|
1
|
|
|
"""Utilities to call shell programs.""" |
|
2
|
|
|
|
|
3
|
1 |
|
import os |
|
4
|
1 |
|
import subprocess |
|
5
|
1 |
|
import logging |
|
6
|
|
|
|
|
7
|
1 |
|
from . import common |
|
8
|
1 |
|
from .exceptions import ShellError |
|
9
|
|
|
|
|
10
|
1 |
|
CMD_PREFIX = "$ " |
|
11
|
1 |
|
OUT_PREFIX = "> " |
|
12
|
|
|
|
|
13
|
1 |
|
log = logging.getLogger(__name__) |
|
14
|
|
|
|
|
15
|
|
|
|
|
16
|
1 |
|
def call(name, *args, _show=True, _ignore=False): |
|
17
|
|
|
"""Call a shell program with arguments. |
|
18
|
|
|
|
|
19
|
|
|
:param name: name of program to call |
|
20
|
|
|
:param args: list of command-line arguments |
|
21
|
|
|
:param _show: display the call on stdout |
|
22
|
|
|
:param _ignore: ignore non-zero return codes |
|
23
|
|
|
|
|
24
|
|
|
""" |
|
25
|
1 |
|
program = CMD_PREFIX + ' '.join([name, *args]) |
|
26
|
1 |
|
if _show: |
|
27
|
1 |
|
common.show(program) |
|
28
|
|
|
else: |
|
29
|
1 |
|
log.debug(program) |
|
30
|
|
|
|
|
31
|
1 |
|
if name == 'cd': |
|
32
|
1 |
|
return os.chdir(args[0]) # 'cd' has no effect in a subprocess |
|
33
|
|
|
|
|
34
|
1 |
|
command = subprocess.run( |
|
|
|
|
|
|
35
|
|
|
[name, *args], universal_newlines=True, |
|
36
|
|
|
stdout=subprocess.PIPE, stderr=subprocess.STDOUT, |
|
37
|
|
|
) |
|
38
|
|
|
|
|
39
|
1 |
|
for line in command.stdout.splitlines(): |
|
40
|
1 |
|
log.debug(OUT_PREFIX + line.strip()) |
|
41
|
|
|
|
|
42
|
1 |
|
if command.returncode == 0: |
|
43
|
1 |
|
return command.stdout.strip() |
|
44
|
|
|
|
|
45
|
1 |
|
elif _ignore: |
|
46
|
1 |
|
log.debug("Ignored error from call to '%s'", program) |
|
47
|
|
|
|
|
48
|
|
|
else: |
|
49
|
1 |
|
message = ( |
|
50
|
|
|
"An external program call failed." + "\n\n" |
|
51
|
|
|
"In worikng directory: " + os.getcwd() + "\n\n" |
|
52
|
|
|
"Execution produced a non-zero return code:" + "\n\n" + |
|
53
|
|
|
program + "\n" + |
|
54
|
|
|
command.stdout |
|
55
|
|
|
) |
|
56
|
1 |
|
raise ShellError(message) |
|
57
|
|
|
|
|
58
|
|
|
|
|
59
|
1 |
|
def mkdir(path): |
|
60
|
1 |
|
call('mkdir', '-p', path) |
|
61
|
|
|
|
|
62
|
|
|
|
|
63
|
1 |
|
def cd(path, _show=True): |
|
64
|
1 |
|
call('cd', path, _show=_show) |
|
65
|
|
|
|
|
66
|
|
|
|
|
67
|
1 |
|
def ln(source, target): |
|
68
|
1 |
|
dirpath = os.path.dirname(target) |
|
69
|
1 |
|
if not os.path.isdir(dirpath): |
|
70
|
1 |
|
mkdir(dirpath) |
|
71
|
1 |
|
call('ln', '-s', source, target) |
|
72
|
|
|
|
|
73
|
|
|
|
|
74
|
1 |
|
def rm(path): |
|
75
|
|
|
call('rm', '-rf', path) |
|
76
|
|
|
|
jacebrowning /
gitman
This check looks for calls to members that are non-existent. These calls will fail.
The member could have been renamed or removed.