Nyholm\Psr7\Uri

Complexity

Total Complexity

67

Size/Duplication

Total Lines	312
Duplicated Lines	0 %

Coupling/Cohesion

Components	1
Dependencies	0

Test Coverage

Coverage

95.52%

Importance

Changes

0

26 Methods

Rating	Name	Duplication	Size	Complexity
A	__construct()	0	10	3
A	__toString()	0	4	1
A	getScheme()	0	4	1
A	getAuthority()	0	17	4
A	getUserInfo()	0	4	1
A	getHost()	0	4	1
A	getPort()	0	4	1
A	getPath()	0	4	1
A	getQuery()	0	4	1
A	getFragment()	0	4	1
A	withScheme()	0	12	2
A	withUserInfo()	0	16	4
A	withHost()	0	11	2
A	withPort()	0	11	2
A	withPath()	0	11	2
A	withQuery()	0	11	2
A	withFragment()	0	11	2
C	applyParts()	0	13	9
B	createUriString()	0	38	11
A	isNonStandardPort()	0	4	2
A	filterScheme()	0	8	2
A	filterHost()	0	8	2
A	filterPort()	0	13	5
A	filterPath()	0	8	2
A	filterQueryAndFragment()	0	8	2
A	rawurlencodeMatchZero()	0	4	1

<?php

declare(strict_types=1);

namespace Nyholm\Psr7;

use Psr\Http\Message\UriInterface;

/**
 * PSR-7 URI implementation.
 *
 * @author Michael Dowling
 * @author Tobias Schultze
 * @author Matthew Weier O'Phinney
 * @author Tobias Nyholm <tobias.nyholm@gmail.com>
 */
final class Uri implements UriInterface
{
    private static $schemes = ['http' => 80, 'https' => 443];

    private static $charUnreserved = 'a-zA-Z0-9_\-\.~';

    private static $charSubDelims = '!\$&\'\(\)\*\+,;=';

    /** @var string Uri scheme. */
    private $scheme = '';

    /** @var string Uri user info. */
    private $userInfo = '';

    /** @var string Uri host. */
    private $host = '';

    /** @var int|null Uri port. */
    private $port;

    /** @var string Uri path. */
    private $path = '';

    /** @var string Uri query string. */
    private $query = '';

    /** @var string Uri fragment. */
    private $fragment = '';

    public function __construct(string $uri = '')
    {
        if ('' !== $uri) {
            if (false === $parts = parse_url($uri)) {
                throw new \InvalidArgumentException("Unable to parse URI: $uri");
            }

            $this->applyParts($parts);
        }
    }

    public function __toString(): string
    {
        return self::createUriString($this->scheme, $this->getAuthority(), $this->path, $this->query, $this->fragment);
    }

    public function getScheme(): string
    {
        return $this->scheme;
    }

    public function getAuthority(): string
    {
        if ('' === $this->host) {
            return '';
        }

        $authority = $this->host;
        if ('' !== $this->userInfo) {
            $authority = $this->userInfo.'@'.$authority;
        }

        if (null !== $this->port) {
            $authority .= ':'.$this->port;
        }

        return $authority;
    }

    public function getUserInfo(): string
    {
        return $this->userInfo;
    }

    public function getHost(): string
    {
        return $this->host;
    }

    public function getPort(): ?int
    {
        return $this->port;
    }

    public function getPath(): string
    {
        return $this->path;
    }

    public function getQuery(): string
    {
        return $this->query;
    }

    public function getFragment(): string
    {
        return $this->fragment;
    }

    public function withScheme($scheme): self
    {
        if ($this->scheme === $scheme = $this->filterScheme($scheme)) {
            return $this;
        }

        $new = clone $this;
        $new->scheme = $scheme;
        $new->port = $new->filterPort($new->port);

        return $new;
    }

    public function withUserInfo($user, $password = null): self
    {
        $info = $user;
        if (null !== $password && '' !== $password) {
            $info .= ':'.$password;
        }

        if ($this->userInfo === $info) {
            return $this;
        }

        $new = clone $this;
        $new->userInfo = $info;

        return $new;
    }

    public function withHost($host): self
    {
        if ($this->host === $host = $this->filterHost($host)) {
            return $this;
        }

        $new = clone $this;
        $new->host = $host;

        return $new;
    }

    public function withPort($port): self
    {
        if ($this->port === $port = $this->filterPort($port)) {
            return $this;
        }

