/**
* {@inheritdoc}
*/
public function getPathByAlias($alias, $langcode = NULL)
{
// If no language is explicitly specified we default to the current URL
// language. If we used a language different from the one conveyed by the
// requested URL, we might end up being unable to check if there is a path
// alias matching the URL path.
$langcode = $langcode ?: $this->languageManager->getCurrentLanguage(LanguageInterface::TYPE_URL)->getId();
// If we already know that there are no paths for this alias simply return.
if (empty($alias) || !empty($this->noPath[$langcode][$alias])) {
return $alias;
}
// Look for the alias within the cached map.
if (isset($this->lookupMap[$langcode]) && ($path = array_search($alias, $this->lookupMap[$langcode]))) {
return $path;
}
// Look for path in storage.
if ($path = $this->storage->lookupPathSource($alias, $langcode)) {
$this->lookupMap[$langcode][$path] = $alias;
$this->cacheNeedsWriting = TRUE;
return $path;
}
// We can't record anything into $this->lookupMap because we didn't find any
// paths for this alias. Thus cache to $this->noPath.
$this->noPath[$langcode][$alias] = TRUE;
return $alias;
}
protected function lookup($type, $lookup, $langcode = null)
{
if (self::SOURCE !== $type) {
// Exclude all admin paths
if ($this->excludeAdminPath && path_is_admin($lookup)) {
return $lookup;
}
// Also check for whitelist
if (false !== $this->whitelist && !isset($this->whitelist[strtok($lookup, '/')])) {
return $lookup;
}
}
if (!$langcode) {
$langcode = $GLOBALS['language']->getId();
}
// Compute cache key lookup
if (self::SOURCE === $type) {
$dest = self::ALIAS;
} else {
$type = self::ALIAS;
$dest = self::SOURCE;
if ($this->doCache && !$this->isPreloaded) {
if (empty($this->data[self::ALIAS][$langcode])) {
$this->data[self::ALIAS][$langcode] = [];
}
$this->data[self::ALIAS][$langcode] += $this->preloadSourceItems($langcode);
$this->isPreloaded = true;
}
}
if (isset($this->data[$type][$langcode][$lookup])) {
$found = $this->data[$type][$langcode][$lookup];
return $found ? $found : $lookup;
}
$this->dataIsUpdated = true;
if (self::SOURCE === $type) {
$found = $this->storage->lookupPathSource($lookup, $langcode);
} else {
$found = $this->storage->lookupPathAlias($lookup, $langcode);
}
if ($found) {
$this->data[$type][$langcode][$lookup] = $found;
$this->data[$dest][$langcode][$found] = $lookup;
} else {
$this->data[$type][$langcode][$lookup] = false;
}
return $found ? $found : $lookup;
}
public function testTheMockUp()
{
// Tests registered aliases
$this->assertSame('alias-en', $this->aliasStorage->lookupPathAlias('duplicate-langcode', 'en'));
$this->assertSame('alias-fr', $this->aliasStorage->lookupPathAlias('duplicate-langcode', 'fr'));
$this->assertSame('alias-und', $this->aliasStorage->lookupPathAlias('duplicate-langcode', LanguageInterface::LANGCODE_NOT_SPECIFIED));
// Non existing language returns the undefined language alias
$this->assertSame('alias-und', $this->aliasStorage->lookupPathAlias('duplicate-langcode', 'martian'));
// More basic tests
$this->assertSame('duplicate-langcode', $this->aliasStorage->lookupPathSource('alias-fr', 'fr'));
$this->assertSame('duplicate-langcode', $this->aliasStorage->lookupPathSource('alias-en', 'en'));
$this->assertFalse($this->aliasStorage->lookupPathSource('alias-fr', LanguageInterface::LANGCODE_NOT_SPECIFIED));
$this->assertFalse($this->aliasStorage->lookupPathSource('alias-en', LanguageInterface::LANGCODE_NOT_SPECIFIED));
$this->assertFalse($this->aliasStorage->lookupPathSource('alias-fr', 'en'));
$this->assertFalse($this->aliasStorage->lookupPathSource('alias-en', 'fr'));
}