#! /bin/bash

if [[ $1 = "" ]]; then
  echo "dscript ERROR: No command given." 1>&2
  echo "dscript SYNTAX: $0 <script> <args>" 1>&2
  exit 1
fi
if [[ ! -r $1 ]]; then
  echo "dscript ERROR: Cannot read $1." 1>&2
  exit 2
fi

cmd=$1
shift

temp_dir="/tmp/dscript.$USER.$$"
cur_dir=$(pwd)
mkdir -p $temp_dir

{
  grep  -E "^(import |extern\()" $cmd | grep -vE "^#! "
  echo "int main(char[][] argv) {"
  grep -vE "^(import |extern\()" $cmd | grep -vE "^#! "
  echo "  return 0;"
  echo "}"
} > $temp_dir/dscript_script.d

cd $temp_dir
dmd_output=$(dmd dscript_script)
rc=$?
cd $cur_dir
if [[ $rc != 0 ]]; then
  echo "$dmd_output"
  echo "dscript ERROR: Compilation failed."
  echo "DUMP OF SCRIPT:"
  cat $temp_dir/dscript_script.d
  echo "END DUMP"
  rm -r $temp_dir
  exit $rc
fi

$temp_dir/dscript_script "$@"
rc=$?

rm -r $temp_dir

exit $rc