gnu-social/lib/util/language.php

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<?php
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// This file is part of GNU social - https://www.gnu.org/software/social
//
// GNU social is free software: you can redistribute it and/or modify
// it under the terms of the GNU Affero General Public License as published by
// the Free Software Foundation, either version 3 of the License, or
// (at your option) any later version.
//
// GNU social is distributed in the hope that it will be useful,
// but WITHOUT ANY WARRANTY; without even the implied warranty of
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
// GNU Affero General Public License for more details.
//
// You should have received a copy of the GNU Affero General Public License
// along with GNU social. If not, see <http://www.gnu.org/licenses/>.
/**
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* Utility functions for i18n
*
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* @category I18n
* @package GNU social
* @author Matthew Gregg <matthew.gregg@gmail.com>
* @author Ciaran Gultnieks <ciaran@ciarang.com>
* @author Evan Prodromou <evan@status.net>
* @author Diogo Cordeiro <diogo@fc.up.pt>
* @copyright 2010-2019 Free Software Foundation, Inc http://www.fsf.org
* @license https://www.gnu.org/licenses/agpl.html GNU AGPL v3 or later
*/
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defined('GNUSOCIAL') || die();
// Locale category constants are usually predefined, but may not be
// on some systems such as Win32.
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$LC_CATEGORIES = ['LC_CTYPE',
'LC_NUMERIC',
'LC_TIME',
'LC_COLLATE',
'LC_MONETARY',
'LC_MESSAGES',
'LC_ALL'];
foreach ($LC_CATEGORIES as $key => $name) {
if (!defined($name)) {
define($name, $key);
}
}
// Emulate if not available.
if (!function_exists('gettext')) {
require_once('php-gettext/gettext.inc');
}
if (!function_exists('dpgettext')) {
/**
* Context-aware dgettext wrapper; use when messages in different contexts
* won't be distinguished from the English source but need different translations.
* The context string will appear as msgctxt in the .po files.
*
* Not currently exposed in PHP's gettext module; implemented to be compat
* with gettext.h's macros.
*
* @param string $domain domain identifier
* @param string $context context identifier, should be some key like "menu|file"
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* @param string $msg English source text
* @return string original or translated message
*/
function dpgettext($domain, $context, $msg)
{
$msgid = $context . "\004" . $msg;
$out = dcgettext($domain, $msgid, LC_MESSAGES);
if ($out == $msgid) {
return $msg;
} else {
return $out;
}
}
}
if (!function_exists('pgettext')) {
/**
* Context-aware gettext wrapper; use when messages in different contexts
* won't be distinguished from the English source but need different translations.
* The context string will appear as msgctxt in the .po files.
*
* Not currently exposed in PHP's gettext module; implemented to be compat
* with gettext.h's macros.
*
* @param string $context context identifier, should be some key like "menu|file"
* @param string $msgid English source text
* @return string original or translated message
*/
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function pgettext($context, $msgid)
{
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return dpgettext(textdomain(NULL), $context, $msgid);
}
}
if (!function_exists('dnpgettext')) {
/**
* Context-aware dngettext wrapper; use when messages in different contexts
* won't be distinguished from the English source but need different translations.
* The context string will appear as msgctxt in the .po files.
*
* Not currently exposed in PHP's gettext module; implemented to be compat
* with gettext.h's macros.
*
* @param string $domain domain identifier
* @param string $context context identifier, should be some key like "menu|file"
* @param string $msg singular English source text
* @param string $plural plural English source text
* @param int $n number of items to control plural selection
* @return string original or translated message
*/
function dnpgettext($domain, $context, $msg, $plural, $n)
{
$msgid = $context . "\004" . $msg;
$out = dcngettext($domain, $msgid, $plural, $n, LC_MESSAGES);
if ($out == $msgid) {
return $msg;
} else {
return $out;
}
}
}
if (!function_exists('npgettext')) {
/**
* Context-aware ngettext wrapper; use when messages in different contexts
* won't be distinguished from the English source but need different translations.
* The context string will appear as msgctxt in the .po files.
*
* Not currently exposed in PHP's gettext module; implemented to be compat
* with gettext.h's macros.
*
* @param string $context context identifier, should be some key like "menu|file"
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* @param string $msgid singular English source text
* @param string $plural plural English source text
* @param int $n number of items to control plural selection
* @return string original or translated message
*/
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function npgettext($context, $msgid, $plural, $n)
{
return dnpgettext(textdomain(NULL), $msgid, $plural, $n, LC_MESSAGES);
}
}
/**
* Shortcut for *gettext functions with smart domain detection.
