tools/devshell/unset-device

#!/bin/bash
# Copyright 2018 The Fuchsia Authors. All rights reserved.
# Use of this source code is governed by a BSD-style license that can be
# found in the LICENSE file.

#### CATEGORY=Device discovery
### unset the default device to interact with

## usage: fx unset-device
##
## Unset the default device to work with for the active build directory. See "fx set-device"
## for more information.

set -e -o pipefail

source "$(cd "$(dirname "${BASH_SOURCE[0]}")" >/dev/null 2>&1 && pwd)"/lib/vars.sh || exit $?
fx-standard-switches "$@"
fx-config-read
fx-fail-if-device-specified

if [[ -z "${FUCHSIA_BUILD_DIR}" ]]; then
  # This codepath should be unreachable after `fx-config-read`, but we're
  # leaving it in as a health check.
  fx-error 'BUG: $FUCHSIA_BUILD_DIR is not defined in `unset-device`!'
  exit 1
fi

echo "The default device has been unset for '${FUCHSIA_BUILD_DIR}'"
rm -f "${FUCHSIA_BUILD_DIR}.device"

# Ensure the below checks will report the correct error message.
unset FUCHSIA_NODENAME

# Check if the user has set a default target via environment variable(s) which
# can override the effectiveness of this command.
function overridden-env-var-error {
  # This line is executed after echoing `The default device has been unset for ...`.
  fx-error "However, you've overriden this by setting ${ENV_VARS}."
  fx-error "If you want to clear the default device, please unset the ${ENV_VAR_NAMES} environment variable."

  exit 1
}
fx-if-target-set-by-env overridden-env-var-error