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ds2api/scripts/lint.sh

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#!/usr/bin/env bash
set -euo pipefail
ROOT_DIR="$(cd "$(dirname "$0")/.." && pwd)"
cd "$ROOT_DIR"
LINT_BIN="${GOLANGCI_LINT_BIN:-golangci-lint}"
BOOTSTRAP_VERSION="${GOLANGCI_LINT_VERSION:-v2.11.4}"
BOOTSTRAP_BIN="${ROOT_DIR}/.tmp/golangci-lint-${BOOTSTRAP_VERSION}"
bootstrap_golangci_lint() {
local version_no_v os arch artifact archive_url tmp_dir
version_no_v="${BOOTSTRAP_VERSION#v}"
os="$(uname -s | tr '[:upper:]' '[:lower:]')"
arch="$(uname -m | tr '[:upper:]' '[:lower:]')"
case "$os" in
linux|darwin|windows) ;;
*)
echo "unsupported OS for bootstrap: ${os}" >&2
return 1
;;
esac
case "$arch" in
x86_64|amd64) arch="amd64" ;;
aarch64|arm64) arch="arm64" ;;
*)
echo "unsupported architecture for bootstrap: ${arch}" >&2
return 1
;;
esac
artifact="${os}-${arch}"
archive_url="https://github.com/golangci/golangci-lint/releases/download/${BOOTSTRAP_VERSION}/golangci-lint-${version_no_v}-${artifact}.tar.gz"
mkdir -p "${ROOT_DIR}/.tmp"
tmp_dir="$(mktemp -d)"
trap 'rm -rf "${tmp_dir}"' RETURN
curl -sSfL "${archive_url}" -o "${tmp_dir}/golangci-lint.tar.gz"
tar -xzf "${tmp_dir}/golangci-lint.tar.gz" -C "${tmp_dir}"
cp "${tmp_dir}/golangci-lint-${version_no_v}-${artifact}/golangci-lint" "${BOOTSTRAP_BIN}"
chmod +x "${BOOTSTRAP_BIN}"
echo "bootstrapped golangci-lint ${BOOTSTRAP_VERSION} to ${BOOTSTRAP_BIN}" >&2
}
run_lint() {
local bin="$1"
if [[ "$bin" == *" "* ]]; then
eval "$bin fmt --diff -c .golangci.yml" && eval "$bin run -c .golangci.yml"
else
"$bin" fmt --diff -c .golangci.yml && "$bin" run -c .golangci.yml
fi
}
is_compatibility_error() {
case "$1" in
*"unknown command \"fmt\""*|\
*"unknown command \"run\""*|\
*"unknown flag"*|\
*"no such flag"*|\
*"unsupported version of the configuration"*|\
*"can't load config"*)
return 0
;;
*)
return 1
;;
esac
}
# v2 separates formatters from linters; enforce both in one entrypoint.
if lint_output="$(run_lint "$LINT_BIN" 2>&1)"; then
[[ -n "$lint_output" ]] && echo "$lint_output"
exit 0
fi
if [[ -n "${GOLANGCI_LINT_BIN:-}" ]]; then
echo "$lint_output" >&2
echo "lint failed with explicit GOLANGCI_LINT_BIN=${GOLANGCI_LINT_BIN}; skip auto-bootstrap." >&2
exit 1
fi
if ! is_compatibility_error "$lint_output"; then
echo "$lint_output" >&2
exit 1
fi
echo "default golangci-lint appears incompatible; bootstrapping ${BOOTSTRAP_VERSION}..." >&2
if [[ ! -x "${BOOTSTRAP_BIN}" ]]; then
bootstrap_golangci_lint
fi
if lint_output="$(run_lint "${BOOTSTRAP_BIN}" 2>&1)"; then
[[ -n "$lint_output" ]] && echo "$lint_output"
exit 0
fi
echo "$lint_output" >&2
exit 1