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+<?php
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+/*
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+ Copyright (c) 2005 Steven Armstrong <sa at c-area dot ch>
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+
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+ Drop in replacement for native gettext.
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+
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+ This file is part of PHP-gettext.
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+
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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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+
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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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+
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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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+/*
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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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+
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+require('streams.php');
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+require('gettext.php');
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+
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+
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+// Variables
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+
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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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+
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+
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+// Utility functions
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+
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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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+ $p = isset($text_domains[$domain]->path) ? $text_domains[$domain]->path : './';
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+ $path = $p . "$locale/". $LC_CATEGORIES[$category] ."/$domain.mo";
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+ if (file_exists($path)) {
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+ $input = new FileReader($path);
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+ }
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+ else {
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+ $input = null;
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+ }
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+ $text_domains[$domain]->l10n = new gettext_reader($input, $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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+/**
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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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+/**
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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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+/**
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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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+/**
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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 $text;
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+ }
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+}
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+
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+
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+
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+
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+// Custom implementation of the standard gettext related functions
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+
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+/**
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+ * Sets a requested locale, if needed emulates it.
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+ */
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+function _setlocale($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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+ return $CURRENTLOCALE;
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+ }
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+}
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+
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+/**
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+ * Sets the path for a domain.
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+ */
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+function _bindtextdomain($domain, $path) {
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+ global $text_domains;
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+ // ensure $path ends with a slash
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+ if ($path[strlen($path) - 1] != '/') $path .= '/';
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+ elseif ($path[strlen($path) - 1] != '\\') $path .= '\\';
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+ $text_domains[$domain]->path = $path;
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+}
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+
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+/**
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+ * Specify the character encoding in which the messages from the DOMAIN message catalog will be returned.
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+ */
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+function _bind_textdomain_codeset($domain, $codeset) {
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+ global $text_domains;
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+ $text_domains[$domain]->codeset = $codeset;
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+}
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+
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+/**
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+ * Sets the default domain.
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+ */
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+function _textdomain($domain) {
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+ global $default_domain;
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+ $default_domain = $domain;
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+}
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+
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+/**
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+ * Lookup a message in the current domain.
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+ */
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+function _gettext($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, $number));
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+}
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+
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+/**
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+ * Override the current domain.
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+ */
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+function _dgettext($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, $number));
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+}
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+
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+/**
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+ * Overrides the domain and category for a single lookup.
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+ */
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+function _dcgettext($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, $number));
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+}
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+
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+
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+
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+// Wrappers to use if the standard gettext functions are available, but the current locale is not supported by the system.
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+// Use the standard impl if the current locale is supported, use the custom impl otherwise.
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+
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+function T_setlocale($category, $locale) {
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+ return _setlocale($category, $locale);
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+}
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+
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+function T_bindtextdomain($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, $category);
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+}
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+
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+
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+
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+// Wrappers used as a drop in replacement for the standard gettext functions
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+
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+if (!function_exists('gettext')) {
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+ function bindtextdomain($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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+?>
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