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# -*- coding: utf-8 -*-
# Copyright 2018-2023 Mike Fährmann
#
# This program is free software; you can redistribute it and/or modify
# it under the terms of the GNU General Public License version 2 as
# published by the Free Software Foundation.
"""Execute processes"""
from .common import PostProcessor
from .. import util, formatter
import subprocess
import os
if util.WINDOWS:
def quote(s):
s = s.replace('"', '\\"')
return f'"{s}"'
else:
from shlex import quote
class ExecPP(PostProcessor):
def __init__(self, job, options):
PostProcessor.__init__(self, job)
if cmds := options.get("commands"):
self.cmds = [self._prepare_cmd(c) for c in cmds]
execute = self.exec_many
else:
execute, self.args = self._prepare_cmd(options["command"])
if options.get("async", False):
self._exec = self._popen
self.session = False
self.creationflags = 0
if options.get("session"):
if util.WINDOWS:
self.creationflags = subprocess.CREATE_NEW_PROCESS_GROUP
else:
self.session = True
events = options.get("event")
if events is None:
events = ("after",)
elif isinstance(events, str):
events = events.split(",")
job.register_hooks({event: execute for event in events}, options)
if self._archive_init(job, options):
self._archive_register(job)
def _prepare_cmd(self, cmd):
if isinstance(cmd, str):
self._sub = util.re(
r"\{(_directory|_filename|_(?:temp)?path|)\}").sub
return self.exec_string, cmd
else:
return self.exec_list, [formatter.parse(arg) for arg in cmd]
def exec_list(self, pathfmt):
archive = self.archive
kwdict = pathfmt.kwdict
if archive and archive.check(kwdict):
return
kwdict["_directory"] = pathfmt.realdirectory
kwdict["_filename"] = pathfmt.filename
kwdict["_temppath"] = pathfmt.temppath
kwdict["_path"] = pathfmt.realpath
args = [arg.format_map(kwdict) for arg in self.args]
args[0] = os.path.expanduser(args[0])
retcode = self._exec(args, False)
if archive:
archive.add(kwdict)
return retcode
def exec_string(self, pathfmt):
archive = self.archive
if archive and archive.check(pathfmt.kwdict):
return
self.pathfmt = pathfmt
args = self._sub(self._replace, self.args)
retcode = self._exec(args, True)
if archive:
archive.add(pathfmt.kwdict)
return retcode
def exec_many(self, pathfmt):
if archive := self.archive:
if archive.check(pathfmt.kwdict):
return
self.archive = False
retcode = 0
for execute, args in self.cmds:
self.args = args
if retcode := execute(pathfmt):
# non-zero exit status
break
if archive:
self.archive = archive
archive.add(pathfmt.kwdict)
return retcode
def _exec(self, args, shell):
if retcode := self._popen(args, shell).wait():
self.log.warning("'%s' returned with non-zero exit status (%d)",
args, retcode)
return retcode
def _popen(self, args, shell):
self.log.debug("Running '%s'", args)
return util.Popen(
args,
shell=shell,
creationflags=self.creationflags,
start_new_session=self.session,
)
def _replace(self, match):
name = match[1]
if name == "_directory":
return quote(self.pathfmt.realdirectory)
if name == "_filename":
return quote(self.pathfmt.filename)
if name == "_temppath":
return quote(self.pathfmt.temppath)
return quote(self.pathfmt.realpath)
__postprocessor__ = ExecPP
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