1 files changed, 313 insertions, 0 deletions
diff --git a/bin/menuscripts/commander b/bin/menuscripts/commander
new file mode 100755
index 0000000..028e8a7
--- /dev/null
+++ b/bin/menuscripts/commander
@@ -0,0 +1,313 @@
+#!/bin/sh
+
+# An attempt to unify usage of multiple launchers.
+# MENUCMD must be set to the name of the lancher
+#
+# look at the last line to understand how it works
+
+tmp="$(mktemp -u)"
+export menuopts=""
+TOFIRC="$HOME/.config/tofi/config"
+
+options='
+horizontal
+center
+input
+instant
+dynamic
+long
+prompt
+numbered
+prefix'
+
+cleanup() { rm -f "$tmp"; }
+logn() { >&2 printf '%s\n' "$@"; }
+
+run() {
+	IFS=:
+	set -f
+	find -L $PATH -type f -printf "%f\n" 2> /dev/null | sort -u
+}
+
+help() {
+	cat <<-EOF
+	Usage: commander OPTIONS...
+
+	An attempt to regroup multiple launchers into one,
+	it detects the value of the MENUCMD variable
+
+	try:
+	MENUCMD=tofi commander < /etc/passwd
+
+	Options:
+	  -h              Display items horizontally
+	  -c              Display centered
+	  -i              Take an input and return it to stdout
+	  -d              Adjust size and style dynamically
+	  -p ARG          Prompt user with the specified argument
+	  -l              Display in long list format
+	  -n              Output the number of matches
+	  -r              Select an executable from PATH
+	  -s              Invert instant select on single match
+	  -x              Invert prefix matching
+	EOF
+}
+
+add_option() { menuopts="$menuopts $*"; }
+get_prop() { awk -F '=' "/$1 *=*/ {print \$2}" "$TOFIRC"; }
+
+
+trap cleanup EXIT
+
+# Helper functions
+case "$MENUCMD" in
+	"tofi")
+		# $1: items count
+		get_height()
+		{
+			font_size="$(get_prop "font-size")"
+			padding_top="$(get_prop "padding-top")"
+			padding_bottom="$(get_prop "padding-bottom")"
+
+			printf "%s" "$((
+			font_size*2 + padding_top + padding_bottom + 2 +
+			($1)*(font_size*2 - 2)
+			))"
+
+		}
+		# $1: items length
+		get_width()
+		{
+			font_size="$(get_prop "font-size")"
+			padding_left="$(get_prop "padding-left")"
+			padding_right="$(get_prop "padding-right")"
+			printf "%s" "$(($1*(font_size-2) + 2 + padding_left + padding_right))"
+		} ;;
+	"dmenu") ;;
+	*) ;;
+esac
+
+
+main()
+{
+	# shellcheck disable=SC2317
+	case "$MENUCMD" in
+		"tofi")
+			center() { add_option "--anchor=center --width=20%"; }
+
+			horizontal() {
+				add_option "--horizontal=true --height=32"
+				add_option "--result-spacing=12"
+				add_option "--selection-background=#88c0d0"
+				add_option "--selection-background-padding=6,4"
+				add_option "--padding-top=0 --padding-bottom=0"
+				add_option "--margin-top=4"
+			}
+
+			dynamic() {
+				pre_cmd()
+				{
+					max_height="$(get_height 8)"
+					max_width="$(get_width 48)"
+
+					tee "$tmp"
+
+					items_count="$(wc -l < "$tmp")"
+					items_length="$(wc -L < "$tmp")"
+
+					if [ "$long" -ne 1 ] 
+					then
+						height="$(get_height "$items_count")"
+						[ "$height" -gt "$max_height" ] && height="$max_height"
+						add_option "--height=$height"
+					fi
+
+					width="$(get_width "$items_length")"
+					[ "$width" -gt "$max_width" ] && width="$max_width"
+
+					
+					if [ "$prompt" -eq 1 ]
+					then
+						prompt_width="$(printf "%s" "$prompt_arg" | wc -c)"
+						width="$((width + $(get_width "$prompt_width")))"
+					fi
+
+					add_option "--width=$width"
+				}
+			}
+
+			long() { add_option "--width=100% --height=$(get_height 20)"; }
+
+			input() {
+				add_option "--height=$(get_height 0) --width=$(get_width 24)"
