#!/bin/bash # Copyright 2015 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. # ---------------------------------- NOTE ---------------------------------- # # # Please keep the logic in this file consistent with the logic in the # `flutter.bat` script in the same directory to ensure that Flutter continues # to work across all platforms! # # -------------------------------------------------------------------------- # set -e function follow_links() { cd -P "${1%/*}" file="$PWD/${1##*/}" while [ -h "$file" ]; do # On Mac OS, readlink -f doesn't work. cd -P "${file%/*}" file="$(readlink "$file")" cd -P "${file%/*}" file="$PWD/${file##*/}" done echo "$PWD/${file##*/}" } # Convert a filesystem path to a format usable by Dart's URI parser. function path_uri() { # Reduce multiple leading slashes to a single slash. echo "$1" | sed -E -e "s,^/+,/," } PROG_NAME="$(path_uri "$(follow_links "$BASH_SOURCE")")" BIN_DIR="$(cd "${PROG_NAME%/*}" ; pwd -P)" export FLUTTER_ROOT="$(cd "${BIN_DIR}/.." ; pwd -P)" FLUTTER_TOOLS_DIR="$FLUTTER_ROOT/packages/flutter_tools" SNAPSHOT_PATH="$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="$FLUTTER_ROOT/bin/cache/dart-sdk" DART="$DART_SDK_PATH/bin/dart" PUB="$DART_SDK_PATH/bin/pub" # Test if Git is available on the Host if ! hash git 2>/dev/null; then echo "Error: Unable to find git in your PATH." exit 1 fi # Test if the flutter directory is a git clone (otherwise git rev-parse HEAD would fail) if [ ! -d "$FLUTTER_ROOT/.git" ]; then echo "Error: The Flutter directory is not a clone of the GitHub project." exit 1 fi # To debug the tool, you can uncomment the following line to enable checked mode and set an observatory port: # FLUTTER_TOOL_ARGS="--observe=65432 --checked" ( if hash flock 2>/dev/null; then flock 3 # ensures that we don't simultaneously update Dart in multiple parallel instances # some platforms (e.g. Mac) don't have flock or any reliable alternative fi REVISION=`(cd "$FLUTTER_ROOT"; git rev-parse HEAD)` if [ ! -f "$SNAPSHOT_PATH" ] || [ ! -s "$STAMP_PATH" ] || [ `cat "$STAMP_PATH"` != "$REVISION" ] || [ "$FLUTTER_TOOLS_DIR/pubspec.yaml" -nt "$FLUTTER_TOOLS_DIR/pubspec.lock" ]; then mkdir -p "$FLUTTER_ROOT/bin/cache" touch "$FLUTTER_ROOT/bin/cache/.dartignore" "$FLUTTER_ROOT/bin/internal/update_dart_sdk.sh" echo Building flutter tool... (cd "$FLUTTER_TOOLS_DIR"; "$PUB" upgrade --verbosity=error --no-packages-dir) "$DART" --snapshot="$SNAPSHOT_PATH" --packages="$FLUTTER_TOOLS_DIR/.packages" "$SCRIPT_PATH" echo $REVISION > "$STAMP_PATH" fi ) 3< "$PROG_NAME" set +e "$DART" $FLUTTER_TOOL_ARGS "$SNAPSHOT_PATH" "$@" # The VM exits with code 253 if the snapshot version is out-of-date. # If it is, we need to snapshot it again. EXIT_CODE=$? if [ $EXIT_CODE != 253 ]; then exit $EXIT_CODE fi set -e "$DART" --snapshot="$SNAPSHOT_PATH" --packages="$FLUTTER_TOOLS_DIR/.packages" "$SCRIPT_PATH" "$DART" $FLUTTER_TOOL_ARGS "$SNAPSHOT_PATH" "$@"