v3.0.0

.gitignore

@@ -4,3 +4,4 @@ vendor
 .idea
 .tmp
 composer.lock
+*.cache

.scrutinizer.yml

@@ -7,7 +7,7 @@ build:
           - php-scrutinizer-run
       environment:
         php:
-          version: '7.3'
+          version: '8.0.1'
 
 before_commands:
   - 'composer update -o --prefer-source --no-interaction'

.travis.yml

@@ -1,14 +1,12 @@
 language: php
 os: linux
-dist: xenial
+dist: bionic
 
 notifications:
   email: false
 
 php:
-  - 7.2
-  - 7.3
-  - 7.4
+  - 8.0.1
   - nightly
 
 cache:
@@ -27,7 +25,7 @@ install:
   - composer update -o --prefer-source --no-interaction
 
 script:
-  - vendor/bin/phpunit --coverage-clover build/clover.xml
+  - vendor/bin/phpunit --exclude-group internet --coverage-clover build/clover.xml
 
 after_script:
   - wget https://scrutinizer-ci.com/ocular.phar

AcceptHeaderNegotiator.php

@@ -25,56 +25,52 @@
  * @see https://developer.mozilla.org/en-US/docs/Web/HTTP/Content_negotiation
  */
 
-use Generator;
-use InvalidArgumentException;
 use Koded\Http\Interfaces\HttpStatus;
 
 class AcceptHeaderNegotiator
 {
-    /** @var AcceptHeader[] */
-    private $supports;
+    private string $supports = '';
 
     public function __construct(string $supportHeader)
     {
         $this->supports = $supportHeader;
     }
 
-
     public function match(string $accepts): AcceptHeader
+    {
+        return $this->matches($accepts)[0];
+    }
+
+    public function matches(string $accepts): array
     {
         /** @var AcceptHeader $support */
         foreach ($this->parse($accepts) as $accept) {
             foreach ($this->parse($this->supports) as $support) {
-                $support->matches($accept, $types);
+                $support->matches($accept, $matches);
             }
         }
-
-        usort($types, function(AcceptHeader $a, AcceptHeader $b) {
-            return $b->weight() <=> $a->weight();
-        });
-
-        if (empty($types)) {
+        usort($matches, fn(AcceptHeader $a, AcceptHeader $b) => $b->weight() <=> $a->weight());
+        if (empty($matches)) {
             /* Set "q=0", meaning the header is explicitly rejected.
              * The consuming clients should handle this according to
              * their internal logic. This is much better then throwing
              * exceptions which must be handled in every place where
              * match() is called. For example, the client may issue a
              * 406 status code and be done with it.
              */
-            $types[] = new class('*;q=0') extends AcceptHeader {};
+            $matches[] = new class('*;q=0') extends AcceptHeader {};
         }
-
-        return $types[0];
+        return $matches;
     }
 
     /**
      * @param string $header
      *
-     * @return Generator
+     * @return \Generator
      */
-    private function parse(string $header): Generator
+    private function parse(string $header): \Generator
     {
-        foreach (explode(',', $header) as $header) {
+        foreach (\explode(',', $header) as $header) {
             yield new class($header) extends AcceptHeader {};
         }
     }
@@ -83,177 +79,151 @@ private function parse(string $header): Generator
 
 abstract class AcceptHeader
 {
-    private $header;
-    private $separator;
-    private $type;
-    private $subtype;
-    private $quality  = 1.0;
-    private $weight   = 0.0;
-    private $catchAll = false;
-    private $params   = [];
+    private string $header    = '';
+    private string $separator = '/';
+    private string $type      = '';
+    private string $subtype   = '*';
+    private float  $quality   = 1.0;
+    private float  $weight    = 0.0;
+    private bool   $catchAll  = false;
+    private array  $params    = [];
 
     public function __construct(string $header)
     {
         $this->header = $header;
 
