nur-sery/wip/schema/input/Input.php

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<?php
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namespace nur\sery\wip\schema\input;
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use nur\sery\cl;
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/**
* Class Input: accès à une valeur
*
* cette implémentation lit depuis et écrit dans une référence
*/
class Input {
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const ALLOW_EMPTY = true;
function __construct(&$dest=null, ?array $params=null) {
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$this->dest =& $dest;
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$allowEmpty = cl::get($params, "allow_empty");
if ($allowEmpty === null) $allowEmpty = static::ALLOW_EMPTY;
$this->allowEmpty = $allowEmpty;
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}
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protected $dest;
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/** tester si la valeur existe sans tenir compte de $allowEmpty */
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function isPresent($key=null): bool {
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if ($key === null) return true;
$dest = $this->dest;
return $dest !== null && array_key_exists($key, $dest);
}
/**
* @var bool comment considérer une chaine vide: "" si allowEmpty, null sinon
*/
protected $allowEmpty;
/** tester si la valeur est disponible en tenant compte de $allowEmpty */
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function isAvailable($key=null): bool {
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if ($key === null) return true;
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$dest = $this->dest;
if ($dest === null || !array_key_exists($key, $dest)) return false;
return $this->allowEmpty || $dest[$key] !== "";
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}
function get($key=null) {
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$dest = $this->dest;
if ($key === null) return $dest;
if ($dest === null || !array_key_exists($key, $dest)) return null;
$value = $dest[$key];
if ($value === "" && !$this->allowEmpty) return null;
return $value;
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}
function set($value, $key=null): void {
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if ($key === null) $this->dest = $value;
else $this->dest[$key] = $value;
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}
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function unset($key=null): void {
if ($key === null) $this->dest = null;
else unset($this->dest[$key]);
}
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}