+#!/bin/bash
+
+##
+# Copyright 2015 Telefónica Investigación y Desarrollo, S.A.U.
+# This file is part of openmano
+# All Rights Reserved.
+#
+# Licensed under the Apache License, Version 2.0 (the "License"); you may
+# not use this file except in compliance with the License. You may obtain
+# a copy of the License at
+#
+# http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
+# WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
+# License for the specific language governing permissions and limitations
+# under the License.
+#
+# For those usages not covered by the Apache License, Version 2.0 please
+# contact with: nfvlabs@tid.es
+##
+
+
+#Utility for getting options, must be call with source
+#for every <option> it sets a variable 'option_<option>="-"'
+#if the option appears more than once, it concatenates a "-"
+#if the option contains an argument: 'option_<option>="argument"'
+#if the long option name contains "-" they are converted to "_"
+#params that are not options are stored in 'params'
+#the options to look for is received in the first argument,
+#a blank separator list with short and long options without the leading - or --
+#options to be stored in the same variable must appear in the same word separated by ':'
+#insert a trailing = if the option requires an argument
+#insert a trailing ? if the option may have an argument NOT IMPLEMENTED
+#option -- means get the rest of argument returned as 'option__=$*'
+
+#example: to allow options -h --help -j -k(with argument) --my-long-option(with argument)
+# and other parameters after -- provide
+# "help:h j k= my-long-option="
+#parsing "-h -karg pepe --my-long-option=otherar -- -s" will set variables
+# option_help="-"
+# option_k="arg"
+# option_my_long_option="otherarg"
+# params=" pepe"
+# option__="-s"
+
+
+#detect if is called with a source to use the 'exit'/'return' command for exiting
+[[ ${BASH_SOURCE[0]} != $0 ]] && ___exit="return" || ___exit="exit"
+
+options="$1"
+shift
+
+get_argument=""
+#reset variables
+params=""
+for option_group in $options
+do
+ _name=${option_group%%:*}
+ _name=${_name%=}
+ _name=${_name//-/_}
+ eval option_${_name}='""'
+done
+
+while [[ $# -gt 0 ]]
+do
+ argument="$1"
+ shift
+ if [[ -n $get_argument ]]
+ then
+ [[ ${argument:0:1} == "-" ]] && echo "option '-$option' requires an argument" >&2 && $___exit 1
+ eval ${get_argument}='"$argument"'
+ #echo option $get_argument with argument
+ get_argument=""
+ continue
+ fi
+
+
+ #short options
+ if [[ ${argument:0:1} == "-" ]] && [[ ${argument:1:1} != "-" ]] && [[ ${#argument} -ge 2 ]]
+ then
+ index=0
+ while index=$((index+1)) && [[ $index -lt ${#argument} ]]
+ do
+ option=${argument:$index:1}
+ bad_option=y
+ for option_group in $options
+ do
+ _name=""
+ for o in $(echo $option_group | tr ":=" " ")
+ do
+ [[ -z "$_name" ]] && _name=${o//-/_}
+ #echo option $option versus $o
+ if [[ "$option" == "${o}" ]]
+ then
+ eval option_${_name}='${option_'${_name}'}-'
+ bad_option=n
+ if [[ ${option_group:${#option_group}-1} != "=" ]]
+ then
+ continue
+ fi
+ if [[ ${#argument} -gt $((index+1)) ]]
+ then
+ eval option_${_name}='"${argument:$((index+1))}"'
+ index=${#argument}
+ else
+ get_argument=option_${_name}
+ #echo next should be argument $argument
+ fi
+
+ break
+ fi
+ done
+ done
+ [[ $bad_option == y ]] && echo "invalid argument '-$option'? Type -h for help" >&2 && $___exit 1
+ done
+ elif [[ ${argument:0:2} == "--" ]] && [[ ${#argument} -ge 3 ]]
+ then
+ option=${argument:2}
+ option_argument=${option#*=}
+ option_name=${option%%=*}
+ [[ "$option_name" == "$option" ]] && option_argument=""
+ bad_option=y
+ for option_group in $options
+ do
+ _name=""
+ for o in $(echo $option_group | tr ":=" " ")
+ do
+ [[ -z "$_name" ]] && _name=${o//-/_}
+ #echo option $option versus $o
+ if [[ "$option_name" == "${o}" ]]
+ then
+ bad_option=n
+ if [[ ${option_group:${#option_group}-1} != "=" ]]
+ then #not an argument
+ [[ -n "${option_argument}" ]] && echo "option '--${option%%=*}' do not accept an argument " >&2 && $___exit 1
+ eval option_${_name}='"${option_'${_name}'}-"'
+ elif [[ -n "${option_argument}" ]]
+ then
+ eval option_${_name}='"${option_argument}"'
+ else
+ get_argument=option_${_name}
+ #echo next should be argument $argument
+ fi
+ break
+ fi
+ done
+ done
+ [[ $bad_option == y ]] && echo "invalid argument '-$option'? Type -h for help" >&2 && $___exit 1
+ elif [[ ${argument:0:2} == "--" ]]
+ then
+ option__="$*"
+ bad_option=y
+ for o in $options
+ do
+ if [[ "$o" == "--" ]]
+ then
+ bad_option=n
+ option__=" $*"
+ break
+ fi
+ done
+ [[ $bad_option == y ]] && echo "invalid argument '--'? Type -h for help" >&2 && $___exit 1
+ break
+ else
+ params="$params ${argument}"
+ fi
+
+done
+
+[[ -n "$get_argument" ]] && echo "option '-$option' requires an argument" >&2 && $___exit 1
+$___exit 0
+#echo params $params
+