#!/bin/bash

function __rvm_info {
cat <<Info

system:
  uname: "$(uname -a)"

ruby:
  interpreter:  "`ruby -v | awk '{print $1}'`"
  version:      "`ruby -v | awk '{print $2}'`"
  date:         "`ruby -v | sed 's/^.*(\([0-9]\{4\}\(-[0-9][0-9]\)\{2\}\).*$/\1/'`"
  platform:     "`ruby -v | sed 's/^.*\[//' | sed 's/\].*$//'`"
  patchlevel:   "`ruby -v | sed 's/^.*(//' | sed 's/).*$//'`"
  full_version: "`ruby -v`"

homes:
  gem:          "${GEM_HOME:-'not set'}"
  ruby:         "${MY_RUBY_HOME:-'not set'}"

binaries:
  ruby:         "`which ruby`"
  irb:          "`which irb`"
  gem:          "`which gem`"
  rake:         "`which rake`"

environment:
  GEM_HOME:     "$GEM_HOME"
  MY_RUBY_HOME: "$MY_RUBY_HOME"
  IRBRC:        "$IRBRC"
Info
}

function __rvm_debug {
  __rvm_log "debug" "\nPATH:\n$(echo $PATH | awk -F":" '{print $1":"$2":"$3":"$4":"$5}')"

  for file_name in ~/.bash_profile ~/.bashrc ~/.zshrc ; do
    if [ -s $file_name ] ; then
      __rvm_log "debug" "\n$file_name:\n$(grep 'rvm' $file_name)"
    fi
  done

  for file_name in $rvm_path/default $rvm_path/system $rvm_path/config/db ~/.rvmrc ~/.gemrc; do
    if [ -f $file_name -a -s $file_name ] ; then
      __rvm_log "debug" "$file_name (filtered):\n$(cat $file_name | awk '!/assword|_key/')\n"
    fi
  done

  if [ -f $rvm_path/bin/rvm ] ; then
    __rvm_log "error" "rvm script in bin! \n$(ls -laht $rvm_path/bin/rvm)"
  fi
}

# Logging functions based on level
function __rvm_log {
  case "$1" in
    debug) shift ;
      if [ ! -z "$rvm_debug_flag" ] ; then
        echo -e "\033[0;35m<debug>\033[0m $* \033[0;35m</debug> \033[0m "
      fi
    ;;
    info)  shift ; echo -e "\033[0;32m<info>\033[0m $* \033[0;32m</info> \033[0m " ;;
    warn)  shift ; echo -e "\033[0;33m<warning>\033[0m $* \033[0;33m</warning> \033[0m " ;;
    error) shift ; echo -e "\033[0;31m<error>\033[0m $* \033[0;31m</error> \033[0m " ;;
    fail)  shift ; echo -e "\033[0;31m<fail>\033[0m $* \033[0;31m</fail> \033[0m " ; __rvm_pushpop ; return 1 ;;
    *) echo -e "$*"
  esac
}

function __rvm_clean-path {
  PATH=`echo $PATH | tr -s ':' '\n' | awk '!($0 in a){a[$0];print}' | tr -s '\n' ':' | sed 's/:$//'`
  export PATH
}

function __rvm_remove-rvm-from-path {
  PATH=`echo $PATH | tr -s ':' '\n' | grep -v "\.rvm" | tr -s '\n' ':' | sed 's/:$//'`
  export PATH
}

function __rvm_gi { gem install -q --no-rdoc --no-ri $* ; }

function __rvm_run {
  log_file_name="$1" ; shift
  command="$*"
  rvm_ruby_log_path=${rvm_ruby_log_path:-$rvm_path/log}
  mkdir -p $rvm_ruby_log_path
  __rvm_log "debug" "Executing: $command"
  touch $rvm_ruby_log_path/$log_file_name.log $rvm_ruby_log_path/$log_file_name.error.log # for zsh :(
  echo "[$(date +'%Y-%m-%d %H:%M:%S')] $command" | tee $rvm_ruby_log_path/$log_file_name.log > $rvm_ruby_log_path/$log_file_name.error.log
  if [ -z "$rvm_niceness" -o "$rvm_niceness" = "0" ] ; then
    eval "$command" >> $rvm_ruby_log_path/$log_file_name.log 2>> $rvm_ruby_log_path/$log_file_name.error.log
  else
    eval "nice -n $rvm_niceness \`$command\`" >> $rvm_ruby_log_path/$log_file_name.log 2>> $rvm_ruby_log_path/$log_file_name.error.log
  fi
  if [ $? -gt 0 ] ; then __rvm_log "error" "Error running '$command', please check $rvm_ruby_log_path/$log_file_name.error.log" ; __rvm_pushpop ; return 1 ; fi
  unset log_file command
}

