ale/custom-checks

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#!/bin/bash -eu
# This Bash script implements custom sanity checks for scripts beyond what
# Vint covers, which are easy to check with regex.
# A flag for automatically fixing some errors.
FIX_ERRORS=0
RETURN_CODE=0
function print_help() {
echo "Usage: ./custom-checks [--fix] [DIRECTORY]" 1>&2
echo 1>&2
echo " -h, --help Print this help text" 1>&2
echo " --fix Automatically fix some errors" 1>&2
exit 1
}
while [ $# -ne 0 ]; do
case $1 in
-h) ;& --help)
print_help
;;
--fix)
FIX_ERRORS=1
shift
;;
--)
shift
break
;;
-?*)
echo "Invalid argument: $1" 1>&2
exit 1
;;
*)
break
;;
esac
done
if [ $# -eq 0 ] || [ -z "$1" ]; then
print_help
fi
shopt -s globstar
directories=("$@")
check_errors() {
regex="$1"
message="$2"
for directory in "${directories[@]}"; do
while IFS= read -r match; do
RETURN_CODE=1
echo "$match $message"
done < <(grep -n "$regex" "$directory"/**/*.vim \
| grep -o '^[^:]\+:[0-9]\+' \
| sed 's:^\./::')
done
}
if (( FIX_ERRORS )); then
for directory in "${directories[@]}"; do
sed -i "s/^\(function.*)\) *$/\1 abort/" "$directory"/**/*.vim
done
fi
check_errors \
'^function.*) *$' \
'Function without abort keyword (See :help except-compat)'
check_errors ' \+$' 'Trailing whitespace'
check_errors '^ * end\?i\? *$' 'Write endif, not en, end, or endi'
check_errors '^ [^ ]' 'Use four spaces, not two spaces'
check_errors $'\t' 'Use four spaces, not tabs'
# This check should prevent people from using a particular inconsistent name.
check_errors 'let g:ale_\w\+_\w\+_args =' 'Name your option g:ale_<filetype>_<lintername>_options instead'
exit $RETURN_CODE