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HTMLWriter.jl
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"""
A module for rendering `Document` objects to HTML.
# Keywords
[`HTMLWriter`](@ref) uses the following additional keyword arguments that can be passed to
[`Documenter.makedocs`](@ref): `authors`, `pages`, `sitename`, `version`.
The behavior of [`HTMLWriter`](@ref) can be further customized by setting the `format`
keyword of [`Documenter.makedocs`](@ref) to a [`HTML`](@ref), which accepts the following
keyword arguments: `analytics`, `assets`, `canonical`, `disable_git`, `edit_link`,
`prettyurls`, `collapselevel`, `sidebar_sitename`, `highlights`, `mathengine` and `footer`.
**`sitename`** is the site's title displayed in the title bar and at the top of the
*navigation menu. This argument is mandatory for [`HTMLWriter`](@ref).
**`pages`** defines the hierarchy of the navigation menu.
# Experimental keywords
**`version`** specifies the version string of the current version which will be the
selected option in the version selector. If this is left empty (default) the version
selector will be hidden. The special value `git-commit` sets the value in the output to
`git:{commit}`, where `{commit}` is the first few characters of the current commit hash.
# `HTML` `Plugin` options
The [`HTML`](@ref) [`Documenter.Plugin`](@ref) provides additional customization options
for the [`HTMLWriter`](@ref). For more information, see the [`HTML`](@ref) documentation.
# Page outline
The [`HTMLWriter`](@ref) makes use of the page outline that is determined by the
headings. It is assumed that if the very first block of a page is a level 1 heading,
then it is intended as the page title. This has two consequences:
1. It is then used to automatically determine the page title in the navigation menu
and in the `<title>` tag, unless specified in the `.pages` option.
2. If the first heading is interpreted as being the page title, it is not displayed
in the navigation sidebar.
"""
module HTMLWriter
using Dates: Dates, @dateformat_str, now
import Markdown
import JSON
import ...Documenter:
Anchors,
Builder,
Documents,
Expanders,
Documenter,
Utilities,
Writers
using ...Utilities: Default
using ...Utilities.JSDependencies: JSDependencies, json_jsescape
import ...Utilities.DOM: DOM, Tag, @tags
using ...Utilities.MDFlatten
export HTML
"Data attribute for the script inserting a wraning for outdated docs."
const OUTDATED_VERSION_ATTR = "data-outdated-warner"
"List of Documenter native themes."
const THEMES = ["documenter-light", "documenter-dark"]
"The root directory of the HTML assets."
const ASSETS = normpath(joinpath(@__DIR__, "..", "..", "assets", "html"))
"The directory where all the Sass/SCSS files needed for theme building are."
const ASSETS_SASS = joinpath(ASSETS, "scss")
"Directory for the compiled CSS files of the themes."
const ASSETS_THEMES = joinpath(ASSETS, "themes")
struct HTMLAsset
class :: Symbol
uri :: String
islocal :: Bool
function HTMLAsset(class::Symbol, uri::String, islocal::Bool)
if !islocal && match(r"^https?://", uri) === nothing
error("Remote asset URL must start with http:// or https://")
end
class in [:ico, :css, :js] || error("Unrecognised asset class $class for `$(uri)`")
new(class, uri, islocal)
end
end
"""
asset(uri)
Can be used to pass non-local web assets to [`HTML`](@ref), where `uri` should be an absolute
HTTP or HTTPS URL.
It accepts the following keyword arguments:
**`class`** can be used to override the asset class, which determines how exactly the asset
gets included in the HTML page. This is necessary if the class can not be determined
automatically (default).
Should be one of: `:js`, `:css` or `:ico`. They become a `<script>`,
`<link rel="stylesheet" type="text/css">` and `<link rel="icon" type="image/x-icon">`
elements in `<head>`, respectively.
**`islocal`** can be used to declare the asset to be local. The `uri` should then be a path
relative to the documentation source directory (conventionally `src/`). This can be useful
when it is necessary to override the asset class of a local asset.
# Usage
```julia
Documenter.HTML(assets = [
# Standard local asset
"assets/extra_styles.css",
# Standard remote asset (extension used to determine that class = :js)
asset("https://example.com/jslibrary.js"),
# Setting asset class manually, since it can't be determined manually
asset("https://example.com/fonts", class = :css),
# Same as above, but for a local asset
asset("asset/foo.script", class=:js, islocal=true),
])
```
"""
function asset(uri; class = nothing, islocal=false)
if class === nothing
class = assetclass(uri)
(class === nothing) && error("""
Unable to determine asset class for: $(uri)
It can be set explicitly with the `class` keyword argument.
