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// K-3D
// Copyright (c) 1995-2004, Timothy M. Shead
//
// Contact: tshead@k-3d.com
//
// This program is free software; you can redistribute it and/or
// modify it under the terms of the GNU General Public
// License as published by the Free Software Foundation; either
// version 2 of the License, or (at your option) any later version.
//
// This program 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
// General Public License for more details.
//
// You should have received a copy of the GNU General Public
// License along with this program; if not, write to the Free Software
// Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
/** \file
\brief Implements Ruby engine, an implementation of k3d::iscript_engine that supports the Ruby language
\author Anders Dahnielson (anders@dahnielson.com)
*/
#include "object_model.h"
#include <k3dsdk/command_node.h>
#include <k3dsdk/ideletable.h>
#include <k3dsdk/iscript_engine.h>
#include <k3dsdk/classes.h>
#include <k3dsdk/module.h>
#include <iostream>
/// Namespace reserved for the Ruby script engine plugin module, to protect public symbols from name clashes with other modules
namespace libk3druby
{
const std::string magic_token("#ruby");
static VALUE defout_write(VALUE self, VALUE str)
{
std::cerr << Ruby_To_String(str);
return RBVAL_NONE;
}
class engine :
public k3d::iscript_engine,
public k3d::ideletable
{
public:
engine()
{
// Fire up the interpreter here
ruby_init();
ruby_init_loadpath();
rb_set_safe_level(0);
ruby_script("ruby");
// Connect Ruby to outputstream
rb_defout = rb_str_new("", 0);
rb_define_singleton_method(rb_defout, "write", (VALUE(*)(...))defout_write, 1);
// Initialize Application module
CRubyApplication::CreateModule();
// Initialize classes ...
CRubyUserInterface::CreateClass();
CRubyScriptEngines::CreateClass();
CRubyCommandNode::CreateClass();
CRubyDocument::CreateClass();
CRubyObject::CreateClass();
}
virtual ~engine()
{
// Shut down the interpreter
}
// k3d::iscript_engine implementation ...
const std::string language()
{
return "Ruby";
}
bool can_execute(const std::string& Script)
{
// Look for magic token
return Script.substr(0, magic_token.size()) == magic_token;
}
bool execute(const std::string& ScriptName, const std::string& Script, const context_t& Context)
{
// Sanity checks ...
return_val_if_fail(Script.size(), false);
return_val_if_fail(ScriptName.size(), false);
/*
// Create the document object and assign it as a global property ...
VALUE document = Document ? CRubyDocument::Create(Document) : RBVAL_FALSE;
VALUE object = Object ? CRubyObject::Create(Object) : RBVAL_FALSE;
rb_define_global_const("MyDocument", document);
rb_define_global_const("MyObject", object);
*/
// Evaluate the script ...
int returncode;
rb_eval_string_protect((char*) Script.c_str(), &returncode);
if(returncode != 0)
{
std::cerr << "Ruby error -> ";
rb_p(ruby_errinfo);
return false;
}
return true;
}
bool halt()
{
return false;
}
void bless_script(std::string& Script)
{
// Don't keep adding magic tokens to code that already has one ...
if(can_execute(Script))
return;
Script.insert(Script.begin(), magic_token.begin(), magic_token.end());
}
bool convert_command(k3d::icommand_node& CommandNode, const std::string& Name, const std::string& Arguments, std::string& Result)
{
Result = "Application.CommandNode(\"";
Result += k3d::command_node_path(CommandNode);
Result += "\").Command(\"";
Result += Name;
Result += "\", \"";
Result += Arguments;
Result += "\");";
return true;
}
};
k3d::iplugin_factory& engine_factory()
{
static k3d::plugin_factory<k3d::application_plugin<engine>, k3d::interface_list<k3d::iscript_engine> > factory(
k3d::classes::RubyEngine(),
"Ruby",
"Ruby scripting engine",
"ScriptEngines");
return factory;
}
} // namespace libk3druby
K3D_MODULE_START(k3d::uuid(0x9b22330f, 0x14284d8f, 0xb43ba5ba, 0x7b6b261b), Registry)
Registry.register_factory(libk3druby::engine_factory());
K3D_MODULE_END
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