Alllow access to Flutter engine, Dart & Skia versions in the Shell API.

build/git_revision.py

@@ -0,0 +1,43 @@
+#!/usr/bin/env python
+#
+# Copyright 2018 The Flutter Authors. All rights reserved.
+# Use of this source code is governed by a BSD-style license that can be
+# found in the LICENSE file.
+
+"""Get the Git HEAD revision of a specified Git repository."""
+
+import sys
+import subprocess
+import os
+import argparse
+
+def main():
+  parser = argparse.ArgumentParser();
+
+  parser.add_argument('--repository',
+                      action='store',
+                      help='Path to the Git repository.',
+                      required=True)
+
+  args = parser.parse_args()
+
+  repository = os.path.abspath(args.repository)
+
+  if not os.path.exists(repository):
+    exit -1
+
+  version = subprocess.check_output([
+    'git',
+    '-C',
+    repository,
+    'rev-parse',
+    '--short',
+    'HEAD',
+  ])
+
+  print version.strip()
+
+  return 0
+
+if __name__ == '__main__':
+  sys.exit(main())

ci/licenses_golden/licenses_flutter

@@ -609,6 +609,8 @@ FILE: ../../../flutter/shell/platform/android/platform_message_response_android.
 FILE: ../../../flutter/shell/platform/darwin/ios/framework/Source/FlutterAppDelegate_Internal.h
 FILE: ../../../flutter/shell/platform/darwin/ios/framework/Source/platform_message_response_darwin.h
 FILE: ../../../flutter/shell/platform/darwin/ios/framework/Source/platform_message_response_darwin.mm
+FILE: ../../../flutter/shell/version/version.cc
+FILE: ../../../flutter/shell/version/version.h
 ----------------------------------------------------------------------------------------------------
 Copyright 2018 The Flutter Authors. All rights reserved.
 

shell/common/BUILD.gn

@@ -106,6 +106,7 @@ source_set("common") {
   ]
 
   public_deps = [
+    "$flutter_root/shell/version",
     "$flutter_root/third_party/txt",
     "//third_party/tonic",
   ]

shell/common/switches.cc

@@ -11,6 +11,7 @@
 
 #include "flutter/fml/paths.h"
 #include "flutter/fml/string_view.h"
+#include "flutter/shell/version/version.h"
 
 // Include once for the default enum definition.
 #include "flutter/shell/common/switches.h"
@@ -42,6 +43,14 @@ namespace shell {
 void PrintUsage(const std::string& executable_name) {
   std::cerr << std::endl << "  " << executable_name << std::endl << std::endl;
 
+  std::cerr << "Versions: " << std::endl << std::endl;
+
+  std::cerr << "Flutter Engine Version: " << GetFlutterEngineVersion()
+            << std::endl;
+  std::cerr << "Skia Version: " << GetSkiaVersion() << std::endl;
+
+  std::cerr << "Dart Version: " << GetDartVersion() << std::endl << std::endl;
+
   std::cerr << "Available Flags:" << std::endl;
 
   const uint32_t column_width = 80;

shell/version/BUILD.gn

@@ -0,0 +1,18 @@
+# Copyright 2018 The Flutter Authors. All rights reserved.
+# Use of this source code is governed by a BSD-style license that can be
+# found in the LICENSE file.
+
+import("version.gni")
+
+source_set("version") {
+  sources = [
+    "version.cc",
+    "version.h",
+  ]
+
+  defines = [
+    "SHELL_FLUTTER_ENGINE_VERSION=\"$shell_engine_version\"",
+    "SHELL_SKIA_VERSION=\"$shell_skia_version\"",
+    "SHELL_DART_VERSION=\"$shell_dart_version\"",
+  ]
+}

shell/version/version.cc

@@ -0,0 +1,21 @@
+// Copyright 2018 The Flutter Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style license that can be
+// found in the LICENSE file.
+
+#include "flutter/shell/version/version.h"
+
+namespace shell {
+
+const char* GetFlutterEngineVersion() {
+  return SHELL_FLUTTER_ENGINE_VERSION;
+}
+
+const char* GetSkiaVersion() {
+  return SHELL_SKIA_VERSION;
+}
+
+const char* GetDartVersion() {
+  return SHELL_DART_VERSION;
+}
+
+}  // namespace shell

shell/version/version.gni

@@ -0,0 +1,44 @@
+# Copyright 2018 The Flutter Authors. All rights reserved.
+# Use of this source code is governed by a BSD-style license that can be
+# found in the LICENSE file.
+
+declare_args() {
+  shell_engine_version = ""
+
+  shell_skia_version = ""
+
+  shell_dart_version = ""
+}
+
+if (shell_engine_version == "") {
+  shell_engine_version_lines =
+      exec_script("$flutter_root/build/git_revision.py",
+                  [
+                    "--repository",
+                    rebase_path(flutter_root, "", flutter_root),
+                  ],
+                  "list lines")
+  shell_engine_version = shell_engine_version_lines[0]
+}
+
+if (shell_skia_version == "") {
+  shell_skia_version_lines =
+      exec_script("$flutter_root/build/git_revision.py",
+                  [
+                    "--repository",
+                    rebase_path("//third_party/skia", "", flutter_root),
+                  ],
+                  "list lines")
+  shell_skia_version = shell_skia_version_lines[0]
+}
+
+if (shell_dart_version == "") {
+  shell_dart_version_lines =
+      exec_script("$flutter_root/build/git_revision.py",
+                  [
+                    "--repository",
+                    rebase_path("//third_party/dart", "", flutter_root),
+                  ],
+                  "list lines")
+  shell_dart_version = shell_dart_version_lines[0]
+}

shell/version/version.h

@@ -0,0 +1,18 @@
+// Copyright 2018 The Flutter Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style license that can be
+// found in the LICENSE file.
+
+#ifndef FLUTTER_SHELL_COMMON_VERSION_H_
+#define FLUTTER_SHELL_COMMON_VERSION_H_
+
+namespace shell {
+
+const char* GetFlutterEngineVersion();
+
+const char* GetSkiaVersion();
+
+const char* GetDartVersion();
+
+}  // namespace shell
+
+#endif  // FLUTTER_SHELL_COMMON_VERSION_H_