#!/usr/bin/env bash

 #

 # makebundle -- re-package with add-on components

 ## diagnostics

 PRG=$(basename "$0")

 function usage()

 {

   echo

   echo "Usage: $PRG ARCHIVE PLATFORM"

   echo

   echo "  Re-package Isabelle source distribution with add-on components"

   echo "  and heap images"

   echo

   exit 1

 }

 function fail()

 {

   echo "$1" >&2

   exit 2

 }

 ## implicit and explicit arguments

 TMP="/var/tmp/isabelle-makebundle$$"

 mkdir "$TMP" || fail "Cannot create directory $TMP"

 [ "$#" -ne 2 ] && usage

 ARCHIVE="$1"; shift

 PLATFORM="$1"; shift

 [ -f "$ARCHIVE" ] || fail "Bad source archive: $ARCHIVE"

 ## main

 ARCHIVE_DIR="$(cd $(dirname "$ARCHIVE"); echo "$PWD")"

 ISABELLE_NAME="$(basename "$ARCHIVE" .tar.gz)"

 ISABELLE_HOME="$TMP/$ISABELLE_NAME"

 tar -C "$TMP" -x -z -f "$ARCHIVE"

 echo "#bundled components" >> "$ISABELLE_HOME/etc/components"

 for CONTRIB in "$ARCHIVE_DIR"/contrib/*.tar.gz

 do

   tar -C "$ISABELLE_HOME/contrib" -x -z -f "$CONTRIB"

   NAME="$(basename "$CONTRIB" .tar.gz)"

   [ -d "$ISABELLE_HOME/contrib/$NAME" ] || fail "Bad archive content $CONTRIB"

   if [ -e "$ISABELLE_HOME/contrib/$NAME/etc/settings" ]; then

     echo "component $NAME"

     echo "contrib/$NAME" >> "$ISABELLE_HOME/etc/components"

   else

     echo "package $NAME"

   fi

 done

 HEAPS_ARCHIVE="$ARCHIVE_DIR/${ISABELLE_NAME}_heaps_${PLATFORM}.tar.gz"

 [ -f "$HEAPS_ARCHIVE" ] || fail "Bad heaps archive: $HEAPS_ARCHIVE"

 echo "heaps"

 tar -C "$TMP" -x -z -f "$HEAPS_ARCHIVE"

 (

   cd "$TMP/$ISABELLE_NAME/contrib/ProofGeneral"

   find . -name "*.elc" -exec rm {} ";"

 )

 case "$PLATFORM" in

   x86-cygwin)

     rm "$TMP/$ISABELLE_NAME/contrib/ProofGeneral"

     ln -s ProofGeneral-3.7.1.1 "$TMP/$ISABELLE_NAME/contrib/ProofGeneral"

     ;;

   *)

     ;;

 esac

 BUNDLE_ARCHIVE="${ARCHIVE_DIR}/${ISABELLE_NAME}_bundle_${PLATFORM}.tar.gz"

 echo "$(basename "$BUNDLE_ARCHIVE")"

 tar -C "$TMP" -c -z -f "$BUNDLE_ARCHIVE" "$ISABELLE_NAME"

 # clean up

 cd /tmp

 rm -rf "$TMP"