| #!/bin/zsh |
| # Copyright (C) 2020 The Android Open Source Project |
| # |
| # 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 |
| # |
| # http://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 script is used as part of a magic incantation in DCTV top-level |
| # scripts that makes programs run inside the DCTV virtual environment |
| # even if run as normal executables, perhaps via symlink, while still |
| # allowing a direct Python invocation to run the script normally (a |
| # capability which is important for debugging). The hack works by |
| # turning the launcher scripts into zsh and Python polyglots by |
| # abusing Python and shell string quoting syntax. |
| dctv_dir=${0:h} |
| stamp="${dctv_dir}/venv/setup.stamp" |
| if ! [[ -r $stamp ]]; then |
| printf >&2 "%s: venv not configured: did you forget to run 'make dev'?\n" \ |
| "${ZSH_ARGZERO:t}" |
| exit 1 |
| fi |
| interp="${dctv_dir}/venv/bin/python" |
| if ! [[ -x $interp ]]; then |
| printf >&2 "%s: venv corrupted: no interpreter!'.\n" "${ZSH_ARGZERO:t}" |
| exit 1 |
| fi |
| if [[ $interp -nt $stamp ]]; then |
| printf >&2 "%s: venv older than interpreter: refresh with 'make clean && make dev'.\n" \ |
| "${ZSH_ARGZERO:t}" |
| exit 1 |
| fi |
| . "${dctv_dir}/venv/run" "$@" |
| exit 1 # just in case: exec isn't supposed to return |
