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2c52c876de
git-svn-id: http://svn.automattic.com/wordpress/trunk@13304 1a063a9b-81f0-0310-95a4-ce76da25c4cd
493 lines
15 KiB
PHP
493 lines
15 KiB
PHP
<?php
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/**
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* WordPress Translation API
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*
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* @package WordPress
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* @subpackage i18n
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*/
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/**
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* Gets the current locale.
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*
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* If the locale is set, then it will filter the locale in the 'locale' filter
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* hook and return the value.
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*
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* If the locale is not set already, then the WPLANG constant is used if it is
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* defined. Then it is filtered through the 'locale' filter hook and the value
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* for the locale global set and the locale is returned.
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*
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* The process to get the locale should only be done once but the locale will
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* always be filtered using the 'locale' hook.
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*
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* @since 1.5.0
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* @uses apply_filters() Calls 'locale' hook on locale value.
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* @uses $locale Gets the locale stored in the global.
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*
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* @return string The locale of the blog or from the 'locale' hook.
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*/
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function get_locale() {
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global $locale;
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if ( isset( $locale ) )
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return apply_filters( 'locale', $locale );
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// WPLANG is defined in wp-config.
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if ( defined( 'WPLANG' ) )
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$locale = WPLANG;
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// If multisite, check options.
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if ( is_multisite() && !defined('WP_INSTALLING') ) {
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$ms_locale = get_option('WPLANG');
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if ( $ms_locale === false )
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$ms_locale = get_site_option('WPLANG');
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if ( $ms_locale !== false )
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$locale = $ms_locale;
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}
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if ( empty( $locale ) )
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$locale = 'en_US';
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return apply_filters( 'locale', $locale );
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}
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/**
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* Retrieves the translation of $text. If there is no translation, or
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* the domain isn't loaded the original text is returned.
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*
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* @see __() Don't use translate() directly, use __()
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* @since 2.2.0
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* @uses apply_filters() Calls 'gettext' on domain translated text
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* with the untranslated text as second parameter.
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*
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* @param string $text Text to translate.
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* @param string $domain Domain to retrieve the translated text.
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* @return string Translated text
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*/
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function translate( $text, $domain = 'default' ) {
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$translations = &get_translations_for_domain( $domain );
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return apply_filters( 'gettext', $translations->translate( $text ), $text, $domain );
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}
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function before_last_bar( $string ) {
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$last_bar = strrpos( $string, '|' );
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if ( false == $last_bar )
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return $string;
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else
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return substr( $string, 0, $last_bar );
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}
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function translate_with_gettext_context( $text, $context, $domain = 'default' ) {
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$translations = &get_translations_for_domain( $domain );
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return apply_filters( 'gettext_with_context', $translations->translate( $text, $context ), $text, $context, $domain );
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}
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/**
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* Retrieves the translation of $text. If there is no translation, or
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* the domain isn't loaded the original text is returned.
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*
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* @see translate() An alias of translate()
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* @since 2.1.0
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*
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* @param string $text Text to translate
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* @param string $domain Optional. Domain to retrieve the translated text
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* @return string Translated text
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*/
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function __( $text, $domain = 'default' ) {
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return translate( $text, $domain );
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}
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/**
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* Retrieves the translation of $text and escapes it for safe use in an attribute.
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* If there is no translation, or the domain isn't loaded the original text is returned.
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*
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* @see translate() An alias of translate()
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* @see esc_attr()
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* @since 2.8.0
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*
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* @param string $text Text to translate
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* @param string $domain Optional. Domain to retrieve the translated text
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* @return string Translated text
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*/
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function esc_attr__( $text, $domain = 'default' ) {
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return esc_attr( translate( $text, $domain ) );
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}
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/**
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* Retrieves the translation of $text and escapes it for safe use in HTML output.
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* If there is no translation, or the domain isn't loaded the original text is returned.
