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Filename : indic.php
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<?php

class indic {

function __construct() {

}


function substituteIndic($earr, $lang, $font) {
	global $voltdata;

	if (!isset($voltdata[$font])) {
		include_once(_MPDF_PATH.'includes/'.$font.'.volt.php');
		$voltdata[$font] = $volt;
	}

	foreach($earr as $eid=>$char) {
		$earr[$eid] = sprintf("%04s", strtoupper(dechex($char)));
	}
	$vstr = "0020 ".implode(" ",$earr)." 0020";
	//============================
	// Common Indic Punctuation marks
	// If NOT devanagari
	if ($lang!='hi') {
		$vstr = str_replace('0964','007C', $vstr);	// U+0964 replace with "|"
		$vstr = str_replace('0965','007C 007C', $vstr);	// U+0964 replace with "|"
	}
	//============================
	// Tamil numeral for Zero missing Added mPDF 4.2
	if ($lang=='ta') {
		$vstr = str_replace('0BE6','0030', $vstr);	// U+0BEB replace with "0"
	}

	//============================
	// Re-order vowels

	// DEVANAGARI vowel sign matraI[093F] before consonant
	if ($lang=='hi') {
		$prebasedvowels = "(093F)";
		$nukta = "093C";
		$halant = "094D";
		$vstr = preg_replace('/([A-F0-9]{4}) '.$prebasedvowels.'/','\\2 \\1', $vstr);	// vowel sign pre-based shift left
		$vstr = preg_replace('/([A-F0-9]{4}) '.$prebasedvowels.' '.$nukta.'/','\\2 \\1 '.$nukta, $vstr);	// before NUKTA
		$vstr = preg_replace('/([A-F0-9]{4}) '.$halant.' '.$prebasedvowels.'/','\\2 \\1 '.$halant, $vstr);	// before CHAR HALANT  ==  VIRAMA
	}

	// BENGALI vowels [09BF 09C7 09C8]
	else if ($lang=='bn') {

		// Khanda Ta 09CE not in font -> replace with 09A4|09CD
		$vstr = preg_replace('/09CE/','09A4 09CD 200D', $vstr);	// mPDF 5.3.09

		// BENGALI double-part vowels [09CB 09C7 09BE][09CC 09C7 09D7]
		$vstr = str_replace('09CB','09C7 09BE', $vstr);	// convert to 2 parts
		$vstr = str_replace('09CC','09C7 09D7', $vstr);	// 09C7 pre-based is then shifted below
		$prebasedvowels = "(09BF|09C7|09C8)";
		$nukta = "09BC";
		$halant = "09CD";
		// mPDF 5.0.044
		$bnfullcons = "0995|0996|0997|0998|0999|099A|099B|099C|099D|099F|09A0|09A1|09A2|09A3|09A4|09A5|09A6|09A7|09A8|09AA|09AB|09AC|09AD|09AE|09AF|09B0|09B2|09B6|09B7|09B8|09B9|09DC|09DD|09DF";
		$vstr = preg_replace('/([A-F0-9]{4}) '.$prebasedvowels.'/','\\2 \\1', $vstr);	// vowel sign pre-based shift left
		$vstr = preg_replace('/([A-F0-9]{4}) '.$prebasedvowels.' '.$nukta.'/','\\2 \\1 '.$nukta, $vstr);	// before NUKTA
		$vstr = preg_replace('/([A-F0-9]{4}) '.$halant.' '.$prebasedvowels.'/','\\2 \\1 '.$halant, $vstr);	// before CHAR HALANT
		// mPDF 5.0.044
		// .. and shifting left-based vowel further to the left in case 3 consonants together.
		$vstr = preg_replace('/('.$bnfullcons.') '.$halant.' '.$prebasedvowels.'/','\\2 \\1 '.$halant, $vstr);

		// mPDF 5.0.044
		// If left-based vowel has now been shifted to left of RA/Halant (09B0/09CD)
		// Convert here to above-line form (E068) as it would get missed later
		// e.g. 09B0 09CD 09AD 09C7 would be changed above =>
		// e.g. 09C7 09B0 09CD 09AD. The 09B0 09CD should => E068
		// ??? need to add 09BF as well (09BF|09C7|09C8)
		$vstr = preg_replace('/(09C7|09C8) 09B0 09CD/', '\\1 E068', $vstr);

	}

	// GUJARATI pre-based vowel [0ABF]
	else if ($lang=='gu') {
		$prebasedvowels = "(0ABF)";
		$nukta = "0ABC";
		$halant = "0ACD";
		$vstr = preg_replace('/([A-F0-9]{4}) '.$prebasedvowels.'/','\\2 \\1', $vstr);	// vowel sign pre-based shift left
		$vstr = preg_replace('/([A-F0-9]{4}) '.$prebasedvowels.' '.$nukta.'/','\\2 \\1 '.$nukta, $vstr);	// before NUKTA
		$vstr = preg_replace('/([A-F0-9]{4}) '.$halant.' '.$prebasedvowels.'/','\\2 \\1 '.$halant, $vstr);	// before CHAR HALANT
	}

