Sphinx- Print in a rst file a custom string variable defined in conf.py - python-sphinx

I am defining in conf.py a string variable X that I would like to print in a rst file. Here is what I did :
In conf.py:
X = "MY CUSTOM STRING"
In the rst file:
Using |X|
But the html shows:
instead of showing the content of MY CUSTOM STRING as defined in conf.py
How can I make html show the content of X instead of the letter X ?
The idea is to have X behave just like the variable release that is by default written in conf.py. When we do |release| in a rst file and in conf.py we have release = "0.0.1", then the html show 0.0.1 and not |release| :

Related

Pandoc equivalent to Sphinx's :download: role

Sphinx defines a role :download: that instructs Sphinx to copy the reference file to _downloads.
Does Pandoc has a similar feature?
Pandoc does not have that feature built-in, but it can be added with a few lines of Lua:
local prefix = 'media'
local path = pandoc.path
function Code (code)
if code.attributes.role == 'download' then
local description, filename = code.text:match '(.*) %<(.*)%>$'
local mimetype, content = pandoc.mediabag.fetch(filename)
local mediabag_filename = path.join{
pandoc.utils.sha1(content),
path.filename(filename)
}
if content and mimetype then
pandoc.mediabag.insert(mediabag_filename, mimetype, content)
end
return pandoc.Link(description, path.join{prefix, mediabag_filename})
end
end
Use the script by saving it to a file download-role.lua and the call pandoc with
pandoc --lua-filter=download-role.lua --extract-media=media ...
This will also work when using Markdown:
`this example script <../example.py>`{role=download}

How to include the source line number everywhere in html output in Sphinx?

Let's say I'm writing a custom editor for my RestructuredText/Sphinx stuff, with "live" html output preview. Output is built using Sphinx.
The source files are pure RestructuredText. No code there.
One desirable feature would be that right-clicking on some part of the preview opens the editor at the correct line of the source file.
To achieve that, one way would be to put that line number in every tag of the html file, for example using classes (e.g., class = "... lineno-124"). Or use html comments.
Note that I don't want to add more content to my source files, just that the line number be included everywhere in the output.
An approximate line number would be enough.
Someone knows how to do this in Sphinx, my way or another?
I decided to add <a> tags with a specific class "lineno lineno-nnn" where nnn is the line number in the RestructuredText source.
The directive .. linenocomment:: nnn is inserted before each new block of unindented text in the source, before the actual parsing (using a 'source-read' event hook).
linenocomment is a custom directive that pushes the <a> tag at build time.
Half a solution is still a solution...
import docutils.nodes as dn
from docutils.parsers.rst import Directive
class linenocomment(dn.General,dn.Element):
pass
def visit_linenocomment_html(self,node):
self.body.append(self.starttag(node,'a',CLASS="lineno lineno-{}".format(node['lineno'])))
def depart_linenocomment_html(self,node):
self.body.append('</a>')
class LineNoComment(Directive):
required_arguments = 1
optional_arguments = 0
has_content = False
add_index = False
def run(self):
node = linenocomment()
node['lineno'] = self.arguments[0]
return [node]
def insert_line_comments(app, docname, source):
print(source)
new_source = []
last_line_empty = True
lineno = 0
for line in source[0].split('\n'):
if line.strip() == '':
last_line_empty = True
new_source.append(line)
elif line[0].isspace():
new_source.append(line)
last_line_empty = False
elif not last_line_empty:
new_source.append(line)
else:
last_line_empty = False
new_source.append('.. linenocomment:: {}'.format(lineno))
new_source.append('')
new_source.append(line)
lineno += 1
source[0] = '\n'.join(new_source)
print(source)
def setup(app):
app.add_node(linenocomment,html=(visit_linenocomment_html,depart_linenocomment_html))
app.add_directive('linenocomment', LineNoComment)
app.connect('source-read',insert_line_comments)
return {
'version': 0.1
}

