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1# Authors: David Goodger
2# Contact: goodger@python.org
3# Revision: $Revision: 3598 $
4# Date: $Date: 2005-06-27 13:19:35 +0200 (Mon, 27 Jun 2005) $
5# Copyright: This module has been placed in the public domain.
6
7"""
8This module contains practical examples of Docutils client code.
9
10Importing this module from client code is not recommended; its contents are
11subject to change in future Docutils releases.  Instead, it is recommended
12that you copy and paste the parts you need into your own code, modifying as
13necessary.
14"""
15
16from docutils import core, io
17
18
19def html_parts(input_string, source_path=None, destination_path=None,
20               input_encoding='unicode', doctitle=1, initial_header_level=1):
21    """
22    Given an input string, returns a dictionary of HTML document parts.
23
24    Dictionary keys are the names of parts, and values are Unicode strings;
25    encoding is up to the client.
26
27    Parameters:
28
29    - `input_string`: A multi-line text string; required.
30    - `source_path`: Path to the source file or object.  Optional, but useful
31      for diagnostic output (system messages).
32    - `destination_path`: Path to the file or object which will receive the
33      output; optional.  Used for determining relative paths (stylesheets,
34      source links, etc.).
35    - `input_encoding`: The encoding of `input_string`.  If it is an encoded
36      8-bit string, provide the correct encoding.  If it is a Unicode string,
37      use "unicode", the default.
38    - `doctitle`: Disable the promotion of a lone top-level section title to
39      document title (and subsequent section title to document subtitle
40      promotion); enabled by default.
41    - `initial_header_level`: The initial level for header elements (e.g. 1
42      for "<h1>").
43    """
44    overrides = {'input_encoding': input_encoding,
45                 'doctitle_xform': doctitle,
46                 'initial_header_level': initial_header_level}
47    parts = core.publish_parts(
48        source=input_string, source_path=source_path,
49        destination_path=destination_path,
50        writer_name='html', settings_overrides=overrides)
51    return parts
52
53def html_body(input_string, source_path=None, destination_path=None,
54              input_encoding='unicode', output_encoding='unicode',
55              doctitle=1, initial_header_level=1):
56    """
57    Given an input string, returns an HTML fragment as a string.
58
59    The return value is the contents of the <body> element.
60
61    Parameters (see `html_parts()` for the remainder):
62
63    - `output_encoding`: The desired encoding of the output.  If a Unicode
64      string is desired, use the default value of "unicode" .
65    """
66    parts = html_parts(
67        input_string=input_string, source_path=source_path,
68        destination_path=destination_path,
69        input_encoding=input_encoding, doctitle=doctitle,
70        initial_header_level=initial_header_level)
71    fragment = parts['html_body']
72    if output_encoding != 'unicode':
73        fragment = fragment.encode(output_encoding)
74    return fragment
75
76def internals(input_string, source_path=None, destination_path=None,
77              input_encoding='unicode'):
78    """
79    Return the document tree and publisher, for exploring Docutils internals.
80
81    Parameters: see `html_parts()`.
82    """
83    overrides = {'input_encoding': input_encoding}
84    output, pub = core.publish_programmatically(
85        source_class=io.StringInput, source=input_string,
86        source_path=source_path,
87        destination_class=io.NullOutput, destination=None,
88        destination_path=destination_path,
89        reader=None, reader_name='standalone',
90        parser=None, parser_name='restructuredtext',
91        writer=None, writer_name='null',
92        settings=None, settings_spec=None, settings_overrides=overrides,
93        config_section=None, enable_exit_status=None)
94    return pub.writer.document, pub
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