<?php

/*
mPDF recognises IETF language tags as:
- a single primary language subtag composed of a two letter language code from ISO 639-1 (2002), or a three letter code from ISO 639-2 (1998), ISO 639-3 (2007) or ISO 639-5 (2008) (usually written in lower case);
- an optional script subtag, composed of a four letter script code from ISO 15924 (usually written in title case);
- an optional region subtag composed of a two letter country code from ISO 3166-1 alpha-2 (usually written in upper case), or a three digit code from UN M.49 for geographical regions;
Subtags are not case sensitive, but the specification recommends using the same case as in the Language Subtag Registry, where region subtags are uppercase, script subtags are titlecase and all other subtags are lowercase. 

Region subtags are often deprecated by the registration of specific primary language subtags from ISO 639-3 which are now "preferred values". For example, "ar-DZ" is deprecated with the preferred value "arq" for Algerian Spoken Arabic;

Example: Serbian written in the Cyrillic (sr-Cyrl) or Latin (sr-Latn) script

und (for undetermined or undefined) is used in situations in which a script must be indicated but the language cannot be identified.
e.g. und-Cyrl is an undefined language written in Cyrillic script.
*/

function GetLangOpts($llcc, $adobeCJK, &$fontdata) {
	$tags = preg_split('/-/',$llcc);
	$lang = strtolower($tags[0]);
	$country = '';
	$script = '';
	if (isset($tags[1]) && $tags[1]) { 
		if (strlen($tags[1]) == 4) { $script = strtolower($tags[1]); }
		else { $country = strtolower($tags[1]); }
	}
	if (isset($tags[2]) && $tags[2]) { $country = strtolower($tags[2]); }

	$unifont = "";
	$coreSuitable = false;

	switch($lang){




/* European */
	CASE "en":  CASE "eng":	// English		// LATIN
	CASE "eu":  CASE "eus":	// Basque
	CASE "br":  CASE "bre":	// Breton
	CASE "ca":  CASE "cat":	// Catalan 
	CASE "co":  CASE "cos":	// Corsican
	CASE "kw":  CASE "cor":	// Cornish
	CASE "cy":  CASE "cym":	// Welsh
	CASE "cs":  CASE "ces":	// Czech
	CASE "da":  CASE "dan":	// Danish
	CASE "nl":  CASE "nld":	// Dutch
	CASE "et":  CASE "est":	// Estonian
	CASE "fo":  CASE "fao":	// Faroese
	CASE "fi":  CASE "fin":	// Finnish
	CASE "fr":  CASE "fra":	// French
	CASE "gl":  CASE "glg":	// Galician
	CASE "de":  CASE "deu":	// German
	CASE "ht":  CASE "hat":	// Haitian; Haitian Creole
	CASE "hu":  CASE "hun":	// Hungarian
	CASE "ga":  CASE "gle":	// Irish
	CASE "is":  CASE "isl":	// Icelandic
	CASE "it":  CASE "ita":	// Italian
	CASE "la":  CASE "lat":	// Latin
	CASE "lb":  CASE "ltz":	// Luxembourgish
	CASE "li":  CASE "lim":	// Limburgish
	CASE "lt":  CASE "lit":	// Lithuanian
	CASE "lv":  CASE "lav":	// Latvian
	CASE "gv":  CASE "glv":	// Manx
	CASE "no":  CASE "nor":	// Norwegian
	CASE "nn":  CASE "nno":	// Norwegian Nynorsk
	CASE "nb":  CASE "nob":	// Norwegian Bokmål
	CASE "pl":  CASE "pol":	// Polish
	CASE "pt":  CASE "por":	// Portuguese
	CASE "ro":  CASE "ron":	// Romanian
	CASE "gd":  CASE "gla":	// Scottish Gaelic 
	CASE "es":  CASE "spa":	// Spanish
	CASE "sv":  CASE "swe":	// Swedish
	CASE "sl":  CASE "slv":	// Slovene
	CASE "sk":  CASE "slk":	// Slovak
		$unifont = "dejavusanscondensed";
		// Edit this value to define how mPDF behaves when using new mPDF('-x')
		// If set to TRUE, mPDF will use Adobe core fonts only when it recognises the languages above
		$coreSuitable = true;  
		break;


