#! /bin/sh

# Time-stamp: <2006-04-07 13:05:52 feeley>

# Utility to change the version of Gambit attached to a source file.
#
# Usage: changev 40062 40063 file1 file2

OLDVERSION=$1
NEWVERSION=$2
TEMPFILE=/tmp/changev.$$

OLDMAJORVERSION=`eval expr $OLDVERSION / 100000`
OLDMINORVERSION=`eval expr $OLDVERSION % 100000 / 1000`
if [ `eval expr $OLDVERSION % 1000` -eq 0 ]
then
  OLDREVISIONVERSION=""
else
  OLDREVISIONVERSION=".`eval expr $OLDVERSION % 1000`"
fi
OLDVERSIONSTRING=$OLDMAJORVERSION.$OLDMINORVERSION$OLDREVISIONVERSION
OLDDISTVERSION="gambc$OLDVERSION"

NEWMAJORVERSION=`eval expr $NEWVERSION / 100000`
NEWMINORVERSION=`eval expr $NEWVERSION % 100000 / 1000`
if [ `eval expr $NEWVERSION % 1000` -eq 0 ]
then
  NEWREVISIONVERSION=""
else
  NEWREVISIONVERSION=".`eval expr $NEWVERSION % 1000`"
fi
NEWVERSIONSTRING=$NEWMAJORVERSION.$NEWMINORVERSION$NEWREVISIONVERSION
NEWDISTVERSION="gambc$NEWVERSION"

while [ -n "$3" ]
do

  FILE=$3

  sed -e "s/#define ___VERSION $OLDVERSION/#define ___VERSION $NEWVERSION/g" -e "s/Gambit-C $OLDVERSIONSTRING/Gambit-C $NEWVERSIONSTRING/g" -e "s/Gambit Version $OLDVERSIONSTRING/Gambit Version $NEWVERSIONSTRING/g" -e "s/Gambit-C,$OLDVERSION/Gambit-C,$NEWVERSION/g" -e "s/$OLDDISTVERSION/$NEWDISTVERSION/g" -e "s/(define (system-version) $OLDVERSION)/(define (system-version) $NEWVERSION)/g" -e "s/PACKAGE_VERSION=\'$OLDVERSION\'/PACKAGE_VERSION=\'$NEWVERSION\'/g" -e "s/PACKAGE_STRING=\'Gambit-C $OLDVERSION\'/PACKAGE_STRING=\'Gambit-C $NEWVERSION\'/g" -e "s/Gambit-C $OLDVERSION/Gambit-C $NEWVERSION/g" -e "s/Gambit-C configure $OLDVERSION/Gambit-C configure $NEWVERSION/g" -e "s/Gambit-C \$as_me $OLDVERSION/Gambit-C \$as_me $NEWVERSION/g" -e "s/Gambit-C config.status $OLDVERSION/Gambit-C config.status $NEWVERSION/g" $FILE > $TEMPFILE

  diff -q $FILE $TEMPFILE > /dev/null

  if [ $? -eq 1 ]
  then
    echo =================================================== $FILE
    diff $FILE $TEMPFILE
    if [ -x $FILE ]
    then
      chmod +x $TEMPFILE
    fi
    mv $TEMPFILE $FILE
    #rm -f $TEMPFILE
  else
    rm -f $TEMPFILE
  fi

  shift

done