<?php
/*
* This file is part of the JsonSchema package.
*
* For the full copyright and license information, please view the LICENSE
* file that was distributed with this source code.
*/
namespace JsonSchema\Entity;
use JsonSchema\Exception\InvalidArgumentException;
/**
* @package JsonSchema\Entity
*
* @author Joost Nijhuis <jnijhuis81@gmail.com>
*/
class JsonPointer
{
/** @var string */
private $filename;
/** @var string[] */
private $propertyPaths = array();
/**
* @var bool Whether the value at this path was set from a schema default
*/
private $fromDefault = false;
/**
* @param string $value
*
* @throws InvalidArgumentException when $value is not a string
*/
public function __construct($value)
{
if (!is_string($value)) {
throw new InvalidArgumentException('Ref value must be a string');
}
$splitRef = explode('#', $value, 2);
$this->filename = $splitRef[0];
if (array_key_exists(1, $splitRef)) {
$this->propertyPaths = $this->decodePropertyPaths($splitRef[1]);
}
}
/**
* @param string $propertyPathString
*
* @return string[]
*/
private function decodePropertyPaths($propertyPathString)
{
$paths = array();
foreach (explode('/', trim($propertyPathString, '/')) as $path) {
$path = $this->decodePath($path);
if (is_string($path) && '' !== $path) {
$paths[] = $path;
}
}
return $paths;
}
/**
* @return array
*/
private function encodePropertyPaths()
{
return array_map(
array($this, 'encodePath'),
$this->getPropertyPaths()
);
}
/**
* @param string $path
*
* @return string
*/
private function decodePath($path)
{
return strtr($path, array('~1' => '/', '~0' => '~', '%25' => '%'));
}
/**
* @param string $path
*
* @return string
*/
private function encodePath($path)
{
return strtr($path, array('/' => '~1', '~' => '~0', '%' => '%25'));
}
/**
* @return string
*/
public function getFilename()
{
return $this->filename;
}
/**
* @return string[]
*/
public function getPropertyPaths()
{
return $this->propertyPaths;
}
/**
* @param array $propertyPaths
*
* @return JsonPointer
*/
public function withPropertyPaths(array $propertyPaths)
{
$new = clone $this;
$new->propertyPaths = $propertyPaths;
return $new;
}
/**
* @return string
*/
public function getPropertyPathAsString()
{
return rtrim('#/' . implode('/', $this->encodePropertyPaths()), '/');
}
/**
* @return string
*/
public function __toString()
{
return $this->getFilename() . $this->getPropertyPathAsString();
}
/**
* Mark the value at this path as being set from a schema default
*/
public function setFromDefault()
{
$this->fromDefault = true;
}
/**
* Check whether the value at this path was set from a schema default
*
* @return bool
*/
public function fromDefault()
{
return $this->fromDefault;
}
}