*
* If calling from a plugin, this function checks which plugin was
* being called from and uses that as text domain, which will have
* been set up during plugin initialization.
*
* Also handles plurals and contexts depending on what parameters
* are passed to it:
*
* gettext -> _m($msg)
* ngettext -> _m($msg1, $msg2, $n)
* pgettext -> _m($ctx, $msg)
* npgettext -> _m($ctx, $msg1, $msg2, $n)
*
* @fixme may not work properly in eval'd code
*
* @param string $msg
* @return string
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* @throws Exception
*/
function _m($msg/*, ...*/)
{
$domain = _mdomain(debug_backtrace());
$args = func_get_args();
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switch (count($args)) {
case 1:
return dgettext($domain, $msg);
case 2:
return dpgettext($domain, $args[0], $args[1]);
case 3:
return dngettext($domain, $args[0], $args[1], $args[2]);
case 4:
return dnpgettext($domain, $args[0], $args[1], $args[2], $args[3]);
default:
throw new Exception("Bad parameter count to _m()");
}
}
/**
* Looks for which plugin we've been called from to set the gettext domain;
* if not in a plugin subdirectory, we'll use the default 'statusnet'.
*
* Note: we can't return null for default domain since most of the PHP gettext
* wrapper functions turn null into "" before passing to the backend library.
*
* @param array $backtrace debug_backtrace() output
* @return string
* @private
* @fixme could explode if SN is under a 'plugins' folder or share name.
*/
function _mdomain($backtrace)
{
/*
0 =>
array
'file' => string '/var/www/mublog/plugins/FeedSub/FeedSubPlugin.php' (length=49)
'line' => int 77
'function' => string '_m' (length=2)
'args' =>
array
0 => &string 'Feeds' (length=5)
*/
static $cached;
$path = $backtrace[0]['file'];
if (!isset($cached[$path])) {
if (DIRECTORY_SEPARATOR !== '/') {
$path = strtr($path, DIRECTORY_SEPARATOR, '/');
}
$plug = strpos($path, '/plugins/');
if ($plug === false) {
// We're not in a plugin; return default domain.
$final = 'statusnet';
} else {
$cut = $plug + 9;
$cut2 = strpos($path, '/', $cut);
if ($cut2) {
$final = substr($path, $cut, $cut2 - $cut);
} else {
// We might be running directly from the plugins dir?
// If so, there's no place to store locale info.
$final = 'statusnet';
}
}
$cached[$path] = $final;
}
return $cached[$path];
}
/**
* Content negotiation for language codes
*
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* @param $http_accept_lang_header string HTTP Accept-Language header
* @return string language code for best language match, false otherwise
*/
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function client_preferred_language($http_accept_lang_header)
{
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$client_langs = [];
$all_languages = common_config('site', 'languages');
preg_match_all('"(((\S\S)-?(\S\S)?)(;q=([0-9.]+))?)\s*(,\s*|$)"',
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strtolower($http_accept_lang_header), $http_langs);
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for ($i = 0; $i < count($http_langs); ++$i) {
if (!empty($http_langs[2][$i])) {
// if no q default to 1.0
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$client_langs[$http_langs[2][$i]] =
($http_langs[6][$i] ? (float)$http_langs[6][$i] : 1.0 - ($i * 0.01));
}
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if (!empty($http_langs[3][$i]) && empty($client_langs[$http_langs[3][$i]])) {
// if a catchall default 0.01 lower
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$client_langs[$http_langs[3][$i]] =
($http_langs[6][$i] ? (float)$http_langs[6][$i] - 0.01 : 0.99);
}
}
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// sort in descending q
arsort($client_langs);
foreach ($client_langs as $lang => $q) {
if (isset($all_languages[$lang])) {
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return ($all_languages[$lang]['lang']);
}
}
return false;
}
/**
* returns a simple code -> name mapping for languages
*
* @return array map of available languages by code to language name.
*/
function get_nice_language_list()
{
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$nice_lang = [];
$all_languages = common_config('site', 'languages');
foreach ($all_languages as $lang) {
$nice_lang = $nice_lang + array($lang['lang'] => $lang['name']);
}
return $nice_lang;
}
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/*
* Check whether a language is right-to-left
*
* @param string $lang language code of the language to check
*
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* @return boolean true if language is rtl
*/
function is_rtl($lang_value)
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{
foreach (common_config('site', 'languages') as $code => $info) {
if ($lang_value == $info['lang']) {
return $info['direction'] == 'rtl';
}
}
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}
/**
* Get a list of all languages that are enabled in the default config
*
* This should ONLY be called when setting up the default config in common.php.
