#!/usr/bin/env bash

#

# Author: Markus Wenzel, TU Muenchen

#

# Isabelle tool wrapper.

if [ -L "$0" ]; then

  TARGET="$(LC_ALL=C ls -l "$0" | sed 's/.* -> //')"

  exec "$(cd "$(dirname "$0")"; cd "$(pwd -P)"; cd "$(dirname "$TARGET")"; pwd)/$(basename "$TARGET")" "$@"

fi

## settings

PRG="$(basename "$0")"

ISABELLE_HOME="$(cd "$(dirname "$0")"; cd "$(pwd -P)"; cd ..; pwd)"

source "$ISABELLE_HOME/lib/scripts/getsettings" || exit 2

splitarray ":" "$ISABELLE_TOOLS"; TOOLS=("${SPLITARRAY[@]}")

## diagnostics

function usage()

{

  echo

  echo "Usage: $PRG NAME [ARGS ...]"

  echo

  echo "  Start Isabelle tool NAME with ARGS; pass \"-?\" for tool specific help."

  echo

  echo "  Available tools are:"

  for DIR in "${TOOLS[@]}"

  do

    if [ -d "$DIR" ]; then

      for TOOL in "$DIR"/*

      do

        if [ -f "$TOOL" -a -x "$TOOL" ]; then

          NAME="$(basename "$TOOL")"

          DESCRLINE="$(fgrep DESCRIPTION: "$TOOL" | sed -e 's/^.*DESCRIPTION: *//')"

          echo "    $NAME - $DESCRLINE"

        fi

      done

    fi

  done

  exit 1

}

function fail()

{

  echo "$1" >&2

  exit 2

}

## args

[ "$#" -lt 1 -o "$1" = "-?" ] && usage

TOOLNAME="$1"

shift

## main

for DIR in "${TOOLS[@]}"

do

  TOOL="$DIR/$TOOLNAME"

  [ -f "$TOOL" -a -x "$TOOL" ] && exec "$TOOL" "$@"

done

fail "Unknown Isabelle tool: $TOOLNAME"