#!/usr/bin/env bash
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#
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# Summary: Activate virtual environment
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#
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# Usage: pyenv activate <virtualenv>
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# pyenv activate --unset
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#
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# Activate a Python virtualenv environment in current shell.
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# This acts almost as same as `pyenv shell`, but this invokes the `activate`
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# script in your shell.
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#
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# <virtualenv> should be a string matching a Python version known to pyenv.
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set -e
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[ -n "$PYENV_DEBUG" ] && set -x
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# Provide pyenv completions
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if [ "$1" = "--complete" ]; then
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echo --unset
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exec pyenv-virtualenvs --bare
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fi
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versions=("$@")
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shell="$(basename "${PYENV_SHELL:-$SHELL}")"
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if [ -z "$versions" ]; then
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OLDIFS="$IFS"
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IFS=: versions=($(pyenv-version-name))
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IFS="$OLDIFS"
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fi
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if [ "$1" = "--unset" ]; then
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echo "pyenv deactivate"
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exit
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fi
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if [ "${#versions[@]}" -gt 1 ]; then
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echo "pyenv-virtualenv: cannot activate multiple versions at once: ${versions[@]}" 1>&2
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exit 1
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fi
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pyenv-virtualenv-prefix "${versions}" 1>/dev/null
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echo "pyenv shell \"${versions}\""
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case "$shell" in
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fish ) echo ". \"$(pyenv-prefix "${versions}")/bin/activate.fish\"" ;;
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* ) echo "source \"$(pyenv-prefix "${versions}")/bin/activate\"" ;;
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esac
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