distribution/packages/jelos/sources/scripts/rom_system_split

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#!/bin/bash
# rom_system_split: split your roms across your local and external storage
# prerequesites:
# - local roms must be stored in "/storage/roms_local"
# - external roms must be stored in "/storage/roms"
# - you cannot spread the same system files across multiple locations
# NOTE: if duplicate systems are found, local folders will take preference
LOCAL_FOLDER_NAME="roms_local"
EXT_FOLDER_NAME="roms"
LOCAL_ROM_FOLDERS=$(
ls -d ${LOCAL_FOLDER_NAME}/*/ |
sed -e "s/${LOCAL_FOLDER_NAME}//g"
)
EXT_ROM_FOLDERS=$(
ls -d ${EXT_FOLDER_NAME}/*/ |
sed -e "s/${EXT_FOLDER_NAME}//g"
)
ES_SYSTEMS="/storage/.emulationstation/es_systems.cfg"
ES_LIST=$(
cat ${ES_SYSTEMS} |
grep "<path>" |
sed -e "s/<path>//g" -e "s/<\/path>//g" -e "s/\/storage\///g"
)
echo "LOCAL_FOLDER_NAME: ${LOCAL_FOLDER_NAME}"
echo "EXT_FOLDER_NAME: ${EXT_FOLDER_NAME}"
echo "EXT_STORAGE: ${EXT_STORAGE}"
echo "EXTERNAL: ${EXTERNAL}"
echo "LOCAL_ROM_FOLDERS: $LOCAL_ROM_FOLDERS{}"
echo "EXT_ROM_FOLDERS: ${EXT_ROM_FOLDERS}"
echo "ES_SYSTEMS: ${ES_SYSTEMS}"
echo "ES_LIST: ${ES_LIST}"
# required paramaters: local/external, rom folder list, es folder list
update_es_folders() {
folder_name=${LOCAL_FOLDER_NAME}
orig_folder_name=${EXT_FOLDER_NAME}
if [[ $1 == "external" ]]
then
folder_name=${EXT_FOLDER_NAME}
orig_folder_name=${LOCAL_FOLDER_NAME}
fi
folder_array=( $2 )
for folder in ${folder_array[@]}
do
system=${folder%?}
# check that the system exists in ES
if [[ $3 == *"${system}"* ]]
then
# skip if there are no files in the folder
if [ -z "$(ls -A /storage/${folder_name}${system})" ]
then
continue
fi
# if the folder doesn't exist in ES, update the original
if [[ $3 != *"${folder_name}${system}"* ]]
then
sed -i -e "s|<path>/storage/${orig_folder_name}${system}</path>|<path>/storage/${folder_name}${system}</path>|g" ${ES_SYSTEMS}
fi
fi
done
}
# check the external folders first
update_es_folders "external" "${EXT_ROM_FOLDERS}" "${ES_LIST}"
# next check the local folders
# if there are duplicate folders in EXTERNAL, LOCAL ones will take preference
update_es_folders "local" "${LOCAL_ROM_FOLDERS}" "${ES_LIST}"