esp-idf/docs/conf_common.py

# -*- coding: utf-8 -*-
#
# Common (non-language-specific) configuration for Read The Docs & Sphinx
#
# Based on a Read the Docs Template documentation build configuration file,
# created by sphinx-quickstart on Tue Aug 26 14:19:49 2014.
#
# This file is imported from a language-specific conf.py (ie en/conf.py or
# zh_CN/conf.py)
#
# 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.

from __future__ import print_function
from __future__ import unicode_literals
import sys
import os
import re
import subprocess

# Note: 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

from local_util import run_cmd_get_output, copy_if_modified, call_with_python

# build_docs on the CI server sometimes fails under Python3. This is a workaround:
sys.setrecursionlimit(3500)

try:
    build_dir = os.environ['BUILDDIR']
except KeyError:
    build_dir = '_build'

build_dir = os.path.abspath(build_dir)

# Fill in a default IDF_PATH if it's missing (ie when Read The Docs is building the docs)
try:
    idf_path = os.environ['IDF_PATH']
except KeyError:
    idf_path = os.path.realpath(os.path.join(os.path.dirname(__file__), '..'))

docs_root = os.path.join(idf_path, "docs")

try:
    os.mkdir(build_dir)
except OSError:
    pass

try:
    os.mkdir(os.path.join(build_dir, 'inc'))
except OSError:
    pass

# Generate version-related includes
#
# (Note: this is in a function as it needs to access configuration to get the language)
def generate_version_specific_includes(app):
    print("Generating version-specific includes...")
    version_tmpdir = '{}/version_inc'.format(build_dir)
    call_with_python('{}/gen-version-specific-includes.py {} {}'.format(docs_root, app.config.language, version_tmpdir))
    copy_if_modified(version_tmpdir, '{}/inc'.format(build_dir))

# Generate toolchain download links
print("Generating toolchain download links")
base_url = 'https://dl.espressif.com/dl/'
toolchain_tmpdir = '{}/toolchain_inc'.format(build_dir)
call_with_python('{}/gen-toolchain-links.py ../../tools/toolchain_versions.mk {} {}'.format(docs_root, base_url, toolchain_tmpdir))
copy_if_modified(toolchain_tmpdir, '{}/inc'.format(build_dir))

print("Generating IDF Tools list")
os.environ["IDF_MAINTAINER"] = "1"
tools_rst = os.path.join(builddir, 'idf-tools-inc.rst')
tools_rst_tmp = os.path.join(builddir, 'inc', 'idf-tools-inc.rst')
call_with_python("{}/tools/idf_tools.py gen-doc --output {}".format(idf_path, tools_rst_tmp))
copy_if_modified(tools_rst_tmp, tools_rst)

# http://stackoverflow.com/questions/12772927/specifying-an-online-image-in-sphinx-restructuredtext-format
#
suppress_warnings = ['image.nonlocal_uri']

# -- 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 = ['breathe',
              'link-roles',
              'sphinxcontrib.blockdiag',
              'sphinxcontrib.seqdiag',
              'sphinxcontrib.actdiag',
              'sphinxcontrib.nwdiag',
              'sphinxcontrib.rackdiag',
              'sphinxcontrib.packetdiag',
              'html_redirects',
              'idf_build_system',
              'kconfig_reference',
              'doxygen_idf',
              'sphinx.ext.todo',
              'include_build_file',
              'toctree_filter',
              # from https://github.com/pfalcon/sphinx_selective_exclude
              'sphinx_selective_exclude.eager_only',
              #'sphinx_selective_exclude.search_auto_exclude',
              #'sphinx_selective_exclude.modindex_exclude',
              ]

# sphinx.ext.todo extension parameters
# If the below parameter is True, the extension
# produces output, else it produces nothing.
todo_include_todos = False

# Enabling this fixes cropping of blockdiag edge labels
seqdiag_antialias = True

# Breathe extension variables

# Doxygen regenerates files in 'xml/' directory every time,
# but we copy files to 'xml_in/' only when they change, to speed up
# incremental builds.
breathe_projects = {"esp32-idf": os.path.join(build_dir, "xml_in/")}
breathe_default_project = "esp32-idf"

# Add any paths that contain templates here, relative to this directory.
templates_path = ['_templates']

# The suffix of source filenames.
source_suffix = ['.rst', '.md']

source_parsers = {'.md': 'recommonmark.parser.CommonMarkParser',
                  }

# The encoding of source files.
# source_encoding = 'utf-8-sig'

# The master toctree document.
master_doc = 'index'


# 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.
#

# Readthedocs largely ignores 'version' and 'release', and displays one of
# 'latest', tag name, or branch name, depending on the build type.
# Still, this is useful for non-RTD builds.
# This is supposed to be "the short X.Y version", but it's the only version
# visible when you open index.html.
# Display full version to make things less confusing.
version = run_cmd_get_output('git describe')
# The full version, including alpha/beta/rc tags.
# If needed, nearest tag is returned by 'git describe --abbrev=0'.
release = version
print('Version: {0}  Release: {1}'.format(version, release))

# There are two options for replacing |today|: either, you set today to some
# non-false value, then it is used:
# today = ''
# Else, today_fmt is used as the format for a strftime call.
# today_fmt = '%B %d, %Y'

# List of patterns, relative to source directory, that match files and
# directories to ignore when looking for source files.
exclude_patterns = ['**/inc/**']