""")
end
HTMLAsset(class, uri, islocal)
end
function assetclass(uri)
# TODO: support actual proper URIs
ext = splitext(uri)[end]
ext == ".ico" ? :ico :
ext == ".css" ? :css :
ext == ".js" ? :js : :unknown
end
abstract type MathEngine end
"""
KaTeX(config::Dict = <default>, override = false)
An instance of the `KaTeX` type can be passed to [`HTML`](@ref) via the `mathengine` keyword
to specify that the [KaTeX rendering engine](https://katex.org/) should be used in the HTML
output to render mathematical expressions.
A dictionary can be passed via the `config` argument to configure KaTeX. It becomes the
[options argument of `renderMathInElement`](https://katex.org/docs/autorender.html#api). By
default, Documenter only sets a custom `delimiters` option.
By default, the user-provided dictionary gets _merged_ with the default dictionary (i.e. the
resulting configuration dictionary will contain the values from both dictionaries, but e.g.
setting your own `delimiters` value will override the default). This can be overridden by
setting `override` to `true`, in which case the default values are ignored and only the
user-provided dictionary is used.
"""
struct KaTeX <: MathEngine
config :: Dict{Symbol,Any}
function KaTeX(config::Union{Dict,Nothing} = nothing, override=false)
default = Dict(
:delimiters => [
Dict(:left => raw"$", :right => raw"$", display => false),
Dict(:left => raw"$$", :right => raw"$$", display => true),
Dict(:left => raw"\[", :right => raw"\]", display => true),
]
)
new((config === nothing) ? default : override ? config : merge(default, config))
end
end
"""
MathJax2(config::Dict = <default>, override = false)
An instance of the `MathJax2` type can be passed to [`HTML`](@ref) via the `mathengine`
keyword to specify that the [MathJax v2 rendering engine](https://www.mathjax.org/) should be
used in the HTML output to render mathematical expressions.
A dictionary can be passed via the `config` argument to configure MathJax. It gets passed to
the [`MathJax.Hub.Config`](https://docs.mathjax.org/en/v2.7-latest/options/) function. By
default, Documenter sets custom configurations for `tex2jax`, `config`, `jax`, `extensions`
and `Tex`.
By default, the user-provided dictionary gets _merged_ with the default dictionary (i.e. the
resulting configuration dictionary will contain the values from both dictionaries, but e.g.
setting your own `tex2jax` value will override the default). This can be overridden by
setting `override` to `true`, in which case the default values are ignored and only the
user-provided dictionary is used.
The URL of the MathJax JS file can be overridden using the `url` keyword argument (e.g. to
use a particular minor version).
"""
struct MathJax2 <: MathEngine
config :: Dict{Symbol,Any}
url :: String
function MathJax2(config::Union{Dict,Nothing} = nothing, override=false; url = "")
default = Dict(
:tex2jax => Dict(
"inlineMath" => [["\$","\$"], ["\\(","\\)"]],
"processEscapes" => true
),
:config => ["MMLorHTML.js"],
:jax => [
"input/TeX",
"output/HTML-CSS",
"output/NativeMML"
],
:extensions => [
"MathMenu.js",
"MathZoom.js",
"TeX/AMSmath.js",
"TeX/AMSsymbols.js",
"TeX/autobold.js",
"TeX/autoload-all.js"
],
:TeX => Dict(:equationNumbers => Dict(:autoNumber => "AMS"))
)
new((config === nothing) ? default : override ? config : merge(default, config), url)
end
end
@deprecate MathJax(config::Union{Dict,Nothing} = nothing, override=false) MathJax2(config, override) false
@doc "deprecated – Use [`MathJax2`](@ref) instead" MathJax
"""
MathJax3(config::Dict = <default>, override = false)
An instance of the `MathJax3` type can be passed to [`HTML`](@ref) via the `mathengine`
keyword to specify that the [MathJax v3 rendering engine](https://www.mathjax.org/) should be
used in the HTML output to render mathematical expressions.
A dictionary can be passed via the `config` argument to configure MathJax. It gets passed to
[`Window.MathJax`](https://docs.mathjax.org/en/latest/options/) function. By default,
Documenter specifies in the key `tex` that `\$...\$` and `\\(...\\)` denote inline math, that AMS
style tags should be used and the `base`, `ams` and `autoload` packages should be imported.
The key `options`, by default, specifies which HTML classes to ignore and which to process
using MathJax.
By default, the user-provided dictionary gets _merged_ with the default dictionary (i.e. the
resulting configuration dictionary will contain the values from both dictionaries, but e.g.
setting your own `tex` value will override the default). This can be overridden by
setting `override` to `true`, in which case the default values are ignored and only the
user-provided dictionary is used.
The URL of the MathJax JS file can be overridden using the `url` keyword argument (e.g. to
use a particular minor version).
