#!/usr/bin/env bash
#
# $Id$
# Author: Markus Wenzel, TU Muenchen
#
# DESCRIPTION: build object-logic or run examples
## diagnostics
PRG="$(basename "$0")"
function usage()
{
  echo
  echo "Usage: $PRG [OPTIONS] LOGIC NAME"
  echo
  echo "  Options are:"
  echo "    -D PATH      dump generated document sources into PATH"
  echo "    -H BOOL      hide proofs and some other commands in document (default true)"
  echo "    -P PATH      set path for remote theory browsing information"
  echo "    -b           build mode (output heap image, using current dir)"
  echo "    -c BOOL      tell ML system to compress output image (default true)"
  echo "    -d FORMAT    build document as FORMAT (default false)"
  echo "    -f NAME      use ML file NAME (default ROOT.ML)"
  echo "    -g BOOL      generate session graph image for document (default false)"
  echo "    -i BOOL      generate HTML and graph browser information (default false)"
  echo "    -m MODE      add print mode for output"
  echo "    -p LEVEL     set level of detail for proof objects"
  echo "    -r           reset session path"
  echo "    -s NAME      override session NAME"
  echo "    -v BOOL      be verbose (default false)"
  echo
  echo "  Build object-logic or run examples. Also creates browsing"
  echo "  information (HTML etc.) according to settings."
  echo
  echo "  ISABELLE_USEDIR_OPTIONS=$ISABELLE_USEDIR_OPTIONS"
  echo
  exit 1
}
function fail()
{
  echo "$1" >&2
  exit 2
}
function check_bool()
{
  [ "$1" = true -o "$1" = false ] || fail "Bad boolean: \"$1\""
}
function check_number()
{
  [ -n "$1" -a -z "$(echo "$1" | tr -d '[0-9]')" ] || fail "Bad number: \"$1\""
}
## process command line
# options
DUMP=""
RPATH=""
BUILD=""
COMPRESS=true
DOCUMENT=false
HIDE=true
ROOT_FILE=ROOT.ML
DOCUMENT_GRAPH=false
INFO=false
MODES=""
RESET=false
SESSION=""
PROOFS=0
VERBOSE=false
function getoptions()
{
  OPTIND=1
  while getopts "D:H:P:bc:d:f:g:i:m:p:rs:v:" OPT
  do
    case "$OPT" in
      D)
        DUMP="$OPTARG"
        ;;
      H)
        check_bool "$OPTARG"
        HIDE="$OPTARG"
        ;;
      P)
        RPATH="$OPTARG"
        ;;
      b)
        BUILD=true
        ;;
      c)
        check_bool "$OPTARG"
        COMPRESS="$OPTARG"
        ;;
      d)
        DOCUMENT="$OPTARG"
        ;;
      f)
        ROOT_FILE="$OPTARG"
        ;;
      g)
        check_bool "$OPTARG"
        DOCUMENT_GRAPH="$OPTARG"
        ;;
      i)
        check_bool "$OPTARG"
        INFO="$OPTARG"
        ;;
      m)
        if [ -z "$MODES" ]; then
          MODES="\"$OPTARG\""
        else
          MODES="\"$OPTARG\", $MODES"
        fi
        ;;
      p)
        check_number "$OPTARG"
        PROOFS="$OPTARG"
        ;;
      r)
        RESET=true
        ;;
      s)
        SESSION="$OPTARG"
        ;;
      v)
        check_bool "$OPTARG"
        VERBOSE="$OPTARG"
        ;;
      \?)
        usage
        ;;
    esac
  done
}
getoptions $ISABELLE_USEDIR_OPTIONS
getoptions "$@"
shift $(($OPTIND - 1))
# args
[ "$#" -ne 2 ] && usage
LOGIC="$1"; shift
NAME="$1"; shift
[ -z "$SESSION" ] && SESSION=$(basename "$NAME")
## main
# prepare browser info dir
if [ "$INFO" = "true" -a ! -f "$ISABELLE_BROWSER_INFO/index.html" ]; then
  mkdir -p "$ISABELLE_BROWSER_INFO"
  cp "$ISABELLE_HOME/lib/logo/isabelle.gif" "$ISABELLE_BROWSER_INFO/isabelle.gif"
  cp "$ISABELLE_HOME/lib/html/index.html" "$ISABELLE_BROWSER_INFO/index.html"
fi
# prepare log dir
LOGDIR="$ISABELLE_OUTPUT/log"
mkdir -p "$LOGDIR"
# run isabelle
PARENT=$(basename "$LOGIC")
if [ -z "$BUILD" ]; then
  cd "$NAME" || fail "Bad session directory '$NAME'"
fi
if [ "$DOCUMENT" != false ]; then
  DOC="$DOCUMENT"
else
  DOC=""
fi
SECONDS=0
if [ -n "$BUILD" ]; then
  ITEM="$SESSION"
  echo "Building $ITEM ..." >&2
  LOG="$LOGDIR/$ITEM"
  OPT_C=""
  [ "$COMPRESS" = true ] && OPT_C="-c"
  "$ISABELLE" \
    -e "Session.use_dir \"$ROOT_FILE\" true [$MODES] $RESET $INFO \"$DOC\" $DOCUMENT_GRAPH \"$PARENT\" \"$SESSION\" \"$DUMP\" \"$RPATH\" $PROOFS $VERBOSE $HIDE;" \
    $OPT_C -q -w $LOGIC $NAME > "$LOG"
  RC="$?"
else
  ITEM=$(basename "$LOGIC")-"$SESSION"
  echo "Running $ITEM ..." >&2
  LOG="$LOGDIR/$ITEM"
  "$ISABELLE" \
    -e "Session.use_dir \"$ROOT_FILE\" false [$MODES] $RESET $INFO \"$DOC\" $DOCUMENT_GRAPH \"$PARENT\" \"$SESSION\" \"$DUMP\" \"$RPATH\" $PROOFS $VERBOSE $HIDE; quit();" \
    -r -q "$LOGIC" > "$LOG"
  RC="$?"
  cd ..
fi
ELAPSED=$("$ISABELLE_HOME/lib/scripts/showtime" "$SECONDS")
# exit status
if [ "$RC" -eq 0 ]; then
  echo "Finished $ITEM ($ELAPSED elapsed time)" >&2
  gzip --force "$LOG"
else
  { echo "$ITEM FAILED";
    echo "(see also $LOG)";
    echo; tail "$LOG"; echo; } >&2
fi
exit "$RC"