Tristan Ross 3ca2049252 [ci] use env for format and support arm64 hosts (flutter/engine#56268)
Fixes running x64 binaries on arm64 hosts, this fixes systems like Raspberry Pi's, Apple Silicon, and Ampere.

Before, I would get something like:
```
Checking GN formatting...
Completed checking 0 GN files with no formatting problems.
Checking Java formatting...
No Java files with changes, skipping Java format check.
Checking Python formatting...
All python files formatted correctly.
Checking for trailing whitespace on 1 source file...
No trailing whitespace found.
No header files with changes, skipping header guard check.
Checking C++/ObjC/Shader formatting...
ERROR: Formatter command '/home/ross/flutter-engine/src/flutter/buildtools/linux-x64/clang/bin/clang-format --style=file shell/platform/linux/fl_application_test.cc' failed with exit code 255. Command output follows:

qemu-x86_64: Could not open '/lib64/ld-linux-x86-64.so.2': No such file or directory

Completed checking 0 C++/ObjC/Shader files with no formatting problems
```

Now it just works, I also changed the shell script to use env since `/bin/bash` doesn't exist on NixOS so using env is a more portable solution.

*List which issues are fixed by this PR. You must list at least one issue.*

*If you had to change anything in the [flutter/tests] repo, include a link to the migration guide as per the [breaking change policy].*

[C++, Objective-C, Java style guides]: https://github.com/flutter/engine/blob/main/CONTRIBUTING.md#style
2024-12-02 19:04:32 +00:00

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#!/usr/bin/env bash
#
# Copyright 2013 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.
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 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"
)
function dart_bin() {
dart_path="$1/flutter/third_party/dart/tools/sdks/dart-sdk/bin"
if [[ ! -e "$dart_path" ]]; then
dart_path="$1/third_party/dart/tools/sdks/dart-sdk/bin"
fi
echo "$dart_path"
}
SCRIPT_DIR=$(follow_links "$(dirname -- "${BASH_SOURCE[0]}")")
SRC_DIR="$(cd "$SCRIPT_DIR/../.."; pwd -P)"
DART_BIN=$(dart_bin "$SRC_DIR")
DART="${DART_BIN}/dart"
cd "$SCRIPT_DIR"
"$DART" \
bin/format.dart \
"$@"