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<?php
namespace Psr\Http\Message;
/**
* Value object representing a URI.
*
* This interface is meant to represent URIs according to RFC 3986 and to
* provide methods for most common operations. Additional functionality for
* working with URIs can be provided on top of the interface or externally.
* Its primary use is for HTTP requests, but may also be used in other
* contexts.
*
* Instances of this interface are considered immutable; all methods that
* might change state MUST be implemented such that they retain the internal
* state of the current instance and return an instance that contains the
* changed state.
*
* Typically the Host header will be also be present in the request message.
* For server-side requests, the scheme will typically be discoverable in the
* server parameters.
*
* @link http://tools.ietf.org/html/rfc3986 (the URI specification)
*/
interface UriInterface
{
/**
* Retrieve the scheme component of the URI.
*
* If no scheme is present, this method MUST return an empty string.
*
* The value returned MUST be normalized to lowercase, per RFC 3986
* Section 3.1.
*
* The trailing ":" character is not part of the scheme and MUST NOT be
* added.
*
* @see https://tools.ietf.org/html/rfc3986#section-3.1
* @return string The URI scheme.
*/
public function getScheme();
/**
* Retrieve the authority component of the URI.
*
* If no authority information is present, this method MUST return an empty
* string.
*
* The authority syntax of the URI is:
*
* <pre>
* [user-info@]host[:port]
* </pre>
*
* If the port component is not set or is the standard port for the current
* scheme, it SHOULD NOT be included.
*
* @see https://tools.ietf.org/html/rfc3986#section-3.2
* @return string The URI authority, in "[user-info@]host[:port]" format.
*/
public function getAuthority();
/**
* Retrieve the user information component of the URI.
*
* If no user information is present, this method MUST return an empty
* string.
*
* If a user is present in the URI, this will return that value;
* additionally, if the password is also present, it will be appended to the
* user value, with a colon (":") separating the values.
*
* The trailing "@" character is not part of the user information and MUST
* NOT be added.
*
* @return string The URI user information, in "username[:password]" format.
*/
public function getUserInfo();
/**
* Retrieve the host component of the URI.
*
* If no host is present, this method MUST return an empty string.
*
* The value returned MUST be normalized to lowercase, per RFC 3986
* Section 3.2.2.
*
* @see http://tools.ietf.org/html/rfc3986#section-3.2.2
* @return string The URI host.
*/
public function getHost();
/**
* Retrieve the port component of the URI.
*
* If a port is present, and it is non-standard for the current scheme,
* this method MUST return it as an integer. If the port is the standard port
* used with the current scheme, this method SHOULD return null.
*
* If no port is present, and no scheme is present, this method MUST return
* a null value.
*
* If no port is present, but a scheme is present, this method MAY return
* the standard port for that scheme, but SHOULD return null.
*
* @return null|int The URI port.
*/
public function getPort();
/**
* Retrieve the path component of the URI.
*
* The path can either be empty or absolute (starting with a slash) or
* rootless (not starting with a slash). Implementations MUST support all
* three syntaxes.
*
* Normally, the empty path "" and absolute path "/" are considered equal as
* defined in RFC 7230 Section 2.7.3. But this method MUST NOT automatically
* do this normalization because in contexts with a trimmed base path, e.g.
* the front controller, this difference becomes significant. It's the task
* of the user to handle both "" and "/".
*
* The value returned MUST be percent-encoded, but MUST NOT double-encode
* any characters. To determine what characters to encode, please refer to
* RFC 3986, Sections 2 and 3.3.
*
* As an example, if the value should include a slash ("/") not intended as
* delimiter between path segments, that value MUST be passed in encoded
* form (e.g., "%2F") to the instance.
*
* @see https://tools.ietf.org/html/rfc3986#section-2
* @see https://tools.ietf.org/html/rfc3986#section-3.3
* @return string The URI path.
*/
public function getPath();
/**
* Retrieve the query string of the URI.
*
* If no query string is present, this method MUST return an empty string.
*
* The leading "?" character is not part of the query and MUST NOT be
* added.
*
* The value returned MUST be percent-encoded, but MUST NOT double-encode
* any characters. To determine what characters to encode, please refer to
* RFC 3986, Sections 2 and 3.4.
*
* As an example, if a value in a key/value pair of the query string should
* include an ampersand ("&") not intended as a delimiter between values,
* that value MUST be passed in encoded form (e.g., "%26") to the instance.
*
* @see https://tools.ietf.org/html/rfc3986#section-2
* @see https://tools.ietf.org/html/rfc3986#section-3.4
* @return string The URI query string.
*/
public function getQuery();
/**
* Retrieve the fragment component of the URI.
*
* If no fragment is present, this method MUST return an empty string.
*
* The leading "#" character is not part of the fragment and MUST NOT be
* added.
