Allow adding groups with spaces in them when wrapping groups names in quotation marks.

Signed-off-by: DL6ER <dl6er@dl6er.de>

scripts/pi-hole/php/groups.php

@@ -39,6 +39,37 @@ function JSON_error($message = null)
     echo json_encode($response);
 }
 
+function space_aware_explode($input)
+{
+    $ret = array();
+    $quoted = false;
+    $pos = 0;
+
+    // Loop over input string
+    for ($i = 0; $i < strlen($input); $i++)
+    {
+        // Get current character
+        $c = $input[$i];
+
+        // If current character is a space (or comma) and we're outside
+        // of a quoted region, we accept this character as separator
+        if (($c == ' ' || $c == ',') && !$quoted) {
+            $ret[] = str_replace('"', '', substr($input, $pos, $i - $pos));
+            $pos = $i+1;
+        }
+        elseif($c == '"' && !$quoted)
+            $quoted = true; // Quotation begins
+        elseif($c == '"' && $quoted)
+            $quoted = false; // Quotation ends here
+    }
+    // Get last element of the string
+    if ($pos > 0) {
+        $ret[] = substr($input, $pos);
+    }
+
+    return $ret;
+}
+
 if ($_POST['action'] == 'get_groups') {
     // List all available groups
     try {
@@ -54,7 +85,7 @@ if ($_POST['action'] == 'get_groups') {
 } elseif ($_POST['action'] == 'add_group') {
     // Add new group
     try {
-        $names = explode(' ', trim($_POST['name']));
+        $names = space_aware_explode(trim($_POST['name']));
         $total = count($names);
         $added = 0;
         $stmt = $db->prepare('INSERT INTO "group" (name,description) VALUES (:name,:desc)');