remove_dupes.sh

old_remove_dupes.sh

# XXX - need to pre-build daa=1 for "set -eu" scripts
function remove_dupes() {
  local dstring="${1}"
  local dsep="${2}"
  local -A daa
  local -a du
  for dl in $(echo "${dstring}" | tr "${dsep}" "\n") ; do
    if [ -z "${daa[${dl}]}" ] ; then
      daa["${dl}"]=1
      du+=( "${dl}" )
    fi
  done
  local ne=${#du[@]}
  local le=$((${#du[@]}-1))
  for i in $(seq 0 ${ne}) ; do
    echo -n "${du[${i}]}"
    if [ ${i} -lt ${le} ] ; then
      echo -n "${dsep}"
    fi
  done
  echo
}

remove_dupes.sh

#!/bin/bash

#
# heavy duty bs
# why not uniq?
# because
#

function remove_dupes() {
  local dstring="${1}"
  local dsep="${2}"
  local -A daa
  local -a du
  for dl in $(echo "${dstring}" | tr "${dsep}" "\n") ; do
    daa[${dl}]=0
  done
  for dl in ${!daa[@]} ; do
    if [ "${daa[${dl}]}" -eq 0 ] ; then
      daa["${dl}"]=1
      du+=( "${dl}" )
    fi
  done
  local ne=${#du[@]}
  local le=$((${#du[@]}-1))
  for i in $(seq 0 ${ne}) ; do
    echo -n "${du[${i}]}"
    if [ ${i} -lt ${le} ] ; then
      echo -n "${dsep}"
    fi
  done
  echo
}