*
* The value returned MUST be percent-encoded, but MUST NOT double-encode
* any characters. To determine what characters to encode, please refer to
* RFC 3986, Sections 2 and 3.5.
*
* @see https://tools.ietf.org/html/rfc3986#section-2
* @see https://tools.ietf.org/html/rfc3986#section-3.5
* @return string The URI fragment.
*/
public function getFragment();
/**
* Return an instance with the specified scheme.
*
* This method MUST retain the state of the current instance, and return
* an instance that contains the specified scheme.
*
* Implementations MUST support the schemes "http" and "https" case
* insensitively, and MAY accommodate other schemes if required.
*
* An empty scheme is equivalent to removing the scheme.
*
* @param string $scheme The scheme to use with the new instance.
* @return static A new instance with the specified scheme.
* @throws \InvalidArgumentException for invalid or unsupported schemes.
*/
public function withScheme($scheme);
/**
* Return an instance with the specified user information.
*
* This method MUST retain the state of the current instance, and return
* an instance that contains the specified user information.
*
* Password is optional, but the user information MUST include the
* user; an empty string for the user is equivalent to removing user
* information.
*
* @param string $user The user name to use for authority.
* @param null|string $password The password associated with $user.
* @return static A new instance with the specified user information.
*/
public function withUserInfo($user, $password = null);
/**
* Return an instance with the specified host.
*
* This method MUST retain the state of the current instance, and return
* an instance that contains the specified host.
*
* An empty host value is equivalent to removing the host.
*
* @param string $host The hostname to use with the new instance.
* @return static A new instance with the specified host.
* @throws \InvalidArgumentException for invalid hostnames.
*/
public function withHost($host);
/**
* Return an instance with the specified port.
*
* This method MUST retain the state of the current instance, and return
* an instance that contains the specified port.
*
* Implementations MUST raise an exception for ports outside the
* established TCP and UDP port ranges.
*
* A null value provided for the port is equivalent to removing the port
* information.
*
* @param null|int $port The port to use with the new instance; a null value
* removes the port information.
* @return static A new instance with the specified port.
* @throws \InvalidArgumentException for invalid ports.
*/
public function withPort($port);
/**
* Return an instance with the specified path.
*
* This method MUST retain the state of the current instance, and return
* an instance that contains the specified path.
*
* The path can either be empty or absolute (starting with a slash) or
* rootless (not starting with a slash). Implementations MUST support all
* three syntaxes.
*
* If the path is intended to be domain-relative rather than path relative then
* it must begin with a slash ("/"). Paths not starting with a slash ("/")
* are assumed to be relative to some base path known to the application or
* consumer.
*
* Users can provide both encoded and decoded path characters.
* Implementations ensure the correct encoding as outlined in getPath().
*
* @param string $path The path to use with the new instance.
* @return static A new instance with the specified path.
* @throws \InvalidArgumentException for invalid paths.
*/
public function withPath($path);
/**
* Return an instance with the specified query string.
*
* This method MUST retain the state of the current instance, and return
* an instance that contains the specified query string.
*
* Users can provide both encoded and decoded query characters.
* Implementations ensure the correct encoding as outlined in getQuery().
*
* An empty query string value is equivalent to removing the query string.
*
* @param string $query The query string to use with the new instance.
* @return static A new instance with the specified query string.
* @throws \InvalidArgumentException for invalid query strings.
*/
public function withQuery($query);
/**
* Return an instance with the specified URI fragment.
*
* This method MUST retain the state of the current instance, and return
* an instance that contains the specified URI fragment.
*
* Users can provide both encoded and decoded fragment characters.
* Implementations ensure the correct encoding as outlined in getFragment().
*
* An empty fragment value is equivalent to removing the fragment.
*
* @param string $fragment The fragment to use with the new instance.
* @return static A new instance with the specified fragment.
*/
public function withFragment($fragment);
/**
* Return the string representation as a URI reference.
*
* Depending on which components of the URI are present, the resulting
* string is either a full URI or relative reference according to RFC 3986,
* Section 4.1. The method concatenates the various components of the URI,
* using the appropriate delimiters:
*
* - If a scheme is present, it MUST be suffixed by ":".
* - If an authority is present, it MUST be prefixed by "//".
* - The path can be concatenated without delimiters. But there are two
* cases where the path has to be adjusted to make the URI reference
* valid as PHP does not allow to throw an exception in __toString():
* - If the path is rootless and an authority is present, the path MUST
* be prefixed by "/".
* - If the path is starting with more than one "/" and no authority is
* present, the starting slashes MUST be reduced to one.
* - If a query is present, it MUST be prefixed by "?".
* - If a fragment is present, it MUST be prefixed by "#".
*
* @see http://tools.ietf.org/html/rfc3986#section-4.1
* @return string
*/
public function __toString();
}
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