	// GURMUKHI/PUNJABI pre-based vowel [0ABF]
	else if ($lang=='pa') {
		$prebasedvowels = "(0A3F)";
		$nukta = "0A3C";
		$halant = "0A4D";
		$vstr = preg_replace('/([A-F0-9]{4}) '.$prebasedvowels.'/','\\2 \\1', $vstr);	// vowel sign pre-based shift left
		$vstr = preg_replace('/([A-F0-9]{4}) '.$prebasedvowels.' '.$nukta.'/','\\2 \\1 '.$nukta, $vstr);	// before NUKTA
		$vstr = preg_replace('/([A-F0-9]{4}) '.$halant.' '.$prebasedvowels.'/','\\2 \\1 '.$halant, $vstr);	// before CHAR HALANT
	}

	// TAMIL pre-based vowel [0ABF]
	else if ($lang=='ta') {
		// Shrii (Shree)
		$vstr = preg_replace('/0BB6 0BCD 0BB0 0BC0/','E04B', $vstr);

		// TAMIL double-part vowels [0BCA 0BC6 0BBE][0BCB 0BC7 0BBE][0BCC 0BC6 0BD7]
		$vstr = preg_replace('/0BCA/','0BC6 0BBE', $vstr);	// convert to 2 parts
		$vstr = preg_replace('/0BCB/','0BC7 0BBE', $vstr);	// pre-based is then shifted below
		$vstr = preg_replace('/0BCC/','0BC6 0BD7', $vstr);
		$prebasedvowels = "(0BC6|0BC7|0BC8)";
		// No nukta
		$halant = "0BCD";	// Doesn't seem to move most in front of halanted consonants
		$vstr = preg_replace('/([A-F0-9]{4}) '.$prebasedvowels.'/','\\2 \\1', $vstr);	// vowel sign pre-based shift left
		// ? Only for special case KSS (already moved to left of 0BB7)
		$vstr = preg_replace('/0B95 '.$halant.' '.$prebasedvowels.' 0BB7/','\\1 0B95 '.$halant.' 0BB7', $vstr);
	}

	// ORIYA
	else if ($lang=='or') {
		// ORIYA double-part vowels []
		$vstr = str_replace('0B48','0B47 0B56', $vstr);	// 2-part Vowel
		$vstr = str_replace('0B4B','0B47 0B3E', $vstr);	// 2-part Vowel
		$vstr = str_replace('0B4C','0B47 0B57', $vstr);	// 2-part Vowel
		$orprebasedvowels = "(0B47)";
		// No nukta
		$halant = "0B4D";
		$vstr = preg_replace('/([A-F0-9]{4}) '.$orprebasedvowels.'/','\\2 \\1', $vstr);	// vowel sign pre-based shift left
		$vstr = preg_replace('/([A-F0-9]{4}) '.$halant.' '.$orprebasedvowels.'/','\\2 \\1 '.$halant, $vstr);	// before CHAR HALANT
		$vstr = preg_replace('/([A-F0-9]{4}) '.$halant.' '.$orprebasedvowels.'/','\\2 \\1 '.$halant, $vstr);	// before CHAR HALANT
	}

	// MALAYALAM
	else if ($lang=='ml') {
		// Chillus - old forms - remove ZWNJ after
		// This font Volt rules recognises e.g. "Na Halant(Virama)" as ChilluN
		$vstr = preg_replace('/(0D23 0D4D|0D28 0D4D|0D30 0D4D|0D32 0D4D|0D33 0D4D) 200D/','\\1', $vstr);
		// See Chillus in Unicode [http://en.wikipedia.org/wiki/Malayalam_script]
		$vstr = str_replace('0D7A','0D23 0D4D', $vstr);	// [mlymChilluNn]
		$vstr = str_replace('0D7B','0D28 0D4D', $vstr);	// [mlymChilluN]
		$vstr = str_replace('0D7C','0D30 0D4D', $vstr);	// [mlymChilluR]
		$vstr = str_replace('0D7D','0D32 0D4D', $vstr);	// [mlymChilluL]
		$vstr = str_replace('0D7E','0D33 0D4D', $vstr);	// [mlymChilluLl]
/*
		// Chillus - 0D7A-0D7E not in font directly, but as E005-E009
		$vstr = preg_replace('/0D23 0D4D 200D/','0D7A', $vstr);
		$vstr = preg_replace('/0D28 0D4D 200D/','0D7B', $vstr);
		$vstr = preg_replace('/0D30 0D4D 200D/','0D7C', $vstr);
		$vstr = preg_replace('/0D32 0D4D 200D/','0D7D', $vstr);
		$vstr = preg_replace('/0D33 0D4D 200D/','0D7E', $vstr);

