support sphinx documentation in relcool

6 files changed, 621 insertions, 3 deletions

diff --git a/Makefile b/Makefile
index ef6fbe5..b16560d 100644
--- a/Makefile
+++ b/Makefile
@@ -35,13 +35,23 @@ ifeq ($(REBAR),)
 $(error "Rebar not available on this system")
 endif
 
-# =============================================================================
-# Rules to build the system
-# =============================================================================
 .PHONY: all compile doc clean test dialyzer typer shell distclean pdf get-deps escript
 
 all: compile escript test dialyzer
 
+# =============================================================================
+# Include relevant sub-makefiles.
+# =============================================================================
+# These are not subdirs, they are just additional makefile information
+# that happens to live subdirectories
+
+include $(CURDIR)/docs/docs.mkf
+
+
+# =============================================================================
+# Rules to build the system
+# =============================================================================
+
 get-deps:
 	$(REBAR) get-deps
 	$(REBAR) compile
diff --git a/docs/conf.py b/docs/conf.py
new file mode 100644
index 0000000..f29af4c
--- /dev/null
+++ b/docs/conf.py
@@ -0,0 +1,285 @@
+# -*- coding: utf-8 -*-
+#
+# Relcool documentation build configuration file, created by
+# sphinx-quickstart on Mon Sep 10 10:04:06 2012.
+#
+# 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.
+
+import sys, 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
+# 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 = []
+
+# Add any paths that contain templates here, relative to this directory.
+templates_path = ['_templates']
+
+# The suffix of source filenames.
+source_suffix = '.rst'
+
+# The encoding of source files.
+#source_encoding = 'utf-8-sig'
+
+# The master toctree document.
+master_doc = 'index'
+
+# General information about the project.
+project = u'Relcool'
+copyright = u'2012, Eric B MErritt'
+
+# 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.
+#
+# The short X.Y version.
+version = '0.0.1'
+# The full version, including alpha/beta/rc tags.
+release = '0.0.1'
+
+# 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 = '%B %d, %Y'
+
+# 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 = 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 = []
+
+
+# -- 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 = 'default'
+
+# 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 = 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 = '%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 = 'Relcooldoc'
+
+
+# -- 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', 'Relcool.tex', u'Relcool Documentation',
+   u'Eric B MErritt', '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', 'relcool', u'Relcool Documentation',
+     [u'Eric B MErritt'], 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', 'Relcool', u'Relcool Documentation',
+   u'Eric B MErritt', 'Relcool', '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'
+
+
+# -- Options for Epub output ---------------------------------------------------
+
+# Bibliographic Dublin Core info.
+epub_title = u'Relcool'
+epub_author = u'Eric B MErritt'
+epub_publisher = u'Eric B MErritt'
+epub_copyright = u'2012, Eric B MErritt'
+
+# The language of the text. It defaults to the language option
+# or en if the language is not set.
+#epub_language = ''
+
+# The scheme of the identifier. Typical schemes are ISBN or URL.
+#epub_scheme = ''
+
+# 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 tuple containing the cover image and cover page html template filenames.
+#epub_cover = ()
+
+# HTML files that should be inserted before the pages created by sphinx.
+# The format is a list of tuples containing the path and title.
+#epub_pre_files = []
+
+# HTML files shat should be inserted after the pages created by sphinx.
+# The format is a list of tuples containing the path and title.
+#epub_post_files = []
+
+# A list of files that should not be packed into the epub file.
+#epub_exclude_files = []
+
+# The depth of the table of contents in toc.ncx.
+#epub_tocdepth = 3
+
+# Allow duplicate toc entries.
+#epub_tocdup = True
diff --git a/docs/configuration.rst b/docs/configuration.rst
new file mode 100644
index 0000000..4e84deb
--- /dev/null
+++ b/docs/configuration.rst
@@ -0,0 +1,89 @@
+Configuration
+=============
+
+Configuration of reltool is done via Erlang key, value elements in the
+`relcool.config` file. There are various configuration elements that
+can appear, each affects the running of the system in specific
+ways. Note that these must be complete Erlang terms terminated by a
+`.`.
+
+Paths
+-----
+
+Paths is a way to add additional code paths (that point to Erlang beam
+files) to the system. These are not used for dependency resolution,
+they are only used as code paths. The main use for this is simply to
+provide a non-resolvable path for additional providers.
