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Diffstat (limited to 'src/php-gettext/gettext.inc')
| -rw-r--r-- | src/php-gettext/gettext.inc | 534 |
1 files changed, 534 insertions, 0 deletions
diff --git a/src/php-gettext/gettext.inc b/src/php-gettext/gettext.inc new file mode 100644 index 0000000..399a0f2 --- /dev/null +++ b/src/php-gettext/gettext.inc @@ -0,0 +1,534 @@ +<?php +/* + Copyright (c) 2005 Steven Armstrong <sa at c-area dot ch> + Copyright (c) 2009 Danilo Segan <danilo@kvota.net> + + 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 +*/ + + +// LC_MESSAGES is not available if php-gettext is not loaded +// while the other constants are already available from session extension. +if (!defined('LC_MESSAGES')) { + define('LC_MESSAGES', 5); +} + +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 = ''; + +/* Class to hold a single domain included in $text_domains. */ +class domain { + var $l10n; + var $path; + var $codeset; +} + +// Utility functions + +/** + * Return a list of locales to try for any POSIX-style locale specification. + */ +function get_list_of_locales($locale) { + /* Figure out all possible locale names and start with the most + * specific ones. I.e. for sr_CS.UTF-8@latin, look through all of + * sr_CS.UTF-8@latin, sr_CS@latin, sr@latin, sr_CS.UTF-8, sr_CS, sr. + */ + $locale_names = array(); + $lang = NULL; + $country = NULL; + $charset = NULL; + $modifier = NULL; + if ($locale) { + if (preg_match("/^(?P<lang>[a-z]{2,3})" // language code + ."(?:_(?P<country>[A-Z]{2}))?" // country code + ."(?:\.(?P<charset>[-A-Za-z0-9_]+))?" // charset + ."(?:@(?P<modifier>[-A-Za-z0-9_]+))?$/", // @ modifier + $locale, $matches)) { + + if (isset($matches["lang"])) $lang = $matches["lang"]; + if (isset($matches["country"])) $country = $matches["country"]; + if (isset($matches["charset"])) $charset = $matches["charset"]; + if (isset($matches["modifier"])) $modifier = $matches["modifier"]; + + if ($modifier) { + if ($country) { + if ($charset) + array_push($locale_names, "${lang}_$country.$charset@$modifier"); + array_push($locale_names, "${lang}_$country@$modifier"); + } elseif ($charset) + array_push($locale_names, "${lang}.$charset@$modifier"); + array_push($locale_names, "$lang@$modifier"); + } + if ($country) { + if ($charset) + array_push($locale_names, "${lang}_$country.$charset"); + array_push($locale_names, "${lang}_$country"); + } elseif ($charset) + array_push($locale_names, "${lang}.$charset"); + array_push($locale_names, $lang); + } + + // If the locale name doesn't match POSIX style, just include it as-is. + if (!in_array($locale, $locale_names)) + array_push($locale_names, $locale); + } + return $locale_names; +} + +/** + * Utility function to get a StreamReader for the given text domain. + */ +function _get_reader($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); + $bound_path = isset($text_domains[$domain]->path) ? + $text_domains[$domain]->path : './'; + $subpath = $LC_CATEGORIES[$category] ."/$domain.mo"; + + $locale_names = get_list_of_locales($locale); + $input = null; + foreach ($locale_names as $locale) { + $full_path = $bound_path . $locale . "/" . $subpath; + if (file_exists($full_path)) { + $input = new FileReader($full_path); + break; + } + } + + if (!array_key_exists($domain, $text_domains)) { + // Initialize an empty domain object. + $text_domains[$domain] = new domain(); + } + $text_domains[$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 $EMULATEGETTEXT; +} + +/** + * Checks if the current locale is supported on this system. + */ +function _check_locale_and_function($function=false) { + global $EMULATEGETTEXT; + if ($function and !function_exists($function)) + return false; + return !$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 + +/** + * Returns passed in $locale, or environment variable $LANG if $locale == ''. + */ +function _get_default_locale($locale) { + if ($locale == '') // emulate variable support + return getenv('LANG'); + else + return $locale; +} + +/** + * Sets a requested locale, if needed emulates it. + */ +function _setlocale($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 { + if (function_exists('setlocale')) { + $ret = setlocale($category, $locale); + if (($locale == '' and !