PDF Documentation Build tox target

This patch adds a `pdf-docs` tox target that will build
PDF versions of our docs. As per the Train community goal:

  https://governance.openstack.org/tc/goals/selected/train/pdf-doc-generation.html

Add sphinxcontrib-svg2pdfconverter to doc/requirements.txt
to convert our SVGs.

Change-Id: I887bd71b3304a9a9078cf60c48b02b871dd8146f
Story: 2006105

doc/requirements.txt

@@ -10,7 +10,8 @@
 # automatically be proposed to all the repositories which use it.
 
 sphinx!=1.6.6,!=1.6.7,>=1.6.2,<2.0.0;python_version=='2.7'  # BSD
-sphinx!=1.6.6,!=1.6.7,>=1.6.2;python_version>='3.4'  # BSD
+sphinx>=1.8.0,!=2.1.0,>=1.6.2;python_version>='3.4'  # BSD
+sphinxcontrib-svg2pdfconverter>=0.1.0 # BSD
 openstackdocstheme>=1.20.0 # Apache-2.0
 reno>=2.5.0 # Apache-2.0
 doc8>=0.6.0 # Apache-2.0

doc/source/conf.py

@@ -22,9 +22,7 @@
 # All configuration values have a default; values that are commented out
 # serve to show the default.
 
-import openstackdocstheme
 import pbr.version
-import os
 
 # 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
@@ -42,6 +40,7 @@ import os
 extensions = [
     'sphinx.ext.autodoc',
     'openstackdocstheme',
+    'sphinxcontrib.rsvgconverter',
 ]
 
 # Add any paths that contain templates here, relative to this directory.
@@ -66,16 +65,16 @@ description = 'OpenStack-Ansible deploys OpenStack environments using Ansible.'
 project = 'OpenStack-Ansible'
 role_name = 'os_horizon'
 target_name = 'openstack-ansible-' + role_name
-title = 'OpenStack-Ansible Documentation: ' + role_name + 'role'
+title = 'OpenStack-Ansible Documentation: ' + role_name + ' role'
 
 # openstackdocstheme options
-repository_name = 'openstack/openstack-ansible-os_horizon'
+repository_name = 'openstack/' + target_name
-bug_project = 'openstack-ansible-os_horizon'
+bug_project = project.lower()
 bug_tag = ''
 
 # The link to the browsable source code (for the left hand menu)
 oslosphinx_cgit_link = (
-    "https://git.openstack.org/cgit/openstack/{}".format(target_name)
+    "https://opendev.org/openstack/{}".format(target_name)
 )
 
 # The version info for the project you're documenting, acts as replacement for
@@ -89,17 +88,6 @@ release = version_info.version_string_with_vcs()
 # The short X.Y version.
 version = version_info.canonical_version_string()
 
-# A few variables have to be set for the log-a-bug feature.
-#   gitsha: The SHA checksum of the bug description. Automatically extracted from git log.
-#   bug_tag: Tag for categorizing the bug. Must be set manually.
-# These variables are passed to the logabug code via html_context.
-git_cmd = "/usr/bin/git log | head -n1 | cut -f2 -d' '"
-gitsha = os.popen(git_cmd).read().strip('\n')
-bug_project = project.lower()
-bug_title = "Documentation bug"
-html_context = {"gitsha": gitsha, "bug_tag": "docs",
-                "bug_title": bug_title, "bug_project": bug_project }
-
 # The language for content autogenerated by Sphinx. Refer to documentation
 # for a list of supported languages.
 #
@@ -157,7 +145,7 @@ html_theme = 'openstackdocs'
 # html_theme_options = {}
 
 # Add any paths that contain custom themes here, relative to this directory.
-html_theme_path = [openstackdocstheme.get_html_theme_path()]
+# html_theme_path = [openstackdocstheme.get_html_theme_path()]
 
 # The name for this set of Sphinx documents. If None, it defaults to
 # "<project> v<release> documentation".
@@ -263,10 +251,12 @@ latex_elements = {
 # (source start file, target name, title,
 #  author, documentclass [howto, manual, or own class]).
 latex_documents = [
-    (master_doc, target_name + '.tex',
+    (master_doc, 'doc-' + target_name + '.tex',
-     title, author, 'manual'),
+     title.replace("_", "\_"), author, 'manual'),
 ]
 
+latex_use_xindy = False
+
 # The name of an image file (relative to this directory) to place at the top of
 # the title page.
 # latex_logo = None
@@ -323,3 +313,11 @@ texinfo_documents = [
 
 # If true, do not generate a @detailmenu in the "Top" node's menu.
 # texinfo_no_detailmenu = False
+# -- Options for PDF output --------------------------------------------------
+
+pdf_documents = [
+    (master_doc, target_name,
+     title, author)
+]
+
+locale_dirs = ['locale/']

tox.ini

@@ -35,12 +35,22 @@ setenv =
 [testenv:docs]
 basepython = python3
 deps = -r{toxinidir}/doc/requirements.txt
-commands=
+commands =
     bash -c "rm -rf doc/build"
     doc8 doc
     sphinx-build -b html doc/source doc/build/html
 
 
+[testenv:pdf-docs]
+basepython = python3
+deps = {[testenv:docs]deps}
+whitelist_externals =
+  make
+commands =
+  sphinx-build -W -b latex doc/source doc/build/pdf
+  make -C doc/build/pdf
+
+
 [doc8]
 # Settings for doc8:
 extensions = .rst