#!/usr/bin/env bash

# Licensed to the Apache Software Foundation (ASF) under one or more
# contributor license agreements.  See the NOTICE file distributed with
# this work for additional information regarding copyright ownership.
# The ASF licenses this file to You under the Apache License, Version 2.0
# (the "License"); you may not use this file except in compliance with
# the License.  You may obtain a copy of the License at
#
#     http://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS,
# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
# See the License for the specific language governing permissions and
# limitations under the License.

if [[ -z $2 ]]; then
  echo "Usage: bleu output reference"
  exit 1
fi

output=$1
refs=$2

format=plain
grep "|||" $output > /dev/null
if [[ $? -eq 0 ]]; then
  format=nbest
fi

numrefs=$(ls $refs* | wc -l)
verbose=0

JOSHUA=$(dirname $0)/..
java -cp $JOSHUA/target/joshua-*-jar-with-dependencies.jar \
    -Dfile.encoding=utf8 -Djava.library.path=$JOSHUA/lib \
    -Xmx256m -Xms256m \
    org.apache.joshua.util.JoshuaEval -cand $output -format $format -ref $refs -rps $numrefs -m BLEU 4 closest -v 0