/** 
 * @file lliopipe.cpp
 * @author Phoenix
 * @date 2004-11-19
 * @brief Implementation of the LLIOPipe class
 *
 * Copyright (c) 2004-$CurrentYear$, Linden Research, Inc.
 * $License$
 */

#include "linden_common.h"
#include "lliopipe.h"

#include "llpumpio.h"

static const std::string STATUS_SUCCESS_NAMES[LLIOPipe::STATUS_SUCCESS_COUNT] =
{
	std::string("STATUS_OK"),
	std::string("STATUS_STOP"),
	std::string("STATUS_DONE"),
	std::string("STATUS_BREAK"),
	std::string("STATUS_NEED_PROCESS"),
};

static const std::string STATUS_ERROR_NAMES[LLIOPipe::STATUS_ERROR_COUNT] =
{
	std::string("STATUS_ERROR"),
	std::string("STATUS_NOT_IMPLEMENTED"),
	std::string("STATUS_PRECONDITION_NOT_MET"),
	std::string("STATUS_NO_CONNECTION"),
	std::string("STATUS_EXPIRED"),
};

// Debugging schmutz for deadlock
const char	*gPumpFile = "";
S32			gPumpLine = 0;

void pump_debug(const char *file, S32 line)
{
	gPumpFile = file;
	gPumpLine = line;
}

/**
 * LLIOPipe
 */
LLIOPipe::LLIOPipe() :
	mReferenceCount(0)
{
}

LLIOPipe::~LLIOPipe()
{
	//lldebugs << "destroying LLIOPipe" << llendl;
}

// static
std::string LLIOPipe::lookupStatusString(EStatus status)
{
	if((status >= 0) && (status < STATUS_SUCCESS_COUNT))
	{
		return STATUS_SUCCESS_NAMES[status];
	}
	else
	{
		S32 error_code = ((S32)status * -1) - 1;
		if(error_code < STATUS_ERROR_COUNT)
		{
			return STATUS_ERROR_NAMES[error_code];
		}
	}
	std::string rv;
	return rv;
}

LLIOPipe::EStatus LLIOPipe::process(
	const LLChannelDescriptors& channels,
	buffer_ptr_t& buffer,
	bool& eos,
	LLSD& context,
	LLPumpIO* pump)
{
	return process_impl(channels, buffer, eos, context, pump);
}

// virtual
LLIOPipe::EStatus LLIOPipe::handleError(
	LLIOPipe::EStatus status,
	LLPumpIO* pump)
{
	// by default, the error is not handled.
	return status;
}