// $Id$
//
//    File: DEventSourceETGenerator.cc
// Created: Wed Aug 9 2006
// Creator: davidl (on Darwin Harriet.local 8.6.0 powerpc)
//


#include <string>
using std::string;

#include <JANA/JApplication.h>

#include "DEventSourceETFactoryGenerator.h"
#include "DEventSourceETGenerator.h"
#include "DEventSourceET.h"

// Routine used to allow us to register our JEventSourceGenerator
extern "C"{
void InitPlugin(JApplication *app){
	app->AddEventSourceGenerator(new DEventSourceETGenerator());
	
	app->AddFactoryGenerator(new DEventSourceETFactoryGenerator());
}
} // "C"

//---------------------------------
// Description
//---------------------------------
const char* DEventSourceETGenerator::Description(void)
{
	return "ET:EVIO";
}

//---------------------------------
// CheckOpenable
//---------------------------------
double DEventSourceETGenerator::CheckOpenable(string source)
{
	/// If the source starts with an "ET:" it is an ET source
	/// and we assume it is in EVIO format. If it does not
	/// start with "ET:", then assume it is an EVIO file
	/// try opening it to see if the magic header is there.
	if(source.substr(0,3) == "ET:"){
		// ET
		return 0.9;
	}else{
		// File
		int handle;
		int err = evOpen((char*)source.c_str(),"r", &handle);
		if(err == S_SUCCESS){
			evClose(handle);
			return 1.0;
		}
	}

	return 0.0;
}

//---------------------------------
// MakeJEventSource
//---------------------------------
JEventSource* DEventSourceETGenerator::MakeJEventSource(string source)
{
	return new DEventSourceET(source.c_str());
}