Implement output path flag

Fixes steveklabnik#131

src/lib.rs

@@ -62,6 +62,9 @@ pub struct Config {
     /// Path to the `Cargo.toml` file for the crate being analyzed
     manifest_path: PathBuf,
 
+    /// Path to place rustdoc output
+    output_path: Option<PathBuf>,
+
     /// Contains the Cargo analysis output for the crate being documented
     host: analysis::AnalysisHost,
 }
@@ -85,6 +88,7 @@ impl Config {
         Ok(Config {
             ui: Ui::new(verbosity),
             manifest_path,
+            output_path: None,
             host,
         })
     }
@@ -97,7 +101,15 @@ impl Config {
 
     /// Returns the directory where output files should be placed
     pub fn output_path(&self) -> PathBuf {
-        self.root_path().join("target").join("doc")
+        match self.output_path {
+            Some(ref path) => path.clone(),
+            None => self.root_path().join("target").join("doc"),
+        }
+    }
+
+    /// Set the directory where output files should be placed
+    pub fn set_output_path(&mut self, output_path: PathBuf) {
+        self.output_path = Some(output_path);
     }
 
     /// Returns the path to the generated documentation.

src/main.rs

@@ -184,16 +184,20 @@ fn run() -> Result<()> {
     } else {
         Verbosity::Normal
     };
-    let config = Config::new(verbosity, manifest_path)?;
+    let mut config = Config::new(verbosity, manifest_path)?;
 
     match matches.subcommand() {
         ("build", Some(matches)) => {
-
             // FIXME: Workaround for clap #1056. Use `.default_value()` once the issue is fixed.
             let artifacts: Vec<&str> = matches
                 .values_of("artifacts")
                 .map(|values| values.collect())
                 .unwrap_or_else(|| DEFAULT_ARTIFACTS.iter().map(|&artifact| artifact).collect());
+
+            if let Some(output_path) = matches.value_of("output") {
+                config.set_output_path(PathBuf::from(output_path));
+            }
+
             build(&config, &artifacts)?;
             if matches.is_present("open") {
                 config.open_docs()?;
@@ -277,7 +281,6 @@ fn check_unimplemented_flags(matches: &ArgMatches) {
     ];
 
     let unimplemented_build_flags = [
-        "output",
         "crate-name",
         "library-path",
         "cfg",