1 // Copyright 2016 The Rust Project Developers. See the COPYRIGHT
2 // file at the top-level directory of this distribution and at
3 // http://rust-lang.org/COPYRIGHT.
5 // Licensed under the Apache License, Version 2.0 <LICENSE-APACHE or
6 // http://www.apache.org/licenses/LICENSE-2.0> or the MIT license
7 // <LICENSE-MIT or http://opensource.org/licenses/MIT>, at your
8 // option. This file may not be copied, modified, or distributed
9 // except according to those terms.
11 //! Documentation generation for rustbuild.
13 //! This module implements generation for all bits and pieces of documentation
14 //! for the Rust project. This notably includes suites like the rust book, the
15 //! nomicon, standalone documentation, etc.
17 //! Everything here is basically just a shim around calling either `rustbook` or
20 use std::fs::{self, File};
21 use std::io::prelude::*;
24 use std::process::Command;
26 use {Build, Compiler, Mode};
27 use util::{cp_r, symlink_dir};
28 use build_helper::up_to_date;
30 /// Invoke `rustbook` as compiled in `stage` for `target` for the doc book
31 /// `name` into the `out` path.
33 /// This will not actually generate any documentation if the documentation has
34 /// already been generated.
35 pub fn rustbook(build: &Build, target: &str, name: &str) {
36 let out = build.doc_out(target);
37 t!(fs::create_dir_all(&out));
39 let out = out.join(name);
40 let compiler = Compiler::new(0, &build.config.build);
41 let src = build.src.join("src/doc").join(name);
42 let index = out.join("index.html");
43 let rustbook = build.tool(&compiler, "rustbook");
44 if up_to_date(&src, &index) && up_to_date(&rustbook, &index) {
47 println!("Rustbook ({}) - {}", target, name);
48 let _ = fs::remove_dir_all(&out);
49 build.run(build.tool_cmd(&compiler, "rustbook")
56 pub fn book(build: &Build, target: &str, name: &str) {
57 rustbook(build, target, &format!("{}/first-edition", name));
58 rustbook(build, target, &format!("{}/second-edition", name));
61 /// Generates all standalone documentation as compiled by the rustdoc in `stage`
62 /// for the `target` into `out`.
64 /// This will list all of `src/doc` looking for markdown files and appropriately
65 /// perform transformations like substituting `VERSION`, `SHORT_HASH`, and
66 /// `STAMP` alongw ith providing the various header/footer HTML we've cutomized.
68 /// In the end, this is just a glorified wrapper around rustdoc!
69 pub fn standalone(build: &Build, target: &str) {
70 println!("Documenting standalone ({})", target);
71 let out = build.doc_out(target);
72 t!(fs::create_dir_all(&out));
74 let compiler = Compiler::new(0, &build.config.build);
76 let favicon = build.src.join("src/doc/favicon.inc");
77 let footer = build.src.join("src/doc/footer.inc");
78 let full_toc = build.src.join("src/doc/full-toc.inc");
79 t!(fs::copy(build.src.join("src/doc/rust.css"), out.join("rust.css")));
81 let version_input = build.src.join("src/doc/version_info.html.template");
82 let version_info = out.join("version_info.html");
84 if !up_to_date(&version_input, &version_info) {
85 let mut info = String::new();
86 t!(t!(File::open(&version_input)).read_to_string(&mut info));
87 let info = info.replace("VERSION", &build.rust_release())
88 .replace("SHORT_HASH", build.rust_info.sha_short().unwrap_or(""))
89 .replace("STAMP", build.rust_info.sha().unwrap_or(""));
90 t!(t!(File::create(&version_info)).write_all(info.as_bytes()));
93 for file in t!(fs::read_dir(build.src.join("src/doc"))) {
95 let path = file.path();
96 let filename = path.file_name().unwrap().to_str().unwrap();
97 if !filename.ends_with(".md") || filename == "README.md" {
101 let html = out.join(filename).with_extension("html");
102 let rustdoc = build.rustdoc(&compiler);
103 if up_to_date(&path, &html) &&
104 up_to_date(&footer, &html) &&
105 up_to_date(&favicon, &html) &&
106 up_to_date(&full_toc, &html) &&
107 up_to_date(&version_info, &html) &&
108 up_to_date(&rustdoc, &html) {
112 let mut cmd = Command::new(&rustdoc);
113 build.add_rustc_lib_path(&compiler, &mut cmd);
114 cmd.arg("--html-after-content").arg(&footer)
115 .arg("--html-before-content").arg(&version_info)
116 .arg("--html-in-header").arg(&favicon)
117 .arg("--markdown-playground-url")
118 .arg("https://play.rust-lang.org/")
122 if filename == "not_found.md" {
123 cmd.arg("--markdown-no-toc")
124 .arg("--markdown-css")
125 .arg("https://doc.rust-lang.org/rust.css");
127 cmd.arg("--markdown-css").arg("rust.css");
133 /// Compile all standard library documentation.
135 /// This will generate all documentation for the standard library and its
136 /// dependencies. This is largely just a wrapper around `cargo doc`.
137 pub fn std(build: &Build, stage: u32, target: &str) {
138 println!("Documenting stage{} std ({})", stage, target);
139 let out = build.doc_out(target);
140 t!(fs::create_dir_all(&out));
141 let compiler = Compiler::new(stage, &build.config.build);
142 let compiler = if build.force_use_stage1(&compiler, target) {
143 Compiler::new(1, compiler.host)
147 let out_dir = build.stage_out(&compiler, Mode::Libstd)
148 .join(target).join("doc");
149 let rustdoc = build.rustdoc(&compiler);
151 // Here what we're doing is creating a *symlink* (directory junction on
152 // Windows) to the final output location. This is not done as an
153 // optimization but rather for correctness. We've got three trees of
154 // documentation, one for std, one for test, and one for rustc. It's then
155 // our job to merge them all together.