	CASE "ru":  CASE "rus":	// Russian	// CYRILLIC
	CASE "ab":  CASE "abk":	// Abkhaz
	CASE "av":  CASE "ava":	// Avaric
	CASE "ba":  CASE "bak":	// Bashkir
	CASE "be":  CASE "bel":	// Belarusian
	CASE "bg":  CASE "bul":	// Bulgarian
	CASE "ce":  CASE "che":	// Chechen
	CASE "cv":  CASE "chv":	// Chuvash
	CASE "kk":  CASE "kaz":	// Kazakh
	CASE "kv":  CASE "kom":	// Komi
	CASE "ky":  CASE "kir":	// Kyrgyz
	CASE "mk":  CASE "mkd":	// Macedonian
	CASE "cu":  CASE "chu":	// Old Church Slavonic
	CASE "os":  CASE "oss":	// Ossetian
	CASE "sr":  CASE "srp":	// Serbian
	CASE "tg":  CASE "tgk":	// Tajik
	CASE "tt":  CASE "tat":	// Tatar
	CASE "tk":  CASE "tuk":	// Turkmen
	CASE "uk":  CASE "ukr":	// Ukrainian
		$unifont = "dejavusanscondensed";	/* freeserif best coverage for supplements etc. */
		break;


	CASE "hy":  CASE "hye":	// ARMENIAN
		$unifont = "dejavusans";
		break;
	CASE "ka":  CASE "kat":	// GEORGIAN
		$unifont = "dejavusans";
		break;

	CASE "el":  CASE "ell":	// GREEK
		$unifont = "dejavusanscondensed";
		break;
	CASE "cop":		// COPTIC
		$unifont = "quivira";
		break;

	CASE "got":		// GOTHIC
		$unifont = "freeserif";
		break;




/* African */
	CASE "nqo":		// NKO
		$unifont = "dejavusans";
		break;
	//CASE "bax":	// BAMUM
	//CASE "ha":  CASE "hau":	// Hausa
	CASE "vai":		// VAI
		$unifont = "freesans";
		break;
	CASE "am":  CASE "amh":	// Amharic ETHIOPIC
	CASE "ti":  CASE "tir":	// Tigrinya ETHIOPIC
		$unifont = "abyssinicasil";
		break;



/* Middle Eastern */
	CASE "ar":  CASE "ara":	// Arabic	NB Arabic text identified by Autofont will be marked as und-Arab
		$unifont = "xbriyaz";
		break;
	CASE "fa":  CASE "fas":	// Persian (Farsi)
		$unifont = "xbriyaz";  
		break;
	CASE "ps":  CASE "pus":	// Pashto
		$unifont = "xbriyaz"; 
		break;
	CASE "ku":  CASE "kur":	// Kurdish
		$unifont = "xbriyaz"; 
		break;
	CASE "ur":  CASE "urd":	// Urdu
		$unifont = "xbriyaz"; 
		break;
	CASE "he":  CASE "heb":	// HEBREW
	CASE "yi":  CASE "yid":	// Yiddish
		$unifont = "taameydavidclm";	// dejavusans,dejavusanscondensed,freeserif are fine if you do not need cantillation marks
		break;


	CASE "syr":		// SYRIAC
		$unifont = "estrangeloedessa";
		break;


	//CASE "arc":	// IMPERIAL_ARAMAIC
	//CASE ""ae:	// AVESTAN
	CASE "xcr":		// CARIAN
		$unifont = "aegean";
		break;
	CASE "xlc":		// LYCIAN
		$unifont = "aegean";
		break;
	CASE "xld":		// LYDIAN
		$unifont = "aegean";
		break;
	//CASE "mid":	// MANDAIC
	//CASE "peo":	// OLD_PERSIAN
	CASE "phn":		// PHOENICIAN
		$unifont = "aegean";
		break;
	//CASE "smp":	// SAMARITAN
	CASE "uga":		// UGARITIC
		$unifont = "aegean";
		break;


/* Central Asian */
	CASE "bo":  CASE "bod":	// TIBETAN
	CASE "dz":  CASE "dzo":	// Dzongkha
		$unifont = "jomolhari";
		break;
	//CASE "mn":  CASE "mon":	// MONGOLIAN	(Vertical script)


	//CASE "ug":  CASE "uig":	// Uyghur
	//CASE "uz":  CASE "uzb":	// Uzbek
	//CASE "az":  CASE "azb":	// South Azerbaijani


