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#!/usr/bin/env python |
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# -*- coding: utf-8 -*- |
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""" |
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cookiecutter.vcs |
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---------------- |
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Helper functions for working with version control systems. |
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""" |
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from __future__ import unicode_literals |
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import logging |
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import os |
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import subprocess |
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import sys |
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from whichcraft import which |
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from .exceptions import UnknownRepoType, VCSNotInstalled |
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from .prompt import read_user_yes_no |
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from .utils import make_sure_path_exists, rmtree |
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def prompt_and_delete_repo(repo_dir, no_input=False): |
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""" |
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Asks the user whether it's okay to delete the previously-cloned repo. |
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If yes, deletes it. Otherwise, Cookiecutter exits. |
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:param repo_dir: Directory of previously-cloned repo. |
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:param no_input: Suppress prompt to delete repo and just delete it. |
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""" |
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# Suppress prompt if called via API |
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if no_input: |
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ok_to_delete = True |
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else: |
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question = ( |
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"You've cloned {0} before. " |
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'Is it okay to delete and re-clone it?' |
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).format(repo_dir) |
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ok_to_delete = read_user_yes_no(question, 'yes') |
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if ok_to_delete: |
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rmtree(repo_dir) |
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else: |
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sys.exit() |
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def identify_repo(repo_url): |
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""" |
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Determines if `repo_url` should be treated as a URL to a git or hg repo. |
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Repos can be identified prepeding "hg+" or "git+" to repo URL. |
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:param repo_url: Repo URL of unknown type. |
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:returns: ("git", repo_url), ("hg", repo_url), or None. |
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""" |
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repo_url_values = repo_url.split('+') |
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if len(repo_url_values) == 2: |
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repo_type = repo_url_values[0] |
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if repo_type in ["git", "hg"]: |
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return repo_type, repo_url_values[1] |
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else: |
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raise UnknownRepoType |
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else: |
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if "git" in repo_url: |
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return "git", repo_url |
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elif "bitbucket" in repo_url: |
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return "hg", repo_url |
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else: |
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raise UnknownRepoType |
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def is_vcs_installed(repo_type): |
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""" |
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Check if the version control system for a repo type is installed. |
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:param repo_type: |
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""" |
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return bool(which(repo_type)) |
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def clone(repo_url, checkout=None, clone_to_dir=".", no_input=False): |
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""" |
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Clone a repo to the current directory. |
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:param repo_url: Repo URL of unknown type. |
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:param checkout: The branch, tag or commit ID to checkout after clone. |
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:param clone_to_dir: The directory to clone to. |
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Defaults to the current directory. |
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:param no_input: Suppress all user prompts when calling via API. |
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""" |
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# Ensure that clone_to_dir exists |
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clone_to_dir = os.path.expanduser(clone_to_dir) |
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make_sure_path_exists(clone_to_dir) |
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# identify the repo_type |
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repo_type, repo_url = identify_repo(repo_url) |
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# check that the appropriate VCS for the repo_type is installed |
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if not is_vcs_installed(repo_type): |
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msg = "'{0}' is not installed.".format(repo_type) |
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raise VCSNotInstalled(msg) |
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repo_url = repo_url.rstrip('/') |
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tail = os.path.split(repo_url)[1] |
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if repo_type == 'git': |
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repo_dir = os.path.normpath(os.path.join(clone_to_dir, |
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tail.rsplit('.git')[0])) |
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elif repo_type == 'hg': |
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repo_dir = os.path.normpath(os.path.join(clone_to_dir, tail)) |
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logging.debug('repo_dir is {0}'.format(repo_dir)) |
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if os.path.isdir(repo_dir): |
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prompt_and_delete_repo(repo_dir, no_input=no_input) |
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if repo_type in ['git', 'hg']: |
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subprocess.check_call([repo_type, 'clone', repo_url], cwd=clone_to_dir) |
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if checkout is not None: |
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subprocess.check_call([repo_type, 'checkout', checkout], |
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cwd=repo_dir) |
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return repo_dir |
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audreyr /
cookiecutter
