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#!/usr/bin/env python |
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# -*- coding: utf-8 -*- |
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""" |
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cookiecutter.config |
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------------------- |
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Global configuration handling |
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""" |
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from __future__ import unicode_literals |
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import copy |
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import logging |
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import os |
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import io |
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import poyo |
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from .exceptions import ConfigDoesNotExistException |
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from .exceptions import InvalidConfiguration |
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logger = logging.getLogger(__name__) |
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USER_CONFIG_PATH = os.path.expanduser('~/.cookiecutterrc') |
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DEFAULT_CONFIG = { |
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'cookiecutters_dir': os.path.expanduser('~/.cookiecutters/'), |
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'replay_dir': os.path.expanduser('~/.cookiecutter_replay/'), |
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'default_context': {} |
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} |
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def _expand_path(path): |
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"""Expand both environment variables and user home in the given path.""" |
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path = os.path.expandvars(path) |
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path = os.path.expanduser(path) |
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return path |
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def get_config(config_path): |
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""" |
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Retrieve the config from the specified path, returning it as a config dict. |
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""" |
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if not os.path.exists(config_path): |
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raise ConfigDoesNotExistException |
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logger.debug('config_path is {0}'.format(config_path)) |
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with io.open(config_path, encoding='utf-8') as file_handle: |
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try: |
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yaml_dict = poyo.parse_string(file_handle.read()) |
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except poyo.exceptions.PoyoException as e: |
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raise InvalidConfiguration( |
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'Unable to parse YAML file {}. Error: {}' |
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''.format(config_path, e) |
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) |
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config_dict = copy.copy(DEFAULT_CONFIG) |
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config_dict.update(yaml_dict) |
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raw_replay_dir = config_dict['replay_dir'] |
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config_dict['replay_dir'] = _expand_path(raw_replay_dir) |
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raw_cookies_dir = config_dict['cookiecutters_dir'] |
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config_dict['cookiecutters_dir'] = _expand_path(raw_cookies_dir) |
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return config_dict |
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def get_user_config(config_file=USER_CONFIG_PATH): |
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"""Retrieve the config from a file or return the defaults if None is |
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passed. If an environment variable `COOKIECUTTER_CONFIG` is set up, try |
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to load its value. Otherwise fall back to a default file or config. |
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""" |
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# Do NOT load a config. Return defaults instead. |
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if config_file is None: |
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return copy.copy(DEFAULT_CONFIG) |
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# Load the given config file |
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if config_file and config_file is not USER_CONFIG_PATH: |
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return get_config(config_file) |
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try: |
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# Does the user set up a config environment variable? |
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env_config_file = os.environ['COOKIECUTTER_CONFIG'] |
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except KeyError: |
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# Load an optional user config if it exists |
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# otherwise return the defaults |
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if os.path.exists(USER_CONFIG_PATH): |
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return get_config(USER_CONFIG_PATH) |
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else: |
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return copy.copy(DEFAULT_CONFIG) |
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else: |
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# There is a config environment variable. Try to load it. |
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# Do not check for existence, so invalid file paths raise an error. |
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return get_config(env_config_file) |
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michaeljoseph /
cookiecutter
