adapt layout scripts

data/layout-scripts/eleven.sh

@@ -1,8 +1,6 @@
 #! /bin/bash
 
-# Reset everything
+# Reset everything Reset everything
-
-# Reset everything
 
 #
 dconf reset -f /org/gnome/shell/extensions/arcmenu/ || echo
@@ -10,7 +8,7 @@ dconf reset -f /org/gnome/shell/extensions/dash-to-dock/ || echo
 dconf reset -f /org/gnome/shell/extensions/dash-to-panel/ || echo
 dconf reset -f /org/gnome/shell/extensions/just-perfection/ || echo
 gnome-extensions reset arcmenu@arcmenu.com || echo
-gnome-extensions reset pika-dock@pika.com || echo
+gnome-extensions reset dash-to-dock@micxgx.gmail.com || echo
 gnome-extensions reset dash-to-panel@jderose9.github.com || echo
 gnome-extensions reset just-perfection-desktop@just-perfection || echo
 gnome-extensions reset launch-new-instance@gnome-shell-extensions.gcampax.github.com || echo

data/layout-scripts/gnome.sh

@@ -0,0 +1,5 @@
+#! /bin/bash
+for ext in $(gnome-extensions list); do
+    gnome-extensions disable $ext;
+done
+/usr/lib/pika/gnome-layouts/enable-pika-default-gex.sh

data/layout-scripts/gnome2.sh

@@ -1,14 +1,12 @@
 #! /bin/bash
 
 # Reset everything
-
-#
 dconf reset -f /org/gnome/shell/extensions/arcmenu/ || echo
 dconf reset -f /org/gnome/shell/extensions/dash-to-dock/ || echo
 dconf reset -f /org/gnome/shell/extensions/dash-to-panel/ || echo
 dconf reset -f /org/gnome/shell/extensions/just-perfection/ || echo
 gnome-extensions reset arcmenu@arcmenu.com || echo
-gnome-extensions reset pika-dock@pika.com || echo
+gnome-extensions reset dash-to-dock@micxgx.gmail.com || echo
 gnome-extensions reset dash-to-panel@jderose9.github.com || echo
 gnome-extensions reset just-perfection-desktop@just-perfection || echo
 gnome-extensions reset launch-new-instance@gnome-shell-extensions.gcampax.github.com || echo

data/layout-scripts/pineapple.sh

@@ -1,14 +1,12 @@
 #! /bin/bash
 
 # Reset everything
-
-#
 dconf reset -f /org/gnome/shell/extensions/arcmenu/ || echo
 dconf reset -f /org/gnome/shell/extensions/dash-to-dock/ || echo
 dconf reset -f /org/gnome/shell/extensions/dash-to-panel/ || echo
 dconf reset -f /org/gnome/shell/extensions/just-perfection/ || echo
 gnome-extensions reset arcmenu@arcmenu.com || echo
-gnome-extensions reset pika-dock@pika.com || echo
+gnome-extensions reset dash-to-dock@micxgx.gmail.com || echo
 gnome-extensions reset dash-to-panel@jderose9.github.com || echo
 gnome-extensions reset just-perfection-desktop@just-perfection || echo
 gnome-extensions reset launch-new-instance@gnome-shell-extensions.gcampax.github.com || echo
@@ -32,7 +30,7 @@ dconf write /org/gnome/shell/extensions/dash-to-dock/dock-position "'BOTTOM'"
 dconf write /org/gnome/shell/extensions/just-perfection/clock-menu-position 1
 
