ansible module sample (plenv)

plenv

#!/bin/bash

eval $(perl -lne 'while(/\s?([^=\s]+)\s?=\s?(\"(?:\\\"|[^\"])+\"|\x27(?:\x27\\\x27\x27|[^\x27])+\x27|\S+)\s?/g){print "$1=$2"}' $1)

if [ -n "${debug}" ]; then
  set -x
fi

changed="false"
rc=0
ret_install_perl=0
ret_install_cpanm=0
ret_set_global=0
messages=()
message=""

is_command_exist()
{
    (type $1 > /dev/null 2>&1) && echo "yes"
}

is_user_exist()
{

    (awk -F":" '{ print $1 }' /etc/passwd | egrep "^${1}$" > /dev/null 2>&1) && echo "yes"
}

get_uid()
{
    _uid=$(awk -F":" '$1 ~ /^'"$1"'$/{ print $3 }' /etc/passwd)
    echo $_uid
}

get_gid()
{
    _gid=$(awk -F":" '$1 ~ /^'"$1"'$/{ print $4 }' /etc/passwd)
    echo $_uid
}

get_homedir()
{
    _homedir=$(awk -F":" '$1 ~ /^'"$1"'$/{ print $6 }' /etc/passwd)
    echo $_homedir
}

plenv_init()
{
    #_user_homedir=$(awk -F":" '$1 ~ /^'"$1"'$/{ print $6 }' /etc/passwd)
    export PLENV_ROOT="$(get_homedir)/.plenv"
    eval "$(plenv init - )"
}

plenv_version()
{
   _global=$(plenv version)
   echo "${_global}" | cut -d ' ' -f 1
}

plenv_install()
{
  plenv install $1 > /dev/null 2>&1
  case $? in
    0)   echo "yes"   ;;
    255) echo "no"    ;;
    *)   echo "error" ;;
  esac
}

plenv_install_cpanm()
{
  stdout_install_cpanm=$(plenv global $1 && plenv install-cpanm 2>&1)
  ret_install_cpanm=$?
  if [ "${ret_install_cpanm}" != 0 ]; then
     echo "error"
  else
    (echo "${stdout_install_cpanm}" | grep "Successfully installed App-cpanminus" > /dev/null 2>&1)
    if [ $? = 0 ]; then
      echo "yes"
    else
      (echo "${stdout_install_cpanm}" | grep "App::cpanminus is up to date" > /dev/null 2>&1)
      if [ $? = 0 ]; then
        echo "no"
      else
        echo "error"
      fi
    fi
  fi
}

plenv_global()
{
  plenv global $1 > /dev/null 2>&1
  [ $? -eq 0 ] && echo "yes" || echo "error"
}

# setup
if [ "$(is_command_exist plenv)" != "yes" ]; then
    printf "failed=true msg='plenv command not found'\n"
    exit 1
fi

# user
if [ -z "${user}" ]; then
    printf "failed=true msg='no user defined'"
    exit 1
elif [ "$(is_user_exist ${user})" != "yes" ]; then
    printf "failed=true msg='no user found'"
    exit 1
fi

# init
plenv_init $user

# get current global version
previous_global=$(plenv_version)

# install  perl
if [ -n "${perl}" ]; then
  case "$(plenv_install ${perl})" in
    "yes") ret_install_perl=1 ;;
    "no")  ret_install_perl=0 ;;
    *)     printf "failed=true msg=\"failed to install perl-${perl}\""
           exit 1
           ;;
  esac
  case "$(plenv_install_cpanm ${perl})" in
    "yes") ret_install_cpanm=1 ;;
    "no")  ret_install_cpanm=0 ;;
    *)     printf "failed=true msg=\"failed to install cpanm for perl-${perl}\""
           exit 1
           ;;
  esac
fi

# set global
current_global=$(plenv_version)
if [ -n "${global}" ]; then
  if [ "${global}" != "${previous_global}" ]; then
    if [ "$(plenv_global ${global})" = "yes" ]; then
      ret_set_global=1
    else
      printf "failed=true msg=\"failed to set perl-${global} as global\""
      exit 1
    fi
  else
    if [ "$(plenv_global ${global})" != "yes" ]; then
      printf "failed=true msg=\"failed to restore perl-${global} as global\""
      exit 1
    fi
  fi
else
  if [ "${current_global}" != "${previous_global}" ]; then
    if [ "$(plenv_global ${previous_global})" != "yes" ]; then
      printf "failed=true msg=\"failed to restore perl-${previous_global} as global\""
      exit 1
    fi
  fi
fi

# result
if [ ${ret_install_perl} -gt 0 -o ${ret_install_cpanm} -gt 0 -o ${ret_set_global} -gt 0 ]; then
  chown -r $(get_uid):$(get_gid) $PLENV_ROOT
  changed="true"
fi
[ ${ret_install_perl}  -gt 0 ] && messages=("${messages[@]}" "perl=\"${perl}\"")
[ ${ret_install_cpanm} -gt 0 ] && messages=("${messages[@]}" "cpanm=\"${perl}\"")
[ ${ret_set_global}    -gt 0 ] && messages=("${messages[@]}" "global=\"${global}\"")
if [ ${#messages[*]} -gt 0 ]; then
    eval 'message="${messages[*]}"'
fi
echo "rc=0 changed=${changed} message=$message"