asdf automatic patch updates

.bash_profile

# asdf does not have brew-like update functionality and "latest" cannot be used in a .tool-versions file
# making keeping up with new semantic versions a manual and laborious process

# This shell profile function automates this away and will patch update all local .tool-versions packages
# it could be refactored to apply globally or use flags to apply to a selected location

asdf_patch () {
  if [ -f ./.tool-versions ]; then

    # ensure .tool-versions has a closing newline or bash will skip the last app
    if [ ! "$(cat .tool-versions | tail -c 1)" = "" ]; then echo "" >> .tool-versions; fi

    while read -r LINE;
    do
      APP=$(echo ${LINE} | cut -d ' ' -f 1)
      MINOR_VERSION=$(echo ${LINE} | cut -d ' ' -f 2 | cut -d '.' -f 1-2)

      # Install the latest patch version for the project minor versions
      asdf install ${APP} latest:${MINOR_VERSION}

      # update the local .tool-versions file to use the patch versions
      # they have to be installed before "latest" can be applied to a file
      asdf local ${APP} latest:${MINOR_VERSION}
    done < .tool-versions
  else
    echo "No .tool-versions available to update"
  fi
}