 # Enable Dock
-gnome-extensions enable pika-dock@pika.com
+gnome-extensions enable dash-to-dock@micxgx.gmail.com
 # Enable just perfection
 gnome-extensions enable just-perfection-desktop@just-perfection
 # Enable Desktop Icons

data/layout-scripts/reset.sh

@@ -1,7 +0,0 @@
-#! /bin/bash
-for ext in $(gnome-extensions list); do
-    gnome-extensions reset $ext;
-    gnome-extensions disable $ext;
-done
-gnome-extensions enable pika-darkmode@pika.com
-gnome-extensions enable ubuntu-appindicators@ubuntu.com

data/layout-scripts/traditional.sh

@@ -1,14 +1,12 @@
 #! /bin/bash
 
 # Reset everything
-
-#
 dconf reset -f /org/gnome/shell/extensions/arcmenu/ || echo
 dconf reset -f /org/gnome/shell/extensions/dash-to-dock/ || echo
 dconf reset -f /org/gnome/shell/extensions/dash-to-panel/ || echo
 dconf reset -f /org/gnome/shell/extensions/just-perfection/ || echo
 gnome-extensions reset arcmenu@arcmenu.com || echo
-gnome-extensions reset pika-dock@pika.com || echo
+gnome-extensions reset dash-to-dock@micxgx.gmail.com || echo
 gnome-extensions reset dash-to-panel@jderose9.github.com || echo
 gnome-extensions reset just-perfection-desktop@just-perfection || echo
 gnome-extensions reset launch-new-instance@gnome-shell-extensions.gcampax.github.com || echo

data/layout-scripts/unity.sh

@@ -1,14 +1,12 @@
 #! /bin/bash
 
 # Reset everything
-
-#
 dconf reset -f /org/gnome/shell/extensions/arcmenu/ || echo
 dconf reset -f /org/gnome/shell/extensions/dash-to-dock/ || echo
 dconf reset -f /org/gnome/shell/extensions/dash-to-panel/ || echo
 dconf reset -f /org/gnome/shell/extensions/just-perfection/ || echo
 gnome-extensions reset arcmenu@arcmenu.com || echo
-gnome-extensions reset pika-dock@pika.com || echo
+gnome-extensions reset dash-to-dock@micxgx.gmail.com || echo
 gnome-extensions reset dash-to-panel@jderose9.github.com || echo
 gnome-extensions reset just-perfection-desktop@just-perfection || echo
 gnome-extensions reset launch-new-instance@gnome-shell-extensions.gcampax.github.com || echo
@@ -33,7 +31,7 @@ dconf write /org/gnome/shell/extensions/just-perfection/clock-menu-position '1'
 
 
 # Enable Dash
-gnome-extensions enable pika-dock@pika.com
+gnome-extensions enable dash-to-dock@micxgx.gmail.com
 # Enable just perfection
 gnome-extensions enable just-perfection-desktop@just-perfection
 # Enable Desktop Icons

data/polkit-1/actions/com.github.pikaos-linux.pikagnomelayouts.papirus.policy

@@ -4,15 +4,15 @@
  "http://www.freedesktop.org/software/polkit/policyconfig-1.dtd">
 <policyconfig>
 
-  <action id="fkm.change.scx">
+  <action id="com.github.pikaos-linux.pikagnomelayouts.papirus">
-    <message>Authentication is required to change the SCX Scheduler</message>
+    <message>Authentication is required to change papirus folders colors</message>
-    <icon_name>com.github.cosmicfusion.fedora-kernel-manager</icon_name>
+    <icon_name>desktop</icon_name>
     <defaults>
       <allow_any>auth_admin</allow_any>
       <allow_inactive>auth_admin</allow_inactive>
       <allow_active>auth_admin</allow_active>
     </defaults>
-    <annotate key="org.freedesktop.policykit.exec.path">/usr/lib/fedora-kernel-manager/scripts/change_scx.sh</annotate>
+    <annotate key="org.freedesktop.policykit.exec.path">/usr/lib/pika/gnome-layouts/papirus-folders</annotate>
     <annotate key="org.freedesktop.policykit.exec.allow_gui">true</annotate>
   </action>
 

