#!/usr/bin/env bash

is_a_function()
{
  typeset -f $1 >/dev/null 2>&1 || return $?
}

# Functions RVM is built on
# __rvm_string_match <value> <string|glob>
if
 [[ -n "$ZSH_VERSION" ]]
then
  __rvm_string_match()
  {
    typeset _string
    _string="$1"
    shift
    while (( $# ))
    do
      eval "\
      case \"\${_string}\" in\
        ($1) return 0 ;;\
      esac\
      "
      shift
    done
    return 1
  }
else
  __rvm_string_match()
  {
    typeset _string
    _string="$1"
    shift
    while (( $# ))
    do
      case "${_string}" in
        ($1) return 0 ;;
      esac
      shift
    done
    return 1
  }
fi

__rvm_array_contains()
{
  typeset _search _iterator
  _search="$1"
  shift
  for _iterator
  do
    case "${_iterator}" in
      (${_search}) return 0 ;;
    esac
  done
  return 1
}

__rvm_array_add_or_update()
{
  typeset _array_name _variable _separator _value _local_value
  typeset -a _array_value_old _array_value_new

  _array_name="$1"
  _variable="$2"
  _separator="$3"
  _value="${4##${_separator}}"
  _array_value_new=()
  eval "_array_value_old=( \"\${${_array_name}[@]}\" )"

  case " ${_array_value_old[*]} " in
    (*[[:space:]]${_variable}*)
      for _local_value in "${_array_value_old[@]}"
      do
        case "${_local_value}" in
          (${_variable}*)
            _array_value_new+=( "${_local_value}${_separator}${_value}" )
            ;;
          (*)
            _array_value_new+=( "${_local_value}" )
            ;;
        esac
      done
      ;;
    (*)
      _array_value_new=( "${_array_value_old[@]}" "${_variable}${_value}" )
      ;;
  esac

  eval "${_array_name}=( \"\${_array_value_new[@]}\" )"
}

__rvm_array_prepend_or_ignore()
{
  typeset _array_name _variable _separator _value _prefix _local_value
  typeset -a _array_value_old _array_value_new

  _array_name="$1"
  _variable="$2"
  _separator="$3"
  _value="$4"
  _prefix="$5"
  _array_value_new=()
  eval "_array_value_old=( \"\${${_array_name}[@]}\" )"

  case " ${_array_value_old[*]} " in
    (*[[:space:]]${_variable}*)
      for _local_value in "${_array_value_old[@]}"
      do
        case "${_local_value}" in
          (${_variable}*${_prefix}*)
            rvm_debug "__rvm_array_prepend_or_ignore ${_array_name} ${_local_value}"
            _array_value_new+=( "${_local_value}" )
            ;;
          (${_variable}*)
            rvm_debug "__rvm_array_prepend_or_ignore ${_array_name} ${_variable}\"${_value}${_separator}${_local_value#${_variable}}\""
            _array_value_new+=( "${_variable}${_value}${_separator}${_local_value#${_variable}}" )
            ;;
          (*)
            _array_value_new+=( "${_local_value}" )
            ;;
        esac
      done
      eval "${_array_name}=( \"\${_array_value_new[@]}\" )"
      ;;
  esac
}

# Drop in replacement for sed -i compatible with OpenBSD
# Assumes that filename is the first argument, all others are passed onto sed
__rvm_sed_i()
{
  typeset _filename _executable
  [[ -n "${1:-}" ]] || {
    rvm_debug "no file given for __rvm_sed_i"
    return 0
  }
  _filename="$1"
  shift

  if [[ -x "${_filename}" ]]
  then _executable=true
  fi

  {
    __rvm_sed "$@" < "${_filename}" > "${_filename}.new" &&
    \mv -f "${_filename}.new" "${_filename}"
  } 2>&1 | rvm_debug_stream

  if [[ -n "${_executable:-}" ]]
  then chmod +x "${_filename}"
  fi
}

# Drop in cd which _doesnt't_ respect cdpath
__rvm_cd()
{
    typeset old_cdpath ret
    ret=0
    old_cdpath="${CDPATH}"
    CDPATH="."
    chpwd_functions="" builtin cd "$@" || ret=$?
    CDPATH="${old_cdpath}"
    return $ret
}

__rvm_setup_utils_functions()
{
  typeset gnu_tools_path gnu_prefix gnu_util
  typeset -a gnu_utils gnu_missing
  gnu_utils=( awk cp date find sed tail tar xargs )
  gnu_missing=()

  if is_a_function __rvm_setup_utils_functions_${_system_name}
  then __rvm_setup_utils_functions_${_system_name} "$@" || return $?
  else __rvm_setup_utils_functions_Other "$@" || return $?
  fi
}