function __rvm_cleanup_variables {
  unset rvm_selected rvm_action rvm_ruby_interpreter rvm_ruby_patch_level rvm_ruby_version rvm_irbrc_file rvm_ruby_irbrc rvm_source_path rvm_path rvm_prefix_path rvm_ruby_package_name rvm_gem_path rvm_command rvm_error_message rvm_ruby_home rvm_ruby_binary rvm_gem_set_name rvm_ruby_tag rvm_ruby_rev rvm_url rvm_ruby_make rvm_ruby_configure rvm_ruby_make_install rvm_config_path rvm_ruby_string rvm_bin_path rvm_force_flag rvm_all_flag rvm_reconfigure_flag rvm_make_flags rvm_bin_flag rvm_load_flag rvm_dump_flag rvm_self_flag rvm_gem_flag rvm_rubygems_flag rvm_debug_flag rvm_delete_flag rvm_summary_flag rvm_test_flag _rvm_spec_flag rvm_json_flag rvm_yaml_flag rvm_ruby_string rvm_ruby_selector rvm_shebang_flag rvm_env_flag rvm_head_flag rvm_tail_flag
}

function __rvm_unset_ruby_variables {
  unset rvm_ruby_interpreter rvm_ruby_version rvm_ruby_repo_url rvm_ruby_package_name rvm_ruby_patch_level rvm_ruby_configure rvm_ruby_make rvm_ruby_make_install rvm_ruby_rev rvm_ruby_tag rvm_major_version rvm_minor_version rvm_gem_set_name rvm_gem_home rvm_ruby_binary rvm_ruby_package_name rvm_ruby_home rvm_ruby_log_path rvm_ruby_src_path rvm_ruby_irbrc rvm_selected rvm_ruby_selector rvm_ruby_string
}

# TODO: root user loadng of /etc/rvmrc
function __rvm_load-rvmrc {
  if [ -s ~/.rvmrc ] ; then source ~/.rvmrc ; fi
}

function __rvm_bin_scripts {
  for rvm_ruby_binary in `/bin/ls $rvm_path/*/bin/ruby 2> /dev/null` ; do
    if [ -x $rvm_ruby_binary ] ; then
      rvm_ruby_string=`dirname $rvm_ruby_binary | xargs dirname | xargs basename`
      __rvm_select
      __rvm_bin_script
    fi
  done
}

function __rvm_bin_script {
  if [ -z "$rvm_selected" ] ; then __rvm_select $* ; fi
ruby_wrapper=$(cat <<RubyWrapper
#!/bin/bash

GEM_HOME=$rvm_gem_home ; export GEM_HOME
GEM_PATH=$rvm_gem_home ; export GEM_PATH
MY_RUBY_HOME=$rvm_ruby_home ; export MY_RUBY_HOME
PATH=$rvm_ruby_home/bin:$rvm_gem_home/bin:\$PATH ; export PATH

exec "$rvm_ruby_binary" "\$@"
RubyWrapper
)
  rm -f $rvm_path/bin/$rvm_ruby_package_name
  echo "$ruby_wrapper" > $rvm_path/bin/$rvm_ruby_package_name
  unset ruby_wrapper
  chmod +x $rvm_path/bin/$rvm_ruby_package_name
}

function __rvm_fetch {
  __rvm_pushpop $rvm_archives_path
  archive=`basename "$1"`
  __rvm_log "debug" "Fetching $archive"
  # Check first if we have the correct archive
  if [ -e $archive ] && [ -e $archive.md5 ] ; then
    __rvm_log "debug" "Found archive and its md5, testing correctness"
    if [ `md5sum --status -c $archive.md5` -gt 0 ] ; then
      __rvm_log "debug" "Archive is bad, downloading"
      download=1
    else
      __rvm_log "debug" "Archive is good, not downloading"
      download=0
      result=0
    fi
  else
    __rvm_log "debug" "No archive or no MD5, downloading"
    download=1
  fi
  if [ $download -gt 0 ] ; then
    eval $rvm_fetch "$1"
    result=$?
    if [ $result -gt 0 ] ; then
      if [ $result -eq 78 ] ; then
        __rvm_log "error" "The requested url does not exist: '$1'"
      elif [ $result -eq 33 ] ; then
        __rvm_log "debug" "Server does not support 'range' command, removing '$archive'"
        rm -f $archive
        __rvm_fetch "$1"
      else
        __rvm_log "error" "There was an error, please check $rvm_ruby_log_path/*.error.log"
      fi
    fi
    __rvm_pushpop
  fi
  unset archive
  unset download
  return $result
}

function __rvm_load_defaults {
  if [ ! -s $rvm_path/system ] ; then
    for variable in RUBY_VERSION GEM_HOME GEM_PATH MY_RUBY_HOME ; do
      eval value=\$${variable}
      if [ -z "$value" ] ; then
        echo "unset ${variable}" >> $rvm_path/system
      else
        eval "export $variable"
        eval value=\$${variable}
        echo "${variable}='$value' ; export ${variable}" >> $rvm_path/system
      fi
    done
  fi

  rvm_system_ps1=`__rvm_db "system_ps1"`
  if [ -z "$rvm_system_ps1" ] ; then
    rvm_system_ps1=$PS1
    __rvm_db "system_ps1" "$rvm_system_ps1"
  fi

  rvm_system_ruby=`__rvm_db "system_ruby"`
  if [ ! -z "$rvm_system_ruby" ] ; then
    rvm_system_ruby=`which ruby`
    if [ $? -ne 0 ] ; then
      __rvm_log "info" "System ruby not found, no db will be stored."
    else
      __rvm_db "system_ruby" "$rvm_system_ruby"

