lib.godev

#!bin/bash

export GODEV_NAMESPACES=""

function __godev_error() {
  local p_msg=$*;
  echo >&2 "$(tput setaf 1)godev error$(tput sgr0): ${p_msg}"
}

function __godev_warning() {
  local p_msg=$*;
  echo "$(tput setaf 3)godev warning$(tput sgr0): ${p_msg}"
}

function godev_add_namespace() {
  local l_host=$1; shift
  local l_depth=$1; shift

  test -z "${l_host}" && {
    __godev_error "invalid empty namepsace host"
    return 1
  }

  if [[ ! "${l_depth}" =~ ^-?[0-9]+$ ]]; then
      __godev_error "invalid empty namepsace depth, must be valid integer"
      return 1
  fi

  strlist_add GODEV_NAMESPACES ${l_host} ${l_depth}
}

function godev() {
  local l_name=$1; shift
  local l_gopath="${GOPATH}"
  local l_items=()
  local l_spaces

  test -z "${l_gopath}" && {
    __godev_error "GOPATH not set" 2>&1
    return 1
  }

  # load comma-delimited list in bash array
  IFS=';' read -r -a l_spaces <<< "${GODEV_NAMESPACES}"

  # search through registered namespaces
  local c_idx=0
  while [ ${c_idx} -lt ${#l_spaces[@]} ]; do
    local l_host=${l_spaces[${c_idx}]}
    c_idx=$((c_idx + 1))
    local l_depth=${l_spaces[${c_idx}]}
    c_idx=$((c_idx + 1))
    l_items+=($(find "${l_gopath}/src/${l_host}" -maxdepth ${l_depth} -name "*${l_name}*"))
  done

  if [ ${#l_items[@]} -eq 0 ]; then
      __godev_warning "unable to find entity '${l_name}'"
      return 1
  elif [ ${#l_items[@]} -gt 1 ]; then
      __godev_warning "multiple results found"
      local c_val
      for c_val in "${l_items[@]}"; do
        echo "-> ${c_val}"
      done
      return 1
  else
    cd "${l_items[0]}" || return 1
  fi
}

__godev_complete() {
  local l_spaces
  # shellcheck disable=SC2034
  local cur prev words cword split
  _init_completion -s || return

  IFS=';' read -r -a l_spaces <<< "${GODEV_NAMESPACES}"

  if [ ! -z "${GOPATH}" ]; then
      local c_idx=0
      while [ ${c_idx} -lt ${#l_spaces[@]} ]; do
        local l_host=${l_spaces[${c_idx}]}
        c_idx=$((c_idx + 1))
        local l_depth=${l_spaces[${c_idx}]}
        c_idx=$((c_idx + 1))
        local l_dirs=$(find "${GOPATH}/src/${l_host}" -maxdepth ${l_depth} -type d -print0 | xargs -0 -n1 basename)
        local IFS=$'\n'
        COMPREPLY+=($(compgen -W "${l_dirs}" -- ${cur}))
      done
  else
    echo "(gopath-unset)"
  fi
}

complete -F __godev_complete godev