entrypoint.sh

#!/bin/sh

set -o errexit
set -o nounset

: "${INPUT_CONFIG:=${INPUT_CONFIG_FILE:-}}"
: "${INPUT_IGNORE:=${INPUT_IGNORE_FILES:-}}"

MARKDOWNLINT=markdownlint
MARKDOWNLINT="${MARKDOWNLINT}${INPUT_CONFIG:+ -c ${INPUT_CONFIG}}"
MARKDOWNLINT="${MARKDOWNLINT}${INPUT_DISABLE:+ --disable ${INPUT_DISABLE:?}}"
# shellcheck disable=SC2312
[ "$(echo "${INPUT_DOT:?}" | tr '[:upper:]' '[:lower:]')" = true ] && {
  MARKDOWNLINT="${MARKDOWNLINT} --dot"
}
MARKDOWNLINT="${MARKDOWNLINT}${INPUT_ENABLE:+ --enable ${INPUT_ENABLE:?}}"
MARKDOWNLINT="${MARKDOWNLINT}${INPUT_IGNORE:+ -i ${INPUT_IGNORE}}"
MARKDOWNLINT="${MARKDOWNLINT}${INPUT_IGNORE_PATH:+ -p ${INPUT_IGNORE_PATH}}"
MARKDOWNLINT="${MARKDOWNLINT}${INPUT_RULES:+ -r ${INPUT_RULES}}"

PROBLEM_MATCHER="$(mktemp -p "${GITHUB_WORKSPACE:?}")"
trap 'rm -f "${PROBLEM_MATCHER}"' EXIT
cp /markdownlint-problem-matcher.json "${PROBLEM_MATCHER}" || exit
echo "::add-matcher::${PROBLEM_MATCHER}"

# shellcheck disable=SC2086
${MARKDOWNLINT} ${INPUT_FILES:?} || readonly rc=$?

echo '::remove-matcher owner=markdownlint::'

# shellcheck disable=SC2248
exit ${rc:-}