		$vstr = preg_replace('/0D7F/','E004', $vstr);	// [mlymChilluK]
		$vstr = preg_replace('/0D7A/','E005', $vstr);	// [mlymChilluNn]
		$vstr = preg_replace('/0D7B/','E006', $vstr);	// [mlymChilluN]
		$vstr = preg_replace('/0D7C/','E007', $vstr);	// [mlymChilluR]
		$vstr = preg_replace('/0D7D/','E008', $vstr);	// [mlymChilluL]
		$vstr = preg_replace('/0D7E/','E009', $vstr);	// [mlymChilluLl]
*/

		// MALAYALAM double-part vowels []
		$vstr = str_replace('0D4A','0D46 0D3E', $vstr);	// 2-part Vowel
		$vstr = str_replace('0D4B','0D47 0D3E', $vstr);	// 2-part Vowel
		$vstr = str_replace('0D4C','0D46 0D57', $vstr);	// 2-part Vowel
		$mlprebasedvowels = "(0D46|0D47|0D48)";
		// No nukta
		$halant = "0D4D";
		$vstr = preg_replace('/([A-F0-9]{4}) '.$mlprebasedvowels.'/','\\2 \\1', $vstr);	// vowel sign pre-based shift left
		$vstr = preg_replace('/([A-F0-9]{4}) '.$halant.' '.$mlprebasedvowels.'/','\\2 \\1 '.$halant, $vstr);	// before CHAR HALANT
	}

	// TELUGU
	else if ($lang=='te') {
		// TELUGU double-part vowels [0C48 -> 0C46 0C56]
		$vstr = str_replace('0C48','0C46 0C56', $vstr);	// 2-part Vowel
		$prebasedvowels = "(0C46)";
		$abvvowels = "(0C3E|0C3F|0C40|0C46|0C47|0C4A|0C4B|0C4C|0C55)";
		// No nukta
		$halant = "0C4D";
		$tefullforms = "0C15|0C17|0C18|0C1A|0C1B|0C1C|0C1D|0C20|0C21|0C22|0C24|0C25|0C26|0C27|0C28|0C2A|0C2B|0C2D|0C2E|0C2F|0C30|0C33|0C35|0C36|0C37|0C38|0C39|E028|E029|E02A|E02B|E078|E07A|E07B";
		$vstr = preg_replace('/('.$tefullforms .') '.$halant.' ('.$tefullforms .') '.$abvvowels .'/','\\1 \\3 '.$halant.' \\2', $vstr);	// before HALANT
	}


	// KANNADA
	else if ($lang=='kn') {
		// KANNADA double-part vowels [0CC8 -> 0CC6 0CD6]
		$vstr = str_replace('0CC0','0CBF 0CD5', $vstr);	// 2-part Vowel
		$vstr = str_replace('0CC7','0CC6 0CD5', $vstr);	// 2-part Vowel
		$vstr = str_replace('0CC8','0CC6 0CD6', $vstr);	// 2-part Vowel AI - no glyph for single
		$vstr = str_replace('0CCA','0CC6 0CC2', $vstr);	// 2-part Vowel
		$vstr = str_replace('0CCB','0CC6 0CC2 0CD5', $vstr);	// 2-part Vowel
		$prebasedvowels = "(0CBF|0CC6)";
		$halant = "0CCD";
	}


	//============================

	// SPECIALS

	// DEVANAGARI Ra Halant Ra
	if ($lang=='hi') {
		$vstr = str_replace('0930 094D 0930','E05D 0930', $vstr);	// Ra Halant Ra => halfRa FullRa
	}

	// GUJARATI
	if ($lang=='gu') {
		$vstr = str_replace('0AB0 0AC2','E02E', $vstr);	// Ra VowelUu => SpecialForm RaUu
	}

	// TELUGU Ra Halant <Consonant> Halant => halfRa Halant<Consonant> Halant
	if ($lang=='te') {
		$vstr = preg_replace('/0C30 0C4D ([A-F0-9]{4}) 0C4D/','E021 0C4D \\1 0C4D', $vstr);
	}

	// KANNADA
	// Reph at end of word becomes E0CC instead of E00B
	if ($lang=='kn') {
		$vstr = str_replace('0CB0 0CCD 0020','E0CC 0020', $vstr);	// mPDF 5.3.87
	}


	//============================
	// MAIN BIT FROM VOLT RULES
	foreach($voltdata[$font] AS $rid=>$reps) {
//echo $rid . ':  ' . $vstr.'<br />';
		$vstr = preg_replace('/'.$reps['match'].'/',$reps['replace'], $vstr);
	}
//echo $vstr.'<br />'; exit;


