smw.dge

#!/bin/sh
##############
# Start script for Super Mario War
# author: zLouD
# date: 2010/10/18
# version: 1.3
# note: this script currently only supports Dingux / OpenDingux
# ---
# return values:
# 1 = could not change to directory
# 2 = file not found
##
#TODO: nothin? :/
#CONTACT: irc.freenode.net/#dingoonity
##
##############
# change to the script directory
cd $(dirname $0) || return 1

## output INFO msgs to /dev/pts/0 or to log/info.log
if [ "$2" = '--log-to-file' ] && [ ! -c /dev/pts/0 ]; then
    LOG='info.log'
else
    LOG='/dev/pts/0'
fi

# clear display
clear; echo -e "
  ........W@,@W
 .........W,.:.W
 ....:....W .::W
 .....@@*@+:.::W Super
 .....@+@@@@.:.W  Mario
 ....@+@:++@.:.W   War
 .....@+++# .::W    1.7
 ....@##*#@@.::W April Fools
 ...@:@@**:*.:.W    Edition
 ...@*@###+@.:.W
 ....@@@..W,.::W   Start script by
 ..+......@,.::W     _____________
 ..:......W,,::W    /\\\           /\\
 W@@@@@@@@@@@@@     |    zLouD    |
  WWWWWWWWWWWW      \_____________/
" >/dev/pts/0

## vars
# Determine how much free memory is available
DISKFREE=$(df | grep 'boot' | awk '{print $4}')

# Determine total memory
TOTALMEM=$(cat /proc/meminfo | grep MemTotal | awk '{print $2}')

# Is a swapfile enabled?
SWAP=$(grep -co '\.swap' /proc/swaps)

# Is zramswap enabled?
ZRAM=$(grep -co 'zram0' /proc/swaps)

# How large should the zramswap be?
ZSWAPSIZE=20000

# Empty Var for swap size
SWAPSIZE=''

# The location of the default swapfile
SWAPFILE='/boot/.swap'

# Determine which Super Mario War binary should be used
EXEC=$([ $(uname -r | grep -co '\.24') -eq 1 ] && echo './smw' || echo './smw.od')

# Information about the script version
SCRIPTVER="Super Mario War start script in version 1.3 from 2010/10/18"

# empty OUTPUT variable
OUTPUT=''

## colors
GREEN="\033[1;32m"  # Level 1
YELLOW="\033[1;33m" # Level 2
RED="\033[1;31m"    # Level 3
WHITE="\033[1;37m"
NO_COLOR="\033[0m"

## text
ALL_OK='SWAP exists. Now starting Super Mario War'
CONF_ZRAM='configure and create the zram swap'
CONF_ZRAM_OK='zramswap created; starting game'
SWAPFILE_OK='Swapfile activated; starting game'
SWAPFILE_NEW='creating swapfile...'
SWAPFILE_NEW_OK='Swapfile created and activated; starting game'
NO_DISK_SPACE='Not enough disk space available'

## functions
## printInfo <colorlevel> <msg>
printInfo () {
    if [ $# -lt 2 ]; then
        return 1
    fi

    echo -e "${WHITE}smw.dge:\t[ ${1}${2}${WHITE}]${NO_COLOR}" >${LOG}
}

## createDialog <msgbox> <title> <msg> <height> <width>
## createDialog <menu> <msg> <height> <width> <menu_height> <tag1> <item1> [cancel-label] [ok-label]
createDialog () {
    if [ $# -lt 5 ]; then
        return 1
    fi

    if [ "$1" = 'msgbox' ]; then
        dialog --title "$2" --ok-label 'Okay' --msgbox "$3" $4 $5 >${OUTPUT}
    elif [ "$1" = 'menu' ]; then
        local cancel="$8"
        local ok="$9"
        if [ ! ${cancel} ]; then
            cancel='No'
        fi
        if [ ! ${ok} ]; then
            ok='Yes'
        fi

        dialog --cancel-label "${cancel}" --ok-label "${ok}" --menu "$2" \
            $3 $4 $5 "$6" "$7" >${OUTPUT}
    fi
}

## INFO: starting and showing arguments
printInfo "${YELLOW}" "start script ($*)"
## INFO


## check check, 1..2..3..
if [ ! -e ${EXEC} ]; then
    ## INFO: without game, without me!
    printInfo "${RED}" "ERROR: ${EXEC} was not found!"
    return 2
fi

