From a0de0489154e6ec7a867717ecf3b166b43b3bcdf Mon Sep 17 00:00:00 2001
From: Joshua Ramon Enslin <joshua@museum-digital.de>
Date: Sat, 1 Nov 2025 14:02:40 +0100
Subject: [PATCH]  Identify time uncertainty for "etwa"

 Close #37
---
 src/NodaTimeSplitter.php            | 10 ++++++++++
 src/NodaUncertaintyHelper.php       |  2 ++
 tests/NodaTimeSplitterTest.php      | 13 +++++++++++++
 tests/NodaUncertaintyHelperTest.php |  1 +
 4 files changed, 26 insertions(+)

diff --git a/src/NodaTimeSplitter.php b/src/NodaTimeSplitter.php
index 8ab32bc..7d41375 100644
--- a/src/NodaTimeSplitter.php
+++ b/src/NodaTimeSplitter.php
@@ -98,6 +98,7 @@ final class NodaTimeSplitter {
         ", ",
         " und ",
         "nach ",
+        "nach dem ",
         "um ",
         "ca.",
         "ab ",
@@ -831,6 +832,15 @@ final class NodaTimeSplitter {
             }
         }
 
+        if (\preg_match("/^(Nach dem|nach dem)\ /", $datum)) {
+            if (($spacePos = \strpos($datum, " ", 6)) === false) {
+                return false;
+            }
+            if ($output = self::attempt_splitting(\substr($datum, $spacePos))) {
+                return self::_turn_noda_split_time_to_after($output);
+            }
+        }
+
         if (\preg_match("/\ (\(nach|nach)$/", $datum)) {
             if (($spacePos = \strpos($datum, " ")) === false) {
                 return false;
diff --git a/src/NodaUncertaintyHelper.php b/src/NodaUncertaintyHelper.php
index b5bd18e..861228a 100644
--- a/src/NodaUncertaintyHelper.php
+++ b/src/NodaUncertaintyHelper.php
@@ -107,6 +107,8 @@ final class NodaUncertaintyHelper {
         "za. ",
         "~",
         "circa ",
+        "etwa ",
+        "Etwa ",
         "gegen ",
         "um ",
         "Um ",
diff --git a/tests/NodaTimeSplitterTest.php b/tests/NodaTimeSplitterTest.php
index 82175df..cb9841a 100644
--- a/tests/NodaTimeSplitterTest.php
+++ b/tests/NodaTimeSplitterTest.php
@@ -776,6 +776,19 @@ final class NodaTimeSplitterTest extends TestCase {
         self::assertEquals($output->toTimeName(), "Vor 2020");
         self::assertEquals(NodaTimeSplitter::timePartsToCountingYear($output), 2020);
 
+        $output = NodaTimeSplitter::attempt_splitting("Nach dem 02.1.25 v. Chr");
+        self::assertNotEmpty($output);
+        self::assertEquals($output->toOldFormat(), [
+            0 => "-25",
+            1 => "?",
+            2 => "01",
+            3 => "02",
+            4 => "-",
+            5 => "Nach",
+        ]);
+        self::assertEquals($output->toTimeName(), "Nach 02.01.25 v. Chr.");
+        self::assertEquals(NodaTimeSplitter::timePartsToCountingYear($output), 25);
+
         $output = NodaTimeSplitter::attempt_splitting("Nach Januar 2020");
         self::assertNotEmpty($output);
         self::assertEquals($output->toOldFormat(), [
diff --git a/tests/NodaUncertaintyHelperTest.php b/tests/NodaUncertaintyHelperTest.php
index 9c40c0f..f95ad88 100644
--- a/tests/NodaUncertaintyHelperTest.php
+++ b/tests/NodaUncertaintyHelperTest.php
@@ -25,6 +25,7 @@ final class NodaUncertaintyHelperTest extends TestCase {
 
         return [
             'uncertainty prefix: "wohl 1950"' => ["wohl 1950", "1950", false],
+            'uncertainty prefix: "etwa 1950"' => ["etwa 1950", "1950", false],
             'uncertainty suffix: "1950?"' => ["1950?", "1950", false],
             'uncertainty suffix and superfluous chars: "1950 ?,"' => ["1950 ?,", "1950", false],
             'certain term with superfluous chars: "1950 ,"' => ["1950 ,", "1950", true],