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<?php
namespace Consolidation\AnnotatedCommand\Parser;
/**
* An associative array that maps from key to default value;
* each entry can also have a description.
*/
class DefaultsWithDescriptions
{
/**
* @var array Associative array of key : default mappings
*/
protected $values;
/**
* @var array Associative array used like a set to indicate default value
* exists for the key.
*/
protected $hasDefault;
/**
* @var array Associative array of key : description mappings
*/
protected $descriptions;
/**
* @var mixed Default value that the default value of items in
* the collection should take when not specified in the 'add' method.
*/
protected $defaultDefault;
public function __construct($values = [], $defaultDefault = null)
{
$this->values = $values;
$this->hasDefault = array_filter($this->values, function ($value) {
return isset($value);
});
$this->descriptions = [];
$this->defaultDefault = $defaultDefault;
}
/**
* Return just the key : default values mapping
*
* @return array
*/
public function getValues()
{
return $this->values;
}
/**
* Return true if this set of options is empty
*
* @return
*/
public function isEmpty()
{
return empty($this->values);
}
/**
* Check to see whether the speicifed key exists in the collection.
*
* @param string $key
* @return boolean
*/
public function exists($key)
{
return array_key_exists($key, $this->values);
}
/**
* Get the value of one entry.
*
* @param string $key The key of the item.
* @return string
*/
public function get($key)
{
if (array_key_exists($key, $this->values)) {
return $this->values[$key];
}
return $this->defaultDefault;
}
/**
* Get the description of one entry.
*
* @param string $key The key of the item.
* @return string
*/
public function getDescription($key)
{
if (array_key_exists($key, $this->descriptions)) {
return $this->descriptions[$key];
}
return '';
}
/**
* Add another argument to this command.
*
* @param string $key Name of the argument.
* @param string $description Help text for the argument.
* @param mixed $defaultValue The default value for the argument.
*/
public function add($key, $description = '', $defaultValue = null)
{
if (!$this->exists($key) || isset($defaultValue)) {
$this->values[$key] = isset($defaultValue) ? $defaultValue : $this->defaultDefault;
}
unset($this->descriptions[$key]);
if (!empty($description)) {
$this->descriptions[$key] = $description;
}
}
/**
* Change the default value of an entry.
*
* @param string $key
* @param mixed $defaultValue
*/
public function setDefaultValue($key, $defaultValue)
{
$this->values[$key] = $defaultValue;
$this->hasDefault[$key] = true;
return $this;
}
/**
* Check to see if the named argument definitively has a default value.
*
* @param string $key
* @return bool
*/
public function hasDefault($key)
{
return array_key_exists($key, $this->hasDefault);
}
/**
* Remove an entry
*
* @param string $key The entry to remove
*/
public function clear($key)
{
unset($this->values[$key]);
unset($this->descriptions[$key]);
}
/**
* Rename an existing option to something else.
*/
public function rename($oldName, $newName)
{
$this->add($newName, $this->getDescription($oldName), $this->get($oldName));
$this->clear($oldName);
}
}