# -*- coding: utf-8 -*-
#
# LLVM documentation build configuration file.
#
# 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.
from __future__ import print_function

import sys, os, re
from datetime import date

# 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.
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.intersphinx", "sphinx.ext.todo"]

# When building man pages, we do not use the markdown pages,
# So, we can continue without the myst_parser dependencies.
# Doing so reduces dependencies of some packaged llvm distributions.
try:
    import myst_parser

    extensions.append("myst_parser")
except ImportError:
    if not tags.has("builder-man"):
        raise
else:
    myst_enable_extensions = ["substitution"]

# Automatic anchors for markdown titles
myst_heading_anchors = 6
myst_heading_slug_func = "llvm_slug.make_slug"


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

source_suffix = [".rst", ".md"]

import sphinx

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

# The master toctree document.
master_doc = "index"

# General information about the project.
project = "LLVM"
copyright = "2003-%d, LLVM Project" % date.today().year

# The language for content autogenerated by Sphinx. Refer to documentation
# for a list of supported languages.
# language = None

# 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 = "%Y-%m-%d"

# List of patterns, relative to source directory, that match files and
# directories to ignore when looking for source files.
exclude_patterns = ["_build"]

# 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 = True

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

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


# -- 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 = "llvm-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 = {"nosidebar": False}

# Add any paths that contain custom themes here, relative to this directory.
html_theme_path = ["_themes"]

# 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 = None

# 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"]

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

# 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 = {
    "**": [
        "indexsidebar.html",
        "sourcelink.html",
        "searchbox.html",
    ]
}

# 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 = "LLVMdoc"


# -- 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]).
latex_documents = [
    ("index", "LLVM.tex", "LLVM Documentation", "LLVM project", "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

# If true, figures, tables and code-blocks are automatically numbered if they
# have a caption. 
numfig = True

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

# One entry per manual page. List of tuples
# (source start file, name, description, authors, manual section).
man_pages = []

# Automatically derive the list of man pages from the contents of the command
# guide subdirectory.
basedir = os.path.dirname(__file__)
man_page_authors = "Maintained by the LLVM Team (https://llvm.org/)."
command_guide_subpath = "CommandGuide"
command_guide_path = os.path.join(basedir, command_guide_subpath)
manpages_url = "{page}.html"


def process_md(name):
    file_subpath = os.path.join(command_guide_subpath, name)
    with open(os.path.join(command_guide_path, name)) as f:
        title = f.readline().rstrip("\n")

        m = re.match(r"^# (\S+) - (.+)$", title)
        if m is None:
            print(
                "error: invalid title in %r "
                "(expected '# <name> - <description>')" % file_subpath,
                file=sys.stderr,
            )
        else:
            man_pages.append(
                (
                    file_subpath.replace(".md", ""),
                    m.group(1),
                    m.group(2),
                    man_page_authors,
                    1,
                )
            )


def process_rst(name):
    file_subpath = os.path.join(command_guide_subpath, name)
    with open(os.path.join(command_guide_path, name)) as f:
        title = f.readline().rstrip("\n")
        header = f.readline().rstrip("\n")

        if len(header) != len(title):
            print(
                "error: invalid header in %r (does not match title)" % file_subpath,
                file=sys.stderr,
            )
        if " - " not in title:
            print(
                "error: invalid title in %r "
                "(expected '<name> - <description>')" % file_subpath,
                file=sys.stderr,
            )
        # Split the name out of the title.
        name, description = title.split(" - ", 1)
        man_pages.append(
            (file_subpath.replace(".rst", ""), name, description, man_page_authors, 1)
        )


for name in os.listdir(command_guide_path):
    # Process Markdown files
    if name.endswith(".md"):
        process_md(name)
    # Process ReST files apart from the index page.
    elif name.endswith(".rst") and name != "index.rst":
        process_rst(name)

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

# FIXME: Define intersphinx configuration.
intersphinx_mapping = {}

# Pygment lexer are sometimes out of date (when parsing LLVM for example) or
# wrong. Suppress the warning so the build doesn't abort.
suppress_warnings = ["misc.highlighting_failure"]