298 lines
10 KiB
PHP
298 lines
10 KiB
PHP
<?php
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/**
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* SPDX-FileCopyrightText: 2024 Sascha Nitsch (grumpydeveloper) https://contentnation.net/@grumpydevelop
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* SPDX-License-Identifier: GPL-3.0-or-later
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* @author Author: Sascha Nitsch (grumpydeveloper)
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*/
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namespace Federator;
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/**
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* Language abstraction class
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* @author Sascha Nitsch
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*
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*/
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class Language
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{
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/**
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* list of valid languages
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*
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* @var array $validLanguages
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*/
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private $validLanguages = array(
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"de" => true,
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"en" => true,
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"xy" => true
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);
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/**
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* language to use
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*
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* @var string $uselang
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*/
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private $uselang;
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/**
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* actual language data
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*
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* @var array<string, array<string, string>> $lang
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*/
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private $lang = [];
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/**
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* constructor that tries to autodetect language
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*
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* @param ?string $uselang
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* use this language instead of autodetection, set to null if no preference
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*/
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public function __construct($uselang = null)
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{
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$this->lang = [];
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if ($uselang !== null) {
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if (! array_key_exists($uselang, $this->validLanguages)) {
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$uselang = null;
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}
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}
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if ($uselang === null && array_key_exists('_lang', $_REQUEST)) {
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$language = $_REQUEST['_lang'];
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if (array_key_exists($language, $this->validLanguages)) {
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$uselang = $language;
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}
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}
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if ($uselang === null && array_key_exists('HTTP_ACCEPT_LANGUAGE', $_SERVER)) {
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$matches = array();
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if (preg_match("/^(\S\S)\-/", $_SERVER['HTTP_ACCEPT_LANGUAGE'], $matches) == 1) {
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$language = $matches[1];
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if (array_key_exists($language, $this->validLanguages)) {
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$uselang = $language;
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}
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}
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}
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if ($uselang === null) {
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$uselang = 'en';
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}
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$this->uselang = $uselang;
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}
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/**
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* print translation of given group and id, optionally using variables
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*
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* @param string $group
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* group name
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* @param string $key
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* string name
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* @param array<mixed> $values
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* optional values to replace
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* @return string translated string
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*/
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public function printlang($group, $key, array $values = array())
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{
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if ($this->uselang === 'xy') {
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return "$group:$key";
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}
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if (! isset($this->lang[$group])) {
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$l = [];
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$root = $_SERVER['DOCUMENT_ROOT'];
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if ($root === '') {
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$root = '.';
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}
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if (@file_exists($root . '/../lang/' . $this->uselang . "/$group.inc")) {
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require($root . '/../lang/' . $this->uselang . "/$group.inc");
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$this->lang[$group] = $l;
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}
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}
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if (array_key_exists($group, $this->lang) && array_key_exists($key, $this->lang[$group])) {
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$string = $this->lang[$group][$key];
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for ($i = 0; $i < 9; $i ++) {
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if (isset($values[$i])) {
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$string = str_replace("\$$i", $values[$i], $string);
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} else {
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$string = str_replace("\$$i", "", $string);
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}
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}
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return $string;
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}
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$basedir = $_SERVER['DOCUMENT_ROOT'] . '/../';
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$fh = @fopen("$basedir/logs/missingtrans.txt", 'a');
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if ($fh !== false) {
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fwrite($fh, $this->uselang.":$group:$key\n");
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fclose($fh);
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}
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return ">>$group:$key<<";
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}
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/**
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* get keys (valid ids) of a named group
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*
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* @param string $group
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* group name to fetch keys
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* @return array<string> list of keys
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*/
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public function getKeys(string $group)
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{
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if (! isset($this->lang[$group])) {
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$l = [];
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require_once($_SERVER['DOCUMENT_ROOT'] . '/../lang/' . $this->uselang . "/$group.inc");
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$this->lang[$group] = $l;
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}
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return array_keys($this->lang[$group]);
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}
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/**
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* return current used language
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*
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* @return string current language
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*/
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public function getLang()
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{
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return $this->uselang;
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}
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/**
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* guess langauge of text
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*
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* @param string $text input text
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* @param string $default default language
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* @param bool $debug debug flag
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* @return string detected language
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*/
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public static function guessLanguage($text, $default, $debug = false)
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{
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$supported_languages = array(
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'en',