157 // Unfortunately rustbuild doesn't know nearly as well how to merge doc
158 // trees as rustdoc does itself, so instead of actually having three
159 // separate trees we just have rustdoc output to the same location across
162 // This way rustdoc generates output directly into the output, and rustdoc
163 // will also directly handle merging.
164 let my_out = build.crate_doc_out(target);
165 build.clear_if_dirty(&my_out, &rustdoc);
166 t!(symlink_dir_force(&my_out, &out_dir));
168 let mut cargo = build.cargo(&compiler, Mode::Libstd, target, "doc");
169 cargo.arg("--manifest-path")
170 .arg(build.src.join("src/libstd/Cargo.toml"))
171 .arg("--features").arg(build.std_features());
173 // We don't want to build docs for internal std dependencies unless
174 // in compiler-docs mode. When not in that mode, we whitelist the crates
175 // for which docs must be built.
176 if !build.config.compiler_docs {
177 cargo.arg("--no-deps");
178 for krate in &["alloc", "collections", "core", "std", "std_unicode"] {
179 cargo.arg("-p").arg(krate);
180 // Create all crate output directories first to make sure rustdoc uses
182 // FIXME: Cargo should probably do this itself.
183 t!(fs::create_dir_all(out_dir.join(krate)));
188 build.run(&mut cargo);
192 /// Compile all libtest documentation.
194 /// This will generate all documentation for libtest and its dependencies. This
195 /// is largely just a wrapper around `cargo doc`.
196 pub fn test(build: &Build, stage: u32, target: &str) {
197 println!("Documenting stage{} test ({})", stage, target);
198 let out = build.doc_out(target);
199 t!(fs::create_dir_all(&out));
200 let compiler = Compiler::new(stage, &build.config.build);
201 let compiler = if build.force_use_stage1(&compiler, target) {
202 Compiler::new(1, compiler.host)
206 let out_dir = build.stage_out(&compiler, Mode::Libtest)
207 .join(target).join("doc");
208 let rustdoc = build.rustdoc(&compiler);
210 // See docs in std above for why we symlink
211 let my_out = build.crate_doc_out(target);
212 build.clear_if_dirty(&my_out, &rustdoc);
213 t!(symlink_dir_force(&my_out, &out_dir));
215 let mut cargo = build.cargo(&compiler, Mode::Libtest, target, "doc");
216 cargo.arg("--manifest-path")
217 .arg(build.src.join("src/libtest/Cargo.toml"));
218 build.run(&mut cargo);
222 /// Generate all compiler documentation.
224 /// This will generate all documentation for the compiler libraries and their
225 /// dependencies. This is largely just a wrapper around `cargo doc`.
226 pub fn rustc(build: &Build, stage: u32, target: &str) {
227 println!("Documenting stage{} compiler ({})", stage, target);
228 let out = build.doc_out(target);
229 t!(fs::create_dir_all(&out));
230 let compiler = Compiler::new(stage, &build.config.build);
231 let compiler = if build.force_use_stage1(&compiler, target) {
232 Compiler::new(1, compiler.host)
236 let out_dir = build.stage_out(&compiler, Mode::Librustc)
237 .join(target).join("doc");
238 let rustdoc = build.rustdoc(&compiler);
240 // See docs in std above for why we symlink
241 let my_out = build.crate_doc_out(target);
242 build.clear_if_dirty(&my_out, &rustdoc);
243 t!(symlink_dir_force(&my_out, &out_dir));
245 let mut cargo = build.cargo(&compiler, Mode::Librustc, target, "doc");
246 cargo.arg("--manifest-path")
247 .arg(build.src.join("src/rustc/Cargo.toml"))
248 .arg("--features").arg(build.rustc_features());
250 if build.config.compiler_docs {
251 // src/rustc/Cargo.toml contains bin crates called rustc and rustdoc
252 // which would otherwise overwrite the docs for the real rustc and
253 // rustdoc lib crates.
254 cargo.arg("-p").arg("rustc_driver")
255 .arg("-p").arg("rustdoc");
257 // Like with libstd above if compiler docs aren't enabled then we're not
258 // documenting internal dependencies, so we have a whitelist.
259 cargo.arg("--no-deps");
260 for krate in &["proc_macro"] {
261 cargo.arg("-p").arg(krate);
265 build.run(&mut cargo);
269 /// Generates the HTML rendered error-index by running the
270 /// `error_index_generator` tool.
271 pub fn error_index(build: &Build, target: &str) {
272 println!("Documenting error index ({})", target);
273 let out = build.doc_out(target);
274 t!(fs::create_dir_all(&out));
275 let compiler = Compiler::new(0, &build.config.build);
276 let mut index = build.tool_cmd(&compiler, "error_index_generator");
278 index.arg(out.join("error-index.html"));
280 // FIXME: shouldn't have to pass this env var
281 index.env("CFG_BUILD", &build.config.build);
283 build.run(&mut index);
286 fn symlink_dir_force(src: &Path, dst: &Path) -> io::Result<()> {
287 if let Ok(m) = fs::symlink_metadata(dst) {
288 if m.file_type().is_dir() {
289 try!(fs::remove_dir_all(dst));
291 // handle directory junctions on windows by falling back to
293 try!(fs::remove_file(dst).or_else(|_| {
299 symlink_dir(src, dst)