Declare additional dependency to sphinx-build in an extension

TL,DR: From a Sphinx extension, how do I tell sphinx-build to treat an additional file as a dependency? In my immediate use case, this is the extension's source code, but the question could equally apply to some auxiliary file used by the extension.
I'm generating documentation with Sphinx using a custom extension. I'm using sphinx-build to build the documentation. For example, I use this command to generate the HTML (this is the command in the makefile generated by sphinx-quickstart):
sphinx-build -b html -d _build/doctrees . _build/html
Since my custom extension is maintained together with the source of the documentation, I want sphinx-build to treat it as a dependency of the generated HTML (and LaTeX, etc.). So whenever I change my extension's source code, I want sphinx-build to regenerate the output.
How do I tell sphinx-build to treat an additional file as a dependency? That is not mentioned in the toctree, since it isn't part of the source. Logically, this should be something I do from my extension's setup function.
Sample extension (my_extension.py):
from docutils import nodes
from docutils.parsers.rst import Directive
class Foo(Directive):
def run(self):
node = nodes.paragraph(text='Hello world\n')
return [node]
def setup(app):
app.add_directive('foo', Foo)
Sample source (index.rst):
.. toctree::
:maxdepth: 2
.. foo::
Sample conf.py (basically the output of sphinx-quickstart plus my extension):
import sys
import os
sys.path.insert(0, os.path.abspath('.'))
extensions = ['my_extension']
templates_path = ['_templates']
source_suffix = '.rst'
master_doc = 'index'
project = 'Hello directive'
copyright = '2019, Gilles'
author = 'Gilles'
version = '1'
release = '1'
language = None
exclude_patterns = ['_build']
pygments_style = 'sphinx'
todo_include_todos = False
html_theme = 'alabaster'
html_static_path = ['_static']
htmlhelp_basename = 'Hellodirectivedoc'
latex_elements = {
}
latex_documents = [
(master_doc, 'Hellodirective.tex', 'Hello directive Documentation',
'Gilles', 'manual'),
]
man_pages = [
(master_doc, 'hellodirective', 'Hello directive Documentation',
[author], 1)
]
texinfo_documents = [
(master_doc, 'Hellodirective', 'Hello directive Documentation',
author, 'Hellodirective', 'One line description of project.',
'Miscellaneous'),
]
Validation of a solution:
Run make html (or sphinx-build as above).
Modify my_extension.py to replace Hello world by Hello again.
Run make html again.
The generated HTML (_build/html/index.html) must now contain Hello again instead of Hello world.
It looks like the note_dependency method in the build environment API should do what I want. But when should I call it? I tried various events but none seemed to hit the environment object in the right state. What did work was to call it from a directive.
import os
from docutils import nodes
from docutils.parsers.rst import Directive
import sphinx.application
class Foo(Directive):
def run(self):
self.state.document.settings.env.note_dependency(__file__)
node = nodes.paragraph(text='Hello done\n')
return [node]
def setup(app):
app.add_directive('foo', Foo)
If a document contains at least one foo directive, it'll get marked as stale when the extension that introduces this directive changes. This makes sense, although it could get tedious if an extension adds many directives or makes different changes. I don't know if there's a better way.
Inspired by Luc Van Oostenryck's autodoc-C.
As far as I know app.env.note_dependency can be called within the doctree-read to add any file as a dependency to the document currently being read.
So in your use case, I assume this would work:
from typing import Any, Dict
from sphinx.application import Sphinx
import docutils.nodes as nodes
def doctree-read(app: Sphinx, doctree: nodes.document):
app.env.note_dependency(file)
def setup(app: Sphinx):
app.connect("doctree-read", doctree-read)

Is it possible to reuse hyperlink defined in another file in restructuredtext (or sphinx)

