1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
|
from __future__ import annotations
import argparse
import os.path
import subprocess
import sys
from typing import Sequence
from pre_commit.commands.run import run
from pre_commit.envcontext import envcontext
from pre_commit.parse_shebang import normalize_cmd
from pre_commit.store import Store
Z40 = '0' * 40
def _run_legacy(
hook_type: str,
hook_dir: str,
args: Sequence[str],
) -> tuple[int, bytes]:
if os.environ.get('PRE_COMMIT_RUNNING_LEGACY'):
raise SystemExit(
f"bug: pre-commit's script is installed in migration mode\n"
f'run `pre-commit install -f --hook-type {hook_type}` to fix '
f'this\n\n'
f'Please report this bug at '
f'https://github.com/pre-commit/pre-commit/issues',
)
if hook_type == 'pre-push':
stdin = sys.stdin.buffer.read()
else:
stdin = b''
# not running in legacy mode
legacy_hook = os.path.join(hook_dir, f'{hook_type}.legacy')
if not os.access(legacy_hook, os.X_OK):
return 0, stdin
with envcontext((('PRE_COMMIT_RUNNING_LEGACY', '1'),)):
cmd = normalize_cmd((legacy_hook, *args))
return subprocess.run(cmd, input=stdin).returncode, stdin
def _validate_config(
retv: int,
config: str,
skip_on_missing_config: bool,
) -> None:
if not os.path.isfile(config):
if skip_on_missing_config or os.getenv('PRE_COMMIT_ALLOW_NO_CONFIG'):
print(f'`{config}` config file not found. Skipping `pre-commit`.')
raise SystemExit(retv)
else:
print(
f'No {config} file was found\n'
f'- To temporarily silence this, run '
f'`PRE_COMMIT_ALLOW_NO_CONFIG=1 git ...`\n'
f'- To permanently silence this, install pre-commit with the '
f'--allow-missing-config option\n'
f'- To uninstall pre-commit run `pre-commit uninstall`',
)
raise SystemExit(1)
def _ns(
hook_type: str,
color: bool,
*,
all_files: bool = False,
remote_branch: str | None = None,
local_branch: str | None = None,
from_ref: str | None = None,
to_ref: str | None = None,
remote_name: str | None = None,
remote_url: str | None = None,
commit_msg_filename: str | None = None,
prepare_commit_message_source: str | None = None,
commit_object_name: str | None = None,
checkout_type: str | None = None,
is_squash_merge: str | None = None,
rewrite_command: str | None = None,
) -> argparse.Namespace:
return argparse.Namespace(
color=color,
hook_stage=hook_type.replace('pre-', ''),
remote_branch=remote_branch,
local_branch=local_branch,
from_ref=from_ref,
to_ref=to_ref,
remote_name=remote_name,
remote_url=remote_url,
commit_msg_filename=commit_msg_filename,
prepare_commit_message_source=prepare_commit_message_source,
commit_object_name=commit_object_name,
all_files=all_files,
checkout_type=checkout_type,
is_squash_merge=is_squash_merge,
rewrite_command=rewrite_command,
files=(),
hook=None,
verbose=False,
show_diff_on_failure=False,
)
def _rev_exists(rev: str) -> bool:
return not subprocess.call(('git', 'rev-list', '--quiet', rev))
def _pre_push_ns(
color: bool,
args: Sequence[str],
stdin: bytes,
) -> argparse.Namespace | None:
remote_name = args[0]
remote_url = args[1]
for line in stdin.decode().splitlines():
parts = line.rsplit(maxsplit=3)
local_branch, local_sha, remote_branch, remote_sha = parts
if local_sha == Z40:
continue
elif remote_sha != Z40 and _rev_exists(remote_sha):
return _ns(
'pre-push', color,
from_ref=remote_sha, to_ref=local_sha,
remote_branch=remote_branch,
local_branch=local_branch,
