375 lines
12 KiB
PHP
375 lines
12 KiB
PHP
<?php
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/*
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Copyright (c) 2005 Steven Armstrong <sa at c-area dot ch>
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Copyright (c) 2009 Danilo Segan <danilo@kvota.net>
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Drop in replacement for native gettext.
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This file is part of PHP-gettext.
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PHP-gettext is free software; you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation; either version 2 of the License, or
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(at your option) any later version.
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PHP-gettext is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with PHP-gettext; if not, write to the Free Software
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Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
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*/
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/*
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LC_CTYPE 0
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LC_NUMERIC 1
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LC_TIME 2
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LC_COLLATE 3
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LC_MONETARY 4
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LC_MESSAGES 5
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LC_ALL 6
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*/
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// LC_MESSAGES is not available if php-gettext is not loaded
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// while the other constants are already available from session extension.
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if (!defined('LC_MESSAGES')) {
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define('LC_MESSAGES', 5);
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}
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require('streams.php');
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require('gettext.php');
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// Variables
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global $text_domains, $default_domain, $LC_CATEGORIES, $EMULATEGETTEXT, $CURRENTLOCALE;
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$text_domains = array();
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$default_domain = 'messages';
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$LC_CATEGORIES = array('LC_CTYPE', 'LC_NUMERIC', 'LC_TIME', 'LC_COLLATE', 'LC_MONETARY', 'LC_MESSAGES', 'LC_ALL');
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$EMULATEGETTEXT = 0;
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$CURRENTLOCALE = '';
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/* Class to hold a single domain included in $text_domains. */
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class domain {
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var $l10n;
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var $path;
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var $codeset;
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}
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// Utility functions
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/**
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* Utility function to get a StreamReader for the given text domain.
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*/
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function _get_reader($domain=null, $category=5, $enable_cache=true) {
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global $text_domains, $default_domain, $LC_CATEGORIES;
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if (!isset($domain)) $domain = $default_domain;
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if (!isset($text_domains[$domain]->l10n)) {
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// get the current locale
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$locale = _setlocale(LC_MESSAGES, 0);
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$bound_path = isset($text_domains[$domain]->path) ?
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$text_domains[$domain]->path : './';
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$subpath = $LC_CATEGORIES[$category] ."/$domain.mo";
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/* Figure out all possible locale names and start with the most
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specific ones. I.e. for sr_CS.UTF-8@latin, look through all of
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sr_CS.UTF-8@latin, sr_CS@latin, sr@latin, sr_CS.UTF-8, sr_CS, sr.
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*/
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$locale_names = array();
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if (preg_match("/([a-z]{2,3})" // language code
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."(_([A-Z]{2}))?" // country code
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."(\.([-A-Za-z0-9_]))?" // charset
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."(@([-A-Za-z0-9_]+))?/", // @ modifier
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$locale, $matches)) {
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list(,$lang,,$country,,$charset,,$modifier) = $matches;
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if ($modifier) {
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$locale_names = array("${lang}_$country.$charset@$modifier",
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"${lang}_$country@$modifier",
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"$lang@$modifier");
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}
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array_push($locale_names,
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"${lang}_$country.$charset", "${lang}_$country", "$lang");
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}
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array_push($locale_names, $locale);
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$input = null;
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foreach ($locale_names as $locale) {
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$full_path = $bound_path . $locale . "/" . $subpath;
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if (file_exists($full_path)) {
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$input = new FileReader($full_path);
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break;
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}
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}
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if (!array_key_exists($domain, $text_domains)) {
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// Initialize an empty domain object.
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$text_domains[$domain] = new domain();
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}
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$text_domains[$domain]->l10n = new gettext_reader($input,
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$enable_cache);
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}
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return $text_domains[$domain]->l10n;
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}
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/**
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* Returns whether we are using our emulated gettext API or PHP built-in one.
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*/
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function locale_emulation() {
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global $EMULATEGETTEXT;
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return $EMULATEGETTEXT;
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}
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/**
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* Checks if the current locale is supported on this system.