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*
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* @see translate() An alias of translate()
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* @see esc_html()
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* @since 2.8.0
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*
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* @param string $text Text to translate
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* @param string $domain Optional. Domain to retrieve the translated text
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* @return string Translated text
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*/
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function esc_html__( $text, $domain = 'default' ) {
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return esc_html( translate( $text, $domain ) );
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}
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/**
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* Displays the returned translated text from translate().
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*
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* @see translate() Echoes returned translate() string
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* @since 1.2.0
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*
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* @param string $text Text to translate
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* @param string $domain Optional. Domain to retrieve the translated text
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*/
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function _e( $text, $domain = 'default' ) {
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echo translate( $text, $domain );
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}
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/**
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* Displays translated text that has been escaped for safe use in an attribute.
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*
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* @see translate() Echoes returned translate() string
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* @see esc_attr()
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* @since 2.8.0
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*
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* @param string $text Text to translate
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* @param string $domain Optional. Domain to retrieve the translated text
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*/
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function esc_attr_e( $text, $domain = 'default' ) {
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echo esc_attr( translate( $text, $domain ) );
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}
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/**
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* Displays translated text that has been escaped for safe use in HTML output.
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*
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* @see translate() Echoes returned translate() string
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* @see esc_html()
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* @since 2.8.0
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*
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* @param string $text Text to translate
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* @param string $domain Optional. Domain to retrieve the translated text
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*/
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function esc_html_e( $text, $domain = 'default' ) {
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echo esc_html( translate( $text, $domain ) );
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}
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/**
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* Retrieve translated string with gettext context
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*
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* Quite a few times, there will be collisions with similar translatable text
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* found in more than two places but with different translated context.
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*
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* By including the context in the pot file translators can translate the two
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* string differently.
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*
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* @since 2.8.0
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*
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* @param string $text Text to translate
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* @param string $context Context information for the translators
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* @param string $domain Optional. Domain to retrieve the translated text
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* @return string Translated context string without pipe
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*/
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function _x( $single, $context, $domain = 'default' ) {
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return translate_with_gettext_context( $single, $context, $domain );
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}
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function esc_attr_x( $single, $context, $domain = 'default' ) {
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return esc_attr( translate_with_gettext_context( $single, $context, $domain ) );
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}
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function esc_html_x( $single, $context, $domain = 'default' ) {
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return esc_html( translate_with_gettext_context( $single, $context, $domain ) );
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}
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/**
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* Retrieve the plural or single form based on the amount.
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*
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* If the domain is not set in the $l10n list, then a comparison will be made
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* and either $plural or $single parameters returned.
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*
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* If the domain does exist, then the parameters $single, $plural, and $number
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* will first be passed to the domain's ngettext method. Then it will be passed
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* to the 'ngettext' filter hook along with the same parameters. The expected
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* type will be a string.
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*
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* @since 2.8.0
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* @uses $l10n Gets list of domain translated string (gettext_reader) objects
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* @uses apply_filters() Calls 'ngettext' hook on domains text returned,
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* along with $single, $plural, and $number parameters. Expected to return string.
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*
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* @param string $single The text that will be used if $number is 1
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* @param string $plural The text that will be used if $number is not 1
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* @param int $number The number to compare against to use either $single or $plural
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* @param string $domain Optional. The domain identifier the text should be retrieved in
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* @return string Either $single or $plural translated text
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*/
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function _n( $single, $plural, $number, $domain = 'default' ) {
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$translations = &get_translations_for_domain( $domain );
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$translation = $translations->translate_plural( $single, $plural, $number );
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return apply_filters( 'ngettext', $translation, $single, $plural, $number, $domain );
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}
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/**
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* A hybrid of _n() and _x(). It supports contexts and plurals.
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*
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* @see _n()
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* @see _x()
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*
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*/
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function _nx($single, $plural, $number, $context, $domain = 'default') {
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$translations = &get_translations_for_domain( $domain );
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$translation = $translations->translate_plural( $single, $plural, $number, $context );
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return apply_filters( 'ngettext_with_context', $translation, $single, $plural, $number, $context, $domain );
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}
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/**
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* Register plural strings in POT file, but don't translate them.
