Merge pull request #32 from adriansuter/patch-slim4

Add Slim 4 support

Author: l0gicgate

.gitattributes

@@ -0,0 +1,14 @@
+# Enforce Unix newlines
+* text=lf
+
+# Exclude unused files
+# see: https://redd.it/2jzp6k
+/tests              export-ignore
+/.gitattributes     export-ignore
+/.gitignore         export-ignore
+/.travis.yml        export-ignore
+/CONTRIBUTING.md    export-ignore
+/phpcs.xml.dist     export-ignore
+/phpstan.neon.dist  export-ignore
+/phpunit.xml.dist   export-ignore
+/README.md          export-ignore

.gitignore

@@ -1,2 +1,5 @@
-vendor
+/.idea
+/coverage
+/vendor
+.phpunit.result.cache
 composer.lock

.travis.yml

@@ -1,11 +1,26 @@
 language: php
 
-php:
-  - 5.5
-  - 5.6
-  - 7.0
-  - 7.1
+dist: trusty
 
-before_script: composer install
+matrix:
+  include:
+    - php: 7.2
+    - php: 7.3
+    - php: 7.4
+      env: ANALYSIS='true'
+    - php: nightly
+  allow_failures:
+    - php: nightly
 
-script: phpunit --coverage-text
+before_script:
+  - if [[ "$ANALYSIS" == 'true' ]]; then composer require php-coveralls/php-coveralls:^2.1.0 ; fi
+  - composer install -n
+
+script:
+  - if [[ "$ANALYSIS" != 'true' ]]; then vendor/bin/phpunit ; fi
+  - if [[ "$ANALYSIS" == 'true' ]]; then vendor/bin/phpunit --coverage-clover clover.xml ; fi
+  - if [[ "$ANALYSIS" == 'true' ]]; then vendor/bin/phpcs ; fi
+  - if [[ "$ANALYSIS" == 'true' ]]; then vendor/bin/phpstan analyse src ; fi
+
+after_success:
+  - if [[ "$ANALYSIS" == 'true' ]]; then vendor/bin/php-coveralls --coverage_clover=clover.xml -v ; fi

README.md

@@ -1,6 +1,8 @@
 # Slim Framework HTTP Cache
 
 [![Build Status](https://travis-ci.org/slimphp/Slim-HttpCache.svg?branch=master)](https://travis-ci.org/slimphp/Slim-HttpCache)
+[![Latest Stable Version](https://poser.pugx.org/slim/http-cache/v)](//packagist.org/packages/slim/http-cache)
+[![License](https://poser.pugx.org/slim/http-cache/license)](https://packagist.org/packages/slim/http-cache)
 
 This repository contains a Slim Framework HTTP cache middleware and service provider.
 
@@ -12,30 +14,38 @@ Via Composer
 $ composer require slim/http-cache
 ```
 
-Requires Slim 3.0.0 or newer.
+Requires Slim 4.0.0 or newer.
 
 ## Usage
 
 ```php
-$app = new \Slim\App();
+declare(strict_types=1);
 
-// Register middleware
+use Psr\Http\Message\ResponseInterface as Response;
+use Psr\Http\Message\ServerRequestInterface as Request;
+
+require __DIR__.'/../vendor/autoload.php';
+
+$app = \Slim\Factory\AppFactory::create();
+
+// Register the http cache middleware.
 $app->add(new \Slim\HttpCache\Cache('public', 86400));
 
-// Fetch DI Container
-$container = $app->getContainer();
+// Create the cache provider.
+$cacheProvider = new \Slim\HttpCache\CacheProvider();
 
-// Register service provider
-$container['cache'] = function () {
-    return new \Slim\HttpCache\CacheProvider();
-};
+// Register a route and let the closure callback inherit the cache provider.
+$app->get(
+    '/',
+    function (Request $request, Response $response, array $args) use ($cacheProvider): Response {
+        // Use the cache provider.
+        $response = $cacheProvider->withEtag($response, 'abc');
 
-// Example route with ETag header
-$app->get('/foo', function ($req, $res, $args) {
-    $resWithEtag = $this->cache->withEtag($res, 'abc');
+        $response->getBody()->write('Hello world!');
 
-    return $resWithEtag;
-});
+        return $response;
+    }
+);
 