        $new = clone $this;
        $new->port = $port;

        return $new;
    }

    public function withPath($path): self
    {
        if ($this->path === $path = $this->filterPath($path)) {
            return $this;
        }

        $new = clone $this;
        $new->path = $path;

        return $new;
    }

    public function withQuery($query): self
    {
        if ($this->query === $query = $this->filterQueryAndFragment($query)) {
            return $this;
        }

        $new = clone $this;
        $new->query = $query;

        return $new;
    }

    public function withFragment($fragment): self
    {
        if ($this->fragment === $fragment = $this->filterQueryAndFragment($fragment)) {
            return $this;
        }

        $new = clone $this;
        $new->fragment = $fragment;

        return $new;
    }

    /**
     * Apply parse_url parts to a URI.
     *
     * @param array $parts Array of parse_url parts to apply
     */
    private function applyParts(array $parts): void
    {
        $this->scheme = isset($parts['scheme']) ? $this->filterScheme($parts['scheme']) : '';
        $this->userInfo = isset($parts['user']) ? $parts['user'] : '';
        $this->host = isset($parts['host']) ? $this->filterHost($parts['host']) : '';
        $this->port = isset($parts['port']) ? $this->filterPort($parts['port']) : null;
        $this->path = isset($parts['path']) ? $this->filterPath($parts['path']) : '';
        $this->query = isset($parts['query']) ? $this->filterQueryAndFragment($parts['query']) : '';
        $this->fragment = isset($parts['fragment']) ? $this->filterQueryAndFragment($parts['fragment']) : '';
        if (isset($parts['pass'])) {
            $this->userInfo .= ':'.$parts['pass'];
        }
    }

    /**
     * Create a URI string from its various parts.
     */
    private static function createUriString(string $scheme, string $authority, string $path, string $query, string $fragment): string
    {
        $uri = '';
        if ('' !== $scheme) {
            $uri .= $scheme.':';
        }

        if ('' !== $authority) {
            $uri .= '//'.$authority;
        }

        if ('' !== $path) {
            if ('/' !== $path[0]) {
                if ('' !== $authority) {
                    // If the path is rootless and an authority is present, the path MUST be prefixed by "/"
                    $path = '/'.$path;
                }
            } elseif (isset($path[1]) && '/' === $path[1]) {
                if ('' === $authority) {
                    // If the path is starting with more than one "/" and no authority is present, the
                    // starting slashes MUST be reduced to one.
                    $path = '/'.ltrim($path, '/');
                }
            }

            $uri .= $path;
        }

        if ('' !== $query) {
            $uri .= '?'.$query;
        }

        if ('' !== $fragment) {
            $uri .= '#'.$fragment;
        }

        return $uri;
    }

    /**
     * Is a given port non-standard for the current scheme?
     */
    private static function isNonStandardPort(string $scheme, int $port): bool
    {
        return !isset(self::$schemes[$scheme]) || $port !== self::$schemes[$scheme];
    }

    private function filterScheme($scheme): string
    {
        if (!is_string($scheme)) {
            throw new \InvalidArgumentException('Scheme must be a string');
        }

        return strtolower($scheme);
    }

    private function filterHost($host): string
    {
        if (!is_string($host)) {
            throw new \InvalidArgumentException('Host must be a string');
        }

        return strtolower($host);
    }

    private function filterPort($port): ?int
    {
        if (null === $port) {
            return null;
        }

        $port = (int) $port;
        if (1 > $port || 0xffff < $port) {
            throw new \InvalidArgumentException(sprintf('Invalid port: %d. Must be between 1 and 65535', $port));
        }

        return self::isNonStandardPort($this->scheme, $port) ? $port : null;
    }

    private function filterPath($path): string
    {
        if (!is_string($path)) {
            throw new \InvalidArgumentException('Path must be a string');
        }

        return preg_replace_callback('/(?:[^'.self::$charUnreserved.self::$charSubDelims.'%:@\/]++|%(?![A-Fa-f0-9]{2}))/', [$this, 'rawurlencodeMatchZero'], $path);
    }

    private function filterQueryAndFragment($str): string
    {
        if (!is_string($str)) {
            throw new \InvalidArgumentException('Query and fragment must be a string');
        }

        return preg_replace_callback('/(?:[^'.self::$charUnreserved.self::$charSubDelims.'%:@\/\?]++|%(?![A-Fa-f0-9]{2}))/', [$this, 'rawurlencodeMatchZero'], $str);
    }

    private function rawurlencodeMatchZero(array $match): string
    {
        return rawurlencode($match[0]);
    }
}