Suppose I have two files a.rst and b.rst in the same folder, and a.rst looks like this
.. _foo: http://stackoverflow.com
`foo`_ is a website
It seems using foo in b.rst is not allowed. Is there a way to define hyperlinks and use them in multiple files?
Followup
I used the extlinks extension as Steve Piercy suggested. Its implementation and docstring can be seen here on github.
In my case, I define wikipedia link in my conf.py
extlinks = {'wiki': ('https://en.wikipedia.org/wiki/%s', '')}
and in the .rst files, use them like
:wiki:`Einstein <Albert_Einstein>`
where Einstein will be displayed as a link to https://en.wikipedia.org/wiki/Albert_Einstein
There are at least four possible solutions.
1. repeat yourself
Put your complete reST in each file. You probably don't want that.
2. combined rst_epilog and substitution
This one is clever. Configure the rst_epilog value, in your conf.py along with a substition with the replace directive:
rst_epilog = """
.. |foo| replace:: foo
.. _foo: http://stackoverflow.com
"""
and reST:
|foo|_ is a website
yields:
<a class="reference external" href="http://stackoverflow.com">foo</a>
3. extlinks
For links to external websites where you want to have a base URL and append path segments or arguments, you can use extlinks in your conf.py:
extensions = [
...
'sphinx.ext.extlinks',
...
]
...
extlinks = {'so': ('https://stackoverflow.com/%s', None)}
Then in your reST:
:so:`questions/49016433`
Yields:
<a class="reference external"
href="https://stackoverflow.com/questions/49016433">
https://stackoverflow.com/questions/49016433
</a>
4. intersphinx
For external websites that are documentation generated by Sphinx, then you can use intersphinx, in your conf.py:
extensions = [
...
'sphinx.ext.intersphinx',
...
]
...
intersphinx_mapping = {
'python': ('https://docs.python.org/3', None),
}
Then in your reST:
:py:mod:`doctest`
Yields:
<a class="reference external"
href="https://docs.python.org/3/library/doctest.html#module-doctest"
title="(in Python v3.6)">
<code class="xref py py-mod docutils literal">
<span class="pre">doctest</span>
</code>
</a>
This might come a bit late but I have found a solution that works very neatly for me and it is not among the answers already given.
In my case, I create a file with all the links used in my project, save it as /include/links.rst, and looking something like:
.. _PEP8: https://www.python.org/dev/peps/pep-0008/
.. _numpydoc: https://numpydoc.readthedocs.io/en/latest/format.html
.. _googledoc: https://google.github.io/styleguide/pyguide.html
Then there are the files a.rst and b.rst looking like:
.. include:: /include/links.rst
File A.rst
##########
Click `here <PEP8_>`_ to see the PEP8 coding style
Alternatively, visit either:
- `Numpy Style <numpydoc_>`_
- `Google Style <googledoc_>`_
and
.. include:: /include/links.rst
File B.rst
##########
You can visit `Python's PEP8 Style Guide <PEP8_>`_
For docstrings, you can use either `Numpy's <numpydoc_>`_ or `Google's <googledoc_>`_
respectively.
The produced output for both cases is:
and
respectively.
Moreover, I would like to emphasize the fact of which I was actually really struggling to achieve, to use different names (displayed text) for the same link at different locations and which I have achieved with the double _, one inside the <..._> and another outside.
This is another solution: it is a bit hacky and a little bit different respect to the officially supported way to share external links.
First complete the Setup then:
in conf.py add the commonlinks entry in extensions
in conf.py configure the map of common links:
For example:
extensions = [
...,
'sphinx.ext.commonlinks'
]
commonlinks = {
'issues': 'https://github.com/sphinx-doc/sphinx/issues',
'github': 'https://github.com'
}
Then in .rst files you can do these:
The :github:`_url_` url is aliased to :github:`GitHub` and also to :github:`this`
Setup
All that is needed is to copy into sphinx/ext directory the file commonlinks.py:
# -*- coding: utf-8 -*-
"""
sphinx.ext.commonlinks
~~~~~~~~~~~~~~~~~~~~~~
Extension to save typing and prevent hard-coding of common URLs in the reST
files.
This adds a new config value called ``commonlinks`` that is created like this::
commonlinks = {'exmpl': 'http://example.com/mypage.html', ...}
Now you can use e.g. :exmpl:`foo` in your documents. This will create a
link to ``http://example.com/mypage.html``. The link caption depends on the
role content:
- If it is ``_url_``, the caption will be the full URL.