"""
struct MathJax3 <: MathEngine
config :: Dict{Symbol,Any}
url :: String
function MathJax3(config::Union{Dict,Nothing} = nothing, override=false; url = "")
default = Dict(
:tex => Dict(
"inlineMath" => [["\$","\$"], ["\\(","\\)"]],
"tags" => "ams",
"packages" => ["base", "ams", "autoload"],
),
:options => Dict(
"ignoreHtmlClass" => "tex2jax_ignore",
"processHtmlClass" => "tex2jax_process",
)
)
new((config === nothing) ? default : override ? config : merge(default, config), url)
end
end
"""
HTML(kwargs...)
Sets the behavior of [`HTMLWriter`](@ref).
# Keyword arguments
**`prettyurls`** (default `true`) -- allows toggling the pretty URLs feature.
By default (i.e. when `prettyurls` is set to `true`), Documenter creates a directory
structure that hides the `.html` suffixes from the URLs (e.g. by default `src/foo.md`
becomes `src/foo/index.html`, but can be accessed with via `src/foo/` in the browser). This
structure is preferred when publishing the generate HTML files as a website (e.g. on GitHub
Pages), which is Documenter's primary use case.
If `prettyurls = false`, then Documenter generates `src/foo.html` instead, suitable for
local documentation builds, as browsers do not normally resolve `foo/` to `foo/index.html`
for local files.
To have pretty URLs disabled in local builds, but still have them enabled for the automatic
CI deployment builds, you can set `prettyurls = get(ENV, "CI", nothing) == "true"` (the
specific environment variable you will need to check may depend on the CI system you are
using, but this will work on Travis CI).
**`disable_git`** can be used to disable calls to `git` when the document is not
in a Git-controlled repository. Without setting this to `true`, Documenter will throw
an error and exit if any of the Git commands fail. The calls to Git are mainly used to
gather information about the current commit hash and file paths, necessary for constructing
the links to the remote repository.
**`edit_link`** can be used to specify which branch, tag or commit (when passed a `String`)
in the remote repository the "Edit on ..." links point to. If a special `Symbol` value
`:commit` is passed, the current commit will be used instead. If set to `nothing`, the
link edit link will be hidden altogether. Default value is `"master"`, making the edit link
point to the master branch.
**`canonical`** specifies the canonical URL for your documentation. We recommend
you set this to the base url of your stable documentation, e.g. `https://juliadocs.github.io/Documenter.jl/stable`.
This allows search engines to know which version to send their users to. [See
wikipedia for more information](https://en.wikipedia.org/wiki/Canonical_link_element).
Default is `nothing`, in which case no canonical link is set.
**`analytics`** can be used specify the Google Analytics tracking ID.
**`assets`** can be used to include additional assets (JS, CSS, ICO etc. files). See below
for more information.
**`sidebar_sitename`** determines whether the site name is shown in the sidebar or not.
Setting it to `false` can be useful when the logo already contains the name of the package.
Defaults to `true`.
**`highlights`** can be used to add highlighting for additional languages. By default,
Documenter already highlights all the ["Common" highlight.js](https://highlightjs.org/download/)
languages and Julia (`julia`, `julia-repl`). Additional languages must be specified by"
their filenames as they appear on [CDNJS](https://cdnjs.com/libraries/highlight.js) for the
highlight.js version Documenter is using. E.g. to include highlighting for YAML and LLVM IR,
you would set `highlights = ["llvm", "yaml"]`. Note that no verification is done whether the
provided language names are sane.
**`mathengine`** specifies which LaTeX rendering engine will be used to render the math
blocks. The options are either [KaTeX](https://katex.org/) (default),
[MathJax v2](https://www.mathjax.org/), or [MathJax v3](https://www.mathjax.org/), enabled by
passing an instance of [`KaTeX`](@ref), [`MathJax2`](@ref), or
[`MathJax3`](@ref) objects, respectively. The rendering engine can further be customized by
passing options to the [`KaTeX`](@ref) or [`MathJax2`](@ref)/[`MathJax3`](@ref) constructors.
**`lang`** specifies the [`lang` attribute](https://developer.mozilla.org/en-US/docs/Web/HTML/Global_attributes/lang)
of the top-level `<html>` element, declaring the language of the generated pages. The default
value is `"en"`.
**`footer`** can be a valid single-line markdown `String` or `nothing` and is displayed below
the page navigation. Defaults to `"Powered by [Documenter.jl](https://github.com/JuliaDocs/Documenter.jl)
and the [Julia Programming Language](https://julialang.org/)."`.
**`warn_outdated`** inserts a warning if the current page is not the newest version of the
documentation.
# Default and custom assets
Documenter copies all files under the source directory (e.g. `/docs/src/`) over
to the compiled site. It also copies a set of default assets from `/assets/html/`
to the site's `assets/` directory, unless the user already had a file with the
same name, in which case the user's files overrides the Documenter's file.
This could, in principle, be used for customizing the site's style and scripting.
The HTML output also links certain custom assets to the generated HTML documents,
specifically a logo and additional javascript files.
