Add whitelist_patterns option to PhpMnd task

doc/tasks/phpmnd.md

@@ -18,6 +18,7 @@ parameters:
     tasks:
         phpmnd:
             directory: .
+            whitelist_patterns: []
             exclude: []
             exclude_name: []
             exclude_path: []
@@ -35,6 +36,18 @@ parameters:
 
 With this parameter you can define which directory you want to run `phpmnd` in (must be relative to cwd).
 
+**whitelist_patterns**
+
+*Default: []*
+
+This is a list of regex patterns that will filter files to validate. With this option you can skip files like tests. This option is used in relation with the parameter `triggered_by`.
+For exemple to validate only files in your `src/App/` and `src/AppBundle/` directories in a Symfony you can use 
+```yml
+whitelist_patterns:
+  - /^src\/App\/(.*)/
+  - /^src\/AppBundle\/(.*)/
+```
+
 **exclude**
 
 *Default: []*

spec/Task/PhpMndSpec.php

@@ -41,6 +41,7 @@ function it_should_have_configurable_options()
         $options = $this->getConfigurableOptions();
         $options->shouldBeAnInstanceOf(OptionsResolver::class);
         $options->getDefinedOptions()->shouldContain('directory');
+        $options->getDefinedOptions()->shouldContain('whitelist_patterns');
         $options->getDefinedOptions()->shouldContain('exclude');
         $options->getDefinedOptions()->shouldContain('exclude_name');
         $options->getDefinedOptions()->shouldContain('exclude_path');

src/Task/PhpMnd.php

@@ -29,6 +29,7 @@ public function getConfigurableOptions()
         $resolver = new OptionsResolver();
         $resolver->setDefaults([
             'directory' => '.',
+            'whitelist_patterns' => [],
             'exclude' => [],
             'exclude_name' => [],
             'exclude_path' => [],
@@ -41,6 +42,7 @@ public function getConfigurableOptions()
         ]);
 
         $resolver->addAllowedTypes('directory', ['string']);
+        $resolver->addAllowedTypes('whitelist_patterns', ['array']);
         $resolver->addAllowedTypes('exclude', ['array']);
         $resolver->addAllowedTypes('exclude_name', ['array']);
         $resolver->addAllowedTypes('exclude_path', ['array']);
@@ -67,15 +69,24 @@ public function canRunInContext(ContextInterface $context)
      */
     public function run(ContextInterface $context)
     {
+        /** @var array $config */
         $config = $this->getConfiguration();
-        $files = $context->getFiles()->extensions($config['triggered_by']);
+        /** @var array $whitelistPatterns */
+        $whitelistPatterns = $config['whitelist_patterns'];
+        /** @var array $extensions */
+        $extensions = $config['triggered_by'];
+
+        /** @var \GrumPHP\Collection\FilesCollection $files */
+        $files = $context->getFiles();
+        if (0 !== count($whitelistPatterns)) {
+            $files = $files->paths($whitelistPatterns);
+        }
+        $files = $files->extensions($extensions);
 
         if (0 === count($files)) {
             return TaskResult::createSkipped($this, $context);
         }
 
-        $config = $this->getConfiguration();
-
         $arguments = $this->processBuilder->createArgumentsForCommand('phpmnd');
         $arguments->addArgumentArray('--exclude=%s', $config['exclude']);
         $arguments->addArgumentArray('--exclude-file=%s', $config['exclude_name']);