lib/scripts/getsettings

clarified signature;

# -*- shell-script -*- :mode=shellscript:
#
# Author: Makarius
#
# Static Isabelle environment for root of process tree.

export ISABELLE_HOME

export BASH_ENV="$ISABELLE_HOME/lib/scripts/getfunctions"
source "$BASH_ENV"


if [ -z "$ISABELLE_SETTINGS_PRESENT" ]
then

export ISABELLE_SETTINGS_PRESENT=true

set -o allexport

#sane environment defaults (notably on macOS)
if [ "$ISABELLE_APP" = true -a -x /usr/libexec/path_helper ]; then
  eval $(/usr/libexec/path_helper -s)
fi

#Cygwin vs. POSIX
if [ "$OSTYPE" = cygwin ]
then
  unset INI_DIR

  TMPDIR="$(cygpath -u "$LOCALAPPDATA")/Temp"
  TMP="$TMPDIR"
  TEMP="$TMPDIR"

  if [ -z "$USER_HOME" ]; then
    USER_HOME="$(cygpath -u "$USERPROFILE")"
  fi

  CYGWIN_ROOT="$(platform_path "/")"
  ISABELLE_ROOT="$(platform_path "$ISABELLE_HOME")"

  ISABELLE_CLASSPATH="$(cygpath -i -u -p "$CLASSPATH")"
  export CLASSPATH=""
else
  if [ -z "$USER_HOME" ]; then
    USER_HOME="$HOME"
  fi

  ISABELLE_ROOT="$ISABELLE_HOME"

  ISABELLE_CLASSPATH="$CLASSPATH"
  export CLASSPATH=""
fi

#init cumulative settings
ISABELLE_FONTS=""
ISABELLE_FONTS_HIDDEN=""
ISABELLE_SCALA_SERVICES=""
ISABELLE_DIRECTORIES=""

#main executables
ISABELLE_TOOL="$ISABELLE_HOME/bin/isabelle"
PATH="$ISABELLE_HOME/bin:$PATH"

#platform
source "$ISABELLE_HOME/lib/scripts/isabelle-platform"
if [ -z "$ISABELLE_PLATFORM_FAMILY" ]; then
  echo 1>&2 "Failed to determine hardware and operating system type!"
  exit 2
fi

if [ -z "$ISABELLE_IDENTIFIER" -a -f "$ISABELLE_HOME/etc/ISABELLE_IDENTIFIER" ]
then
  ISABELLE_IDENTIFIER="$(cat "$ISABELLE_HOME/etc/ISABELLE_IDENTIFIER")"
fi

ISABELLE_NAME="${ISABELLE_IDENTIFIER:-Isabelle}"

ISABELLE_HOSTNAME="$(hostname -s 2>/dev/null || uname -n)"


# components

ISABELLE_COMPONENTS=""
ISABELLE_COMPONENTS_MISSING=""

#main components
init_component "$ISABELLE_HOME"
[ -d "$ISABELLE_HOME/Admin" ] && init_component "$ISABELLE_HOME/Admin"
if [ -d "$ISABELLE_HOME_USER" ]; then
  init_component "$ISABELLE_HOME_USER"
else
  mkdir -p "$ISABELLE_HOME_USER"
  chmod $(umask -S) "$ISABELLE_HOME_USER"
fi

#POLYML_EXE
case "$ISABELLE_PLATFORM_FAMILY" in
  windows*)
    POLYML_EXE="$ML_HOME/poly.exe"
    ;;
  *)
    POLYML_EXE="$ML_HOME/poly"
    ;;
esac

#ML system identifier
if [ -z "$ML_PLATFORM" ]; then
  ML_IDENTIFIER="$ML_SYSTEM"
else
  ML_IDENTIFIER="${ML_SYSTEM}_${ML_PLATFORM}"
fi

#enforce ISABELLE_OCAMLFIND
if [ -d "$ISABELLE_OPAM_ROOT/$ISABELLE_OCAML_VERSION/bin" ]; then
  ISABELLE_OCAMLFIND="$ISABELLE_HOME/lib/scripts/ocamlfind"
fi

#enforce ISABELLE_GHC
if [ -f "$ISABELLE_STACK_ROOT/ISABELLE_GHC_EXE-$ISABELLE_PLATFORM_FAMILY" ]; then
  if [ -f "$(cat "$ISABELLE_STACK_ROOT/ISABELLE_GHC_EXE-$ISABELLE_PLATFORM_FAMILY")" ]; then
    ISABELLE_GHC="$ISABELLE_HOME/lib/scripts/ghc"
    ISABELLE_GHC_STACK=true
  fi
fi

#enforce JAVA_HOME
if [ -d "$ISABELLE_JDK_HOME/jre" ]
then
  export JAVA_HOME="$ISABELLE_JDK_HOME/jre"
else
  export JAVA_HOME="$ISABELLE_JDK_HOME"
fi

if [ -e "$ISABELLE_SETUP_JAR" ]; then
  ISABELLE_SETUP_CLASSPATH="$(isabelle_jdk java -classpath "$(platform_path "$SCALA_INTERFACES:$ISABELLE_SETUP_JAR")" isabelle.setup.Setup classpath 2>/dev/null)"
fi

set +o allexport

fi