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 dl = std::unstable::dynamic_lib;
15 use std::string::String;
17 pub type PluginJson = Option<(String, json::Json)>;
18 pub type PluginResult = (clean::Crate, PluginJson);
19 pub type PluginCallback = fn (clean::Crate) -> PluginResult;
21 /// Manages loading and running of plugins
22 pub struct PluginManager {
23 dylibs: Vec<dl::DynamicLibrary> ,
24 callbacks: Vec<PluginCallback> ,
25 /// The directory plugins will be loaded from
30 /// Create a new plugin manager
31 pub fn new(prefix: Path) -> PluginManager {
34 callbacks: Vec::new(),
39 /// Load a plugin with the given name.
41 /// Turns `name` into the proper dynamic library filename for the given
42 /// platform. On windows, it turns into name.dll, on OS X, name.dylib, and
43 /// elsewhere, libname.so.
44 pub fn load_plugin(&mut self, name: String) {
45 let x = self.prefix.join(libname(name));
46 let lib_result = dl::DynamicLibrary::open(Some(&x));
47 let lib = lib_result.unwrap();
48 let plugin = unsafe { lib.symbol("rustdoc_plugin_entrypoint") }.unwrap();
49 self.dylibs.push(lib);
50 self.callbacks.push(plugin);
53 /// Load a normal Rust function as a plugin.
55 /// This is to run passes over the cleaned crate. Plugins run this way
56 /// correspond to the A-aux tag on Github.
57 pub fn add_plugin(&mut self, plugin: PluginCallback) {
58 self.callbacks.push(plugin);
60 /// Run all the loaded plugins over the crate, returning their results
61 pub fn run_plugins(&self, krate: clean::Crate) -> (clean::Crate, Vec<PluginJson> ) {
62 let mut out_json = Vec::new();
63 let mut krate = krate;
64 for &callback in self.callbacks.iter() {
65 let (c, res) = callback(krate);
73 #[cfg(target_os="win32")]
74 fn libname(mut n: String) -> String {
79 #[cfg(target_os="macos")]
80 fn libname(mut n: String) -> String {
85 #[cfg(not(target_os="win32"), not(target_os="macos"))]
86 fn libname(n: String) -> String {
87 let mut i = String::from_str("lib");
88 i.push_str(n.as_slice());