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 os.path
import re
import subprocess
from idf_extensions.util import download_file_if_missing

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

config_dir = os.path.abspath(os.path.dirname(__file__))

# 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'
idf_target = ''
# 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',

              'sphinx.ext.todo',

              'sphinxcontrib.blockdiag',
              'sphinxcontrib.seqdiag',
              'sphinxcontrib.actdiag',
              'sphinxcontrib.nwdiag',
              'sphinxcontrib.rackdiag',
              'sphinxcontrib.packetdiag',

              'extensions.html_redirects',
              'extensions.toctree_filter',

              'idf_extensions.include_build_file',
              'idf_extensions.link_roles',
              'idf_extensions.build_system',
              'idf_extensions.esp_err_definitions',
              'idf_extensions.gen_toolchain_links',
              'idf_extensions.gen_version_specific_includes',
              'idf_extensions.kconfig_reference',
              'idf_extensions.run_doxygen',
              'idf_extensions.gen_idf_tools_links',
              'idf_extensions.format_idf_target',

              # from https://github.com/pfalcon/sphinx_selective_exclude
              'sphinx_selective_exclude.eager_only',
              # TODO: determine if we need search_auto_exclude
              # 'sphinx_selective_exclude.search_auto_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


# 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 = subprocess.check_output(['git', 'describe']).strip().decode('utf-8')
# 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/**', '_static', '**/_build']


# Add target-specific excludes based on tags (for the IDF_TARGET). 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/RF_calibration.rst',  # temporary until support re-added in esp_wifi
                  'api-guides/ulp-legacy.rst',
                  'api-guides/unit-tests-legacy.rst',
                  'api-guides/ulp_instruction_set.rst',
                  'api-guides/jtag-debugging/configure-wrover.rst',
                  'api-reference/system/himem.rst',
                  'api-reference/bluetooth/**',
                  'api-reference/peripherals/sdio_slave.rst',
                  'api-reference/peripherals/esp_slave_protocol.rst',
                  'api-reference/peripherals/mcpwm.rst',
                  'api-reference/peripherals/sd_pullup_requirements.rst',
                  'api-reference/peripherals/sdmmc_host.rst',
                  'api-reference/protocols/esp_serial_slave_link.rst',
                  'api-reference/system/ipc.rst',
                  'get-started-legacy/**',
                  'gnu-make-legacy.rst',
                  'hw-reference/esp32/**',
                  ]:
            exclude_patterns.append(e)

    if "esp32s2" 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 ['hw-reference/esp32s2/**',
                  'api-guides/ulps2_instruction_set.rst',
                  'api-reference/peripherals/temp_sensor.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.add_stylesheet('theme_overrides.css')
    app.add_config_value('idf_target', '', 'env')
    # Breathe extension variables (depend on build_dir)
    # note: we generate into xml_in and then copy_if_modified to xml dir
    app.config.breathe_projects = {"esp32-idf": os.path.join(app.config.build_dir, "xml_in/")}
    app.config.breathe_default_project = "esp32-idf"

    setup_diag_font(app)


def setup_diag_font(app):
    # blockdiag and other tools require a font which supports their character set
    # the font file is stored on the download server to save repo size

    font_name = {
        'en': 'DejaVuSans.ttf',
        'zh_CN': 'NotoSansSC-Regular.otf',
    }[app.config.language]

    font_dir = os.path.join(config_dir, '_static')
    assert os.path.exists(font_dir)

    print("Downloading font file %s for %s" % (font_name, app.config.language))
    download_file_if_missing('https://dl.espressif.com/dl/esp-idf/docs/_static/{}'.format(font_name), font_dir)

    font_path = os.path.abspath(os.path.join(font_dir, font_name))
    assert os.path.exists(font_path)

    app.config.blockdiag_fontpath = font_path
    app.config.seqdiag_fontpath = font_path
    app.config.actdiag_fontpath = font_path
    app.config.nwdiag_fontpath = font_path
    app.config.rackdiag_fontpath = font_path
    app.config.packetdiag_fontpath = font_path