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This is ``docutils.parsers.rst`` package. It exports a single class, `Parser`,
the reStructuredText parser.


Usage
=====

1. Create a parser::

       parser = docutils.parsers.rst.Parser()

   Several optional arguments may be passed to modify the parser's behavior.
   Please see `Customizing the Parser`_ below for details.

2. Gather input (a multi-line string), by reading a file or the standard
   input::

       input = sys.stdin.read()

3. Create a new empty `docutils.nodes.document` tree::

       document = docutils.utils.new_document(source, settings)

   See `docutils.utils.new_document()` for parameter details.

4. Run the parser, populating the document tree::

       parser.parse(input, document)


Parser Overview
===============

The reStructuredText parser is implemented as a state machine, examining its
input one line at a time. To understand how the parser works, please first
become familiar with the `docutils.statemachine` module, then see the
`states` module.


Customizing the Parser
----------------------

Anything that isn't already customizable is that way simply because that type
of customizability hasn't been implemented yet.  Patches welcome!

When instantiating an object of the `Parser` class, two parameters may be
passed: ``rfc2822`` and ``inliner``.  Pass ``rfc2822=True`` to enable an
initial RFC-2822 style header block, parsed as a "field_list" element (with
"class" attribute set to "rfc2822").  Currently this is the only body-level
element which is customizable without subclassing.  (Tip: subclass `Parser`
and change its "state_classes" and "initial_state" attributes to refer to new
classes. Contact the author if you need more details.)

The ``inliner`` parameter takes an instance of `states.Inliner` or a subclass.
It handles inline markup recognition.  A common extension is the addition of
further implicit hyperlinks, like "RFC 2822".  This can be done by subclassing
`states.Inliner`, adding a new method for the implicit markup, and adding a
``(pattern, method)`` pair to the "implicit_dispatch" attribute of the
subclass.  See `states.Inliner.implicit_inline()` for details.  Explicit
inline markup can be customized in a `states.Inliner` subclass via the
``patterns.initial`` and ``dispatch`` attributes (and new methods as
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    - `optional_arguments`: The number of optional arguments (default:
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    - `final_argument_whitespace`: A boolean, indicating if the final
      argument may contain whitespace (default: False).

    - `option_spec`: A dictionary, mapping known option names to
      conversion functions such as `int` or `float` (default: {}, no
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      directives/__init__.py module.

      Option conversion functions take a single parameter, the option
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      `ValueError` and `TypeError` exceptions.

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    `final_argument_whitespace` to True; the client code must do any
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    instantiation, the following instance variables are set:

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      `option_spec` above).

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