      # Now store system system & user gem paths
      rvm_system_user_gem_path=`__rvm_db "system_user_gem_path"`
      if [ -z "$rvm_system_user_gem_path" ] ; then
        rvm_system_user_gem_path=$( rvm system ; gem env gemdir user; )
        __rvm_db "system_user_gem_path" "$rvm_system_user_gem_path"
      fi
      rvm_system_gem_path=`__rvm_db "system_gem_path"`
      if [ -z "$rvm_system_gem_path" ] ; then
        rvm_system_gem_path=$( rvm system ; gem env gemdir; )
        __rvm_db "system_gem_path" "$rvm_system_gem_path"
      fi
    fi
  fi
}

function __rvm_reset {
  PATH=$(echo $PATH | tr ':' '\n' | awk '$0 !~ /rvm/' | paste -sd : -)
  PATH=$rvm_bin_path:$PATH ; export PATH

  for variable in RUBY_VERSION GEM_HOME MY_RUBY_HOME ; do unset $variable ; done

  for file in system default ; do
    if [ -f $rvm_path/$file ] ; then rm -f $rvm_path/$file ; fi
  done
  rvm_ruby_interpreter="system"
  __rvm_select

  for system_config in system_ps1 system_ruby system_gem_path system_user_gem_path ; do
    __rvm_db "$system_config" "delete"
  done ; unset system_config variable

  rm -f $rvm_path/bin/ruby $rvm_path/bin/gem $rvm_path/bin/rake $rvm_path/bin/irb $rvm_path/bin/default*
}

function __rvm_implode {
  while : ; do
    __rvm_log "warn" "Are you SURE you wish for rvm to implode? This will remove $rvm_path ? (type 'yes' or 'no')"
    read response
    if [ "$response" = "yes" ] ; then
      if [ "$rvm_path" = "/" ] ; then
        __rvm_log "error" "remove '/' ?!... NO!"
      else
        if [ -d $rvm_path ] ; then
          __rvm_log "info" "Hai! Removing $rvm_path"
          rm -rf $rvm_path/
          __rvm_log "info" "$rvm_path has been removed."
        else
          __rvm_log "info" "It appears that $rvm_path is already non existant."
        fi
      fi
      break
    elif [ "$response" = "no" ] ; then
      __rvm_log "info" "Cancelling implosion, no harm done :)"
      break
    fi
  done
}

function __rvm_gemdir {
  if [ -z "$rvm_selected" ] ; then __rvm_select $* ; fi
  mkdir -p $rvm_gem_home
  echo $rvm_gem_home
}

function __rvm_source_dir {
  if [ -z "$rvm_selected" ] ; then __rvm_select $* ; fi
  if [ -z "$rvm_ruby_src_path" ] ; then
    __rvm_log "fail" "No source directory exists for the default implementation."
  else
    echo "$rvm_ruby_src_path"
  fi
}

# clones from source implementation/version to default
# TODO: Merge this into 'rvm sync'
function __rvm_gemdup {
  if [ -z "$rvm_selected" ] ; then __rvm_select $* ; fi
  __rvm_log "debug" "$rvm_ruby_interpreter"
  if [ "$rvm_ruby_interpreter" = "default" ] ; then
    # TODO: ~/.rvm/default first, then system user
    rvm_source_gem_path="$rvm_system_user_gem_path"
  elif [ "$rvm_ruby_interpreter" = "user" ] ; then
    rvm_source_gem_path="$rvm_system_user_gem_path"
  elif [ "$rvm_ruby_interpreter" = "system" ] ; then
    rvm_source_gem_path="$rvm_system_gem_path"
  else
    # TODO: use selector for this?
    rvm_source_gem_path=${rvm_gem_home/$rvm_ruby_interpreter/$rvm_ruby_version}
  fi
  __rvm_gem_sync
}

function __rvm_gem_sync {
  if [ ! -z "$rvm_source_gem_path" ] ; then
    for rvm_gem_name_version in `/bin/ls $rvm_source_gem_path/gems 2> /dev/null` ; do
      rvm_gem_name=${rvm_gem_name_version%-*}
      rvm_gem_version=${rvm_gem_name_version##*-}
      if [ -d $GEM_HOME/gems/$rvm_gem_name_version ] ; then
        echo "$rvm_gem_name_version already installed."
      else
        __rvm_gi $rvm_source_gem_path/cache/$rvm_gem_name-$rvm_gem_version.gem
      fi
    done
    unset rvm_gem_name_version rvm_gem_name rvm_gem_version
  else
    __rvm_log "fail" "Unknown ruby selected :("
    result=1
  fi
}

