The names are sorted alphabetically in ascending order. If you set
$includeAliases to true, the alias names are included in the result.
public function testGetNamesWithAliases()
{
$ls = new Command(CommandConfig::create('ls')->addAlias('ls-alias'));
$cd = new Command(CommandConfig::create('cd')->addAlias('cd-alias'));
$this->collection->add($ls);
$this->collection->add($cd);
$this->assertSame(array('cd', 'cd-alias', 'ls', 'ls-alias'), $this->collection->getNames(true));
}
/**
* Searches a command collection for similar names.
*
* @param string $commandName The command name that was not found.
* @param CommandCollection $commands The available commands.
*
* @return string[] The names of similar commands.
*/
public static function find($commandName, CommandCollection $commands)
{
$threshold = 1000.0;
$distancesByName = array();
// Include aliases in the search
$actualNames = $commands->getNames(true);
foreach ($actualNames as $actualName) {
// Get Levenshtein distance between the input and each command name
$distance = levenshtein($commandName, $actualName);
$isSimilar = $distance <= strlen($commandName) / 3;
$isSubString = false !== strpos($actualName, $commandName);
if ($isSimilar || $isSubString) {
$distancesByName[$actualName] = $distance;
}
}
// Only keep results with a distance below the threshold
$distancesByName = array_filter($distancesByName, function ($distance) use($threshold) {
return $distance < 2 * $threshold;
});
// Display results with shortest distance first
asort($distancesByName);
$suggestedNames = array_keys($distancesByName);
return self::filterDuplicates($suggestedNames, $commands);
}
