From 00325aa3c048c8432a04e2ab85417c4ede8503cf Mon Sep 17 00:00:00 2001
From: rokosun <rokosun@noreply.git.trom.tf>
Date: Thu, 22 Sep 2022 16:51:45 +0200
Subject: [PATCH] better handling of qt configuration files

---
 bin/periodic/fix-theming | 92 +++++++++++++++++++++++++---------------
 1 file changed, 57 insertions(+), 35 deletions(-)

diff --git a/bin/periodic/fix-theming b/bin/periodic/fix-theming
index 5d413cd..1b84018 100755
--- a/bin/periodic/fix-theming
+++ b/bin/periodic/fix-theming
@@ -1,40 +1,62 @@
 #!/bin/bash
+sync_theme() {
+	# Get the current system theme
+	theme=$(xfconf-query -c xsettings -p /Net/ThemeName)
+	# Find the best match for the xfwm4 theme that corresponds with the current system theme
+	xfwm4_theme=$(find /usr/share/themes/ /usr/local/share/themes/ "$HOME"/.themes/ "$HOME"/.local/share/themes/ -mindepth 2 -maxdepth 2 -type d -name xfwm4 -printf '%h\n' 2>/dev/null | grep -o "/${theme}[^/]*$" | sort | head -n1)
+	# If a match is not found then use the Default theme
+	[ -z "$xfwm4_theme" ] && xfwm4_theme='Default'
+	# Apply the xfwm4 theme
+	xfconf-query -c xfwm4 -p /general/theme -n -t string -s "${xfwm4_theme#/}"
+	# Apply the current theme with gsettings
+	gsettings set org.gnome.desktop.interface gtk-theme "$theme"
+}
+
+setvalue() {
+	grep -qz "^\[Appearance\][^\[]*$1=$2" "$file" && return
+	if grep -qz "^\[Appearance\][^\[]*$1=" "$file"; then
+		sed -i "/\[Appearance\]/,/^\s*$1=/{s/^\s*$1=.*$/$1=$2/}" "$file"
+	else
+		sed -i "/\[Appearance\]/a $1=$2" "$file"
+	fi
+}
+
+sync_icon_theme() {
+	# Get the current icon theme
+	icon_theme=$(xfconf-query -c xsettings -p /Net/IconThemeName)
+	# Apply the same theme in qt5ct and qt6ct configuration
+	for file in "$HOME"/.config/qt5ct/qt5ct.conf "$HOME"/.config/qt6ct/qt6ct.conf; do
+		# Create the config directory
+		dir=$(dirname "$file")
+		mkdir -p "$dir" || { echo "failed to make directory $dir"; continue; }
+		# Create the config file appropriately
+		if grep -q '^\[Appearance\]' "$file"; then
+			setvalue 'icon_theme' "$icon_theme"
+			setvalue 'style' 'gtk2'
+		elif grep -q '\S' "$file"; then
+			tail -n1 "$file" | grep -qx '\s*' && begin='' || begin='\n'
+			printf '%b[Appearance]\nicon_theme=%s\nstyle=gtk2\n' "$begin" "$icon_theme" >> "$file"
+		else
+			printf '[Appearance]\nicon_theme=%s\nstyle=gtk2\n' "$icon_theme" > "$file"
+		fi
+	done
+}
+
+sync_font() {
+	# Get the current system font
+	font=$(xfconf-query -c xsettings -p /Gtk/FontName)
+	# Apply the same font for the title of xfce windows
+	xfconf-query -c xfwm4 -p /general/title_font -n -t string -s "$font"
+}
+
+sync_theme
+sync_icon_theme
+sync_font
+
 while read -r line; do
-
 	case "$line" in
-		# When the system theme has been changed
-		'set: /Net/ThemeName')
-			# Get the current system theme
-			theme=$(xfconf-query -c xsettings -p /Net/ThemeName)
-			# Find the best match for the xfwm4 theme that corresponds with the current system theme
-			xfwm4_theme=$(find /usr/share/themes/ /usr/local/share/themes/ "$HOME"/.themes/ "$HOME"/.local/share/themes/ -mindepth 2 -maxdepth 2 -type d -name xfwm4 -printf '%h\n' 2>/dev/null | grep -o "/${theme}[^/]*$" | sort | head -n1)
-			# If a match is not found then use the Default theme
-			[ -z "$xfwm4_theme" ] && xfwm4_theme='Default'
-			# Apply the xfwm4 theme
-			xfconf-query -c xfwm4 -p /general/theme -n -t string -s "${xfwm4_theme#/}"
-			# Apply the current theme with gsettings
-			gsettings set org.gnome.desktop.interface gtk-theme "$theme"
-			;;
-		# When the icon theme has been changed
-		'set: /Net/IconThemeName')
-			# Get the current icon theme
-			icon_theme=$(xfconf-query -c xsettings -p /Net/IconThemeName)
-			# Apply the same theme in qt5ct and qt6ct configuration
-			for file in "$HOME"/.config/qt5ct/qt5ct.conf "$HOME"/.config/qt6ct/qt6ct.conf; do
-				if [ -f "$file" ]; then
-					sed -i "s/^icon_theme=.*$/icon_theme=$icon_theme/" "$file"
-				else
-					printf '[Appearance]\nicon_theme=%s\nstyle=gtk2\n' "$icon_theme" > "$file"
-				fi
-			done
-			;;
-		# When the system font has been changed
-		'set: /Gtk/FontName')
-			# Get the current system font
-			font=$(xfconf-query -c xsettings -p /Gtk/FontName)
-			# Apply the same font for the title of xfce windows
-			xfconf-query -c xfwm4 -p /general/title_font -n -t string -s "$font"
-			;;
+		'set: /Net/ThemeName') sync_theme ;;
+		'set: /Net/IconThemeName') sync_icon_theme ;;
+		'set: /Gtk/FontName') sync_font ;;
 	esac
-
 done < <(xfconf-query -c xsettings -m)