Bash - build URL query string by parsing script command arguments -

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i don't use bash need work on bit of bash has make curl request web service query string tail built command arguments contained in script command arguments variable $@. if command argument string -e -v -s somethingelse, query string must produced e=something&v=blank&s=somethingelse.

at moment test script looks this:

#!/bin/bash  set -e  echo "${@}"  query_string="" arg in "${@}" ;   if [[ "${arg}" =~ "-" ]] ;     query_string+="${arg}="   else     if [ -z "${arg}" ] ;       query_string+="blank&"     else       query_string+="${arg}&"     fi   fi done  echo "${query_string}" | tr -d '-'

and produces incorrect output

e=something&v=s=somethingelse&

i'm not sure i'm going wrong. suggestions appreciated.

how about:

#!/bin/bash  set -e  echo "${@}"  option=true query_string="" arg in "${@}" ;   if $option ;     query_string+="${arg}="     option=false   else     if [[ "${arg}" =~ "-" ]] ;       query_string+="blank&${arg}="     else       query_string+="${arg}&"       option=true     fi   fi done  echo "${query_string::-1}" | tr -d '-'

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