bin/latexmk: allow setting a different ENGINE and VIEWER

also make sure we are *nix cross-compatible and fix some shellcheck
warnings

1 files changed, 29 insertions, 18 deletions

diff --git a/bin/latexmk b/bin/latexmk
index 61b68f5..79d497e 100755
--- a/bin/latexmk
+++ b/bin/latexmk
@@ -3,38 +3,49 @@
 set -e
 [ -n "$DEBUG" ] && set -x
 
+ENGINE=${ENGINE:-tectonic}
+ENGINE_ARGS=${ENGINE_ARGS:-}
+VIEWER=${VIEWER:-zathura}
+
 reexec=
+nocolor=
 while getopts 1Rnh opt; do
 	case "$opt" in
-	1)	entr_args='-z' ;;
-	R)	reexec=1 ;;
-	n)	nocolor=1 ;;
-	h|?)	printf "usage: %s [-h]\n" "$(basename "$0")"
-		printf "\n"
-		printf "  -1 \t oneshot mode\n"
-		printf "  -n \t no color\n"
-		printf "\n"
-		exit 2 ;;
+		1) entr_args='-z' ;;
+		R) reexec=1 ;;
+		n) nocolor=1 ;;
+		h | ?)
+			printf "usage: %s [-h]\n" "$(basename "$0")"
+			printf "\n"
+			printf "  -1 \t only run once\n"
+			printf "  -n \t no color\n"
+			printf "\n"
+			exit 2
+			;;
 	esac
 done
 shift $((OPTIND - 1))
 
 if [ -n "${reexec}" ]; then
-	pdf=$(readlink -f -- $(printf $1 | sed 's/\.tex/\.pdf/'));
+	pdf=$(realpath "$(printf "%s" "$1" | sed 's/\.tex/\.pdf/')")
 	log() {
 		if [ -n "${nocolor}" ]; then
-			printf "$(tput setaf 2)!>>>$(tput sgr0) $1\n"
+			printf "%s!==>%s %s\n" "$(tput setaf 2)" "$(tput sgr0)" "$1"
 		else
-			printf "=> $1\n"
+			printf "==> %s\n" "$1"
 		fi
 	}
-	log "running tectonic"
-	tectonic --chatter=minimal "$1"
-	if ! pgrep -fx "zathura $pdf" >/dev/null; then
-			log "running zathura"
-			swaymsg exec zathura "$pdf" >/dev/null
+
+	# compile the document
+	log "running ${ENGINE}"
+	${ENGINE} ${ENGINE_ARGS} "$1"
+
+	if ! pgrep -fx "${VIEWER} $pdf" >/dev/null; then
+		# spawn the viewer
+		log "running ${VIEWER}"
+		(${VIEWER} "$pdf" >/dev/null 2>&1) &
 	fi
-	printf -- '!! '
+
 	exit 0
 fi