<?php
/* ============================================================================
* Copyright 2020 Zindex Software
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
* ============================================================================ */
namespace Opis\JsonSchema\Keywords;
use Opis\JsonSchema\{ValidationContext, Keyword, Schema, ContentEncoding};
use Opis\JsonSchema\Resolvers\ContentEncodingResolver;
use Opis\JsonSchema\Errors\ValidationError;
use Opis\JsonSchema\Exceptions\UnresolvedContentEncodingException;
class ContentEncodingKeyword implements Keyword
{
use ErrorTrait;
protected string $name;
protected ?ContentEncodingResolver $resolver;
/** @var bool|null|callable|ContentEncoding */
protected $encoding = false;
/**
* @param string $name
* @param null|ContentEncodingResolver $resolver
*/
public function __construct(string $name, ?ContentEncodingResolver $resolver = null)
{
$this->name = $name;
$this->resolver = $resolver;
}
/**
* @inheritDoc
*/
public function validate(ValidationContext $context, Schema $schema): ?ValidationError
{
if (!$this->resolver) {
return null;
}
if ($this->encoding === false) {
$this->encoding = $this->resolver->resolve($this->name);
}
if ($this->encoding === null) {
throw new UnresolvedContentEncodingException($this->name, $schema, $context);
}
$result = $this->encoding instanceof ContentEncoding
? $this->encoding->decode($context->currentData(), $this->name)
: ($this->encoding)($context->currentData(), $this->name);
if ($result === null) {
return $this->error($schema, $context, 'contentEncoding', "The value must be encoded as '{encoding}'", [
'encoding' => $this->name,
]);
}
$context->setDecodedContent($result);
return null;
}
}