Admin/lib/Tools/build_setup

invoke Scala compiler from Java, without external process;
tuned messages;

#!/usr/bin/env bash
#
# Author: Makarius
#
# DESCRIPTION: build component for Isabelle/Java setup tool

## sources

declare -a SOURCES=(
  "Build_Scala.java"
  "Environment.java"
  "Setup.java"
)


## usage

PRG=$(basename "$0")

function usage()
{
  echo
  echo "Usage: isabelle $PRG [OPTIONS] COMPONENT_DIR"
  echo
  echo "  Build component for Isabelle/Java setup tool."
  echo
  exit 1
}

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


## process command line

[ "$#" -ge 1 ] && { COMPONENT_DIR="$1"; shift; }
[ "$#" -ne 0 -o -z "$COMPONENT_DIR" ] && usage



## main

[ -d "$COMPONENT_DIR" ] && fail "Directory already exists: \"$COMPONENT_DIR\""


# build jar

TARGET_DIR="$COMPONENT_DIR/lib"
mkdir -p "$TARGET_DIR/isabelle/setup"

declare -a ARGS=("-Xlint:unchecked")
for SRC in "${SOURCES[@]}"
do
  ARGS["${#ARGS[@]}"]="$(platform_path "$ISABELLE_HOME/src/Tools/Setup/isabelle/setup/$SRC")"
done

isabelle_jdk javac -d "$TARGET_DIR" -classpath "$(platform_path "$ISABELLE_CLASSPATH")" "${ARGS[@]}" || \
  fail "Failed to compile sources"

isabelle_jdk jar -c -f "$(platform_path "$TARGET_DIR/isabelle_setup.jar")" \
  -e "isabelle.setup.Setup" -C "$TARGET_DIR" isabelle || fail "Failed to produce jar"

rm -rf "$TARGET_DIR/isabelle"


# etc/settings

mkdir -p "$COMPONENT_DIR/etc"
cat > "$COMPONENT_DIR/etc/settings" <<EOF
# -*- shell-script -*- :mode=shellscript:

ISABELLE_SETUP_JAR="\$COMPONENT/lib/isabelle_setup.jar"
classpath "\$ISABELLE_SETUP_JAR"
EOF


# README

cat > "$COMPONENT_DIR/README" <<EOF
Isabelle setup in pure Java, see also \$ISABELLE_HOME/src/Tools/Setup/.
EOF