Move Idea Caches to Ram

ramdisk_idea.sh

#!/usr/bin/env bash

set -x


# The RAM amount you want to allocate for RAM disk. One of
# 1024 2048 3072 4096 5120 6144 7168 8192
# By default will use 1/4 of your RAM

ramfs_size_mb=2048

mount_point=/Users/${USER}/ramdisk
ramfs_size_sectors=$((ramfs_size_mb*1024*1024/512))
ramdisk_device=$(hdid -nomount ram://${ramfs_size_sectors} | xargs)
USERRAMDISK="${mount_point}"

MSG_MOVE_CACHE=". Do you want me to move its cache? Note: It will close the app."
MSG_PROMPT_FOUND="I found "

#
# Checks for the user response.
#
user_response()
{
   echo -ne "$@" "[Y/n]  "
   read -r response

   case ${response} in
      [yY][eE][sS]|[yY]|"")
         true
         ;;
      [nN][oO]|[nN])
         false
         ;;
      *)
         user_response "$@"
         ;;
   esac
}

#
# Closes passed as arg app by name
#
close_app()
{
   osascript -e "quit app \"${1}\""
}

#
# Creates RAM Disk.
#
mk_ram_disk()
{
   # unmount if exists and mounts if doesn't
   umount -f "${mount_point}"
   newfs_hfs -v 'ramdisk' "${ramdisk_device}"
   mkdir -p "${mount_point}"
   mount -o noatime -t hfs "${ramdisk_device}" "${mount_point}"

   echo "created RAM disk."
   # Hide RAM disk - we don't really need it to be annoiyng in finder.
   # comment out should you need it.
   
   echo "RAM disk hidden"
}




# Checks that we have
# all required utils before proceeding
check_requirements()
{

   hash newfs_hfs 2>/dev/null || { echo >&2 "No newfs_hfs has been found.  Aborting."; exit 1; }
}

#
# Check existence of the string in a file.
#
check_string_in_file()
{
   if  grep "${1}" "${2}" == 0; then
      return 0;
   else
      return 1;
   fi
}




#
# Intellij Idea
#
move_idea_cache()
{
   if [ -d "/Applications/IntelliJ IDEA.app" ]; then
      if user_response "${MSG_PROMPT_FOUND}" 'IntelliJ IDEA'"${MSG_MOVE_CACHE}" ; then
         close_app "IntelliJ Idea"
         # make a backup of config - will need it when uninstalling
         cp -f /Applications/IntelliJ\ IDEA.app/Contents/bin/idea.properties /Applications/IntelliJ\ IDEA.app/Contents/bin/idea.properties.back
         # Idea will create those dirs
         echo "idea.system.path=${USERRAMDISK}/Idea" >> /Applications/IntelliJ\ IDEA.app/Contents/bin/idea.properties
         echo "idea.log.path=${USERRAMDISK}/Idea/logs" >> /Applications/IntelliJ\ IDEA.app/Contents/bin/idea.properties
         echo "Moved IntelliJ cache."
      fi
   fi
}



#
# Creates intelliJ intermediate output folder
# to be used by java/scala projects.
#
create_intermediate_folder_for_intellij_projects()
{
   [ -d /Volumes/ramdisk/"${USER}"/compileroutput ] || mkdir -p /Volumes/ramdisk/"${USER}"/compileroutput
}


# -----------------------------------------------------------------------------------
# The entry point
# -----------------------------------------------------------------------------------
main() {
   check_requirements
   # and create our RAM disk
   mk_ram_disk
   # move the caches
   move_idea_cache
   # create intermediate folder for intellij projects output
   create_intermediate_folder_for_intellij_projects
  
   echo "echo use \"${mount_point}/compileroutput\" for intelliJ project output directory."
   echo "All good - I have done my job. Your apps should fly."
}

main "$@"
# -----------------------------------------------------------------------------------