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<?php
namespace Icinga\Module\Director;
class PlainObjectRenderer
{
const INDENTATION = ' ';
public static function render($object)
{
return self::renderObject($object);
}
protected static function renderBoolean($value)
{
return $value ? 'true' : 'false';
}
protected static function renderInteger($value)
{
return (string) $value;
}
protected static function renderFloat($value)
{
// Render .0000 floats as integers, mainly because of some JSON
// implementations:
if ((string) (int) $value === (string) $value) {
return static::renderInteger((int) $value);
} else {
return sprintf('%F', $value);
}
}
protected static function renderNull()
{
return 'null';
}
protected static function renderString($value)
{
return '"' . addslashes($value) . '"';
}
protected static function renderArray($array, $prefix = '')
{
if (empty($array)) {
return '[]';
}
$vals = array();
foreach ($array as $val) {
$vals[] = $prefix
. self::INDENTATION
. self::renderObject($val, $prefix . self::INDENTATION);
}
return "[\n" . implode(",\n", $vals) . "\n$prefix]";
}
protected static function renderHash($hash, $prefix = '')
{
$vals = array();
$hash = (array) $hash;
if (empty($hash)) {
return '{}';
}
if (count($hash) === 1) {
$current = self::renderObject(current($hash), $prefix . self::INDENTATION);
if (strlen($current) < 62) {
return sprintf(
'{ %s: %s }',
key($hash),
$current
);
}
}
ksort($hash);
foreach ($hash as $key => $val) {
$vals[] = $prefix
. self::INDENTATION
. $key
. ': '
. self::renderObject($val, $prefix . self::INDENTATION);
}
return "{\n" . implode(",\n", $vals) . "\n$prefix}";
}
protected static function renderObject($object, $prefix = '')
{
if (is_null($object)) {
return self::renderNull();
} elseif (is_bool($object)) {
return self::renderBoolean($object);
} elseif (is_integer($object)) {
return self::renderInteger($object);
} elseif (is_float($object)) {
return self::renderFloat($object);
} elseif (is_object($object) || static::isAssocArray($object)) {
return self::renderHash($object, $prefix);
} elseif (is_array($object)) {
return self::renderArray($object, $prefix);
} elseif (is_string($object)) {
return self::renderString($object);
} else {
return '(UNKNOWN TYPE) ' . var_export($object, 1);
}
}
/**
* Check if an array contains assoc keys
*
* @from https://stackoverflow.com/questions/173400/how-to-check-if-php-array-is-associative-or-sequential
* @param $arr
* @return bool
*/
protected static function isAssocArray($arr)
{
if (! is_array($arr)) {
return false;
}
if (array() === $arr) {
return false;
}
return array_keys($arr) !== range(0, count($arr) - 1);
}
}
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