# Add target-specific excludes based on tags. Haven't found any better way to do this yet
def update_exclude_patterns(tags):
    if "esp32" not in tags:
        # Exclude ESP32-only document pages so they aren't found in the initial search for .rst files
        # note: in toctrees, these also need to be marked with a :esp32: filter
        for e in ['api-guides/blufi.rst',
                  'api-guides/build-system-legacy.rst',
                  'api-guides/esp-ble-mesh/**',
                  'api-guides/ulp-legacy.rst',
                  'api-guides/unit-tests-legacy.rst',
                  'api-reference/bluetooth/**',
                  'get-started-legacy/**',
                  'gnu-make-legacy.rst']:
            exclude_patterns.append(e)

# The reST default role (used for this markup: `text`) to use for all
# documents.
# default_role = None

# If true, '()' will be appended to :func: etc. cross-reference text.
# add_function_parentheses = True

# If true, the current module name will be prepended to all description
# unit titles (such as .. function::).
# add_module_names = True

# If true, sectionauthor and moduleauthor directives will be shown in the
# output. They are ignored by default.
# show_authors = False

# The name of the Pygments (syntax highlighting) style to use.
pygments_style = 'sphinx'

# A list of ignored prefixes for module index sorting.
# modindex_common_prefix = []

# If true, keep warnings as "system message" paragraphs in the built documents.
# keep_warnings = False


# -- Options for HTML output ----------------------------------------------

# Custom added feature to allow redirecting old URLs
#
# Redirects should be listed in page_redirects.xt
#
with open("../page_redirects.txt") as f:
    lines = [re.sub(" +", " ", l.strip()) for l in f.readlines() if l.strip() != "" and not l.startswith("#")]
    for line in lines:  # check for well-formed entries
        if len(line.split(' ')) != 2:
            raise RuntimeError("Invalid line in page_redirects.txt: %s" % line)
html_redirect_pages = [tuple(l.split(' ')) for l in lines]

# The theme to use for HTML and HTML Help pages.  See the documentation for
# a list of builtin themes.
html_theme = 'sphinx_rtd_theme'

# 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 themes here, relative to this directory.
# html_theme_path = []

# The name for this set of Sphinx documents.  If None, it defaults to
# "<project> v<release> documentation".
# html_title = None

# A shorter title for the navigation bar.  Default is the same as html_title.
# html_short_title = None

# The name of an image file (relative to this directory) to place at the top
# of the sidebar.
html_logo = "../_static/espressif-logo.svg"

# The name of an image file (within the static path) to use as favicon of the
# docs.  This file should be a Windows icon file (.ico) being 16x16 or 32x32
# pixels large.
# html_favicon = None

# 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']

# Add any extra paths that contain custom files (such as robots.txt or
# .htaccess) here, relative to this directory. These files are copied
# directly to the root of the documentation.
# html_extra_path = []

# If not '', a 'Last updated on:' timestamp is inserted at every page bottom,
# using the given strftime format.
# html_last_updated_fmt = '%b %d, %Y'

# If true, SmartyPants will be used to convert quotes and dashes to
# typographically correct entities.
# html_use_smartypants = True

# Custom sidebar templates, maps document names to template names.
# html_sidebars = {}

# Additional templates that should be rendered to pages, maps page names to
# template names.
# html_additional_pages = {}

# If false, no module index is generated.
# html_domain_indices = True

# If false, no index is generated.
# html_use_index = True

# If true, the index is split into individual pages for each letter.
# html_split_index = False

# If true, links to the reST sources are added to the pages.
# html_show_sourcelink = True

# If true, "Created using Sphinx" is shown in the HTML footer. Default is True.
# html_show_sphinx = True

# If true, "(C) Copyright ..." is shown in the HTML footer. Default is True.
# html_show_copyright = True

# If true, an OpenSearch description file will be output, and all pages will
# contain a <link> tag referring to it.  The value of this option must be the
# base URL from which the finished HTML is served.
# html_use_opensearch = ''

# This is the file name suffix for HTML files (e.g. ".xhtml").
# html_file_suffix = None

# Output file base name for HTML help builder.
htmlhelp_basename = 'ReadtheDocsTemplatedoc'


# -- 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': '',
}

# 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 = [
    ('index', 'ReadtheDocsTemplate.tex', u'Read the Docs Template Documentation',
     u'Read the Docs', 'manual'),
]

# The name of an image file (relative to this directory) to place at the top of
# the title page.
# latex_logo = None

# For "manual" documents, if this is true, then toplevel headings are parts,
# not chapters.
# latex_use_parts = False

# If true, show page references after internal links.
# latex_show_pagerefs = False

# If true, show URL addresses after external links.
# latex_show_urls = False

# Documents to append as an appendix to all manuals.
# latex_appendices = []

# If false, no module index is generated.
# latex_domain_indices = True


# -- Options for manual page output ---------------------------------------

# One entry per manual page. List of tuples
# (source start file, name, description, authors, manual section).
man_pages = [
    ('index', 'readthedocstemplate', u'Read the Docs Template Documentation',
     [u'Read the Docs'], 1)
]

# If true, show URL addresses after external links.
# man_show_urls = False


# -- 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 = [
    ('index', 'ReadtheDocsTemplate', u'Read the Docs Template Documentation',
     u'Read the Docs', 'ReadtheDocsTemplate', 'One line description of project.',
     'Miscellaneous'),
]

# Documents to append as an appendix to all manuals.
# texinfo_appendices = []

# If false, no module index is generated.
# texinfo_domain_indices = True

# How to display URL addresses: 'footnote', 'no', or 'inline'.
# texinfo_show_urls = 'footnote'

# If true, do not generate a @detailmenu in the "Top" node's menu.
# texinfo_no_detailmenu = False


# Override RTD CSS theme to introduce the theme corrections
# https://github.com/rtfd/sphinx_rtd_theme/pull/432
def setup(app):
    app.config.build_dir = build_dir
    app.add_stylesheet('theme_overrides.css')
    generate_version_specific_includes(app)