core: Start of the big refactor for PieCrust 3.0. * Everything is a `ContentSource`, including assets directories. * Most content sources are subclasses of the base file-system source. * A source is processed by a "pipeline", and there are 2 built-in pipelines, one for assets and one for pages. The asset pipeline is vaguely functional, but the page pipeline is completely broken right now. * Rewrite the baking process as just running appropriate pipelines on each content item. This should allow for better parallelization.

import shlex
from piecrust.publishing.base import ShellCommandPublisherBase


class ShellCommandPublisher(ShellCommandPublisherBase):
    PUBLISHER_NAME = 'shell'

    def _getCommandArgs(self, ctx):
        target_cmd = self.getConfigValue('command')
        if not target_cmd:
            raise Exception("No command specified for publish target: %s" %
                            self.target)
        args = shlex.split(target_cmd)
        return args