+
+the path confuration element looks as follows::
+
+    {paths, [<list of directory paths>]}.
+
+So if we wanted to add `/usr/local/lib` and `/opt/lib` to the code
+paths for the system we could add the following::
+
+    {paths, ["/usr/local/lib", "/opt/lib"]}.
+
+to our configuration.
+
+Providers
+---------
+
+Providers are how the Relcool system can be extended by a user. They
+are basically Erlang modules that implement the `rcl_provider`
+behaviour and are available via a code path. See the section on
+providers for more information.
+
+The `providers` element provides a completely new list of providers,
+replacing any providers that may already exist. The provider element
+is as follows::
+
+     {providers, <list of module names>}.
+
+Lets say I have three providers; `my_custom_assembler`,
+`my_rpm_assembler` and `my_deb_assembler`. I could make these the
+complete list of providers by doing the following in my config::
+
+    {providers, [my_custom_assembler,
+                 my_rpm_assembler,
+                 my_deb_assembler]}.
+
+Order is important in the providers as they will be executed in the
+order specified.
+
+Add Providers
+-------------
+
+`add_providers` is very similar to `providers` with the exception that
+the listed providers are added to the end of the current list of
+providers rather then replacing the list all together. Add providres
+looks as follows::
+
+
+     {add_providers, <list of module names>}.
+
+Lets take our previous example but only add `my_rpm_assembler` and
+`my_deb_assembler` to the existing list of providers. We do this by
+adding the following::
+
+    {add_providers, [my_rpm_assembler,
+                     my_deb_assembler]}.
+
+Releases
+--------
+
+Release configuration is the bread and butter, the blood and bones of
+the Relcool system. It provides the framework for realizing
+dependencies in the system. The release element basically minics the
+standard _Erlang/OTP Release Metadata file format:
+http://www.erlang.org/doc/man/rel.html. There are two main
+differences. The first is that you don't have to specify a complete
+list of applications and you may specify version constraints instead
+of hard versions.
+
+
+{release, {relname, vsn},
+  app goals}
+{release, {relname, vsn},
+{erts, vsn},
+app goals}
diff --git a/docs/docs.mkf b/docs/docs.mkf
new file mode 100644
index 0000000..6987063
--- /dev/null
+++ b/docs/docs.mkf
@@ -0,0 +1,154 @@
+# -*- mode: Makefile; fill-column: 80; comment-column: 75; -*-
+# Makefile for Sphinx documentation
+#
+
+# You can set these variables from the command line.
+SPHINXOPTS    =
+SPHINXBUILD   = sphinx-build
+PAPER         =
+BUILDDIR      = _build
+
+# Internal variables.
+PAPEROPT_a4     = -D latex_paper_size=a4
+PAPEROPT_letter = -D latex_paper_size=letter
+ALLSPHINXOPTS   = -d $(BUILDDIR)/doctrees $(PAPEROPT_$(PAPER)) $(SPHINXOPTS) .
+# the i18n builder cannot share the environment and doctrees with the others
+I18NSPHINXOPTS  = $(PAPEROPT_$(PAPER)) $(SPHINXOPTS) .
+
+.PHONY: help clean html dirhtml singlehtml pickle json htmlhelp qthelp devhelp epub latex latexpdf text man changes linkcheck doctest gettext
+
+doc-help:
+	@echo "Please use \`make <target>' where <target> is one of"
+	@echo "  html       to make standalone HTML files"
+	@echo "  dirhtml    to make HTML files named index.html in directories"
+	@echo "  singlehtml to make a single large HTML file"
+	@echo "  pickle     to make pickle files"
+	@echo "  json       to make JSON files"
+	@echo "  htmlhelp   to make HTML files and a HTML help project"
+	@echo "  qthelp     to make HTML files and a qthelp project"
+	@echo "  devhelp    to make HTML files and a Devhelp project"
+	@echo "  epub       to make an epub"
+	@echo "  latex      to make LaTeX files, you can set PAPER=a4 or PAPER=letter"
+	@echo "  latexpdf   to make LaTeX files and run them through pdflatex"
+	@echo "  text       to make text files"
+	@echo "  man        to make manual pages"
+	@echo "  texinfo    to make Texinfo files"
+	@echo "  info       to make Texinfo files and run them through makeinfo"
+	@echo "  gettext    to make PO message catalogs"
+	@echo "  changes    to make an overview of all changed/added/deprecated items"
+	@echo "  linkcheck  to check all external links for integrity"
+	@echo "  doctest    to run all doctests embedded in the documentation (if enabled)"
+
+doc-clean:
+	-rm -rf $(BUILDDIR)/*
+
+html:
+	$(SPHINXBUILD) -b html $(ALLSPHINXOPTS) $(BUILDDIR)/html
+	@echo
+	@echo "Build finished. The HTML pages are in $(BUILDDIR)/html."
