public function buildLinters()
 {
     // This is a list of paths which the user wants to lint. Either they
     // provided them explicitly, or arc figured them out from a commit or set
     // of changes. The engine needs to return a list of ArcanistLinter objects,
     // representing the linters which should be run on these files.
     $paths = $this->getPaths();
     //echo('Foobar');
     // $paths = ['./src/inbox'];
     // The ArcanistPyLintLinter runs "PyLint" (an open source python linter) on
     // files you give it. There are several linters available by default like
     // this one which you can use out of the box, or you can write your own.
     // Linters are responsible for actually analyzing the contents of a file
     // and raising warnings and errors.
     $pyflakes_linter = new ArcanistPyFlakesLinter();
     $pylint_linter = new MGArcanistPyLintLinter();
     $pep8_linter = new ArcanistPEP8Linter();
     // Remove any paths that don't exist before we add paths to linters. We want
     // to do this for linters that operate on file contents because the
     // generated list of paths will include deleted paths when a file is
     // removed.
     foreach ($paths as $key => $path) {
         if (!$this->pathExists($path)) {
             unset($paths[$key]);
         }
     }
     foreach ($paths as $path) {
         if (!preg_match('/\\.py$/', $path)) {
             // This isn't a python file, so don't try to apply the PyLint linter
             // to it.
             continue;
         }
         if (preg_match('@^externals/@', $path)) {
             // This is just an example of how to exclude a path so it doesn't get
             // linted. If you put third-party code in an externals/ directory, you
             // can just have your lint engine ignore it.
             continue;
         }
         // Add the path, to tell the linter it should examine the source code
         // to try to find problems.
         $pyflakes_linter->addPath($path);
         $pylint_linter->addPath($path);
         $pep8_linter->addPath($path);
     }
     // We only built one linter, but you can build more than one (e.g., a
     // Javascript linter for JS), and return a list of linters to execute. You
     // can also add a path to more than one linter (for example, if you want
     // to run a Python linter and a more general text linter on every .py file).
     return array($pyflakes_linter, $pylint_linter, $pep8_linter);
 }
 public function buildPythonLinters($paths)
 {
     $pyflakes_linter = new ArcanistPyFlakesLinter();
     $pep8_linter = new ArcanistPEP8Linter();
     $linters = array();
     $linters[] = $pyflakes_linter;
     $linters[] = $pep8_linter;
     foreach ($paths as $path) {
         if (preg_match('/\\.py$/', $path)) {
             $pyflakes_linter->addPath($path);
             $pyflakes_linter->addData($path, $this->loadData($path));
             $pep8_linter->addPath($path);
             $pep8_linter->addData($path, $this->loadData($path));
         }
     }
     return $linters;
 }