	//============================

	// SPECIALS

	// KANNADA
	// <Base> <BelowBase1> [<BelowBase2> ] MatraI -> <Base/MatraI ligature> <Belowbase1> etc
	if ($lang=='kn') {
		$matraI = "0CBF";
		$knbase = preg_split('/\|/', "0C95|0C96|0C97|0C98|0C9A|0C9B|0C9C|0C9D|0CA0|0CA1|0CA2|0CA3|0CA4|0CA5|0CA6|0CA7|0CA8|0CAA|0CAB|0CAC|0CAD|0CAE|0CAF|0CB0|0CB2|0CB3|0CB5|0CB6|0CB7|0CB8|0CB9|E0A3|E07D|E07E");
		$knmatraIligature = preg_split('/\|/', "E082|E083|E084|E085|E086|E087|E088|E089|E08A|E08B|E08C|E08D|E08E|E08F|E090|E091|E092|E093|E094|E095|E096|E097|E098|E099|E09A|E09B|E09C|E09D|E09E|E09F|E0A0|E0A4|E0A1|E0A2");
		$belowbase1 = "E02E|E02F|E030|E031|E032|E033|E034|E035|E036|E037|E038|E039|E03A|E03B|E03C|E03D|E03E|E03F|E040|E041|E042|E043|E044|E045|E046|E047|E048|E049|E04A|E04B|E04C|E04D|E04E|E04F|E050|E081";
		$belowbase2 = "E052|E053|E054|E055|E056|E057|E058|E059|E05A|E05B|E05C|E05D|E05E|E05F|E060|E061|E062|E063|E064|E065|E066|E067|E068|E069|E06A|E06B|E06C|E06D|E06E|E06F|E070|E071|E072|E073|E074|E081";
		for ($i=0; $i<count($knbase);$i++) {
			$vstr = preg_replace('/'.$knbase[$i].' ('.$belowbase1.') ('.$belowbase2.') '.$matraI.'/', $knmatraIligature[$i].' \\1 \\2', $vstr);
			$vstr = preg_replace('/'.$knbase[$i].' ('.$belowbase1.') '.$matraI.'/', $knmatraIligature[$i].' \\1', $vstr);
		}
	}

	// KANNADA
	// [KanTtaFull] [matraI] => [KanTtaPartial] [matraI]
	if ($lang=='kn') {
		$vstr = preg_replace('/0C9F '.$matraI.'/', 'E015 '.$matraI, $vstr);
	}

	// ORIYA
	if ($lang=='or') {
		// SpecialCase Ra[0B30] Halant still left before [oryaFullNnNna] => E00F
		$vstr = preg_replace('/0B30 '.$halant.' E00F/','E00F E069', $vstr);	// convert to Reph
	}

	//============================
	// SHIFT REPH

	// DEVANAGARI Shift Reph [E015]
	if ($lang=='hi') {
		// FIRSTLY - halfRa = E05D - Change this to Reph [E015]
		$himatchhalfforms = "E043|E044|E045|E046|E047|E048|E049|E04A|E04B|E04C|E04D|E04E|E04F|E050|E051|E052|E053|E054|E055|E056|E057|E058|E059|E05A|E05B|E05C|E05D|E05E|E05F|E060|E061|E062|E063|E064|E065|E066|E067|E068|E069|E06A|E06B|E06C|E06D|E06E|E06F|E070|E071|E072|E073|E074|E075|E076|E077|E078|E079|E07A|E07B|E07C|E07D|E07E|E07F|E080|E081|E082|E083|E084|E085|E086|E087|E088|E089|E08A|E0D3|E0D4|E0D5|E0D6|E0D7|E0D8|E0D9|E0DA|E0DB|E0DC|E0DD|E0DE|E0DF|E0E0|E0E1|E0E2|E0E3|E0E4|E0E5|E0E6|E0E7|E0E8|E0E9|E0EA|E0EB|E0EC|E0ED|E0EE|E0EF|E0F0|E0F1|E0F2|E0F3|E0F4|E0F5|E0F6|E0F7|E0F8|E0F9|E0FA|E0FB|E0FC|E0FD|E0FE|E0FF|E100|E101|E102|E103|E104|E105|E106|E107|E108|E109|E10A|E10B|E10C|E10D|E10E|E10F|E110|E111|E112|E113|E114|E115|E116|E117|E118|E119|E11A|E13D|E13E|E13F|E140|E141|E142|E143|E144|E145";
		$himatchfullforms = "0915|0916|0917|0918|0919|091A|091B|091C|091D|091E|091F|0920|0921|0922|0923|0924|0925|0926|0927|0928|092A|092B|092C|092D|092E|092F|0930|0932|0933|0935|0936|0937|0938|0939|E028|E029|0958|0959|095A|E02A|E02B|E02C|E02D|095B|E02E|E02F|E030|E031|095C|095D|E032|E033|E034|E035|E036|0929|E037|095E|E038|E039|E03A|095F|0931|E03B|0934|E03C|E03D|E03E|E03F|E040|E041|E042|E08B|E08C|E08D|E08E|E08F|E090|E091|E092|E093|E094|E095|E096|E097|E098|E099|E09A|E09B|E09C|E09D|E09E|E09F|E0A0|E0A1|E0A2|E0A3|E0A4|E0A5|E0A6|E0A7|E0A8|E0A9|E0AA|E0AB|E0AC|E0AD|E0AE|E0AF|E0B0|E0B1|E0B2|E0B3|E0B4|E0B5|E0B6|E0B7|E0B8|E0B9|E0BA|E0BB|E0BC|E0BD|E0BE|E0BF|E0C0|E0C1|E0C2|E0C3|E0C4|E0C5|E0C6|E0C7|E0C8|E0C9|E0CA|E0CB|E0CC|E0CD|E0CE|E0CF|E0D0|E0D1|E0D2|E11E|E11F|E120|E121|E122|E123|E124|E125|E126|E127|E128|E129|E12A|E12B|E12C|E12D|E12E|E12F|E130|E131|E132|E133";
		$vstr = preg_replace('/E05D ('.$himatchhalfforms.'|'.$himatchfullforms.')/', 'E015 \\1', $vstr);

