65 lines
2.2 KiB
Bash
Executable File
65 lines
2.2 KiB
Bash
Executable File
#!/bin/bash
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# Copyright 2015 The Chromium Authors. All rights reserved.
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# Use of this source code is governed by a BSD-style license that can be
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# found in the LICENSE file.
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set -e
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function follow_links() {
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cd -P "${1%/*}"
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file="$PWD/${1##*/}"
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while [ -h "$file" ]; do
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# On Mac OS, readlink -f doesn't work.
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cd -P "${file%/*}"
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file="$(readlink "$file")"
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cd -P "${file%/*}"
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file="$PWD/${file##*/}"
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done
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echo "$PWD/${file##*/}"
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}
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PROG_NAME="$(follow_links "$BASH_SOURCE")"
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BIN_DIR="$(cd "${PROG_NAME%/*}" ; pwd -P)"
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export FLUTTER_ROOT="$(cd "${BIN_DIR}/.." ; pwd -P)"
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FLUTTER_TOOLS_DIR="$FLUTTER_ROOT/packages/flutter_tools"
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SNAPSHOT_PATH="$FLUTTER_ROOT/bin/cache/flutter_tools.snapshot"
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STAMP_PATH="$FLUTTER_ROOT/bin/cache/flutter_tools.stamp"
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SCRIPT_PATH="$FLUTTER_TOOLS_DIR/bin/flutter_tools.dart"
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DART_SDK_PATH="$FLUTTER_ROOT/bin/cache/dart-sdk"
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DART="$DART_SDK_PATH/bin/dart"
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(
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if hash flock 2>/dev/null; then
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flock 3 # ensures that we don't simultaneously update Dart in multiple parallel instances
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# some platforms (e.g. Mac) don't have flock or any reliable alternative
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fi
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REVISION=`(cd "$FLUTTER_ROOT"; git rev-parse HEAD)`
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if [ ! -f "$SNAPSHOT_PATH" ] || [ ! -f "$STAMP_PATH" ] || [ `cat "$STAMP_PATH"` != "$REVISION" ] || [ "$FLUTTER_TOOLS_DIR/pubspec.yaml" -nt "$FLUTTER_TOOLS_DIR/pubspec.lock" ]; then
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mkdir -p "$FLUTTER_ROOT/bin/cache"
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touch "$FLUTTER_ROOT/bin/cache/.dartignore"
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"$FLUTTER_ROOT/bin/internal/update_dart_sdk.sh"
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echo Building flutter tool...
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FLUTTER_DIR="$FLUTTER_ROOT/packages/flutter"
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(cd "$FLUTTER_TOOLS_DIR"; rm -f pubspec.lock; "../../bin/cache/dart-sdk/bin/pub" get --verbosity=error --no-packages-dir)
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"$DART" --snapshot="$SNAPSHOT_PATH" --packages="$FLUTTER_TOOLS_DIR/.packages" "$SCRIPT_PATH"
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echo $REVISION > "$STAMP_PATH"
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fi
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) 3< "$PROG_NAME"
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set +e
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"$DART" "$SNAPSHOT_PATH" "$@"
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# The VM exits with code 253 if the snapshot version is out-of-date.
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# If it is, we need to snapshot it again.
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EXIT_CODE=$?
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if [ $EXIT_CODE != 253 ]; then
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exit $EXIT_CODE
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fi
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set -e
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"$DART" --snapshot="$SNAPSHOT_PATH" --packages="$FLUTTER_TOOLS_DIR/.packages" "$SCRIPT_PATH"
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"$DART" "$SNAPSHOT_PATH" "$@"
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