116 lines
4.4 KiB
PHP
116 lines
4.4 KiB
PHP
<?php
|
|
|
|
/**
|
|
* @file
|
|
* Hooks provided by the base system for language support.
|
|
*/
|
|
|
|
/**
|
|
* @addtogroup hooks
|
|
* @{
|
|
*/
|
|
|
|
/**
|
|
* Perform alterations on language switcher links.
|
|
*
|
|
* A language switcher link may need to point to a different path or use a
|
|
* translated link text before going through l(), which will just handle the
|
|
* path aliases.
|
|
*
|
|
* @param $links
|
|
* Nested array of links keyed by language code.
|
|
* @param $type
|
|
* The language type the links will switch.
|
|
* @param $path
|
|
* The current path.
|
|
*/
|
|
function hook_language_switch_links_alter(array &$links, $type, $path) {
|
|
$language_interface = language(\Drupal\Core\Language\Language::TYPE_INTERFACE);
|
|
|
|
if ($type == \Drupal\Core\Language\Language::TYPE_CONTENT && isset($links[$language_interface->id])) {
|
|
foreach ($links[$language_interface->id] as $link) {
|
|
$link['attributes']['class'][] = 'active-language';
|
|
}
|
|
}
|
|
}
|
|
|
|
/**
|
|
* @} End of "addtogroup hooks".
|
|
*/
|
|
|
|
/**
|
|
* @defgroup transliteration Transliteration
|
|
* @{
|
|
* Transliterate from Unicode to US-ASCII
|
|
*
|
|
* Transliteration is the process of translating individual non-US-ASCII
|
|
* characters into ASCII characters, which specifically does not transform
|
|
* non-printable and punctuation characters in any way. This process will always
|
|
* be both inexact and language-dependent. For instance, the character Ö (O with
|
|
* an umlaut) is commonly transliterated as O, but in German text, the
|
|
* convention would be to transliterate it as Oe or OE, depending on the context
|
|
* (beginning of a capitalized word, or in an all-capital letter context).
|
|
*
|
|
* The Drupal default transliteration process transliterates text character by
|
|
* character using a database of generic character transliterations and
|
|
* language-specific overrides. Character context (such as all-capitals
|
|
* vs. initial capital letter only) is not taken into account, and in
|
|
* transliterations of capital letters that result in two or more letters, by
|
|
* convention only the first is capitalized in the Drupal transliteration
|
|
* result. Also, only Unicode characters of 4 bytes or less can be
|
|
* transliterated in the base system; language-specific overrides can be made
|
|
* for longer Unicode characters. So, the process has limitations; however,
|
|
* since the reason for transliteration is typically to create machine names or
|
|
* file names, this should not really be a problem. After transliteration,
|
|
* other transformation or validation may be necessary, such as converting
|
|
* spaces to another character, removing non-printable characters,
|
|
* lower-casing, etc.
|
|
*
|
|
* Here is a code snippet to transliterate some text:
|
|
* @code
|
|
* // Use the current default interface language.
|
|
* $langcode = language(\Drupal\Core\Language\Language::TYPE_INTERFACE)->id;
|
|
* // Instantiate the transliteration class.
|
|
* $trans = \Drupal::transliteration();
|
|
* // Use this to transliterate some text.
|
|
* $transformed = $trans->transliterate($string, $langcode);
|
|
* @endcode
|
|
*
|
|
* Drupal Core provides the generic transliteration character tables and
|
|
* overrides for a few common languages; modules can implement
|
|
* hook_transliteration_overrides_alter() to provide further language-specific
|
|
* overrides (including providing transliteration for Unicode characters that
|
|
* are longer than 4 bytes). Modules can also completely override the
|
|
* transliteration classes in \Drupal\Core\CoreServiceProvider.
|
|
*/
|
|
|
|
/**
|
|
* Provide language-specific overrides for transliteration.
|
|
*
|
|
* If the overrides you want to provide are standard for your language, consider
|
|
* providing a patch for the Drupal Core transliteration system instead of using
|
|
* this hook. This hook can be used temporarily until Drupal Core's
|
|
* transliteration tables are fixed, or for sites that want to use a
|
|
* non-standard transliteration system.
|
|
*
|
|
* @param array $overrides
|
|
* Associative array of language-specific overrides whose keys are integer
|
|
* Unicode character codes, and whose values are the transliterations of those
|
|
* characters in the given language, to override default transliterations.
|
|
* @param string $langcode
|
|
* The code for the language that is being transliterated.
|
|
*
|
|
* @ingroup hooks
|
|
*/
|
|
function hook_transliteration_overrides_alter(&$overrides, $langcode) {
|
|
// Provide special overrides for German for a custom site.
|
|
if ($langcode == 'de') {
|
|
// The core-provided transliteration of Ä is Ae, but we want just A.
|
|
$overrides[0xC4] = 'A';
|
|
}
|
|
}
|
|
|
|
/**
|
|
* @} End of "defgroup transliteration".
|
|
*/
|