play version manager based on svm(https://github.com/yuroyoro/svm)

playvm

#!/usr/bin/env bash

# Copyright (c) 2011 Tomohito Ozaki(yuroyoro)
#               2014 Ken Kaizu(krrrr38)
# All rights reserved.
#
# Redistribution and use in source and binary forms, with or without
# modification, are permitted provided that the following conditions
# are met:
#
#  1. Redistributions of source code must retain the above copyright
#     notice, this list of conditions and the following disclaimer.
#  2. Redistributions in binary form must reproduce the above copyright
#     notice, this list of conditions and the following disclaimer in
#     the documentation and/or other materials provided with the
#     distribution.
#  3. The name of the author may not be used to endorse or promote
#     products derived from this software without specific prior
#     written permission.
#
# THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS
# OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
# WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
# ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY
# DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
# DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE
# GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
# INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER
# IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR
# OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN
# IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.

NEXT_VERSION="2.2.2"
AVAILABLE_VERSIONS=`cat <<EOS
1.0
1.0.1
1.0.2
1.0.2.1
1.0.3
1.0.3.1
1.0.3.2
1.0.3.3
1.0.3.4
1.1
1.1.1
1.1.2
1.1.3
1.2
1.2.1
1.2.2
1.2.3
1.2.4
1.2.5
1.2.5.1
1.2.5.2
1.2.5.3
1.2.6
1.2.7
2.0
2.0.1
2.0.2
2.0.3
2.0.4
2.0.5
2.0.6
2.0.7
2.0.8
2.1.0
2.1.1
2.1.2
2.1.3
2.1.4
2.1.5
2.2.0
2.2.1
2.2.2
EOS`

BASE_DIR="${PLAY_INSTALLED_DIR}"
if [ -z "${BASE_DIR}" ] ; then
  BASE_DIR="${HOME}/.playvm"
fi

if [ ! -d "${BASE_DIR}" ] ; then
  mkdir -p "${BASE_DIR}"
fi

path_included=0

path=$PATH:
while [ $path ]
do
  p=${path%%:*}
  if [ "${BASE_DIR}/current/rt" = "${p}" ] ; then
    path_included=1
  fi
  path=${path#*:}
done

if [ $path_included -eq 0 ] ; then
  echo "warning: You don't have ${BASE_DIR}/current/rt in your PATH."
fi

usage() {
  cat << EOS

Usage :
  playvm [Action] [Play-Version] [Options]

Action :
  -h|help             - show this usage information
  -c|current          - show the currently use play version
  -l|list             - show the play version installed in playvm_path(default is $HOME/.playvm)
  -v|versions         - show the abalabe play version not installed
  -i|install          - install specific play version
  -r|remove|uninstall - uninstall specific play version and remove their sources
  -s|switch|-u|use    - setup to use a specific play version
  (any strings)       - setup to use specific play version(shortcut of playvm switch)

EOS
}

yes_no() {
  MSG=$1
  while :
  do
    echo -n "${MSG} y/N: "
    read ans
    case $ans in
      [yY]|[yY][eE][sS]) return 0 ;;
      [nN]|[nN][oO]) return 1 ;;
    esac
  done
}

list(){
  case "`uname`" in
    Darwin*)   find ${BASE_DIR} -maxdepth 1 -d -print0 | xargs -0 basename | grep 'play-' | sed 's/play-//' ;;
    *)         find ${BASE_DIR} -maxdepth 1 -depth -printf "%f\n" | grep 'play-' | sed 's/play-//' ;;
  esac
}

versions(){
  case "`uname`" in
    Darwin*)   installed_versions=`find ${BASE_DIR} -maxdepth 1 -d -print0 | xargs -0 basename | grep 'play' | sed 's/play-//'` ;;
    *)         installed_versions=`find ${BASE_DIR} -maxdepth 1 -depth -printf "%f\n" | grep 'play' | sed 's/play-//'` ;;
  esac

  for v in ${AVAILABLE_VERSIONS}
  do
    for i in ${installed_versions}
    do
      if [ "${v}" = "${i}" ] ; then
        installed=1
      fi
    done
    if [ -z "${installed}" ] ;then
      echo "${v}"
    fi
    unset installed
  done
  cat << EOS
more previous releases
see http://www.playframework-ja.org/download

