2deba45588
i think it only makes sense to have an "opinion" for command line interface in this project, and we probably need more `wutta` subcommands too but we'll see. main motivation for this currently is to allow poser apps to define their own CLI, in particular e.g. `poser install`
105 lines
2.4 KiB
ReStructuredText
105 lines
2.4 KiB
ReStructuredText
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Custom Commands
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===============
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WuttJamaican comes with :doc:`/narr/cli/builtin`.
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Using the same framework, each :term:`package` can define additional
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top-level :term:`command(s)<command>` and
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:term:`subcommands<subcommand>` as needed.
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Top-Level Command
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-----------------
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You must "define" *and* "register" your top-level command. Assuming a
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basic Poser example:
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.. code-block:: none
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poser-project
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├── poser
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│ ├── __init__.py
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│ └── cli.py
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└── pyproject.toml
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Add the command definition to the ``poser.cli`` module::
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from wuttjamaican.cli import make_typer
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poser_typer = make_typer(
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name='poser',
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help="Poser - the killer app"
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)
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Then register the command as script in ``pyproject.toml``:
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.. code-block:: toml
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[project.scripts]
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poser = "poser.cli:poser_typer"
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Then reinstall your project:
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.. code-block:: sh
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pip install -e ~/src/poser
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And now you can run your command:
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.. code-block:: sh
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poser --help
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But it won't really do anything until you add subcommands.
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Subcommands
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-----------
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You must "define" the subcommand of course, but do not need to
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"register" it. (That happens via function decorator; see below.)
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However you *do* need to ensure all modules containing subcommands are
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"eagerly imported" so the runtime discovery process finds everything.
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Here we'll define the ``poser hello`` subcommand, by adding it to our
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``poser.cli`` module (from example above)::
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import sys
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import typer
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from wuttjamaican.cli import make_typer
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# top-level command
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poser_typer = make_typer(
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name='poser',
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help="Poser - the killer app"
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)
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# nb. function decorator will auto-register the subcommand
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@poser_typer.command()
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def hello(
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ctx: typer.Context,
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):
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"""
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Hello world example
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"""
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config = ctx.parent.wutta_config
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app = config.get_app()
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name = config.get('hello.name', default="WhoAreYou")
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sys.stdout.write(f'hello {name}\n')
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title = app.get_title()
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sys.stdout.write(f'from {title}\n')
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# TODO: you may need to import other modules here, if they contain
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# subcommands and would not be automatically imported otherwise.
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# nb. *this* current module *is* automatically imported, only
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# because of the top-level command registration in pyproject.toml
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No need to re-install, you can now use the subcommand:
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.. code-block:: sh
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poser hello --help
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