The asset files that should be linked must be placed in `assets/`, under the source
directory (e.g `/docs/src/assets`) and must be on the top level (i.e. files in
the subdirectories of `assets/` are not linked).
For the **logo**, Documenter checks for the existence of `assets/logo.{svg,png,webp,gif,jpg,jpeg}`,
in this order. The first one it finds gets displayed at the top of the navigation sidebar.
It will also check for `assets/logo-dark.{svg,png,webp,gif,jpg,jpeg}` and use that for dark
themes.
Additional JS, ICO, and CSS assets can be included in the generated pages by passing them as
a list with the `assets` keyword. Each asset will be included in the `<head>` of every page
in the order in which they are given. The type of the asset (i.e. whether it is going to be
included with a `<script>` or a `<link>` tag) is determined by the file's extension --
either `.js`, `.ico`[^1], or `.css` (unless overridden with [`asset`](@ref)).
Simple strings are assumed to be local assets and that each correspond to a file relative to
the documentation source directory (conventionally `src/`). Non-local assets, identified by
their absolute URLs, can be included with the [`asset`](@ref) function.
[^1]: Adding an ICO asset is primarily useful for setting a custom `favicon`.
"""
struct HTML <: Documenter.Writer
prettyurls :: Bool
disable_git :: Bool
edit_link :: Union{String, Symbol, Nothing}
canonical :: Union{String, Nothing}
assets :: Vector{HTMLAsset}
analytics :: String
collapselevel :: Int
sidebar_sitename :: Bool
highlights :: Vector{String}
mathengine :: Union{MathEngine,Nothing}
footer :: Union{Markdown.MD, Nothing}
lang :: String
warn_outdated :: Bool
function HTML(;
prettyurls :: Bool = true,
disable_git :: Bool = false,
edit_link :: Union{String, Symbol, Nothing, Default} = Default("master"),
canonical :: Union{String, Nothing} = nothing,
assets :: Vector = String[],
analytics :: String = "",
collapselevel :: Integer = 2,
sidebar_sitename :: Bool = true,
highlights :: Vector{String} = String[],
mathengine :: Union{MathEngine,Nothing} = KaTeX(),
footer :: Union{String, Nothing} = "Powered by [Documenter.jl](https://github.com/JuliaDocs/Documenter.jl) and the [Julia Programming Language](https://julialang.org/).",
# deprecated keywords
edit_branch :: Union{String, Nothing, Default} = Default(nothing),
lang :: String = "en",
warn_outdated :: Bool = true
)
collapselevel >= 1 || throw(ArgumentError("collapselevel must be >= 1"))
assets = map(assets) do asset
isa(asset, HTMLAsset) && return asset
isa(asset, AbstractString) && return HTMLAsset(assetclass(asset), asset, true)
error("Invalid value in assets: $(asset) [$(typeof(asset))]")
end
# Handle edit_branch deprecation
if !isa(edit_branch, Default)
isa(edit_link, Default) || error("Can't specify edit_branch (deprecated) and edit_link simultaneously")
@warn """
The edit_branch keyword is deprecated -- use edit_link instead.
Note: `edit_branch = nothing` must be changed to `edit_link = :commit`.
"""
edit_link = (edit_branch === nothing) ? :commit : edit_branch
end
if isa(edit_link, Symbol) && (edit_link !== :commit)
throw(ArgumentError("Invalid symbol (:$edit_link) passed to edit_link."))
end
if footer !== nothing
footer = Markdown.parse(footer)
if !(length(footer.content) == 1 && footer.content[1] isa Markdown.Paragraph)
throw(ArgumentError("footer must be a single-line markdown compatible string."))
end
end
isa(edit_link, Default) && (edit_link = edit_link[])
new(prettyurls, disable_git, edit_link, canonical, assets, analytics,
collapselevel, sidebar_sitename, highlights, mathengine, footer, lang, warn_outdated)
end
end
"Provides a namespace for remote dependencies."