		// Reph = E015 - Shift Right to just after end of syllable
		// FullAllForms + HalfAllForms + 093E matraA
		while(preg_match('/E015 ('.$himatchhalfforms.')/', $vstr)) {
			$vstr = preg_replace('/E015 ('.$himatchhalfforms.')/', '\\1 E015', $vstr);
		}
		$vstr = preg_replace('/E015 ('.$himatchfullforms.')/', '\\1 E015', $vstr);

		// Now shift it beyond post-based vowels  // ??? Need to add others e.g. 0949,094A,094B,094C + presentation forms like E198
		$vstr = str_replace('E015 093E', '093E E015', $vstr);
		$vstr = preg_replace('/E015 (0940|E194|E195|E196|E197|E198)/', '\\1 E014', $vstr);	// (Small) reph [E014] to Right of matraI
		$vstr = str_replace('E015 0947', '0947 E014', $vstr);	// (Small) reph [E014] to Right of matraI
	}

	// BENGALI Shift Reph [E068]
	else if ($lang=='bn') {
		$bnfullconjuncts = "E002|E003|E004|E041|E042|E043|E044|E045|E046|E047|E048|E049|E04A|E04B|E04C|E04D|E04E|E04F|E050|E051|E052|E053|E054|E055|E056|E057|E058|E059|E05A|E05B|E05C|E05D|E05E|E05F|E060|E061|E062|E063|E064|E065|E06A|E06B|E06C|E06D|E06E|E06F|E070|E071|E072|E073|E074|E075|E076|E077|E078|E079|E07A|E07B|E07C|E07D|E07E|E07F|E080|E081|E082|E083|E084|E085|E086|E087|E088|E089|E08A|E08B|E08C|E08D|E08E|E08F|E090|E091|E092|E093|E094|E095|E096|E097|E098|E099|E09A|E09B|E09C|E09D|E09E|E09F|E0A0|E0A1|E0A2|E0A3|E0A4|E0A5|E0A6|E0A7|E0A8|E0A9|E0AA|E0AB|E0AC|E0AD|E0AE|E0AF|E0B0|E0B1|E0B2|E0B3|E0B4|E0B5|E0B6|E0B7|E0B8|E0B9|E0BA|E0BB|E0BC|E0BD|E0BE|E0BF|E0C0|E0C1|E0C2|E0C3|E0C4|E0C5|E0C6|E0C7|E0C8|E0C9|E0CA|E0CB|E0CC|E0CD|E0CE|E0CF|E0D0|E0D1|E0D2|E0D3|E0D4|E0D5|E0D6|E0D7|E0D8|E0D9|E0DA|E0DB|E0DC|E0DD|E0DE|E0DF|E0E0|E0E1|E0E2|E0E3|E0E4|E0E5|E0E6|E0E7|E0E8|E0E9|E0EA|E0EB|E0EC|E0ED|E0EE|E0EF|E0F0|E0F1|E0F2|E0F3|E0F4|E0F5|E0F6|E0F7|E0F8|E0F9|E0FA|E0FB|E0FC|E0FD|E0FE|E0FF|E100|E101|E102|E103|E104|E105|E106|E107|E108|E109|E10A|E10B|E10C|E10D|E10E|E10F|E110|E111|E112|E113|E114|E115|E116|E117|E118|E119|E11A|E11B|E11C|E11D|E11E|E11F|E120|E121|E122|E123|E124|E125|E126|E127|E128|E129|E12A|E12B|E12C|E12D|E12E|E12F|E130|E131|E132|E133|E134|E135|E136|E137|E138|E139|E13A|E13B|E13C|E13D|E13E|E13F|E140|E141|E142|E143|E144|E145|E146|E147|E148|E149|E14A|E14B|E14C|E14D|E14E|E14F|E150|E151|E152|E153|E154|E155|E156|E157|E158|E159|E15A|E15B|E15C|E15D|E15E|E15F|E160|E161|E162|E163|E164|E165|E166|E167|E168|E169|E16A|E16B|E16C|E16D|E16E|E16F|E170|E171|E172|E173|E174|E175|E176|E177|E178|E179|E17A|E17B|E17C|E17D|E17E|E17F|E180|E181|E182|E183|E184|E185|E186|E187|E188|E189|E18A|E18B|E18C|E18D|E18E|E18F|E190|E191|E192|E193|E194|E195|E196|E197|E198|E199|E19A";
		// $bnfullcons - set above;
		$vstr = preg_replace('/E068 ('.$bnfullconjuncts.'|'.$bnfullcons.')/', '\\1 E068', $vstr);
		// ? Need to shift it beyond post-base vowels 09BE, 09C0, 09D7  haven't found so can't test??
		$vstr = preg_replace('/E068 (09BE|09C0|09D7)/', '\\1 E068', $vstr);
	}

