Merge pull request #1895 from abarth/internalize_dart

Internalize our dependency on the Dart SDK

bin/cache/.gitignore

 *.snapshot
 *.stamp
 artifacts
+dart-sdk

bin/cache/dart-sdk.version

+1.14.1

bin/cache/update_dart_sdk.sh

+#!/bin/bash
+# Copyright 2016 The Chromium Authors. All rights reserved.
+# Use of this source code is governed by a BSD-style license that can be
+# found in the LICENSE file.
+
+DART_SDK_PATH="$FLUTTER_ROOT/bin/cache/dart-sdk"
+DART_SDK_STAMP_PATH="$FLUTTER_ROOT/bin/cache/dart-sdk.stamp"
+DART_SDK_VERSION=`cat "$FLUTTER_ROOT/bin/cache/dart-sdk.version"`
+
+if [ ! -f "$DART_SDK_STAMP_PATH" ] || [ "$DART_SDK_VERSION" != `cat "$DART_SDK_STAMP_PATH"` ]; then
+  echo Downloading Dart SDK $DART_SDK_VERSION...
+
+  case "$(uname -s)" in
+    Darwin)
+      DART_ZIP_NAME="dartsdk-macos-x64-release.zip"
+      ;;
+    Linux)
+      DART_ZIP_NAME="dartsdk-linux-x64-release.zip"
+      ;;
+    *)
+      echo "Unknown operating system. Cannot install Dart SDK."
+      exit 1
+      ;;
+  esac
+
+  DART_SDK_URL="http://gsdview.appspot.com/dart-archive/channels/stable/raw/$DART_SDK_VERSION/sdk/$DART_ZIP_NAME"
+
+  rm -rf "$DART_SDK_PATH"
+  mkdir -p "$DART_SDK_PATH"
+  DART_SDK_ZIP="$FLUTTER_ROOT/bin/cache/dart-sdk.zip"
+
+  curl -C - --location -o "$DART_SDK_ZIP" "$DART_SDK_URL"
+  unzip -o -q "$DART_SDK_ZIP" -d "$FLUTTER_ROOT/bin/cache"
+  rm "$DART_SDK_ZIP"
+  echo $DART_SDK_VERSION > "$DART_SDK_STAMP_PATH"
+fi

bin/flutter

@@ -7,26 +7,38 @@ set -e
 
 export FLUTTER_ROOT=$(dirname $(dirname "${BASH_SOURCE[0]}"))
 FLUTTER_TOOLS_DIR="$FLUTTER_ROOT/packages/flutter_tools"
-FLUTTER_DIR="$FLUTTER_ROOT/packages/flutter"
 SNAPSHOT_PATH="$FLUTTER_ROOT/bin/cache/flutter_tools.snapshot"
 STAMP_PATH="$FLUTTER_ROOT/bin/cache/flutter_tools.stamp"
 SCRIPT_PATH="$FLUTTER_TOOLS_DIR/bin/flutter_tools.dart"
+DART_SDK_PATH="$FLUTTER_ROOT/bin/cache/dart-sdk"
 
-# TODO(abarth): We shouldn't require dart to be on the user's path.
-DART=dart
+DART="$DART_SDK_PATH/bin/dart"
 
 REVISION=`(cd "$FLUTTER_ROOT"; git rev-parse HEAD)`
 if [ ! -f "$SNAPSHOT_PATH" ] || [ ! -f "$STAMP_PATH" ] || [ `cat "$STAMP_PATH"` != "$REVISION" ] || [ "$FLUTTER_TOOLS_DIR/pubspec.yaml" -nt "$FLUTTER_TOOLS_DIR/pubspec.lock" ]; then
-  echo Updating flutter tool...
-  (cd "$FLUTTER_TOOLS_DIR"; pub get > /dev/null)
-  (cd "$FLUTTER_DIR"; pub get > /dev/null)  # Allows us to check if sky_engine's REVISION is correct
-  $DART --snapshot="$SNAPSHOT_PATH" --package-root="$FLUTTER_TOOLS_DIR/packages" "$SCRIPT_PATH"
-  echo -n $REVISION > "$STAMP_PATH"
+  "$FLUTTER_ROOT/bin/cache/update_dart_sdk.sh"
+
+  echo Building flutter tool...
+  FLUTTER_DIR="$FLUTTER_ROOT/packages/flutter"
+  PUB="$DART_SDK_PATH/bin/pub"
+
+  (cd "$FLUTTER_TOOLS_DIR"; "$PUB" get > /dev/null)
+  (cd "$FLUTTER_DIR"; "$PUB" get > /dev/null)  # Allows us to check if sky_engine's REVISION is correct
+  "$DART" --snapshot="$SNAPSHOT_PATH" --package-root="$FLUTTER_TOOLS_DIR/packages" "$SCRIPT_PATH"
+  echo $REVISION > "$STAMP_PATH"
 fi
 
+# Add our internalized version of the Dart SDK to the path ahead of any other
+# versions that might be installed on this machine.
+#
+# TODO(abarth): We should teach flutter_tools to our version of the Dart SDK
+#               explicitly instead of relying upon the PATH.
+#
+export PATH="$DART_SDK_PATH/bin:$PATH"
+
 set +e
 
-$DART "$SNAPSHOT_PATH" "$@"
+"$DART" "$SNAPSHOT_PATH" "$@"
 
 # The VM exits with code 253 if the snapshot version is out-of-date.
 # If it is, we need to snapshot it again.
@@ -37,5 +49,5 @@ fi
 
 set -e
 
-$DART --snapshot="$SNAPSHOT_PATH" --package-root="$FLUTTER_TOOLS_DIR/packages" "$SCRIPT_PATH"
-$DART "$SNAPSHOT_PATH" "$@"
+"$DART" --snapshot="$SNAPSHOT_PATH" --package-root="$FLUTTER_TOOLS_DIR/packages" "$SCRIPT_PATH"
+"$DART" "$SNAPSHOT_PATH" "$@"