rvm_installer

rvm_installer.sh

#!/usr/bin/env bash

shopt -s extglob
PS4="+ \${BASH_SOURCE##\${rvm_path:-}} : \${FUNCNAME[0]:+\${FUNCNAME[0]}()}  \${LINENO} > "
export PS4
set -o errtrace
set -o errexit

log()  { printf "%b\n" "$*" ; return $? ;  }

fail() { log "\nERROR: $*\n" ; exit 1 ; }

if [[ -z "${rvm_tar_command:-}" ]] && builtin command -v gtar >/dev/null
then
  rvm_tar_command=gtar
else
  rvm_tar_command=tar
fi
if [[ ! " ${rvm_tar_options:-} " =~ " --no-same-owner "  ]] && \
  $rvm_tar_command --help | \grep -- --no-same-owner >/dev/null
then
  rvm_tar_options="${rvm_tar_options:-} --no-same-owner"
  rvm_tar_options="${rvm_tar_options## }"
fi

usage()
{
  printf "%b" "

Usage

  rvm-installer [options] [action]

Options

  [[--]version] <latest|latest-x|latest-x.y|x.y.z> - Install RVM version
  [--]branch    <name> - Install RVM head, from named branch
  --trace              - used to debug the installer script

Actions

  master - Install RVM master branch from wayneeseguin rvm repo (Default).
  stable - Install RVM stable branch from wayneeseguin rvm repo.
  help   - Display CLI help (this output)

Branches:

  branch <branch>
  branch /<branch>
  branch <repo>/
  branch <repo>/<branch>

  Defaults:

    branch: master
    repo:   wayneeseguin

"
}

#Searches for highest available version for the given pattern
# fetch_version 1.10. -> 1.10.3
# fetch_version 1. -> 1.11.0
# fetch_version "" -> 2.0.1
fetch_version()
{
  curl -s https://api.github.com/repos/wayneeseguin/rvm/tags |
    sed -n '/"name": / {s/^.*".*": "\(.*\)".*$/\1/; p;}' |
    sort -t. -k 1,1n -k 2,2n -k 3,3n -k 4,4n -k 5,5n |
    grep "^${1:-}" | tail -n 1
}

install_release()
{
  typeset _version
  _version=$1
  log "Downloading RVM version ${_version}"
  get_and_unpack \
    https://github.com/wayneeseguin/rvm/tarball/${_version} \
    rvm-${_version}.tar.gz \
    wayneeseguin-rvm-
}

install_head()
{
  typeset _repo _branch
  case "$1" in
    (/*)
      _repo=wayneeseguin
      _branch=${1#/}
      ;;
    (*/)
      _repo=${1%/}
      _branch=master
      ;;
    (*/*)
      _repo=${1%/*}
      _branch=${1#*/}
      ;;
    (*)
      _repo=wayneeseguin
      _branch=$1
      ;;
  esac
  log "Downloading RVM from ${_repo} branch ${_branch}"
  get_and_unpack \
    https://github.com/${_repo}/rvm/tarball/${_branch} \
    ${_repo}-rvm-${_branch}.tgz \
    ${_repo}-rvm-
}

get_and_unpack()
{
  typeset _url _file _patern
  _url=$1
  _file=$2
  _patern=$3

  if curl -L ${_url} -o ${rvm_archives_path}/${_file}
  then
    true
  else
    typeset ret=$?
    case $ret in
      (60)
        log "
Could not download '${_url}'.
  Make sure your certificates are up to date as described above.
  To continue in insecure mode run 'echo insecure >> ~/.curlrc'.
"
        return 60
        ;;
      (*)
        log "
Could not download '${_url}'.
  curl returned status '$ret'.
"
        return 1
        ;;
    esac
  fi

  [[ -d "${rvm_src_path}/rvm" ]] || \mkdir -p "${rvm_src_path}/rvm"
  if ! builtin cd "${rvm_src_path}/rvm"
  then
    log "Could not change directory '${rvm_src_path}/rvm'."
    return 2
  fi

  rm -rf ${rvm_src_path}/rvm/*
  if ! $rvm_tar_command xzf ${rvm_archives_path}/${_file} ${rvm_tar_options:-}
  then
    log "Could not extract RVM sources."
    return 3
  fi

  if ! mv ${_patern}*/* .
  then
    log "Could not move RVM sources path."
    return 4
  fi
  rm -rf ${_patern}*
}

# Tracing, if asked for.
if [[ "$*" =~ --trace ]] || (( ${rvm_trace_flag:-0} > 0 ))
then
  set -o xtrace
  export rvm_trace_flag=1
fi

# Variable initialization, remove trailing slashes if they exist on HOME
true \
  ${rvm_trace_flag:=0} ${rvm_debug_flag:=0} ${rvm_user_install_flag:=0}\
  ${rvm_ignore_rvmrc:=0} HOME="${HOME%%+(\/)}"


if (( rvm_ignore_rvmrc == 0 ))
then
  for rvmrc in /etc/rvmrc "$HOME/.rvmrc"
  do
    if [[ -s "$rvmrc" ]]
    then
      if \grep '^\s*rvm .*$' "$rvmrc" >/dev/null 2>&1
      then
        printf "%b" "
Error: $rvmrc is for rvm settings only.
rvm CLI may NOT be called from within $rvmrc.
Skipping the loading of $rvmrc
"
        return 1
      else
        source "$rvmrc"
      fi
    fi
  done
fi

if [[ -z "${rvm_path:-}" ]]
then
    rvm_path="${HOME}/.rvm"
fi
export HOME rvm_path

install_rubies=()
install_gems=()
# Parse CLI arguments.
while (( $# > 0 ))
do
  token="$1"
  shift
  case "$token" in

