[PATCH 1/3] docs/sphinx: Skeleton setup

[Andrew Cooper <andrew.cooper3@citrix.com>]

Sphinx is a documentation system, which is popular for technical writing.  It
uses ReStructuredText as its markup syntax, and is designed for whole-project
documentation, rather than the misc assortment of individual files that we
currently have.

This is a skeleton setup which just enough infrastructure to render an empty
set of pages.  It will become better integrated into Xen's docs system when it
becomes less WIP.

Signed-off-by: Andrew Cooper <andrew.cooper3@citrix.com>
---
CC: George Dunlap <George.Dunlap@eu.citrix.com>
CC: Ian Jackson <ian.jackson@citrix.com>
CC: Jan Beulich <JBeulich@suse.com>
CC: Konrad Rzeszutek Wilk <konrad.wilk@oracle.com>
CC: Stefano Stabellini <sstabellini@kernel.org>
CC: Wei Liu <wei.liu2@citrix.com>
CC: Julien Grall <julien.grall@arm.com>
CC: Roger Pau Monné <roger.pau@citrix.com>
CC: Lars Kurth <lars.kurth@citrix.com>
---
 docs/Makefile                |  12 +++
 docs/conf.py                 | 193 +++++++++++++++++++++++++++++++++++++++++++
 docs/index.rst               |   2 +
 docs/sphinx/requirements.txt |   3 +
 4 files changed, 210 insertions(+)
 create mode 100644 docs/conf.py
 create mode 100644 docs/index.rst
 create mode 100644 docs/sphinx/requirements.txt

diff --git a/docs/Makefile b/docs/Makefile
index 44aebf0..eda4bd8 100644
--- a/docs/Makefile
+++ b/docs/Makefile
@@ -37,6 +37,18 @@ all: build
 .PHONY: build
 build: html txt pdf man-pages figs
 
+# WIP Sphinx/RST documentation.  Use virtualenv to get a suitable environment
+#
+# xen.git$ virtualenv venv-docs
+# xen.git$ . venv-docs/bin/activate
+# (venv-docs)xen.git$ pip install -r docs/sphinx/requirements.txt
+# (venv-docs)xen.git$ make -C docs/ sphinx-html
+# (venv-docs)xen.git$ deactivate
+# xen.git$
+.PHONY: sphinx-html
+sphinx-html:
+	sphinx-build -b html . sphinx/html
+
 .PHONY: html
 html: $(DOC_HTML) html/index.html
 
diff --git a/docs/conf.py b/docs/conf.py
new file mode 100644
index 0000000..73b7b9b
--- /dev/null
+++ b/docs/conf.py
@@ -0,0 +1,193 @@
+# -*- coding: utf-8 -*-
+#
+# Configuration file for the Sphinx documentation builder.
+#
+# This file does only contain a selection of the most common options. For a
+# full list see the documentation:
+# http://www.sphinx-doc.org/en/master/config
+
+# -- Path setup --------------------------------------------------------------
+
+# 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('.'))
+
+
+# -- Project information -----------------------------------------------------
+
+project = u'Xen'
+copyright = u'2019, The Xen development community'
+author = u'The Xen development community'
+
+# Pull the Xen version straight out of the Makefile
+try:
+    xen_ver = xen_subver = xen_extra = None
+
+    for line in open(u"../xen/Makefile"):
+        if line.startswith(u"export XEN_VERSION"):
+            xen_ver = line.split(u"=")[1].strip()
+        elif line.startswith(u"export XEN_SUBVERSION"):
+            xen_subver = line.split(u"=")[1].strip()
+        elif line.startswith(u"export XEN_EXTRAVERSION"):
+            xen_extra = line.split(u"=")[1].split(u"$", 1)[0].strip()
+except:
+    pass
+finally:
+    if xen_ver and xen_subver and xen_extra:
+        version = xen_ver + u"." + xen_subver
+        release = version + xen_extra
+    else:
+        version = release = u"unknown version"
+
+# -- General configuration ---------------------------------------------------
+
+# If your documentation needs a minimal Sphinx version, state it here.
+#
+needs_sphinx = '1.4'
+
+# Add any Sphinx extension module names here, as strings. They can be
+# extensions coming with Sphinx (named 'sphinx.ext.*') or your custom
+# ones.
+extensions = []
+
+# 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'
+
+# 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 pattern also affects html_static_path and html_extra_path.
+exclude_patterns = [u'sphinx/output', 'Thumbs.db', '.DS_Store']
+
+# The name of the Pygments (syntax highlighting) style to use.
+pygments_style = None
+
+primary_domain = 'c'
+highlight_language = 'none'
+
+# -- Options for HTML output -------------------------------------------------
+
+# The theme to use for HTML and HTML Help pages.  See the documentation for
+# a list of builtin themes.
+#
+try:
+    import sphinx_rtd_theme
+    html_theme = 'sphinx_rtd_theme'
+    html_theme_path = [sphinx_rtd_theme.get_html_theme_path()]
+except ImportError:
+    sys.stderr.write('Warning: The Sphinx \'sphinx_rtd_theme\' HTML theme was not found. Make sure you have the theme installed to produce pretty HTML output. Falling back to the default theme.\n')
+
+# 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 = []
+
+# Custom sidebar templates, must be a dictionary that maps document names
+# to template names.
+#
+# The default sidebars (for documents that don't match any pattern) are
+# defined by theme itself.  Builtin themes are using these templates by
+# default: ``['localtoc.html', 'relations.html', 'sourcelink.html',
+# 'searchbox.html']``.
+#
+# html_sidebars = {}
+
+
+# -- Options for HTMLHelp output ---------------------------------------------
+
+# Output file base name for HTML help builder.
+htmlhelp_basename = 'Xendoc'
+
+
+# -- 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, 'Xen.tex', u'Xen Documentation',
+     u'The Xen development community', '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, 'xen', u'Xen 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, 'Xen', u'Xen Documentation',
+     author, 'Xen', 'One line description of project.',
+     'Miscellaneous'),
+]
+
+
+# -- Options for Epub output -------------------------------------------------
+
+# Bibliographic Dublin Core info.
+epub_title = project
+
+# The unique identifier of the text. This can be a ISBN number
+# or the project homepage.
+#
+# epub_identifier = ''
+
+# A unique identification for the text.
+#
+# epub_uid = ''
+
+# A list of files that should not be packed into the epub file.
+epub_exclude_files = ['search.html']
diff --git a/docs/index.rst b/docs/index.rst
new file mode 100644
index 0000000..732ebe0
--- /dev/null
+++ b/docs/index.rst
@@ -0,0 +1,2 @@
+The Xen Hypervisor documentation
+================================
diff --git a/docs/sphinx/requirements.txt b/docs/sphinx/requirements.txt
new file mode 100644
index 0000000..fa1393a
--- /dev/null
+++ b/docs/sphinx/requirements.txt
@@ -0,0 +1,3 @@
+docutils == 0.12
+Sphinx == 1.4.9
+sphinx_rtd_theme
-- 
2.1.4


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