 $app->run();
 ```

composer.json

@@ -1,33 +1,51 @@
 {
-    "name": "slim/http-cache",
-    "type": "library",
-    "description": "Slim Framework HTTP cache middleware and service provider",
-    "keywords": ["slim","framework","middleware","cache"],
-    "homepage": "http://slimframework.com",
-    "license": "MIT",
-    "authors": [
-        {
-            "name": "Josh Lockhart",
-            "email": "hello@joshlockhart.com",
-            "homepage": "http://joshlockhart.com"
-        }
-    ],
-    "require": {
-        "php": ">=5.5.0",
-        "psr/http-message": "^1.0"
-    },
-    "require-dev": {
-        "slim/slim": "^3.0",
-        "phpunit/phpunit": "^4.0"
-    },
-    "autoload": {
-        "psr-4": {
-            "Slim\\HttpCache\\": "src"
-        }
-    },
-    "autoload-dev": {
-        "psr-4": {
-            "Slim\\HttpCache\\Tests\\": "tests"
-        }
+  "name": "slim/http-cache",
+  "type": "library",
+  "description": "Slim Framework HTTP cache middleware and service provider",
+  "keywords": [
+    "slim",
+    "framework",
+    "middleware",
+    "cache"
+  ],
+  "homepage": "https://www.slimframework.com",
+  "license": "MIT",
+  "authors": [
+    {
+      "name": "Josh Lockhart",
+      "email": "hello@joshlockhart.com",
+      "homepage": "http://joshlockhart.com"
+    }
+  ],
+  "require": {
+    "php": "^7.2",
+    "psr/http-message": "^1.0",
+    "psr/http-server-middleware": "^1.0"
+  },
+  "require-dev": {
+    "slim/psr7": "^1.1",
+    "phpunit/phpunit": "^8.5",
+    "squizlabs/php_codesniffer": "^3.5",
+    "phpstan/phpstan": "^0.12.28"
+  },
+  "autoload": {
+    "psr-4": {
+      "Slim\\HttpCache\\": "src"
     }
+  },
+  "autoload-dev": {
+    "psr-4": {
+      "Slim\\HttpCache\\Tests\\": "tests"
+    }
+  },
+  "scripts": {
+    "test": [
+      "@phpcs",
+      "@phpstan",
+      "@phpunit"
+    ],
+    "phpcs": "phpcs",
+    "phpstan": "phpstan analyse src --memory-limit=-1",
+    "phpunit": "phpunit"
+  }
 }

phpcs.xml.dist

@@ -0,0 +1,17 @@
+<?xml version="1.0"?>
+<ruleset name="Slim coding standard">
+    <description>Slim coding standard</description>
+
+    <!-- display progress -->
+    <arg value="p"/>
+    <!-- use colors in output -->
+    <arg name="colors"/>
+
+    <!-- inherit rules from: -->
+    <rule ref="PSR2"/>
+    <rule ref="Generic.Arrays.DisallowLongArraySyntax"/>
+
+    <!-- Paths to check -->
+    <file>src</file>
+    <file>tests</file>
+</ruleset>

phpstan.neon.dist

@@ -0,0 +1,3 @@
+parameters:
+  level: max
+  inferPrivatePropertyTypeFromConstructor: true

phpunit.xml.dist

@@ -1,25 +1,35 @@
 <?xml version="1.0" encoding="UTF-8"?>
-
-<phpunit backupGlobals="false"
+<phpunit xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
+         xsi:noNamespaceSchemaLocation="http://schema.phpunit.de/8.5/phpunit.xsd"
+         backupGlobals="false"
          backupStaticAttributes="false"
+         beStrictAboutTestsThatDoNotTestAnything="true"
+         beStrictAboutChangesToGlobalState="true"
+         beStrictAboutOutputDuringTests="true"
          colors="true"
          convertErrorsToExceptions="true"
          convertNoticesToExceptions="true"
          convertWarningsToExceptions="true"
          processIsolation="false"
          stopOnFailure="false"
-         syntaxCheck="false"
          bootstrap="tests/bootstrap.php"
 >
     <testsuites>
-        <testsuite name="Slim Test Suite">
-            <directory>tests/</directory>
+        <testsuite name="Slim HttpCache Test Suite">
+            <directory>./tests/</directory>
         </testsuite>
     </testsuites>
-
     <filter>
-        <whitelist>
-            <directory>src/</directory>
+        <whitelist processUncoveredFilesFromWhitelist="true">
+            <directory>./src/</directory>
         </whitelist>
     </filter>
+    <logging>
+        <log
+                type="coverage-html"
+                target="./coverage"
+                lowUpperBound="20"
+                highLowerBound="50"
+        />
+    </logging>
 </phpunit>

src/Cache.php

@@ -1,10 +1,28 @@
 <?php
+/**
+ * Slim Framework (https://www.slimframework.com)
+ *