    --trace)
      set -o xtrace
      export rvm_trace_flag=1
      ;;

    --path)
      if [[ -n "${1:-}" ]]
      then
        rvm_path="$1"
        shift
      else
        fail "--path must be followed by a path."
      fi
      ;;

    --branch|branch) # Install RVM from a given branch
      if [[ -n "${1:-}" ]]
      then
        version="head"
        branch="$1"
        shift
      else
        fail "--branch must be followed by a branchname."
      fi
      ;;

    --user-install|--auto)
      token=${token#--}
      token=${token//-/_}
      export "rvm_${token}_flag"=1
      printf "%b" "Turning on ${token/_/ } mode.\n"
      ;;

    --version|version)
      version="$1"
      shift
      ;;

    head)
      version="head"
      branch="master"
      ;;

    stable|master)
      version="head"
      branch="$token"
      ;;

    latest|latest-*|+([[:digit:]]).+([[:digit:]]).+([[:digit:]]))
      version="$token"
      ;;

    --ruby)
      install_rubies+=( ruby )
      ;;

    --ruby=*)
      install_rubies+=( ${token//,/ } )
      ;;

    --rails)
      install_gems+=( rails )
      ;;

    --gems=*)
      install_gems+=( ${token//,/ } )
      ;;

    help|usage)
      usage
      exit 0
      ;;
  *)
    usage
    exit 1
    ;;

  esac
done

if (( ${#install_gems[@]} > 0 && ${#install_rubies[@]} == 0 ))
then
  install_rubies=( ruby )
fi

if (( ${#install_rubies[@]} > 0 ))
then
  echo "Please read and follow further instructions."
  echo "Press ENTER to continue."
  builtin read -n 1 -s -r anykey
fi

true "${version:=head}"

if [[ "$rvm_path" != /* ]]
then
  fail "The rvm install path must be fully qualified. Tried $rvm_path"
fi

rvm_src_path="$rvm_path/src"
rvm_archives_path="$rvm_path/archives"
rvm_releases_url="https://rvm.io/releases"

for dir in "$rvm_src_path" "$rvm_archives_path"
do
  if [[ ! -d "$dir" ]]
  then
    mkdir -p "$dir"
  fi
done

# Perform the actual installation, first we obtain the source using whichever
# means was specified, if any. Defaults to head.
case "${version}" in
  (head)
    echo "${branch}" > "$rvm_path/RELEASE"
    install_head ${branch:-master} || exit $?
    ;;

  (latest)
    echo "${version}" > "$rvm_path/RELEASE"
    install_release $(fetch_version "") || exit $?
    ;;

  (latest-*)
    echo "${version}" > "$rvm_path/RELEASE"
    install_release $(fetch_version "${version#latest-}") || exit $?
    ;;

  (+([[:digit:]]).+([[:digit:]]).+([[:digit:]])) # x.y.z
    echo "version" > "$rvm_path/RELEASE"
    install_release ${version} || exit $?
    ;;

  (*)
    fail "Something went wrong, unrecognized version '$version'"
    ;;
esac

# No matter which one we are doing we install the same way, using the RVM installer script.
flags=()
if (( rvm_trace_flag == 1 ))
then flags+=("--trace")
fi

if (( rvm_debug_flag == 1 ))
then flags+=("--debug")
fi

if (( rvm_auto_flag == 1 ))
then flags+=("--auto")
fi

chmod +x ./scripts/install
./scripts/install ${flags[*]} --path "$rvm_path"

(
  source ${rvm_scripts_path:-${rvm_path}/scripts}/rvm
  source ${rvm_scripts_path:-${rvm_path}/scripts}/version
  __rvm_version

  if (( ${#install_rubies[@]} > 0 ))
  then
    {
      echo "Ruby (and gems) of your selection will be installed shortly,"
      echo "before it happens please read and execute the bellow instruction."
      echo "Please use separate terminal to execute any additional commands."
      rvm requirements
      echo "Press 'q' to continue."
    } | less
  fi

  for _ruby in ${install_rubies[@]}
  do
    rvm install ${_ruby} -j 2
  done
  for _ruby in ${install_rubies[@]}
  do
    # set the first one as default, skip rest
    rvm alias create default ${_ruby}
    break
  done

  for _gem in ${install_gems[@]}
  do
    rvm all do gem install ${_gem}
  done

  if (( ${#install_rubies[@]} > 0 ))
  then
    printf "%b" "
  * To start using RVM you need to run \`source $rvm_path/scripts/rvm\`
    in all your open shell windows, in rare cases you need to reopen all shell windows.
"
  fi

  if [[ "${install_gems[*]}" =~ "rails" ]]
  then
    printf "%b" "
  * To start using rails you need to run \`rails new <project_dir>\`.
"
  fi
)