Split Xbox ISO files when necessary, also build its attach.xbe

split-xiso.sh

#!/bin/bash

set -e

isoDir="$1"
if ! [ -d "$isoDir" ];
then
	echo "$isoDir not a dir"
  exit 1
fi

maxSize=4242538495 # 4 GiB minus 50 MiB (bytes)
part1Dir=$isoDir/.tmp1
part2Dir=$isoDir/.tmp2

mkdir -p "$part1Dir"
mkdir -p "$part2Dir"

for isoFile in $isoDir/*.iso; do
  echo "process $isoFile"
  isoSize=$(stat -c%s "$isoFile")

  echo "prepare"
  rm -rf $part1Dir/*
  rm -rf $part2Dir/*

  echo "extract xiso"
  extract-xiso "$isoFile" -d "$part1Dir" > /dev/null

  isoName=$(basename "$isoFile" .iso)
  mkdir "$isoDir/$isoName"

  # see https://github.com/greguz/attach-xbe-builder
  if [[ -f "$part1Dir/default.xbe" ]]; then
    echo "build default.xbe"
    ./build-attach-xbe-linux "$part1Dir/default.xbe" "$isoDir/$isoName/default.xbe"
  fi
  if [[ -f "$part1Dir/Default.xbe" ]]; then
    echo "build default.xbe"
    ./build-attach-xbe-linux "$part1Dir/Default.xbe" "$isoDir/$isoName/default.xbe"
  fi

  if [ $isoSize -gt $maxSize ]
  then
    oldSize=0
    echo "move files"

    find "$part1Dir" -type f | while read file
    do
      fileSize=$(stat --printf="%s" "$file")
      newSize=$(($oldSize + $fileSize))

      if [ $newSize -gt $maxSize ]
      then
        mvFile="${file/"$part1Dir"/"$part2Dir"}"
        mvDir=$(dirname "$mvFile")

        mkdir -p "$mvDir"
        mv "$file" "$mvFile"
      fi

      oldSize=$newSize
    done

    echo "build part1 iso"
    extract-xiso -c "$part1Dir" "$isoDir/$isoName/game.1.iso" > /dev/null

    echo "build part2 iso"
    extract-xiso -c "$part2Dir" "$isoDir/$isoName/game.2.iso" > /dev/null
  else
    echo "move iso"
    mv "$isoFile" "$isoDir/$isoName/game.iso"
  fi
done

echo "cleanup"
rm -rf "$part1Dir"
rm -rf "$part2Dir"