module RD
using JSON
using ....Utilities.JSDependencies: RemoteLibrary, Snippet, RequireJS, jsescape, json_jsescape
using ..HTMLWriter: KaTeX, MathJax, MathJax2, MathJax3
const requirejs_cdn = "https://cdnjs.cloudflare.com/ajax/libs/require.js/2.3.6/require.min.js"
const lato = "https://cdnjs.cloudflare.com/ajax/libs/lato-font/3.0.0/css/lato-font.min.css"
const juliamono = "https://cdnjs.cloudflare.com/ajax/libs/juliamono/0.039/juliamono-regular.css"
const fontawesome_version = "5.15.3"
const fontawesome_css = [
"https://cdnjs.cloudflare.com/ajax/libs/font-awesome/$(fontawesome_version)/css/fontawesome.min.css",
"https://cdnjs.cloudflare.com/ajax/libs/font-awesome/$(fontawesome_version)/css/solid.min.css",
"https://cdnjs.cloudflare.com/ajax/libs/font-awesome/$(fontawesome_version)/css/brands.min.css",
]
const jquery = RemoteLibrary("jquery", "https://cdnjs.cloudflare.com/ajax/libs/jquery/3.6.0/jquery.min.js")
const jqueryui = RemoteLibrary("jqueryui", "https://cdnjs.cloudflare.com/ajax/libs/jqueryui/1.12.1/jquery-ui.min.js")
const lunr = RemoteLibrary("lunr", "https://cdnjs.cloudflare.com/ajax/libs/lunr.js/2.3.9/lunr.min.js")
const lodash = RemoteLibrary("lodash", "https://cdnjs.cloudflare.com/ajax/libs/lodash.js/4.17.21/lodash.min.js")
# headroom
const headroom_version = "0.12.0"
const headroom = RemoteLibrary("headroom", "https://cdnjs.cloudflare.com/ajax/libs/headroom/$(headroom_version)/headroom.min.js")
const headroom_jquery = RemoteLibrary(
"headroom-jquery",
"https://cdnjs.cloudflare.com/ajax/libs/headroom/$(headroom_version)/jQuery.headroom.min.js",
deps = ["jquery", "headroom"],
)
# highlight.js
"Add the highlight.js dependencies and snippet to a [`RequireJS`](@ref) declaration."
function highlightjs!(r::RequireJS, languages = String[])
# NOTE: the CSS themes for hightlightjs are compiled into the Documenter CSS
# When updating this dependency, it is also necessary to update the the CSS
# files the CSS files in assets/html/scss/highlightjs
hljs_version = "11.0.1"
push!(r, RemoteLibrary(
"highlight",
"https://cdnjs.cloudflare.com/ajax/libs/highlight.js/$(hljs_version)/highlight.min.js"
))
prepend!(languages, ["julia", "julia-repl"])
for language in languages
language = jsescape(language)
push!(r, RemoteLibrary(
"highlight-$(language)",
"https://cdnjs.cloudflare.com/ajax/libs/highlight.js/$(hljs_version)/languages/$(language).min.js",
deps = ["highlight"]
))
end
push!(r, Snippet(
vcat(["jquery", "highlight"], ["highlight-$(jsescape(language))" for language in languages]),
["\$"],
raw"""
$(document).ready(function() {
hljs.highlightAll();
})
"""
))
end
# MathJax & KaTeX
const katex_version = "0.13.11"
const katex_css = "https://cdnjs.cloudflare.com/ajax/libs/KaTeX/$(katex_version)/katex.min.css"
function mathengine!(r::RequireJS, engine::KaTeX)
push!(r, RemoteLibrary(
"katex",
"https://cdnjs.cloudflare.com/ajax/libs/KaTeX/$(katex_version)/katex.min.js"
))
push!(r, RemoteLibrary(
"katex-auto-render",
"https://cdnjs.cloudflare.com/ajax/libs/KaTeX/$(katex_version)/contrib/auto-render.min.js",
deps = ["katex"],
))
push!(r, Snippet(
["jquery", "katex", "katex-auto-render"],
["\$", "katex", "renderMathInElement"],
"""
\$(document).ready(function() {
renderMathInElement(
document.body,
$(json_jsescape(engine.config, 2))
);
})
"""
))
end
function mathengine!(r::RequireJS, engine::MathJax2)
url = isempty(engine.url) ? "https://cdnjs.cloudflare.com/ajax/libs/mathjax/2.7.7/MathJax.js?config=TeX-AMS_HTML" : engine.url
push!(r, RemoteLibrary(
"mathjax",
url,
exports = "MathJax"
))
push!(r, Snippet(["mathjax"], ["MathJax"],
"""
MathJax.Hub.Config($(json_jsescape(engine.config, 2)));
"""
))
end
function mathengine!(r::RequireJS, engine::MathJax3)
url = isempty(engine.url) ? "https://cdnjs.cloudflare.com/ajax/libs/mathjax/3.1.4/es5/tex-svg.js" : engine.url
push!(r, Snippet([], [],
"""
window.MathJax = $(json_jsescape(engine.config, 2));
(function () {
var script = document.createElement('script');
script.src = '$url';
script.async = true;
document.head.appendChild(script);
})();
"""
))
end
mathengine(::RequireJS, ::Nothing) = nothing
end
struct SearchRecord
src :: String
page :: Documents.Page
fragment :: String
category :: String
title :: String
page_title :: String
text :: String
end
"""
[`HTMLWriter`](@ref)-specific globals that are passed to [`domify`](@ref) and
other recursive functions.