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'de',
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);
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$wordList = [];
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// German word list
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// from http://wortschatz.uni-leipzig.de/Papers/top100de.txt
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$wordList['de'] = array (
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'die', 'der', 'und', /*'in',*/ 'zu', 'den', 'das', 'nicht', 'von', 'sie',
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'ist', 'des', 'sich', 'mit', 'dem', 'dass', 'er', 'es', 'ein', 'ich',
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'auf', 'so', 'eine', 'auch', 'als', 'an', 'nach', 'wie', 'im', 'für',
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'man', 'aber', 'aus', 'durch', 'wenn', 'nur', 'war', 'noch', 'werden',
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'bei', 'hat', 'wir', 'was', 'wird', 'sein', 'einen', 'welche', 'sind',
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'oder', 'zur', 'um', 'haben', 'einer', 'mir', 'über', 'ihm', 'diese',
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'einem', 'ihr', 'uns', 'da', 'zum', 'kann', 'doch', 'vor', 'dieser',
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'mich', 'ihn', 'du', 'hatte', 'seine', 'mehr', 'am', 'denn', 'nun',
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'unter', 'sehr', 'selbst', 'schon', 'hier', 'bis', 'habe', 'ihre',
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'dann', 'ihnen', 'seiner', 'alle', 'wieder', 'meine', 'Zeit', 'gegen',
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'vom', 'ganz', 'einzelnen', 'wo', 'muss', 'ohne', 'eines', 'können',
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'sei', 'geschrieben', 'instanzen', 'deutsch','aktualisierung', 'registrierung'
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);
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// English word list
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// from http://en.wikipedia.org/wiki/Most_common_words_in_English
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$wordList['en'] = array ('the', 'be', 'to', 'of', 'and', 'a', /*'in',*/
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'that', 'have', 'I', 'it', 'for', 'not', 'on', 'with', 'he',
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'as', 'you', 'do', 'at', 'this', 'but', 'his', 'by', 'from', 'they',
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'we', 'say', 'her', 'she', 'or', 'an', 'will', 'my', 'one', 'all',
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'would', 'there', 'their', 'what', 'so', 'up', 'out', 'if', 'about'
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);
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// French word list
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// from https://1000mostcommonwords.com/1000-most-common-french-words/
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/*$wordList['fr'] = array ('comme', 'que', 'tait', 'pour', 'sur', 'sont', 'avec',
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'tre', 'un', 'ce', 'par', 'mais', 'que', 'est',
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'il', 'eu', 'la', 'et', 'dans');*/
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// Spanish word list
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// from https://spanishforyourjob.com/commonwords/
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/*$wordList['es'] = array ('que', 'no', 'a', 'la', 'el', 'es', 'y',
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'en', 'lo', 'un', 'por', 'qu', 'si', 'una',
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'los', 'con', 'para', 'est', 'eso', 'las');*/
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// clean out the input string - note we don't have any non-ASCII
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// characters in the word lists... change this if it is not the
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// case in your language wordlists!
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$txt = strip_tags($text);
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$txt = preg_replace("/[^A-Za-z:\\/\\.]+/", ' ', $txt);
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if ($debug) {
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echo "text: '$txt'\n";
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}
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$counter = [];
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// count the occurrences of the most frequent words
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foreach ($supported_languages as $language) {
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$counter[$language] = 0;
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}
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foreach ($supported_languages as $language) {
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for ($i = 0; $i < sizeof($wordList[$language]); ++$i) {
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$count = substr_count($txt, ' ' .$wordList[$language][$i] . ' ');
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if ($debug && $count > 0) {
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echo $language . " " . $wordList[$language][$i] . " => $count\n";
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}
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$counter[$language] += $count;
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}
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}
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if ($debug) {
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print_r($counter);
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}
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// get max counter value
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$max = max($counter);
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$maxs = array_keys($counter, $max);
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// if there are two winners - fall back to default!
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if (count($maxs) == 1) {
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$winner = $maxs[0];
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$second = 0;
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// get runner-up (second place)
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foreach ($supported_languages as $language) {
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if ($language !== $winner) {
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if ($counter[$language]>$second) {
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$second = $counter[$language];
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}
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}
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}
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// apply arbitrary threshold of 50%
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if (($second / $max) < 0.5) {
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return $winner;
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}
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}
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return $default;
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}
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}
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/**
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* function called from smarty templates to print language translation
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*
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* @param array<string, mixed> $params
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* smarty params, used are 'group', 'txt' and optionally 'var'
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* @param \Smarty\Template $template
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* template instance
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* @return string translated text
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*/
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function smarty_function_printlang($params, $template) : string
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{
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$lang = $template->getTemplateVars("language");
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<<<'PHAN'
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@phan-var \Language $lang
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PHAN;
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$forcelang = array_key_exists('lang', $params) ? $params['lang'] : null;
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if ($forcelang !== null) {
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$lang = new Language($forcelang);
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}
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if (isset($params['var'])) {
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return $lang->printlang($params['group'], $params['key'], $params['var']);
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} else {
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return $lang->printlang($params['group'], $params['key']);
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}
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}
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/**
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* function called from smarty templates to set language translation as JS string
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*
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* @param array<string, mixed> $params
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* smarty params, used are 'group', 'txt' and optionally 'var'
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* @param \Smarty\Template $template
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* template instance
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* @return string translated text as JS line
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*/
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function smarty_function_printjslang($params, $template) : string
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{
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$lang = $template->getTemplateVars("language");
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$prefix = 'window.translations.' . $params['group'] . '.' . $params['key'] . ' = \'';
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$postfix = '\';';
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if (isset($params['var'])) {
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return $prefix . $lang->printlang($params['group'], $params['key'], $params['var']) . $postfix;
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} else {
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return $prefix . $lang->printlang($params['group'], $params['key']) . $postfix;
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}
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}
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