#! /bin/sh
# Validate gperf's operation on a given input file.
# Usage: validate languages input.gperf [more gperf options]
# Uses the environment variables GPERF, CC, CFLAGS, CXX, CXXFLAGS.
# Supposes gcc and g++.

# Exit on error
set -e

verbose () {
  echo "$@"
  "$@"
}

languages=$1
shift

# On old systems, it's worth trying gcc -traditional.
# On glibc-2.1 systems, gcc -traditional doesn't work any more.
use_traditional=false

for lang in `echo $languages | sed -e 's/,/ /g'`; do
  case "$lang" in
    KR-C )
      echo "${GPERF} -I -L KR-C $@ > valitest.c"
      ${GPERF} -I -L KR-C "$@" > valitest.c
      grep -n ' const ' valitest.c /dev/null && exit 1
      if test $use_traditional = true; then
        verbose ${CC} ${CFLAGS} -traditional valitest.c -o valitest
        ./valitest
      fi
      verbose ${CC} ${CFLAGS} -ansi -pedantic valitest.c -o valitest
      ./valitest
      ;;
    C )
      echo "${GPERF} -I -L C $@ > valitest.c"
      ${GPERF} -I -L C "$@" > valitest.c
      if test $use_traditional = true; then
        verbose ${CC} ${CFLAGS} -traditional -Dconst= valitest.c -o valitest
        ./valitest
      fi
      verbose ${CC} ${CFLAGS} -ansi -pedantic -pedantic-errors valitest.c -o valitest
      ./valitest
      ;;
    ANSI-C )
      echo "${GPERF} -I -L ANSI-C $@ > valitest.c"
      ${GPERF} -I -L ANSI-C "$@" > valitest.c
      verbose ${CC} ${CFLAGS} -ansi -pedantic -pedantic-errors valitest.c -o valitest
      ./valitest
      verbose ${CXX} ${CXXFLAGS} -ansi -pedantic -pedantic-errors valitest.c -o valitest
      ./valitest
      ;;
    "C++" )
      echo "${GPERF} -I -L C++ $@ > valitest.c"
      ${GPERF} -I -L C++ "$@" > valitest.c
      verbose ${CXX} ${CXXFLAGS} -ansi -pedantic -pedantic-errors -DCPLUSPLUS_TEST valitest.c -o valitest
      ./valitest
      ;;
  esac
done

exit 0
