Add linkcheck command to rustbook tool

src/tools/rustbook/Cargo.toml

@@ -7,6 +7,8 @@ edition = "2018"
 
 [dependencies]
 clap = "2.25.0"
+mdbook-linkcheck = "0.3.0"
+failure = "0.1"
 
 [dependencies.mdbook]
 version = "0.3.0"

src/tools/rustbook/src/main.rs

@@ -11,7 +11,13 @@ use mdbook_1::{MDBook as MDBook1};
 use mdbook_1::errors::{Result as Result1};
 
 use mdbook::MDBook;
-use mdbook::errors::Result;
+use mdbook::errors::{Result as Result3};
+use mdbook::renderer::RenderContext;
+
+use mdbook_linkcheck;
+use mdbook_linkcheck::errors::BrokenLinks;
+use failure::Error;
+
 
 fn main() {
     let d_message = "-d, --dest-dir=[dest-dir]
@@ -31,6 +37,9 @@ fn main() {
                         .arg_from_usage(d_message)
                         .arg_from_usage(dir_message)
                         .arg_from_usage(vers_message))
+                    .subcommand(SubCommand::with_name("linkcheck")
+                        .about("Run linkcheck with mdBook 3")
+                        .arg_from_usage(dir_message))
                     .get_matches();
 
     // Check which subcomamnd the user ran...
@@ -64,10 +73,32 @@ fn main() {
                 }
             };
         },
+        ("linkcheck", Some(sub_matches)) => {
+            if let Err(err) = linkcheck(sub_matches) {
+                eprintln!("Error: {}", err);
+
+                if let Ok(broken_links) = err.downcast::<BrokenLinks>() {
+                    for cause in broken_links.links().iter() {
+                        eprintln!("\tCaused By: {}", cause);
+                    }
+                }
+
+                ::std::process::exit(101);
+            }
+        },
         (_, _) => unreachable!(),
     };
 }
 
+pub fn linkcheck(args: &ArgMatches<'_>) -> Result<(), Error> {
+    let book_dir = get_book_dir(args);
+    let book = MDBook::load(&book_dir).unwrap();
+    let cfg = book.config;
+    let render_ctx = RenderContext::new(&book_dir, book.book, cfg, &book_dir);
+
+    mdbook_linkcheck::check_links(&render_ctx)
+}
+
 // Build command implementation
 pub fn build_1(args: &ArgMatches<'_>) -> Result1<()> {
     let book_dir = get_book_dir(args);
@@ -86,7 +117,7 @@ pub fn build_1(args: &ArgMatches<'_>) -> Result1<()> {
 }
 
 // Build command implementation
-pub fn build(args: &ArgMatches<'_>) -> Result<()> {
+pub fn build(args: &ArgMatches<'_>) -> Result3<()> {
     let book_dir = get_book_dir(args);
     let mut book = MDBook::load(&book_dir)?;