support for unicode character case-sensitivity when searching

src/Concerns/LogReader/CanFilterUsingIndex.php

@@ -90,7 +90,7 @@ protected function setQuery(?string $query = null): static
             $this->only(null);
             $this->onlyShowIndex = intval(explode(':', $query)[1]);
         } elseif (! empty($query)) {
-            $query = '~'.$query.'~i';
+            $query = '~'.$query.'~iu';
 
             Utils::validateRegex($query);
 

src/Readers/IndexedLogReader.php

@@ -96,13 +96,15 @@ public function scan(?int $maxBytesToScan = null, bool $force = false): static
             $lvl = null;
 
             try {
+                // first, let's see if it matches the new log entry. Does not take search query into account yet.
                 $lineMatches = $this->logClass::matches(trim($line), $ts, $lvl);
             } catch (SkipLineException $exception) {
                 continue;
             }
 
             if ($lineMatches) {
                 if ($currentLog !== '') {
+                    // Now, let's see if it matches the search query if set.
                     if (is_null($this->query) || preg_match($this->query, $currentLog)) {
                         $logIndex->addToIndex($currentLogPosition, $currentTimestamp ?? 0, $currentLogLevel, $currentIndex);
                     }

tests/Feature/LogsControllerTest.php

@@ -14,3 +14,50 @@
 
     expect($response->json('logs'))->toHaveCount(count($logEntries));
 });
+
+test('simple characters can be searched case-insensitive', function () {
+    $logEntries = [
+        makeLaravelLogEntry(message: 'error'),
+        makeLaravelLogEntry(message: 'Error'),
+        makeLaravelLogEntry(message: 'eRrOr'),
+        makeLaravelLogEntry(message: 'ERROR'),
+        makeLaravelLogEntry(message: 'simple text'),
+    ];
+    $file = generateLogFile('logsearchtest.log', implode(PHP_EOL, $logEntries));
+
+    // first, just to be sure that we're getting all the logs without any query
+    $response = getJson(route('log-viewer.logs', ['file' => $file->identifier]));
+    expect($response->json('logs'))->toHaveCount(count($logEntries));
+
+    // now, with the query. Re-instantiate the log reader to make sure we don't have anything cached.
+    \Opcodes\LogViewer\Readers\IndexedLogReader::clearInstance($file);
+    $response = getJson(route('log-viewer.logs', [
+        'file' => $file->identifier,
+        'query' => 'error',
+    ]));
+    expect($response->json('logs'))->toHaveCount(4);
+
+});
+
+test('unicode characters can be searched case-insensitive', function () {
+    $logEntries = [
+        makeLaravelLogEntry(message: 'ошибка'),
+        makeLaravelLogEntry(message: 'Ошибка'),
+        makeLaravelLogEntry(message: 'ошибкА'),
+        makeLaravelLogEntry(message: 'ОШИБКА'),
+        makeLaravelLogEntry(message: 'simple text'),
+    ];
+    $file = generateLogFile('logunicodetest.log', implode(PHP_EOL, $logEntries));
+
+    // first, just to be sure that we're getting all the logs without any query
+    $response = getJson(route('log-viewer.logs', ['file' => $file->identifier]));
+    expect($response->json('logs'))->toHaveCount(count($logEntries));
+
+    // now, with the query. Re-instantiate the log reader to make sure we don't have anything cached.
+    \Opcodes\LogViewer\Readers\IndexedLogReader::clearInstance($file);
+    $response = getJson(route('log-viewer.logs', [
+        'file' => $file->identifier,
+        'query' => 'ошибка',
+    ]));
+    expect($response->json('logs'))->toHaveCount(4);
+});