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<?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;
use InvalidArgumentException, RuntimeException;
use Opis\JsonSchema\Parsers\SchemaParser;
use Opis\JsonSchema\Errors\ValidationError;
use Opis\JsonSchema\Resolvers\{SchemaResolver};
class Validator
{
protected SchemaLoader $loader;
protected int $maxErrors = 1;
/**
* @param SchemaLoader|null $loader
* @param int $max_errors
*/
public function __construct(?SchemaLoader $loader = null, int $max_errors = 1)
{
$this->loader = $loader ?? new SchemaLoader(new SchemaParser(), new SchemaResolver(), true);
$this->maxErrors = $max_errors;
}
/**
* @param $data
* @param bool|string|Uri|Schema|object $schema
* @param array|null $globals
* @param array|null $slots
* @return ValidationResult
*/
public function validate($data, $schema, ?array $globals = null, ?array $slots = null): ValidationResult
{
if (is_string($schema)) {
if ($uri = Uri::parse($schema, true)) {
$schema = $uri;
} else {
$schema = json_decode($schema, false);
}
}
$error = null;
if (is_bool($schema)) {
$error = $this->dataValidation($data, $schema, $globals, $slots);
} elseif (is_object($schema)) {
if ($schema instanceof Uri) {
$error = $this->uriValidation($data, $schema, $globals, $slots);
} elseif ($schema instanceof Schema) {
$error = $this->schemaValidation($data, $schema, $globals, $slots);
} else {
$error = $this->dataValidation($data, $schema, $globals, $slots);
}
} else {
throw new InvalidArgumentException("Invalid schema");
}
return new ValidationResult($error);
}
/**
* @param $data
* @param Uri|string $uri
* @param array|null $globals
* @param array|null $slots
* @return null|ValidationError
*/
public function uriValidation($data, $uri, ?array $globals = null, ?array $slots = null): ?ValidationError
{
if (is_string($uri)) {
$uri = Uri::parse($uri, true);
}
if (!($uri instanceof Uri)) {
throw new InvalidArgumentException("Invalid uri");
}
if ($uri->fragment() === null) {
$uri = Uri::merge($uri, null, true);
}
$schema = $this->loader->loadSchemaById($uri);
if ($schema === null) {
throw new RuntimeException("Schema not found: $uri");
}
return $this->schemaValidation($data, $schema, $globals, $slots);
}
/**
* @param $data
* @param string|object|bool $schema
* @param array|null $globals
* @param array|null $slots
* @param string|null $id
* @param string|null $draft
* @return ValidationError|null
*/
public function dataValidation(
$data,
$schema,
?array $globals = null,
?array $slots = null,
?string $id = null,
?string $draft = null
): ?ValidationError
{
if (is_string($schema)) {
$schema = json_decode($schema, false);
}
if ($schema === true) {
return null;
}
if ($schema === false) {
$schema = $this->loader->loadBooleanSchema(false, $id, $draft);
} else {
if (!is_object($schema)) {
throw new InvalidArgumentException("Invalid schema");
}
$schema = $this->loader->loadObjectSchema($schema, $id, $draft);
}
return $this->schemaValidation($data, $schema, $globals, $slots);
}
/**
* @param $data
* @param Schema $schema
* @param array|null $globals
* @param array|null $slots
* @return null|ValidationError
*/
public function schemaValidation(
$data,
Schema $schema,
?array $globals = null,
?array $slots = null
): ?ValidationError
{
return $schema->validate($this->createContext($data, $globals, $slots));
}
/**
* @param $data
* @param array|null $globals
* @param array|null $slots
* @return ValidationContext
*/
public function createContext($data, ?array $globals = null, ?array $slots = null): ValidationContext
{
if ($slots) {
$slots = $this->parseSlots($slots);
}
return new ValidationContext($data, $this->loader, null, null, $globals ?? [], $slots, $this->maxErrors);
}
/**
* @return SchemaParser
*/
public function parser(): SchemaParser
{
return $this->loader->parser();
}
/**
* @param SchemaParser $parser
* @return Validator
*/
public function setParser(SchemaParser $parser): self
{
$this->loader->setParser($parser);
return $this;
}
/**
* @return SchemaResolver|null
*/
public function resolver(): ?SchemaResolver
{
return $this->loader->resolver();
}
/**
* @param SchemaResolver|null $resolver
* @return Validator
*/
public function setResolver(?SchemaResolver $resolver): self
{
$this->loader->setResolver($resolver);
return $this;
}
/**
* @return SchemaLoader
*/
public function loader(): SchemaLoader
{
return $this->loader;
}
/**
* @param SchemaLoader $loader
* @return Validator
*/
public function setLoader(SchemaLoader $loader): self
{
$this->loader = $loader;
return $this;
}
/**
* @return int
*/
public function getMaxErrors(): int
{
return $this->maxErrors;
}
/**
* @param int $max_errors
* @return Validator
*/
public function setMaxErrors(int $max_errors): self
{
$this->maxErrors = $max_errors;
return $this;
}
/**
* @param array $slots
* @return array
*/
protected function parseSlots(array $slots): array
{
foreach ($slots as $name => &$value) {
if (!is_string($name)) {
unset($slots[$name]);
continue;
}
if (is_string($value)) {
$value = Uri::parse($value, true);
}
if ($value instanceof Uri) {
$value = $this->loader->loadSchemaById($value);
} elseif (is_bool($value)) {
$value = $this->loader->loadBooleanSchema($value);
}
if (!is_object($value)) {
unset($slots[$name]);
}
unset($value);
}
return $slots;
}
}
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