brew-bootstrap-jenv-java

#!/bin/bash
#:  `Usage: brew bootstrap-jenv-java` [--debug]
#:
#:  Installs Zulu JDK.
set -e

if [ "$1" = "--debug" ]; then
  shift
  PRINT_DEBUG="1"
  set -x
fi

warn() { echo "$@" >&2; }
abort() { EXPECTED_EXIT="1"; warn "$@"; exit 1; }

abort_for_sh() {
  abort 'Error: add `eval "$(jenv init -)"` to the end of your .bash_profile!'
}

abort_for_zsh() {
  abort 'Error: add `eval "$(jenv init -)"` to the end of your .zshrc!'
}

abort_for_fish() {
  abort 'Error: check the installation instructions at https://github.com/gcuisinier/jenv#gettings-started!'
}

abort_with_shell_setup_message() {
  case $(basename ${SHELL:-bash}) in
  sh|bash)
    abort_for_sh
    ;;
  zsh)
    abort_for_zsh
    ;;
  fish)
    abort_for_fish
    ;;
  # tcsh users are on their own
  *)
    abort 'Error: you must finish setting up jenv in your shell; check `jenv init` for instructions!'
  esac
}

abort_with_jenv_path_message() {
  abort "Error: the $(jenv root)/versions path does not exist. Please create it."
}

cleanup() {
  set +e
  if [ -n "$EXPECTED_EXIT" ]; then
    return
  fi
  warn "Error: $(basename $0) failed!"
  if [ -z "$PRINT_DEBUG" ]; then
    warn "For debugging output run:"
    warn "  $0 --debug"
    warn "If you're stuck: file an issue with debugging output at:"
    warn "  https://github.com/github/homebrew-bootstrap/issues/new"
  fi
}
trap "cleanup" EXIT

BASE_PATH="$(cd "$(dirname "${BASH_SOURCE[0]}")/.." && pwd)"

if ! which jenv &>/dev/null; then
  abort "Error: you need to 'brew install jenv'!"
fi

if ! [[ -d "$(jenv root)/versions" ]]; then
  abort_with_jenv_path_message
fi

if ! jenv version-name &>/dev/null; then
  if ! [[ -z "$JENV_VERSION" ]]; then
    JAVA_REQUESTED="$JENV_VERSION"
  else
    JAVA_REQUESTED="$(jenv local)"
  fi

  if ! [[ "$JAVA_REQUESTED" =~ "." ]]; then
    warn "Error: requested Java version, \"$JAVA_REQUESTED\", is invalid."
    warn "hint: Java versions must contain a period."
    abort "hint: For example, instead of \"11\", use \"11.0\"."
  fi

  # Prior to Java 9, the major version is the second token, e.g. 1.8.0
  # From Java 9 on, the major version is the first token, e.g. 9.0.0
  if [[ "$(echo $JAVA_REQUESTED | awk -F. '{ print $1 }')" -ge 9 ]]; then
    cask_version="$(echo $JAVA_REQUESTED | awk -F. '{ print $1 }')"
  else
    cask_version="$(echo $JAVA_REQUESTED | awk -F. '{ print $2 }')"
  fi

  cask_shortname="zulu${cask_version}"
  if ! [[ -f "$BASE_PATH/Casks/${cask_shortname}.rb" ]]; then
    warn "Error: couldn't find a definition for ${cask_shortname}."
    warn "hint: This script only supports Zulu JVMs."
    warn "hint: For versions before Java 9, use the 1.x format, i.e. 1.8 or 1.8.0.181"
    warn "hint: For versions 9 and up, the major version comes first, i.e. 11.0 or 11.0.1"
    warn "hint: If the requested JVM still can't be found, you may not have requested a supported version."
    abort "hint: Leave off the leading \"openjdk-\" or \"openjdk64-\"."
  fi

  cask_name="github/bootstrap/${cask_shortname}"
  brew bundle --file=- <<-EOS
tap "github/bootstrap"
cask "$cask_name"
EOS

  java_home=$(/usr/libexec/java_home -v $JAVA_REQUESTED)
  yes | jenv add $java_home
fi

if [ "$(jenv exec java -version 2>&1)" != "$(java -version 2>&1)" ]; then
  abort_with_shell_setup_message
fi

EXPECTED_EXIT="1"
exit 0