	// GUJARATI Shift Reph [E032]
	else if ($lang=='gu') {
		$gufullforms = "0A95|0A96|0A97|0A98|0A99|0A9A|0A9B|0A9C|0A9D|0A9E|0A9F|0AA0|0AA1|0AA2|0AA3|0AA4|0AA5|0AA6|0AA7|0AA8|0AAA|0AAB|0AAC|0AAD|0AAE|0AAF|0AB0|0AB2|0AB3|0AB5|0AB6|0AB7|0AB8|0AB9|E002|E003|E004|E005|E006|E007|E008|E009|E00A|E00B|E00C|E00D|E00E|E00F|E010|E011|E012|E013|E014|E015|E016|E017|E018|E019|E01A|E01B|E01C|E01D|E01E|E01F|E020|E021|E022|E023|E024|E025|E026|E027|E05E|E05F|E060|E061|E062|E063|E064|E065|E066|E067|E068|E069|E06A|E06B|E06C|E06D|E06E|E06F|E070|E071|E072|E073|E074|E075|E076|E077|E078|E079|E07A|E07B|E07C|E07D|E07E|E07F|E080|E081|E082|E083|E084|E085|E086|E087|E088|E089|E08A|E08B|E08C|E08D|E08E|E08F|E090|E091|E092|E093|E094|E095|E096|E097|E098|E099|E09A|E09B|E09C|E09D|E09E|E09F|E0A0|E0A1|E0A2|E0A3|E0A4|E0A5";
		$vstr = preg_replace('/E032 ('.$gufullforms.')/', '\\1 E032', $vstr);
		// Now shift it beyond post-based vowels  // ??? Need to add others e.g. 0949,094A,094B,094C + presentation forms like E198
		// ? Need to shift it beyond post-base vowels 0ABE, 0AC0 haven't found so can't test??
		$vstr = preg_replace('/E032 (0ABE|0AC0)/', '\\1 E032', $vstr);
	}


	// TELUGU Shift Reph to LEFT [E046|E069|E077]    [TelRaSmallOne] => E046    [TelRaSmallTwo] => E069    [TelRaSmallThree] => E077
	else if ($lang=='te') {
		// tefullforms defined earlier
		$tepartialforms = "E00D|E00E|E00F|E010|E011|E012|E013|E014|E015|E016|E017|E018|E019|E01A|E01B|E01C|E01D|E01E|E01F|E020|E021|E022|E023|E024|E025|E026|E027|E07C|E07D|E07E";
		$matraligs = "E07F|E080|E081|E082|E083|E084|E085|E086|E087|E088|E089|E08A|E08B|E08C|E08D|E08E|E08F|E090|E091|E092|E093|E094|E095|E096|E097|E098|E099|E09A|E09B|E09C|E09D|E09E|E09F|E0A0|E0A1|E0A2|E0A3|E0A4|E0A5|E0A6|E0A7|E0A8|E0A9|E0AA|E0AB|E0AC|E0AD|E0AE|E0AF";
		$tevowels = "0C3E|0C3F|0C40|0C46|0C47|0C56|0C4A|0C4B|0C4C"
		."|0C41|0C42|0C43|0C44";		// post matras
		$vstr = preg_replace('/('.$tevowels.') (E046|E069|E077)/', '\\2 \\1', $vstr);
		while(preg_match('/('.$tepartialforms.') (E046|E069|E077)/', $vstr)) {
			$vstr = preg_replace('/('.$tepartialforms.') (E046|E069|E077)/', '\\2 \\1', $vstr);
		}
		$vstr = preg_replace('/('.$tefullforms .'|'.$matraligs.') (E046|E069|E077)/', '\\2 \\1', $vstr);
	}


	// KANNADA Shift Reph to  RIGHT [E00B]
	else if ($lang=='kn') {
		$knfullforms = "0C95|0C96|0C97|0C98|0C99|0C9A|0C9B|0C9C|0C9D|0C9E|0C9F|0CA0|0CA1|0CA2|0CA3|0CA4|0CA5|0CA6|0CA7|0CA8|0CAA|0CAB|0CAC|0CAD|0CAE|0CAF|0CB0|0CB1|0CB2|0CB3|0CB5|0CB6|0CB7|0CB8|0CB9|E07D|E07E|E0A3";
		$knpartialforms = "E00C|E00D|E00E|E00F|E010|E011|E012|E013|E014|0C9E|E015|E016|E017|E018|E019|E01A|E01B|E01C|E01D|E01E|E01F|E020|E021|E022|E023|E024|E025|E026|E027|E028|E029|E02A|E02B|E02C|E02D|E07F";
		while(preg_match('/E00B ('.$knpartialforms.')/', $vstr)) {
			$vstr = preg_replace('/E00B ('.$knpartialforms.')/', '\\1 E00B', $vstr);
		}
		// mPDF 5.3.47  Also move Reph to right of matraIligatures
		$knfullforms .= "|E082|E083|E084|E085|E086|E087|E088|E089|E08A|E08B|E08C|E08D|E08E|E08F|E090|E091|E092|E093|E094|E095|E096|E097|E098|E099|E09A|E09B|E09C|E09D|E09E|E09F|E0A0|E0A4|E0A1|E0A2";
		$vstr = preg_replace('/E00B ('.$knfullforms.')/', '\\1 E00B', $vstr);