function __rvm_db {
  rvm_hash_file="$rvm_config_path/db"
  touch $rvm_hash_file
  key="$1" ; shift

  if [ -z "$key" ] ; then
    __rvm_log "fail" "__rvm_db must be called with at least one argument: __rvm_db key [value]"
  else
    value="$*"
    if [ "$value" = "unset" -o "$value" = "delete" ] ; then
      sed -i.tmp "s/^$key=.*$//" $rvm_hash_file
    else
      if [ -z "$value" ] ; then # get
        grep "^$key=" $rvm_hash_file | head -n 1 | awk -F'=' '{print $2}'
      else # set
        if [ -z "$(grep "^$key=" $rvm_hash_file)" ] ; then # append
          echo "$key=$value" >> $rvm_hash_file
        else # overwrite
          sed -i.tmp "s/^$key=.*$/$key=$value/" $rvm_hash_file
        fi
      fi
    fi
  fi
}

function __rvm_list {
  if [ "$rvm_all_flag" ] ; then
    svn list http://svn.ruby-lang.org/repos/ruby/tags/ | grep 'v1_[8|9]' | sed 's/^v1_//' | sed 's/\/$//' | awk -F'_' '{print "1."$1"."$2 " -l "$3}' | sed 's/p$//'
    echo -e "jruby 1.2.0\njruby 1.3.0\njruby 1.3.1\njruby --head"
    echo -e "rbx head (rubinius head)\nrbx head --jit"
    echo -e "ree 20090610\nree --head\nree 1.8.7 --head"
  else
    current_ruby=`which ruby | xargs dirname | xargs dirname | xargs basename 2> /dev/null`
    echo -e "\nruby:\n"
    for version in `/bin/ls -l $rvm_path/ 2> /dev/null | awk '/ ruby-[1-2].*/ { print $NF  }'` ; do
      string=`$rvm_path/$version/bin/ruby -v`
      if [ "$current_ruby" = "$version" ] ; then
        echo -e "=> $version : $string"
        selected="1"
      else
        echo -e "   $version : $string"
      fi
    done ; unset version

    echo -e "\njruby:\n"
    for version in `/bin/ls -l $rvm_path/ 2> /dev/null | awk '/jruby-.*/ { print $NF }'` ; do
      string=`$rvm_path/$version/bin/ruby -v`
      if [ "$current_ruby" = "$version" ] ; then
        echo -e "=> $version : $string"
        selected="1"
      else
        echo -e "   $version : $string"
      fi
    done ; unset version

    echo -e "\nree:\n"
    for version in `/bin/ls $rvm_path/ 2> /dev/null | awk '/ruby-enterprise-.*/ { print $NF }'` ; do
      string=`$rvm_path/$version/bin/ruby -v | tr "\n" ' ' `
      if [ "$current_ruby" = "$version" ] ; then
        echo -e "=> $version : $string"
        selected="1"
      else
        echo -e "   $version : $string"
      fi
    done ; unset version

    if [ -f $rvm_path/default -a -s $rvm_path/default ] ; then
      version=`grep '^MY_RUBY_HOME' ~/.rvm/default | awk -F"'" '{print $2}' | xargs basename`
      if [ ! -z "$version" ] ; then
        echo -e "\ndefault:\n"
        string=`$rvm_path/$version/bin/ruby -v`
        if [ "$current_ruby" = "$version" ] ; then
          echo -e "=> $version : $string"
          selected="1"
        else
          echo -e "   $version : $string"
        fi
      fi ; unset version
    fi

    echo -e "\nsystem:\n"
    system_version=`rvm system ; ruby -v 2> /dev/null`
    if [ ! -z "$system_version" ] ; then
      if [ "$(`which ruby` -v)" = "$system_version" ] ; then
        echo -e "=> $system_version\n"
      else
        echo -e "   $system_version\n"
      fi
    fi ; unset current_ruby version selected
  fi
}

function __rvm_initialize {
  rvm_fetch=`which curl`
  if [ $? -ne 0 ] ; then
    rvm_fetch=`which wget`
    if [ $? -ne 0 ] ; then
      __rvm_log "fail" "rvm expects either curl or wget, neither seem to be in your path :("
    else
      rvm_fetch="wget -c " # -q for quiet
    fi
  else
    rvm_fetch="$rvm_fetch -O -L --create-dirs -C - " # -s for silent
  fi