+				pre_filter() { cat /dev/null; }
+			}
+
+			prefix() { add_option '--matching-algorithm=normal'; }
+
+			instant() { add_option "--auto-accept-single=false"; }
+
+			prompt() { add_option '--prompt-text' "$prompt_arg"; }
+
+			numbered() { 
+				pre_filter() { awk '{print NR, $0}'; }
+				post_filter() { awk '{print $1}'; }
+			}
+
+			menucmd() { tofi "$@"; }
+			;;
+
+		"dmenu")
+			horizontal() { add_option "-l 0"; }
+
+			center() { add_option "-c"; }
+
+			long() { add_option "-l 20 -g 1"; }
+
+			input() {
+				pre_filter() { cat /dev/null; }
+			}
+
+			dynamic() { 
+				pre_cmd()
+				{
+					tee "$tmp"
+					items_count="$(wc -l < "$tmp")"
+					number="$items_count"
+
+					for i in $(seq $((number/2)))
+					do [ "$((number%i))" -eq 0 ] && factors="$i $factors"
+					done
+
+					min_diff=9999999999
+					for factor in $factors
+					do
+						quotient="$((number/factor))"
+						diff=$((quotient - factor))
+						if [ "$diff" -ge 0 ] && [ "$diff" -lt "$min_diff" ]
+						then
+							columns="$factor"
+							rows="$quotient"
+							min_diff="$diff"
+						fi
+					done
+
+					add_option "-g $columns"
+					add_option "-l $rows"
+				}
+			}
+
+			instant() { add_option "-n"; }
+
+			prefix() { add_option '-x'; }
+
+			prompt() { add_option '-p' "$prompt_arg"; }
+
+			numbered() { add_option "-px"; }
+
+			menucmd() { dmenu "$@"; }
+			;;
+
+		*)
+			center() { :; }
+
+			horizontal() { :; }
+
+			dynamic() { :; }
+			
+			long() { :; }
+
+			input() {
+				pre_filter() { cat /dev/null; }
+				add_option '--print-query'
+			}
+
+			prefix() { :; }
+
+			prompt() { add_option "--prompt" "$prompt_arg"; }
+
+			numbered() { 
+				pre_filter() { awk '{print NR, $0}'; }
+				add_option '--with-nth' '2..'
+				post_filter() { awk '{print $1}'; }
+			}
+
+			menucmd() { fzf "$@"; }
+			;;
+	esac
+
+	for option in $options
+	do eval "$option=0"
+	done
+
+	while getopts ":cdhilop:nrsx" opt
+	do
+		# shellcheck disable=SC2034
+		case $opt in
+			
+			# display horizontal
+			h) horizontal=1 ;;
+			# display centered
+			c) center=1 ;;
+			# take an input and return it on stdout
+			i) input=1 ;;
+			# adjust size and style dynamically
+			d) dynamic=1 ;;
+			p) prompt=1; prompt_arg="$OPTARG";;
+			# long list format
+			l) long=1 ;;
+			# output number of match
+			n) numbered=1 ;;
+			# select an executable from PATH
+			r) shift
+				run | $0 "$@"
+				exit ;;
+			# invert instant select on single match
+			s) instant=1 ;;
+			# invert prefix matching
+			x) prefix=1 ;;
+
+			:)
+				logn "Option '-$OPTARG' requires an argument"
+				help
+				exit 1 ;;
+			?)
+				logn "Invalid option: -$OPTARG"
+				help
+				exit 1 ;;
+		esac
+	done
+
+
+	# conflicts
+	[ "$input" -eq 1 ] && [ "$dynamic" -eq 1 ] && logn "conflicting options." && help && exit 1
+
+	# quit if stdin is empty
+	[ -t 0 ] && [ "$input" -eq 0 ] && logn "Stdin is empty." && help && exit 1
+
+	# call options
+	for option in $options
+	do eval "test \"\$$option\" -eq 1" && $option
+	done
+
+	command -v pre_filter > /dev/null || pre_filter() { cat; }
+	command -v post_filter > /dev/null || post_filter() { cat; }
+
+	which "${MENUCMD:-fzf}" > /dev/null || exit 1
+
+	
+
+	if command -v pre_cmd > /dev/null
+	then
+		pre_cmd > "$tmp"
+		>&2 printf "menuopts: %s\n" "$menuopts"
+		# shellcheck disable=SC2086
+		pre_filter < "$tmp" | menucmd $menuopts | post_filter
+	else
+		>&2 printf "menuopts: %s\n" "$menuopts"
+		# shellcheck disable=SC2086
+		pre_filter | menucmd $menuopts | post_filter
+	fi
+}
+
+main "$@"