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
|
# This Source Code Form is subject to the terms of the Mozilla Public
# License, v. 2.0. If a copy of the MPL was not distributed with this
# file, You can obtain one at http://mozilla.org/MPL/2.0/.
import os
import platform
import re
import signal
import subprocess
import sys
import mozpack.path as mozpath
from mozfile import which
from mozlint import result
from mozlint.pathutils import expand_exclusions
here = os.path.abspath(os.path.dirname(__file__))
BLACK_REQUIREMENTS_PATH = os.path.join(here, "black_requirements.txt")
BLACK_INSTALL_ERROR = """
Unable to install correct version of black
Try to install it manually with:
$ pip install -U --require-hashes -r {}
""".strip().format(
BLACK_REQUIREMENTS_PATH
)
def default_bindir():
# We use sys.prefix to find executables as that gets modified with
# virtualenv's activate_this.py, whereas sys.executable doesn't.
if platform.system() == "Windows":
return os.path.join(sys.prefix, "Scripts")
else:
return os.path.join(sys.prefix, "bin")
def get_black_version(binary):
"""
Returns found binary's version
"""
try:
output = subprocess.check_output(
[binary, "--version"],
stderr=subprocess.STDOUT,
universal_newlines=True,
)
except subprocess.CalledProcessError as e:
output = e.output
try:
# Accept `black.EXE, version ...` on Windows.
# for old version of black, the output is
# black, version 21.4b2
# From black 21.11b1, the output is like
# black, 21.11b1 (compiled: no)
return re.match(r"black.*,( version)? (\S+)", output)[2]
except TypeError as e:
print("Could not parse the version '{}'".format(output))
print("Error: {}".format(e))
def parse_issues(config, output, paths, *, log):
would_reformat = re.compile("^would reformat (.*)$", re.I)
reformatted = re.compile("^reformatted (.*)$", re.I)
cannot_reformat = re.compile("^error: cannot format (.*?): (.*)$", re.I)
results = []
for l in output.split(b"\n"):
line = l.decode("utf-8").rstrip("\r\n")
if line.startswith("All done!") or line.startswith("Oh no!"):
break
match = would_reformat.match(line)
if match:
res = {"path": match.group(1), "level": "error"}
results.append(result.from_config(config, **res))
continue
match = reformatted.match(line)
if match:
res = {"path": match.group(1), "level": "warning", "message": "reformatted"}
results.append(result.from_config(config, **res))
continue
match = cannot_reformat.match(line)
if match:
res = {"path": match.group(1), "level": "error", "message": match.group(2)}
results.append(result.from_config(config, **res))
continue
log.debug(f"Unhandled line: {line}")
return results
def run_process(config, cmd):
orig = signal.signal(signal.SIGINT, signal.SIG_IGN)
proc = subprocess.Popen(cmd, stdout=subprocess.PIPE, stderr=subprocess.STDOUT)
signal.signal(signal.SIGINT, orig)
try:
output, _ = proc.communicate()
proc.wait()
except KeyboardInterrupt:
proc.kill()
return output
def setup(root, **lintargs):
log = lintargs["log"]
virtualenv_bin_path = lintargs.get("virtualenv_bin_path")
# Using `which` searches multiple directories and handles `.exe` on Windows.
binary = which("black", path=(virtualenv_bin_path, default_bindir()))
if binary and os.path.exists(binary):
binary = mozpath.normsep(binary)
log.debug("Looking for black at {}".format(binary))
version = get_black_version(binary)
versions = [
line.split()[0].strip()
for line in open(BLACK_REQUIREMENTS_PATH).readlines()
if line.startswith("black==")
]
if ["black=={}".format(version)] == versions:
log.debug("Black is present with expected version {}".format(version))
return 0
else:
log.debug("Black is present but unexpected version {}".format(version))
log.debug("Black needs to be installed or updated")
virtualenv_manager = lintargs["virtualenv_manager"]
try:
virtualenv_manager.install_pip_requirements(BLACK_REQUIREMENTS_PATH, quiet=True)
except subprocess.CalledProcessError:
print(BLACK_INSTALL_ERROR)
return 1
def run_black(config, paths, fix=None, *, log, virtualenv_bin_path):
fixed = 0
binary = os.path.join(virtualenv_bin_path or default_bindir(), "black")
log.debug("Black version {}".format(get_black_version(binary)))
cmd_args = [binary]
if not fix:
cmd_args.append("--check")
base_command = cmd_args + paths
log.debug("Command: {}".format(" ".join(base_command)))
output = parse_issues(config, run_process(config, base_command), paths, log=log)
# black returns an issue for fixed files as well
for eachIssue in output:
if eachIssue.message == "reformatted":
fixed += 1
return {"results": output, "fixed": fixed}
def lint(paths, config, fix=None, **lintargs):
files = list(expand_exclusions(paths, config, lintargs["root"]))
return run_black(
config,
files,
fix=fix,
log=lintargs["log"],
virtualenv_bin_path=lintargs.get("virtualenv_bin_path"),
)
|