+
+dirhtml:
+	$(SPHINXBUILD) -b dirhtml $(ALLSPHINXOPTS) $(BUILDDIR)/dirhtml
+	@echo
+	@echo "Build finished. The HTML pages are in $(BUILDDIR)/dirhtml."
+
+singlehtml:
+	$(SPHINXBUILD) -b singlehtml $(ALLSPHINXOPTS) $(BUILDDIR)/singlehtml
+	@echo
+	@echo "Build finished. The HTML page is in $(BUILDDIR)/singlehtml."
+
+pickle:
+	$(SPHINXBUILD) -b pickle $(ALLSPHINXOPTS) $(BUILDDIR)/pickle
+	@echo
+	@echo "Build finished; now you can process the pickle files."
+
+json:
+	$(SPHINXBUILD) -b json $(ALLSPHINXOPTS) $(BUILDDIR)/json
+	@echo
+	@echo "Build finished; now you can process the JSON files."
+
+htmlhelp:
+	$(SPHINXBUILD) -b htmlhelp $(ALLSPHINXOPTS) $(BUILDDIR)/htmlhelp
+	@echo
+	@echo "Build finished; now you can run HTML Help Workshop with the" \
+	      ".hhp project file in $(BUILDDIR)/htmlhelp."
+
+qthelp:
+	$(SPHINXBUILD) -b qthelp $(ALLSPHINXOPTS) $(BUILDDIR)/qthelp
+	@echo
+	@echo "Build finished; now you can run "qcollectiongenerator" with the" \
+	      ".qhcp project file in $(BUILDDIR)/qthelp, like this:"
+	@echo "# qcollectiongenerator $(BUILDDIR)/qthelp/Relcool.qhcp"
+	@echo "To view the help file:"
+	@echo "# assistant -collectionFile $(BUILDDIR)/qthelp/Relcool.qhc"
+
+devhelp:
+	$(SPHINXBUILD) -b devhelp $(ALLSPHINXOPTS) $(BUILDDIR)/devhelp
+	@echo
+	@echo "Build finished."
+	@echo "To view the help file:"
+	@echo "# mkdir -p $$HOME/.local/share/devhelp/Relcool"
+	@echo "# ln -s $(BUILDDIR)/devhelp $$HOME/.local/share/devhelp/Relcool"
+	@echo "# devhelp"
+
+epub:
+	$(SPHINXBUILD) -b epub $(ALLSPHINXOPTS) $(BUILDDIR)/epub
+	@echo
+	@echo "Build finished. The epub file is in $(BUILDDIR)/epub."
+
+latex:
+	$(SPHINXBUILD) -b latex $(ALLSPHINXOPTS) $(BUILDDIR)/latex
+	@echo
+	@echo "Build finished; the LaTeX files are in $(BUILDDIR)/latex."
+	@echo "Run \`make' in that directory to run these through (pdf)latex" \
+	      "(use \`make latexpdf' here to do that automatically)."
+
+latexpdf:
+	$(SPHINXBUILD) -b latex $(ALLSPHINXOPTS) $(BUILDDIR)/latex
+	@echo "Running LaTeX files through pdflatex..."
+	$(MAKE) -C $(BUILDDIR)/latex all-pdf
+	@echo "pdflatex finished; the PDF files are in $(BUILDDIR)/latex."
+
+text:
+	$(SPHINXBUILD) -b text $(ALLSPHINXOPTS) $(BUILDDIR)/text
+	@echo
+	@echo "Build finished. The text files are in $(BUILDDIR)/text."
+
+man:
+	$(SPHINXBUILD) -b man $(ALLSPHINXOPTS) $(BUILDDIR)/man
+	@echo
+	@echo "Build finished. The manual pages are in $(BUILDDIR)/man."
