configure

#!/bin/bash

if [ "$1" = "-h" ] || [ "$1" = "--help" ]; then
  echo "Configuration Options:"
  echo "  -h, --help      Display this help and exit"
  echo -e "\nRemove Standard Features:"
  echo "  --no-checksum   Remove the checksum function"
  echo "  --no-compress   Remove the compress function"
  echo "  --no-execute    Remove the execute function"
  echo "  --no-random     Remove the random function"
  echo "  --no-readline   Remove console editing and history"
  echo "  --no-socket     Remove the socket port"
  echo -e "\nAdd Optional Features:"
  echo "  --assemble      Enable assemble function (requires libjit)"
  echo "  --bzip2         Use bzip2 for compress instead of zlib"
  echo "  --gnu-readline  Use GNU Readline for console editing and history"
  echo "  --static        Build static library and stand-alone executable"
  echo "  --timecode      Enable timecode! datatype"
  echo "  --thread        Enable thread functions"
  echo -e "\nSet Default Limits:"
  echo "  --atom-limit <N>  Maximum number of atoms"
  echo "  --atom-names <N>  Atom names buffer size"
  exit
fi


CFG_ASSEM=0
CFG_CHECKSUM=1
CFG_COMPRESS=zlib
CFG_EXECUTE=1
CFG_RANDOM=1
CFG_READLINE=linenoise
CFG_SOCKET=1
CFG_STATIC=0
CFG_TIMECODE=0
CFG_THREAD=0
CFG_ATOM_LIMIT=none
CFG_ATOM_NAMES=none

while [ "$1" != "" ]; do
  case $1 in
    --no-checksum)
      CFG_CHECKSUM=0 ;;
    --no-compress)
      CFG_COMPRESS=0 ;;
    --no-execute)
      CFG_EXECUTE=0 ;;
    --no-random)
      CFG_RANDOM=0 ;;
    --no-readline)
      CFG_READLINE=0 ;;
    --no-socket)
      CFG_SOCKET=0 ;;
    --assemble)
      CFG_ASSEM=1 ;;
    --bzip2)
      CFG_COMPRESS=bzip2 ;;
    --gnu-readline)
      CFG_READLINE=gnu ;;
    --static)
      CFG_STATIC=1 ;;
    --timecode)
      CFG_TIMECODE=1 ;;
    --thread)
      CFG_THREAD=1 ;;
    --atom-limit)
      shift
      CFG_ATOM_LIMIT=$1 ;;
    --atom-names)
      shift
      CFG_ATOM_NAMES=$1 ;;
    *)
      echo "Invalid option $opt"
      exit 1
      ;;
  esac
  shift
done


echo "Generating config.opt & project.config"
rm -f config.opt project.config

function m2-word {
if [ $2 = 0 ]; then
  echo "$1: false" >> project.config
else
  echo "$1: '$2" >> project.config
  case $2 in
    gnu)
	  echo -n " -DCONFIG_READLINE" >> config.opt ;;
    linenoise)
	  echo -n " -DCONFIG_LINENOISE" >> config.opt ;;
    zlib)
	  echo -n " -DCONFIG_COMPRESS=1" >> config.opt ;;
    bzip2)
	  echo -n " -DCONFIG_COMPRESS=2" >> config.opt ;;
  esac
fi
}
function m2-logic {
if [ $2 = 0 ]; then
  echo "$1: false" >> project.config
else
  echo "$1: true" >> project.config
  echo -n " -DCONFIG_$(tr '[:lower:]' '[:upper:]' <<< $1)" >> config.opt
fi
}
function m2-int {
if [ $2 != 'none' ]; then
  echo "$1: $2" >> project.config
  echo -n " -DCONFIG_$(tr '[:lower:]' '[:upper:]' <<< $1)=$2" >> config.opt
fi
}

m2-logic "assemble" $CFG_ASSEM
m2-logic "checksum" $CFG_CHECKSUM
m2-word  "compress" $CFG_COMPRESS
m2-logic "hashmap"  1
m2-logic "execute"  $CFG_EXECUTE
m2-logic "random"   $CFG_RANDOM
m2-word  "readline" $CFG_READLINE
m2-logic "socket"   $CFG_SOCKET
m2-logic "static"   $CFG_STATIC
m2-logic "timecode" $CFG_TIMECODE
m2-logic "thread"   $CFG_THREAD
m2-int   "atom-limit" $CFG_ATOM_LIMIT
m2-int   "atom-names" $CFG_ATOM_NAMES