src/librustdoc/html/layout.rs

   1 use std::collections::HashMap;
   2 use std::path::PathBuf;
   3
   4 use crate::externalfiles::ExternalHtml;
   5 use crate::html::escape::Escape;
   6 use crate::html::format::{Buffer, Print};
   7 use crate::html::render::{ensure_trailing_slash, StylePath};
   8
   9 #[derive(Clone)]
  10 crate struct Layout {
  11     crate logo: String,
  12     crate favicon: String,
  13     crate external_html: ExternalHtml,
  14     crate default_settings: HashMap<String, String>,
  15     crate krate: String,
  16     /// The given user css file which allow to customize the generated
  17     /// documentation theme.
  18     crate css_file_extension: Option<PathBuf>,
  19     /// If false, the `select` element to have search filtering by crates on rendered docs
  20     /// won't be generated.
  21     crate generate_search_filter: bool,
  22 }
  23
  24 crate struct Page<'a> {
  25     crate title: &'a str,
  26     crate css_class: &'a str,
  27     crate root_path: &'a str,
  28     crate static_root_path: Option<&'a str>,
  29     crate description: &'a str,
  30     crate keywords: &'a str,
  31     crate resource_suffix: &'a str,
  32     crate extra_scripts: &'a [&'a str],
  33     crate static_extra_scripts: &'a [&'a str],
  34 }
  35
  36 crate fn render<T: Print, S: Print>(
  37     layout: &Layout,
  38     page: &Page<'_>,
  39     sidebar: S,
  40     t: T,
  41     style_files: &[StylePath],
  42 ) -> String {
  43     let static_root_path = page.static_root_path.unwrap_or(page.root_path);
  44     format!(
  45         "<!DOCTYPE html>\
  46 <html lang=\"en\">\
  47 <head>\
  48     <meta charset=\"utf-8\">\
  49     <meta name=\"viewport\" content=\"width=device-width, initial-scale=1.0\">\
  50     <meta name=\"generator\" content=\"rustdoc\">\
  51     <meta name=\"description\" content=\"{description}\">\
  52     <meta name=\"keywords\" content=\"{keywords}\">\
  53     <title>{title}</title>\
  54     <link rel=\"stylesheet\" type=\"text/css\" href=\"{static_root_path}normalize{suffix}.css\">\
  55     <link rel=\"stylesheet\" type=\"text/css\" href=\"{static_root_path}rustdoc{suffix}.css\" \
  56           id=\"mainThemeStyle\">\
  57     {style_files}\
  58     <script id=\"default-settings\"{default_settings}></script>\
  59     <script src=\"{static_root_path}storage{suffix}.js\"></script>\
  60     <noscript><link rel=\"stylesheet\" href=\"{static_root_path}noscript{suffix}.css\"></noscript>\
  61     {css_extension}\
  62     {favicon}\
  63     {in_header}\
  64     <style type=\"text/css\">\
  65     #crate-search{{background-image:url(\"{static_root_path}down-arrow{suffix}.svg\");}}\
  66     </style>\
  67 </head>\
  68 <body class=\"rustdoc {css_class}\">\
  69     <!--[if lte IE 8]>\
  70     <div class=\"warning\">\
  71         This old browser is unsupported and will most likely display funky \
  72         things.\
  73     </div>\
  74     <![endif]-->\
  75     {before_content}\
  76     <nav class=\"sidebar\">\
  77         <div class=\"sidebar-menu\">&#9776;</div>\
  78         {logo}\
  79         {sidebar}\
  80     </nav>\
  81     <div class=\"theme-picker\">\
  82         <button id=\"theme-picker\" aria-label=\"Pick another theme!\" aria-haspopup=\"menu\">\
  83             <img src=\"{static_root_path}brush{suffix}.svg\" \
  84                  width=\"18\" \
  85                  alt=\"Pick another theme!\">\
  86         </button>\
  87         <div id=\"theme-choices\" role=\"menu\"></div>\
  88     </div>\
  89     <script src=\"{static_root_path}theme{suffix}.js\"></script>\
  90     <nav class=\"sub\">\
  91         <form class=\"search-form\">\
  92             <div class=\"search-container\">\
  93                 <div>{filter_crates}\
  94                     <input class=\"search-input\" name=\"search\" \
  95                            disabled \
  96                            autocomplete=\"off\" \
  97                            spellcheck=\"false\" \
  98                            placeholder=\"Click or press ‘S’ to search, ‘?’ for more options…\" \
  99                            type=\"search\">\
 100                 </div>\
 101                 <button type=\"button\" class=\"help-button\">?</button>
 102                 <a id=\"settings-menu\" href=\"{root_path}settings.html\">\
 103                     <img src=\"{static_root_path}wheel{suffix}.svg\" \
 104                          width=\"18\" \
 105                          alt=\"Change settings\">\
 106                 </a>\
 107             </div>\
 108         </form>\
 109     </nav>\
 110     <section id=\"main\" class=\"content\">{content}</section>\
 111     <section id=\"search\" class=\"content hidden\"></section>\
 112     <section class=\"footer\"></section>\
 113     {after_content}\
 114     <div id=\"rustdoc-vars\" data-root-path=\"{root_path}\" data-current-crate=\"{krate}\"></div>
 115     <script src=\"{static_root_path}main{suffix}.js\"></script>\
 116     {static_extra_scripts}\
 117     {extra_scripts}\
 118     <script defer src=\"{root_path}search-index{suffix}.js\"></script>\
 119 </body>\
 120 </html>",
 121         css_extension = if layout.css_file_extension.is_some() {
