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import os
import subprocess
import dotbot
import dotbot.util
class Shell(dotbot.Plugin):
'''
Run arbitrary shell commands.
'''
_directive = 'shell'
def can_handle(self, directive):
return directive == self._directive
def handle(self, directive, data):
if directive != self._directive:
raise ValueError('Shell cannot handle directive %s' %
directive)
return self._process_commands(data)
def _process_commands(self, data):
success = True
defaults = self._context.defaults().get('shell', {})
for item in data:
stdin = defaults.get('stdin', False)
stdout = defaults.get('stdout', False)
stderr = defaults.get('stderr', False)
quiet = defaults.get('quiet', False)
if isinstance(item, dict):
cmd = item['command']
msg = item.get('description', None)
stdin = item.get('stdin', stdin)
stdout = item.get('stdout', stdout)
stderr = item.get('stderr', stderr)
quiet = item.get('quiet', quiet)
elif isinstance(item, list):
cmd = item[0]
msg = item[1] if len(item) > 1 else None
else:
cmd = item
msg = None
if msg is None:
self._log.verbose(cmd)
elif quiet:
self._log.verbose('%s' % msg)
else:
self._log.verbose('%s [%s]' % (msg, cmd))
ret = dotbot.util.shell_command(
cmd,
cwd=self._context.base_directory(),
enable_stdin=stdin,
enable_stdout=stdout,
enable_stderr=stderr
)
if ret != 0:
success = False
self._log.warning('Command [%s] failed' % cmd)
if success:
self._log.info('All commands have been executed')
else:
self._log.error('Some commands were not successfully executed')
return success
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