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A small shell script to handle all your Python venvs
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| #!/bin/bash | |
| # | |
| # A small shell script to handle all your virtualenvs | |
| # | |
| # Copyright 2020-2021 Alexander Kernozhitsky <[email protected]> | |
| # | |
| # This program is free software: you can redistribute it and/or modify | |
| # it under the terms of the GNU General Public License as published by | |
| # the Free Software Foundation, either version 3 of the License, or | |
| # (at your option) any later version. | |
| # | |
| # This program is distributed in the hope that it will be useful, | |
| # but WITHOUT ANY WARRANTY; without even the implied warranty of | |
| # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
| # GNU General Public License for more details. | |
| # | |
| # You should have received a copy of the GNU General Public License | |
| # along with this program. If not, see <https://www.gnu.org/licenses/>. | |
| VENV_DIR=~/venvs | |
| validate_name() { | |
| [[ "$(grep -cEZ '^[a-zA-Z0-9-]+$' <<<"$NAME")" == 1 ]] | |
| } | |
| ensure_name() { | |
| local NAME="$1" | |
| local DIR="$VENV_DIR/$NAME" | |
| if ! validate_name "$NAME"; then | |
| echo "Error: Env name $NAME contains invalid chars" | |
| exit 1 | |
| fi | |
| if ! [[ -d "$DIR" ]]; then | |
| echo "Error: Env $NAME does not exist" | |
| exit 1 | |
| fi | |
| } | |
| init() { | |
| if [[ "$#" != 1 ]]; then | |
| echo "Usage: $0 init NAME" | |
| exit 1 | |
| fi | |
| local NAME="$1" | |
| if ! validate_name "$NAME"; then | |
| echo "Error: Env name $NAME contains invalid chars" | |
| exit 1 | |
| fi | |
| local DIR="$VENV_DIR/$NAME" | |
| if [[ -d "$DIR" ]]; then | |
| echo "Error: Env $NAME already exists" | |
| exit 1 | |
| fi | |
| python3 -m venv --upgrade-deps "$DIR" | |
| } | |
| start() { | |
| if [[ "$#" != 1 ]]; then | |
| echo "Usage: $0 start NAME" | |
| exit 1 | |
| fi | |
| local NAME="$1" | |
| local DIR="$VENV_DIR/$NAME" | |
| ensure_name "$NAME" | |
| bash --rcfile <(echo ". $HOME/.bashrc; . $DIR/bin/activate;") | |
| } | |
| delete() { | |
| if [[ "$#" != 1 ]]; then | |
| echo "Usage: $0 delete NAME" | |
| exit 1 | |
| fi | |
| local NAME="$1" | |
| local DIR="$VENV_DIR/$NAME" | |
| ensure_name "$NAME" | |
| while :; do | |
| echo -n "Are you sure to delete $DIR? [y/n] " | |
| read -r ANS | |
| case "$ANS" in | |
| y|Y) break ;; | |
| n|N) exit 1 ;; | |
| *) echo "Invalid option $ANS" ;; | |
| esac | |
| done | |
| rm -rf "$DIR" | |
| } | |
| list() { | |
| if [[ "$#" != 0 ]]; then | |
| echo "Usage: $0 info" | |
| exit 1 | |
| fi | |
| ls -1 "$VENV_DIR" | |
| } | |
| info() { | |
| if [[ "$#" != 0 ]]; then | |
| echo "Usage: $0 info" | |
| exit 1 | |
| fi | |
| echo "Penv: a tiny Python venv manager" | |
| echo "Copyright (c) 2020-2021 Alexander Kernozhitsky" | |
| echo "Version: 0.1.1-beta" | |
| } | |
| py() { | |
| if [[ "$#" != 1 ]]; then | |
| echo "Usage: $0 py NAME" | |
| exit 1 | |
| fi | |
| local NAME="$1" | |
| local DIR="$VENV_DIR/$NAME" | |
| ensure_name "$NAME" | |
| bash -c ' | |
| . "$0"/bin/activate | |
| python3 | |
| ' "$DIR" | |
| } | |
| ipython() { | |
| if [[ "$#" != 1 ]]; then | |
| echo "Usage: $0 ipython NAME" | |
| exit 1 | |
| fi | |
| local NAME="$1" | |
| local DIR="$VENV_DIR/$NAME" | |
| ensure_name "$NAME" | |
| bash -c ' | |
| . "$0"/bin/activate | |
| grep -E "^ipython\s" <<<"$(pip list)" >/dev/null || pip install ipython | |
| ipython3 | |
| ' "$DIR" | |
| } | |
| notebook() { | |
| if [[ "$#" != 1 ]]; then | |
| echo "Usage: $0 notebook NAME" | |
| exit 1 | |
| fi | |
| local NAME="$1" | |
| local DIR="$VENV_DIR/$NAME" | |
| ensure_name "$NAME" | |
| bash -c ' | |
| . "$0"/bin/activate | |
| grep -E "^notebook\s" <<<"$(pip list)" >/dev/null || pip install notebook | |
| jupyter-notebook | |
| ' "$DIR" | |
| } | |
| unknown() { | |
| echo "Unknown command '$CMD'" | |
| echo "Usage: $0 init|start|delete|list|info|py|ipython|notebook" | |
| exit 1 | |
| } | |
| CMD="$1" | |
| shift | |
| case "$CMD" in | |
| "init") init "$@" ;; | |
| "start") start "$@" ;; | |
| "delete") delete "$@" ;; | |
| "list") list "$@" ;; | |
| "info") info "$@" ;; | |
| "py") py "$@" ;; | |
| "ipython") ipython "$@" ;; | |
| "notebook") notebook "$@" ;; | |
| *) unknown "$CMD" ;; | |
| esac |
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