act-venv.sh

act-venv () {
	local ACTIVATION_SCRIPT
	local VENV_DIRS
	ACTIVATION_SCRIPT="bin/activate" 
	VENV_DIRS=("env" "venv" "python-venv") 
	local dir="$(pwd)"
	local venv=false
	local debug=false
	[ "$1" = "-v" ] && debug=true 
	while [ "${dir}" != "/" ]
	do
		for venv_dir in ${VENV_DIRS[@]}
		do
			local activation="${dir}/${venv_dir}/${ACTIVATION_SCRIPT}"
			[ ${debug} = true ] && echo "searching for ${activation}..."
			if [ -f "${activation}" ]
			then
				if [ "${VIRTUAL_ENV}" != "" ]
				then
					echo "Python virtual environment \"${VIRTUAL_ENV}\" will be deactivated."
					deactivate
				fi
				source ${activation}
				echo "Python virtual environment has been set to \"${VIRTUAL_ENV}\"."
				venv=true 
				break
			fi
		done
		[ ${venv} = true ] && break
		dir=$(dirname ${dir}) 
	done
	if [ ${venv} = false ]
	then
		echo "Python virtual enviroment was not found." >&2
		return 1
	fi
}