__rvm_setup_utils_functions_Solaris()
{
  case "${_system_version}" in
    (10)
      gnu_tools_path=/opt/csw/bin
      gnu_prefix="g"
      ;;
    (11)
      gnu_tools_path=/usr/gnu/bin
      gnu_prefix=""
      ;;
  esac

  if [[ -x $gnu_tools_path/${gnu_prefix}grep ]]
  then eval "__rvm_grep() { GREP_OPTIONS=\"\" $gnu_tools_path/${gnu_prefix}grep \"\$@\" || return \$?; }"
  else gnu_missing+=( ${gnu_prefix}grep )
  fi

  if [[ "${_system_name}" == "OpenIndiana" || "${_system_version}" == "11" ]]
  then __rvm_stat() { \stat "$@" || return $?; }
  elif [[ -x $gnu_tools_path/${gnu_prefix}stat ]]
  then eval "__rvm_stat() { $gnu_tools_path/${gnu_prefix}stat \"\$@\" || return \$?; }"
  else gnu_missing+=( ${gnu_prefix}stat )
  fi

  if [[ "${_system_name}" == "SmartOS" ]]
  then __rvm_which() { \which "$@" || return $?; }
  elif [[ -x $gnu_tools_path/${gnu_prefix}which ]]
  then eval "__rvm_which() { $gnu_tools_path/${gnu_prefix}which \"\$@\" || return \$?; }"
  else gnu_missing+=( ${gnu_prefix}which )
  fi

  for gnu_util in "${gnu_utils[@]}"
  do
    if [[ -x $gnu_tools_path/$gnu_prefix$gnu_util ]]
    then eval "__rvm_$gnu_util() { $gnu_tools_path/$gnu_prefix$gnu_util \"\$@\" || return \$?; }"
    else gnu_missing+=( $gnu_prefix$gnu_util )
    fi
  done

  if
    (( ${#gnu_missing[@]} ))
  then
    rvm_error "ERROR: Missing GNU tools: ${gnu_missing[@]}. Make sure they are installed in '$gnu_tools_path/' before using RVM!"
    if [[ "${_system_name} ${_system_version}" == "Solaris 10" ]]
    then rvm_error "You might want to look at OpenCSW project to install the above mentioned tools (http://opencsw.org/about)"
    fi
    exit 200
  fi
}
__rvm_setup_utils_functions_Other()
{
  __rvm_grep() { GREP_OPTIONS="" \grep "$@" || return $?; }
  __rvm_stat() { \stat "$@" || return $?; }

  if command which --skip-alias --skip-functions which >/dev/null 2>&1
  then __rvm_which() { command which --skip-alias --skip-functions "$@" || return $?; }
  elif command which whence >/dev/null 2>&1 && command whence whence >/dev/null 2>&1
  then __rvm_which() { command whence -p "$@" || return $?; }
  elif command which which >/dev/null 2>&1
  then __rvm_which() { command which "$@" || return $?; }
  elif which which >/dev/null 2>&1
  then __rvm_which() { which "$@" || return $?; }
  else rvm_fail "ERROR: Missing proper 'which' command. Make sure it is installed before using RVM!" 1
  fi

  for gnu_util in "${gnu_utils[@]}"
  do eval "__rvm_$gnu_util() { \\$gnu_util \"\$@\" || return \$?; }"
  done
}

__rvm_setup_utils_functions

if
  [[ ! " ${rvm_tar_options:-} " =~ " --no-same-owner "  ]] &&
  __rvm_tar --help 2>&1 | __rvm_grep -- --no-same-owner >/dev/null
then
  rvm_tar_options="${rvm_tar_options:-}${rvm_tar_options:+ }--no-same-owner"
fi

# Utils that are not needed for RVM installation
# but have non-standard paths in Solaris 10
other_utils=( ant automake autoreconf libtoolize make mount patch readlink )

if
  [[ "${_system_name} ${_system_version}" == "Solaris 10" ]]
then
  __rvm_ant()        { /usr/sfw/bin/ant        "$@" || return $?; }
  __rvm_automake()   { /opt/csw/bin/automake   "$@" || return $?; }
  __rvm_autoreconf() { /opt/csw/bin/autoreconf "$@" || return $?; }
  __rvm_libtoolize() { /opt/csw/bin/libtoolize "$@" || return $?; }
  __rvm_make()       { /opt/csw/bin/gmake      "$@" || return $?; }
  __rvm_mount()      { /sbin/mount             "$@" || return $?; }
  __rvm_patch()      { /opt/csw/bin/gpatch     "$@" || return $?; }
  __rvm_readlink()   { /opt/csw/bin/greadlink  "$@" || return $?; }
else
  for other_util in "${other_utils[@]}"
  do eval "__rvm_$other_util() { \\$other_util \"\$@\" || return \$?; }"
  done
fi
unset other_util other_utils