* Any other attempt to get a list of languages should instead call
* common_config('site','languages')
*
* @return array mapping of language codes to language info
*/
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function get_all_languages()
{
return [
'af' => ['q' => 0.8, 'lang' => 'af', 'name' => 'Afrikaans', 'direction' => 'ltr'],
'ar' => ['q' => 0.8, 'lang' => 'ar', 'name' => 'Arabic', 'direction' => 'rtl'],
'ast' => ['q' => 1, 'lang' => 'ast', 'name' => 'Asturian', 'direction' => 'ltr'],
'eu' => ['q' => 1, 'lang' => 'eu', 'name' => 'Basque', 'direction' => 'ltr'],
'be-tarask' => ['q' => 0.5, 'lang' => 'be-tarask', 'name' => 'Belarusian (Taraškievica orthography)', 'direction' => 'ltr'],
'br' => ['q' => 0.8, 'lang' => 'br', 'name' => 'Breton', 'direction' => 'ltr'],
'bg' => ['q' => 0.8, 'lang' => 'bg', 'name' => 'Bulgarian', 'direction' => 'ltr'],
'my' => ['q' => 1, 'lang' => 'my', 'name' => 'Burmese', 'direction' => 'ltr'],
'ca' => ['q' => 0.5, 'lang' => 'ca', 'name' => 'Catalan', 'direction' => 'ltr'],
'zh-cn' => ['q' => 0.9, 'lang' => 'zh_CN', 'name' => 'Chinese (Simplified)', 'direction' => 'ltr'],
'zh-hant' => ['q' => 0.2, 'lang' => 'zh_TW', 'name' => 'Chinese (Taiwanese)', 'direction' => 'ltr'],
'ksh' => ['q' => 1, 'lang' => 'ksh', 'name' => 'Colognian', 'direction' => 'ltr'],
'cs' => ['q' => 0.5, 'lang' => 'cs', 'name' => 'Czech', 'direction' => 'ltr'],
'da' => ['q' => 0.8, 'lang' => 'da', 'name' => 'Danish', 'direction' => 'ltr'],
'nl' => ['q' => 0.5, 'lang' => 'nl', 'name' => 'Dutch', 'direction' => 'ltr'],
'arz' => ['q' => 0.8, 'lang' => 'arz', 'name' => 'Egyptian Spoken Arabic', 'direction' => 'rtl'],
'en' => ['q' => 1, 'lang' => 'en', 'name' => 'English', 'direction' => 'ltr'],
'en-us' => ['q' => 1, 'lang' => 'en', 'name' => 'English (US)', 'direction' => 'ltr'],
'en-gb' => ['q' => 1, 'lang' => 'en_GB', 'name' => 'English (UK)', 'direction' => 'ltr'],
'eo' => ['q' => 0.8, 'lang' => 'eo', 'name' => 'Esperanto', 'direction' => 'ltr'],
'fi' => ['q' => 1, 'lang' => 'fi', 'name' => 'Finnish', 'direction' => 'ltr'],
'fr' => ['q' => 1, 'lang' => 'fr', 'name' => 'French', 'direction' => 'ltr'],
'fr-fr' => ['q' => 1, 'lang' => 'fr', 'name' => 'French (France)', 'direction' => 'ltr'],
'fur' => ['q' => 0.8, 'lang' => 'fur', 'name' => 'Friulian', 'direction' => 'ltr'],
'gl' => ['q' => 0.8, 'lang' => 'gl', 'name' => 'Galician', 'direction' => 'ltr'],
'ka' => ['q' => 0.8, 'lang' => 'ka', 'name' => 'Georgian', 'direction' => 'ltr'],
'de' => ['q' => 0.8, 'lang' => 'de', 'name' => 'German', 'direction' => 'ltr'],
'el' => ['q' => 0.1, 'lang' => 'el', 'name' => 'Greek', 'direction' => 'ltr'],
'he' => ['q' => 0.5, 'lang' => 'he', 'name' => 'Hebrew', 'direction' => 'rtl'],
'hu' => ['q' => 0.8, 'lang' => 'hu', 'name' => 'Hungarian', 'direction' => 'ltr'],