  # TODO: Sanitize user input, ensure that there is a / a the end...
  if [ "`whoami`" = "root" ] ; then
    __rvm_log "fail" "root user support is not yet implemented."
    #rvm_prefix_path=${rvm_prefix_path:-/usr/local/}
  else
    rvm_prefix_path=${rvm_prefix_path:-"$HOME/."}
  fi
  if [ "${rvm_prefix_path#${rvm_prefix_path%?}}" = '.' -o "${rvm_prefix_path#${rvm_prefix_path%?}}" = '/' ] ; then
    rvm_path="${rvm_prefix_path}rvm"
  else
    rvm_path="${rvm_prefix_path}/rvm"
  fi
  rvm_archives_path="${rvm_archives_path:-"$rvm_path/archives"}"
  rvm_source_path="${rvm_source_path:-"$rvm_path/src"}"
  rvm_log_path=${rvm_log_path:-"$rvm_path/log"}
  rvm_bin_path=${rvm_bin_path:-"$rvm_path/bin"}
  rvm_gem_path=${rvm_gem_path:-"$rvm_path/gems"}
  rvm_config_path=${rvm_config_path:-"$rvm_path/config"}
  rvm_temp_path=${rvm_temp_path:-"$rvm_path/tmp"}

  rvm_ruby_repo_url="${rvm_ruby_repo_url:-"http://svn.ruby-lang.org/repos/ruby"}"
  # Rubinius sha1's will be available after RC1.
  rvm_rubinius_repo_url="${rvm_rubinius_repo_url:-"git://github.com/evanphx/rubinius.git"}"
  rvm_jruby_repo_url="${rvm_jruby_repo_url:-"git://kenai.com/jruby~main"}"
  rvm_ruby_load_path="."
  rvm_ruby_require=""

  __rvm_clean-path
  rvm_result=$(echo $PATH | grep 'rvm\/bin:')
  if [ -z $rvm_result ] ; then
    PATH=$rvm_bin_path:$PATH ; export PATH
  fi

  mkdir -p $rvm_source_path $rvm_bin_path $rvm_archives_path $rvm_gem_path $rvm_temp_path
}

function __rvm_update {
  if [ "$rvm_ruby_rev" = "head" -o ! -z "$rvm_self_flag" -o ! -z "$rvm_update_flag" ] ; then
    __rvm_version
    __rvm_update_rvm
    __rvm_version
  fi
  __rvm_reload
  # if [ "$rvm_gem_flag" ]      ; then __rvm_gem_scripts    ; fi
  if [ "$rvm_bin_flag" ]      ; then __rvm_bin_scripts    ; fi
  if [ "$rvm_rubygems_flag" ] ; then __rvm_rubygems_setup ; fi
}

function __rvm_update_rvm {
  mkdir -p $rvm_source_path
  if [ "$rvm_ruby_rev" = "head" ] ; then
    if [ -d $rvm_source_path/rvm/.git ] ; then
      cd $rvm_source_path/rvm/ && git pull origin master && ./scripts/install
    else
      cd $rvm_source_path && git clone git://github.com/wayneeseguin/rvm.git && cd rvm/ && ./install
    fi
  else
    # TODO: rvm_install_path:
    gem install rvm --no-rdoc --no-ri -q && rvm-install && source ~/.rvm/scripts/rvm
  fi
}

function __rvm_reboot {
  __rvm_log "warn" "Do you wish to reset rvm? ('yes', or 'no')"
  read response
  if [ "$response" = "yes" ] ; then
    cd
    __rvm_reset
    mv ~/.rvm/archives ~/.archives
    if [ "$rvm_path" = "/" ] ; then
      __rvm_log "error" "remove '/' ?!... NO!"
    else
      if [ -d $rvm_path ] ; then
        rm -rf $rvm_path/
      fi
    fi
    gem install rvm --no-rdoc --no-ri -q
    which rvm-install 2> /dev/null
    if [ $? -gt 0 ] ; then
      if [ -e ~/.gem/ruby/1.8/bin/rvm-install ] ; then
        ~/.gem/ruby/1.8/bin/rvm-install
      else
        __rvm_log "error" "Could not find rvm-install in your path :("
      fi
    else
      rvm-install
    fi
    source ~/.rvm/scripts/rvm
  else
    __rvm_log "info" "Carry on then..."
  fi
  unset response
}