/* South Asian */
	CASE "as":  CASE "asm":	// Assamese
		$unifont = "freeserif";
		break;
	CASE "bn":  CASE "ben":	// BENGALI; Bangla
		$unifont = "freeserif";
		break;
	CASE "ks":  CASE "kas":	// Kashmiri
		$unifont = "freeserif";
		break;
	CASE "hi":  CASE "hin":	// Hindi	DEVANAGARI
	CASE "bh":  CASE "bih":	// Bihari (Bhojpuri, Magahi, and Maithili)
	CASE "sa":  CASE "san":	// Sanskrit
		$unifont = "freeserif";
		break;
	CASE "gu":  CASE "guj":	// Gujarati
		$unifont = "lohitgujarati";
		break;
	CASE "pa":  CASE "pan":	// Panjabi, Punjabi GURMUKHI
		$unifont = "freeserif";
		break;
	CASE "kn":  CASE "kan":	// Kannada
		$unifont = "lohitkannada";
		break;
	CASE "mr":  CASE "mar":	// Marathi
		$unifont = "freeserif";
		break;
	CASE "ml":  CASE "mal":	// MALAYALAM
		$unifont = "freeserif";
		break;
	CASE "ne":  CASE "nep":	// Nepali
		$unifont = "freeserif";
		break;
	CASE "or":  CASE "ori":	// ORIYA
		$unifont = "freeserif";
		break;
	CASE "si":  CASE "sin":	// SINHALA
		$unifont = "kaputaunicode";
		break;
	CASE "ta":  CASE "tam":	// TAMIL
		$unifont = "freeserif";
		break;
	CASE "te":  CASE "tel":	// TELUGU
		$unifont = "pothana2000";
		break;


	// Sindhi (Arabic or Devanagari)
	CASE "sd":  CASE "snd":	// Sindhi
		if ($country == "IN") { $unifont = "freeserif"; }
		else if ($country == "PK") { $unifont = "lateef"; } 
		else { $unifont = "lateef"; }
		break;


	//CASE "ccp":	// CHAKMA
	//CASE "lep":	// LEPCHA
	CASE "lif":		// LIMBU
		$unifont = "sun-exta";
		break;
	//CASE "sat":	// OL_CHIKI
	//CASE "saz":	// SAURASHTRA
	CASE "syl":		// SYLOTI_NAGRI
		$unifont = "mph2bdamase";
		break;
	//CASE "dgo":	// TAKRI
	CASE "dv":  CASE "div":	// Divehi; Maldivian  THAANA
		$unifont = "freeserif";
		break;



/* South East Asian */
	CASE "km":  CASE "khm":	// KHMER
		$unifont = "khmeros";
		break;
	CASE "lo":  CASE "lao":	// LAO
		$unifont = "dhyana";
		break;
	CASE "my":  CASE "mya":	// MYANMAR Burmese
		$unifont = "tharlon";	// zawgyi-one is non-unicode compliant but in wide usage 
						// ayar is also not strictly compliant
						// padaukbook is unicode compliant
		break;
	CASE "th":  CASE "tha":	// THAI
		$unifont = "garuda";
		break;



	// VIETNAMESE
	CASE "vi":  CASE "vie":	// Vietnamese
		$unifont = "dejavusanscondensed"; 
		break;


	//CASE "ms":  CASE "msa":	// Malay


	//CASE "ban":	// BALINESE
	//CASE "bya":	// BATAK
	CASE "bug":		// BUGINESE
		$unifont = "freeserif";
		break;
	//CASE "cjm":	// CHAM
	//CASE "jv":	// JAVANESE
	CASE "su":		// SUNDANESE
		$unifont = "sundaneseunicode";
		break;
	CASE "tdd":		// TAI_LE
		$unifont = "tharlon";
		break;
	CASE "blt":		// TAI_VIET
		$unifont = "taiheritagepro";
		break;


/* Phillipine */
	CASE "bku":		// BUHID
		$unifont = "quivira";
		break;
	CASE "hnn":		// HANUNOO
		$unifont = "quivira";
		break;
	CASE "tl":		// TAGALOG
		$unifont = "quivira";
		break;
	CASE "tbw":		// TAGBANWA
		$unifont = "quivira";
		break;


/* East Asian */
	CASE "zh":  CASE "zho":	// Chinese
		if ($country == "HK" || $country == "TW") { 
			if ($adobeCJK) { $unifont = "big5"; }
			else { $unifont = "sun-exta"; }
		}
		else if ($country == "CN") { 
			if ($adobeCJK) { $unifont = "gb"; }
			else { $unifont = "sun-exta"; }
		}
	  	else { 
			if ($adobeCJK) { $unifont = "gb"; }
			else { $unifont = "sun-exta"; }
		}
		break;
	CASE "ko":  CASE "kor":	// HANGUL Korean
		if ($adobeCJK) { $unifont = "uhc"; }
		else { $unifont = "unbatang"; }
		break;
	CASE "ja":  CASE "jpn":	// Japanese HIRAGANA KATAKANA
		if ($adobeCJK) { $unifont = "sjis"; }
		else { $unifont = "sun-exta"; }
		break;
	CASE "ii":  CASE "iii":	// Nuosu; Yi
		if ($adobeCJK) { $unifont = "gb"; }
		else { $unifont = "sun-exta"; }
	CASE "lis":		// LISU
		$unifont = "quivira";
		break;



