From 159b6d3ea0878df425015b31561b80b32fb25575 Mon Sep 17 00:00:00 2001
From: Patrick Spek <p.spek@tyil.nl>
Date: Mon, 30 Mar 2020 19:04:50 +0200
Subject: Update chwp to allow ignoring monitors

This allows me to filter out monitors that duplicate another screen.
---
 .local/bin/chwp | 32 ++++++++++++++++++++++++--------
 1 file changed, 24 insertions(+), 8 deletions(-)

(limited to '.local')

diff --git a/.local/bin/chwp b/.local/bin/chwp
index aead087..c25078a 100755
--- a/.local/bin/chwp
+++ b/.local/bin/chwp
@@ -12,7 +12,6 @@ main()
 	size=${CHWP_SIZE:-1920x1080}
 	timeout=${1:-0}
 	walldir=$directory/$size
-	screencount=${CHWP_SCREENCOUNT:-$(xrandr -q | grep -F ' connected ' | wc -l)}
 
 	# Fail early if there's no wallpaper directory
 	if [ ! -d "$walldir" ]
@@ -21,7 +20,7 @@ main()
 		exit 1
 	fi
 
-	CACHEFILE=$(mktemp)
+	CACHEFILE="$(mktemp)"
 
 	find "${walldir}" -type f > "$CACHEFILE"
 
@@ -29,7 +28,7 @@ main()
 	if [ "$timeout" -eq 0 ]
 	then
 		set_papes
-		exit 0
+		exit
 	fi
 
 	# Otherwise, change it every so often
@@ -42,7 +41,7 @@ main()
 
 set_papes()
 {
-	pape=$(make_pape)
+	pape="$(make_pape)"
 
 	feh --bg-fill "$pape"
 	rm -f -- "$pape"
@@ -50,11 +49,24 @@ set_papes()
 
 make_pape()
 {
-	output=$(mktemp)
-	imagelist=$(mktemp)
+	output="$(mktemp)"
+	imagelist="$(mktemp)"
+	monitorlist="$(mktemp)"
 
-	for resolution in $(xrandr -q | grep -F ' connected ' | grep -Eo '\b[[:digit:]]+x[[:digit:]]+')
+	xrandr -q | grep -F ' connected ' > "$monitorlist"
+
+	while read -r monitor
 	do
+		if [ -f "$HOME/.local/etc/x/chwp-filter" ]
+		then
+			if printf "%s" "$monitor" | grep -qf "$HOME/.local/etc/x/chwp-filter"
+			then
+				printf "Filtering %s\n" "$monitor" >&2
+				continue
+			fi
+		fi
+
+		resolution="$(printf "%s" "$monitor" | grep -Eo '\b[[:digit:]]+x[[:digit:]]+')"
 		current_pape=$(get_pape "$resolution")
 
 		if [ "$current_pape" = "" ]
@@ -66,9 +78,13 @@ make_pape()
 		fi
 
 		printf '"%s"\n' "$current_pape" >> "$imagelist"
+
+		unset resolution
 		unset current_pape
-	done
+	done < "$monitorlist"
 
+	# shellcheck disable=SC2046
+	# shellcheck disable=SC2086
 	eval convert +append $(cat $imagelist) "$output"
 
 	printf "%s" "$output"
-- 
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