#!/bin/bash
# Parser builder

# --------------------------------------------------------

function grammar
{
    FILE="$1"
    N="$2"
    NAME="$(echo $N | tr '[:lower:]' '[:upper:]')"
    DIR1="$(echo $N | tr '[:upper:]' '[:lower:]')"
    
    DIR="../src/com/hp/hpl/jena/query/parser/$DIR1"
    echo "---- Process grammar"
    javacc -OUTPUT_DIRECTORY=$DIR "${FILE}"
    RC=$?

    [ "$RC" = 0 ] || return

##     echo "---- Create HTML"
##     jjdoc -OUTPUT_FILE=${FILE%%.jj}.html "${FILE}"
    echo "---- Create text form"
    jjdoc -TEXT=true -OUTPUT_FILE=${FILE%%.jj}.txt "${FILE}"

 # Fix unnecessary imports
    echo "---- Fixing unused imports in ${NAME}TokenManager ..."

    F="$DIR/${NAME}ParserTokenManager.java"

    sed -e 's/import .*//' < $F > F
    mv F $F
    echo "---- Done"
}

# --------------------------------------------------------

function rdqlGrammar
{
    # This one uses the old RDQL expression code via JJTree
    (
	DIR="../src/com/hp/hpl/jena/query/parser/rdql"
	rm -f brql-rdql.jj
	jjtree -OUTPUT_DIRECTORY="$DIR" brql-rdql.jjt
	RC=$?
	mv $DIR/brql-rdql.jj .
	#echo "RC: $RC"
	if [ "$RC" = "0" ]
	    then
	    javacc -OUTPUT_DIRECTORY=../src/com/hp/hpl/jena/query/parser/rdql brql-rdql.jj
	    rm brql-rdql.jj
	fi
    )
}

# --------------------------------------------------------

if [ $# == 0 ]
then
    echo "Usage: grammar [brql|rdql|arq|sparql]" 1>&2
    exit 1
    fi

for G in "$@"
do
  case "$G" in
##       sparql|sparql.jj)
##           # The parser that is used for query execution
##           grammar sparql.jj SPARQL
## 	  ;;
      sparql|sparql.jj)
          # The parser that is exactly the working group grammar.
          grammar sparql.jj SPARQL
          ;;
      rdql|brql) echo "Tread carefully" 1>&2
          rdqlGrammar
          ;;
      arq|arq.jj)
          grammar arq.jj ARQ
          ;;

      all)  grammar sparql.jj SPARQL
            grammar arq.jj ARQ
	    rdqlGrammar
	    ;;
      *)      echo "**** Unknown grammar: $G" 1>&2
            ;;
    esac
done