__rvm_readlink_deep()
{
  eval "
    while [[ -n \"\${$1}\" && -L \"\${$1}\" ]]
    do $1=\"\$(__rvm_readlink \"\${$1}\")\"
    done
  "
}

## duplication marker 32fosjfjsznkjneuera48jae
__rvm_curl_output_control()
{
  if
    (( ${rvm_quiet_curl_flag:-0} == 1 ))
  then
    __flags+=( "--silent" "--show-error" )
  elif
    [[ " $*" =~ " -s" || " $*" =~ " --silent" ]]
  then
    # make sure --show-error is used with --silent
    [[ " $*" =~ " -S" || " $*" =~ " -sS" || " $*" =~ " --show-error" ]] ||
    {
      __flags+=( "--show-error" )
    }
  fi
}

## duplication marker 32fosjfjsznkjneuera48jae
# -S is automatically added to -s
__rvm_curl()
(
  typeset curl_path
  if
    [[ "${_system_name} ${_system_version}" == "Solaris 10" ]] &&
    ! __rvm_which curl >/dev/null 2>&1
  then
    curl_path=/opt/csw/bin/
  else
    curl_path=""
  fi
  __rvm_which ${curl_path}curl >/dev/null 2>&1 ||
  {
    rvm_error "RVM requires 'curl'. Install 'curl' first and try again."
    return 200
  }

  typeset -a __flags
  __flags=( --fail --location )

  # allow overriding default 30 minutes for download, but should be plenty of time
  if [[ -n "${rvm_curl_flags[*]}" ]]
  then __flags+=( "${rvm_curl_flags[@]}" )
  else __flags+=( --max-redirs 10 --max-time 1800 )
  fi

  [[ "$*" == *"--max-time"* ]] ||
  [[ "$*" == *"--connect-timeout"* ]] ||
    __flags+=( --connect-timeout 30 --retry-delay 2 --retry 3 )

  if [[ -n "${rvm_proxy:-}" ]]
  then __flags+=( --proxy "${rvm_proxy:-}" )
  fi

  __rvm_curl_output_control

  unset curl
  __rvm_debug_command ${curl_path}curl "${__flags[@]}" "$@" || return $?
)

is_parent_of()
{
  typeset name pid ppid pname
  name=$1
  pid=$2
  while [[ -n "$pid" && "$pid" != "0" ]]
  do
    read ppid pname < <(ps -p $pid -o ppid= -o comm=)
    if [[ -n "$ppid" && -n "$pname" ]]
    then
      if [[ "$pname" == "$name" ]]
      then
        echo $pid
        return 0
      else
        pid=$ppid
      fi
    else
      break
    fi
  done
  return 1
}

__rvm_string_includes()
{
  typeset __search __text="$1"
  shift
  for __search in "$@"
  do
    if [[ " ${__text} " =~ " ${__search} " ]]
    then return 0
    fi
  done
  return 1
}

__function_on_stack()
{
  __rvm_string_includes "${FUNCNAME[*]}" "$@" || return $?
}

# read lines from file / stdin(-)
__rvm_read_lines()
{
  typeset IFS
  # NEW LINE, BE CAREFUL
  IFS="
"
  if [[ "${2:--}" == "-" ]]
  then eval "$1=( \$( \cat - ) )"
  else eval "$1=( \$( \cat \"\${2:--}\" ) )"
  fi
}

__rvm_ruby_config_save()
{
  typeset ruby_path config_path default_config_path
  ruby_path="${1:-$rvm_ruby_home/bin/ruby}"
  default_config_path="#{RbConfig::CONFIG[\"prefix\"]}/config"
  config_path="${2:-$default_config_path}"
  "$ruby_path" -rrbconfig -e '\
    File.open("'"$config_path"'","w") { |file|
      RbConfig::CONFIG.sort.each{|key,value|
        file.write("#{key.gsub(/\.|-/,"_")}=\"#{value.gsub("$","\\$")}\"\n")
      }
    }
  ' >/dev/null 2>&1
}

__rvm_record_ruby_configs()
{
  typeset __dir
  for __dir in "$rvm_path/rubies/"*
  do
    if
      [[ ! -L "${__dir}" && ! -s "${__dir}/config" && -x "${__dir}/bin/ruby" ]]
    then
      __rvm_ruby_config_save "${__dir}/bin/ruby" ||
      {
        typeset string="${__dir##*/}"
        rvm_error "    Can not save config data for ruby: '${string}', most likely it is broken installation and you can:
    - try fix it: 'rvm reinstall ${string}', OR:
    - remove  it: 'rvm uninstall ${string} --gems'"
      }
    fi
  done
}
