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 /// Generates all standalone documentation as compiled by the rustdoc in `stage`
57 /// for the `target` into `out`.
59 /// This will list all of `src/doc` looking for markdown files and appropriately
60 /// perform transformations like substituting `VERSION`, `SHORT_HASH`, and
61 /// `STAMP` alongw ith providing the various header/footer HTML we've cutomized.
63 /// In the end, this is just a glorified wrapper around rustdoc!
64 pub fn standalone(build: &Build, target: &str) {
65 println!("Documenting standalone ({})", target);
66 let out = build.doc_out(target);
67 t!(fs::create_dir_all(&out));
69 let compiler = Compiler::new(0, &build.config.build);
71 let favicon = build.src.join("src/doc/favicon.inc");
72 let footer = build.src.join("src/doc/footer.inc");
73 let full_toc = build.src.join("src/doc/full-toc.inc");
74 t!(fs::copy(build.src.join("src/doc/rust.css"), out.join("rust.css")));
76 let version_input = build.src.join("src/doc/version_info.html.template");
77 let version_info = out.join("version_info.html");
79 if !up_to_date(&version_input, &version_info) {
80 let mut info = String::new();
81 t!(t!(File::open(&version_input)).read_to_string(&mut info));
82 let info = info.replace("VERSION", &build.rust_release())
83 .replace("SHORT_HASH", build.rust_info.sha_short().unwrap_or(""))
84 .replace("STAMP", build.rust_info.sha().unwrap_or(""));
85 t!(t!(File::create(&version_info)).write_all(info.as_bytes()));
88 for file in t!(fs::read_dir(build.src.join("src/doc"))) {
90 let path = file.path();
91 let filename = path.file_name().unwrap().to_str().unwrap();
92 if !filename.ends_with(".md") || filename == "README.md" {
96 let html = out.join(filename).with_extension("html");
97 let rustdoc = build.rustdoc(&compiler);
98 if up_to_date(&path, &html) &&
99 up_to_date(&footer, &html) &&
100 up_to_date(&favicon, &html) &&
101 up_to_date(&full_toc, &html) &&
102 up_to_date(&version_info, &html) &&
103 up_to_date(&rustdoc, &html) {
107 let mut cmd = Command::new(&rustdoc);
108 build.add_rustc_lib_path(&compiler, &mut cmd);
109 cmd.arg("--html-after-content").arg(&footer)
110 .arg("--html-before-content").arg(&version_info)
111 .arg("--html-in-header").arg(&favicon)
112 .arg("--markdown-playground-url")
113 .arg("https://play.rust-lang.org/")
117 if filename == "not_found.md" {
118 cmd.arg("--markdown-no-toc")
119 .arg("--markdown-css")
120 .arg("https://doc.rust-lang.org/rust.css");
122 cmd.arg("--markdown-css").arg("rust.css");
128 /// Compile all standard library documentation.
130 /// This will generate all documentation for the standard library and its
131 /// dependencies. This is largely just a wrapper around `cargo doc`.
132 pub fn std(build: &Build, stage: u32, target: &str) {
133 println!("Documenting stage{} std ({})", stage, target);
134 let out = build.doc_out(target);
135 t!(fs::create_dir_all(&out));
136 let compiler = Compiler::new(stage, &build.config.build);
137 let compiler = if build.force_use_stage1(&compiler, target) {
138 Compiler::new(1, compiler.host)
142 let out_dir = build.stage_out(&compiler, Mode::Libstd)
143 .join(target).join("doc");
144 let rustdoc = build.rustdoc(&compiler);
146 // Here what we're doing is creating a *symlink* (directory junction on
147 // Windows) to the final output location. This is not done as an
148 // optimization but rather for correctness. We've got three trees of
149 // documentation, one for std, one for test, and one for rustc. It's then
150 // our job to merge them all together.
152 // Unfortunately rustbuild doesn't know nearly as well how to merge doc
153 // trees as rustdoc does itself, so instead of actually having three
154 // separate trees we just have rustdoc output to the same location across
157 // This way rustdoc generates output directly into the output, and rustdoc
158 // will also directly handle merging.
159 let my_out = build.crate_doc_out(target);
160 build.clear_if_dirty(&my_out, &rustdoc);
161 t!(symlink_dir_force(&my_out, &out_dir));
163 let mut cargo = build.cargo(&compiler, Mode::Libstd, target, "doc");
164 cargo.arg("--manifest-path")
165 .arg(build.src.join("src/libstd/Cargo.toml"))
166 .arg("--features").arg(build.std_features());
168 // We don't want to build docs for internal std dependencies unless
169 // in compiler-docs mode. When not in that mode, we whitelist the crates
170 // for which docs must be built.