$ret) or // failed setting it by env + ($locale != '' and $ret != $locale)) { // failed setting it + // Failed setting it according to environment. + $CURRENTLOCALE = _get_default_locale($locale); + $EMULATEGETTEXT = 1; + } else { + $CURRENTLOCALE = $ret; + $EMULATEGETTEXT = 0; + } + } else { + // No function setlocale(), emulate it all. + $CURRENTLOCALE = _get_default_locale($locale); + $EMULATEGETTEXT = 1; + } + // Allow locale to be changed on the go for one translation domain. + global $text_domains, $default_domain; + unset($text_domains[$default_domain]->l10n); + return $CURRENTLOCALE; + } +} + +/** + * Sets the path for a domain. + */ +function _bindtextdomain($domain, $path) { + global $text_domains; + // ensure $path ends with a slash ('/' should work for both, but lets still play nice) + if (substr(php_uname(), 0, 7) == "Windows") { + if ($path[strlen($path)-1] != '\\' and $path[strlen($path)-1] != '/') + $path .= '\\'; + } else { + if ($path[strlen($path)-1] != '/') + $path .= '/'; + } + if (!array_key_exists($domain, $text_domains)) { + // Initialize an empty domain object. + $text_domains[$domain] = new domain(); + } + $text_domains[$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) { + $l10n = _get_reader(); + return _encode($l10n->translate($msgid)); +} + +/** + * Alias for gettext. + */ +function __($msgid) { + return _gettext($msgid); +} + +/** + * Plural version of gettext. + */ +function _ngettext($single, $plural, $number) { + $l10n = _get_reader(); + return _encode($l10n->ngettext($single, $plural, $number)); +} + +/** + * Override the current domain. + */ +function _dgettext($domain, $msgid) { + $l10n = _get_reader($domain); + return _encode($l10n->translate($msgid)); +} + +/** + * Plural version of dgettext. + */ +function _dngettext($domain, $single, $plural, $number) { + $l10n = _get_reader($domain); + 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, $category); + return _encode($l10n->translate($msgid)); +} +/** + * Plural version of dcgettext. + */ +function _dcngettext($domain, $single, $plural, $number, $category) { + $l10n = _get_reader($domain, $category); + return _encode($l10n->ngettext($single, $plural, $number)); +} + +/** + * Context version of gettext. + */ +function _pgettext($context, $msgid) { + $l10n = _get_reader(); + return _encode($l10n->pgettext($context, $msgid)); +} + +/** + * Override the current domain in a context gettext call. + */ +function _dpgettext($domain, $context, $msgid) { + $l10n = _get_reader($domain); + return _encode($l10n->pgettext($context, $msgid)); +} + +/** + * Overrides the domain and category for a single context-based lookup. + */ +function _dcpgettext($domain, $context, $msgid, $category) { + $l10n = _get_reader($domain, $category); + return _encode($l10n->pgettext($context, $msgid)); +} + +/** + * Context version of ngettext. + */ +function _npgettext($context, $singular, $plural) { + $l10n = _get_reader(); + return _encode($l10n->npgettext($context, $singular, $plural)); +} + +/** + * Override the current domain in a context ngettext call. + */ +function _dnpgettext($domain, $context, $singular, $plural) { + $l10n = _get_reader($domain); + return _encode($l10n->npgettext($context, $singular, $plural)); +} + +/** + * Overrides the domain and category for a plural context-based lookup. + */ +function _dcnpgettext($domain, $context, $singular, $plural, $category) { + $l10n = _get_reader($domain, $category); + return _encode($l10n->npgettext($context, $singular, $plural)); +} + + + +// Wrappers to use if the standard gettext functions are available, +// but the current locale is not supported by the system. +// Use the standard impl if the current locale is supported, use the +// custom impl otherwise. + +function T_setlocale($category, $locale) { + return _setlocale($category, $locale); +} + +function T_bindtextdomain($domain, $path) { + if (_check_locale_and_function()) return bindtextdomain($domain, $path); + else return _bindtextdomain($domain, $path); +} +function T_bind_textdomain_codeset($domain, $codeset) { + // bind_textdomain_codeset is available only in PHP 4.2.0+ + if (_check_locale_and_function('bind_textdomain_codeset')) + return bind_textdomain_codeset($domain, $codeset); + else return _bind_textdomain_codeset($domain, $codeset); +} +function T_textdomain($domain) { + if (_check_locale_and_function()) return textdomain($domain); + else return _textdomain($domain); +} +function T_gettext($msgid) { + if (_check_locale_and_function()) return gettext($msgid); + else return _gettext($msgid); +} +function T_($msgid) { + if (_check_locale_and_function()) return _($msgid); + return __($msgid); +} +function T_ngettext($single, $plural, $number) { + if (_check_locale_and_function()) + return ngettext($single, $plural, $number); + else return _ngettext($single, $plural, $number); +} +function T_dgettext($domain, $msgid) { + if (_check_locale_and_function()) return dgettext($domain, $msgid); + else return _dgettext($domain, $msgid); +} +function T_dngettext($domain, $single, $plural, $number) { + if (_check_locale_and_function()) + return dngettext($domain, $single, $plural, $number); + else return _dngettext($domain, $single, $plural, $number); +} +function T_dcgettext($domain, $msgid, $category) { + if (_check_locale_and_function()) + return dcgettext($domain, $msgid, $category); + else return _dcgettext($domain, $msgid, $category); +} +function T_dcngettext($domain, $single, $plural, $number, $category) { + if (_check_locale_and_function()) + return dcngettext($domain, $single, $plural, $number, $category); + else return _dcngettext($domain, $single, $plural, $number, $category); +} + +function T_pgettext($context, $msgid) { + if (_check_locale_and_function('pgettext')) + return pgettext($context, $msgid); + else + return _pgettext($context, $msgid); +} + +function T_dpgettext($domain, $context, $msgid) { + if (_check_locale_and_function('dpgettext')) + return dpgettext($domain, $context, $msgid); + else + return _dpgettext($domain, $context, $msgid); +} + +function T_dcpgettext($domain, $context, $msgid, $category) { + if (_check_locale_and_function('dcpgettext')) + return dcpgettext($domain, $context, $msgid, $category); + else + return _dcpgettext($domain, $context, $msgid, $category); +} + +function T_npgettext($context, $singular, $plural) { + if (_check_locale_and_function('npgettext')) + return npgettext($context, $single, $plural, $number); + else + return _npgettext($context, $single, $plural, $number); +} + +function T_dnpgettext($domain, $context, $singular, $plural) { + if (_check_locale_and_function('dnpgettext')) + return dnpgettext($domain, $context, $single, $plural, $number); + else + return _dnpgettext($domain, $context, $single, $plural, $number); +} + +function T_dcnpgettext($domain, $context, $singular, $plural, $category) { + if (_check_locale_and_function('dcnpgettext')) + return dcnpgettext($domain, $context, $single, + $plural, $number, $category); + else + return _dcnpgettext($domain, $context, $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, $category); + } + function pgettext($context, $msgid) { + return _pgettext($context, $msgid); + } + function npgettext($context, $single, $plural, $number) { + return _npgettext($context, $single, $plural, $number); + } + function dpgettext($domain, $context, $msgid) { + return _dpgettext($domain, $context, $msgid); + } + function dnpgettext($domain, $context, $single, $plural, $number) { + return _dnpgettext($domain, $context, $single, $plural, $number); + } + function dcpgettext($domain, $context, $msgid, $category) { + return _dcpgettext($domain, $context, $msgid, $category); + } + function dcnpgettext($domain, $context, $single, $plural, + $number, $category) { + return _dcnpgettext($domain, $context, $single, $plural, + $number, $category); + } +} + +?> |