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+<?php
+/*
+ Copyright (c) 2005 Steven Armstrong <sa at c-area dot ch>
+
+ Drop in replacement for native gettext.
+
+ This file is part of PHP-gettext.
+
+ PHP-gettext is free software; you can redistribute it and/or modify
+ it under the terms of the GNU General Public License as published by
+ the Free Software Foundation; either version 2 of the License, or
+ (at your option) any later version.
+
+ PHP-gettext 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 General Public License for more details.
+
+ You should have received a copy of the GNU General Public License
+ along with PHP-gettext; if not, write to the Free Software
+ Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
+
+*/
+/*
+LC_CTYPE 0
+LC_NUMERIC 1
+LC_TIME 2
+LC_COLLATE 3
+LC_MONETARY 4
+LC_MESSAGES 5
+LC_ALL 6
+*/
+
+require('streams.php');
+require('gettext.php');
+
+
+// Variables
+
+global $text_domains, $default_domain, $LC_CATEGORIES, $EMULATEGETTEXT, $CURRENTLOCALE;
+$text_domains = array();
+$default_domain = 'messages';
+$LC_CATEGORIES = array('LC_CTYPE', 'LC_NUMERIC', 'LC_TIME', 'LC_COLLATE', 'LC_MONETARY', 'LC_MESSAGES', 'LC_ALL');
+$EMULATEGETTEXT = 0;
+$CURRENTLOCALE = '';
+
+
+// Utility functions
+
+/**
+ * Utility function to get a StreamReader for the given text domain.
+ */
+function _get_reader($domain=null, $category=5, $enable_cache=true) {
+ global $text_domains, $default_domain, $LC_CATEGORIES;
+ if (!isset($domain)) $domain = $default_domain;
+ if (!isset($text_domains[$domain]->l10n)) {
+ // get the current locale
+ $locale = _setlocale(LC_MESSAGES, 0);
+ $p = isset($text_domains[$domain]->path) ? $text_domains[$domain]->path : './';
+ $path = $p . "$locale/". $LC_CATEGORIES[$category] ."/$domain.mo";
+ if (file_exists($path)) {
+ $input = new FileReader($path);
+ }
+ else {
+ $input = null;
+ }
+ $text_domains[$domain]->l10n = new gettext_reader($input, $enable_cache);
+ }
+ return $text_domains[$domain]->l10n;
+}
+
+/**
+ * Returns whether we are using our emulated gettext API or PHP built-in one.
+ */
+function locale_emulation() {
+ global $EMULATEGETTEXT;
+ return $EMULATEGETTEXT;
+}
+
+/**
+ * Checks if the current locale is supported on this system.
+ */
+function _check_locale() {
+ global $EMULATEGETTEXT;
+ return !$EMULATEGETTEXT;
+}
+
+/**
+ * Get the codeset for the given domain.
+ */
+function _get_codeset($domain=null) {
+ global $text_domains, $default_domain, $LC_CATEGORIES;
+ if (!isset($domain)) $domain = $default_domain;
+ return (isset($text_domains[$domain]->codeset))? $text_domains[$domain]->codeset : ini_get('mbstring.internal_encoding');
+}
+
+/**
+ * Convert the given string to the encoding set by bind_textdomain_codeset.
+ */
+function _encode($text) {
+ $source_encoding = mb_detect_encoding($text);
+ $target_encoding = _get_codeset();
+ if ($source_encoding != $target_encoding) {
+ return mb_convert_encoding($text, $target_encoding, $source_encoding);
+ }
+ else {
+ return $text;
+ }
+}
+
+
+
+
+// Custom implementation of the standard gettext related functions
+
+/**
+ * Sets a requested locale, if needed emulates it.
+ */
+function _setlocale($category, $locale) {
+ global $CURRENTLOCALE, $EMULATEGETTEXT;
+ if ($locale === 0) { // use === to differentiate between string "0"
+ if ($CURRENTLOCALE != '')
+ return $CURRENTLOCALE;
+ else
+ // obey LANG variable, maybe extend to support all of LC_* vars
+ // even if we tried to read locale without setting it first
+ return _setlocale($category, $CURRENTLOCALE);
+ } else {
+ $ret = 0;
+ if (function_exists('setlocale')) // I don't know if this ever happens ;)
+ $ret = setlocale($category, $locale);
+ if (($ret and $locale == '') or ($ret == $locale)) {
+ $EMULATEGETTEXT = 0;
+ $CURRENTLOCALE = $ret;
+ } else {
+ if ($locale == '') // emulate variable support
+ $CURRENTLOCALE = getenv('LANG');
+ else
+ $CURRENTLOCALE = $locale;
+ $EMULATEGETTEXT = 1;
+ }
+ return $CURRENTLOCALE;
+ }
+}
+
+/**
+ * Sets the path for a domain.
+ */
+function _bindtextdomain($domain, $path) {
+ global $text_domains;
+ // ensure $path ends with a slash
+ if ($path[strlen($path) - 1] != '/') $path .= '/';
+ elseif ($path[strlen($path) - 1] != '\\') $path .= '\\';
+ $text_domains[$domain]->path = $path;
+}
+
+/**
+ * Specify the character encoding in which the messages from the DOMAIN message catalog will be returned.
