golang-ci linter for files getting pushed to remote only

pre-push

#!/bin/sh

# An example hook script to verify what is about to be pushed.  Called by "git
# push" after it has checked the remote status, but before anything has been
# pushed.  If this script exits with a non-zero status nothing will be pushed.
#
# This hook is called with the following parameters:
#
# $1 -- Name of the remote to which the push is being done
# $2 -- URL to which the push is being done
#
# If pushing without using a named remote those arguments will be equal.
#
# Information about the commits which are being pushed is supplied as lines to
# the standard input in the form:
#
#   <local ref> <local oid> <remote ref> <remote oid>
#

remote="$1"
url="$2"

zero=$(git hash-object --stdin </dev/null | tr '[0-9a-f]' '0')

while read local_ref local_oid remote_ref remote_oid
do
	if test "$local_oid" = "$zero"
	then
		# Handle delete
		:
	else
		if test "$remote_oid" = "$zero"
		then
			# New branch, examine all commits
			range="$local_oid"
		else
			# Update to existing branch, examine new commits
			range="$remote_oid..$local_oid"
		fi
		
		# Gather all files getting pushed to remote. Bail if nothing is found
		files=($(git diff --name-status --diff-filter=ACM $remote_oid | awk '{print $2}'))
		if [ -z "$files" ]
		then
		    exit 0
		fi
		# Create a grep pattern consisting of all the files we have changed
		grepFiles=$(printf "\|%s" "${files[@]}")
		grepFiles=${grepFiles:2}
		# Run golangci-lint run for the entire project but only output the reports that are relevant to our changes
		errs=$(golangci-lint run ./... --out-format tab | grep $grepFiles)
		printf '%s\n' "${errs[@]}"
		# No errors? We are good to go!
		if [ -z "$errs" ]
		then
		    exit 0
		else
		    exit 1
		fi
	fi
done
exit 0