#!/bin/bash
# Copyright (c) 2013, the Dart project authors.  Please see the AUTHORS file
# for details. All rights reserved. Use of this source code is governed by a
# BSD-style license that can be found in the LICENSE file.

function follow_links() {
  while [ -h "$1" ]; do
    # On Mac OS, readlink -f doesn't work.
    1="$(readlink "$1")"
  done
  echo "$1"
}

# Unlike $0, $BASH_SOURCE points to the absolute path of this file.
PROG_NAME="$(follow_links "$BASH_SOURCE")"

# Handle the case where dart-sdk/bin has been symlinked to.
BIN_DIR="$(follow_links "$(cd "${PROG_NAME%/*}" ; pwd -P)")"

SDK_DIR="$(cd "${BIN_DIR}/.." ; pwd -P)"

DART="$BIN_DIR/dart"

SNAPSHOT="$BIN_DIR/snapshots/pub.dart.snapshot"

if test -f "$SNAPSHOT"; then
  # We are running the snapshot in the built SDK.
  exec "$DART" "--checked" "$SNAPSHOT" "$@"
else
  # We are running pub from source in the development repo.
  if [ -z "$DART_CONFIGURATION" ];
  then
    DART_CONFIGURATION="ReleaseIA32"
  fi

  if [[ `uname` == 'Darwin' ]];
  then
    PACKAGES_DIR="$SDK_DIR"/../xcodebuild/$DART_CONFIGURATION/packages/
  else
    PACKAGES_DIR="$SDK_DIR"/../out/$DART_CONFIGURATION/packages/
  fi

  PUB="$SDK_DIR/lib/_internal/pub/bin/pub.dart"

  exec "$DART" "--checked" "--package-root=$PACKAGES_DIR" "$PUB" "$@"
fi