an innitial implementation of the CSV dump of federations - to be polished

lib/API.php

@@ -454,7 +454,7 @@ class API {
     private function action_list_feds() {
         $this->description([
             'header' => "List federation details (code, name, contact email, registration authority string, status).",
-            'supportedFormats' => ['json', 'print_r'],
+            'supportedFormats' => ['json', 'csv', 'print_r'],
             'arguments' => [
                 [
                     'arg' => 'opt',
@@ -487,6 +487,17 @@ class API {
         $edugain = new eduGAIN($this->opts['opt']);
         $F = $edugain->FEDS;
         ksort($F, SORT_STRING | SORT_FLAG_CASE);
+        
+
+        if ($this->format == 'csv') {
+            $out = '';
+            foreach ($F as $fed => $A) {
+                $ln = $fed . "\t" . implode("\t", $A) . "\n"; 
+                $out .= $ln;
+            }
+            return($out);
+        }
+
         foreach ($F as $fed => $A) {
             $out[$fed] = ['name' => $A['name'],
                 'email' => $A['contact_email'],