forked from Business/BinStack
123 lines
3.6 KiB
PHP
123 lines
3.6 KiB
PHP
<?php
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/*
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* This Source Code Form is subject to the terms of the Mozilla Public
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* License, v. 2.0. If a copy of the MPL was not distributed with this
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* file, You can obtain one at http://mozilla.org/MPL/2.0/.
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*/
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/**
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* Provides translated language strings.
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*/
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class Strings {
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private $language = "en";
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private $strings = [];
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public function __construct($language = "en") {
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if (!preg_match("/[a-zA-Z\_\-]+/", $language)) {
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throw new Exception("Invalid language code $language");
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}
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$this->load("en");
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if ($language == "en") {
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return;
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}
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if (file_exists(__DIR__ . "/../langs/$language/")) {
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$this->language = $language;
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$this->load($language);
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} else {
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trigger_error("Language $language could not be found.", E_USER_WARNING);
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}
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}
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/**
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* Load all JSON files for the specified language.
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* @param string $language
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*/
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private function load(string $language) {
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$files = glob(__DIR__ . "/../langs/$language/*.json");
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foreach ($files as $file) {
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$strings = json_decode(file_get_contents($file), true);
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foreach ($strings as $key => $val) {
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if (array_key_exists($key, $this->strings)) {
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trigger_error("Language key \"$key\" is defined more than once.", E_USER_WARNING);
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}
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$this->strings[$key] = $val;
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}
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}
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}
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/**
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* Add language strings dynamically.
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* @param array $strings ["key" => "value", ...]
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*/
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public function addStrings(array $strings) {
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foreach ($strings as $key => $val) {
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$this->strings[$key] = $val;
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}
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}
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/**
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* I18N string getter. If the key isn't found, it outputs the key itself.
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* @param string $key
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* @param bool $echo True to echo the result, false to return it. Default is true.
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* @return string
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*/
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public function get(string $key, bool $echo = true): string {
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$str = $key;
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if (array_key_exists($key, $this->strings)) {
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$str = $this->strings[$key];
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} else {
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trigger_error("Language key \"$key\" does not exist in " . $this->language, E_USER_WARNING);
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}
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if ($echo) {
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echo $str;
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}
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return $str;
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}
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/**
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* I18N string getter (with builder). If the key doesn't exist, outputs the key itself.
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* @param string $key
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* @param array $replace key-value array of replacements.
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* If the string value is "hello {abc}" and you give ["abc" => "123"], the
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* result will be "hello 123".
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* @param bool $echo True to echo the result, false to return it. Default is true.
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* @return string
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*/
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public function build(string $key, array $replace, bool $echo = true): string {
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$str = $key;
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if (array_key_exists($key, $this->strings)) {
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$str = $this->strings[$key];
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} else {
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trigger_error("Language key \"$key\" does not exist in " . $this->language, E_USER_WARNING);
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}
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foreach ($replace as $find => $repl) {
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$str = str_replace("{" . $find . "}", $repl, $str);
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}
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if ($echo) {
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echo $str;
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}
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return $str;
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}
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/**
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* Builds and returns a JSON key:value string for the supplied array of keys.
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* @param array $keys ["key1", "key2", ...]
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*/
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public function getJSON(array $keys): string {
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$strings = [];
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foreach ($keys as $k) {
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$strings[$k] = $this->get($k, false);
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}
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return json_encode($strings);
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}
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}
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