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*/
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function _check_locale() {
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global $EMULATEGETTEXT;
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return !$EMULATEGETTEXT;
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}
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/**
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* Get the codeset for the given domain.
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*/
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function _get_codeset($domain=null) {
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global $text_domains, $default_domain, $LC_CATEGORIES;
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if (!isset($domain)) $domain = $default_domain;
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return (isset($text_domains[$domain]->codeset))? $text_domains[$domain]->codeset : ini_get('mbstring.internal_encoding');
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}
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/**
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* Convert the given string to the encoding set by bind_textdomain_codeset.
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*/
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function _encode($text) {
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$source_encoding = mb_detect_encoding($text);
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$target_encoding = _get_codeset();
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if ($source_encoding != $target_encoding) {
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return mb_convert_encoding($text, $target_encoding, $source_encoding);
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}
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else {
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return $text;
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}
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}
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// Custom implementation of the standard gettext related functions
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/**
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* Sets a requested locale, if needed emulates it.
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*/
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function _setlocale($category, $locale) {
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global $CURRENTLOCALE, $EMULATEGETTEXT;
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if ($locale === 0) { // use === to differentiate between string "0"
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if ($CURRENTLOCALE != '')
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return $CURRENTLOCALE;
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else
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// obey LANG variable, maybe extend to support all of LC_* vars
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// even if we tried to read locale without setting it first
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return _setlocale($category, $CURRENTLOCALE);
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} else {
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$ret = 0;
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if (function_exists('setlocale')) // I don't know if this ever happens ;)
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$ret = setlocale($category, $locale);
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if (($ret and $locale == '') or ($ret == $locale)) {
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$EMULATEGETTEXT = 0;
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$CURRENTLOCALE = $ret;
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} else {
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if ($locale == '') // emulate variable support
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$CURRENTLOCALE = getenv('LANG');
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else
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$CURRENTLOCALE = $locale;
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$EMULATEGETTEXT = 1;
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}
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// Allow locale to be changed on the go for one translation domain.
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global $text_domains, $default_domain;
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unset($text_domains[$default_domain]->l10n);
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return $CURRENTLOCALE;
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}
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}
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/**
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* Sets the path for a domain.
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*/
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function _bindtextdomain($domain, $path) {
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global $text_domains;
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// ensure $path ends with a slash ('/' should work for both, but lets still play nice)
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if (substr(php_uname(), 0, 7) == "Windows") {
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if ($path[strlen($path)-1] != '\\' and $path[strlen($path)-1] != '/')
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$path .= '\\';
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} else {
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if ($path[strlen($path)-1] != '/')
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$path .= '/';
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}
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if (!array_key_exists($domain, $text_domains)) {
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// Initialize an empty domain object.
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$text_domains[$domain] = new domain();
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}
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$text_domains[$domain]->path = $path;
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}
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/**
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* Specify the character encoding in which the messages from the DOMAIN message catalog will be returned.
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*/
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function _bind_textdomain_codeset($domain, $codeset) {
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global $text_domains;
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$text_domains[$domain]->codeset = $codeset;
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}
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/**
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* Sets the default domain.
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*/
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function _textdomain($domain) {
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global $default_domain;
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$default_domain = $domain;
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}
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/**
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* Lookup a message in the current domain.
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*/
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function _gettext($msgid) {
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$l10n = _get_reader();
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//return $l10n->translate($msgid);
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return _encode($l10n->translate($msgid));
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}
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/**
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* Alias for gettext.
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*/
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function __($msgid) {
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return _gettext($msgid);
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}
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/**
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* Plural version of gettext.
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*/
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function _ngettext($single, $plural, $number) {
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$l10n = _get_reader();
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//return $l10n->ngettext($single, $plural, $number);
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return _encode($l10n->ngettext($single, $plural, $number));
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}
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/**
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* Override the current domain.
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*/
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function _dgettext($domain, $msgid) {
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$l10n = _get_reader($domain);
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//return $l10n->translate($msgid);
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return _encode($l10n->translate($msgid));
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}
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/**
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* Plural version of dgettext.