function __rvm_reload {
  source $rvm_path/scripts/rvm
}

function __rvm_ruby_do {
  __rvm_select
  __rvm_use
  binary=`echo $rvm_action | sed 's/do$//'`
  if [ -x $rvm_ruby_home/bin/$binary ] ; then
    load_path="$rvm_ruby_home/bin:$rvm_ruby_load_path"
    if [ "$binary" = "ruby" ] ; then
      rvm_command="$rvm_ruby_home/bin/$binary $rvm_ruby_require -I$load_path -S $rvm_ruby_args"
    else
      rvm_command="$rvm_ruby_home/bin/$binary $rvm_ruby_args"
    fi
    echo -e "\n$rvm_ruby_string: $($rvm_ruby_home/bin/$binary -v)"
    eval "$rvm_command"
    result=$?
    if [ $result -eq 0 ]; then
      eval "successes=(${successes[*]} $rvm_ruby_string)"
    else
      eval "errors=(${errors[*]} $rvm_ruby_string)"
    fi
    eval "rubies=(${rubies[*]} $rvm_ruby_string)"
    eval "statuses=(${statuses[*]} $result)"
    # TODO: keep track of and re-set the previous selected ruby ;)
  else
    __rvm_log "warn" "'$rvm_ruby_home/bin/$binary' either does not exist or is not executable? :("
  fi
  unset rvm_ruby_interpreter rvm_ruby_version rvm_ruby_repo_url rvm_ruby_package_name rvm_ruby_patch_level rvm_ruby_configure rvm_ruby_make rvm_ruby_make_install rvm_ruby_rev rvm_ruby_tag rvm_major_version rvm_minor_version rvm_gem_set_name rvm_gem_home rvm_ruby_binary rvm_ruby_package_name rvm_ruby_home rvm_ruby_log_path rvm_ruby_src_path rvm_ruby_irbrc rvm_selected
}

function __rvm_do {
  __rvm_state

  rubies=() ; successes=() ; errors=() ; statuses=()
  # TODO: Extract the common functionality out of the if below
  if [ ! -z "$rvm_ruby_string" ] ; then
    unset rvm_ruby_interpreter rvm_ruby_version
    __rvm_ruby_do
  elif [ ! -z "$rvm_ruby_version" ] ;then
    for rvm_ruby_selector in `echo $rvm_ruby_version | tr ',' ' '` ; do
      unset rvm_ruby_string
      __rvm_ruby_do
    done
  elif [ ! -z "$rvm_ruby_interpreter" ] ; then
      unset rvm_ruby_string rvm_ruby_version
      __rvm_ruby_do
  else # all
    while read bin_line
    do # Keep this on second line damnit!
      if [ -x $bin_line ] ; then
        rvm_ruby_string="`dirname $bin_line | xargs dirname | xargs basename`"
        __rvm_ruby_do
      fi
    done < <(/bin/ls $rvm_path/*/bin/ruby 2> /dev/null)
  fi

  if [ ! -z "$rvm_summary_flag" ] ; then __rvm_summary ; fi
  if [ ! -z "$rvm_yaml_flag" ]    ; then __rvm_yaml    ; fi
  if [ ! -z "$rvm_json_flag" ]    ; then __rvm_json    ; fi

  __rvm_state

  return ${#errors[*]}
}

function __rvm_summary {
  export successes errors statuses
  echo -e "\nSummary:"
  echo -e "\033[0;32msuccessful (${#successes[*]}) : [ $(echo "${successes[*]}" | sed 's/ /, /g') ]\033[0m"
  echo -e "\033[0;31merrors (${#errors[*]}) : [ $(echo "${errors[*]}" | sed 's/ /, /g') ]\033[0m"
  echo -e "rubies (${#rubies[*]}) : [ $(echo "${rubies[*]}" | sed 's/ /, /g') ]"
  echo -e "statuses: [ $(echo "${statuses[*]}" | sed 's/ /, /g') ]\n"
  return ${#errors[*]}
}

function __rvm_yaml {
  export successes errors statuses
  yaml="\ntotals:\n    rubies: ${#rubies[*]}\n    successes: ${#successes[*]}\n    errors: ${#errors[*]}\n  successes:"
  for var in ${successes[*]} ; do
    yaml="$yaml\n    - $var"
  done
  yaml="$yaml\n  errors:"
  for var in ${errors[*]} ; do
    yaml="$yaml\n    - $var"
  done
  yaml="$yaml\n  rubies:"
  total=${#rubies[*]}
  if [ ! -z "$ZSH_VERSION" ] ; then array_start=1 ; else array_start=0 ; fi
  for (( index = $array_start ; index < $total + $array_start ; index++ )) ; do
    echo "${rubies[$index]}: ${statuses[$index]}"
    yaml="$yaml\n    \"${rubies[$index]}\": ${statuses[$index]}"
  done ; unset index array_start

  mkdir -p log
  echo -e "$yaml" | tee -a log/summary.yaml

  return ${#errors[*]}
}

function __rvm_json {
  json="{"
  json="$json\n  \"totals\": { \"rubies\": ${#rubies[*]}, \"successes\": ${#successes[*]}, \"errors\": ${#errors[*]}},"
  json="$json\n  \"successful\": [ "$(echo ${successes[*]} | sed 's/ /", "/g')" ],"
  json="$json\n  \"errors\": [ "$(echo ${errors[*]} | sed 's/ /", "/g')" ],"
  json="$json\n  \"rubies\": {"

  total=${#rubies[*]}
  if [ ! -z "$ZSH_VERSION" ] ; then array_start=1 ; else array_start=0 ; fi
  for (( index = $array_start ; index < $total + $array_start ; index++ )) ; do
    echo "${rubies[$index]}: ${statuses[$index]}"
    json="$json\n    {\"${rubies[$index]}\": ${statuses[$index]}}"
    if (( $index + 1 < $total + $array_start )) ; then json="$json,  " ; fi
  done ; unset index array_start
  json="$json\n  }\n}"

  mkdir -p log
  echo -e "$json" | tee -a log/summary.json

  return ${#errors[*]}
}

function __rvm_benchmark {
  rvm_code="$(cat <<RubyCode
#!/usr/bin/env ruby
require "benchmark"
Benchmark.bmbm do|benchmark|
  benchmark.report("benchmarking '$rvm_ruby_file'") do