"""
mutable struct HTMLContext
doc :: Documents.Document
settings :: HTML
scripts :: Vector{String}
documenter_js :: String
themeswap_js :: String
warner_js :: String
search_js :: String
search_index :: Vector{SearchRecord}
search_index_js :: String
search_navnode :: Documents.NavNode
footnotes :: Vector{Markdown.Footnote}
end
HTMLContext(doc, settings=HTML()) = HTMLContext(doc, settings, [], "", "", "", "", [], "", Documents.NavNode("search", "Search", nothing), [])
function SearchRecord(ctx::HTMLContext, navnode; fragment="", title=nothing, category="page", text="")
page_title = mdflatten(pagetitle(ctx, navnode))
if title === nothing
title = page_title
end
SearchRecord(
pretty_url(ctx, get_url(ctx, navnode.page)),
getpage(ctx, navnode),
fragment,
lowercase(category),
title,
page_title,
text
)
end
function SearchRecord(ctx::HTMLContext, navnode, node::Markdown.Header)
a = getpage(ctx, navnode).mapping[node]
SearchRecord(ctx, navnode;
fragment=Anchors.fragment(a),
title=mdflatten(node),
category="section")
end
function SearchRecord(ctx, navnode, node)
SearchRecord(ctx, navnode; text=mdflatten(node))
end
function JSON.lower(rec::SearchRecord)
# Replace any backslashes in links, if building the docs on Windows
src = replace(rec.src, '\\' => '/')
ref = string(src, rec.fragment)
Dict{String, String}(
"location" => ref,
"page" => rec.page_title,
"title" => rec.title,
"category" => rec.category,
"text" => rec.text
)
end
"""
Returns a page (as a [`Documents.Page`](@ref) object) using the [`HTMLContext`](@ref).
"""
getpage(ctx, path) = ctx.doc.blueprint.pages[path]
getpage(ctx, navnode::Documents.NavNode) = getpage(ctx, navnode.page)
function render(doc::Documents.Document, settings::HTML=HTML())
@info "HTMLWriter: rendering HTML pages."
!isempty(doc.user.sitename) || error("HTML output requires `sitename`.")
if isempty(doc.blueprint.pages)
error("Aborting HTML build: no pages under src/")
elseif !haskey(doc.blueprint.pages, "index.md")
@warn "Can't generate landing page (index.html): src/index.md missing" keys(doc.blueprint.pages)
end
ctx = HTMLContext(doc, settings)
ctx.search_index_js = "search_index.js"
ctx.themeswap_js = copy_asset("themeswap.js", doc)
ctx.warner_js = copy_asset("warner.js", doc)
# Generate documenter.js file with all the JS dependencies
ctx.documenter_js = "assets/documenter.js"
if isfile(joinpath(doc.user.source, "assets", "documenter.js"))
@warn "not creating 'documenter.js', provided by the user."
else
r = JSDependencies.RequireJS([
RD.jquery, RD.jqueryui, RD.headroom, RD.headroom_jquery,
])
RD.mathengine!(r, settings.mathengine)
RD.highlightjs!(r, settings.highlights)
for filename in readdir(joinpath(ASSETS, "js"))
path = joinpath(ASSETS, "js", filename)
endswith(filename, ".js") && isfile(path) || continue
push!(r, JSDependencies.parse_snippet(path))
end
JSDependencies.verify(r; verbose=true) || error("RequireJS declaration is invalid")
JSDependencies.writejs(joinpath(doc.user.build, "assets", "documenter.js"), r)
end
# Generate search.js file with all the JS dependencies
ctx.search_js = "assets/search.js"
if isfile(joinpath(doc.user.source, "assets", "search.js"))
@warn "not creating 'search.js', provided by the user."
else
r = JSDependencies.RequireJS([RD.jquery, RD.lunr, RD.lodash])
push!(r, JSDependencies.parse_snippet(joinpath(ASSETS, "search.js")))
JSDependencies.verify(r; verbose=true) || error("RequireJS declaration is invalid")
JSDependencies.writejs(joinpath(doc.user.build, "assets", "search.js"), r)
end
for theme in THEMES
copy_asset("themes/$(theme).css", doc)
end
for page in keys(doc.blueprint.pages)
idx = findfirst(nn -> nn.page == page, doc.internal.navlist)
nn = (idx === nothing) ? Documents.NavNode(page, nothing, nothing) : doc.internal.navlist[idx]
@debug "Rendering $(page) [$(repr(idx))]"
render_page(ctx, nn)
end
render_search(ctx)
open(joinpath(doc.user.build, ctx.search_index_js), "w") do io
println(io, "var documenterSearchIndex = {\"docs\":")
# convert Vector{SearchRecord} to a JSON string + do additional JS escaping
println(io, json_jsescape(ctx.search_index), "\n}")
end
end
"""
Copies an asset from Documenters `assets/html/` directory to `doc.user.build`.
Returns the path of the copied asset relative to `.build`.
