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A Sphinx extension to check code blocks with external tools

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Sphinx awesome codelinter

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The awesome codelinter extension for the Sphinx documentation generator lets you check that code blocks are valid or follow a preferred style. The extension lets you run an external tool, such as a linter, over all code blocks in your Sphinx documentation.

Install

Install the extension:

pip install sphinxawesome-codelinter

This Sphinx extension works with Python versions newer than 3.8 and recent Sphinx releases.

Configure

To enable this extension in Sphinx, add it to the list of extensions in the Sphinx configuration file conf.py:

extensions = ["sphinxawesome.codelinter"]

To use an external tool to check code blocks, add the language and tool as key-value pairs to the codelinter_languages dictionary. By default, the dictionary is empty, so no code blocks will be processed unless added.

For example, to pass all JSON blocks to Python's built-in JSON module, use:

codelinter_languages = {
  "json": "python -m json.tool"
}

The Python command python -m json.tool returns an error for non-valid JSON code. To lint YAML code blocks, install the yamllint tool and add:

codelinter_languages = {
  "yaml": "yamllint -"
}

The - tells yamllint to read from stdin. You can write your own tools that read from stdin and write to stdout or stderr. They should return 0 if no errors are found, a non-zero value otherwise.

You can use any reStructuredText directive that gets parsed as a literal_block node. For example, you can use .. code-block:: json, .. code:: json, or ..literalinclude:: <filename> to include code from files.

.. literalinclude:: code.json
   :language: json

Caution: The command you add to the codelinter_languages dictionary is called as provided. No additional safe-guards are in place to prevent abuse.

Use

The awesome codelinter extension runs as a Sphinx builder. Run sphinx-build -b codelinter to check your code blocks. If the codelinter tool returns a non-zero value, a warning is logged. To turn warnings into errors and stop the build process, use sphinx-build -W.

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