#!/bin/sh

# Remove whitespace and certain characters from filenames in a directory

[ "$#" -gt 1 ] && {
	printf "Usage: rmw [dir]\n" >&2
	exit 1
}

dir=${1:-$(pwd)}

cd -- "$dir" || {
	printf "Couldn't cd to directory.\n" >&2
	exit 1
}

for file in .* *; do
	[ -e "$file" ] || continue

	newname=$(printf '%s\n' "$file" |
		sed -E \
			-e 's/["`”“-]*//g' \
			-e 's/[[:space:]]+/_/g')

	[ "$file" = "$newname" ] && continue

	if [ -e "$newname" ]; then
		printf "Skipping '%s' (target exists)\n" "$file" >&2
		continue
	fi

	mv -- "$file" "$newname"
done