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rofi/script/rofi-theme-selector

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#!/usr/bin/env bash
#
# This code is released in public domain by Dave Davenport <qball@gmpclient.org>
#
ROFI=$(which rofi)
SED=$(which sed)
MKTEMP=$(which mktemp)
if [ -z "${SED}" ]
then
echo "Did not find 'sed', script cannot continue."
exit 1
fi
if [ -z "${MKTEMP}" ]
then
echo "Did not find 'mktemp', script cannot continue."
exit 1
fi
if [ -z "${ROFI}" ]
then
echo "Did not find rofi, there is no point to continue."
exit 1
fi
TMP_CONFIG_FILE=$(${MKTEMP})
##
# Array with parts to the found themes.
# And array with the printable name.
##
declare -a themes
declare -a theme_names
##
# Function that tries to find all installed rofi themes.
# This fills in #themes array and formats a displayable string #theme_names
##
function find_themes()
{
DIRS=${XDG_DATA_DIRS}
if [ -z "${XDG_DATA_DIRS}" ]
then
echo "XDG_DATA_DIRS needs to be set for this script to function."
exit 1;
fi
# Add user dir.
DIRS+=":${HOME}/.local/share/"
OLDIFS=${IFS}
IFS=:
for p in ${DIRS}; do
TD=${p}rofi/themes/
if [ -n "${p}" ] && [ -d "${TD}" ]
then
for file in ${TD}/*.theme
do
if [ -f "${file}" ]
then
themes+=(${file})
FN=$(basename ${file})
NAME=${FN%.*}
USER=$(${SED} -n 's/^! User: \(.*\)/\1/p' ${file} )
if [ -z "${USER}" ]
then
theme_names+=(${NAME})
else
theme_names+=("${NAME} by ${USER}")
fi
fi
done
fi
done
IFS=${OLDIFS}
}
##
# Create a copy of rofi
##
function create_config_copy()
{
${ROFI} -dump-xresources > ${TMP_CONFIG_FILE}
}
###
# Print the list out so it can be displayed by rofi.
##
function create_theme_list()
{
OLDIFS=${IFS}
IFS='|'
for themen in ${theme_names[@]}
do
echo ${themen}
done
IFS=${OLDIFS}
}
##
# Thee indicate what entry is selected.
##
declare -i SELECTED
function select_theme ()
{
local MORE_FLAGS=(-dmenu -format i -no-custom -p Theme -markup -config ${TMP_CONFIG_FILE} -i)
MORE_FLAGS+=(-kb-custom-1 "Alt-a")
local CUR="default"
while true
do
declare -i RTR
declare -i RES
local MESG="""You can preview themes by hitting <b>Enter</b>.
<b>Alt-a</b> to accept the new theme.
<b>Escape</b> to cancel
Current theme: <b>${CUR}</b>"""
RES=$( create_theme_list | ${ROFI} ${MORE_FLAGS[@]} -selected-row "${SELECTED}" -mesg "${MESG}")
RTR=$?
if [ ${RTR} = 10 ]
then
return 0;
elif [ ${RTR} = 1 ]
then
return 1;
fi
${SED} -i '/#include .*/d' ${TMP_CONFIG_FILE}
echo "#include \"${themes[${RES}]}\"" >> ${TMP_CONFIG_FILE}
CUR=${theme_names[${RES}]}
SELECTED=${RES}
done
}
###
# Create if not exists, then removes #include of .theme file (if present) and add the selected theme to the end.
# Repeated calls should leave the config clean-ish
###
function set_theme()
{
CDIR="${HOME}/.config/rofi/"
if [ ! -d "${CDIR}" ]
then
mkdir -p ${CDIR}
fi
if [ -f "${CDIR}/config" ]
then
${SED} -i "/#include \".*\.theme\"$/d" "${CDIR}/config"
fi
echo "#include \"${1}\"" >> "${CDIR}/config"
}
############################################################################################################
# Actual program execution
###########################################################################################################
##
# Find all themes
##
find_themes
##
# Do check if there are themes.
##
if [ ${#themes[@]} = 0 ]
then
${ROFI} -e "No themes found."
exit 0
fi
##
# Create copy of config to play with in preview
##
create_config_copy
##
# Show the themes to user.
##
if select_theme && [ -n "${SELECTED}" ]
then
# Set theme
set_theme "${themes[${SELECTED}]}"
fi
##
# Remove temp. config.
##
rm ${TMP_CONFIG_FILE}