<?php
+
/**
- * translation support
+ * @brief translation support
+ *
+ * Get the language setting directly from system variables, bypassing Config::get()
+ * as database may not yet be configured.
+ *
+ * If possible, we use the value from the browser.
+ *
*/
-// load string translation table for alternate language
+use Friendica\Core\Config;
+
+require_once "include/dba.php";
+
+/**
+ * @brief get the prefered language from the HTTP_ACCEPT_LANGUAGE header
+ */
+function get_browser_language() {
+
+ if (x($_SERVER, 'HTTP_ACCEPT_LANGUAGE')) {
+ // break up string into pieces (languages and q factors)
+ preg_match_all('/([a-z]{1,8}(-[a-z]{1,8})?)\s*(;\s*q\s*=\s*(1|0\.[0-9]+))?/i',
+ $_SERVER['HTTP_ACCEPT_LANGUAGE'], $lang_parse);
+
+ $lang_list = [];
+ if (count($lang_parse[1])) {
+ // go through the list of prefered languages and add a generic language
+ // for sub-linguas (e.g. de-ch will add de) if not already in array
+ for ($i = 0; $i < count($lang_parse[1]); $i++) {
+ $lang_list[] = strtolower($lang_parse[1][$i]);
+ if (strlen($lang_parse[1][$i])>3 ) {
+ $dashpos = strpos($lang_parse[1][$i], '-');
+ if (!in_array(substr($lang_parse[1][$i], 0, $dashpos), $lang_list ) ) {
+ $lang_list[] = strtolower(substr($lang_parse[1][$i], 0, $dashpos));
+ }
+ }
+ }
+ }
+ }
+
+ // check if we have translations for the preferred languages and pick the 1st that has
+ for ($i = 0; $i < count($lang_list); $i++) {
+ $lang = $lang_list[$i];
+ if ($lang === 'en' || (file_exists("view/lang/$lang") && is_dir("view/lang/$lang"))) {
+ $preferred = $lang;
+ break;
+ }
+ }
+ if (isset($preferred)) {
+ return $preferred;
+ }
+
+ // in case none matches, get the system wide configured language, or fall back to English
+ return Config::get('system', 'language', 'en');
+}
+
+
+function push_lang($language) {
+ global $lang, $a;
+
+ $a->langsave = $lang;
+
+ if ($language === $lang) {
+ return;
+ }
+
+ if (isset($a->strings) && count($a->strings)) {
+ $a->stringsave = $a->strings;
+ }
+ $a->strings = array();
+ load_translation_table($language);
+ $lang = $language;
+}
+
+function pop_lang() {
+ global $lang, $a;
+
+ if ($lang === $a->langsave) {
+ return;
+ }
+
+ if (isset($a->stringsave)) {
+ $a->strings = $a->stringsave;
+ } else {
+ $a->strings = array();
+ }
+
+ $lang = $a->langsave;
+}
+
+// l
-if(! function_exists('load_translation_table')) {
+/**
+ * load string translation table for alternate language
+ *
+ * first plugin strings are loaded, then globals
+ *
+ * @param string $lang language code to load
+ */
function load_translation_table($lang) {
- global $a;
+ $a = get_app();
- if(file_exists("view/$lang/strings.php"))
- include("view/$lang/strings.php");
-}}
+ $a->strings = array();
+ // load enabled plugins strings
+ $plugins = dba::select('addon', array('name'), array('installed' => true));
+ while ($p = dba::fetch($plugins)) {
+ $name = $p['name'];
+ if (file_exists("addon/$name/lang/$lang/strings.php")) {
+ include("addon/$name/lang/$lang/strings.php");
+ }
+ }
-// translate string if translation exists
+ if (file_exists("view/lang/$lang/strings.php")) {
+ include("view/lang/$lang/strings.php");
+ }
-if(! function_exists('t')) {
-function t($s) {
+}
+/**
+ * @brief Return the localized version of the provided string with optional string interpolation
+ *
+ * This function takes a english string as parameter, and if a localized version
+ * exists for the current language, substitutes it before performing an eventual
+ * string interpolation (sprintf) with additional optional arguments.
+ *
+ * Usages:
+ * - t('This is an example')
+ * - t('URL %s returned no result', $url)
+ * - t('Current version: %s, new version: %s', $current_version, $new_version)
+ *
+ * @param string $s
+ * @return string
+ */
+function t($s)
+{
$a = get_app();
- if(x($a->strings,$s)) {
+ if (x($a->strings, $s)) {
$t = $a->strings[$s];
- return is_array($t)?$t[0]:$t;
+ $s = is_array($t) ? $t[0] : $t;
+ }
+ if (func_num_args() > 1) {
+ $args = array_slice(func_get_args(), 1);
+ $s = @vsprintf($s, $args);
}
+
return $s;
-}}
+}
-if(! function_exists('tt')){
-function tt($singular, $plural, $count){
-
+/**
+ * @brief Return the localized version of a singular/plural string with optional string interpolation
+ *
+ * This function takes two english strings as parameters, singular and plural, as
+ * well as a count. If a localized version exists for the current language, they
+ * are used instead. Discrimination between singular and plural is done using the
+ * localized function if any or the default one. Finally, a string interpolation
+ * is performed using the count as parameter.
+ *
+ * Usages:
+ * - tt('Like', 'Likes', $count)
+ * - tt("%s user deleted", "%s users deleted", count($users))
+ *
+ * @global type $lang
+ * @param string $singular
+ * @param string $plural
+ * @param int $count
+ * @return string
+ */
+function tt($singular, $plural, $count)
+{
+ global $lang;
$a = get_app();
- if(x($a->strings,$singular)) {
+ if (x($a->strings, $singular)) {
$t = $a->strings[$singular];
- $k = string_plural_select($count);
- return is_array($t)?$t[$k]:$t;
- }
-
- if ($count!=1){
- return $plural;
+ if (is_array($t)) {
+ $plural_function = 'string_plural_select_' . str_replace('-', '_', $lang);
+ if (function_exists($plural_function)) {
+ $plural_function = 'string_plural_select_default';
+ }
+ $i = $plural_function($count);
+ $s = $t[$i];
+ } else {
+ $s = $t;
+ }
+ } elseif (string_plural_select_default($count)) {
+ $s = $plural;
} else {
- return $singular;
+ $s = $singular;
+ }
+
+ $s = @sprintf($s, $count);
+
+ return $s;
+}
+
+// provide a fallback which will not collide with
+// a function defined in any language file
+function string_plural_select_default($n)
+{
+ return $n != 1;
+}
+
+
+
+/**
+ * @brief Return installed languages codes as associative array
+ *
+ * Scans the view/lang directory for the existence of "strings.php" files, and
+ * returns an alphabetical list of their folder names (@-char language codes).
+ * Adds the english language if it's missing from the list.
+ *
+ * Ex: array('de' => 'de', 'en' => 'en', 'fr' => 'fr', ...)
+ *
+ * @return array
+ */
+function get_available_languages() {
+ $langs = array();
+ $strings_file_paths = glob('view/lang/*/strings.php');
+
+ if (is_array($strings_file_paths) && count($strings_file_paths)) {
+ if (!in_array('view/lang/en/strings.php', $strings_file_paths)) {
+ $strings_file_paths[] = 'view/lang/en/strings.php';
+ }
+ asort($strings_file_paths);
+ foreach ($strings_file_paths as $strings_file_path) {
+ $path_array = explode('/', $strings_file_path);
+ $langs[$path_array[2]] = $path_array[2];
+ }
}
-}}
\ No newline at end of file
+ return $langs;
+}