data/polkit-1/actions/fkm.kernel.cachyos.init.policy

@@ -1,19 +0,0 @@
-<?xml version="1.0" encoding="UTF-8"?>
-<!DOCTYPE policyconfig PUBLIC
- "-//freedesktop//DTD PolicyKit Policy Configuration 1.0//EN"
- "http://www.freedesktop.org/software/polkit/policyconfig-1.dtd">
-<policyconfig>
-
-  <action id="fkm.kernel.cachyos.init">
-    <message>Authentication is required to initialize the Cachyos kernel repo</message>
-    <icon_name>com.github.cosmicfusion.fedora-kernel-manager</icon_name>
-    <defaults>
-      <allow_any>auth_admin</allow_any>
-      <allow_inactive>auth_admin</allow_inactive>
-      <allow_active>auth_admin</allow_active>
-    </defaults>
-    <annotate key="org.freedesktop.policykit.exec.path">/usr/lib/fedora-kernel-manager/scripts/kernel-cachyos-init.sh</annotate>
-    <annotate key="org.freedesktop.policykit.exec.allow_gui">true</annotate>
-  </action>
-
-</policyconfig>

data/polkit-1/actions/fkm.modify.package.policy

@@ -1,19 +0,0 @@
-<?xml version="1.0" encoding="UTF-8"?>
-<!DOCTYPE policyconfig PUBLIC
- "-//freedesktop//DTD PolicyKit Policy Configuration 1.0//EN"
- "http://www.freedesktop.org/software/polkit/policyconfig-1.dtd">
-<policyconfig>
-
-  <action id="fkm.modify.package">
-    <message>Authentication is required to modify system packages</message>
-    <icon_name>com.github.cosmicfusion.fedora-kernel-manager</icon_name>
-    <defaults>
-      <allow_any>auth_admin</allow_any>
-      <allow_inactive>auth_admin</allow_inactive>
-      <allow_active>auth_admin</allow_active>
-    </defaults>
-    <annotate key="org.freedesktop.policykit.exec.path">/usr/lib/fedora-kernel-manager/scripts/modify_package.sh</annotate>
-    <annotate key="org.freedesktop.policykit.exec.allow_gui">true</annotate>
-  </action>
-
-</policyconfig>

data/polkit-1/rules.d/99-com.github.pikaos-linux.pikagnomelayouts.papirus.rules

@@ -0,0 +1,6 @@
+/* Allow passwordless auth for com.github.pikaos-linux.pikagnomelayouts.papirus
+polkit.addRule(function(action, subject) {
+    if (action.id == "com.github.pikaos-linux.pikagnomelayouts.papirus") {
+        return polkit.Result.YES;
+    }
+});

data/polkit-1/rules.d/99-fkm.kernel.cachyos.init.rules

@@ -1,6 +0,0 @@
-/* Allow passwordless auth for fkm.kernel.cachyos.init
-polkit.addRule(function(action, subject) {
-    if (action.id == "fkm.kernel.cachyos.init") {
-        return polkit.Result.YES;
-    }
-});

data/scripts/dconf-accent.sh

@@ -0,0 +1,12 @@
+#! /usr/bin/bash
+# Enable extensions
+gnome-extensions enable custom-accent-colors@demiskp
+gnome-extensions enable user-theme@gnome-shell-extensions.gcampax.github.com
+# Set accent color settings
+dconf write /org/gnome/shell/extensions/custom-accent-colors/accent-color "'"$1"'"
+dconf write /org/gnome/shell/extensions/custom-accent-colors/theme-flatpak true
+dconf write /org/gnome/shell/extensions/custom-accent-colors/theme-gtk3 true
+dconf write /org/gnome/shell/extensions/custom-accent-colors/theme-shell true
+# Refresh Shell
+dconf write /org/gnome/shell/extensions/user-theme/name "''"
+dconf write /org/gnome/shell/extensions/user-theme/name "'CustomAccentColors'"

data/scripts/enable-pika-default-gex.sh

@@ -0,0 +1,7 @@
+#! /bin/bash
+
+gnome-extensions enable ubuntu-appindicators@ubuntu.com
+gnome-extensions enable legacyschemeautoswitcher@joshimukul29.gmail.com
+gnome-extensions enable user-theme@gnome-shell-extensions.gcampax.github.com
+gnome-extensions enable custom-accent-colors@demiskp
+gnome-extensions enable pop-shell@system76.com

