tools/devshell/contrib/flutter-attach

#!/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=Run, inspect and debug
### attach to a running flutter module to enable hot reload and debugging

## usage: fx flutter-attach //topaz/examples/hello_world:hello_world
##
## This command requires Topaz in order to run.
##
## Arguments:
##   -v|--verbose Enable verbose logging.
##   -h|--help    Print out this message.

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

ARGS=()

NAME="$(get-device-name)"
if [[ -n "$name" ]]; then
  ARGS+=("--device", "${name}")
fi

for var in "$@"
do
  case "$var" in
    -h|--help)
      fx-command-help
      exit 0
    ;;
    -v|--verbose)
      ARGS+=("--verbose")
    ;;
    *)
      TARGET="$var"
    ;;
  esac
done

PREBUILT_DART="${PREBUILT_DART_DIR}/bin/dart"
if [[ ! -x "$PREBUILT_DART" ]]; then
  fx-error "No prebuilt dart found in ${PREBUILT_DART_DIR}."
  exit 1
fi

DEV_FINDER="${FUCHSIA_BUILD_DIR}/host-tools/device-finder"
if [[ ! -x "$DEV_FINDER" ]]; then
  fx-error "Cannot find Fuchsia device finder in ${DEV_FINDER}."
  fx-error "Run 'fx build' to build host tools."
  exit 1
fi

FUCHSIA_ATTACH_BIN="${FUCHSIA_BUILD_DIR}/host_x64/dart-tools/fuchsia_attach"
if [[ ! -x "$FUCHSIA_ATTACH_BIN" ]]; then
  fx-error "No fuchsia_attach tool in ${FUCHSIA_ATTACH_BIN}."
  fx-error "Make sure it is in your 'fx set' config and run 'fx build' to build it."
  exit 1
fi

# The flutter tool expects the working directory is the fuchsia root.
cd "${FUCHSIA_DIR}"

"${FUCHSIA_ATTACH_BIN}" \
  "--dart-sdk=${PREBUILT_DART}" \
  "--build-dir=${FUCHSIA_BUILD_DIR}"\
  "--target=${TARGET}" \
  "--dev-finder=${DEV_FINDER}" \
  "${ARGS[@]}"