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<?php
/**
* League.Uri (https://uri.thephpleague.com)
*
* (c) Ignace Nyamagana Butera <nyamsprod@gmail.com>
*
* For the full copyright and license information, please view the LICENSE
* file that was distributed with this source code.
*/
declare(strict_types=1);
namespace League\Uri;
use BackedEnum;
use Deprecated;
use League\Uri\Contracts\UriException;
use League\Uri\Contracts\UriInterface;
use League\Uri\Exceptions\MissingFeature;
use League\Uri\Exceptions\SyntaxError;
use League\Uri\UriTemplate\Template;
use League\Uri\UriTemplate\TemplateCanNotBeExpanded;
use League\Uri\UriTemplate\VariableBag;
use Psr\Http\Message\UriFactoryInterface;
use Psr\Http\Message\UriInterface as Psr7UriInterface;
use Stringable;
use Uri\InvalidUriException;
use Uri\Rfc3986\Uri as Rfc3986Uri;
use Uri\WhatWg\InvalidUrlException;
use Uri\WhatWg\Url as WhatWgUrl;
use function array_fill_keys;
use function array_key_exists;
use function class_exists;
/**
* Defines the URI Template syntax and the process for expanding a URI Template into a URI reference.
*
* @link https://tools.ietf.org/html/rfc6570
* @package League\Uri
* @author Ignace Nyamagana Butera <nyamsprod@gmail.com>
* @since 6.1.0
*
* @phpstan-import-type InputValue from VariableBag
*/
final class UriTemplate implements Stringable
{
private readonly Template $template;
private readonly VariableBag $defaultVariables;
/**
* @throws SyntaxError if the template syntax is invalid
* @throws TemplateCanNotBeExpanded if the template or the variables are invalid
*/
public function __construct(BackedEnum|Stringable|string $template, iterable $defaultVariables = [])
{
$this->template = $template instanceof Template ? $template : Template::new($template);
$this->defaultVariables = $this->filterVariables($defaultVariables);
}
private function filterVariables(iterable $variables): VariableBag
{
if (!$variables instanceof VariableBag) {
$variables = new VariableBag($variables);
}
return $variables
->filter(fn ($value, string|int $name) => array_key_exists(
$name,
array_fill_keys($this->template->variableNames, 1)
));
}
/**
* Returns the string representation of the UriTemplate.
*/
public function __toString(): string
{
return $this->template->value;
}
/**
* Returns the distinct variables placeholders used in the template.
*
* @return array<string>
*/
public function getVariableNames(): array
{
return $this->template->variableNames;
}
/**
* @return array<string, InputValue>
*/
public function getDefaultVariables(): array
{
return iterator_to_array($this->defaultVariables);
}
/**
* Returns a new instance with the updated default variables.
*
* This method MUST retain the state of the current instance, and return
* an instance that contains the modified default variables.
*
* If present, variables whose name is not part of the current template
* possible variable names are removed.
*
* @throws TemplateCanNotBeExpanded if the variables are invalid
*/
public function withDefaultVariables(iterable $defaultVariables): self
{
$defaultVariables = $this->filterVariables($defaultVariables);
if ($this->defaultVariables->equals($defaultVariables)) {
return $this;
}
return new self($this->template, $defaultVariables);
}
private function templateExpanded(iterable $variables = []): string
{
return $this->template->expand($this->filterVariables($variables)->replace($this->defaultVariables));
}
private function templateExpandedOrFail(iterable $variables = []): string
{
return $this->template->expandOrFail($this->filterVariables($variables)->replace($this->defaultVariables));
}
/**
* @throws TemplateCanNotBeExpanded if the variables are invalid
* @throws UriException if the resulting expansion cannot be converted to a UriInterface instance
*/
public function expand(iterable $variables = [], Rfc3986Uri|WhatWgUrl|BackedEnum|Stringable|string|null $baseUri = null): UriInterface
{
$expanded = $this->templateExpanded($variables);
return null === $baseUri ? Uri::new($expanded) : (Uri::parse($expanded, $baseUri) ?? throw new SyntaxError('Unable to expand URI'));
}
/**
* @throws MissingFeature if no Uri\Rfc3986\Uri class is found
* @throws TemplateCanNotBeExpanded if the variables are invalid
* @throws InvalidUriException if the base URI cannot be converted to a Uri\Rfc3986\Uri instance
* @throws InvalidUriException if the resulting expansion cannot be converted to a Uri\Rfc3986\Uri instance
*/
public function expandToUri(iterable $variables = [], Rfc3986Uri|WhatWgUrl|BackedEnum|Stringable|string|null $baseUri = null): Rfc3986Uri
{
class_exists(Rfc3986Uri::class) || throw new MissingFeature('Support for '.Rfc3986Uri::class.' requires PHP8.5+ or a polyfill. Run "composer require league/uri-polyfill" or use you own polyfill.');
return new Rfc3986Uri($this->templateExpanded($variables), $this->newRfc3986Uri($baseUri));
}
/**
* @throws MissingFeature if no Uri\Whatwg\Url class is found
* @throws TemplateCanNotBeExpanded if the variables are invalid
* @throws InvalidUrlException if the base URI cannot be converted to a Uri\Whatwg\Url instance
* @throws InvalidUrlException if the resulting expansion cannot be converted to a Uri\Whatwg\Url instance
