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/* moduleloader.vala
*
* Copyright (C) 2008-2009 Florian Brosch
* Copyright (C) 2011 Florian Brosch
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 2.1 of the License, or (at your option) any later version.
*
* This library is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with this library; if not, write to the Free Software
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
*
* Author:
* Brosch Florian <flo.brosch@gmail.com>
*/
[CCode (has_target = false)]
public delegate void Valadoc.TagletRegisterFunction (ModuleLoader loader);
public class Valadoc.ModuleLoader : Object {
private Vala.HashMap<string, ModuleData> doclets = new Vala.HashMap<string, ModuleData> (str_hash, str_equal);
private Vala.HashMap<string, GLib.Type> taglets = new Vala.HashMap<string, GLib.Type> (str_hash, str_equal);
private static ModuleLoader instance;
public static ModuleLoader get_instance () {
if (instance == null) {
instance = new ModuleLoader ();
Taglets.init (instance);
}
return instance;
}
private ModuleLoader () {
}
private class ModuleData : Object {
public Module module;
public Type type;
}
//
// path helpers:
//
public static bool is_doclet (string path) {
string library_path = Path.build_filename (path, "libdoclet." + Module.SUFFIX);
return FileUtils.test (path, FileTest.EXISTS) && FileUtils.test (library_path, FileTest.EXISTS);
}
private static string get_plugin_path (string pluginpath, string pluginsubdir) {
if (Path.is_absolute (pluginpath) == false) {
// Test to see if the plugin exists in the expanded path and then fallback
// to using the configured plugin directory
string local_path = Path.build_filename (Environment.get_current_dir(), pluginpath);
if (is_doclet(local_path)) {
return local_path;
} else {
return Path.build_filename (Config.PACKAGE_VALADOC_LIBDIR, pluginsubdir, pluginpath);
}
}
return pluginpath;
}
public static string get_doclet_path (string? docletpath, ErrorReporter reporter) {
if (docletpath == null) {
return Path.build_filename (Config.PACKAGE_VALADOC_LIBDIR, "doclets", "html");
}
return get_plugin_path (docletpath, "doclets");
}
//
// Creation methods:
//
public Content.Taglet? create_taglet (string keyword) {
return (taglets.contains (keyword))? (Content.Taglet) GLib.Object.new (taglets.get (keyword)) : null;
}
public void register_taglet (string keyword, Type type) {
taglets.set (keyword, type);
}
public Doclet? create_doclet (string _path) {
string path = Vala.CodeContext.realpath (_path);
ModuleData? data = doclets.get (path);
if (data == null) {
void* function;
Module? module = Module.open (Module.build_path (path, "libdoclet"), ModuleFlags.LAZY | ModuleFlags.LOCAL);
if (module == null) {
return null;
}
module.symbol("register_plugin", out function);
if (function == null) {
return null;
}
Valadoc.DocletRegisterFunction register_func = (Valadoc.DocletRegisterFunction) function;
data = new ModuleData ();
doclets.set (path, data);
data.type = register_func (this);
data.module = (owned) module;
}
return (Doclet) GLib.Object.new (data.type);
}
}
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