"""
function copy_asset(file, doc)
src = joinpath(Utilities.assetsdir(), "html", file)
alt_src = joinpath(doc.user.source, "assets", file)
dst = joinpath(doc.user.build, "assets", file)
isfile(src) || error("Asset '$file' not found at $(abspath(src))")
# Since user's alternative assets are already copied over in a previous build
# step and they should override Documenter's original assets, we only actually
# perform the copy if <source>/assets/<file> does not exist. Note that checking
# the existence of <build>/assets/<file> is not sufficient since the <build>
# directory might be dirty from a previous build.
if isfile(alt_src)
@warn "not copying '$src', provided by the user."
else
ispath(dirname(dst)) || mkpath(dirname(dst))
ispath(dst) && @warn "overwriting '$dst'."
# Files in the Documenter folder itself are read-only when
# Documenter is Pkg.added so we create a new file to get
# correct file permissions.
open(io -> write(dst, io), src, "r")
end
assetpath = normpath(joinpath("assets", file))
# Replace any backslashes in links, if building the docs on Windows
return replace(assetpath, '\\' => '/')
end
# Page
# ------------------------------------------------------------------------------
## Standard page
"""
Constructs and writes the page referred to by the `navnode` to `.build`.
"""
function render_page(ctx, navnode)
@tags html div body
page = getpage(ctx, navnode)
head = render_head(ctx, navnode)
sidebar = render_sidebar(ctx, navnode)
navbar = render_navbar(ctx, navnode, true)
article = render_article(ctx, navnode)
footer = render_footer(ctx, navnode)
htmldoc = render_html(ctx, navnode, head, sidebar, navbar, article, footer)
open_output(ctx, navnode) do io
print(io, htmldoc)
end
end
## Search page
function render_search(ctx)
@tags article body h1 header hr html li nav p span ul script
src = get_url(ctx, ctx.search_navnode)
head = render_head(ctx, ctx.search_navnode)
sidebar = render_sidebar(ctx, ctx.search_navnode)
navbar = render_navbar(ctx, ctx.search_navnode, false)
article = article(
p["#documenter-search-info"]("Loading search..."),
ul["#documenter-search-results"]
)
footer = render_footer(ctx, ctx.search_navnode)
scripts = [
script[:src => relhref(src, ctx.search_index_js)],
script[:src => relhref(src, ctx.search_js)],
]
htmldoc = render_html(ctx, ctx.search_navnode, head, sidebar, navbar, article, footer, scripts)
open_output(ctx, ctx.search_navnode) do io
print(io, htmldoc)
end
end
## Rendering HTML elements
# ------------------------------------------------------------------------------
"""
Renders the main `<html>` tag.
"""
function render_html(ctx, navnode, head, sidebar, navbar, article, footer, scripts::Vector{DOM.Node}=DOM.Node[])
@tags html body div
DOM.HTMLDocument(
html[:lang=>ctx.settings.lang](
head,
body(
div["#documenter"](
sidebar,
div[".docs-main"](navbar, article, footer),
render_settings(ctx),
),
),
scripts...
)
)
end
"""
Renders the modal settings dialog.
"""
function render_settings(ctx)
@tags div header section footer p button hr span select option label a
theme_selector = p(
label[".label"]("Theme"),
div[".select"](
select["#documenter-themepicker"](option[:value=>theme](theme) for theme in THEMES)
)
)
now_full, now_short = Dates.format(now(), dateformat"E d U Y HH:MM"), Dates.format(now(), dateformat"E d U Y")
buildinfo = p(
"This document was generated with ",
a[:href => "https://github.com/JuliaDocs/Documenter.jl"]("Documenter.jl"),
" version $(Documenter.DOCUMENTER_VERSION)",
" on ",
span[".colophon-date", :title => now_full](now_short),
". ",
"Using Julia version $(Base.VERSION)."
)
div["#documenter-settings.modal"](
div[".modal-background"],
div[".modal-card"](
header[".modal-card-head"](
p[".modal-card-title"]("Settings"),
button[".delete"]()
),
section[".modal-card-body"](
theme_selector, hr(), buildinfo
),
footer[".modal-card-foot"]()
)
)
end
function render_head(ctx, navnode)
@tags head meta link script title
src = get_url(ctx, navnode)
page_title = "$(mdflatten(pagetitle(ctx, navnode))) · $(ctx.doc.user.sitename)"
css_links = [
RD.lato,
RD.juliamono,
RD.fontawesome_css...,
RD.katex_css,
]