EOS
}

download(){
  url="$1"
  echo "Downloading $url"
  if which wget > /dev/null 2>&1; then
    wget "$url"
  elif which curl > /dev/null 2>&1; then
    curl -O -L "$url"
  else
    echo >&2 "wget or curl is required"
    return 1
  fi
  if [ $? -ne 0 ]; then
    echo >&2 "Failed to download $url"
    return 1
  fi
}

install(){
  version=$1
  echo "Trying to installing version of ${version}."
  dist_url="http://downloads.typesafe.com/play"
  version_dir="${BASE_DIR}/play-${version}"
  if [ -d "${version_dir}" ]
  then
    echo "${version_dir} is already exisits."
    yes_no "Do you want to replace this version?"
    if [ $? -ne 0 ]; then
      rm -rf "${version_dir}"
    else
      return 0;
    fi
  fi

  mkdir -p "${version_dir}"
  cd "${version_dir}"
  echo "in ${version_dir}"

  download "${dist_url}/${version}/play-${version}.zip"
  if [ $? -ne 0 ]; then
    cd "${PWD}"
    rm -rf "${version_dir}"
    return 1;
  fi

  unzip play-${version}.zip
  mv play-${version} rt
  rm play-${version}.zip

  cd "${PWD}"
  echo "Successfully installed version of ${version}."
  echo "installed directory is ${version_dir}"

  return 0;
}

uninstall(){
  version=$1
  version_dir="${BASE_DIR}/play-${version}"
  get_current current_ver

  if [ "${version}" = "${current_ver}" ] ; then
    yes_no "Do you want to remove currently version [${version}] ?"
    if [ $? -ne 0 ]; then
      return 0;
    else
      read_next_version next_version
    fi
  fi


  rm -rf "${version_dir}"
  echo -n "removed version ${version}"

  if [ ! -z "${next_version}" ];then
    switch "${next_version}"
  fi
  echo "Successfully uninstalled version of ${version}"

}

read_next_version(){
  list
  get_stable stable
  echo ""
  echo -n "Please input currently set version.[${stable}]"
  read next_version
  if [ -z "${next_version}" ];then
    next_version="${stable}"
  fi
  eval $1="${next_version}"
  return 0;
}

confirm_switch(){
  version=$1
  yes_no "Do you want to change current runtime version to ${version}?"
  if [ $? -eq 0 ]; then
    switch "${version}"
    return 0;
  fi
  return 1;
}

switch(){
  version=$1
  if [ -z "${version}" ] ; then
    read_next_version version
  fi

  get_current current_ver

  if [ "${version}" = "${current_ver}" ] ; then
    echo "Nothing to do..."
    return 0;
  fi

  version_dir="${BASE_DIR}/play-${version}"
  if [ ! -d "${version_dir}" ] ; then
    echo "Version ${version} is not installed."
    yes_no "Do you want to try to install version of ${version}?"
    if [ $? -eq 0 ]; then
      install "${version}"
      if [ $? -ne 0 ]; then
        return 1;
      fi
    else
      return 0;
    fi
  fi

  if [ -h "${BASE_DIR}/current" ] ; then
    rm "${BASE_DIR}/current"
  fi
  ln -fs "play-${version}" "${BASE_DIR}/current"
  echo "currently version is $1"
}

current(){
  get_current currnet_version
  echo "currently version is ${currnet_version}"
}

get_current(){
  currnet_version=`readlink "${BASE_DIR}/current" | sed 's/play-//'`
  eval $1="${currnet_version}"
  return 0;
}


cmd="$1"

if [ -z "${cmd}" ] ; then
  current
else
  case "$cmd" in
    -h|help)             usage ;;
    -c|current)          current ;;
    -l|list)             list
                         current
                         ;;
    -v|versions)         versions ;;
    -i|install)          install $2
                         if [ $? -eq 0 ]; then
                           confirm_switch $2
                         fi
                         ;;
    -r|remove|uninstall) uninstall $2 ;;
    -s|-u|switch|use)    switch $2 ;;
    * )                  switch "${cmd}" ;;
  esac
fi