|
1
|
|
|
# -*- coding: utf-8 -*- |
|
2
|
|
|
|
|
3
|
|
|
"""Helper functions for working with version control systems.""" |
|
4
|
|
|
|
|
5
|
|
|
from __future__ import unicode_literals |
|
6
|
|
|
import logging |
|
7
|
|
|
import os |
|
8
|
|
|
import subprocess |
|
9
|
|
|
|
|
10
|
|
|
from whichcraft import which |
|
11
|
|
|
|
|
12
|
|
|
from .exceptions import ( |
|
13
|
|
|
RepositoryNotFound, RepositoryCloneFailed, UnknownRepoType, VCSNotInstalled |
|
14
|
|
|
) |
|
15
|
|
|
from .utils import make_sure_path_exists, prompt_and_delete |
|
16
|
|
|
|
|
17
|
|
|
logger = logging.getLogger(__name__) |
|
18
|
|
|
|
|
19
|
|
|
|
|
20
|
|
|
BRANCH_ERRORS = [ |
|
21
|
|
|
'error: pathspec', |
|
22
|
|
|
'unknown revision', |
|
23
|
|
|
] |
|
24
|
|
|
|
|
25
|
|
|
|
|
26
|
|
|
def identify_repo(repo_url): |
|
27
|
|
|
"""Determine if `repo_url` should be treated as a URL to a git or hg repo. |
|
28
|
|
|
|
|
29
|
|
|
Repos can be identified by prepending "hg+" or "git+" to the repo URL. |
|
30
|
|
|
|
|
31
|
|
|
:param repo_url: Repo URL of unknown type. |
|
32
|
|
|
:returns: ('git', repo_url), ('hg', repo_url), or None. |
|
33
|
|
|
""" |
|
34
|
|
|
repo_url_values = repo_url.split('+') |
|
35
|
|
|
if len(repo_url_values) == 2: |
|
36
|
|
|
repo_type = repo_url_values[0] |
|
37
|
|
|
if repo_type in ["git", "hg"]: |
|
38
|
|
|
return repo_type, repo_url_values[1] |
|
39
|
|
|
else: |
|
40
|
|
|
raise UnknownRepoType |
|
41
|
|
|
else: |
|
42
|
|
|
if 'git' in repo_url: |
|
43
|
|
|
return 'git', repo_url |
|
44
|
|
|
elif 'bitbucket' in repo_url: |
|
45
|
|
|
return 'hg', repo_url |
|
46
|
|
|
else: |
|
47
|
|
|
raise UnknownRepoType |
|
48
|
|
|
|
|
49
|
|
|
|
|
50
|
|
|
def is_vcs_installed(repo_type): |
|
51
|
|
|
""" |
|
52
|
|
|
Check if the version control system for a repo type is installed. |
|
53
|
|
|
|
|
54
|
|
|
:param repo_type: |
|
55
|
|
|
""" |
|
56
|
|
|
return bool(which(repo_type)) |
|
57
|
|
|
|
|
58
|
|
|
|
|
59
|
|
|
def clone(repo_url, checkout=None, clone_to_dir='.', no_input=False): |
|
60
|
|
|
"""Clone a repo to the current directory. |
|
61
|
|
|
|
|
62
|
|
|
:param repo_url: Repo URL of unknown type. |
|
63
|
|
|
:param checkout: The branch, tag or commit ID to checkout after clone. |
|
64
|
|
|
:param clone_to_dir: The directory to clone to. |
|
65
|
|
|
Defaults to the current directory. |
|
66
|
|
|
:param no_input: Suppress all user prompts when calling via API. |
|
67
|
|
|
""" |
|
68
|
|
|
# Ensure that clone_to_dir exists |
|
69
|
|
|
clone_to_dir = os.path.expanduser(clone_to_dir) |
|
70
|
|
|
make_sure_path_exists(clone_to_dir) |
|
71
|
|
|
|
|
72
|
|
|
# identify the repo_type |
|
73
|
|
|
repo_type, repo_url = identify_repo(repo_url) |
|
74
|
|
|
|
|
75
|
|
|
# check that the appropriate VCS for the repo_type is installed |
|
76
|
|
|
if not is_vcs_installed(repo_type): |
|
77
|
|
|
msg = "'{0}' is not installed.".format(repo_type) |
|
78
|
|
|
raise VCSNotInstalled(msg) |
|
79
|
|
|
|
|
80
|
|
|
repo_url = repo_url.rstrip('/') |
|
81
|
|
|
tail = os.path.split(repo_url)[1] |
|
82
|
|
|
if repo_type == 'git': |
|
83
|
|
|
repo_dir = os.path.normpath(os.path.join(clone_to_dir, |
|
84
|
|
|
tail.rsplit('.git')[0])) |
|
85
|
|
|
elif repo_type == 'hg': |
|
86
|
|
|
repo_dir = os.path.normpath(os.path.join(clone_to_dir, tail)) |
|
87
|
|
|
logger.debug('repo_dir is {0}'.format(repo_dir)) |
|
88
|
|
|
|
|
89
|
|
|
if os.path.isdir(repo_dir): |
|
90
|
|
|
clone = prompt_and_delete(repo_dir, no_input=no_input) |
|
91
|
|
|
else: |
|
92
|
|
|
clone = True |
|
93
|
|
|
|
|
94
|
|
|
if clone: |
|
95
|
|
|
try: |
|
96
|
|
|
subprocess.check_output( |
|
97
|
|
|
[repo_type, 'clone', repo_url], |
|
98
|
|
|
cwd=clone_to_dir, |
|
99
|
|
|
stderr=subprocess.STDOUT, |
|
100
|
|
|
) |
|
101
|
|
|
if checkout is not None: |
|
102
|
|
|
subprocess.check_output( |
|
103
|
|
|
[repo_type, 'checkout', checkout], |
|
104
|
|
|
cwd=repo_dir, |
|
105
|
|
|
stderr=subprocess.STDOUT, |
|
106
|
|
|
) |
|
107
|
|
|
except subprocess.CalledProcessError as clone_error: |
|
108
|
|
|
output = clone_error.output.decode('utf-8') |
|
109
|
|
|
if 'not found' in output.lower(): |
|
110
|
|
|
raise RepositoryNotFound( |
|
111
|
|
|
'The repository {} could not be found, ' |
|
112
|
|
|
'have you made a typo?'.format(repo_url) |
|
113
|
|
|
) |
|
114
|
|
|
if any(error in output for error in BRANCH_ERRORS): |
|
115
|
|
|
raise RepositoryCloneFailed( |
|
116
|
|
|
'The {} branch of repository {} could not found, ' |
|
117
|
|
|
'have you made a typo?'.format(checkout, repo_url) |
|
118
|
|
|
) |
|
119
|
|
|
raise |
|
120
|
|
|
|
|
121
|
|
|
return repo_dir |
|
122
|
|
|
|
michaeljoseph /
cookiecutter