## INFO: We found our game!
printInfo "${GREEN}" "${EXEC} was found! :)"
## INFO

## output to display or terminal
if [ "$2" = '--term' ]; then
    OUTPUT=$(tty)
else
    OUTPUT='/dev/tty1'
fi

## main
case "$1" in
    -h|--help)
        [ -e './README.txt' ] || return 2
        ## INFO: show readme
        printInfo "${YELLOW}" "help is displayed"
        ## INFO
        createDialog 'msgbox' 'Help - Super Mario War' "$(cat ./README.txt)" 30 60
        ## INFO
        printInfo "${GREEN}" "exited sucessfully"
        ## INFO
    ;;
    -sv|--script-version)
        ## INFO
        printInfo "${YELLOW}" "script version is displayed"
        ## INFO
        createDialog 'msgbox' 'Super Mario War - smw.dge' "${SCRIPTVER}" 23 56
        ## INFO
        printInfo "${GREEN}" "exited sucessfully"
        ## INFO
    ;;
    -v|--version)
        [ -e './VERSION' ] || return 2
        ## INFO
        printInfo "${YELLOW}" "version information is displayed"
        ## INFO
        createDialog 'msgbox' 'Version info - Super Mario War' "$(cat ./VERSION)" 23 56
        ## INFO
        printInfo "${GREEN}" "exited sucessfully"
        ## INFO
    ;;
    -dbg|--debug)
        printInfo "${YELLOW}" "free disk space: ${DISKFREE}"
        printInfo "${YELLOW}" "total memory: ${TOTALMEM}"
        printInfo "${YELLOW}" "swap file activated?: ${SWAP}"
        printInfo "${YELLOW}" "compressed swap activated?: ${ZRAM}"
        printInfo "${YELLOW}" "size of compressed swap (in kiloBytes): ${ZSWAPSIZE}"
        printInfo "${YELLOW}" "location of the swapfile: ${SWAPFILE}"
        printInfo "${YELLOW}" "smw binary for this kernel: ${EXEC}"
        printInfo "${YELLOW}" "script version string: ${SCRIPTVER}"
        printInfo "${YELLOW}" "where goes the output to?: ${OUTPUT}"
        printInfo "${YELLOW}" "where are INFO msgs displayed?: ${LOG}"
    ;;
    *)
        # if you have more than 32MB RAM, you're a lucky
        # also for A330 detection which has 64MB
        if [ ${TOTALMEM} -gt 44604 ]; then
            if [ $? -eq 0 ]; then
                ## INFO
                printInfo "${GREEN}" "device has enough free memory (probably A320 with 64MB mod or A330)"
                ## INFO
                exec ${EXEC} "$@"   ## smw binary!
            fi
        fi

        if [ "$1" != '--force-zram' ] && [ $SWAP -eq 1 ] && [ -e $SWAPFILE ] || [ $ZRAM -eq 1 ]; then
            if [ $? -eq 0 ]; then
                printInfo "${GREEN}" "${ALL_OK}"
                exec ${EXEC} "$@"   ## smw binary!
            fi

        elif [ "$1" = '--force-zram' ] || [ "$1" != '--no-zram' ] &&
                [ -b /dev/zram0 ] && [ -e /usr/sbin/zramconfig ]; then
            createDialog 'menu' "Do you want to create a compressed swap in your RAM? (recommended!)" \
                23 42 7 "default" "/dev/zram0"
            if [ $? -eq 0 ]; then
                printInfo "${YELLOW}" "${CONF_ZRAM}"
                zramconfig /dev/zram0 --disksize_kb=$ZSWAPSIZE --init &&
                mkswap /dev/zram0 ||
                ## INFO
                printInfo "${RED}" "WARNING: could not configure the zram device, it's probably already configured!"
                ## INFO
                [ $ZRAM -eq 1 ] &&
                ## INFO
                printInfo "${RED}" "WARNING: zram swap is already activated! I restart the script for you. :)" &&
                ## INFO
                exec $0

                swapon -p 100 /dev/zram0 &&
                ## INFO
                printInfo "${RED}" "activated zram swap, now restarting" &&
                ## INFO
                exec $0 ||
                ## INFO
                printInfo "${RED}" "ERROR: can't start the game without swap"
                ## INFO
                return
            elif [ $? -eq 1 ]; then
                ## INFO
                printInfo "${YELLOW}" "user doesn't want to create compressed swap"
                ## INFO