 122             format!(
 123                 "<link rel=\"stylesheet\" \
 124                        type=\"text/css\" \
 125                        href=\"{static_root_path}theme{suffix}.css\">",
 126                 static_root_path = static_root_path,
 127                 suffix = page.resource_suffix
 128             )
 129         } else {
 130             String::new()
 131         },
 132         content = Buffer::html().to_display(t),
 133         static_root_path = static_root_path,
 134         root_path = page.root_path,
 135         css_class = page.css_class,
 136         logo = {
 137             let p = format!("{}{}", page.root_path, layout.krate);
 138             let p = ensure_trailing_slash(&p);
 139             if layout.logo.is_empty() {
 140                 format!(
 141                     "<a href='{path}index.html'>\
 142                      <div class='logo-container rust-logo'>\
 143                      <img src='{static_root_path}rust-logo{suffix}.png' alt='logo'></div></a>",
 144                     path = p,
 145                     static_root_path = static_root_path,
 146                     suffix = page.resource_suffix
 147                 )
 148             } else {
 149                 format!(
 150                     "<a href='{}index.html'>\
 151                      <div class='logo-container'><img src='{}' alt='logo'></div></a>",
 152                     p, layout.logo
 153                 )
 154             }
 155         },
 156         title = page.title,
 157         description = page.description,
 158         keywords = page.keywords,
 159         favicon = if layout.favicon.is_empty() {
 160             format!(
 161                 r##"<link rel="icon" type="image/svg+xml" href="{static_root_path}favicon{suffix}.svg">
 162 <link rel="alternate icon" type="image/png" href="{static_root_path}favicon-16x16{suffix}.png">
 163 <link rel="alternate icon" type="image/png" href="{static_root_path}favicon-32x32{suffix}.png">"##,
 164                 static_root_path = static_root_path,
 165                 suffix = page.resource_suffix
 166             )
 167         } else {
 168             format!(r#"<link rel="shortcut icon" href="{}">"#, layout.favicon)
 169         },
 170         in_header = layout.external_html.in_header,
 171         before_content = layout.external_html.before_content,
 172         after_content = layout.external_html.after_content,
 173         sidebar = Buffer::html().to_display(sidebar),
 174         krate = layout.krate,
 175         default_settings = layout
 176             .default_settings
 177             .iter()
 178             .map(|(k, v)| format!(r#" data-{}="{}""#, k.replace('-', "_"), Escape(v)))
 179             .collect::<String>(),
 180         style_files = style_files
 181             .iter()
 182             .filter_map(|t| {
 183                 if let Some(stem) = t.path.file_stem() { Some((stem, t.disabled)) } else { None }
 184             })
 185             .filter_map(|t| {
 186                 if let Some(path) = t.0.to_str() { Some((path, t.1)) } else { None }
 187             })
 188             .map(|t| format!(
 189                 r#"<link rel="stylesheet" type="text/css" href="{}.css" {} {}>"#,
 190                 Escape(&format!("{}{}{}", static_root_path, t.0, page.resource_suffix)),
 191                 if t.1 { "disabled" } else { "" },
 192                 if t.0 == "light" { "id=\"themeStyle\"" } else { "" }
 193             ))
 194             .collect::<String>(),
 195         suffix = page.resource_suffix,
 196         static_extra_scripts = page
 197             .static_extra_scripts
 198             .iter()
 199             .map(|e| {
 200                 format!(
 201                     "<script src=\"{static_root_path}{extra_script}.js\"></script>",
 202                     static_root_path = static_root_path,
 203                     extra_script = e
 204                 )
 205             })
 206             .collect::<String>(),
 207         extra_scripts = page
 208             .extra_scripts
 209             .iter()
 210             .map(|e| {
 211                 format!(
 212                     "<script src=\"{root_path}{extra_script}.js\"></script>",
 213                     root_path = page.root_path,
 214                     extra_script = e
 215                 )
 216             })
 217             .collect::<String>(),
 218         filter_crates = if layout.generate_search_filter {
 219             "<select id=\"crate-search\">\
 220                  <option value=\"All crates\">All crates</option>\
 221              </select>"
 222         } else {
 223             ""
 224         },
 225     )
 226 }
 227
 228 crate fn redirect(url: &str) -> String {
 229     // <script> triggers a redirect before refresh, so this is fine.
 230     format!(
 231         r##"<!DOCTYPE html>
 232 <html lang="en">
 233 <head>
 234     <meta http-equiv="refresh" content="0;URL={url}">
 235 </head>
 236 <body>
 237     <p>Redirecting to <a href="{url}">{url}</a>...</p>
 238     <script>location.replace("{url}" + location.search + location.hash);</script>
 239 </body>
 240 </html>"##,
 241         url = url,
 242     )
 243 }