From d9ba42f26b3b038a91068135604f779c357c3a05 Mon Sep 17 00:00:00 2001
From: Moritz <mosum@google.com>
Date: Thu, 12 Dec 2024 16:00:39 +0100
Subject: [PATCH] Don't check licenses of generated files

---
 pkgs/firehose/lib/src/health/license.dart            | 12 ++++++++++--
 .../test_repo/pkgs/package2/lib/anotherLib.dart      |  3 +++
 2 files changed, 13 insertions(+), 2 deletions(-)

diff --git a/pkgs/firehose/lib/src/health/license.dart b/pkgs/firehose/lib/src/health/license.dart
index 18a1e433..8492ee46 100644
--- a/pkgs/firehose/lib/src/health/license.dart
+++ b/pkgs/firehose/lib/src/health/license.dart
@@ -26,8 +26,8 @@ Future<List<String>> getFilesWithoutLicenses(
         if (ignoredFiles.none((glob) =>
             glob.matches(path.relative(file.path, from: repositoryDir.path)))) {
           var fileContents = File(file.path).readAsStringSync();
-          var fileContainsCopyright = fileContents.contains('// Copyright (c)');
-          if (!fileContainsCopyright) {
+          if (!fileIsGenerated(fileContents) &&
+              !fileContainsCopyright(fileContents)) {
             print(relativePath);
             return relativePath;
           }
@@ -40,3 +40,11 @@ Future<List<String>> getFilesWithoutLicenses(
 Done, found ${filesWithoutLicenses.length} files without license headers''');
   return filesWithoutLicenses;
 }
+
+bool fileIsGenerated(String fileContents) => fileContents
+    .split('\n')
+    .takeWhile((line) => line.startsWith('//') || line.isEmpty)
+    .any((line) => line.toLowerCase().contains('generate'));
+
+bool fileContainsCopyright(String fileContents) =>
+    fileContents.contains('// Copyright (c)');
diff --git a/pkgs/firehose/test_data/test_repo/pkgs/package2/lib/anotherLib.dart b/pkgs/firehose/test_data/test_repo/pkgs/package2/lib/anotherLib.dart
index af52fa18..5bee8739 100644
--- a/pkgs/firehose/test_data/test_repo/pkgs/package2/lib/anotherLib.dart
+++ b/pkgs/firehose/test_data/test_repo/pkgs/package2/lib/anotherLib.dart
@@ -1,3 +1,6 @@
+// SOME COMMENT
+// THIS IS A GENERATED FILE
+
 int calculateUnused() {
   return 6 * 7;
 }