pw

#!/bin/bash
# Copyright 2025 The Pigweed Authors
#
# Licensed under the Apache License, Version 2.0 (the "License"); you may not
# use this file except in compliance with the License. You may obtain a copy of
# the License at
#
#     https://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
# WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
# License for the specific language governing permissions and limitations under
# the License.

# This is a light wrapper script to seamlessly run the //:pw tool while
# forwarding arguments. This is written as a shell script for three reasons:
#
# 1. `./pw` is significantly shorter than `bazelisk run --config=foo //:pw`.
# 2. .bazelrc configs cannot express multiple portions of this wrapper:
#    a. Startup flags in a --config are ignored.
#    b. The double-dash separator cannot be correctly expressed in a --config.
# 3. There's no way to ask Bazel to be verbose on the first clean build, and
#    as quiet as possible on subsequent runs.

# Print a message that indicates the pw tool might take a few seconds to load.
if [ -t 1 ]; then
  printf " ⏱  Initializing pw tool...\r"
fi
# Don't generate compile commands from this action. Note that since we're
# using bazelisk, `BAZEL_WRAPPER` is NOT respected.
export BAZELISK_SKIP_WRAPPER=1

declare -r _PW_SCRIPT_DIR=$(realpath $(dirname $0))
declare -r _PW_WORKFLOWS_OUT_DIR=${_PW_SCRIPT_DIR}/out/workflows_launcher
declare -r _PW_WORKFLOWS_BIN_PATH=${_PW_WORKFLOWS_OUT_DIR}/bazel-bin/pw.exe

# If the `pw` tool hasn't been built yet, don't silence output since it might
# take a long time.
if [ -f "$_PW_WORKFLOWS_BIN_PATH" ]; then
  declare -r _PW_WORKFLOWS_QUIET=--quiet
else
  declare -r _PW_WORKFLOWS_QUIET
fi

bazelisk \
  ${_PW_WORKFLOWS_QUIET} \
  --output_base=${_PW_WORKFLOWS_OUT_DIR} \
  run \
  --symlink_prefix=${_PW_WORKFLOWS_OUT_DIR}/bazel- \
  --show_result=0 \
  //:pw -- "$@"