mas/script/lint

#!/bin/bash -u
#
# script/lint
# mas
#
# Linting checks for development and CI.
#
# Reports style violations without making any modifications to the code.
#
# Please keep in sync with script/format.
#

set -o pipefail

mas_dir="$(readlink -fn "$(dirname "${BASH_SOURCE:-"${0}"}")/..")"

if ! cd -- "${mas_dir}"; then
  printf $'Error: Could not cd into mas directory: %s\n' "${mas_dir}" >&2
  exit 1
fi

printf $'==> 🚨 Linting mas (%s)\n' "$(script/version --write)"

for linter in git markdownlint periphery shellcheck shfmt swift-format swiftformat swiftlint yamllint; do
  if [[ ! -x "$(command -v ${linter})" ]]; then
    printf $'error: %s is not installed. Run \'script/bootstrap\' or \'brew install %s\'.\n' "${linter}" "${linter}"
    exit 1
  fi
done

exit_code=0
for source in Package.swift Sources Tests; do
  printf -- $'--> 🦅 %s swift-format\n' "${source}"
  swift-format lint --strict --recursive "${source}"
  ((exit_code |= "${?}"))
  printf -- $'--> 🦅 %s swiftformat\n' "${source}"
  script -q /dev/null swiftformat --lint --strict "${source}" |
    (grep -vxE '(?:\^D\x08{2})?Running SwiftFormat\.{3}\r|\(lint mode - no files will be changed\.\)\r|Reading (?:config|swift-version) file at .*|\x1b\[32mSwiftFormat completed in \d+\.\d+s\.\x1b\[0m\r|0/\d+ files require formatting\.\r' || true)
  ((exit_code |= "${?}"))
  printf -- $'--> 🦅 %s swiftlint\n' "${source}"
  swiftlint --strict --quiet "${source}" 2> \
    >((grep -vxF $'warning: Configuration option \'allow_multiline_func\' in \'opening_brace\' rule is deprecated. Use the option \'ignore_multiline_function_signatures\' instead.' || true) >&2)
  ((exit_code |= "${?}"))
done

printf -- $'--> 🐚 Bash shellcheck\n'
shellcheck --shell=bash script/*
((exit_code |= "${?}"))

printf -- $'--> 📜 Bash shfmt\n'
shfmt \
  --diff \
  --list \
  --indent 2 \
  --case-indent \
  contrib/ script/
((exit_code |= "${?}"))

printf -- $'--> 〽️ Markdown\n'
markdownlint --config .markdownlint.json .github .
((exit_code |= "${?}"))

printf -- $'--> 🌳 Git\n'
PAGER='cat' git diff --check
((exit_code |= "${?}"))

printf -- $'--> 🖊 YAML\n'
yamllint .
((exit_code |= "${?}"))

printf -- $'--> 🌀 Periphery\n'
script -q /dev/null periphery scan --strict --quiet --disable-update-check |
  (grep -vxE '(?:\x1b\[0;1;32m|\^D\x08{2})\* (?:\x1b\[0;0m\x1b\[0;1m)?No unused code detected\.(?:\x1b\[0;0m)?\r' || true)
((exit_code |= "${?}"))

exit "${exit_code}"