config

commit 9712969be799967ddd4b2cc9475158d1268bb757
parent 6309bafbf435f3e8f449df03ac84d35a1dfebf5d
Author: Jacob R. Edwards <jacobouno@protonmail.com>
Date:   Wed,  9 Sep 2020 20:26:20 -0700

Improve efficiency and structure

call programs once for each operation instead of once for each file.

Diffstat:
M
sxiv/.config/sxiv/exec/key-handler
 | 
44
+++++++++++++++++++++++++-------------------

1 file changed, 25 insertions(+), 19 deletions(-)
diff --git a/sxiv/.config/sxiv/exec/key-handler b/sxiv/.config/sxiv/exec/key-handler
@@ -1,32 +1,38 @@
 #!/usr/bin/env dash
 # sxiv key handler
 
-set -e
+set -eu
+IFS="
+"
+
+err() { echo "`basename $0`: $*" 1>&2 ;}
+out() { notify-send "$@"; echo "$@" ;}
+load() { stdin="$(cat -)" ;}
+last() { stdin="$(tail -n1 /dev/stdin)" ;}
+#next() { read stdin ;}
+
+# yes(1) hangs the program.
+mvnc() { while true; do echo n; done | mv -i $@ ;}
 
-# confirm via dmenu if it hasn't been already.
 confirm()
 {
-	if [ -z $answer ]; then
-		answer=$(printf "no\nyes" | dmenu) && [ "$answer" = "yes" ]
-	fi
+	[ "`echo "no\nyes" | dmenu`" = "yes" ] && return 0;
+	return 1;
 }
 
-# link image to wallpaper and invoke xwallpaper on it.
-set_wallpaper()
+setbg()
 {
 	ln -f "$1" "$XDG_CONFIG_HOME/wallpaper"
 	xwallpaper --zoom "$1"
 }
 
-while read file; do
-	case "$1"
-	in
-		"C-w") set_wallpaper "$file";;
-		"C-m") [ -z "$dest" ] && dest=`fsmenu -td`; mv "$file" "$dest";;
-		"C-c") [ -z "$dest" ] && dest=`fsmenu -td`; cp "$file" "$dest";;
-		"C-x") confirm && rm "$file" || exit 2;;
-		*) echo "error: sxiv.key-handler: key unbound '$1'" 1>&2; exit 2;;
-	esac
-	notify-send "$1 $file"
-	echo "$1 $file"
-done
+case $1
+in
+	C-w) last; setbg $stdin;;
+	C-m) d=`fsmenu -td` || exit 1; load; mvnc $stdin $d;;
+	C-x) confirm || exit 1; load; rm $stdin;;
+	*) err "'$1': Keybind does not exist."; exit 1;;
+esac
+
+stdin="$(echo "$stdin" | sed "s/^/$1: /")"
+out "$stdin"