#!/bin/sh

set -e

if [ $# -lt 3 ] || [ $# -gt 5 ]; then
  echo >&2 "Usage: $0 <major> <minor> <patchlevel> [ <suffix> [ - ] ]"
  echo >&2 "(use 5 arguments to produce patches for releases)"
  exit 1
fi

# Examples:
#   ./update-version 2 3 0 dev
#   ./update-version 2 3 0 rc1
#   ./update-version 2 3 0
#   ./update-version 2 3 0 p1 -

vers="$1.$2.$3"
full="$vers${4:+-$4}"
echo $full > VERSION
perl -pi -e "s/(?<=#define MPFR_VERSION_MAJOR ).*/$1/; \
             s/(?<=#define MPFR_VERSION_MINOR ).*/$2/; \
             s/(?<=#define MPFR_VERSION_PATCHLEVEL ).*/$3/; \
             s/(?<=#define MPFR_VERSION_STRING ).*/\"$full\"/" mpfr.h
perl -pi -e "s/(?<=return \").*\"/$full\"/" version.c

if [ $# -lt 5 ]; then
  # Up to 4 arguments...
  u="http://www.mpfr.org/mpfr-"
  perl -pi -e "s/(?<=\@set VERSION ).*/$full/" mpfr.texi
  perl -pi -e \
    "s,MPFR [\d.]+( web page \@url{$u)[\d.]+/,MPFR $vers\${1}$vers/," mpfr.texi
  perl -pi -e "s/(?<=AC_INIT).*/([MPFR],[$full])/" configure.in
  perl -pi -e "s,(?<=$u).*?/,$vers/," INSTALL
fi

# If there is a suffix, disable one of the tests in tests/tversion.c
if [ $# -ge 4 ]; then
  tvers=0
else
  tvers=1
fi
perl -pi -e "s/(?<=#if ).*/$tvers/" tests/tversion.c

echo "MPFR version successfully updated."
echo "Don't forget to update MPFR libtool version in Makefile.am."