die () {
    message="$1"
    echo "$tool -> .local_tool_wrapper: $message Exiting ..."
    exit 1 
}

############################ main ##############################

tool=`basename $0`
ARGV="$*"
TRE_PROJECT=$DV_ROOT

if [ -z "$TRE_PROJECT" ]; then
    die "TRE_PROJECT not defined"
fi

TRE_ROOT=$TRE_PROJECT/tools
TOOL_ROOT=$TRE_PROJECT/tools/perlmod/$tool

### Verify TRE_SEARCH and TRE_ENTRY are defined and non-null

if [ -z "$TRE_SEARCH" ]; then
    die "TRE_SEARCH not defined"
fi
if [ -z "$TRE_ENTRY" ]; then
    die "TRE_ENTRY not defined"
fi

### Get version, based on tool invoked, and $TRE_ENTRY

version=`configsrch $tool $TRE_ENTRY`
if [ $? != 0 ] ; then
    die "configsrch returned error code!"
fi

###  Verify configsrch delivered a non-null version

if [ -z "$version" ]; then
    die "No version set by configsrch"
fi

### Assemble directory-oriented executable ...
### (eliminate the extra layer of shell redirection...)

   exe=$TOOL_ROOT/$version/bin/$tool
   if [ -x $exe ]; then
      exec $exe "$@"
   fi
   

###  Assemble do-file name. If it's there, execute and test status.

   exe=$TRE_ROOT/$tool,$version.do
   if [ -x $exe ]; then
       $exe
       dostat=$?
       if [ $dostat != 0 ] ; then
	   die "Error return from do file"
       fi
   fi
   

   exe=$TRE_ROOT/$tool,$version
   if [ -x $exe ]; then
       exec $exe "$@"
   else
       die "executable $exe not found!"
   fi


### If none of the above executable patterns hit, then die with errors...

   echo "FATAL:  Couldn't find any executable form:"
   echo "FATAL:      $TOOL_ROOT/$version/bin/$tool"
   echo "FATAL:      $TRE_ROOT/$tool,$version.do"
   echo "FATAL:      $TRE_ROOT/$tool,$version"
   die  "FATAL:  $tool executable not found!"