Remove old GetSettings for language legacy flow

www/configs/config.php

@@ -57,6 +57,7 @@ foreach (['admin', 'frontend'] as $folder) {
 	}
 }
 // if content path is empty, fallback is default
+/** @phpstan-ignore-next-line can be empty */
 if (empty($folder)) {
 	$folder = 'default';
 }

www/lib/CoreLibs/Language/GetSettings.php

@@ -1,141 +0,0 @@
-<?php
-
-/*
- * Internal function for getting languange and encodig settings
- */
-
-declare(strict_types=1);
-
-namespace CoreLibs\Language;
-
-class GetSettings
-{
-	/**
-	 * Sets encoding and language
-	 * Can be overridden with language + path to mo file
-	 * If locale is set it must be in the format of:
-	 * <lang>.<encoding>
-	 * <lang>_<country>.<encoding>
-	 * <lang>_<country>.<encoding>@<subset>
-	 * If no encoding is set in the is, UTF-8 is assumed
-	 *
-	 * Returned is an array with array indes and dictionary index
-	 * 0~4 array are
-	 * encoding: 0
-	 * lang: 1
-	 * lang_short: 2
-	 * domain: 3
-	 * path: 4
-	 *
-	 * @param  string|null $locale A valid locale name
-	 * @param  string|null $path   A valid path where the mo files will be based
-	 * @return array<int|string,string> Settings as array/dictionary
-	 * @deprecated Use CoreLibs\Language\GetLocale::setLocale()
-	 */
-	public static function setLangEncoding(
-		?string $locale = null,
-		?string $domain = null,
-		?string $path = null
-	): array {
-		$lang = '';
-		$lang_short = '';
-		$encoding = '';
-		// if is is set, extract
-		if (!empty($locale)) {
-			preg_match(
-				// language code
-				'/^(?P<lang>[a-z]{2,3})'
-				// _ country code
-				. '(?:_(?P<country>[A-Z]{2}))?'
-				// . charset
-				. '(?:\\.(?P<charset>[-A-Za-z0-9_]+))?'
-				// @ modifier
-				. '(?:@(?P<modifier>[-A-Za-z0-9_]+))?$/',
-				$locale,
-				$matches
-			);
-			// lang short part
-			$lang_short = $matches['lang'] ?? '';
-			$lang = $lang_short;
-			// lang + country if country is set
-			if (!empty($matches['country'])) {
-				$lang = sprintf('%s_%s', $lang_short, $matches['country']);
-			}
-			// encoding if set
-			$encoding = strtoupper($matches['charset'] ?? 'UTF-8');
-		}
-		// if domain is set, must be alphanumeric, if not unset
-		if (
-			!empty($domain) &&
-			!preg_match("/^\w+$/", $domain)
-		) {
-			$domain = '';
-		}
-		// path checks if set, if not valid path unset
-		if (
-			!empty($path) &&
-			!is_dir($path)
-		) {
-			$path = '';
-		}
-
-		// just emergency fallback for language
-		// set encoding
-		if (empty($encoding)) {
-			if (!empty($_SESSION['DEFAULT_CHARSET'])) {
-				$encoding = $_SESSION['DEFAULT_CHARSET'];
-			} else {
-				$encoding = DEFAULT_ENCODING;
-			}
-		}
-		// gobal override
-		if (empty($lang)) {
-			if (!empty($GLOBALS['OVERRIDE_LANG'])) {
-				$lang = $GLOBALS['OVERRIDE_LANG'];
-			} elseif (!empty($_SESSION['DEFAULT_LANG'])) {
-				// session (login)
-				$lang = $_SESSION['DEFAULT_LANG'];
-			} else {
-				// mostly default SITE LANG or DEFAULT LANG
-				$lang = defined('SITE_LANG') && !empty(SITE_LANG) ?
-					SITE_LANG :
-					DEFAULT_LANG;
-			}
-		}
-		// create the char lang encoding
-		if (empty($lang_short)) {
-			$lang_short = substr($lang, 0, 2);
-		}
-		// set the language folder
-		if (empty($path)) {
-			// LEGACY
-			$path = BASE . INCLUDES . LANG . CONTENT_PATH;
-			// will be BASE . INCLUDES . LANG . $language . /LC_MESSAGES/
-			// so CONTENT_PATH has to be removed
-		}
-		// if no domain is set, fall back to content path
-		if (empty($domain)) {
-			$domain = str_replace('/', '', CONTENT_PATH);
-		}
-		// return
-		return [
-			// as array
-			0 => $encoding,
-			1 => $lang,
-			2 => $lang_short,
-			3 => $domain,
-			4 => $path,
-			// with index name
-			// encoding
-			'encoding' => $encoding,
-			// language full string, eg en_US
-			'lang' => $lang,
-			// lang short, if eg en_US only en
-			'lang_short' => $lang_short,
-			// translation domain (CONTENT_PATH)
-			'domain' => $domain,
-			// folder BASE ONLY
-			'path' => $path,
-		];
-	}
-}