Helper to resolve dart version for clients of analytics (#233)

* Helper method added to parse dart version

* Additional documentation

* Export helper + update changelog

* Prepare to publish

pkgs/unified_analytics/CHANGELOG.md

@@ -1,7 +1,8 @@
-## 5.8.2-wip
+## 5.8.2
 
 - Added new event `Event.analyticsException` to track internal errors for this package
 - Redirecting the `Analytics.test` factory to return an instance of `FakeAnalytics`
+- Exposing new helper function that can be used to parse the Dart SDK version
 
 ## 5.8.1
 

pkgs/unified_analytics/lib/src/constants.dart

@@ -82,7 +82,7 @@ const int kLogFileLength = 2500;
 const String kLogFileName = 'dart-flutter-telemetry.log';
 
 /// The current version of the package, should be in line with pubspec version.
-const String kPackageVersion = '5.8.2-wip';
+const String kPackageVersion = '5.8.2';
 
 /// The minimum length for a session.
 const int kSessionDurationMinutes = 30;

pkgs/unified_analytics/lib/src/utils.dart

@@ -215,6 +215,34 @@ bool legacyOptOut({required FileSystem fs, required Directory home}) {
   return false;
 }
 
+/// Helper method that can be used to resolve the Dart SDK version for clients
+/// of package:unified_analytics.
+///
+/// Input [versionString] for this method should be the returned string from
+/// [io.Platform.version].
+///
+/// For tools that don't already have a method for resolving the Dart
+/// SDK version in semver notation, this helper can be used. This uses
+/// the [io.Platform.version] to parse the semver.
+///
+/// Example for stable version:
+/// `3.3.0 (stable) (Tue Feb 13 10:25:19 2024 +0000) on "macos_arm64"` into
+/// `3.3.0`.
+///
+/// Example for non-stable version:
+/// `2.1.0-dev.8.0.flutter-312ae32` into `2.1.0 (build 2.1.0-dev.8.0 312ae32)`.
+String parseDartSDKVersion(String versionString) {
+  versionString = versionString.trim();
+  final justVersion = versionString.split(' ')[0];
+
+  // For non-stable versions, this regex will include build information
+  return justVersion.replaceFirstMapped(RegExp(r'(\d+\.\d+\.\d+)(.+)'),
+      (Match match) {
+    final noFlutter = match[2]!.replaceAll('.flutter-', ' ');
+    return '${match[1]} (build ${match[1]}$noFlutter)'.trim();
+  });
+}
+
 /// Will use two strings to produce a double for applying a sampling
 /// rate for [Survey] to be returned to the user.
 double sampleRate(String string1, String string2) =>

pkgs/unified_analytics/lib/unified_analytics.dart

@@ -8,3 +8,4 @@ export 'src/enums.dart' show DashTool;
 export 'src/event.dart' show Event;
 export 'src/log_handler.dart' show LogFileStats;
 export 'src/survey_handler.dart' show Survey, SurveyButton, SurveyHandler;
+export 'src/utils.dart' show parseDartSDKVersion;

pkgs/unified_analytics/pubspec.yaml

@@ -4,7 +4,7 @@ description: >-
   to Google Analytics.
 # When updating this, keep the version consistent with the changelog and the
 # value in lib/src/constants.dart.
-version: 5.8.2-wip
+version: 5.8.2
 repository: https://github.com/dart-lang/tools/tree/main/pkgs/unified_analytics
 
 environment:

pkgs/unified_analytics/test/unified_analytics_test.dart

@@ -1276,4 +1276,21 @@ Privacy Policy (https://policies.google.com/privacy).
     expect(eventList.contains(eventToMatch), true);
     expect(eventList.where((element) => element == eventToMatch).length, 1);
   });
+
+  group('Unit tests for util dartSDKVersion', () {
+    test('parses correctly for non-stable version', () {
+      final originalVersion =
+          '3.4.0-148.0.dev (dev) (Thu Feb 15 12:05:45 2024 -0800) on "macos_arm64"';
+
+      expect(parseDartSDKVersion(originalVersion),
+          '3.4.0 (build 3.4.0-148.0.dev)');
+    });
+
+    test('parses correctly for stable version', () {
+      final originalVersion =
+          '3.3.0 (stable) (Tue Feb 13 10:25:19 2024 +0000) on "macos_arm64"';
+
+      expect(parseDartSDKVersion(originalVersion), '3.3.0');
+    });
+  });
 }