+
+texinfo:
+	$(SPHINXBUILD) -b texinfo $(ALLSPHINXOPTS) $(BUILDDIR)/texinfo
+	@echo
+	@echo "Build finished. The Texinfo files are in $(BUILDDIR)/texinfo."
+	@echo "Run \`make' in that directory to run these through makeinfo" \
+	      "(use \`make info' here to do that automatically)."
+
+info:
+	$(SPHINXBUILD) -b texinfo $(ALLSPHINXOPTS) $(BUILDDIR)/texinfo
+	@echo "Running Texinfo files through makeinfo..."
+	make -C $(BUILDDIR)/texinfo info
+	@echo "makeinfo finished; the Info files are in $(BUILDDIR)/texinfo."
+
+gettext:
+	$(SPHINXBUILD) -b gettext $(I18NSPHINXOPTS) $(BUILDDIR)/locale
+	@echo
+	@echo "Build finished. The message catalogs are in $(BUILDDIR)/locale."
+
+changes:
+	$(SPHINXBUILD) -b changes $(ALLSPHINXOPTS) $(BUILDDIR)/changes
+	@echo
+	@echo "The overview file is in $(BUILDDIR)/changes."
+
+linkcheck:
+	$(SPHINXBUILD) -b linkcheck $(ALLSPHINXOPTS) $(BUILDDIR)/linkcheck
+	@echo
+	@echo "Link check complete; look for any errors in the above output " \
+	      "or in $(BUILDDIR)/linkcheck/output.txt."
+
+doctest:
+	$(SPHINXBUILD) -b doctest $(ALLSPHINXOPTS) $(BUILDDIR)/doctest
+	@echo "Testing of doctests in the sources finished, look at the " \
+	      "results in $(BUILDDIR)/doctest/output.txt."
diff --git a/docs/index.rst b/docs/index.rst
new file mode 100644
index 0000000..f367ef8
--- /dev/null
+++ b/docs/index.rst
@@ -0,0 +1,22 @@
+.. Relcool documentation master file, created by
+   sphinx-quickstart on Mon Sep 10 10:04:06 2012.
+   You can adapt this file completely to your liking, but it should at least
+   contain the root `toctree` directive.
+
+Welcome to Relcool's documentation!
+===================================
+
+Contents:
+
+.. toctree::
+   :maxdepth: 2
+
+
+
+Indices and tables
+==================
+
+* :ref:`genindex`
+* :ref:`modindex`
+* :ref:`search`
+
diff --git a/docs/overview.rst b/docs/overview.rst
new file mode 100644
index 0000000..77453a3
--- /dev/null
+++ b/docs/overview.rst
@@ -0,0 +1,58 @@
+Overview
+========
+
+Relcool is a tool that, given a specification, assembles
+releases. That is it makes an assessment of all of the Erlang/OTP Apps
+available to it and the constraints that you supply as part of your
+configuration and resolves a complete set of OTP Applications and
+thier versions for use in the release. This may be a bit hard to
+understand if you are not familiar with the way version resolutions
+work in package management systems. So lets look at an example.
+
+Lets say that you have the following OTP Applications
+
+* app1-1.2
+   with dependencies::
+     app2
+     app5
+     app6
+* app1-1.3
+   with dependencies::
+     app2
+     app6
+* app2-2.0
+  with dependencies::
+    app6
+* app2-2.1
+    with dependencies::
+    app6
+    app7
+* app3-2.0
+* app4-1.0.0
+* app5-3.0
+* app6-1.0
+  with dependencies::
+   app3
+* app7-2.0
+
+This is the world of OTP Apps your Relcool knows about (basically OTP
+Apps in the Library Directories you have specified). You have set a
+config that looks like the following::
+
+    {release, {awesome_supercool, "1.0"},
+        [{app1, "1.3", '>='},
+         {app2, "2.0", '>'},
+         app3]}
+
+When the Relcool process has run you will end up with a complete release as follows::
+
+    {release, {awesome_supercool, "1.0"},
+      [{app1, "1.3"},
+       {app2, "2.1"},
+       {app3, "2.0"},
+       {app6, "1.0"},
+       {app7, "2.0"}]}
+
+As you can see that is a fully realied view of your direct and
+transative dependencies based on the world that Relcool knows about
+and the constraints that you specified in your configuration.