		// ? Need to shift it beyond base or below-base forms - haven't found so can't test??
		// mPDF 5.3.87
		// E004 added to list (which is a transformed version of 0CBE)
		$knvowels = "0CBE|0CC0|0CC1|0CC2|0CC3|0CC4|0CC7|0CC8|0CCA|0CCB|0CD5|0CD6|E004";
		$vstr = preg_replace('/E00B ('.$knvowels.')/', '\\1 E00B', $vstr);
	}


	// ORIYA Shift Reph to  RIGHT [E069|E06A|E06B|E06C]
	else if ($lang=='or') {
		$orrephs = "E069|E06A|E06B|E06C";
		$orfullforms = "0B15|0B16|0B17|0B18|0B19|0B1A|0B1B|0B1C|0B1D|0B1E|0B1F|0B20|0B21|0B22|0B23|0B24|0B25|0B26|0B27|0B28|0B29|0B2A|0B2B|0B2C|0B2D|0B2E|0B2F|0B30|0B31|0B32|0B33|0B34|0B35|0B36|0B37|0B38|E003|E004|E005|E006|E007|E008|E009|E00A|E00B|E00C|E00D|E00E|E00F|E010|E011|E012|E013|E014|E015|E016|E017|E018|E019|E01A|E01B|E01C|E01D|E01E|E01F|E020|E021|E022|E023|E024|E025|E026|E027|E028|E029|E02A|E02B|E02C|E02D|E02E|E02F|E030|E031|E032|E033|E034|E035|E036|E037";
		// E123 - E147  FullHalant forms ? add to FullForms
		$orpartialforms = "E090|E091|E092|E093|E094|E095|E096|E097|E098|E099|E09A|E09B|E09C|E09D|E09E|E09F|E0A0|E0A1|E0A2|E0A3|E0A4|E0A5|E0A6|E0A7|E0A8|E0A9|E0AA|E0AB|E0AC|E0AD|E0AE|E0AF|E0B0|E0B1|E0B2|E0B3|E0B4|E0B5|E0B6|E0B7|E0B8|E0B9|E0BA|E0BB|E0BC|E0BD|E0BE|E0BF|E0C0|E0C1|E0C2|E0C3|E0C4|E0C5|E0C6|E0C7|E0C8|E0C9|E0CA|E0CB|E0CC|E0CD|E0CE|E0CF|E0D0|E0D1|E0D2|E0D3|E0D4|E0D5|E0D6|E0D7|E0D8|E0D9|E0DA|E0DB|E0DC|E0DD|E0DE|E0DF|E0E0|E0E1|E0E2|E0E3|E0E4|E0E5|E0E6|E0E7|E0E8|E0E9|E0EA|E0EB|E0EC|E0ED|E0EE|E0EF|E0F0|E0F1|E0F2|E0F3|E0F4|E0F5";

		// Combined MatraIReph[E06D] split [0B3F & E069] to allow reph to be shifted forwards
		$vstr = preg_replace('/('.$orfullforms.') E06D ('.$orfullforms.') 0B3E/', '\\1 0B3F E069 \\2 0B3E', $vstr);


		while(preg_match('/('.$orrephs.') ('.$orpartialforms.')/', $vstr)) {
			$vstr = preg_replace('/('.$orrephs.') ('.$orpartialforms.')/', '\\2 \\1', $vstr);
		}
		$vstr = preg_replace('/('.$orrephs.') ('.$orfullforms.')/', '\\2 \\1', $vstr);


		// Combine Reph and MatraI
		$vstr = str_replace('E069 0B3F', 'E06D', $vstr);	// Reph and MatraI -> MatraIReph
		$vstr = str_replace('E06A 0B3F', 'E06E', $vstr);	// Reph and MatraI -> MatraIReph
		$vstr = str_replace('E06B 0B3F', 'E06F', $vstr);	// Reph and MatraI -> MatraIReph
	}


	// MALAYALAM Shift Reph to LEFT [E00E] (mlylmRaVattu)
	else if ($lang=='ml') {
		$halant = "0D4D";
		$vstr = preg_replace('/([A-F0-9]{4}) '.$halant.' 0D30/','E00E \\1', $vstr);	// 0D30 = Ra
		$vstr = preg_replace('/([A-F0-9]{4}) '.$halant.' '.$mlprebasedvowels .' 0D30/','\\2 E00E \\1', $vstr);	// 0D30 = Ra

