swift-openapi-hummingbird/scripts/check-license-headers.sh

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#!/usr/bin/env bash
##===----------------------------------------------------------------------===##
##
## This source file is part of the SwiftOpenAPIGenerator open source project
##
## Copyright (c) 2023 Apple Inc. and the SwiftOpenAPIGenerator project authors
## Licensed under Apache License v2.0
##
## See LICENSE.txt for license information
## See CONTRIBUTORS.txt for the list of SwiftOpenAPIGenerator project authors
##
## SPDX-License-Identifier: Apache-2.0
##
##===----------------------------------------------------------------------===##
set -euo pipefail
log() { printf -- "** %s\n" "$*" >&2; }
error() { printf -- "** ERROR: %s\n" "$*" >&2; }
fatal() { error "$@"; exit 1; }
CURRENT_SCRIPT_DIR="$( cd "$( dirname "${BASH_SOURCE[0]}" )" && pwd )"
REPO_ROOT="$(git -C "${CURRENT_SCRIPT_DIR}" rev-parse --show-toplevel)"
EXPECTED_FILE_HEADER_TEMPLATE="@@===----------------------------------------------------------------------===@@
@@
@@ This source file is part of the SwiftOpenAPIGenerator open source project
@@
@@ Copyright (c) YEARS Apple Inc. and the SwiftOpenAPIGenerator project authors
@@ Licensed under Apache License v2.0
@@
@@ See LICENSE.txt for license information
@@ See CONTRIBUTORS.txt for the list of SwiftOpenAPIGenerator project authors
@@
@@ SPDX-License-Identifier: Apache-2.0
@@
@@===----------------------------------------------------------------------===@@"
PATHS_WITH_MISSING_LICENSE=( )
read -ra PATHS_TO_CHECK_FOR_LICENSE <<< "$( \
git -C "${REPO_ROOT}" ls-files -z \
":(exclude).gitignore" \
":(exclude).spi.yml" \
":(exclude).swift-format" \
":(exclude).github/*" \
":(exclude)CODE_OF_CONDUCT.md" \
":(exclude)CONTRIBUTING.md" \
":(exclude)CONTRIBUTORS.txt" \
":(exclude)LICENSE.txt" \
":(exclude)NOTICE.txt" \
":(exclude)Package.swift" \
":(exclude)Package.resolved" \
":(exclude)README.md" \
":(exclude)SECURITY.md" \
":(exclude)scripts/unacceptable-language.txt" \
":(exclude)Tests/PetstoreConsumerTests/Generated" \
":(exclude)Tests/OpenAPIGeneratorReferenceTests/Resources/ReferenceSources/*" \
":(exclude)docker/*" \
":(exclude)**/*.docc/*" \
":(exclude)**/.gitignore" \
":(exclude)**/Package.swift" \
":(exclude)**/Package.resolved" \
":(exclude)**/README.md" \
":(exclude)**/openapi.yaml" \
":(exclude)**/petstore.yaml" \
":(exclude)**/openapi-generator-config.yaml" \
| xargs -0 \
)"
for FILE_PATH in "${PATHS_TO_CHECK_FOR_LICENSE[@]}"; do
FILE_BASENAME=$(basename -- "${FILE_PATH}")
FILE_EXTENSION="${FILE_BASENAME##*.}"
case "${FILE_EXTENSION}" in
swift) EXPECTED_FILE_HEADER=$(sed -e 's|@@|//|g' <<<"${EXPECTED_FILE_HEADER_TEMPLATE}") ;;
yml) EXPECTED_FILE_HEADER=$(sed -e 's|@@|##|g' <<<"${EXPECTED_FILE_HEADER_TEMPLATE}") ;;
sh) EXPECTED_FILE_HEADER=$(cat <(echo '#!/usr/bin/env bash') <(sed -e 's|@@|##|g' <<<"${EXPECTED_FILE_HEADER_TEMPLATE}")) ;;
*) fatal "Unsupported file extension for file (exclude or update this script): ${FILE_PATH}" ;;
esac
EXPECTED_FILE_HEADER_LINECOUNT=$(wc -l <<<"${EXPECTED_FILE_HEADER}")
FILE_HEADER=$(head -n "${EXPECTED_FILE_HEADER_LINECOUNT}" "${FILE_PATH}")
NORMALIZED_FILE_HEADER=$(
echo "${FILE_HEADER}" \
| sed -e 's/202[3]-202[3]/YEARS/' -e 's/202[3]/YEARS/' \
)
if ! diff -u \
--label "Expected header" <(echo "${EXPECTED_FILE_HEADER}") \
--label "${FILE_PATH}" <(echo "${NORMALIZED_FILE_HEADER}")
then
PATHS_WITH_MISSING_LICENSE+=("${FILE_PATH} ")
fi
done
if [ "${#PATHS_WITH_MISSING_LICENSE[@]}" -gt 0 ]; then
fatal "❌ Found missing license header in files: ${PATHS_WITH_MISSING_LICENSE[*]}."
fi
log "✅ Found no files with missing license header."