mycmd

#!/usr/bin/env bash

# mycmd: command wrapper for functions and executables

PREFIX="$(basename "$0")-"

get_commands () {
  local array
  local cmd_cand=()

  # get functions
  IFS=' ' read -ra array <<< "$(declare -F |grep "declare -f $PREFIX"|cut -d' ' -f3 | tr $'\n' ' ')"
  cmd_cand=("${cmd_cand[@]}" "${array[@]}")

  # get executables
  local pathes
  IFS=':' read -ra pathes <<< "$PATH"
  local p
  local f
  local cmd
  for p in "${pathes[@]}";do
    if [ ! -d "$p" ];then
      continue
    fi
    while read -r f;do
      if [ -x "$f" ];then
        cmd="${f##*/}"
        cmd_cand+=("$cmd")
      fi
    done < <(find  "$p" -maxdepth 1 -name  "${PREFIX}*")
  done

  local commands=()
  for cmd in "${cmd_cand[@]}";do
    if [ "$cmd" = "" ];then
      continue
    fi
    c=${cmd/$PREFIX/}
    commands+=("$c")
  done
  echo "${commands[*]}"
}

mycmd-help () {
  echo "Usage: mycmd <sub-commands>"
  echo "Sub commands: $(get_commands)"
}

mycmd-commands () {
  get_commands
}

mycmd-test () {
  echo "This is mycmd-test"
  for arg in "$@";do
    echo "arg: $arg"
  done
}

if [ $# -eq 0 ];then
  mycmd-help
  exit
fi

cmd="$1"
shift
if [[ "$cmd" = "commands" ]];then
  mycmd-commands
  exit
fi

if ! type -t "$PREFIX$cmd" >&/dev/null;then
  echo "Unknown command: $cmd"
  mycmd-help
  exit 1
fi
"$PREFIX$cmd" "$@"