#!/bin/sh
# $Id: buildstamp,v 1.8 2005/03/07 21:23:49 legendre Exp $
# create/update build version identification voucher file

USAGE="usage: buildstamp [-s SUITE_NAME] [-v RELEASE_ID] [-win] TARGET"
SUITE=Paradyn
RELEASE=v4.2
RUNNING_ON_WIN=0

while [ ! -z "$1" ]
do
  case "$1" in
    -s)
        # set suite name
        SUITE=$2
        shift
        ;;
    -v)
        # set release identifier
        RELEASE=v$2
        shift
        ;;
    -[0-9]*)
        # got detached build number
        RELEASE=$RELEASE$1
        ;;
    -win)
        # We're runing on Windows
        RUNNING_ON_WIN=1
        ;;
    -*)
        echo "Unrecognized flag: $1"
        break
        ;;
    *)
        # first non-flag argument is the target (others silently ignored!)
        TARGET=$1
        break
        ;;
  esac
  shift
done

# common bail-point for unknown flags and undefined target
if [ -z "$TARGET" ]; then
    echo $USAGE
    exit 1
fi

# ensure TARGET is specified
set ${TARGET:?}
V_FILE=V_$TARGET.c

# clean-up suite identifier
#SUITE=`echo X$SUITE | sed -n -e 's/^X-s//p'`
# clean-up release identifier (ensuring that it starts with a single "v")
#RELEASE=`echo X$RELEASE | sed -n -e 's/^X-v*/v/p'`

if [ -f $V_FILE ]; then
  n=0
  ident=`grep '\$'$SUITE $V_FILE`
  for i in $ident
  do
    n=`expr $n + 1`
    case $n in
    2)
      if [ "$RELEASE" != "$i" ]; then
        #echo "Warning: change of release from $i to $RELEASE"
        RESET=true
      fi
      ;;
    3)
      if [ "$TARGET" != "$i" ]; then
        echo "Warning: change of target from $i to $TARGET"
      fi
      ;;
    4)
      # extract previous build number
      # awk doesn't exist on our windows machine, also it appears that
      # we're not currently using this option but are specifying the
      # build number on the release variable, so I'm commenting this out
      # BUILD=`awk '{for (i=1;i<=NF;i++) if ($i~/#[0-9]/) \
      #             print int(substr($i,2)+1)}' $V_FILE`
      BUILD=0
      ;;
    esac
  done
fi

if [ -z "$RESET" ]; then
    if [ -z "$BUILD" ]; then
        BUILD=0
        echo "$SUITE build voucher being constructed for $TARGET: BUILD#$BUILD"
    fi
else
    BUILD=0
#   echo "$SUITE build voucher being reset for $TARGET: BUILD#$BUILD"
fi

# collect additional build voucher information
DATE=`date '+%Y/%m/%d %H:%M'`
if [ $RUNNING_ON_WIN = "1" ]; then
    USER=`logname`
else
    USER=`whoami`
fi

HOST=`hostname | tr 'A-Z' 'a-z'`
# remap Paradyn/DynInst account addresses
if [ "$USER" = "paradyn" ]; then
    if [ "$SUITE" = "DynInst" ]; then
        USER="dyninst"
        HOST="cs.umd.edu"
    else
        HOST="cs.wisc.edu"
    fi
fi

cat << EOF > $V_FILE
/* Automated build version identification */
extern const char V_$TARGET[];
       const char V_$TARGET[] =
    "\$$SUITE: $RELEASE $TARGET #$BUILD $DATE $USER@$HOST \$";
EOF

echo "     \$$SUITE: $RELEASE $TARGET #$BUILD $DATE $USER@$HOST \$"

exit 0