RubyCode
)"
  echo "$rvm_code" > $rvm_temp_path/$$.rb
  cat $rvm_ruby_file >> $rvm_temp_path/$$.rb
  echo -e "\n  end\nend\n" >> $rvm_temp_path/$$.rb
  unset rvm_code
  rvm_ruby_args="$rvm_temp_path/$$.rb"
  rvm_action="ruby"
  if [ ! -z "$rvm_debug_flag" ] ; then echo -e "$rvm_temp_path/$$.rb:\n$(cat $rvm_temp_path/$$.rb)" ; fi
  __rvm_do
}

function __rvm_gemset_dump {
  if [ -z "$rvm_selected" ] ; then __rvm_select $* ; fi
  rvm_file_name=${rvm_file_name:-'default'}

  echo "# $rvm_gem_set_name.gemset generated gem dump file. Note that any env variable settings will be missing. Append these after using a ';' field separator" > $rvm_gem_set_name.gemset

  for gem in `gem list | sed 's/[\(|\)]//g' | sed 's/, /,/g' | tr ' ' ';'` ; do
    name=`echo $gem | awk -F';' '{print $1}'`
    if [ -z "$rvm_latest_flag" ] ; then
      versions=`echo $gem | awk -F';' '{print $2}' | sed 's/,/ /g'`
      for version in $versions ; do
        echo "$name -v$version" >> $rvm_file_name
      done ; unset version versions
    else
      echo "$name" >> $rvm_file_name
    fi ; unset name
  done ; unset file_name
}

function __rvm_gemset_load {
  if [ -z "$rvm_selected" ] ; then __rvm_select $* ; fi
  echo "Loading $rvm_file file..."
  rvm_ruby_gem_list=`/bin/ls $rvm_gem_home/specifications/ 2> /dev/null | sed 's/\.gemspec$//' 2> /dev/null`
  while read line
  do # Keep this on 2nd line :( bash fail.
    # TODO: Switch to a different field separator than ; to allow for evals
    gem=`echo $line | awk -F';' '{print $1}'`
    gem_prefix=`echo $line | awk -F';' '{print $2}'`
    gem_name=`echo $gem | awk '{print $1}'`
    gem_version=`echo $gem | sed 's/^.*-v[=]*[ ]*//' | awk '{print $1}'`
    gem_postfix=`echo $gem | sed "s/$gem_name//" | sed "s/-v[=]*[ ]*$gem_version//"`

    if [ -z "$gem_version" ] ; then # no version
      gem_file_name="${gem_name}*.gem"
    else # version
      gem_file_name="$gem_name-$gem_version.gem"
    fi

    cache_file=`/bin/ls -t $rvm_gem_path/*/*/cache/${gem_file_name}* 2> /dev/null | head -n1`
    if [ -z "$cache_file" ] ; then
      if [ -z "$gem_version" ] ; then
        gem="$gem_name"
      else
        gem="$gem_name -v $gem_version"
      fi
    else # cached
      gem_file_name=`basename $cache_file`
      gem_string=`echo "$gem_file_name" | sed 's/\.gem$//'`
      if [ ! -z "`echo "$rvm_ruby_gem_list" | awk "/$gem_string/{print}"`" ] ; then
        if [ ! -z "$rvm_force_flag" ] ; then
          cp $cache_file $rvm_temp_path/$gem_file_name
          gem="$rvm_temp_path/$gem_file_name" # install as a named local gem
        else
          unset gem
          __rvm_log "info" "$gem_name $gem_version is already installed, skipping. (use --force to force these to install regardless)"
        fi
      else
        gem="$cache_file"
      fi
    fi

    if [ ! -z "$gem" ] ; then
      # TODO: Set vars if fourth field is non-empty (means that there are conditional statements to execute in the gem install line.
      if [ -z "$vars" ] ; then
        GEM_HOME="$rvm_gem_home" GEM_PATH="$rvm_gem_home" $gem_prefix $rvm_ruby_home/bin/gem install --no-rdoc --no-ri -q $gem $gem_postfix
      else
        eval "GEM_HOME='$rvm_gem_home' GEM_PATH='$rvm_gem_home' $gem_prefix $rvm_ruby_home/bin/gem install --no-rdoc --no-ri -q $gem $gem_postfix"
      fi
    fi
    unset gem gem_prefix gem_name gem_version gem_file_name gem_postfix cache_file gem_file_name gem_string
  done < <(awk '/^[a-zA-Z]/{print}' "$rvm_file_name")
}