remote_name=remote_name, remote_url=remote_url,
)
else:
# ancestors not found in remote
ancestors = subprocess.check_output((
'git', 'rev-list', local_sha, '--topo-order', '--reverse',
'--not', f'--remotes={remote_name}',
)).decode().strip()
if not ancestors:
continue
else:
first_ancestor = ancestors.splitlines()[0]
cmd = ('git', 'rev-list', '--max-parents=0', local_sha)
roots = set(subprocess.check_output(cmd).decode().splitlines())
if first_ancestor in roots:
# pushing the whole tree including root commit
return _ns(
'pre-push', color,
all_files=True,
remote_name=remote_name, remote_url=remote_url,
remote_branch=remote_branch,
local_branch=local_branch,
)
else:
rev_cmd = ('git', 'rev-parse', f'{first_ancestor}^')
source = subprocess.check_output(rev_cmd).decode().strip()
return _ns(
'pre-push', color,
from_ref=source, to_ref=local_sha,
remote_name=remote_name, remote_url=remote_url,
remote_branch=remote_branch,
local_branch=local_branch,
)
# nothing to push
return None
_EXPECTED_ARG_LENGTH_BY_HOOK = {
'commit-msg': 1,
'post-checkout': 3,
'post-commit': 0,
'pre-commit': 0,
'pre-merge-commit': 0,
'post-merge': 1,
'post-rewrite': 1,
'pre-push': 2,
}
def _check_args_length(hook_type: str, args: Sequence[str]) -> None:
if hook_type == 'prepare-commit-msg':
if len(args) < 1 or len(args) > 3:
raise SystemExit(
f'hook-impl for {hook_type} expected 1, 2, or 3 arguments '
f'but got {len(args)}: {args}',
)
elif hook_type in _EXPECTED_ARG_LENGTH_BY_HOOK:
expected = _EXPECTED_ARG_LENGTH_BY_HOOK[hook_type]
if len(args) != expected:
arguments_s = 'argument' if expected == 1 else 'arguments'
raise SystemExit(
f'hook-impl for {hook_type} expected {expected} {arguments_s} '
f'but got {len(args)}: {args}',
)
else:
raise AssertionError(f'unexpected hook type: {hook_type}')
def _run_ns(
hook_type: str,
color: bool,
args: Sequence[str],
stdin: bytes,
) -> argparse.Namespace | None:
_check_args_length(hook_type, args)
if hook_type == 'pre-push':
return _pre_push_ns(color, args, stdin)
elif hook_type in 'commit-msg':
return _ns(hook_type, color, commit_msg_filename=args[0])
elif hook_type == 'prepare-commit-msg' and len(args) == 1:
return _ns(hook_type, color, commit_msg_filename=args[0])
elif hook_type == 'prepare-commit-msg' and len(args) == 2:
return _ns(
hook_type, color, commit_msg_filename=args[0],
prepare_commit_message_source=args[1],
)
elif hook_type == 'prepare-commit-msg' and len(args) == 3:
return _ns(
hook_type, color, commit_msg_filename=args[0],
prepare_commit_message_source=args[1], commit_object_name=args[2],
)
elif hook_type in {'post-commit', 'pre-merge-commit', 'pre-commit'}:
return _ns(hook_type, color)
elif hook_type == 'post-checkout':
return _ns(
hook_type, color,
from_ref=args[0], to_ref=args[1], checkout_type=args[2],
)
elif hook_type == 'post-merge':
return _ns(hook_type, color, is_squash_merge=args[0])
elif hook_type == 'post-rewrite':
return _ns(hook_type, color, rewrite_command=args[0])
else:
raise AssertionError(f'unexpected hook type: {hook_type}')
def hook_impl(
store: Store,
*,
config: str,
color: bool,
hook_type: str,
hook_dir: str,
skip_on_missing_config: bool,
args: Sequence[str],
) -> int:
retv, stdin = _run_legacy(hook_type, hook_dir, args)
_validate_config(retv, config, skip_on_missing_config)
ns = _run_ns(hook_type, color, args, stdin)
if ns is None:
return retv
else:
return retv | run(config, store, ns)
|