- If it is a string, the caption will be the role content.
"""
from six import iteritems
from docutils import nodes, utils
import sphinx
from sphinx.util.nodes import split_explicit_title
def make_link_role(base_url):
def role(typ, rawtext, text, lineno, inliner, options={}, content=[]):
text = utils.unescape(text)
if text == '_url_':
title = base_url
else:
title = text
pnode = nodes.reference(title, title, internal=False, refuri=base_url)
return [pnode], []
return role
def setup_link_roles(app):
for name, base_url in iteritems(app.config.commonlinks):
app.add_role(name, make_link_role(base_url))
def setup(app):
app.add_config_value('commonlinks', {}, 'env')
app.connect('builder-inited', setup_link_roles)
return {'version': sphinx.__display_version__, 'parallel_read_safe': True}
To locate the sphinx installation directory one way is:
$ python 3
> import sphinx
> sphinx
<module 'sphinx' from '/usr/local/lib/python3.5/dist-packages/sphinx/__init__.py'>
then:
% cp commonlinks.py /usr/local/lib/python3.5/dist-packages/sphinx/ext

Sphinx pdfbuilder format not resolved, probably missing URL

I am trying to generate a pdf using rst2pdf, but keep getting the error "format not resolved, probably missing URL or undefined destination for target".
I use sphinx to generate the .rst files and am able to generate the HTML output just fine.
To generate the pdf I followed the instructions at: https://gist.github.com/alfredodeza/7fb5c667addb1c6963b9
Directory Structure:
- sphinxtext
* docs
** source
** build
* test.py
Conf.py:
# -*- coding: utf-8 -*-
#
# Test documentation build configuration file, created by
# sphinx-quickstart on Fri Jun 30 12:08:40 2017.
#
# This file is execfile()d with the current directory set to its
# containing dir.
#
# Note that not all possible configuration values are present in this
# autogenerated file.
#
# All configuration values have a default; values that are commented out
# serve to show the default.
# If extensions (or modules to document with autodoc) are in another directory,
# add these directories to sys.path here. If the directory is relative to the
# documentation root, use os.path.abspath to make it absolute, like shown here.
#
import os
import sys
sys.path.insert(0, os.path.abspath('..\..'))
# -- General configuration ------------------------------------------------
# If your documentation needs a minimal Sphinx version, state it here.
#
# needs_sphinx = '1.0'
# Add any Sphinx extension module names here, as strings. They can be
# extensions coming with Sphinx (named 'sphinx.ext.*') or your custom
# ones.
extensions = ['sphinx.ext.autodoc',
'sphinx.ext.coverage','rst2pdf.pdfbuilder']
# Add any paths that contain templates here, relative to this directory.
templates_path = ['_templates']
# The suffix(es) of source filenames.
# You can specify multiple suffix as a list of string:
#
# source_suffix = ['.rst', '.md']
source_suffix = '.rst'
# The master toctree document.
master_doc = 'index'
# General information about the project.
project = u'Test'
copyright = u'2017, m.a.'
author = u'm.a.'
# The version info for the project you're documenting, acts as replacement for
# |version| and |release|, also used in various other places throughout the
# built documents.
#
# The short X.Y version.
version = u'1.0.0'
# The full version, including alpha/beta/rc tags.
release = u'1.0.0'
# The language for content autogenerated by Sphinx. Refer to documentation
# for a list of supported languages.
#
# This is also used if you do content translation via gettext catalogs.
# Usually you set "language" from the command line for these cases.
language = None
# List of patterns, relative to source directory, that match files and
# directories to ignore when looking for source files.
# This patterns also effect to html_static_path and html_extra_path
exclude_patterns = []
# The name of the Pygments (syntax highlighting) style to use.
pygments_style = 'sphinx'
# If true, `todo` and `todoList` produce output, else they produce nothing.
todo_include_todos = False
# -- Options for HTML output ----------------------------------------------
# The theme to use for HTML and HTML Help pages. See the documentation for
# a list of builtin themes.
#
html_theme = 'alabaster'
