1# Copyright 2020 The Pigweed Authors 2# 3# Licensed under the Apache License, Version 2.0 (the "License"); you may not 4# use this file except in compliance with the License. You may obtain a copy of 5# the License at 6# 7# https://www.apache.org/licenses/LICENSE-2.0 8# 9# Unless required by applicable law or agreed to in writing, software 10# distributed under the License is distributed on an "AS IS" BASIS, WITHOUT 11# WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the 12# License for the specific language governing permissions and limitations under 13# the License. 14 15# This script must be tested on bash, zsh, and dash. 16 17_bootstrap_abspath () { 18 $(command -v python3 || command -v python2 || command -v python) -c "import os.path; print(os.path.abspath('$@'))" 19} 20 21# Shell: bash. 22if test -n "$BASH"; then 23 _PW_BOOTSTRAP_PATH="$(_bootstrap_abspath "$BASH_SOURCE")" 24# Shell: zsh. 25elif test -n "$ZSH_NAME"; then 26 _PW_BOOTSTRAP_PATH="$(_bootstrap_abspath "${(%):-%N}")" 27# Shell: dash. 28elif test ${0##*/} = dash; then 29 _PW_BOOTSTRAP_PATH="$(_bootstrap_abspath \ 30 "$(lsof -p $$ -Fn0 | tail -1 | sed 's#^[^/]*##;')")" 31# If everything else fails, try $0. It could work. 32else 33 _PW_BOOTSTRAP_PATH="$(_bootstrap_abspath "$0")" 34fi 35 36# Check if this file is being executed or sourced. 37_pw_sourced=0 38if [ -n "$SWARMING_BOT_ID" ]; then 39 # If set we're running on swarming and don't need this check. 40 _pw_sourced=1 41elif [ -n "$ZSH_EVAL_CONTEXT" ]; then 42 case $ZSH_EVAL_CONTEXT in *:file) _pw_sourced=1;; esac 43elif [ -n "$KSH_VERSION" ]; then 44 [ "$(cd $(dirname -- $0) && pwd -P)/$(basename -- $0)" != \ 45 "$(cd $(dirname -- ${.sh.file}) && pwd -P)/$(basename -- ${.sh.file})" ] \ 46 && _pw_sourced=1 47elif [ -n "$BASH_VERSION" ]; then 48 (return 0 2>/dev/null) && _pw_sourced=1 49else # All other shells: examine $0 for known shell binary filenames 50 # Detects `sh` and `dash`; add additional shell filenames as needed. 51 case ${0##*/} in sh|dash) _pw_sourced=1;; esac 52fi 53 54# Downstream projects need to set something other than PW_ROOT here, like 55# YOUR_PROJECT_ROOT. Please also set PW_ROOT before invoking pw_bootstrap or 56# pw_activate. 57PW_ROOT="$(dirname "$_PW_BOOTSTRAP_PATH")" 58export PW_ROOT 59 60# Please also set PW_PROJECT_ROOT to YOUR_PROJECT_ROOT. 61PW_PROJECT_ROOT="$PW_ROOT" 62export PW_PROJECT_ROOT 63 64. "$PW_ROOT/pw_env_setup/util.sh" 65 66pw_deactivate 67pw_eval_sourced "$_pw_sourced" "$_PW_BOOTSTRAP_PATH" 68pw_check_root "$PW_ROOT" 69_PW_ACTUAL_ENVIRONMENT_ROOT="$(pw_get_env_root)" 70export _PW_ACTUAL_ENVIRONMENT_ROOT 71SETUP_SH="$_PW_ACTUAL_ENVIRONMENT_ROOT/activate.sh" 72 73# Downstream projects may wish to set PW_BANNER_FUNC to a function that prints 74# an ASCII art banner here. 75 76# Run full bootstrap when invoked as bootstrap, or env file is missing/empty. 77if [ "$(basename "$_PW_BOOTSTRAP_PATH")" = "bootstrap.sh" ] || \ 78 [ ! -f "$SETUP_SH" ] || \ 79 [ ! -s "$SETUP_SH" ]; then 80 pw_bootstrap --shell-file "$SETUP_SH" --install-dir "$_PW_ACTUAL_ENVIRONMENT_ROOT" --config-file "$PW_ROOT/pw_env_setup/config.json" 81 pw_finalize bootstrap "$SETUP_SH" 82else 83 pw_activate 84 pw_finalize activate "$SETUP_SH" 85fi 86 87unset _pw_sourced 88unset _PW_BOOTSTRAP_PATH 89unset SETUP_SH 90unset _bootstrap_abspath 91 92pw_cleanup 93