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105 lines
3.9 KiB
105 lines
3.9 KiB
# Copyright 2020 The Pigweed Authors
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#
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# Licensed under the Apache License, Version 2.0 (the "License"); you may not
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# use this file except in compliance with the License. You may obtain a copy of
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# the License at
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#
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# https://www.apache.org/licenses/LICENSE-2.0
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#
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# Unless required by applicable law or agreed to in writing, software
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# distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
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# WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
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# License for the specific language governing permissions and limitations under
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# the License.
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# This script must be tested on bash, zsh, and dash.
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_bootstrap_abspath () {
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$(which python || which python3 || which python2) -c "import os.path; print(os.path.abspath('$@'))"
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}
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# Users are not expected to set PW_CHECKOUT_ROOT, it's only used because it
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# seems to be impossible to reliably determine the path to a sourced file in
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# dash when sourced from a dash script instead of a dash interactive prompt.
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# To reinforce that users should not be using PW_CHECKOUT_ROOT, it is cleared
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# here after it is used, and other pw tools will complain if they see that
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# variable set.
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# TODO(mohrr) find out a way to do this without PW_CHECKOUT_ROOT.
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if test -n "$PW_CHECKOUT_ROOT"; then
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_PW_BOOTSTRAP_PATH="$(_bootstrap_abspath "$PW_CHECKOUT_ROOT/bootstrap.sh")"
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# Downstream projects need to set PW_CHECKOUT_ROOT to point to Pigweed if
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# they're using Pigweed's CI/CQ system.
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unset PW_CHECKOUT_ROOT
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# Shell: bash.
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elif test -n "$BASH"; then
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_PW_BOOTSTRAP_PATH="$(_bootstrap_abspath "$BASH_SOURCE")"
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# Shell: zsh.
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elif test -n "$ZSH_NAME"; then
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_PW_BOOTSTRAP_PATH="$(_bootstrap_abspath "${(%):-%N}")"
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# Shell: dash.
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elif test ${0##*/} = dash; then
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_PW_BOOTSTRAP_PATH="$(_bootstrap_abspath \
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"$(lsof -p $$ -Fn0 | tail -1 | sed 's#^[^/]*##;')")"
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# If everything else fails, try $0. It could work.
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else
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_PW_BOOTSTRAP_PATH="$(_bootstrap_abspath "$0")"
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fi
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# Check if this file is being executed or sourced.
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_pw_sourced=0
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if [ -n "$SWARMING_BOT_ID" ]; then
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# If set we're running on swarming and don't need this check.
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_pw_sourced=1
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elif [ -n "$ZSH_EVAL_CONTEXT" ]; then
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case $ZSH_EVAL_CONTEXT in *:file) _pw_sourced=1;; esac
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elif [ -n "$KSH_VERSION" ]; then
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[ "$(cd $(dirname -- $0) && pwd -P)/$(basename -- $0)" != \
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"$(cd $(dirname -- ${.sh.file}) && pwd -P)/$(basename -- ${.sh.file})" ] \
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&& _pw_sourced=1
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elif [ -n "$BASH_VERSION" ]; then
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(return 0 2>/dev/null) && _pw_sourced=1
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else # All other shells: examine $0 for known shell binary filenames
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# Detects `sh` and `dash`; add additional shell filenames as needed.
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case ${0##*/} in sh|dash) _pw_sourced=1;; esac
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fi
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# Downstream projects need to set something other than PW_ROOT here, like
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# YOUR_PROJECT_ROOT. Please also set PW_ROOT before invoking pw_bootstrap or
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# pw_activate.
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PW_ROOT="$(dirname "$_PW_BOOTSTRAP_PATH")"
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export PW_ROOT
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# Please also set PW_PROJECT_ROOT to YOUR_PROJECT_ROOT.
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PW_PROJECT_ROOT="$PW_ROOT"
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export PW_PROJECT_ROOT
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. "$PW_ROOT/pw_env_setup/util.sh"
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pw_deactivate
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pw_eval_sourced "$_pw_sourced" "$_PW_BOOTSTRAP_PATH"
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pw_check_root "$PW_ROOT"
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_PW_ACTUAL_ENVIRONMENT_ROOT="$(pw_get_env_root)"
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export _PW_ACTUAL_ENVIRONMENT_ROOT
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SETUP_SH="$_PW_ACTUAL_ENVIRONMENT_ROOT/activate.sh"
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# Downstream projects may wish to set PW_BANNER_FUNC to a function that prints
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# an ASCII art banner here.
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# Run full bootstrap when invoked as bootstrap, or env file is missing/empty.
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if [ "$(basename "$_PW_BOOTSTRAP_PATH")" = "bootstrap.sh" ] || \
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[ ! -f "$SETUP_SH" ] || \
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[ ! -s "$SETUP_SH" ]; then
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pw_bootstrap --shell-file "$SETUP_SH" --install-dir "$_PW_ACTUAL_ENVIRONMENT_ROOT" --json-file "$_PW_ACTUAL_ENVIRONMENT_ROOT/actions.json" --config-file "$PW_ROOT/pw_env_setup/config.json"
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pw_finalize bootstrap "$SETUP_SH"
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else
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pw_activate
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pw_finalize activate "$SETUP_SH"
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fi
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unset _pw_sourced
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unset _PW_BOOTSTRAP_PATH
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unset SETUP_SH
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unset _bootstrap_abspath
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pw_cleanup
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