Merge pull request #638 from skipperbent/v5-feature-ending-slash

[FEATURE] Parameter ending trail/slash

Author: skipperbent

.gitignore

@@ -1,4 +1,5 @@
 composer.lock
 vendor/
 .idea/
-.phpunit.result.cache
+.phpunit.result.cache
+tests/tmp

README.md

@@ -36,11 +36,12 @@ You can donate any amount of your choice by [clicking here](https://www.paypal.c
 		- [Available methods](#available-methods)
 		- [Multiple HTTP-verbs](#multiple-http-verbs)
 	- [Route parameters](#route-parameters)
-		- [Required parameters](#required-parameters)
-		- [Optional parameters](#optional-parameters)
-		- [Regular expression constraints](#regular-expression-constraints)
-		- [Regular expression route-match](#regular-expression-route-match)
-		- [Custom regex for matching parameters](#custom-regex-for-matching-parameters)
+        - [Required parameters](#required-parameters)
+        - [Optional parameters](#optional-parameters)
+        - [Including slash in parameters](#including-slash-in-parameters)
+        - [Regular expression constraints](#regular-expression-constraints)
+        - [Regular expression route-match](#regular-expression-route-match)
+        - [Custom regex for matching parameters](#custom-regex-for-matching-parameters)
 	- [Named routes](#named-routes)
 		- [Generating URLs To Named Routes](#generating-urls-to-named-routes)
 	- [Router groups](#router-groups)
@@ -490,6 +491,28 @@ SimpleRouter::get('/user/{name?}', function ($name = 'Simon') {
 });
 ```
 
+### Including slash in parameters
+
+If you're working with WebDAV services the url could mean the difference between a file and a folder.
+
+For instance `/path` will be considered a file - whereas `/path/` will be considered a folder.
+
+The router can add the ending slash for the last parameter in your route based on the path. So if `/path/` is requested the parameter will contain the value of `path/` and visa versa.
+
+To ensure compatibility with older versions, this feature is disabled by default and has to be enabled by setting 
+the `setSettings(['includeSlash' => true])` or by using setting `setSlashParameterEnabled(true)` for your route.
+
+**Example**
+
+```php
+SimpleRouter::get('/path/{fileOrFolder}', function ($fileOrFolder) {
+	return $fileOrFolder;
+})->setSettings(['includeSlash' => true]);
+```
+
+- Requesting `/path/file` will return the `$fileOrFolder` value: `file`.
+- Requesting `/path/folder/` will return the `$fileOrFolder` value: `folder/`.
+
 ### Regular expression constraints
 
 You may constrain the format of your route parameters using the where method on a route instance. The where method accepts the name of the parameter and a regular expression defining how the parameter should be constrained:

src/Pecee/Http/Url.php

@@ -42,6 +42,12 @@ class Url implements JsonSerializable
      */
     private $path;
 
+    /**
+     * Original path with no sanitization to ending slash
+     * @var string|null
+     */
+    private $originalPath;
+
     /**
      * @var array
      */
@@ -73,6 +79,7 @@ public function __construct(?string $url)
 
             if (isset($data['path']) === true) {
                 $this->setPath($data['path']);
+                $this->originalPath = $data['path'];
             }
 
             $this->fragment = $data['fragment'] ?? null;
@@ -226,6 +233,15 @@ public function getPath(): ?string
         return $this->path ?? '/';
     }
 
+    /**
+     * Get original path with no sanitization of ending trail/slash.
+     * @return string|null
+     */
+    public function getOriginalPath(): ?string
+    {
+        return $this->originalPath;
+    }
+
     /**
      * Set the url path
      *
@@ -284,7 +300,7 @@ public function setQueryString(string $queryString): self
         $params = [];
         parse_str($queryString, $params);
 
-        if(count($params) > 0) {
+        if (count($params) > 0) {
             return $this->setParams($params);
         }
 
@@ -469,7 +485,7 @@ public function getRelativeUrl(bool $includeParams = true): string
     {
         $path = $this->path ?? '/';
 
-        if($includeParams === false) {
+        if ($includeParams === false) {
             return $path;
         }
 

src/Pecee/SimpleRouter/Route/Route.php

@@ -20,6 +20,12 @@ abstract class Route implements IRoute
      */
     protected $filterEmptyParams = true;
 
+    /**
+     * If true the last parameter of the route will include ending trail/slash.
+     * @var bool
+     */
+    protected $slashParameterEnabled = false;
+
     /**
      * Default regular expression used for parsing parameters.
      * @var string|null
@@ -111,7 +117,7 @@ public function renderRoute(Request $request, Router $router): ?string
         return $router->getClassLoader()->loadClassMethod($class, $method, $parameters);
     }
 
-    protected function parseParameters($route, $url, $parameterRegex = null): ?array
+    protected function parseParameters($route, $url, Request $request, $parameterRegex = null): ?array
     {
         $regex = (strpos($route, $this->paramModifiers[0]) === false) ? null :
             sprintf
@@ -123,16 +129,18 @@ protected function parseParameters($route, $url, $parameterRegex = null): ?array
             );
 
         // Ensures that host names/domains will work with parameters
-        
-        if($route[0] == '{') $url = '/' . ltrim($url, '/');
+        if ($route[0] === $this->paramModifiers[0]) {