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*
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* Used when you want do keep structures with translatable plural strings and
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* use them later.
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*
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* Example:
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* $messages = array(
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* 'post' => _n_noop('%s post', '%s posts'),
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* 'page' => _n_noop('%s pages', '%s pages')
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* );
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* ...
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* $message = $messages[$type];
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* $usable_text = sprintf(_n($message[0], $message[1], $count), $count);
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*
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* @since 2.5
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* @param $single Single form to be i18ned
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* @param $plural Plural form to be i18ned
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* @return array array($single, $plural)
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*/
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function _n_noop( $single, $plural ) {
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return array( $single, $plural );
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}
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/**
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* Register plural strings with context in POT file, but don't translate them.
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*
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* @see _n_noop()
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*/
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function _nx_noop( $single, $plural, $context ) {
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return array( $single, $plural, $context );
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}
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/**
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* Loads a MO file into the domain $domain.
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*
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* If the domain already exists, the translations will be merged. If both
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* sets have the same string, the translation from the original value will be taken.
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*
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* On success, the .mo file will be placed in the $l10n global by $domain
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* and will be a MO object.
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*
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* @since 1.5.0
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* @uses $l10n Gets list of domain translated string objects
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*
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* @param string $domain Unique identifier for retrieving translated strings
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* @param string $mofile Path to the .mo file
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* @return bool true on success, false on failure
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*/
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function load_textdomain( $domain, $mofile ) {
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global $l10n;
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$plugin_override = apply_filters( 'override_load_textdomain', false, $domain, $mofile );
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if ( true == $plugin_override ) {
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return true;
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}
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do_action( 'load_textdomain', $domain, $mofile );
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$mofile = apply_filters( 'load_textdomain_mofile', $mofile, $domain );
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if ( !is_readable( $mofile ) ) return false;
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$mo = new MO();
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if ( !$mo->import_from_file( $mofile ) ) return false;
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if ( isset( $l10n[$domain] ) )
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$mo->merge_with( $l10n[$domain] );
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$l10n[$domain] = &$mo;
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return true;
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}
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/**
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* Loads default translated strings based on locale.
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*
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* Loads the .mo file in WP_LANG_DIR constant path from WordPress root. The
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* translated (.mo) file is named based off of the locale.
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*
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* @since 1.5.0
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*/
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function load_default_textdomain() {
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$locale = get_locale();
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$mofile = WP_LANG_DIR . "/$locale.mo";
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return load_textdomain( 'default', $mofile );
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}
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/**
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* Loads the plugin's translated strings.
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*
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* If the path is not given then it will be the root of the plugin directory.
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* The .mo file should be named based on the domain with a dash, and then the locale exactly.
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*
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* @since 1.5.0
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*
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* @param string $domain Unique identifier for retrieving translated strings
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* @param string $abs_rel_path Optional. Relative path to ABSPATH of a folder,
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* where the .mo file resides. Deprecated, but still functional until 2.7
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* @param string $plugin_rel_path Optional. Relative path to WP_PLUGIN_DIR. This is the preferred argument to use. It takes precendence over $abs_rel_path
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*/
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function load_plugin_textdomain( $domain, $abs_rel_path = false, $plugin_rel_path = false ) {
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$locale = get_locale();
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if ( false !== $plugin_rel_path ) {
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$path = WP_PLUGIN_DIR . '/' . trim( $plugin_rel_path, '/' );
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} else if ( false !== $abs_rel_path ) {
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_deprecated_argument( __FUNCTION__, '2.7' );
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$path = ABSPATH . trim( $abs_rel_path, '/' );
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} else {
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$path = WP_PLUGIN_DIR;
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}
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$mofile = $path . '/'. $domain . '-' . $locale . '.mo';
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return load_textdomain( $domain, $mofile );
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}
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/**
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* Load the translated strings for a plugin residing in the mu-plugins dir.