-        $header = preg_replace('/[[:space:]]/', '', $header);
-        $bits   = explode(';', $header);
-        $type   = array_shift($bits);
-
-        if (!empty($type) && !preg_match('~^(\*|[a-z0-9._]+)([/|_-])?(\*|[a-z0-9.\-_+]+)?$~i', $type, $matches)) {
-            throw new InvalidArgumentException(sprintf('"%s" is not a valid Access header', $header),
+        $header = \preg_replace('/[[:space:]]/', '', $header);
+        $bits   = \explode(';', $header);
+        $type   = \array_shift($bits);
+        if (!empty($type) && !\preg_match('~^(\*|[a-z0-9._]+)([/|_\-])?(\*|[a-z0-9.\-_+]+)?$~i', $type, $matches)) {
+            throw new \InvalidArgumentException(\sprintf('"%s" is not a valid Access header', $header),
                 HttpStatus::NOT_ACCEPTABLE);
         }
-
         $this->separator = $matches[2] ?? '/';
-        [$type, $subtype] = explode($this->separator, $type, 2) + [1 => '*'];
-
+        [$type, $subtype] = \explode($this->separator, $type, 2) + [1 => '*'];
         if ('*' === $type && '*' !== $subtype) {
             // @see https://tools.ietf.org/html/rfc7231#section-5.3.2
-            throw new InvalidArgumentException(sprintf('"%s" is not a valid Access header', $header),
+            throw new \InvalidArgumentException(\sprintf('"%s" is not a valid Access header', $header),
                 HttpStatus::NOT_ACCEPTABLE);
         }
-
         // @see https://tools.ietf.org/html/rfc7540#section-8.1.2
-        $this->type = strtolower($type);
-
-        /* Uses a simple heuristic to check if subtype is part of
-         * some obscure media type like "vnd.api-v1+json".
+        $this->type = \trim(\strtolower($type));
+        /*
+         * Uses a simple heuristic to check if subtype is part of
+         * some convoluted media type like "vnd.api-v1+json".
          *
          * NOTE: It is a waste of time to negotiate on the basis
          * of obscure parameters while using a meaningless media
-         * type like "vnd.whatever". But the web world is a big mess
-         * and this module can handle the Dunning-Kruger effect.
+         * type like "vnd.whatever". The web world is a big mess
+         * but this module can handle the Dunning-Kruger effect.
          */
-        $this->subtype  = explode('+', $subtype)[1] ?? $subtype;
-        $this->catchAll = '*' === $this->type && '*' === $this->subtype;
-
-        parse_str(join('&', $bits), $this->params);
+        $this->subtype  = \trim(\explode('+', $subtype)[1] ?? $subtype);
+        $this->catchAll = ('*' === $this->type) && ('*' === $this->subtype);
+        \parse_str(\join('&', $bits), $this->params);
         $this->quality = (float)($this->params['q'] ?? 1);
         unset($this->params['q']);
     }
 
-
     public function __toString(): string
     {
         return $this->value();
     }
 
-
     public function value(): string
     {
         // The header is explicitly rejected
         if (0.0 === $this->quality) {
+            $this->type = $this->subtype = '';
             return '';
         }
-
         // If language, encoding or charset
         if ('*' === $this->subtype) {
             return $this->type;
         }
-
         return $this->type . $this->separator . $this->subtype;
     }
 
-
     public function quality(): float
     {
         return $this->quality;
     }
 
-
     public function weight(): float
     {
         return $this->weight;
     }
 
+    public function is(string $type): bool
+    {
+        return ($type === $this->subtype) && ($this->subtype !== '*');
+    }
+
     /**
-     * @internal
-     *
      * @param AcceptHeader   $accept  The accept header part
      * @param AcceptHeader[] $matches Matched types
      *
-     * @return bool TRUE if the accept header part is a match
-     * against the supported (this) header part
-     *
      * This method finds the best match for the Accept header,
-     * including all the nonsense that may be passed by the
+     * including lots of nonsense that may be passed by the
      * developers who do not follow RFC standards.
      *
+     * @internal
      */
-    public function matches(AcceptHeader $accept, array &$matches = null): bool
+    public function matches(AcceptHeader $accept, array &$matches = null): void
     {
-        $matches = (array)$matches;
-        $accept  = clone $accept;
-
-        $typeMatch = $this->type === $accept->type;
-
+        $matches   = (array)$matches;
+        $accept    = clone $accept;
+        $typeMatch = ($this->type === $accept->type);
         if (1.0 === $accept->quality) {
             $accept->quality = (float)$this->quality;
         }
-
         if ($accept->catchAll) {
             $accept->type    = $this->type;
             $accept->subtype = $this->subtype;
             $matches[]       = $accept;
-
-            return true;
+            return;
         }
-
         // Explicitly denied
         if (0.0 === $this->quality) {
             $matches[] = clone $this;
-
-            return true;
+            return;
         }
-
         // Explicitly denied
         if (0.0 === $accept->quality) {
             $matches[] = $accept;
-
-            return true;
+            return;
         }
-
         // Explicit type mismatch (w/o asterisk); bail out
-        if (false === $typeMatch && '*' !== $this->type) {
-            return false;
+        if ((false === $typeMatch) && ('*' !== $this->type)) {
+            return;
         }
-
         if ('*' === $accept->subtype) {
             $accept->subtype = $this->subtype;
         }
-
-        if ($accept->subtype !== $this->subtype && '*' !== $this->subtype) {
-            return false;
+        if (($accept->subtype !== $this->subtype) && ('*' !== $this->subtype)) {
+            return;
         }
-
         $matches[] = $this->rank($accept);
-
-        return true;
     }
 
 
     private function rank(AcceptHeader $accept): AcceptHeader
     {
         // +100 if types are exact match w/o asterisk
-        if ($this->type === $accept->type && '*' !== $accept->type) {
+        if (($this->type === $accept->type) &&
+            ($this->subtype === $accept->subtype)) {
             $accept->weight += 100;
         }
-
-        $accept->weight += $this->catchAll ? 0.0 : $accept->quality;
-
+        $accept->weight += ($this->catchAll ? 0.0 : $accept->quality);
         // +1 for each parameter that matches, except "q"
         foreach ($this->params as $k => $v) {
-            if (isset($accept->params[$k]) && $accept->params[$k] === $v) {
+            if (isset($accept->params[$k]) && ($accept->params[$k] === $v)) {
                 $accept->weight += 1;
             } else {
                 $accept->weight -= 1;
             }
         }
-
         // Add "q"
         $accept->weight += $accept->quality;
-
         return $accept;
     }
 }