/* American */
	CASE "chr":		// CHEROKEE
	CASE "oj":  CASE "oji":	// Ojibwe; Chippewa
	CASE "cr":  CASE "cre":	// Cree CANADIAN_ABORIGINAL
	CASE "iu":  CASE "iku":	// Inuktitut
		$unifont = "aboriginalsans";
		break;


/* Undetermined language - script used */
	CASE "und":

		switch($script){

		/* European */
		CASE "latn":	// LATIN
			$unifont = "dejavusanscondensed";
			break;
		CASE "cyrl":	// CYRILLIC
			$unifont = "dejavusanscondensed";	/* freeserif best coverage for supplements etc. */
			break;
		CASE "cprt":	// CYPRIOT
			$unifont = "aegean";
			break;
		CASE "glag":	// GLAGOLITIC
			$unifont = "mph2bdamase";
			break;
		CASE "linb":	// LINEAR_B
			$unifont = "aegean";
			break;
		CASE "ogam":	// OGHAM
			$unifont = "dejavusans";
			break;
		CASE "ital":	// OLD_ITALIC
			$unifont = "aegean";
			break;
		CASE "runr":	// RUNIC
			$unifont = "sun-exta";
			break;
		CASE "shaw":	// SHAVIAN
			$unifont = "mph2bdamase";
			break;

		/* African */
		CASE "egyp":	// EGYPTIAN_HIEROGLYPHS
			$unifont = "aegyptus";
			break;
		CASE "ethi":	// ETHIOPIC
			$unifont = "abyssinicasil";
			break;
		//CASE "merc":	// MEROITIC_CURSIVE
		//CASE "mero":	// MEROITIC_HIEROGLYPHS
		CASE "osma":	// OSMANYA
			$unifont = "mph2bdamase";
			break;
		CASE "tfng":	// TIFINAGH
			$unifont = "dejavusans";
			break;

		/* Middle Eastern */
		CASE "arab":		// ARABIC
			$unifont = "xbriyaz";
			break;
		CASE "xsux":	// CUNEIFORM
			$unifont = "akkadian";
			break;
		//CASE "sarb":	// OLD_SOUTH_ARABIAN
		//CASE "prti":	// INSCRIPTIONAL_PARTHIAN
		//CASE "phli":	// INSCRIPTIONAL_PAHLAVI


		/* Central Asian */
		//CASE "orkh":	// OLD_TURKIC
		//CASE "phag":	// PHAGS_PA		(Vertical script)

		/* South Asian */
		//CASE "brah":	// BRAHMI
		//CASE "kthi":	// KAITHI
		CASE "khar":	// KHAROSHTHI
			$unifont = "mph2bdamase";
			break;
		CASE "mtei":	// MEETEI_MAYEK
			$unifont = "eeyekunicode";
			break;
		//CASE "shrd":	// SHARADA
		//CASE "sora":	// SORA_SOMPENG

		/* South East Asian */
		CASE "kali":	// KAYAH_LI
			$unifont = "freemono";
			break;
		//CASE "rjng":	// REJANG
		CASE "lana":	// TAI_THAM
			$unifont = "lannaalif";
			break;
		CASE "talu":	// NEW_TAI_LUE
			$unifont = "daibannasilbook";
			break;

		/* East Asian */
		CASE "hans":	// HAN (SIMPLIFIED)
			if ($adobeCJK) { $unifont = "gb"; }
			else { $unifont = "sun-exta"; }
			break;
		CASE "bopo":	// BOPOMOFO
			$unifont = "sun-exta";
			break;
		//CASE "plrd":	// MIAO
		CASE "yiii":	// YI
			$unifont = "sun-exta";
			break;

		/* American */
		CASE "dsrt":	// DESERET
			$unifont = "mph2bdamase";
			break;

		/* Other */
		CASE "brai":	// BRAILLE
			$unifont = "dejavusans";
			break;

		} // endswitch
		break;


	} // endswitch


	return array($coreSuitable ,$unifont);
}

?>
