#!/bin/sh
# $Id: gcj-version.in 5550 2009-02-19 18:14:43Z cher $
# Copyright (c) 2005-2008 Alexander Chernov <cher@ejudge.ru>

LANG_CONFIG_DIR="/home/judges/compile/conf/lang.d"

common_config() {
  echo 'long_name="GNU Java"'
  echo 'src_sfx=".java"'
  echo 'arch="linux-shared"'
  echo 'insecure=1'
}

failure() {
  rm -f conftest*
  echo 'version='
  echo 'arg="'"${arg}"'"'
  common_config
  echo 'GCJRUN=false'
  echo 'GCJDIR='
  [ "${verbose}" = 1 ] && echo "no" >&2
  exit 1
}

unset LANG
unset LC_ALL
unset LC_MESSAGES
unset LANGUAGE

if [ x"$1" = x-v ]
then
  verbose=1
  shift
fi

# recheck the language
if [ x"$1" = x-r ]
then
  arg="$2"
  [ x"$2" != x ] && GCJRUN="$2"
  [ "${GCJRUN}" = "" ] && GCJRUN="gcj"

  [ "${verbose}" = 1 ] && echo -n "checking whether GNU Java (GCJ) is available..." >&2
  "${GCJRUN}" -v >/dev/null 2>/dev/null || failure
  version=`"${GCJRUN}" --version | grep gcj | gawk '{ print $3; }'` || failure
  [ "${version}" != "" ] || failure
cat > conftest.java <<EOF
class Main
{
  public static void main(String args[])
  {
    System.exit(0);
  }
}
EOF
  "${GCJRUN}" --main=Main conftest.java -o conftest 2>/dev/null >/dev/null || failure
  [ -x conftest ] || failure
  ./conftest 2>/dev/null >/dev/null || failure

  rm -f ./conftest*
  GCJDIR=`dirname "${GCJRUN}"`
  [ "${GCJDIR}" = . ] && GCJDIR=""
  echo 'version="'"${version}"'"'
  echo 'arg="'"${arg}"'"'
  common_config
  echo 'GCJRUN="'"${GCJRUN}"'"'
  echo 'GCJDIR="'"${GCJDIR}"'"'
  [ "${verbose}" = 1 ] && echo "yes, ${GCJRUN}, ${version}" >&2
  exit 0
fi

if [ x"$1" = x-l ]
then
  echo "GNU Java compiler [http://gcc.gnu.org]"
  exit 0
fi

[ "${EJUDGE_LANG_CONFIG}" = "" ] && EJUDGE_LANG_CONFIG="${LANG_CONFIG_DIR}/gcj.cfg"

if [ -f "${EJUDGE_LANG_CONFIG}" ]
then
  . "${EJUDGE_LANG_CONFIG}"
else
  GCJRUN="gcj"
  GCJDIR=
fi

if [ x"${GCJRUN}" = x -o x"${GCJRUN}" = xfalse ]
then
  echo "This language is not supported." >&2
  exit 1
fi

if [ x"${GCJDIR}" != x ]
then
    PATH="${GCJDIR}:${PATH}"
fi

if [ x"$1" = x-p ]
then
    echo "${GCJRUN}"
    exit 0
fi
    
"${GCJRUN}" --version 2>/dev/null >/dev/null || exit 1

[ x"$1" = x-f ] && echo -n "GNU Java "

"${GCJRUN}" --version | grep gcj | gawk '{ print $3; }'
[ $? != 0 -a $? != 1 ] && exit 1
exit 0