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David Stone
2024-11-30 18:24:12 -07:00
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193
dependencies/league/uri/UriTemplate/Operator.php vendored Normal file
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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 WP_Ultimo\Dependencies\League\Uri\UriTemplate;
use WP_Ultimo\Dependencies\League\Uri\Encoder;
use WP_Ultimo\Dependencies\League\Uri\Exceptions\SyntaxError;
use Stringable;
use function implode;
use function is_array;
use function preg_match;
use function rawurlencode;
use function str_contains;
use function substr;
/**
* Processing behavior according to the expression type operator.
*
* @internal The class exposes the internal representation of an Operator and its usage
*
* @link https://www.rfc-editor.org/rfc/rfc6570#section-2.2
* @link https://tools.ietf.org/html/rfc6570#appendix-A
*/
enum Operator : string
{
/**
* Expression regular expression pattern.
*
* @link https://tools.ietf.org/html/rfc6570#section-2.2
*/
private const REGEXP_EXPRESSION = '/^\\{(?:(?<operator>[\\.\\/;\\?&\\=,\\!@\\|\\+#])?(?<variables>[^\\}]*))\\}$/';
/**
* Reserved Operator characters.
*
* @link https://tools.ietf.org/html/rfc6570#section-2.2
*/
private const RESERVED_OPERATOR = '=,!@|';
case None = '';
case ReservedChars = '+';
case Label = '.';
case Path = '/';
case PathParam = ';';
case Query = '?';
case QueryPair = '&';
case Fragment = '#';
public function first() : string
{
return match ($this) {
self::None, self::ReservedChars => '',
default => $this->value,
};
}
public function separator() : string
{
return match ($this) {
self::None, self::ReservedChars, self::Fragment => ',',
self::Query, self::QueryPair => '&',
default => $this->value,
};
}
public function isNamed() : bool
{
return match ($this) {
self::Query, self::PathParam, self::QueryPair => \true,
default => \false,
};
}
/**
* Removes percent encoding on reserved characters (used with + and # modifiers).
*/
public function decode(string $var) : string
{
return match ($this) {
Operator::ReservedChars, Operator::Fragment => (string) Encoder::encodeQueryOrFragment($var),
default => rawurlencode($var),
};
}
/**
* @throws SyntaxError if the expression is invalid
* @throws SyntaxError if the operator used in the expression is invalid
* @throws SyntaxError if the contained variable specifiers are invalid
*
* @return array{operator:Operator, variables:string}
*/
public static function parseExpression(Stringable|string $expression) : array
{
$expression = (string) $expression;
if (1 !== preg_match(self::REGEXP_EXPRESSION, $expression, $parts)) {
throw new SyntaxError('The expression "' . $expression . '" is invalid.');
}
/** @var array{operator:string, variables:string} $parts */
$parts = $parts + ['operator' => ''];
if ('' !== $parts['operator'] && str_contains(self::RESERVED_OPERATOR, $parts['operator'])) {
throw new SyntaxError('The operator used in the expression "' . $expression . '" is reserved.');
}
return ['operator' => self::from($parts['operator']), 'variables' => $parts['variables']];
}
/**
* Replaces an expression with the given variables.
*
* @throws TemplateCanNotBeExpanded if the variables is an array and a ":" modifier needs to be applied
* @throws TemplateCanNotBeExpanded if the variables contains nested array values
*/
public function expand(VarSpecifier $varSpecifier, VariableBag $variables) : string
{
$value = $variables->fetch($varSpecifier->name);
if (null === $value) {
return '';
}
[$expanded, $actualQuery] = $this->inject($value, $varSpecifier);
if (!$actualQuery) {
return $expanded;
}
if ('&' !== $this->separator() && '' === $expanded) {
return $varSpecifier->name;
}
return $varSpecifier->name . '=' . $expanded;
}
/**
* @param string|array<string> $value
*
* @return array{0:string, 1:bool}
*/
private function inject(array|string $value, VarSpecifier $varSpec) : array
{
if (is_array($value)) {
return $this->replaceList($value, $varSpec);
}
if (':' === $varSpec->modifier) {
$value = substr($value, 0, $varSpec->position);
}
return [$this->decode($value), $this->isNamed()];
}
/**
* Expands an expression using a list of values.
*
* @param array<string> $value
*
* @throws TemplateCanNotBeExpanded if the variables is an array and a ":" modifier needs to be applied
*
* @return array{0:string, 1:bool}
*/
private function replaceList(array $value, VarSpecifier $varSpec) : array
{
if (':' === $varSpec->modifier) {
throw TemplateCanNotBeExpanded::dueToUnableToProcessValueListWithPrefix($varSpec->name);
}
if ([] === $value) {
return ['', \false];
}
$pairs = [];
$isList = \array_is_list($value);
$useQuery = $this->isNamed();
foreach ($value as $key => $var) {
if (!$isList) {
$key = rawurlencode((string) $key);
}
$var = $this->decode($var);
if ('*' === $varSpec->modifier) {
if (!$isList) {
$var = $key . '=' . $var;
} elseif ($key > 0 && $useQuery) {
$var = $varSpec->name . '=' . $var;
}
}
$pairs[$key] = $var;
}
if ('*' === $varSpec->modifier) {
if (!$isList) {
// Don't prepend the value name when using the `explode` modifier with an associative array.
$useQuery = \false;
}
return [implode($this->separator(), $pairs), $useQuery];
}
if (!$isList) {
// When an associative array is encountered and the `explode` modifier is not set, then
// the result must be a comma separated list of keys followed by their respective values.
$retVal = [];
foreach ($pairs as $offset => $data) {
$retVal[$offset] = $offset . ',' . $data;
}
$pairs = $retVal;
}
return [implode(',', $pairs), $useQuery];
}
}