blob: 9347b8dad6949daf3d18e4f4f30a1cd41bb59d16 [file] [log] [blame]
#!/usr/bin/env bash
# Copyright 2014 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.
# ---------------------------------- 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
# To debug the tool, you can uncomment the following lines to enable debug
# mode and set an observatory port:
# Needed because if it is set, cd may print the path it changed to.
unset CDPATH
# On Mac OS, readlink -f doesn't work, so follow_links traverses the path one
# link at a time, and then cds into the link destination and find out where it
# ends up.
# The returned filesystem path must be a format usable by Dart's URI parser,
# since the Dart command line tool treats its argument as a file URI, not a
# filename. For instance, multiple consecutive slashes should be reduced to a
# single slash, since double-slashes indicate a URI "authority", and these are
# supposed to be filenames. There is an edge case where this will return
# multiple slashes: when the input resolves to the root directory. However, if
# that were the case, we wouldn't be running this shell, so we don't do anything
# about it.
# The function is enclosed in a subshell to avoid changing the working directory
# of the caller.
function follow_links() (
cd -P "$(dirname -- "$1")"
file="$PWD/$(basename -- "$1")"
while [[ -h "$file" ]]; do
cd -P "$(dirname -- "$file")"
file="$(readlink -- "$file")"
cd -P "$(dirname -- "$file")"
file="$PWD/$(basename -- "$file")"
echo "$file"
PROG_NAME="$(follow_links "${BASH_SOURCE[0]}")"
BIN_DIR="$(cd "${PROG_NAME%/*}" ; pwd -P)"
OS="$(uname -s)"
# If we're on Windows, invoke the batch script instead to get proper locking.
if [[ $OS =~ MINGW.* || $OS =~ CYGWIN.* || $OS =~ MSYS.* ]]; then
exec "${BIN_DIR}/flutter.bat" "$@"
# To define `shared::execute()` function
source "$BIN_DIR/internal/"
shared::execute "$@"