+ */
+function _bind_textdomain_codeset($domain, $codeset) {
+ global $text_domains;
+ $text_domains[$domain]->codeset = $codeset;
+}
+
+/**
+ * Sets the default domain.
+ */
+function _textdomain($domain) {
+ global $default_domain;
+ $default_domain = $domain;
+}
+
+/**
+ * Lookup a message in the current domain.
+ */
+function _gettext($msgid) {
+ $l10n = _get_reader();
+ //return $l10n->translate($msgid);
+ return _encode($l10n->translate($msgid));
+}
+/**
+ * Alias for gettext.
+ */
+function __($msgid) {
+ return _gettext($msgid);
+}
+/**
+ * Plural version of gettext.
+ */
+function _ngettext($single, $plural, $number) {
+ $l10n = _get_reader();
+ //return $l10n->ngettext($single, $plural, $number);
+ return _encode($l10n->ngettext($single, $plural, $number));
+}
+
+/**
+ * Override the current domain.
+ */
+function _dgettext($domain, $msgid) {
+ $l10n = _get_reader($domain);
+ //return $l10n->translate($msgid);
+ return _encode($l10n->translate($msgid));
+}
+/**
+ * Plural version of dgettext.
+ */
+function _dngettext($domain, $single, $plural, $number) {
+ $l10n = _get_reader($domain);
+ //return $l10n->ngettext($single, $plural, $number);
+ return _encode($l10n->ngettext($single, $plural, $number));
+}
+
+/**
+ * Overrides the domain and category for a single lookup.
+ */
+function _dcgettext($domain, $msgid, $category) {
+ $l10n = _get_reader($domain, $category);
+ //return $l10n->translate($msgid);
+ return _encode($l10n->translate($msgid));
+}
+/**
+ * Plural version of dcgettext.
+ */
+function _dcngettext($domain, $single, $plural, $number, $category) {
+ $l10n = _get_reader($domain, $category);
+ //return $l10n->ngettext($single, $plural, $number);
+ return _encode($l10n->ngettext($single, $plural, $number));
+}
+
+
+
+// Wrappers to use if the standard gettext functions are available, but the current locale is not supported by the system.
+// Use the standard impl if the current locale is supported, use the custom impl otherwise.
+
+function T_setlocale($category, $locale) {
+ return _setlocale($category, $locale);
+}
+
+function T_bindtextdomain($domain, $path) {
+ if (_check_locale()) return bindtextdomain($domain, $path);
+ else return _bindtextdomain($domain, $path);
+}
+function T_bind_textdomain_codeset($domain, $codeset) {
+ // bind_textdomain_codeset is available only in PHP 4.2.0+
+ if (_check_locale() and function_exists('bind_textdomain_codeset')) return bind_textdomain_codeset($domain, $codeset);
+ else return _bind_textdomain_codeset($domain, $codeset);
+}
+function T_textdomain($domain) {
+ if (_check_locale()) return textdomain($domain);
+ else return _textdomain($domain);
+}
+function T_gettext($msgid) {
+ if (_check_locale()) return gettext($msgid);
+ else return _gettext($msgid);
+}
+function T_($msgid) {
+ if (_check_locale()) return _($msgid);
+ return __($msgid);
+}
+function T_ngettext($single, $plural, $number) {
+ if (_check_locale()) return ngettext($single, $plural, $number);
+ else return _ngettext($single, $plural, $number);
+}
+function T_dgettext($domain, $msgid) {
+ if (_check_locale()) return dgettext($domain, $msgid);
+ else return _dgettext($domain, $msgid);
+}
+function T_dngettext($domain, $single, $plural, $number) {
+ if (_check_locale()) return dngettext($domain, $single, $plural, $number);
+ else return _dngettext($domain, $single, $plural, $number);
+}
+function T_dcgettext($domain, $msgid, $category) {
+ if (_check_locale()) return dcgettext($domain, $msgid, $category);
+ else return _dcgettext($domain, $msgid, $category);
+}
+function T_dcngettext($domain, $single, $plural, $number, $category) {
+ if (_check_locale()) return dcngettext($domain, $single, $plural, $number, $category);
+ else return _dcngettext($domain, $single, $plural, $number, $category);
+}
+
+
+
+// Wrappers used as a drop in replacement for the standard gettext functions
+
+if (!function_exists('gettext')) {
+ function bindtextdomain($domain, $path) {
+ return _bindtextdomain($domain, $path);
+ }
+ function bind_textdomain_codeset($domain, $codeset) {
+ return _bind_textdomain_codeset($domain, $codeset);
+ }
+ function textdomain($domain) {
+ return _textdomain($domain);
+ }
+ function gettext($msgid) {
+ return _gettext($msgid);
+ }
+ function _($msgid) {
+ return __($msgid);
+ }
+ function ngettext($single, $plural, $number) {
+ return _ngettext($single, $plural, $number);
+ }
+ function dgettext($domain, $msgid) {
+ return _dgettext($domain, $msgid);
+ }
+ function dngettext($domain, $single, $plural, $number) {
+ return _dngettext($domain, $single, $plural, $number);
+ }
+ function dcgettext($domain, $msgid, $category) {
+ return _dcgettext($domain, $msgid, $category);
+ }
+ function dcngettext($domain, $single, $plural, $number, $category) {
+ return _dcngettext($domain, $single, $plural, $number, $category);
+ }
+}
+
+?> \ No newline at end of file