| #!/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 |
| |
| # 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 -- "$file")" |
| done |
| echo "$file" |
| ) |
| |
| PROG_NAME="$(follow_links "$BASH_SOURCE")" |
| BIN_DIR="$(cd "${PROG_NAME%/*}" ; pwd -P)" |
| |
| # To define `shared::execute()` function |
| source "$BIN_DIR/internal/shared.sh" |
| |
| shared::execute "$@" |