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<?php
namespace Icinga\Module\Director\CheckPlugin;
use Icinga\Exception\ConfigurationError;
class Range
{
/** @var float|null */
protected $start = 0;
/** @var float|null */
protected $end = null;
/** @var bool */
protected $mustBeWithinRange = true;
public function __construct($start = 0, $end = null, $mustBeWithinRange = true)
{
$this->start = $start;
$this->end = $end;
$this->mustBeWithinRange = $mustBeWithinRange;
}
public function valueIsValid($value)
{
if ($this->valueIsWithinRange($value)) {
return $this->valueMustBeWithinRange();
} else {
return ! $this->valueMustBeWithinRange();
}
}
public function valueIsWithinRange($value)
{
if ($this->start !== null && $value < $this->start) {
return false;
}
if ($this->end !== null && $value > $this->end) {
return false;
}
return true;
}
public function valueMustBeWithinRange()
{
return $this->mustBeWithinRange;
}
/**
* @param $any
* @return static
*/
public static function wantRange($any)
{
if ($any instanceof static) {
return $any;
} else {
return static::parse($any);
}
}
/**
* @param $string
* @return static
* @throws ConfigurationError
*/
public static function parse($string)
{
$string = str_replace(' ', '', $string);
$value = '[-+]?[\d\.]+';
$valueRe = "$value(?:e$value)?";
$regex = "/^(@)?($valueRe|~)(:$valueRe|~)?/";
if (! preg_match($regex, $string, $match)) {
throw new ConfigurationError('Invalid range definition: %s', $string);
}
$inside = $match[1] === '@';
if (strlen($match[3]) === 0) {
$start = 0;
$end = static::parseValue($match[2]);
} else {
$start = static::parseValue($match[2]);
$end = static::parseValue($match[3]);
}
$range = new static($start, $end, $inside);
return $range;
}
protected static function parseValue($value)
{
if ($value === '~') {
return null;
} else {
return $value;
}
}
}
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