.substring(i+1, str.length);
            str = temp;
	    barrier = i+1;
	    continue;
       }
/*
        // for 'HALANT + Consonant + Vowel'
        // it should be 'Vowel + HALANT + Consonant'
        if (i > 0 && str.charAt(i) == '\u09CD' && IsBanglaKar(str.charAt(i - 1)) && i < str.length-1)
        {
            var temp = str.substring(0, i-1);
            temp += str.charAt(i - 1);
            temp += str.charAt(i);
            temp += str.charAt(i + 1);
            temp += str.substring(i + 2, str.length);
            str = temp;
		continue;
        }

        // for 'Vowel + RA (\u09B0) + HALANT'
        // it should be 'RA (\u09B0) + HALANT + Vowel'
        if (i > 0 && i < str.length - 1 && str.charAt(i) == '\u09CD' && str.charAt(i-1) == '\u09B0'
            && IsBanglaKar(str.charAt(i + 1)))
        {
            var temp = str.substring(0, i-1);
            temp += str.charAt(i - 1);
            temp += str.charAt(i);
            temp += str.charAt(i + 1);
            temp += str.substring(i + 2, str.length);
            str = temp;
		continue;
        }
*/
        // Change refs
        if (i < str.length - 1 && IsBanglaHalant(str.charAt(i)) && str.charAt(i-1)=='র' && !IsBanglaHalant(str.charAt(i-2)))
        {
            var j = 1;
	    var found_pre_kar = 0;
            while(true)
            {
            	if(IsBanglaBanjonborno(str.charAt(i+j)) && IsBanglaHalant(str.charAt(i+j+1)))
            		j += 2;
            	else if(IsBanglaBanjonborno(str.charAt(i+j)) && IsBanglaPreKar(str.charAt(i+j+1)))
            		{ found_pre_kar = 1; break;}
            	else
	            	break;
            }
            var temp = str.substring(0, i-1);
	    temp += str.substring(i+j+1, i+j+found_pre_kar+1);
            temp += str.substring(i+1, i+j+1);
            temp += str.charAt(i-1);
            temp += str.charAt(i);
            temp += str.substring(i+j+found_pre_kar+1, str.length);
            str = temp;
            i += (j+found_pre_kar);
	    barrier = i+1;
            continue;
        }


	// nukta should be placed after kars
	// if(i<str.length-1 && IsBanglaNukta(str.charAt(i)) && IsBanglaPostKar(str.charAt(i+1)))
/*
	if(i<str.length-1 && str.charAt(i)=='ঁ' && IsBanglaPostKar(str.charAt(i+1)))
	{
        	var temp = str.substring(0, i);
		temp += str.charAt(i+1);
        	temp += str.charAt(i);
        	temp += str.substring(i+2,str.length);
        	str = temp;
	}
*/
    }

    return str;
}







/******************************************
	Converts unicode string to ascii encoded
	string.

	\param ConvertTo String representing convert to ASCII input
			   "bijoy" - To convert to bijoy
			 
	\param line The ASCII encoded string
******************************************/
function ConvertToASCII(ConvertTo, line)
{
	var conversion_map = uni2bijoy_string_conversion_map;
	if(ConvertTo=="bijoy")
		conversion_map = uni2bijoy_string_conversion_map;
	
	var myRegExp;
	myRegExp = new RegExp("ো", "g");
	line = line.replace(myRegExp, "ো");
	myRegExp = new RegExp("ৌ", "g");
	line = line.replace(myRegExp, "ৌ");

	line = ReArrangeUnicodeText(line);

	for (var unic in conversion_map)
	{
		myRegExp = new RegExp(unic, "g");
		line = line.replace(myRegExp, conversion_map[unic]);
	}

/*
	if(ConvertTo=="bijoy" || ConvertTo=="somewherein")
	{
		var temp_map = {
			"‘":"Ô",
			"’":"Õ",
			"“":"Ò",
			"”":"Ó"
		};
		for (var unic in temp_map)
		{
			myRegExp = new RegExp(unic, "g");
			line = line.replace(myRegExp, temp_map[unic]);
		}
	}

*/	
	return line;
} // end function ConvertBijoyToUnicode