                createDialog 'menu' "Do you want to create a swap file? It'll be just activated if its exists already." \
                    23 42 7 "default" "/boot/.swap"

                if [ $? -eq 0 ]; then
                    ## INFO
                    printInfo "${RED}" "restarting script with '--no-zram' argument"
                    ## INFO
                    exec $0 '--no-zram'

                elif [ $? -eq 1 ]; then
                    ## INFO
                    printInfo "${RED}" "ERROR: can't start the game without swap"
                    ## INFO
                    return
                fi
            fi

            if [ $? -eq 0 ]; then
                printInfo "${GREEN}" "${CONF_ZRAM_OK}"
                exec ${EXEC} "$@"    ## smw binary!
            fi

        elif [ -e $SWAPFILE ]; then
            ## INFO
            printInfo "${YELLOW}" "found a swapfile, trying to activate it"
            ## INFO
            swapon -p 50 $SWAPFILE
            if [ $? -ne 0 ]; then
                createDialog 'menu'"An error has occurred(the swapfile is probably not right formated!).\nDo you want to create a new swap file?" \
                    23 42 7 "default" "/boot/.swap"
                if [ $? -eq 0 ]; then
                    ## INFO
                    printInfo "${YELLOW}" "delete the corrupted swapfile and restart"
                    ## INFO
                    rm -f $SWAPFILE && exec $0 '--no-zram'
                elif [ $? -eq 1 ]; then
                    [ -b /dev/zram0 ] ||
                    ## INFO
                    printInfo "${RED}" "ERROR: can't start the game without swap"
                    ## INFO
                    return

                    createDialog 'menu' "Do you want to create a compressed swap in your RAM instead? (recommended!)" \
                        23 42 7 "default" "/dev/zram0"
                    if [ $? -eq 0 ]; then
                        ## INFO
                        printInfo "${RED}" "restarting script with '--force-zram' argument"
                        ## INFO
                        exec $0 '--force-zram'

                    elif [ $? -eq 1 ]; then
                        ## INFO
                        printInfo "${RED}" "ERROR: can't start the game without swap"
                        ## INFO
                        return
                    fi
                fi
            fi

            if [ $? -eq 0 ]; then
                printInfo "${GREEN}" "${SWAPFILE_OK}"
                exec ${EXEC} "$@"    ## smw binary!
            fi

        elif [ $DISKFREE -gt 32768 ]; then
            createDialog 'menu' "You are going to create a swapfile now.\nDo you still want to create a new swap file?" \
                23 42 7 "default" "/boot/.swap"
            if [ $? -eq 0 ]; then
                createDialog 'menu' "Select filesize for the swapfile." \
                    23 42 7 "default" "/boot/.swap" '64MB' '32MB'
                    if [ $? -eq 0 ]; then
                        SWAPSIZE=32768
                    else
                        SWAPSIZE=65536
                    fi
                if [ $? -eq 0 ]; then
                    printInfo "${YELLOW}" "${SWAPFILE_NEW}"
                    dd if=/dev/zero of=$SWAPFILE bs=1024 count=${SWAPSIZE} &&
                    mkswap $SWAPFILE &&
                    swapon -p 50 $SWAPFILE
                elif [ $? -eq 1 ]; then
                    [ -b /dev/zram0 ] ||
                    ## INFO
                    printInfo "${RED}" "ERROR: can't start the game without swap" &&
                    ## INFO
                    return

                    createDialog 'menu' "Do you want to create a compressed swap in your RAM instead? (recommended!)" \
                        23 42 7 "default" "/dev/zram0"
                    if [ $? -eq 0 ]; then
                        ## INFO
                        printInfo "${RED}" "restarting script with '--force-zram' argument"
                        ## INFO
                        exec $0 '--force-zram'

                    elif [ $? -eq 1 ]; then
                        ## INFO
                        printInfo "${RED}" "ERROR: can't start the game without swap"
                        ## INFO
                        return
                    fi
                fi
            fi
            if [ $? -eq 0 ]; then
                printInfo "${GREEN}" "${SWAPFILE_NEW_OK}"
                exec ${EXEC} "$@"    ## smw binary!
            fi

        else
            printInfo "${RED}" "${NO_DISK_SPACE}"
            createDialog 'msgbox' "Error: Not enough disk space available\n       Could not create a swap file\nSpace left:   ${DISKFREE} Bytes\nSpace Needed:   32768 Bytes\n\n-------\nPress Start to continue" \
                23 56

        fi
esac