data/scripts/papirus-folders

@@ -0,0 +1,533 @@
+#!/usr/bin/env bash
+# This script allows changing the color of folders in Papirus icon theme
+#
+# @author: Sergei Eremenko (https://github.com/SmartFinn)
+# @license: MIT license (MIT)
+# @link: https://github.com/PapirusDevelopmentTeam/papirus-folders
+
+if test -z "$BASH_VERSION"; then
+	printf "Error: this script only works in bash.\n" >&2
+	exit 1
+fi
+
+if (( BASH_VERSINFO[0] * 10 + BASH_VERSINFO[1] < 40 )); then
+	printf "Error: this script requires bash version >= 4.0\n" >&2
+	exit 1
+fi
+
+# set -x  # Uncomment to debug this shell script
+set -o errexit \
+	-o noclobber \
+	-o pipefail
+
+readonly THIS_SCRIPT="$(readlink -f "${BASH_SOURCE[0]}")"
+readonly PROGNAME="$(basename "${BASH_SOURCE[0]}")"
+readonly VERSION="1.12.0"
+readonly -a ARGS=("$@")
+
+msg() {
+	printf "%s: %b\n" "$PROGNAME" "$*"
+}
+
+verbose() {
+	[ -t 4 ] || return 0
+	msg "$@" >&4
+}
+
+err() {
+	msg "Error:" "$*" >&2
+}
+
+_exit() {
+	msg "$*" "Exiting ..."
+	exit 0
+}
+
+fatal() {
+	err "$*"
+	exit 1
+}
+
+usage() {
+	cat <<- EOF
+	USAGE
+	  $ $PROGNAME [options] -t <theme> {-C --color} <color>
+	  $ $PROGNAME [options] -t <theme> {-D --default}
+	  $ $PROGNAME [options] -t <theme> {-R --restore}
+	OPERATIONS
+	  -C --color <color>  change color of folders
+	  -D --default        back to the default color
+	  -R --restore        restore the last used color from the config file
+	OPTIONS
+	  -l --list           show available colors
+	  -o --once           do not save the changes to the config file
+	  -t --theme <theme>  make changes to the specified theme (Default: Papirus)
+	  -u --update-caches  update icon caches for Papirus and siblings
+	  -V --version        print $PROGNAME version and exit
+	  -v --verbose        be verbose
+	  -h --help           show this help
+	EOF
+
+	exit "${1:-0}"
+}
+
+_is_root_user() {
+	if [ "$(id -u)" -eq 0 ]; then
+		return 0
+	fi
+
+	return 1
+}
+
+_is_user_dir() {
+	[ -n "$USER_HOME" ] || return 1
+
+	# if $THEME_DIR is placed in home dir
+	if [ -z "${THEME_DIR##"$USER_HOME"/*}" ]; then
+		return 0
+	fi
+
+	return 1
+}
+
+_is_writable() {
+	if [ -w "$THEME_DIR/48x48/places/folder.svg" ]; then
+		return 0
+	fi
+
+	return 1
+}
+
+_is_valid_color() {
+	local color="$1"
+
+	eval "$(declare_colors)"
+
+	for i in "${colors[@]}"; do
+		[ "$i" == "$color" ] || continue
+		return 0
+	done
+
+	return 1
+}
+
+declare_colors() {
+	local color=''
+	local -a colors=()
+	local -a valid_colors=("adwaita" "black" "blue" "bluegrey" "breeze" "brown"
+		"carmine" "cyan" "darkcyan" "deeporange" "green" "grey"
+		"indigo" "magenta" "nordic" "orange" "palebrown" "paleorange"
+		"pink" "purple" "red" "teal" "violet" "white" "yaru" "yellow")
+
+	for color in "${valid_colors[@]}"; do
+		if [ -e "$THEME_DIR/48x48/places/folder-$color.svg" ]; then
+			colors=( "${colors[@]}" "$color" )
+		fi
+	done
+
+	# return array of colors
+	declare -p colors
+}
+
+declare_current_color() {
+	local icon_file icon_name current_color=''
+