'is' => ['q' => 0.1, 'lang' => 'is', 'name' => 'Icelandic', 'direction' => 'ltr'],
'id' => ['q' => 1, 'lang' => 'id', 'name' => 'Indonesian', 'direction' => 'ltr'],
'ia' => ['q' => 0.8, 'lang' => 'ia', 'name' => 'Interlingua', 'direction' => 'ltr'],
'ga' => ['q' => 0.5, 'lang' => 'ga', 'name' => 'Irish', 'direction' => 'ltr'],
'it' => ['q' => 1, 'lang' => 'it', 'name' => 'Italian', 'direction' => 'ltr'],
'ja' => ['q' => 0.5, 'lang' => 'ja', 'name' => 'Japanese', 'direction' => 'ltr'],
'ko' => ['q' => 0.9, 'lang' => 'ko', 'name' => 'Korean', 'direction' => 'ltr'],
'lv' => ['q' => 1, 'lang' => 'lv', 'name' => 'Latvian', 'direction' => 'ltr'],
'lt' => ['q' => 1, 'lang' => 'lt', 'name' => 'Lithuanian', 'direction' => 'ltr'],
'lb' => ['q' => 1, 'lang' => 'lb', 'name' => 'Luxembourgish', 'direction' => 'ltr'],
'mk' => ['q' => 0.5, 'lang' => 'mk', 'name' => 'Macedonian', 'direction' => 'ltr'],
'mg' => ['q' => 1, 'lang' => 'mg', 'name' => 'Malagasy', 'direction' => 'ltr'],
'ms' => ['q' => 1, 'lang' => 'ms', 'name' => 'Malay', 'direction' => 'ltr'],
'ml' => ['q' => 0.5, 'lang' => 'ml', 'name' => 'Malayalam', 'direction' => 'ltr'],
'ne' => ['q' => 1, 'lang' => 'ne', 'name' => 'Nepali', 'direction' => 'ltr'],
'nb' => ['q' => 0.1, 'lang' => 'nb', 'name' => 'Norwegian (Bokmål)', 'direction' => 'ltr'],
'no' => ['q' => 0.1, 'lang' => 'nb', 'name' => 'Norwegian (Bokmål)', 'direction' => 'ltr'],
'nn' => ['q' => 1, 'lang' => 'nn', 'name' => 'Norwegian (Nynorsk)', 'direction' => 'ltr'],
'fa' => ['q' => 1, 'lang' => 'fa', 'name' => 'Persian', 'direction' => 'rtl'],
'pl' => ['q' => 0.5, 'lang' => 'pl', 'name' => 'Polish', 'direction' => 'ltr'],
'pt' => ['q' => 1, 'lang' => 'pt', 'name' => 'Portuguese', 'direction' => 'ltr'],
'pt-br' => ['q' => 0.9, 'lang' => 'pt_BR', 'name' => 'Brazilian Portuguese', 'direction' => 'ltr'],
'ru' => ['q' => 0.9, 'lang' => 'ru', 'name' => 'Russian', 'direction' => 'ltr'],
'sr-ec' => ['q' => 1, 'lang' => 'sr-ec', 'name' => 'Serbian', 'direction' => 'ltr'],
'es' => ['q' => 1, 'lang' => 'es', 'name' => 'Spanish', 'direction' => 'ltr'],
'sv' => ['q' => 0.8, 'lang' => 'sv', 'name' => 'Swedish', 'direction' => 'ltr'],
'tl' => ['q' => 0.8, 'lang' => 'tl', 'name' => 'Tagalog', 'direction' => 'ltr'],
'ta' => ['q' => 1, 'lang' => 'ta', 'name' => 'Tamil', 'direction' => 'ltr'],
'te' => ['q' => 0.3, 'lang' => 'te', 'name' => 'Telugu', 'direction' => 'ltr'],
'tr' => ['q' => 0.5, 'lang' => 'tr', 'name' => 'Turkish', 'direction' => 'ltr'],
'uk' => ['q' => 1, 'lang' => 'uk', 'name' => 'Ukrainian', 'direction' => 'ltr'],
'hsb' => ['q' => 0.8, 'lang' => 'hsb', 'name' => 'Upper Sorbian', 'direction' => 'ltr'],
'ur' => ['q' => 1, 'lang' => 'ur_PK', 'name' => 'Urdu (Pakistan)', 'direction' => 'rtl'],
'vi' => ['q' => 0.8, 'lang' => 'vi', 'name' => 'Vietnamese', 'direction' => 'ltr'],
];
}