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*
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* @since 3.0
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*
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* @param string $domain Unique identifier for retrieving translated strings
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*/
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function load_muplugin_textdomain($domain, $path = false) {
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$locale = get_locale();
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if ( empty($locale) )
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$locale = 'en_US';
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/* @todo $path is not used. Was it ever used and was it expected to be an arbitrary absolute dir?
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* Ideally, it should be relative to WPMU_PLUGIN_DUR.
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if ( false === $path )
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$path = WPMU_PLUGIN_DIR;
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*/
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$mofile = WPMU_PLUGIN_DIR . "/$domain-$locale.mo";
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load_textdomain($domain, $mofile);
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}
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/**
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* Loads the theme's translated strings.
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*
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* If the current locale exists as a .mo file in the theme's root directory, it
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* will be included in the translated strings by the $domain.
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*
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* The .mo files must be named based on the locale exactly.
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*
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* @since 1.5.0
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*
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* @param string $domain Unique identifier for retrieving translated strings
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*/
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function load_theme_textdomain($domain, $path = false) {
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$locale = get_locale();
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$path = ( empty( $path ) ) ? get_template_directory() : $path;
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$mofile = "$path/$locale.mo";
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return load_textdomain($domain, $mofile);
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}
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/**
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* Loads the child themes translated strings.
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*
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* If the current locale exists as a .mo file in the child themes root directory, it
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* will be included in the translated strings by the $domain.
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*
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* The .mo files must be named based on the locale exactly.
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*
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* @since 2.9.0
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*
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* @param string $domain Unique identifier for retrieving translated strings
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*/
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function load_child_theme_textdomain($domain, $path = false) {
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$locale = get_locale();
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$path = ( empty( $path ) ) ? get_stylesheet_directory() : $path;
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$mofile = "$path/$locale.mo";
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return load_textdomain($domain, $mofile);
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}
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/**
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* Returns the Translations instance for a domain. If there isn't one,
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* returns empty Translations instance.
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*
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* @param string $domain
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* @return object A Translation instance
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*/
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function &get_translations_for_domain( $domain ) {
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global $l10n;
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if ( !isset( $l10n[$domain] ) ) {
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$l10n[$domain] = &new NOOP_Translations;
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}
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return $l10n[$domain];
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}
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/**
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* Whether there are translations for the domain
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*
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* @since 3.0.0
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* @param string $domain
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* @return bool Whether there are translations
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*/
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function is_textdomain_loaded( $domain ) {
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global $l10n;
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return isset( $l10n[$domain] );
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}
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/**
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* Translates role name. Since the role names are in the database and
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* not in the source there are dummy gettext calls to get them into the POT
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* file and this function properly translates them back.
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*
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* The before_last_bar() call is needed, because older installs keep the roles
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* using the old context format: 'Role name|User role' and just skipping the
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* content after the last bar is easier than fixing them in the DB. New installs
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* won't suffer from that problem.
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*/
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function translate_user_role( $name ) {
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return translate_with_gettext_context( before_last_bar($name), 'User role' );
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}
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/**
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* Get all available languages based on the presence of *.mo files in a given directory. The default directory is WP_LANG_DIR.
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*
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* @since 3.0.0
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*
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* @param string $dir A directory in which to search for language files. The default directory is WP_LANG_DIR.
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* @return array Array of language codes or an empty array if no languages are present. Language codes are formed by stripping the .mo extension from the language file names.
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*/
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function get_available_languages( $dir = null ) {
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$languages = array();
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if ( empty($dir) )
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$dir = WP_LANG_DIR;
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if ( is_dir( $dir ) && $dh = opendir( $dir ) ) {
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while ( ( $lang_file = readdir( $dh ) ) !== false ) {
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if ( substr( $lang_file, -3 ) == '.mo' && ( false === strpos( $lang_file, 'continents-cities' ) ) )
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$languages[] = basename($lang_file, '.mo');
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}
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closedir($dh);
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}
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return $languages;
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}
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?>
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