#!/bin/sh

# ${R_HOME}/bin/check for checking installed add-on packages

USAGE_MSG="Usage: R CMD check [options] [-l lib] pkg_1 ... pkg_n"
VERSION="0.2-1"

OPTS=
PKGS=
CLEAN=false
DEBUG=false
REBUILD=true
START_DIR=`pwd`
lib=${R_HOME}/library

while test -n "${1}"; do
  case ${1} in
    -h|--help|-\?)
      echo "${USAGE_MSG}"; exit 0 ;;
    -V|--version)
      echo "${VERSION}"; exit 0 ;;
    -c|--clean)
      CLEAN=true ;;
    --debug)
      DEBUG=true; OPTS="${OPTS} --debug" ;;
    --no-rebuild)
      REBUILD=false ;;
    -l)
      lib=${2}; shift;
      R_LIBS="${lib}:${R_LIBS:-${RLIBS}}";
      ;;
    *)
      PKGS="${PKGS} ${1}" ;;
  esac
  shift
done

if ${DEBUG}; then set -x; fi

if test -z "${PKGS}"; then
  echo "${USAGE_MSG}"
  exit 1
fi

if test -d ${lib}; then
  lib=`cd ${lib}; pwd`
else
  echo "ERROR: library directory \`${lib}' does not exist"
  exit 2
fi

for pkg in ${PKGS}; do
  cd ${START_DIR}
  USE_MAN=false

  if ${REBUILD}; then
    if test -d ${pkg}/man -a -w ${lib}/`basename ${pkg}`; then
      USE_MAN=true
      cd ${pkg}
      pkg=`basename ${pkg}`
      rm -rf ${lib}/${pkg}/R-ex
    fi
  fi

  echo "Checking package \`${pkg}' ..."

  if test \! -d ${lib}/${pkg}; then
    echo "WARNING: package \`${pkg}' not installed ... skipping"
    break
  fi

  if ${USE_MAN}; then
    ${R_HOME}/bin/build-help ${OPTS} --example ../${pkg} ${lib}
    CHECK_DIR=check
  else
    CHECK_DIR=check-${pkg}
  fi

  test -d ${CHECK_DIR} || mkdir ${CHECK_DIR}
  cd ${CHECK_DIR}

  echo " Massaging examples into \`${pkg}-Ex.R' ..."
  ${R_HOME}/bin/massage-Examples ${pkg} ${lib}/${pkg}/R-ex/*.R \
    > ${pkg}-Ex.R
  echo " Running examples in package \`${pkg}' ..."
  R_LIBS=${R_LIBS} ${R_HOME}/bin/R --vanilla < ${pkg}-Ex.R \
    > ${pkg}-Ex.Rout
  if test ${?} -eq 0; then
    echo " OK"
  else
    echo " ERROR" && exit 1
  fi
  if ${CLEAN}; then
    cd .. && rm -rf ${CHECK_DIR}
  else
    echo " Results of \`check' are available in directory ${pkg}/${CHECK_DIR}"
  fi

done