support adding another source-directory

Author: staabm

bin/infection-config.php

@@ -4,14 +4,19 @@
 error_reporting(E_ALL & ~E_DEPRECATED);
 ini_set('display_errors', 'stderr');
 
-$opts = getopt('', ['mutator-class:']);
-if (!$opts) {
-	echo "Usage: php ". $argv[0] ." --mutator-class='Infection\Mutator\Removal\MethodCallRemoval'\n";
+$opts = getopt('', ['source-directory::', 'mutator-class::']);
+if ($argc < 1) {
+	echo "Usage: php ". $argv[0] ." [--source-directory='another/path'] [--mutator-class='Infection\Mutator\Removal\MethodCallRemoval]'\n";
 	exit(1);
 }
+$addSourceDirectories = (array) ($opts['source-directory'] ?? []);
+$addMutatorClasses = (array) ($opts['mutator-class'] ?? []);
 
 $decoded = json_decode(file_get_contents(__DIR__.'/../resources/infection.json5'));
-foreach((array)$opts['mutator-class'] as $mutatorclass) {
+foreach($addSourceDirectories as $path) {
+	$decoded->source->directories[] = $path;
+}
+foreach($addMutatorClasses as $mutatorclass) {
 	$decoded->mutators->$mutatorclass = true;
 }