rustbuild: Add rustbook/standalone doc support

This commit implements documentation generation of the nomicon, the book, the
style guide, and the standalone docs. New steps were added for each one as well
as appropriate makefile targets for each one as well.

4 files changed, 154 insertions, 0 deletions

diff --git a/src/bootstrap/build/doc.rs b/src/bootstrap/build/doc.rs
new file mode 100644
index 00000000000..937a234bec8
--- /dev/null
+++ b/src/bootstrap/build/doc.rs
@@ -0,0 +1,104 @@
+// Copyright 2016 The Rust Project Developers. See the COPYRIGHT
+// file at the top-level directory of this distribution and at
+// http://rust-lang.org/COPYRIGHT.
+//
+// Licensed under the Apache License, Version 2.0 <LICENSE-APACHE or
+// http://www.apache.org/licenses/LICENSE-2.0> or the MIT license
+// <LICENSE-MIT or http://opensource.org/licenses/MIT>, at your
+// option. This file may not be copied, modified, or distributed
+// except according to those terms.
+
+use std::path::Path;
+use std::fs::{self, File};
+use std::io::prelude::*;
+
+use build::{Build, Compiler};
+use build::util::up_to_date;
+
+pub fn rustbook(build: &Build, stage: u32, host: &str, name: &str, out: &Path) {
+    t!(fs::create_dir_all(out));
+
+    let out = out.join(name);
+    let compiler = Compiler::new(stage, host);
+    let src = build.src.join("src/doc").join(name);
+    let index = out.join("index.html");
+    let rustbook = build.tool(&compiler, "rustbook");
+    if up_to_date(&src, &index) && up_to_date(&rustbook, &index) {
+        return
+    }
+    println!("Rustbook stage{} ({}) - {}", stage, host, name);
+    let _ = fs::remove_dir_all(&out);
+    build.run(build.tool_cmd(&compiler, "rustbook")
+                   .arg("build")
+                   .arg(&src)
+                   .arg(out));
+}
+
+pub fn standalone(build: &Build, stage: u32, host: &str, out: &Path) {
+    println!("Documenting stage{} standalone ({})", stage, host);
+    t!(fs::create_dir_all(out));
+
+    let compiler = Compiler::new(stage, host);
+
+    let favicon = build.src.join("src/doc/favicon.inc");
+    let footer = build.src.join("src/doc/footer.inc");
+    let full_toc = build.src.join("src/doc/full-toc.inc");
+    t!(fs::copy(build.src.join("src/doc/rust.css"), out.join("rust.css")));
+
+    let version_input = build.src.join("src/doc/version_info.html.template");
+    let version_info = out.join("version_info.html");
+
+    if !up_to_date(&version_input, &version_info) {
+        let mut info = String::new();
+        t!(t!(File::open(&version_input)).read_to_string(&mut info));
+        let blank = String::new();
+        let short = build.short_ver_hash.as_ref().unwrap_or(&blank);
+        let hash = build.ver_hash.as_ref().unwrap_or(&blank);
+        let info = info.replace("VERSION", &build.release)
+                       .replace("SHORT_HASH", short)
+                       .replace("STAMP", hash);
+        t!(t!(File::create(&version_info)).write_all(info.as_bytes()));
+    }
+
+    for file in t!(fs::read_dir(build.src.join("src/doc"))) {
+        let file = t!(file);
+        let path = file.path();
+        let filename = path.file_name().unwrap().to_str().unwrap();
+        if !filename.ends_with(".md") || filename == "README.md" {
+            continue
+        }
+
+        let html = out.join(filename).with_extension("html");
+        let rustdoc = build.tool(&compiler, "rustdoc");
+        if up_to_date(&path, &html) &&
+           up_to_date(&footer, &html) &&
+           up_to_date(&favicon, &html) &&
+           up_to_date(&full_toc, &html) &&
+           up_to_date(&version_info, &html) &&
+           up_to_date(&rustdoc, &html) {
+            continue
+        }
+
+        let mut cmd = build.tool_cmd(&compiler, "rustdoc");
+        cmd.arg("--html-after-content").arg(&footer)
+           .arg("--html-before-content").arg(&version_info)
+           .arg("--html-in-header").arg(&favicon)
+           .arg("--markdown-playground-url")
+           .arg("https://play.rust-lang.org/")
+           .arg("-o").arg(out)
+           .arg(&path);
+
+        if filename == "reference.md" {
+           cmd.arg("--html-in-header").arg(&full_toc);
+        }
+
+        if filename == "not_found.md" {
+            cmd.arg("--markdown-no-toc")
+               .arg("--markdown-css")
+               .arg("https://doc.rust-lang.org/rust.css");
+        } else {
+            cmd.arg("--markdown-css").arg("rust.css");
+        }
+        build.run(&mut cmd);
+    }
+}
diff --git a/src/bootstrap/build/mod.rs b/src/bootstrap/build/mod.rs
index 92043ee3f25..2bb169a5ebc 100644
--- a/src/bootstrap/build/mod.rs
+++ b/src/bootstrap/build/mod.rs
@@ -33,6 +33,7 @@ mod channel;
 mod clean;
 mod compile;
 mod config;
+mod doc;
 mod flags;
 mod native;
 mod sanity;
@@ -133,6 +134,7 @@ impl Build {
         self.update_submodules();
 