head(
meta[:charset=>"UTF-8"],
meta[:name => "viewport", :content => "width=device-width, initial-scale=1.0"],
title(page_title),
analytics_script(ctx.settings.analytics),
warning_script(src, ctx),
canonical_link_element(ctx.settings.canonical, pretty_url(ctx, src)),
# Stylesheets.
map(css_links) do each
link[:href => each, :rel => "stylesheet", :type => "text/css"]
end,
script("documenterBaseURL=\"$(relhref(src, "."))\""),
script[
:src => RD.requirejs_cdn,
Symbol("data-main") => relhref(src, ctx.documenter_js)
],
script[:src => relhref(src, "siteinfo.js")],
script[:src => relhref(src, "../versions.js")],
# Themes. Note: we reverse the list to make sure that the default theme (first in
# the array) comes as the last <link> tag.
map(Iterators.reverse(enumerate(THEMES))) do (i, theme)
e = link[".docs-theme-link",
:rel => "stylesheet", :type => "text/css",
:href => relhref(src, "assets/themes/$(theme).css"),
Symbol("data-theme-name") => theme,
]
(i == 1) && push!(e.attributes, Symbol("data-theme-primary") => "")
(i == 2) && push!(e.attributes, Symbol("data-theme-primary-dark") => "")
return e
end,
script[:src => relhref(src, ctx.themeswap_js)],
# Custom user-provided assets.
asset_links(src, ctx.settings.assets),
)
end
function asset_links(src::AbstractString, assets::Vector{HTMLAsset})
@tags link script
links = DOM.Node[]
for asset in assets
class = asset.class
url = asset.islocal ? relhref(src, asset.uri) : asset.uri
node =
class == :ico ? link[:href => url, :rel => "icon", :type => "image/x-icon"] :
class == :css ? link[:href => url, :rel => "stylesheet", :type => "text/css"] :
class == :js ? script[:src => url] : continue # Skip non-js/css files.
push!(links, node)
end
return links
end
function analytics_script(tracking_id::AbstractString)
@tags script
isempty(tracking_id) ? Tag(Symbol("#RAW#"))("") : [
script[:async, :src => "https://www.googletagmanager.com/gtag/js?id=$(tracking_id)"](),
script("""
window.dataLayer = window.dataLayer || [];
function gtag(){dataLayer.push(arguments);}
gtag('js', new Date());
gtag('config', '$(tracking_id)', {'page_path': location.pathname + location.search + location.hash});
""")
]
end
function warning_script(src, ctx)
if ctx.settings.warn_outdated
return Tag(:script)[Symbol(OUTDATED_VERSION_ATTR), :src => relhref(src, ctx.warner_js)]()
end
return Tag(Symbol("#RAW#"))("")
end
function canonical_link_element(canonical_link, src)
@tags link
if canonical_link === nothing
return Tag(Symbol("#RAW#"))("")
else
canonical_link_stripped = rstrip(canonical_link, '/')
href = "$canonical_link_stripped/$src"
return link[:rel => "canonical", :href => href]
end
end
# Navigation menu
# ------------------------------------------------------------------------------
struct NavMenuContext
htmlctx :: HTMLContext
current :: Documents.NavNode
idstack :: Vector{Int}
end
NavMenuContext(ctx::HTMLContext, current::Documents.NavNode) = NavMenuContext(ctx, current, [])
function render_sidebar(ctx, navnode)
@tags a form img input nav div select option span
src = get_url(ctx, navnode)
navmenu = nav[".docs-sidebar"]
# The logo and sitename will point to the first page in the navigation menu
href = navhref(ctx, first(ctx.doc.internal.navlist), navnode)
# Logo
logo = find_image_asset(ctx, "logo")
logo_dark = find_image_asset(ctx, "logo-dark")
if logo !== nothing
alt = isempty(ctx.doc.user.sitename) ? "Logo" : "$(ctx.doc.user.sitename) logo"
logo_element = a[".docs-logo", :href => href]
if logo_dark === nothing
push!(logo_element.nodes, img[:src => relhref(src, logo), :alt => alt])
else
push!(logo_element.nodes, img[".docs-light-only", :src => relhref(src, logo), :alt => alt])
push!(logo_element.nodes, img[".docs-dark-only", :src => relhref(src, logo_dark), :alt => alt])
end
push!(navmenu.nodes, logo_element)
end
# Sitename
if ctx.settings.sidebar_sitename
push!(navmenu.nodes, div[".docs-package-name"](
span[".docs-autofit"](a[:href => href](ctx.doc.user.sitename))
))
end
# Search box
push!(navmenu.nodes,
form[".docs-search", :action => navhref(ctx, ctx.search_navnode, navnode)](
input[
"#documenter-search-query.docs-search-query",
:name => "q",
:type => "text",
:placeholder => "Search docs",
],
)
)
# The menu itself
menu = navitem(NavMenuContext(ctx, navnode))
push!(menu.attributes, :class => "docs-menu")
push!(navmenu.nodes, menu)
# Version selector
let
vs_class = ".docs-version-selector.field.has-addons"
vs_label = span[".docs-label.button.is-static.is-size-7"]("Version")
vs_label = div[".control"](vs_label)
vs_select = select["#documenter-version-selector"]
if !isempty(ctx.doc.user.version)
vs_class = "$(vs_class).visible"
opt = option[:value => "#", :selected => "selected", ](ctx.doc.user.version)