pipenv-activate

#!/bin/bash
#
# pipenv-activate -- Activate a pipenv environment without spawning a new shell
#

# Avoid any non-local variables that would be sourced
global() {

local script="$(basename "${BASH_SOURCE}")"
local usage="usage: source ${SCRIPT} [path]"

# Make sure the script is sourced, not executed
[ "${BASH_SOURCE}" == "${0}" ] && {
    echo "error: ${script} must be sourced!" >&2
    return 1
}

main()
{
    # Get project directory (optional argument)
    local proj_path="${1}"
    [ "${1}" == '' ] && proj_path='.'

    # Check that project path directory exists
    [ -d "${proj_path}" ] || {
        echo "error: project path not found: ${proj_path}" >&2
        return 1
    }

    # Check that pipenv is available
    which pipenv >/dev/null 2>&1 || {
        echo "error: pipenv not found!" >&2
        return 1
    }

    # Path to virtual environment
    local venv_path="$(cd "${proj_path}"; pipenv --venv 2>/dev/null)" || {
        echo "error: you must enter a project directory!" >&2
        return 1
    }

    # Path to activate script
    local activate_path="${venv_path}/bin/activate"
    [ ! -f "${activate_path}" ] && {
        echo "error: activate script not found: ${activate_path}" >&2
        return 1
    }

    # Activate environment
    echo 'source "'"${activate_path}"'"'
    \source "${activate_path}" || {
        echo "error: cannot source activate script: ${activate_path}" >&2
        return 1
    }
}
main "${@}" || { echo "${USAGE}" >&2; return $?; }

}; global "${@}"