*/
public function expandToUrl(iterable $variables = [], Rfc3986Uri|WhatWgUrl|BackedEnum|Stringable|string|null $baseUrl = null, array|null &$errors = []): WhatWgUrl
{
class_exists(WhatWgUrl::class) || throw new MissingFeature('Support for '.WhatWgUrl::class.' requires PHP8.5+ or a polyfill. Run "composer require league/uri-polyfill" or use you own polyfill.');
return new WhatWgUrl($this->templateExpanded($variables), $this->newWhatWgUrl($baseUrl), $errors);
}
/**
* @throws TemplateCanNotBeExpanded if the variables are invalid
* @throws UriException if the resulting expansion cannot be converted to a UriInterface instance
*/
public function expandToPsr7Uri(
iterable $variables = [],
Rfc3986Uri|WhatWgUrl|BackedEnum|Stringable|string|null $baseUrl = null,
UriFactoryInterface $uriFactory = new HttpFactory()
): Psr7UriInterface {
$uriString = $this->templateExpandedOrFail($variables);
return $uriFactory->createUri(
null === $baseUrl
? $uriString
: UriString::resolve($uriString, match (true) {
$baseUrl instanceof Rfc3986Uri => $baseUrl->toRawString(),
$baseUrl instanceof WhatWgUrl => $baseUrl->toUnicodeString(),
default => $baseUrl,
})
);
}
/**
* @throws TemplateCanNotBeExpanded if the variables are invalid or missing
* @throws UriException if the resulting expansion cannot be converted to a UriInterface instance
*/
public function expandOrFail(iterable $variables = [], Rfc3986Uri|WhatWgUrl|BackedEnum|Stringable|string|null $baseUri = null): UriInterface
{
$expanded = $this->templateExpandedOrFail($variables);
return null === $baseUri ? Uri::new($expanded) : (Uri::parse($expanded, $baseUri) ?? throw new SyntaxError('Unable to expand URI'));
}
/**
* @throws MissingFeature if no Uri\Rfc3986\Uri class is found
* @throws TemplateCanNotBeExpanded if the variables are invalid
* @throws InvalidUriException if the base URI cannot be converted to a Uri\Rfc3986\Uri instance
* @throws InvalidUriException if the resulting expansion cannot be converted to a Uri\Rfc3986\Uri instance
*/
public function expandToUriOrFail(iterable $variables = [], Rfc3986Uri|WhatWgUrl|BackedEnum|Stringable|string|null $baseUri = null): Rfc3986Uri
{
class_exists(Rfc3986Uri::class) || throw new MissingFeature('Support for '.Rfc3986Uri::class.' requires PHP8.5+ or a polyfill. Run "composer require league/uri-polyfill" or use you own polyfill.');
return new Rfc3986Uri($this->templateExpandedOrFail($variables), $this->newRfc3986Uri($baseUri));
}
/**
* @throws MissingFeature if no Uri\Whatwg\Url class is found
* @throws TemplateCanNotBeExpanded if the variables are invalid
* @throws InvalidUrlException if the base URI cannot be converted to a Uri\Whatwg\Url instance
* @throws InvalidUrlException if the resulting expansion cannot be converted to a Uri\Whatwg\Url instance
*/
public function expandToUrlOrFail(iterable $variables = [], Rfc3986Uri|WhatWgUrl|BackedEnum|Stringable|string|null $baseUrl = null, array|null &$errors = []): WhatWgUrl
{
class_exists(WhatWgUrl::class) || throw new MissingFeature('Support for '.WhatWgUrl::class.' requires PHP8.5+ or a polyfill. Run "composer require league/uri-polyfill" or use you own polyfill.');
return new WhatWgUrl($this->templateExpandedOrFail($variables), $this->newWhatWgUrl($baseUrl), $errors);
}
/**
* @throws TemplateCanNotBeExpanded if the variables are invalid
* @throws UriException if the resulting expansion cannot be converted to a UriInterface instance
*/
public function expandToPsr7UriOrFail(
iterable $variables = [],
Rfc3986Uri|WhatWgUrl|BackedEnum|Stringable|string|null $baseUrl = null,
UriFactoryInterface $uriFactory = new HttpFactory()
): Psr7UriInterface {
$uriString = $this->templateExpandedOrFail($variables);
return $uriFactory->createUri(
null === $baseUrl
? $uriString
: UriString::resolve($uriString, match (true) {
$baseUrl instanceof Rfc3986Uri => $baseUrl->toRawString(),
$baseUrl instanceof WhatWgUrl => $baseUrl->toUnicodeString(),
default => $baseUrl,
})
);
}
/**
* @throws InvalidUrlException
*/
private function newWhatWgUrl(Rfc3986Uri|WhatWgUrl|BackedEnum|Stringable|string|null $url = null): ?WhatWgUrl
{
return match (true) {
null === $url => null,
$url instanceof WhatWgUrl => $url,
$url instanceof Rfc3986Uri => new WhatWgUrl($url->toRawString()),
$url instanceof BackedEnum => new WhatWgUrl((string) $url->value),
default => new WhatWgUrl((string) $url),
};
}
/**
* @throws InvalidUriException
*/
private function newRfc3986Uri(Rfc3986Uri|WhatWgUrl|BackedEnum|Stringable|string|null $uri = null): ?Rfc3986Uri
{
return match (true) {
null === $uri => null,
$uri instanceof Rfc3986Uri => $uri,
$uri instanceof WhatWgUrl => new Rfc3986Uri($uri->toAsciiString()),
$uri instanceof BackedEnum => new Rfc3986Uri((string) $uri->value),
default => new Rfc3986Uri((string) $uri),
};
}
/**
* DEPRECATION WARNING! This method will be removed in the next major point release.
*
* @deprecated Since version 7.6.0
* @codeCoverageIgnore
* @see UriTemplate::toString()
*
* Create a new instance from the environment.
*/
#[Deprecated(message:'use League\Uri\UriTemplate::__toString() instead', since:'league/uri:7.6.0')]
public function getTemplate(): string
{
return $this->__toString();
}
}