+	icon_file=$(readlink -f "$THEME_DIR/48x48/places/folder.svg")
+	icon_name=$(basename "$icon_file" .svg)
+	current_color="${icon_name##*-}"
+
+	declare -p current_color
+}
+
+get_theme_dir() {
+	local data_dir icons_dir
+	local -a data_dirs=()
+	local -a icons_dirs=(
+		"$USER_HOME/.icons"
+		"${XDG_DATA_HOME:-$USER_HOME/.local/share}/icons"
+	)
+
+	# Get data directories from XDG_DATA_DIRS variable and
+	# convert colon-separated list into bash array
+	IFS=: read -ra data_dirs <<< "${XDG_DATA_DIRS:-/usr/local/share:/usr/share}"
+
+	for data_dir in "${data_dirs[@]}"; do
+		[ -d "$data_dir/icons" ] || continue
+		icons_dirs=( "${icons_dirs[@]}" "${data_dir%/}/icons" )
+	done
+
+	for icons_dir in "${icons_dirs[@]}"; do
+		[ -f "$icons_dir/$THEME_NAME/index.theme" ] || continue
+		printf '%s' "$icons_dir/$THEME_NAME"
+		verbose "'$THEME_NAME' is found in '$icons_dir'."
+		return 0
+	done
+
+	return 1
+}
+
+get_real_user() {
+	# return name of the user that runs the script
+	local user=''
+
+	if [ -n "$PKEXEC_UID" ]; then
+		user="$(id -nu "$PKEXEC_UID")"
+	elif [ -n "$SUDO_USER" ]; then
+		user="$SUDO_USER"
+	else
+		user="$(id -nu)"
+	fi
+
+	printf '%s' "$user"
+}
+
+get_user_home() {
+	local user="$1"
+
+	getent passwd "$user" | awk -F: '{print $(NF-1)}'
+}
+
+config() {
+	# usage: config [{-n --new}] {-s --set} key=value... | {-g --get} key...
+	local config_dir
+	local config_file
+
+	if _is_user_dir; then
+		config_dir="${XDG_CONFIG_HOME:-$USER_HOME/.config}/$PROGNAME"
+	else
+		config_dir="/var/lib/$PROGNAME"
+	fi
+
+	config_file="$config_dir/keep"
+
+	while (( "$#" )); do
+		case "$1" in
+			-g|--get) shift;
+				[ -f "$config_file" ] || return 1
+
+				for key; do
+					[ -n "$key" ] || continue
+					awk -F= -v key="$key" '
+					$1 == key {
+						print $2
+						exit
+					}
+					' "$config_file"
+				done
+
+				break
+				;;
+			-n|--new) shift;
+				rm -f "$config_file"
+				;;
+			-e|--exists) shift;
+				# return 1 if test config_file not exist or empty
+				if [ -f "$config_file" ] && [ -s "$config_file" ]; then
+					return 0
+				else
+					return 1
+				fi
+				;;
+			-s|--set) shift;
+				[ "$ONCE" -eq "1" ] && break
+				[ -d "$config_dir"  ] || mkdir -p "$config_dir"
+				[ -f "$config_file" ] || touch "$config_file"
+
+				verbose "Saving params to '$config_file' ..."
+				cat >> "$config_file" <<- EOF
+				$(for key_value; do echo "$key_value"; done)
+				EOF
+
+				break
+				;;
+			*)
+				err "illegal option -- '$1'"
+				return 1
+		esac
+	done
+
+	return 0
+}
+
+change_color() {
+	local color="${1:?${FUNCNAME[-1]}: color is not set}"
+	local size prefix file_path file_name symlink_path
+	local -a sizes=(22x22 24x24 32x32 48x48 64x64)
+	local -a prefixes=("folder-$color" "user-$color")
+
+	for size in "${sizes[@]}"; do
+		for prefix in "${prefixes[@]}"; do
+			for file_path in "$THEME_DIR/$size/places/$prefix"{-*,}.svg; do
+				[ -f "$file_path" ] || continue  # is a file
+				[ -L "$file_path" ] && continue  # is not a symlink
+
+				file_name="${file_path##*/}"
