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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 convenience methods for working with scripts
\author Tim Shead (tshead@k-3d.com)
*/
#include "application.h"
#include "iapplication_plugin_factory.h"
#include "ideletable.h"
#include "iplugin_factory.h"
#include "iscript_engine.h"
#include "plugins.h"
#include "result.h"
#include "scripting.h"
#include "uuid.h"
#include <sstream>
#include <typeinfo>
namespace k3d
{
namespace detail
{
/// Returns the set of all available scripting languages (cached)
const factories_t& script_engine_factories()
{
static factories_t factories;
if(factories.empty())
factories = plugins<iscript_engine>();
return factories;
}
/// Executes a script using the given plugin factory to create the script engine
bool execute_script(const std::string& Script, const std::string& ScriptName, const iscript_engine::context_t& Context, iplugin_factory& Language)
{
// Sanity checks ...
return_val_if_fail(Script.size(), false);
return_val_if_fail(ScriptName.size(), false);
// Get the requested scripting engine ...
iscript_engine* const engine = dynamic_cast<iscript_engine*>(create_application_plugin(Language));
return_val_if_fail(engine, false);
// Run that bad-boy ...
const bool result = engine->execute(ScriptName, Script, Context);
// Done with the engine ...
delete dynamic_cast<ideletable*>(engine);
return result;
}
} // namespace detail
iplugin_factory* recognize_script_language(const std::string& Script)
{
// Get the set of all script engine factories ...
const factories_t& factories(detail::script_engine_factories());
// Look for a scripting engine that can execute the script ...
for(factories_t::const_iterator factory = factories.begin(); factory != factories.end(); ++factory)
{
iscript_engine* const script_engine = dynamic_cast<iscript_engine*>(create_application_plugin(**factory));
if(!script_engine)
continue;
const bool can_execute = script_engine->can_execute(Script);
delete dynamic_cast<ideletable*>(script_engine);
if(can_execute)
return *factory;
}
// Couldn't find anything ...
return 0;
}
bool execute_script(const std::string& Script, const std::string& ScriptName, const iscript_engine::context_t& Context, const uuid& Language)
{
// Lookup the engine ...
iplugin_factory* const language = plugin(Language);
return_val_if_fail(language, false);
// Make it happen ...
return detail::execute_script(Script, ScriptName, Context, *language);
}
void execute_script(const std::string& Script, const std::string& ScriptName, const iscript_engine::context_t& Context, bool& Recognized, bool& Executed)
{
// Starting state ...
Recognized = false;
Executed = false;
// See which language it's written in ...
iplugin_factory* const language = recognize_script_language(Script);
// If the language wasn't recognized, we're done ...
Recognized = language ? true : false;
if(!Recognized)
return;
// Execute that puppy ...
Executed = detail::execute_script(Script, ScriptName, Context, *language);
}
void execute_script(std::istream& Script, const std::string& ScriptName, const iscript_engine::context_t& Context, bool& Recognized, bool& Executed)
{
// Convert the stream to a string
std::stringstream script;
Script.get(*script.rdbuf(), '\0');
execute_script(script.str(), ScriptName, Context, Recognized, Executed);
}
} // namespace k3d
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