62c6859e59
Closes https://github.com/flutter/flutter/issues/160527. We don't use the Dart script anyway, and the shell script could be simplified to the single use in g3 (cl/688973229).
70 lines
2.4 KiB
Bash
Executable File
70 lines
2.4 KiB
Bash
Executable File
#!/usr/bin/env bash
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# Copyright 2014 The Flutter 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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# ---------------------------------- NOTE ---------------------------------- #
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#
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# This file will appear unused within the monorepo. It is used internally
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# (in google3) as part of the roll process, and care should be put before
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# making changes.
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#
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# See cl/688973229.
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#
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# -------------------------------------------------------------------------- #
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# Needed because if it is set, cd may print the path it changed to.
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unset CDPATH
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# On Mac OS, readlink -f doesn't work, so follow_links traverses the path one
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# link at a time, and then cds into the link destination and find out where it
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# ends up.
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#
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# The returned filesystem path must be a format usable by Dart's URI parser,
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# since the Dart command line tool treats its argument as a file URI, not a
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# filename. For instance, multiple consecutive slashes should be reduced to a
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# single slash, since double-slashes indicate a URI "authority", and these are
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# supposed to be filenames. There is an edge case where this will return
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# multiple slashes: when the input resolves to the root directory. However, if
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# that were the case, we wouldn't be running this shell, so we don't do anything
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# about it.
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#
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# The function is enclosed in a subshell to avoid changing the working directory
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# of the caller.
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function follow_links() (
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cd -P "$(dirname -- "$1")"
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file="$PWD/$(basename -- "$1")"
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while [[ -h "$file" ]]; do
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cd -P "$(dirname -- "$file")"
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file="$(readlink -- "$file")"
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cd -P "$(dirname -- "$file")"
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file="$PWD/$(basename -- "$file")"
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done
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echo "$file"
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)
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PROG_NAME="$(follow_links "${BASH_SOURCE[0]}")"
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BIN_DIR="$(cd "${PROG_NAME%/*}" ; pwd -P)"
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FLUTTER_ROOT="$(cd "${BIN_DIR}/../../.." ; pwd -P)"
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# Allow using a mock git for testing.
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if [ -z "$GIT" ]; then
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# By default, use git on PATH.
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GIT_BIN="git"
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else
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# Use the provide GIT executable.
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GIT_BIN="$GIT"
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fi
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# Test for fusion repository
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if [ -f "$FLUTTER_ROOT/DEPS" ]; then
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ENGINE_VERSION=$($GIT_BIN -C "$FLUTTER_ROOT" merge-base HEAD origin/master)
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elif [ -f "$FLUTTER_ROOT/bin/internal/engine.version" ]; then
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ENGINE_VERSION=$(cat "$FLUTTER_ROOT/bin/internal/engine.version")
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else
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>&2 echo "Not a valid FLUTTER_ROOT: $FLUTTER_ROOT"
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exit 1
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fi
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echo $ENGINE_VERSION
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