1 // Copyright 2012-2013 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.
13 use std::dynamic_lib as dl;
16 use std::string::String;
18 pub type PluginJson = Option<(String, json::Json)>;
19 pub type PluginResult = (clean::Crate, PluginJson);
20 pub type PluginCallback = fn (clean::Crate) -> PluginResult;
22 /// Manages loading and running of plugins
23 pub struct PluginManager {
24 dylibs: Vec<dl::DynamicLibrary> ,
25 callbacks: Vec<PluginCallback> ,
26 /// The directory plugins will be loaded from
31 /// Create a new plugin manager
32 pub fn new(prefix: Path) -> PluginManager {
35 callbacks: Vec::new(),
40 /// Load a plugin with the given name.
42 /// Turns `name` into the proper dynamic library filename for the given
43 /// platform. On windows, it turns into name.dll, on OS X, name.dylib, and
44 /// elsewhere, libname.so.
45 pub fn load_plugin(&mut self, name: String) {
46 let x = self.prefix.join(libname(name));
47 let lib_result = dl::DynamicLibrary::open(Some(&x));
48 let lib = lib_result.unwrap();
50 let plugin = lib.symbol("rustdoc_plugin_entrypoint").unwrap();
51 self.callbacks.push(mem::transmute::<*mut u8,PluginCallback>(plugin));
53 self.dylibs.push(lib);
56 /// Load a normal Rust function as a plugin.
58 /// This is to run passes over the cleaned crate. Plugins run this way
59 /// correspond to the A-aux tag on Github.
60 pub fn add_plugin(&mut self, plugin: PluginCallback) {
61 self.callbacks.push(plugin);
63 /// Run all the loaded plugins over the crate, returning their results
64 pub fn run_plugins(&self, krate: clean::Crate) -> (clean::Crate, Vec<PluginJson> ) {
65 let mut out_json = Vec::new();
66 let mut krate = krate;
67 for &callback in self.callbacks.iter() {
68 let (c, res) = callback(krate);
76 #[cfg(target_os = "windows")]
77 fn libname(mut n: String) -> String {
82 #[cfg(target_os="macos")]
83 fn libname(mut n: String) -> String {
88 #[cfg(not(target_os="windows"), not(target_os="macos"))]
89 fn libname(n: String) -> String {
90 let mut i = String::from_str("lib");
91 i.push_str(n.as_slice());