+            $url = '/' . ltrim($url, '/');
+        }
+
         $urlRegex = '';
         $parameters = [];
 
         if ($regex === null || (bool)preg_match_all('/' . $regex . '/u', $route, $parameters) === false) {
             $urlRegex = preg_quote($route, '/');
         } else {
 
-            foreach (preg_split('/((\.?-?\/?){[^}]+})/', $route) as $key => $t) {
+            foreach (preg_split('/((\.?-?\/?){[^' . $this->paramModifiers[1] . ']+' . $this->paramModifiers[1] . ')/', $route) as $key => $t) {
 
                 $regex = '';
 
@@ -154,6 +162,7 @@ protected function parseParameters($route, $url, $parameterRegex = null): ?array
             }
         }
 
+        // Get name of last param
         if (trim($urlRegex) === '' || (bool)preg_match(sprintf($this->urlRegex, $urlRegex), $url, $matches) === false) {
             return null;
         }
@@ -167,18 +176,25 @@ protected function parseParameters($route, $url, $parameterRegex = null): ?array
             $lastParams = [];
 
             /* Only take matched parameters with name */
-            foreach ((array)$parameters[1] as $name) {
+            $originalPath = $request->getUrl()->getOriginalPath();
+            foreach ((array)$parameters[1] as $i => $name) {
 
                 // Ignore parent parameters
                 if (isset($groupParameters[$name]) === true) {
                     $lastParams[$name] = $matches[$name];
                     continue;
                 }
 
+                // If last parameter and slash parameter is enabled, use slash according to original path (non sanitized version)
+                $lastParameter = $this->paramModifiers[0] . $name . $this->paramModifiers[1] . '/';
+                if ($this->slashParameterEnabled && ($i === count($parameters[1]) - 1) && (substr_compare($route, $lastParameter, -strlen($lastParameter)) === 0) && $originalPath[strlen($originalPath) - 1] === '/') {
+                    $matches[$name] .= '/';
+                }
+
                 $values[$name] = (isset($matches[$name]) === true && $matches[$name] !== '') ? $matches[$name] : null;
             }
 
-            $values = array_merge($values, $lastParams);
+            $values += $lastParams;
         }
 
         $this->originalParameters = $values;
@@ -387,6 +403,17 @@ public function getNamespace(): ?string
         return $this->namespace ?? $this->defaultNamespace;
     }
 
+    public function setSlashParameterEnabled(bool $enabled): self
+    {
+        $this->slashParameterEnabled = $enabled;
+        return $this;
+    }
+
+    public function getSlashParameterEnabled(): bool
+    {
+        return $this->slashParameterEnabled;
+    }
+
     /**
      * Export route settings to array so they can be merged with another route.
      *
@@ -416,6 +443,10 @@ public function toArray(): array
             $values['defaultParameterRegex'] = $this->defaultParameterRegex;
         }
 
+        if ($this->slashParameterEnabled === true) {
+            $values['includeSlash'] = $this->slashParameterEnabled;
+        }
+
         return $values;
     }
 
@@ -453,6 +484,10 @@ public function setSettings(array $settings, bool $merge = false): IRoute
             $this->setDefaultParameterRegex($settings['defaultParameterRegex']);
         }
 
+        if (isset($settings['includeSlash']) === true) {
+            $this->setSlashParameterEnabled($settings['includeSlash']);
+        }
+
         return $this;
     }
 

src/Pecee/SimpleRouter/Route/RouteGroup.php

@@ -33,7 +33,7 @@ public function matchDomain(Request $request): bool
                 return true;
             }
 
-            $parameters = $this->parseParameters($domain, $request->getHost(), '.*');
+            $parameters = $this->parseParameters($domain, $request->getHost(), $request, '.*');
 
             if ($parameters !== null && count($parameters) !== 0) {
                 $this->parameters = $parameters;
@@ -60,7 +60,7 @@ public function matchRoute(string $url, Request $request): bool
 
         if ($this->prefix !== null) {
             /* Parse parameters from current route */
-            $parameters = $this->parseParameters($this->prefix, $url);
+            $parameters = $this->parseParameters($this->prefix, $url, $request);
 
             /* If no custom regular expression or parameters was found on this route, we stop */
             if ($parameters === null) {

src/Pecee/SimpleRouter/Route/RouteResource.php

@@ -99,7 +99,7 @@ public function matchRoute(string $url, Request $request): bool
         $route = rtrim($this->url, '/') . '/{id?}/{action?}';
 
         /* Parse parameters from current route */
-        $this->parameters = $this->parseParameters($route, $url);
+        $this->parameters = $this->parseParameters($route, $url, $request);
 
         /* If no custom regular expression or parameters was found on this route, we stop */
         if ($regexMatch === null && $this->parameters === null) {

src/Pecee/SimpleRouter/Route/RouteUrl.php

@@ -31,7 +31,7 @@ public function matchRoute(string $url, Request $request): bool
         }
 
         /* Parse parameters from current route */
-        $parameters = $this->parseParameters($this->url, $url);
+        $parameters = $this->parseParameters($this->url, $url, $request);
 
         /* If no custom regular expression or parameters was found on this route, we stop */
         if ($regexMatch === null && $parameters === null) {