function __rvm_irbrc {
  if [ -d $rvm_ruby_home -a ! -s $rvm_ruby_irbrc ] ; then
    rvm_ruby_irbrc_file=$(cat <<-Config

require "irb/completion" rescue nil

@prompt = {
  :PROMPT_I => "${rvm_ruby_package_name} > ",  # default prompt
  :PROMPT_S => "${rvm_ruby_package_name}%l> ", # known continuation
  :PROMPT_C => "${rvm_ruby_package_name} > ",
  :PROMPT_N => "${rvm_ruby_package_name} ?> ", # unknown continuation
  :RETURN => " => %s \n",
  :AUTO_INDENT => true
}
@prompt_mode = :DEFAULT
IRB.conf[:PROMPT][@prompt_mode] = @prompt
IRB.conf[:PROMPT_MODE] = @prompt_mode

load '$HOME/.irbrc' if File.exists?('$HOME/.irbrc') rescue nil

Config
)
    touch $rvm_ruby_irbrc
    echo -e "\n$rvm_ruby_irbrc_file" > $rvm_ruby_home/.irbrc
    unset rvm_ruby_irbrc_file
  fi
}

function __rvm_pushpop {
  if [ -z "$1" ] ; then
    popd > /dev/null 2>&1
  else
    pushd $1 > /dev/null 2>&1
  fi
}

function __rvm_state {
  if [ -z "$rvm_state" ] ; then
    if [ -z "$(which ruby | awk /`basename $rvm_path`/)" ] ; then
      rvm_state=system
    else
      rvm_state="$(dirname `which ruby` | xargs dirname | xargs basename)"
    fi
  else
    rvm_ruby_string="$rvm_state"
    __rvm_select
    __rvm_use
    unset rvm_state
  fi
}

function __rvm_inspect {
  for binary in $rvm_ruby_args ; do
    actual_file=`which $binary`
    __rvm_log "info" "$actual_file:"
    if [ ! -z "$rvm_shebang_flag" ] ; then cat $actual_file | head -n 1    ; fi
    if [ ! -z "$rvm_env_flag" ]     ; then cat $actual_file | awk '/ENV/'  ; fi
    if [ ! -z "$rvm_path_flag" ]    ; then cat $actual_file | awk '/PATH/' ; fi
    if [ ! -z "$rvm_head_flag" ]    ; then cat $actual_file | head -n 5    ; fi
    if [ ! -z "$rvm_tail_flag" ]    ; then cat $actual_file | tail -n 5    ; fi
    if [ ! -z "$rvm_all_flag" ]     ; then cat $actual_file                ; fi
  done
}

#
# ruby supporting libraries:
#
function __rvm_readline_install {
  __rvm_pushpop $rvm_source_path
  package="readline" ; version="5.2"
  # TODO: Figure out how to list, grab and apply the patches
  __rvm_fetch "ftp://ftp.gnu.org/gnu/readline/$package-$version.tar.gz"
  __rvm_run "$package.extract" tar zxf $rvm_archives_path/$package-$version.tar.gz -C $rvm_source_path
  cd $rvm_source_path/$package-$version
  if [ "`uname`" = "Darwin" ] ; then
    sdk=`ls -t /Developer/SDKs/ | head -n 1`
    CFLAGS="-isysroot /Developer/SDKs/$sdk -arch i386 -arch x86_64"
    LDFLAGS="-Wl,-syslibroot,/Developer/SDKs/$sdk -arch i386 -arch x86_64"
    export CFLAGS LDFLAGS
    __rvm_run "$package.configure" "./configure --prefix=$rvm_path/usr --disable-dependency-tracking --disable-static --enable-shared"
  else
    __rvm_run "$package.configure" "./configure --prefix=$rvm_path/usr --disable-dependency-tracking --disable-static --enable-shared"
  fi
  __rvm_run "$package.make" "/usr/bin/make $rvm_make_flags"
  __rvm_run "$package.make.install" "/usr/bin/make install"
  __rvm_pushpop
}

function __rvm_iconv_install {
  __rvm_pushpop $rvm_source_path
  package="libiconv" ; version=1.13.1
  __rvm_fetch "http://ftp.gnu.org/pub/gnu/libiconv/$package-$version.tar.gz"
  __rvm_run "$package.extract" "tar zxf $rvm_archives_path/$package-$version.tar.gz -C $rvm_source_path"
  cd $rvm_source_path/$package-$version
  __rvm_run "$package.configure" "./configure --prefix=$rvm_path/usr --disable-shared"
  __rvm_run "$package.make" "/usr/bin/make $rvm_make_flags"
  __rvm_run "$package.make.install" "/usr/bin/make install"
  __rvm_pushpop
}