Add new class MDConcCertainty

src/MDConcCertainty.php

@@ -0,0 +1,43 @@
+<?PHP
+/**
+ * Mapping for certainty-expressing fields to certainty in events.
+ *
+ * @author Joshua Ramon Enslin <joshua@museum-digital.de>
+ */
+declare(strict_types = 1);
+
+/**
+ * Mapping for certainty-expressing fields to certainty in events.
+ */
+final class MDConcCertainty implements MDImporterConcordanceListInterface {
+
+    private const MAPPING = [
+
+        // Uncertain
+
+        'fraglich' => false,
+
+        // Certain
+
+        'sicher' => true,
+        'by' => true,
+
+    ];
+
+    /**
+     * Require a function for getting the concordance target.
+     *
+     * @param string $input Input string.
+     *
+     * @return boolean
+     */
+    public static function getConcordanceTarget(string $input):bool {
+
+        if (!isset(self::MAPPING[$input])) {
+            throw new MDImporterMissingConcordance("Unknown certainty identifier: " . $input);
+        }
+
+        return self::MAPPING[$input];
+
+    }
+}