Imported code from old repository

2022-11-22 15:46:36 +01:00
parent 976fdc0199
commit 77cf9e05f1
91 changed files with 18969 additions and 2 deletions
@@ -0,0 +1,59 @@
+<?php
+
+/* This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
+ 
+namespace CloudObjects\PhpMAE;
+
+use ML\IRI\IRI;
+use CloudObjects\SDK\ObjectRetriever, CloudObjects\SDK\COIDParser,
+    CloudObjects\SDK\NodeReader;
+
+/**
+ * The Config Loader helps phpMAE classes to load configuration
+ * data from different CloudObjects objects.
+ */
+class ConfigLoader {
+
+    private $validSources;
+    private $retriever;
+    private $reader;
+
+    public function __construct(array $validSources, ObjectRetriever $retriever) {
+        foreach ($validSources as $v) {
+            if (!is_a($v, IRI::class))
+                throw new \Exception("Invalid sources!");
+        }
+        $this->validSources = $validSources;
+        $this->retriever = $retriever;
+        $this->reader = new NodeReader([]);
+    }
+
+    /**
+     * Get the value for a key, trying the sources in the order given by priorities.
+     */
+    public function get($key, $priorities, $default = null) {
+        foreach ($priorities as $p) {
+            if (isset($this->validSources[$p])) {
+                $object = $this->retriever->getObject($this->validSources[$p]);
+                if (!isset($object))
+                    continue;
+            } else
+            if (substr($p, -10) == '.namespace' && isset($this->validSources[substr($p, 0, -10)])) {
+                $object = $this->retriever->getObject(
+                    COIDParser::getNamespaceCOID($this->validSources[substr($p, 0, -10)]));
+                if (!isset($object))
+                    continue;
+            }
+            if (!isset($object))
+                continue;
+            $value = $this->reader->getFirstValueString($object, $key);
+            if (isset($value))
+                return $value;
+    }
+
+        return $default; // not found
+    }
+
+}