171 if !build.config.compiler_docs {
172 cargo.arg("--no-deps");
173 for krate in &["alloc", "collections", "core", "std", "std_unicode"] {
174 cargo.arg("-p").arg(krate);
175 // Create all crate output directories first to make sure rustdoc uses
177 // FIXME: Cargo should probably do this itself.
178 t!(fs::create_dir_all(out_dir.join(krate)));
183 build.run(&mut cargo);
187 /// Compile all libtest documentation.
189 /// This will generate all documentation for libtest and its dependencies. This
190 /// is largely just a wrapper around `cargo doc`.
191 pub fn test(build: &Build, stage: u32, target: &str) {
192 println!("Documenting stage{} test ({})", stage, target);
193 let out = build.doc_out(target);
194 t!(fs::create_dir_all(&out));
195 let compiler = Compiler::new(stage, &build.config.build);
196 let compiler = if build.force_use_stage1(&compiler, target) {
197 Compiler::new(1, compiler.host)
201 let out_dir = build.stage_out(&compiler, Mode::Libtest)
202 .join(target).join("doc");
203 let rustdoc = build.rustdoc(&compiler);
205 // See docs in std above for why we symlink
206 let my_out = build.crate_doc_out(target);
207 build.clear_if_dirty(&my_out, &rustdoc);
208 t!(symlink_dir_force(&my_out, &out_dir));
210 let mut cargo = build.cargo(&compiler, Mode::Libtest, target, "doc");
211 cargo.arg("--manifest-path")
212 .arg(build.src.join("src/libtest/Cargo.toml"));
213 build.run(&mut cargo);
217 /// Generate all compiler documentation.
219 /// This will generate all documentation for the compiler libraries and their
220 /// dependencies. This is largely just a wrapper around `cargo doc`.
221 pub fn rustc(build: &Build, stage: u32, target: &str) {
222 println!("Documenting stage{} compiler ({})", stage, target);
223 let out = build.doc_out(target);
224 t!(fs::create_dir_all(&out));
225 let compiler = Compiler::new(stage, &build.config.build);
226 let compiler = if build.force_use_stage1(&compiler, target) {
227 Compiler::new(1, compiler.host)
231 let out_dir = build.stage_out(&compiler, Mode::Librustc)
232 .join(target).join("doc");
233 let rustdoc = build.rustdoc(&compiler);
235 // See docs in std above for why we symlink
236 let my_out = build.crate_doc_out(target);
237 build.clear_if_dirty(&my_out, &rustdoc);
238 t!(symlink_dir_force(&my_out, &out_dir));
240 let mut cargo = build.cargo(&compiler, Mode::Librustc, target, "doc");
241 cargo.arg("--manifest-path")
242 .arg(build.src.join("src/rustc/Cargo.toml"))
243 .arg("--features").arg(build.rustc_features());
245 if build.config.compiler_docs {
246 // src/rustc/Cargo.toml contains bin crates called rustc and rustdoc
247 // which would otherwise overwrite the docs for the real rustc and
248 // rustdoc lib crates.
249 cargo.arg("-p").arg("rustc_driver")
250 .arg("-p").arg("rustdoc");
252 // Like with libstd above if compiler docs aren't enabled then we're not
253 // documenting internal dependencies, so we have a whitelist.
254 cargo.arg("--no-deps");
255 for krate in &["proc_macro"] {
256 cargo.arg("-p").arg(krate);
260 build.run(&mut cargo);
264 /// Generates the HTML rendered error-index by running the
265 /// `error_index_generator` tool.
266 pub fn error_index(build: &Build, target: &str) {
267 println!("Documenting error index ({})", target);
268 let out = build.doc_out(target);
269 t!(fs::create_dir_all(&out));
270 let compiler = Compiler::new(0, &build.config.build);
271 let mut index = build.tool_cmd(&compiler, "error_index_generator");
273 index.arg(out.join("error-index.html"));
275 // FIXME: shouldn't have to pass this env var
276 index.env("CFG_BUILD", &build.config.build);
278 build.run(&mut index);
281 fn symlink_dir_force(src: &Path, dst: &Path) -> io::Result<()> {
282 if let Ok(m) = fs::symlink_metadata(dst) {
283 if m.file_type().is_dir() {
284 try!(fs::remove_dir_all(dst));
286 // handle directory junctions on windows by falling back to
288 try!(fs::remove_file(dst).or_else(|_| {
294 symlink_dir(src, dst)