#!/bin/sh

usage () {
	cat <<EOF>&2
Usage: ${0##*/} FILES.tex|FILES.texi

Clean TeX/LaTeX/Texinfo projects of temp files.

Argument must have a '.tex' or '.texi' extension so that we do not acccidentally
remove files matching these extensions if they are not related to a TeX file.

EOF
}

[ $# -eq 0 ] && usage && exit 1
[ "$1" = "-h" ] && usage && exit
[ "$1" = "--" ] && shift

for i ; do
	case "$i" in
	*/*) ;;
	*)
		i="./$i" ;;
	esac
	dirname="${i%/*}"
	basename="${i##*/}"
	ext=$(echo "${basename##*.}" | awk '{print tolower($0)}')
	basename="${basename%.*}"
	[ "$ext" != "tex" ] && [ "$ext" != "texi" ] && continue
	## Reset arg list (big performance boost).
	set --
	for j in aux bbl blg cp cps fn glg glo gls idx ilg ind ky lof log maf mt mtc nav out pg snm synctex.gz synctex tns toc tp vr vrs xdy
	do
		set -- "$@" "$dirname/$basename.$j"
	done
	## Do the file check last to minimize race conditions.
	[ -f "$i" ] || continue
	rm -v "$@" 2>/dev/null
done