+				symlink_path="${file_path/-$color/}"  # remove color suffix
+
+				ln -sf "$file_name" "$symlink_path" || {
+					fatal "Fail to create '$symlink_path' symlink"
+				}
+			done
+		done
+	done
+}
+
+list_colors() {
+	local color='' prefix=''
+
+	eval "$(declare_colors)"
+	eval "$(declare_current_color)"
+
+	for color in "${colors[@]}"; do
+		if [ "$current_color" == "$color" ]; then
+			prefix='>'
+		else
+			prefix=''
+		fi
+
+		printf '%2s %s\n' "$prefix" "$color"
+	done
+}
+
+do_change_color() {
+	_is_valid_color "$SELECTED_COLOR" || {
+		fatal "Unable to find '$SELECTED_COLOR' color in '$THEME_NAME'"
+	}
+
+	verify_privileges
+
+	msg "Changing color of folders to '$SELECTED_COLOR' for '$THEME_NAME' ..."
+	change_color "$SELECTED_COLOR"
+	config --new --set "theme=$THEME_NAME" "color=$SELECTED_COLOR"
+	update_icon_cache
+}
+
+do_revert_default() {
+	verify_privileges
+
+	msg "Restoring default folder color for '$THEME_NAME' ..."
+	change_color "${DEFAULT_COLORS[$THEME_NAME]:-blue}"
+	config --new
+	update_icon_cache
+}
+
+do_restore_color() {
+	local saved_color=''
+
+	if config --exists; then
+		THEME_NAME="$(config --get theme)"
+		saved_color="$(config --get color)"
+	else
+		_exit "Unable to find config file."
+	fi
+
+	THEME_DIR="$(get_theme_dir)" || {
+		_exit "Unable to find '$THEME_NAME' icon theme."
+	}
+
+	_is_valid_color "$saved_color" || {
+		_exit "Unable to find '$saved_color' color in '$THEME_NAME'."
+	}
+
+	verify_privileges
+
+	change_color "$saved_color"
+	msg "'$saved_color' color of the folders has been restored."
+}
+
+delete_icon_caches() {
+	local icon_cache real_user='' real_home=''
+
+	real_user="$(get_real_user)"
+	real_home="$(get_user_home "$real_user")"
+
+	declare -a icon_caches=(
+		# KDE 5 icon caches
+		"$real_home/.cache/icon-cache.kcache"
+		"/var/tmp/kdecache-$real_user/icon-cache.kcache"
+	)
+
+	verbose "Deleting icon caches ..."
+	for icon_cache in "${icon_caches[@]}"; do
+		[ -e "$icon_cache" ] || continue
+		rm -f "$icon_cache"
+	done
+}
+
+update_icon_cache() {
+	[ -z "$DISABLE_UPDATE_ICON_CACHE" ] || return 0
+
+	delete_icon_caches
+
+	verbose "Rebuilding icon cache for '$THEME_NAME' ..."
+	gtk-update-icon-cache -qf "$THEME_DIR" || true
+}
+
+update_icon_caches() {
+	local theme=''
+
+	delete_icon_caches
+
+	for theme in "${!DEFAULT_COLORS[@]}"; do
+		[ -f "$THEME_DIR/../$theme/index.theme" ] || continue
+		verbose "Rebuilding icon cache for '$theme' ..."
+		gtk-update-icon-cache -qf "$THEME_DIR/../$theme" || true
+	done
+}
+
+verify_privileges() {
+	_is_root_user && return 0
+	_is_user_dir  && return 0
+	_is_writable  && return 0
+
+	verbose "This operation requires root privileges."
+
+	if command -v sudo > /dev/null; then
+		exec sudo USER_HOME="$USER_HOME" XDG_DATA_DIRS="$XDG_DATA_DIRS" \
+			"$THIS_SCRIPT" "${ARGS[@]}"
+	else
+		fatal "You need to be root to run this command."
+	fi
+}
+
+parse_args() {
+	local arg='' opt=''
+	local -a args=()
+
+	# Show help if no argument is passed
+	if [ -z "$1" ]; then