         for target in step::all(self) {
+            let doc_out = self.out.join(&target.target).join("doc");
             match target.src {
                 Llvm { _dummy } => {
                     native::llvm(self, target.target);
@@ -149,6 +151,21 @@ impl Build {
                 Rustc { stage } => {
                     println!("ok, rustc stage{} in {}", stage, target.target);
                 }
+                DocBook { stage } => {
+                    doc::rustbook(self, stage, target.target, "book", &doc_out);
+                }
+                DocNomicon { stage } => {
+                    doc::rustbook(self, stage, target.target, "nomicon",
+                                  &doc_out);
+                }
+                DocStyle { stage } => {
+                    doc::rustbook(self, stage, target.target, "style",
+                                  &doc_out);
+                }
+                DocStandalone { stage } => {
+                    doc::standalone(self, stage, target.target, &doc_out);
+                }
+                Doc { .. } => {} // pseudo-step
             }
         }
     }
diff --git a/src/bootstrap/build/step.rs b/src/bootstrap/build/step.rs
index 2fbf1a6ad1d..d82c62b3667 100644
--- a/src/bootstrap/build/step.rs
+++ b/src/bootstrap/build/step.rs
@@ -26,6 +26,11 @@ macro_rules! targets {
             (librustc, Librustc { stage: u32, compiler: Compiler<'a> }),
             (llvm, Llvm { _dummy: () }),
             (compiler_rt, CompilerRt { _dummy: () }),
+            (doc, Doc { stage: u32 }),
+            (doc_book, DocBook { stage: u32 }),
+            (doc_nomicon, DocNomicon { stage: u32 }),
+            (doc_style, DocStyle { stage: u32 }),
+            (doc_standalone, DocStandalone { stage: u32 }),
         }
     }
 }
@@ -88,6 +93,7 @@ fn top_level(build: &Build) -> Vec<Step> {
             src: Source::Llvm { _dummy: () },
             target: &build.config.build,
         };
+        targets.push(t.doc(stage));
         for host in build.config.host.iter() {
             if !build.flags.host.contains(host) {
                 continue
@@ -121,6 +127,11 @@ fn add_steps<'a>(build: &'a Build,
             "rustc" => targets.push(host.rustc(stage)),
             "llvm" => targets.push(target.llvm(())),
             "compiler-rt" => targets.push(target.compiler_rt(())),
+            "doc-style" => targets.push(host.doc_style(stage)),
+            "doc-standalone" => targets.push(host.doc_standalone(stage)),
+            "doc-nomicon" => targets.push(host.doc_nomicon(stage)),
+            "doc-book" => targets.push(host.doc_book(stage)),
+            "doc" => targets.push(host.doc(stage)),
             _ => panic!("unknown build target: `{}`", step),
         }
     }
@@ -172,6 +183,16 @@ impl<'a> Step<'a> {
                 vec![self.llvm(()).target(&build.config.build)]
             }
             Source::Llvm { _dummy } => Vec::new(),
+            Source::DocBook { stage } |
+            Source::DocNomicon { stage } |
+            Source::DocStyle { stage } |
+            Source::DocStandalone { stage } => {
+                vec![self.rustc(stage)]
+            }
+            Source::Doc { stage } => {
+                vec![self.doc_book(stage), self.doc_nomicon(stage),
+                     self.doc_style(stage), self.doc_standalone(stage)]
+            }
         }
     }
 }
diff --git a/src/bootstrap/mk/Makefile.in b/src/bootstrap/mk/Makefile.in
index bd29fd8612d..fa3dee2f358 100644
--- a/src/bootstrap/mk/Makefile.in
+++ b/src/bootstrap/mk/Makefile.in
@@ -24,3 +24,15 @@ all:
 
 clean:
 	$(Q)$(BOOTSTRAP) --clean
+
+docs: doc
+doc:
+	$(Q)$(BOOTSTRAP) --step doc
+style:
+	$(Q)$(BOOTSTRAP) --step doc-style
+nomicon:
+	$(Q)$(BOOTSTRAP) --step doc-nomicon
+book:
+	$(Q)$(BOOTSTRAP) --step doc-book
+standalone-docs:
+	$(Q)$(BOOTSTRAP) --step doc-standalone