Add support for -R option

Author: sandermarechal

phpctags

@@ -12,7 +12,7 @@ if (is_dir($vendor = __DIR__ . '/vendor')) {
     );
 }
 
-$options = getopt('af:',array(
+$options = getopt('af:R',array(
     'append::',
     'debug',
     'excmd::',
@@ -57,7 +57,28 @@ if(isset($options['append'])) {
 }
 
 $ctags = new PHPCtags();
-$result = $ctags->export($file, $options);
+$result = '';
+if (isset($options['R'])) {
+    $iterator = new RecursiveIteratorIterator(
+        new RecursiveDirectoryIterator(
+            $file,
+            FilesystemIterator::SKIP_DOTS |
+            FilesystemIterator::FOLLOW_SYMLINKS
+        )
+    );
+
+    $extensions = array('.php', '.php3', '.php4', '.php5', '.phps');
+
+    foreach ($iterator as $filename) {
+        if (!in_array(substr($filename, strrpos($filename, '.')), $extensions)) {
+            continue;
+        }
+
+        $result .= $ctags->export($filename, $options);
+    }
+} else {
+    $result = $ctags->export($file, $options);
+}
 
 if (isset($options['f']) && $options['f'] !== '-') {
     $tagfile = fopen($options['f'], isset($options['a']) ? 'a' : 'w');