#!/bin/sh

#
#  This file is part of the Yices SMT Solver.
#  Copyright (C) 2017 SRI International.
# 
#  Yices is free software: you can redistribute it and/or modify
#  it under the terms of the GNU General Public License as published by
#  the Free Software Foundation, either version 3 of the License, or
#  (at your option) any later version.
# 
#  Yices is distributed in the hope that it will be useful,
#  but WITHOUT ANY WARRANTY; without even the implied warranty of
#  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
#  GNU General Public License for more details.
# 
#  You should have received a copy of the GNU General Public License
#  along with Yices.  If not, see <http://www.gnu.org/licenses/>.
#

#
# Script to build yices_version.c from yices_version_template.txt
#
# Usage:
#  ./make_source_version <template> <result> <version> <mode> <arch>
# where
#   <template> = source template    (normally src/api/yices_version_termplate.txt)
#   <result>   = version file       (normally src/api/yices_version.c)
#   <version>  = version number     (e.g., 2.2.2)
#   <mode>     = compilation mode   (release or debug)
#   <arch>     = build architecture (e.g., x86_64-unknown-linux-gnu)
#
#

usage="Usage: $0 <template> <result> <version> <mode> <arch>"

if test $# -ne 5 ; then
  echo "$usage"
  exit 2
fi

template=$1
result=$2
version=$3
mode=$4
arch=$5


#
# Check that template is readable
#
test -f $template || { echo "Can't open $template" ; exit 1 ; }


#
# Temporary file
#
os_name=`uname 2>/dev/null` || os_name=unknown

case "$os_name" in
  *Darwin* )
     mktemp_cmd="/usr/bin/mktemp -t out"
  ;;

  * )
     mktemp_cmd=mktemp
  ;;
esac

tempfile=`$mktemp_cmd` || { echo "Can't create temporary file" ; exit 1 ; }


#
# Date and git commit
#
now=`date +"%Y-%m-%d"`
rev=`git rev-parse HEAD 2>/dev/null || echo "unknown"`


#
# Create the revision-file in temp
#
sed -e "s/YICES_VERSION/$version/g" -e "s/YICES_COMPILATION_DATE/$now/g" \
    -e "s/REVISION/$rev/g" -e "s/YICES_ARCH/$arch/g" -e "s/YICES_BUILD_MODE/$mode/g" \
    $template > $tempfile

#
# Copy tempfile as result if they differ
#
diff -q -N $tempfile $result > /dev/null || cp $tempfile $result

rm -f $tempfile