# Theme options are theme-specific and customize the look and feel of a theme
# further. For a list of options available for each theme, see the
# documentation.
#
# html_theme_options = {}
# Add any paths that contain custom static files (such as style sheets) here,
# relative to this directory. They are copied after the builtin static files,
# so a file named "default.css" will overwrite the builtin "default.css".
html_static_path = ['_static']
# -- Options for HTMLHelp output ------------------------------------------
# Output file base name for HTML help builder.
htmlhelp_basename = 'Testdoc'
# -- Options for LaTeX output ---------------------------------------------
latex_elements = {
# The paper size ('letterpaper' or 'a4paper').
#
'papersize': 'letterpaper',
# The font size ('10pt', '11pt' or '12pt').
#
'pointsize': '10pt',
# Additional stuff for the LaTeX preamble.
#
'preamble': '',
# Latex figure (float) alignment
#
# 'figure_align': 'htbp',
}
# Grouping the document tree into LaTeX files. List of tuples
# (source start file, target name, title,
# author, documentclass [howto, manual, or own class]).
latex_documents = [
(master_doc, 'Test.tex', u'Test Documentation',
u'm.a.', 'manual'),
]
# -- Options for manual page output ---------------------------------------
# One entry per manual page. List of tuples
# (source start file, name, description, authors, manual section).
man_pages = [
(master_doc, 'test', u'Test Documentation',
[author], 1)
]
# -- Options for Texinfo output -------------------------------------------
# Grouping the document tree into Texinfo files. List of tuples
# (source start file, target name, title, author,
# dir menu entry, description, category)
texinfo_documents = [
(master_doc, 'Test', u'Test Documentation',
author, 'Test', 'One line description of project.',
'Miscellaneous'),
]
# -- Options for pdf output -------------------------------------------
pdf_documents = [('index', u'rst2pdf', u'Sample rst2pdf doc', u'Your Name'),]
# index - master document
# rst2pdf - name of the generated pdf
# Sample rst2pdf doc - title of the pdf
# Your Name - author name in the pdf
test.py
class Test(object):
'''
Test class
'''
def __init__(self,**kwargs):
"""
Constructor
"""
def some_func(self,a,b,c,d,e,f,g):
"""
Function that does something TEST
:param a: Identifier
:param b: b
:param c: c
:param d: d
:param e: e
:param f: f
:param g: g
:type a: int
:type b: float
:type c: float
:type d: float
:type e: float
:type f: float
:type h: float
:returns: Test obj
:Example:
>>> test=Test()
>>> test.some_func(10, 42164., 0.0, 0., -132.0, 0.0, 0.0)
"""
self.a=a
self.b = b
self.c = c
self.d = d
self.e = e
self.f = f
self.g = g
return self
When building as html I see the following warning: checking consistency... C:\PATH\docs\source\modules.rst: WARNING: document isn't included in any toctree
My index.rst file:
.. Test documentation master file, created by
sphinx-quickstart on Fri Jun 30 12:08:40 2017.
You can adapt this file completely to your liking, but it should at least
contain the root toctree directive.
Welcome to Test's documentation!
================================
.. toctree::
:maxdepth: 2
:caption: Contents:
test
Indices and tables
==================
* :ref:`genindex`
* :ref:`modindex`
* :ref:`search`
My test.rst:
Test Module!
================================
.. automodule:: test
:members:
This has now been resolved in rst2pdf via PR 619.
You can install the version of rst2pdf that has this fix by doing this:
$ cd {some directory where you keep 3rd-party projects, e.g. ~/projects}
$ git clone https://github.com/rst2pdf/rst2pdf.git
$ cd rst2pdf
$ python setup.py install
If you are still getting this message in 2021, it likely means rst2pdf can't figure out where one or more of your links is pointed. For example, I had in-page nav links in my .rst code like this that were ok when building HTML but causing the error referred to by the OP during PDF generation:
`Back to top ↑ <#top>`_
The most reliable solution seems to be to remove these in-page links.
Alternatively, you could just convert these implicit links to raw html blocks like below, which could be a solution if you can get rst2pdf to render raw html using xhtml2pdf (this isn't working for me, but perhaps someone else can get it).
.. |top| raw:: html
Back to top ↑
|top|
Note that in this alternative solution, the in-page links probably will not work in most PDF viewers, so this is really only a solution to get .rst files to compile to both PDF and HTML (as the OP asked), rather than one that will allow identical behavior.

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