#!/bin/sh
# $Id: make-vg.in 7188 2012-11-21 07:43:51Z cher $
# Copyright (c) 2012 Alexander Chernov <cher@ejudge.ru>

# Environment variables:
#  EJ_MAKE_COMMAND
#  EJ_MAKE_ARGS
#  EJ_PROGRAM_DIR
#  EJ_PROGRAM_NAME

srcfile="$1"
dstfile="$2"

LANG_CONFIG_DIR="/home/judges/compile/conf/lang.d"
[ "${EJUDGE_LANG_CONFIG}" = "" ] && EJUDGE_LANG_CONFIG="${LANG_CONFIG_DIR}/make-vg.cfg"

if [ -f "${EJUDGE_LANG_CONFIG}" ]
then
  . "${EJUDGE_LANG_CONFIG}"
else
  version="generic"
  MAKERUN="make"
fi

[ x"${EJ_MAKE_COMMAND}" != x ] || EJ_MAKE_COMMAND="make"
[ x"${EJ_PROGRAM_DIR}" != x ] || EJ_PROGRAM_DIR="solution"
[ x"${EJ_PROGRAM_NAME}" != x ] || EJ_PROGRAM_NAME="solution"

# 1. detect the type of the archive
#  7z:  "7-zip archive data"
#  tar: "POSIX tar archive (GNU)"
#  bz2: "bzip2 compressed data"
#  gz:  "gzip compressed data"
if [ ! -f "${srcfile}" ]
then
  echo "No source file ${srcfile}" 1>&2
  exit 1
fi

t=`file "${srcfile}"`
case "$t" in
    *7-zip\ archive\ data*)
        cmd="7z x";;
    *POSIX\ tar\ archive*)
        cmd="tar xf";;
    *bzip2\ compressed\ data*)
        cmd="tar xfj";;
    *gzip\ compressed\ data*)
        cmd="tar xfz";;
    *)
        echo "Unsupported file type ${t}" 1>&2
        exit 1;;
esac
if [ x"${cmd}" = x ]
then
    echo "Unsupported file type ${t}" 1>&2
    exit 1
fi

# 2. unpack the archive
${cmd} "${srcfile}"
if [ $? != 0 ]
then
    echo "Failed to uncompress the archive" 1>&2
    exit 1
fi
if [ ! -d "${EJ_PROGRAM_DIR}" ]
then
    echo "The archive does not contain directory ${EJ_PROGRAM_DIR}" 1>&2
    exit 1
fi

# 3. execute
curdir=`pwd`
if [ x"${curdir}" = x ]
then
    echo "Invalid current directory" 1>&2
    exit 1
fi

if ! cd "${EJ_PROGRAM_DIR}"
then
    echo "Failed to change the current directory to ${EJ_PROGRAM_DIR}" 1>&2
    exit 1
fi

# touch all files to quell "Modification time in future" warning
touch *

# remove the expected executable file (just in case)
rm -f "${EJ_PROGRAM_NAME}"

# remove all working file
${EJ_MAKE_COMMAND} clean
if [ $? != 0 ]
then
    echo "Makefile does not have 'clean' rule or it failed" 1>&2
    exit 1
fi

if [ "${EJ_MAKE_CFLAGS}" != "" -a "${EJ_MAKE_CXXFLAGS}" != "" ]
then
    ${EJ_MAKE_COMMAND} CFLAGS="${EJ_MAKE_CFLAGS}" CXXFLAGS="${EJ_MAKE_CXXFLAGS}"
elif [ "${EJ_MAKE_CXXFLAGS}" != "" ]
then
    ${EJ_MAKE_COMMAND} CXXFLAGS="${EJ_MAKE_CXXFLAGS}"
elif [ "${EJ_MAKE_CFLAGS}" != "" ]
then
    ${EJ_MAKE_COMMAND} CFLAGS="${EJ_MAKE_CFLAGS}"
else
    ${EJ_MAKE_COMMAND}
fi

if [ $? != 0 ]
then
    echo "Build failed" 1>&2
    exit 1
fi

if [ ! -x "${EJ_PROGRAM_NAME}" ]
then
    echo "The executable file is not created or non-executable" 1>&2
    exit 1
fi

# 4. copy the result
cd "${curdir}"
if [ $? != 0 ]
then
    echo "Invalid current directory" 1>&2
    exit 1
fi

mv "${EJ_PROGRAM_DIR}"/"${EJ_PROGRAM_NAME}" "${dstfile}"
if [ $? != 0 ]
then
    echo "Failed to move the executable file" 1>&2
    exit 1
fi

exit 0