ReC98/hooks/pre-commit

#!/bin/sh

if git rev-parse --verify HEAD >/dev/null 2>&1
then
	against=HEAD
else
	# Initial commit: diff against an empty tree object
	against=4b825dc642cb6eb9a060e54bf8d69288fbee4904
fi

# Remove trailing commas from `public` directives, as well as `public`
# directives without arguments. These crash on TASM32 version 5.0, but work on
# later versions.
for f in `git diff-index --name-only --cached --diff-filter=ACMRX ${against} | grep \.asm$ -i`; do
	if [ -n "$(sed -b -i -E 's/(public\s+[^;]+?),\s*(;.*)?$/\1\2/w /dev/stdout' "$f")" ]; then
		echo "$f"': removed a trailing comma from a `public` line, please re-stage.'
		exit 1
	fi
	if grep -q -E "^public$" "$f"; then
		sed -b -i -E '/^public\r?$/d' "$f"
		echo "$f"': removed a symbol-less `public`, please re-stage.'
		exit 1
	fi
done