+ * @license   https://github.com/slimphp/Slim-HttpCache/blob/master/LICENSE.md (MIT License)
+ */
+
+declare(strict_types=1);
+
 namespace Slim\HttpCache;
 
-use Psr\Http\Message\RequestInterface;
 use Psr\Http\Message\ResponseInterface;
-
-class Cache
+use Psr\Http\Message\ServerRequestInterface;
+use Psr\Http\Server\MiddlewareInterface;
+use Psr\Http\Server\RequestHandlerInterface;
+
+use function in_array;
+use function is_array;
+use function is_numeric;
+use function preg_split;
+use function reset;
+use function sprintf;
+use function strtotime;
+
+class Cache implements MiddlewareInterface
 {
     /**
      * Cache-Control type (public or private)
@@ -34,44 +52,45 @@ class Cache
      * @param int    $maxAge         The maximum age of client-side cache
      * @param bool   $mustRevalidate must-revalidate
      */
-    public function __construct($type = 'private', $maxAge = 86400, $mustRevalidate = false)
+    public function __construct(string $type = 'private', int $maxAge = 86400, bool $mustRevalidate = false)
     {
         $this->type = $type;
         $this->maxAge = $maxAge;
         $this->mustRevalidate = $mustRevalidate;
     }
 
     /**
-     * Invoke cache middleware
-     *
-     * @param  RequestInterface  $request  A PSR7 request object
-     * @param  ResponseInterface $response A PSR7 response object
-     * @param  callable          $next     The next middleware callable
-     *
-     * @return ResponseInterface           A PSR7 response object
+     * {@inheritDoc}
      */
-    public function __invoke(RequestInterface $request, ResponseInterface $response, callable $next)
+    public function process(ServerRequestInterface $request, RequestHandlerInterface $handler): ResponseInterface
     {
-        $response = $next($request, $response);
+        $response = $handler->handle($request);
 
         // Cache-Control header
         if (!$response->hasHeader('Cache-Control')) {
             if ($this->maxAge === 0) {
-                $response = $response->withHeader('Cache-Control', sprintf(
-                    '%s, no-cache%s',
-                    $this->type,
-                    $this->mustRevalidate ? ', must-revalidate' : ''
-                ));
+                $response = $response->withHeader(
+                    'Cache-Control',
+                    sprintf(
+                        '%s, no-cache%s',
+                        $this->type,
+                        $this->mustRevalidate ? ', must-revalidate' : ''
+                    )
+                );
             } else {
-                $response = $response->withHeader('Cache-Control', sprintf(
-                    '%s, max-age=%s%s',
-                    $this->type,
-                    $this->maxAge,
-                    $this->mustRevalidate ? ', must-revalidate' : ''
-                ));
+                $response = $response->withHeader(
+                    'Cache-Control',
+                    sprintf(
+                        '%s, max-age=%s%s',
+                        $this->type,
+                        $this->maxAge,
+                        $this->mustRevalidate ? ', must-revalidate' : ''
+                    )
+                );
             }
         }
 
+
         // ETag header and conditional GET check
         $etag = $response->getHeader('ETag');
         $etag = reset($etag);
@@ -81,7 +100,7 @@ public function __invoke(RequestInterface $request, ResponseInterface $response,
 
             if ($ifNoneMatch) {
                 $etagList = preg_split('@\s*,\s*@', $ifNoneMatch);
-                if (in_array($etag, $etagList) || in_array('*', $etagList)) {
+                if (is_array($etagList) && (in_array($etag, $etagList) || in_array('*', $etagList))) {
                     return $response->withStatus(304);
                 }
             }
@@ -92,7 +111,7 @@ public function __invoke(RequestInterface $request, ResponseInterface $response,
         $lastModified = $response->getHeaderLine('Last-Modified');
 
         if ($lastModified) {
-            if (!is_integer($lastModified)) {
+            if (!is_numeric($lastModified)) {
                 $lastModified = strtotime($lastModified);
             }