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"""Utilities to call shell programs.""" |
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3
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import os |
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import subprocess |
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import logging |
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7
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from . import common |
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from .exceptions import ShellError |
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10
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CMD_PREFIX = "$ " |
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OUT_PREFIX = "> " |
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log = logging.getLogger(__name__) |
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15
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16
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1 |
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def call(name, *args, _show=True, _ignore=False): |
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"""Call a shell program with arguments. |
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:param name: name of program to call |
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:param args: list of command-line arguments |
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:param _show: display the call on stdout |
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:param _ignore: ignore non-zero return codes |
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""" |
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program = CMD_PREFIX + ' '.join([name, *args]) |
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1 |
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if _show: |
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1 |
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common.show(program) |
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else: |
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log.debug(program) |
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if name == 'cd': |
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return os.chdir(args[0]) # 'cd' has no effect in a subprocess |
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command = subprocess.run( |
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[name, *args], universal_newlines=True, |
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stdout=subprocess.PIPE, stderr=subprocess.STDOUT, |
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) |
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for line in command.stdout.splitlines(): |
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log.debug(OUT_PREFIX + line.strip()) |
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if command.returncode == 0: |
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return command.stdout.strip() |
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1 |
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elif _ignore: |
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log.debug("Ignored error from call to '%s'", program) |
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else: |
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1 |
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message = ( |
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"An external program call failed." + "\n\n" |
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"In working directory: " + os.getcwd() + "\n\n" |
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"The following command produced a non-zero return code:" + "\n\n" + |
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program + "\n" + |
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command.stdout |
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) |
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raise ShellError(message) |
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58
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59
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1 |
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def mkdir(path): |
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call('mkdir', '-p', path) |
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def cd(path, _show=True): |
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call('cd', path, _show=_show) |
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def ln(source, target): |
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dirpath = os.path.dirname(target) |
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if not os.path.isdir(dirpath): |
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mkdir(dirpath) |
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call('ln', '-s', source, target) |
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def rm(path): |
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call('rm', '-rf', path) |
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jacebrowning /
gitman
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The member could have been renamed or removed.