165 lines
3.6 KiB
PHP
165 lines
3.6 KiB
PHP
<?php namespace System;
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class Lang {
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/**
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* All of the loaded language files.
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*
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* @var array
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*/
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private static $loaded = array();
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/**
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* All of the loaded language lines.
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*
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* The array is keyed by [$language.$file].
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*
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* @var array
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*/
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private static $lines = array();
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/**
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* The key of the line that is being requested.
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*
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* @var string
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*/
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private $key;
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/**
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* The place-holder replacements.
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*
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* @var array
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*/
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private $replacements = array();
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/**
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* Create a new Lang instance.
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*
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* @param string $line
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* @return void
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*/
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public function __construct($key)
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{
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$this->key = $key;
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}
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/**
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* Create a Lang instance for a language line.
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*
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* @param string $key
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* @return Lang
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*/
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public static function line($key)
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{
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return new static($key);
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}
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/**
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* Get the language line for a given language.
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*
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* @param string $language
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* @return string
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*/
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public function get($language = null)
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{
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if (is_null($language))
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{
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$language = Config::get('application.language');
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}
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list($file, $line) = $this->parse($this->key);
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$this->load($file, $language);
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// --------------------------------------------------------------
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// Get the language line from the appropriate file array.
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// --------------------------------------------------------------
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if (array_key_exists($line, static::$lines[$language.$file]))
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{
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$line = static::$lines[$language.$file][$line];
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}
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else
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{
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throw new \Exception("Language line [$line] does not exist for language [$language]");
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}
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// --------------------------------------------------------------
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// Make all place-holder replacements. Place-holders are prefixed
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// with a colon for convenient location.
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// --------------------------------------------------------------
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foreach ($this->replacements as $key => $value)
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{
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$line = str_replace(':'.$key, $value, $line);
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}
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return $line;
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}
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/**
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* Parse a language key.
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*
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* @param string $key
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* @return array
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*/
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private function parse($key)
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{
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// --------------------------------------------------------------
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// The left side of the dot is the file name, while the right
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// side of the dot is the item within that file being requested.
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// --------------------------------------------------------------
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$segments = explode('.', $key);
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if (count($segments) < 2)
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{
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throw new \Exception("Invalid language key [$key].");
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}
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return array($segments[0], implode('.', array_slice($segments, 1)));
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}
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/**
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* Load a language file.
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*
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* @param string $file
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* @param string $language
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* @return void
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*/
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private function load($file, $language)
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{
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// --------------------------------------------------------------
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// If we have already loaded the language file, bail out.
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// --------------------------------------------------------------
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if (in_array($language.$file, static::$loaded))
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{
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return;
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}
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// --------------------------------------------------------------
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// Load the language file into the array of lines. The array
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// is keyed by the language and file name.
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// --------------------------------------------------------------
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if (file_exists($path = APP_PATH.'lang/'.$language.'/'.$file.EXT))
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{
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static::$lines[$language.$file] = require $path;
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}
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else
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{
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throw new \Exception("Language file [$file] does not exist for language [$language].");
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}
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static::$loaded[] = $language.$file;
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}
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/**
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* Set the place-holder replacements.
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*
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* @param array $replacements
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* @return Lang
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*/
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public function replace($replacements)
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{
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$this->replacements = $replacements;
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return $this;
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}
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} |