Convert relative site URLs in release notes

packages/devtools_app/lib/src/framework/release_notes/release_notes.dart

@@ -31,7 +31,10 @@ bool debugTestReleaseNotes = false;
 const String? _debugReleaseNotesUrl = null;
 
 const releaseNotesKey = Key('release_notes');
-const _unsupportedPathSyntax = '{{site.url}}';
+final _baseUrlRelativeMarkdownLinkPattern = RegExp(
+ r'(\[.*?]\()(/.*\s*)',
+ multiLine: true,
+);
 const _releaseNotesPath = '/f/devtools-releases.json';
 final _flutterDocsSite = Uri.https('docs.flutter.dev');
 
@@ -97,10 +100,11 @@ class ReleaseNotesController extends SidePanelController {
  final debugUri = Uri.parse(debugUrl);
  final releaseNotesMarkdown = await http.read(debugUri);
 
- // Update image links to use debug/testing URL.
- markdown.value = releaseNotesMarkdown.replaceAll(
- _unsupportedPathSyntax,
- debugUri.replace(path: '').toString(),
+ // Update the base-url-relative links in the file to
+ // absolute links using the debug/testing URL.
+ markdown.value = _convertBaseUrlRelativeLinks(
+ releaseNotesMarkdown,
+ debugUri.replace(path: ''),
  );
 
  toggleVisibility(true);
@@ -145,7 +149,7 @@ class ReleaseNotesController extends SidePanelController {
  // release notes (e.g. 2.11.4 -> 2.11.3 -> 2.11.2 -> ...).
  while (patchToCheck >= minimumPatch) {
  final releaseToCheck = '$majorMinor.$patchToCheck';
- if (releases[releaseToCheck] case final String releaseNotePath) {
+ if (releases[releaseToCheck] case final releaseNotePath?) {
  final String releaseNotesMarkdown;
  try {
  releaseNotesMarkdown = await http.read(
@@ -161,11 +165,10 @@ class ReleaseNotesController extends SidePanelController {
  continue;
  }
 
- // Replace the {{site.url}} template syntax that the
- // Flutter docs website uses to specify site URLs.
- markdown.value = releaseNotesMarkdown.replaceAll(
- _unsupportedPathSyntax,
- _flutterDocsSite.toString(),
+ // Update the base-url-relative links in the file to absolute links.
+ markdown.value = _convertBaseUrlRelativeLinks(
+ releaseNotesMarkdown,
+ _flutterDocsSite,
  );
 
  toggleVisibility(true);
@@ -188,13 +191,21 @@ class ReleaseNotesController extends SidePanelController {
  return;
  }
 
+ /// Convert all site-base-url relative links in [markdownContent]
+ /// to absolute links from the specified [baseUrl].
+ String _convertBaseUrlRelativeLinks(String markdownContent, Uri baseUrl) =>
+ markdownContent.replaceAllMapped(
+ _baseUrlRelativeMarkdownLinkPattern,
+ (m) => '${m[1]}${baseUrl.toString()}${m[2]}',
+ );
+
  /// Retrieve and parse the release note index from the
  /// Flutter website at [_flutterDocsSite]/[_releaseNotesPath].
  ///
  /// Calls [_emptyAndClose] and returns `null` if
  /// the retrieval or parsing fails.
  @visibleForTesting
- Future<Map<String, Object?>?> retrieveReleasesFromIndex() async {
+ Future<Map<String, String>?> retrieveReleasesFromIndex() async {
  final Map<String, Object?> releaseIndex;
  try {
  final releaseIndexString = await http.read(releaseIndexUrl);
@@ -212,7 +223,7 @@ class ReleaseNotesController extends SidePanelController {
  );
  return null;
  }
- return releaseIndex;
+ return releases.cast<String, String>();
  }
 
  /// Set the release notes viewer as having no contents, hidden,

packages/devtools_app/release_notes/NEXT_RELEASE_NOTES.md

@@ -6,7 +6,7 @@ This is draft for future release notes, that are going to land on
 The 2.36.0 release of the Dart and Flutter DevTools
 includes the following changes among other general improvements.
 To learn more about DevTools, check out the
-[DevTools overview]({{site.url}}/tools/devtools/overview).
+[DevTools overview](/tools/devtools/overview).
 
 ## General updates
 

packages/devtools_app/release_notes/helpers/release_notes_template.md

@@ -6,7 +6,7 @@ This is draft for future release notes, that are going to land on
 The <number> release of the Dart and Flutter DevTools
 includes the following changes among other general improvements.
 To learn more about DevTools, check out the
-[DevTools overview]({{site.url}}/tools/devtools/overview).
+[DevTools overview](/tools/devtools/overview).
 
 ## General updates
 

packages/devtools_app/test/shared/release_notes_test.dart

@@ -64,11 +64,9 @@ void main() {
  test('Parses expected index format correctly', () async {
  await http.runWithClient(
  () async {
- final response = await controller.retrieveReleasesFromIndex();
- expect(response!.keys, hasLength(2));
- expect(response['latest'], equals('2.32.0'));
+ final releaseIndex = await controller.retrieveReleasesFromIndex();
  expect(
- response['releases'],
+ releaseIndex,
  equals({
  '2.32.0':
  '/tools/devtools/release-notes/release-notes-2.32.0-src.md',