+		usage 2
+	fi
+
+	# Translate --gnu-long-options to -g (short options)
+	for arg; do
+		case "$arg" in
+			--help)           args+=( -h ) ;;
+			--list)           args+=( -l ) ;;
+			--once)           args+=( -o ) ;;
+			--theme)          args+=( -t ) ;;
+			--update-caches)  args+=( -u ) ;;
+			--verbose)        args+=( -v ) ;;
+			--color|--colour) args+=( -C ) ;;
+			--default)        args+=( -D ) ;;
+			--restore)        args+=( -R ) ;;
+			--version)        args+=( -V ) ;;
+			--[0-9a-Z]*)
+				err "illegal option -- '$arg'"
+				usage 2
+				;;
+			*) args+=("$arg")
+		esac
+	done
+
+	# Reset the positional parameters to the short options
+	set -- "${args[@]}"
+
+	while getopts ":C:DRlot:uvVh" opt; do
+		case "$opt" in
+			C ) OPERATIONS+=("change-color")
+				SELECTED_COLOR="$OPTARG"
+				;;
+			D ) OPERATIONS+=("revert-default") ;;
+			R ) OPERATIONS+=("restore-color") ;;
+			l ) OPERATIONS+=("list-colors") ;;
+			o ) ONCE=1 ;;
+			t ) THEME_NAME="$OPTARG" ;;
+			u ) OPERATIONS+=("update-icon-caches") ;;
+			v ) VERBOSE=1 ;;
+			V ) printf "%s %s\n" "$PROGNAME" "$VERSION"
+				exit 0
+				;;
+			h ) usage 0 ;;
+			: ) err "option requires an argument -- '-$OPTARG'"
+				usage 2
+				;;
+			\?) err "illegal option -- '-$OPTARG'"
+				usage 2
+				;;
+		esac
+	done
+
+	shift $((OPTIND-1))
+
+	# Return an error if any positional parameters are found
+	if [ -n "$1" ]; then
+		err "illegal parameter -- '$1'"
+		usage 2
+	fi
+}
+
+main() {
+	# default values of options
+	declare THEME_NAME="${THEME_NAME:-Papirus}"
+	declare -i VERBOSE="${VERBOSE:-0}"
+	declare -i ONCE="${ONCE:-0}"
+	declare -A DEFAULT_COLORS=(
+		['ePapirus']='blue'
+		['Papirus']='blue'
+		['Papirus-Dark']='blue'
+	)
+
+	declare SELECTED_COLOR=''
+	declare -a OPERATIONS=()
+
+	parse_args "${ARGS[@]}"
+
+	if [ "$VERBOSE" -eq "1" ]; then
+		# open a file descriptor for verbose messages
+		exec 4>&1
+		# close the file descriptor before exiting
+		trap 'exec 4>&-' EXIT HUP INT TERM
+	fi
+
+	# set USER_HOME variable instead HOME to prevent changing user's icons
+	# when running with sudo
+	[ -n "$USER_HOME" ] || USER_HOME="$(get_user_home "$(id -nu)")"
+
+	if [ -f "$THEME_NAME/index.theme" ]; then
+		# THEME_NAME is a path to an icon theme
+		THEME_DIR="$(readlink -f "$THEME_NAME")"
+		THEME_NAME="$(basename "$THEME_DIR")"
+		verbose "The path to '$THEME_DIR' theme is specified."
+	else
+		THEME_DIR="$(get_theme_dir)" || {
+			fatal "Fail to find '$THEME_NAME' icon theme."
+		}
+	fi
+
+	for operation in "${OPERATIONS[@]}"; do
+		case "$operation" in
+			change-color)
+				do_change_color
+				;;
+			revert-default)
+				do_revert_default
+				;;
+			restore-color)
+				do_restore_color
+				;;
+			list-colors)
+				if [ -t 1 ]; then
+					cat <<- EOF
+					List of available colors:
+					$(list_colors)
+					EOF
+				else
+					list_colors
+				fi
+				;;
+			update-icon-caches)
+				verify_privileges
+				update_icon_caches
+				;;
+		esac
+	done
+
+	verbose "Done!"
+
+	exit 0
+}
+
+main
+
+exit 1