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*/
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function _dngettext($domain, $single, $plural, $number) {
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$l10n = _get_reader($domain);
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//return $l10n->ngettext($single, $plural, $number);
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return _encode($l10n->ngettext($single, $plural, $number));
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}
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/**
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* Overrides the domain and category for a single lookup.
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*/
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function _dcgettext($domain, $msgid, $category) {
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$l10n = _get_reader($domain, $category);
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//return $l10n->translate($msgid);
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return _encode($l10n->translate($msgid));
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}
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/**
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* Plural version of dcgettext.
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*/
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function _dcngettext($domain, $single, $plural, $number, $category) {
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$l10n = _get_reader($domain, $category);
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//return $l10n->ngettext($single, $plural, $number);
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return _encode($l10n->ngettext($single, $plural, $number));
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}
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// Wrappers to use if the standard gettext functions are available, but the current locale is not supported by the system.
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// Use the standard impl if the current locale is supported, use the custom impl otherwise.
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function T_setlocale($category, $locale) {
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return _setlocale($category, $locale);
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}
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function T_bindtextdomain($domain, $path) {
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if (_check_locale()) return bindtextdomain($domain, $path);
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else return _bindtextdomain($domain, $path);
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}
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function T_bind_textdomain_codeset($domain, $codeset) {
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// bind_textdomain_codeset is available only in PHP 4.2.0+
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if (_check_locale() and function_exists('bind_textdomain_codeset')) return bind_textdomain_codeset($domain, $codeset);
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else return _bind_textdomain_codeset($domain, $codeset);
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}
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function T_textdomain($domain) {
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if (_check_locale()) return textdomain($domain);
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else return _textdomain($domain);
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}
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function T_gettext($msgid) {
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if (_check_locale()) return gettext($msgid);
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else return _gettext($msgid);
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}
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function T_($msgid) {
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if (_check_locale()) return _($msgid);
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return __($msgid);
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}
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function T_ngettext($single, $plural, $number) {
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if (_check_locale()) return ngettext($single, $plural, $number);
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else return _ngettext($single, $plural, $number);
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}
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function T_dgettext($domain, $msgid) {
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if (_check_locale()) return dgettext($domain, $msgid);
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else return _dgettext($domain, $msgid);
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}
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function T_dngettext($domain, $single, $plural, $number) {
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if (_check_locale()) return dngettext($domain, $single, $plural, $number);
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else return _dngettext($domain, $single, $plural, $number);
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}
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function T_dcgettext($domain, $msgid, $category) {
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if (_check_locale()) return dcgettext($domain, $msgid, $category);
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else return _dcgettext($domain, $msgid, $category);
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}
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function T_dcngettext($domain, $single, $plural, $number, $category) {
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if (_check_locale()) return dcngettext($domain, $single, $plural, $number, $category);
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else return _dcngettext($domain, $single, $plural, $number, $category);
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}
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// Wrappers used as a drop in replacement for the standard gettext functions
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if (!function_exists('gettext')) {
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function bindtextdomain($domain, $path) {
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return _bindtextdomain($domain, $path);
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}
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function bind_textdomain_codeset($domain, $codeset) {
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return _bind_textdomain_codeset($domain, $codeset);
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}
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function textdomain($domain) {
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return _textdomain($domain);
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}
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function gettext($msgid) {
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return _gettext($msgid);
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}
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function _($msgid) {
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return __($msgid);
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}
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function ngettext($single, $plural, $number) {
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return _ngettext($single, $plural, $number);
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}
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function dgettext($domain, $msgid) {
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return _dgettext($domain, $msgid);
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}
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function dngettext($domain, $single, $plural, $number) {
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return _dngettext($domain, $single, $plural, $number);
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}
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function dcgettext($domain, $msgid, $category) {
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return _dcgettext($domain, $msgid, $category);
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}
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function dcngettext($domain, $single, $plural, $number, $category) {
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return _dcngettext($domain, $single, $plural, $number, $category);
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}
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}
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?>
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