src/Pure/build-jars

provide Isabelle/Scala environment as Java extension, instead of user classpath
(which is subject to adhoc changes);

#!/usr/bin/env bash
#
# Author: Makarius
#
# build-jars - build Isabelle/Scala
#
# Requires proper Isabelle settings environment.

## sources

declare -a SOURCES=(
  Concurrent/future.scala
  Concurrent/simple_thread.scala
  Concurrent/volatile.scala
  General/exn.scala
  General/timing.scala
  General/linear_set.scala
  General/markup.scala
  General/position.scala
  General/pretty.scala
  General/scan.scala
  General/sha1.scala
  General/symbol.scala
  General/xml.scala
  General/xml_data.scala
  General/yxml.scala
  Isar/keyword.scala
  Isar/outer_syntax.scala
  Isar/parse.scala
  Isar/token.scala
  PIDE/command.scala
  PIDE/document.scala
  PIDE/isar_document.scala
  PIDE/markup_tree.scala
  PIDE/text.scala
  System/cygwin.scala
  System/download.scala
  System/event_bus.scala
  System/gui_setup.scala
  System/isabelle_charset.scala
  System/isabelle_process.scala
  System/isabelle_syntax.scala
  System/isabelle_system.scala
  System/platform.scala
  System/session.scala
  System/session_manager.scala
  System/standard_system.scala
  System/swing_thread.scala
  Thy/completion.scala
  Thy/html.scala
  Thy/thy_header.scala
  Thy/thy_syntax.scala
  library.scala
  package.scala
)


## diagnostics

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

function usage()
{
  echo
  echo "Usage: isabelle $PRG [OPTIONS]"
  echo
  echo "  Options are:"
  echo "    -f           fresh build"
  echo
  exit 1
}

function fail()
{
  echo "$1" >&2
  exit 2
}

[ -z "$ISABELLE_HOME" ] && fail "Missing Isabelle settings environment"
[ -z "$SCALA_HOME" ] && fail "Unknown SCALA_HOME -- Scala unavailable"


## process command line

# options

FRESH=""

while getopts "f" OPT
do
  case "$OPT" in
    f)
      FRESH=true
      ;;
    \?)
      usage
      ;;
  esac
done

shift $(($OPTIND - 1))


# args

[ "$#" -ne 0 ] && usage



## dependencies

TARGET_DIR="$ISABELLE_HOME/lib/classes"
PURE_JAR="$TARGET_DIR/Pure.jar"
FULL_JAR="$TARGET_DIR/isabelle-scala.jar"

declare -a TARGETS=("$PURE_JAR" "$FULL_JAR")


## main

declare -a UPDATED=()

if [ -n "$FRESH" ]; then
  OUTDATED=true
else
  OUTDATED=false
  for TARGET in "${TARGETS[@]}"
  do
    [ ! -e "$TARGET" ] && OUTDATED=true
  done
  if [ "$OUTDATED" = false ]; then
    for DEP in "${SOURCES[@]}"
    do
      [ ! -e "$DEP" ] && fail "Missing file: $DEP"
      UPDATE=""
      for TARGET in "${TARGETS[@]}"
      do
        [ "$DEP" -nt "$TARGET" ] && {
          OUTDATED=true
          UPDATE=true
        }
      done
      [ -n "$UPDATE" ] && UPDATED["${#UPDATED[@]}"]="$DEP"
    done
  fi
fi

if [ "$OUTDATED" = true ]
then
  echo "###"
  echo "### Building Isabelle/Scala layer ..."
  echo "###"

  [ "${#UPDATED[@]}" -gt 0 ] && {
    echo "Changed files:"
    for FILE in "${UPDATED[@]}"
    do
      echo "  $FILE"
    done
  }

  rm -rf classes && mkdir classes
  "$SCALA_HOME/bin/scalac" -unchecked -deprecation -d classes -target:jvm-1.5 "${SOURCES[@]}" || \
    fail "Failed to compile sources"
  mkdir -p "$TARGET_DIR" || fail "Failed to create directory $TARGET_DIR"

  pushd classes >/dev/null

  CHARSET_SERVICE="META-INF/services/java.nio.charset.spi.CharsetProvider"
  mkdir -p "$(dirname "$CHARSET_SERVICE")"
  echo isabelle.Isabelle_Charset_Provider > "$CHARSET_SERVICE"

  jar cfe "$(jvmpath "$PURE_JAR")" isabelle.GUI_Setup META-INF isabelle || \
    fail "Failed to produce $PURE_JAR"

  cp "$SCALA_HOME/lib/scala-swing.jar" .
  jar xf scala-swing.jar

  cp "$SCALA_HOME/lib/scala-library.jar" "$FULL_JAR"
  jar ufe "$(jvmpath "$FULL_JAR")" isabelle.GUI_Setup isabelle scala || \
    fail "Failed to produce $FULL_JAR"

  mkdir -p "$TARGET_DIR/ext"
  cp "$FULL_JAR" "$TARGET_DIR/ext/"

  popd >/dev/null

  rm -rf classes
fi