131 lines
4.1 KiB
PHP
131 lines
4.1 KiB
PHP
<?php
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// Making sure the file is included and not accessed directly.
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if(basename(__FILE__) == basename($_SERVER["SCRIPT_FILENAME"])) {
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header('HTTP/1.1 403 Forbidden');
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die();
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}
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// FIXME: Make a note of which variables are being used from that file !
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include_once 'commons/config.php';
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// This helper requires PHP 8 or newer !
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// Setting the default values.
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$default_language = "en";
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$user_language = "en";
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$user_uri_language = "";
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// Attempting to detect the language through the URI
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if(str_starts_with($_SERVER['REQUEST_URI'], "/en/")) {
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$user_language = "en";
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$user_uri_language = "/".$user_language;
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} elseif(str_starts_with($_SERVER['REQUEST_URI'], "/fr/")) {
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$user_language = "fr";
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$user_uri_language = "/".$user_language;
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} elseif(isset($_SERVER['HTTP_ACCEPT_LANGUAGE'])) {
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// Attempting to detect the language through the browser's headers.
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$_client_languages = [];
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foreach(explode(",", $_SERVER["HTTP_ACCEPT_LANGUAGE"]) as $_client_lang_entry) {
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$_client_lang_entry_parts = explode(";", $_client_lang_entry);
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// Ignoring "en-US" and similar entries
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if(count($_client_lang_entry_parts) != 2) {
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continue;
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}
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// Only allowing supported languages
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if(!in_array($_client_lang_entry_parts[0], ["en", "fr"])) {
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continue;
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}
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// Parsing the language's weight
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$_client_lang_entry_parts[1] = str_replace("q=", "", $_client_lang_entry_parts[1]);
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$_client_lang_entry_weight = filter_var($_client_lang_entry_parts[1], FILTER_VALIDATE_FLOAT);
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if($_client_lang_entry_weight === false || !is_float($_client_lang_entry_weight)) {
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continue;
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}
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// Saving it for later
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$_client_languages[] = $_client_lang_entry_parts;
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}
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// Sorting based on weight and selecting the preferred one.
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if(count($_client_languages) > 0) {
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usort($_client_languages, function(array $a, array $b) {
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if($a[1] == $b[1]) {
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return 0;
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}
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return ($a[1] > $b[1]) ? -1 : 1;
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});
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$user_language = $_client_languages[0][0];
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}
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}
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// Preparing other related variables
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$lang_number_decimal = $user_language == "en" ? "." : ",";
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$lang_number_thousands = $user_language == "en" ? "," : ".";
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// Setting headers
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header("Content-Language: " . $user_language);
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// Reading and parsing the strings.json file
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$lang_json = file_get_contents(realpath($dir_commons . "/strings.json"));
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$lang_data = json_decode($lang_json, true);
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// Localization functions
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function localize_private(string $string_key, array $private_lang_data, bool $fallback_to_common = false,
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string $fallback_prefix = "fallback.unknown") : string {
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global $user_language, $default_language, $lang_data;
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if(array_key_exists($user_language, $private_lang_data)) {
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if(array_key_exists($string_key, $private_lang_data[$user_language])) {
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// If found in direct array in user's language.
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return $private_lang_data[$user_language][$string_key];
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}
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}
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if(array_key_exists($default_language, $private_lang_data)) {
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if(array_key_exists($string_key, $private_lang_data[$default_language])) {
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// If found in direct array in default language.
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return $private_lang_data[$default_language][$string_key];
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}
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}
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if($fallback_to_common) {
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// If we can attempt to fall back on the common lang file.
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return localize_private($fallback_prefix . $string_key, $lang_data, false);
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}
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// If nothing could be done, we simply return the key.
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return $string_key;
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}
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function localize($string_key, ?array $param_values = null) : string {
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global $lang_data;
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if(is_null($param_values)) {
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return localize_private($string_key, $lang_data, false);
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} else {
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$localized_string = localize_private($string_key, $lang_data, false);
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for($iStrParam = 0; $iStrParam < sizeof($param_values); $iStrParam++) {
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$localized_string = str_replace("%" . $iStrParam, $param_values[$iStrParam], $localized_string);
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}
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return $localized_string;
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}
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}
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function l10n_url_abs($url) : string {
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global $user_uri_language;
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return $user_uri_language . $url;
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}
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function l10n_url_switch($lang) : string {
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if(is_null($lang)) {
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return preg_replace("^\/(lb|lu|fr|en)^", "", $_SERVER['REQUEST_URI']);
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} else {
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return "/".$lang.preg_replace("^\/(lb|lu|fr|en)^", "", $_SERVER['REQUEST_URI']);
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}
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}
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?>
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