		$mlfullforms = "0D15|0D16|0D17|0D18|0D19|0D1A|0D1B|0D1C|0D1D|0D1E|0D1F|0D20|0D21|0D22|0D23|0D24|0D25|0D26|0D27|0D28|0D2A|0D2B|0D2C|0D2D|0D2E|0D2F|0D30|0D31|0D32|0D33|0D34|0D35|0D36|0D37|0D38|0D39"
		."|E010|E011|E012|E013|E014|E015|E016|E017|E018|E019|E01A|E01B|E01C|E01D|E01E|E01F|E020|E021|E022|E023|E024|E025|E026|E027|E028|E029|E02A|E02B|E02C|E02D|E02E|E02F|E030|E031|E032|E033|E034|E035|E036|E037|E038|E039|E03A|E03B|E03C|E03D|E03E|E03F|E040|E041|E042|E043|E044|E045|E046|E047|E048|E049|E04A|E04B|E04C|E04D|E04E|E04F|E050|E051|E052|E053|E054|E055|E056|E057|E058|E059|E05A|E05B|E05C|E05D|E05E|E05F|E060|E061|E062|E063|E064|E065|E066|E067|E068|E069|E06A|E06B|E06C|E06D|E06E|E06F|E070|E071|E072|E073|E074|E075|E076|E077|E078|E079|E07A|E07B|E07C|E07D";
		// = FullConsonants + FullConjuncts

		// = Add Chillu characters	// mPDF 5.0.024
		$mlfullforms .= "|E004|E005|E006|E007|E008|E009";
		while(preg_match('/('.$mlfullforms.') E00E/', $vstr))
			$vstr = preg_replace('/('.$mlfullforms.') E00E/', 'E00E \\1', $vstr);
	}

	//============================

	// SHIFT post-based vowels to Left of SmallForms (NOT to left of full forms)

	// TELUGU Shift
	if ($lang=='te') {
		// NB $tevowels defined above
		// NB $tefullforms defined above
		$tebelowbase1 = "E02C|E02D|E02E|E02F|E030|E031|E032|E033|E034|E035|E036|E037|E038|E039|E03A|E03B|E03C|E03D|E03E|E03F|E040|E041|E042|E043|E044|E045|E046|E047|E048|E049|E04A|E04B|E04C|E04D|E04E";		//'Small1KaToHa'
		$tebelowbase2 = "E04F|E050|E051|E052|E053|E054|E055|E056|E057|E058|E059|E05A|E05B|E05C|E05D|E05E|E05F|E060|E061|E062|E063|E064|E065|E066|E067|E068|E069|E06A|E06B|E06C|E06D|E06E|E06F|E070|E071";	// 'Small2KaToHa'
		$vstr = preg_replace('/('.$tebelowbase2.') ('.$tevowels.')/', '\\2 \\1', $vstr);
		$vstr = preg_replace('/('.$tebelowbase1.') ('.$tevowels.')/', '\\2 \\1', $vstr);
	}


	// KANNADA Shift
	else if ($lang=='kn') {
		$knvowels = "0CBE|0CC0|0CC1|0CC2|0CC3|0CC4|0CC7|0CC8|0CCA|0CCB|0CD5|0CD6"
	// mPDF 5.3.87  Shouldn't swop E082 and E047 (belowbase1) below
	// E082 is a matraIligature
	//	."|E082|E083|E084|E085|E086|E087|E088|E089|E08A|E08B|E08C|E08D|E08E|E08F|E090|E091|E092|E093|E094|E095|E096|E097|E098|E099|E09A|E09B|E09C|E09D|E09E|E09F|E0A0|E0A1|E0A2|E0A3|E0A4|E0A5|E0A6|E0A7|E0A8|E0A9|E0AA|E0AB"
		."|E004|E007|E008|E009|E00A";


		// NB $knvowels defined above
		// NB $fullforms defined above
		// $belowbase1/2 defined above
		$vstr = preg_replace('/('.$belowbase2.') ('.$knvowels.')/', '\\2 \\1', $vstr);
		// mPDF 5.3.87
		$vstr = preg_replace('/('.$belowbase1.') ('.$knvowels.')/', '\\2 \\1', $vstr);

		//$vstr = preg_replace('/('.$fullforms.') ('.$knvowels.')/', '\\2 \\1', $vstr);
	}

	//============================
	// Clear unwanted ZWJ, ZWNJ
	// MALAYALAM
	if ($lang=='ml') {
		$vstr = preg_replace('/(200C|200D) /','', $vstr);
	}

	//============================
	// END & PUT IT BACK TOGETHER
	$vstr = preg_replace('/^0020 (.*) 0020$/', '\\1', $vstr);

	$varr = explode(" ",$vstr);
	$e = '';
	foreach($varr AS $v) {
		$e.=code2utf(hexdec($v));
	}
	//============================

	return $e;
}


}

?>