145 lines
4.4 KiB
PHP
145 lines
4.4 KiB
PHP
<?php
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// $Id$
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/**
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* @file
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* Multiple language handling functionality.
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*/
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/**
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* Choose a language for the page, based on language negotiation settings.
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*/
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function language_initialize() {
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global $user;
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// Configured presentation language mode.
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$mode = variable_get('language_negotiation', LANGUAGE_NEGOTIATION_NONE);
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// Get a list of enabled languages.
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$languages = language_list('enabled');
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$languages = $languages[1];
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switch ($mode) {
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case LANGUAGE_NEGOTIATION_NONE:
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return language_default();
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case LANGUAGE_NEGOTIATION_DOMAIN:
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foreach ($languages as $language) {
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$parts = parse_url($language->domain);
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if (!empty($parts['host']) && ($_SERVER['SERVER_NAME'] == $parts['host'])) {
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return $language;
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}
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}
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return language_default();
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case LANGUAGE_NEGOTIATION_PATH_DEFAULT:
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case LANGUAGE_NEGOTIATION_PATH:
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// $_GET['q'] might not be available at this time, because
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// path initialization runs after the language bootstrap phase.
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$args = isset($_GET['q']) ? explode('/', $_GET['q']) : array();
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$prefix = array_shift($args);
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// Search prefix within enabled languages.
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foreach ($languages as $language) {
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if (!empty($language->prefix) && $language->prefix == $prefix) {
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// Rebuild $GET['q'] with the language removed.
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$_GET['q'] = implode('/', $args);
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return $language;
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}
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}
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if ($mode == LANGUAGE_NEGOTIATION_PATH_DEFAULT) {
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// If we did not found the language by prefix, choose the default.
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return language_default();
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}
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break;
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}
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// User language.
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if ($user->uid && isset($languages[$user->language])) {
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return $languages[$user->language];
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}
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// Browser accept-language parsing.
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if ($language = language_from_browser()) {
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return $language;
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}
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// Fall back on the default if everything else fails.
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return language_default();
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}
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/**
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* Identify language from the Accept-language HTTP header we got.
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*/
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function language_from_browser() {
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// Specified by the user via the browser's Accept Language setting
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// Samples: "hu, en-us;q=0.66, en;q=0.33", "hu,en-us;q=0.5"
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$browser_langs = array();
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if (isset($_SERVER['HTTP_ACCEPT_LANGUAGE'])) {
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$browser_accept = explode(",", $_SERVER['HTTP_ACCEPT_LANGUAGE']);
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for ($i = 0; $i < count($browser_accept); $i++) {
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// The language part is either a code or a code with a quality.
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// We cannot do anything with a * code, so it is skipped.
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// If the quality is missing, it is assumed to be 1 according to the RFC.
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if (preg_match("!([a-z-]+)(;q=([0-9\\.]+))?!", trim($browser_accept[$i]), $found)) {
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$browser_langs[$found[1]] = (isset($found[3]) ? (float) $found[3] : 1.0);
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}
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}
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}
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// Order the codes by quality
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arsort($browser_langs);
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// Try to find the first preferred language we have
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$languages = language_list('enabled');
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foreach ($browser_langs as $langcode => $q) {
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if (isset($languages['1'][$langcode])) {
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return $languages['1'][$langcode];
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}
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}
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}
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/**
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* Rewrite URL's with language based prefix. Parameters are the same
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* as those of the url() function.
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*/
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function language_url_rewrite(&$path, &$options) {
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global $language;
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// Only modify relative (insite) URLs.
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if (!$options['external']) {
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// Language can be passed as an option, or we go for current language.
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if (!isset($options['language'])) {
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$options['language'] = $language;
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}
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switch (variable_get('language_negotiation', LANGUAGE_NEGOTIATION_NONE)) {
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case LANGUAGE_NEGOTIATION_NONE:
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// No language dependent path allowed in this mode.
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unset($options['language']);
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break;
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case LANGUAGE_NEGOTIATION_DOMAIN:
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if ($options['language']->domain) {
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// Ask for an absolute URL with our modified base_url.
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$options['absolute'] = TRUE;
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$options['base_url'] = $options['language']->domain;
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}
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break;
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case LANGUAGE_NEGOTIATION_PATH_DEFAULT:
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$default = language_default();
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if ($options['language']->language == $default->language) {
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break;
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}
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// Intentionally no break here.
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case LANGUAGE_NEGOTIATION_PATH:
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if (!empty($options['language']->prefix)) {
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$options['prefix'] = $options['language']->prefix . '/';
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}
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break;
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}
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}
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}
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