rtsplit

#!/bin/sh

# RTSPLIT - a script to convert a raw RTANDROID zip file for PINN
# Usage - sudo rtsplit

base=`pwd`

if [ "$(id -u)" != "0" ]; then
    echo "This script must be run as root" 2>&1
    exit 1
fi

# set the following variables:
# raw = folder of original raw image source  (folder above /raw and /resources FAT32)
# dest = destination folder of converted image FAT32
# script = the folder this script is run from (on an EXT4 drive)

##################### STEP 1 #####################
decompress()
{
	#Step 1
	rm -rf $output
	mkdir -p $output
	cd $raw
	echo "decompress the tarball"
        unzip $srcfile.zip
}

##################### STEP 2 #####################
mountimage()
{
	#Step 2
	cd $raw

}


##################### STEP 3 #####################
archiveimage()
{
    #Step 3
    cd $raw
    mkdir -p $output

    echo "Tarring the boot partition"
    cd boot #on det

    tar cvf $output/boot.tar *
    cd ..
    cp system.img $output

}

##################### STEP 4 #####################
cleanup1()
{
    #Step 4
    echo "clean up"
    cd $raw
}

##################### STEP 5 #####################
Updateoutput()
{
    #Step 5
    echo "Update the new dist folder"
    cp $resources/${osname}_os.json $output/os.json
    cp $resources/partition_setup.sh $output
    cp $resources/partitions.json $output
    cp $resources/${srcfolder}.png $output/${osname}.png
    (cd $resources; tar xvf marketing.tar slides_vga)
    cp $resources/marketing.tar $output
    cp -r $resources/slides_vga $output
    cp $resources/release_notes.txt $output
    cp $resources/${osname}_flavours.json ${output}/flavours.json

    cd $raw
    echo "Update the JSON files"
}

##################### STEP 6 #####################
compress()
{
    #Step 6
    echo "Compressing boot tar file"
    (cd $output; xz -k boot.tar)

    echo "Compressing system img file"
    (cd $output; gzip system.img)
}

##################### STEP 7 #####################
cleanup2()
{
    #Step 7
    echo "Clean up #2"

    rm $raw/boot.tar >/dev/null
    rm $raw/system.img >/dev/null
    rm $raw/*.sh >/dev/null
    rm -rf $raw/boot >/dev/null
}

#################### PROCESS #####################
process()
{
    #$1 srcfolder
    srcfolder=$1
    #$2 New OS name folder
    osname=$2
    #$3 Compressed filename
    srcfile=$3
    echo "Processing " ${osname}

    cd $base/$srcfolder
    rootdir=`pwd`
    raw=$rootdir/raw
    resources=$rootdir/resources
    output=$rootdir/output/${osname}



    #-------------------- STEP 1 --------------------#
        decompress

    #-------------------- STEP 2 --------------------#
        mountimage

    #-------------------- STEP 3 --------------------#
        archiveimage

    #-------------------- STEP 4 --------------------#
        cleanup1

    #-------------------- STEP 5 --------------------#
        Updateoutput

    #-------------------- STEP 6 --------------------#
        compress

    #-------------------- STEP 7 --------------------#
        cleanup2
}

###################### MAIN ######################


#rtandroid
    process rtandroid rtandroid rtandroid-aosp-7.1-20170315-rpi3

echo "DONE"