Time splitter: Handle first/second half

Close #31

src/NodaTimeSplitter.php

@@ -1101,6 +1101,15 @@ final class NodaTimeSplitter {
 
         if (empty($datum)) return '';
 
+        if (\preg_match("/^1\.\ (Halbjahr|Hälfte)\ [0-9]{4}$/", $datum)) {
+            $year = substr($datum, -4);
+            return "Januar $year-Juni $year";
+        }
+        if (\preg_match("/^2\.\ (Halbjahr|Hälfte)\ [0-9]{4}$/", $datum)) {
+            $year = substr($datum, -4);
+            return "Juli $year-Dezember $year";
+        }
+
         $inputLength = strlen($datum);
 
         // Hungarian year and month until month

tests/NodaNameSplitterTest.php

@@ -6,12 +6,14 @@
  */
 declare(strict_types = 1);
 use PHPUnit\Framework\TestCase;
+use PHPUnit\Framework\Attributes\CoversClass;
+use PHPUnit\Framework\Attributes\Small;
 
 /**
  * This script contains tests for the actor name splitter.
- *
- * @covers \NodaNameSplitter
  */
+#[Small]
+#[CoversClass(\NodaIDGetter::class)]
 final class NodaNameSplitterTest extends TestCase {
     /**
      * Test to check whether the HTML page is correctly generated.

tests/NodaTimeSplitterTest.php

@@ -509,6 +509,18 @@ final class NodaTimeSplitterTest extends TestCase {
                 "counting_time_day" => "01",
                 "counting_time_bcce" => "+",
             ],
+            "1. Halbjahr 1950" => [
+                'start_name' => "Januar 1950",
+                'end_name' => "Juni 1950",
+                "start_year" => '1950',
+                "end_year" => '1950',
+                'start_date' => '1950-01-01',
+                'end_date' => '1950-06-31',
+                "counting_time_year" => "1950",
+                "counting_time_month" => "04",
+                "counting_time_day" => "02",
+                "counting_time_bcce" => "+",
+            ],
         ] as $in => $out) {
             $output[$in] = [$in, $out];
         }