Add support for custom LibGuides limits.

config/vufind/LibGuides.ini

@@ -4,4 +4,13 @@
 timeout = 30
 
 ; Your institution id
-iid = my-id
\ No newline at end of file
+iid = my-id
+
+; This section controls the result limit options for search results. default_limit
+; sets the default number of results per page. limit_options is a comma-separated
+; list of numbers to be presented to the end-user. If only one limit is required,
+; set default_limit and leave limit_options commented out.
+; WARNING: using large limits may require you to raise your PHP memory limits to
+; avoid errors.
+default_limit        = 20
+;limit_options        = 10,20,40,60,80,100

module/VuFind/src/VuFind/Search/LibGuides/Options.php

@@ -47,6 +47,14 @@ class Options extends \VuFind\Search\Base\Options
     {
         $this->searchIni = $this->facetsIni = 'LibGuides';
         parent::__construct($configLoader);
+        $searchSettings = $configLoader->get($this->searchIni);
+        if (isset($searchSettings->General->default_limit)) {
+            $this->defaultLimit = $searchSettings->General->default_limit;
+        }
+        if (isset($searchSettings->General->limit_options)) {
+            $this->limitOptions
+                = explode(",", $searchSettings->General->limit_options);
+        }
     }
 
     /**