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/*****************************************************************************

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 *

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 *  $Id$

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 *

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 *  Copyright (C) 2006-2009  Florian Pose, Ingenieurgemeinschaft IgH

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 *

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 *  This file is part of the IgH EtherCAT Master.

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 *

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 *  The IgH EtherCAT Master is free software; you can redistribute it and/or

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 *  modify it under the terms of the GNU General Public License version 2, as

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 *  published by the Free Software Foundation.

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 *

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 *  The IgH EtherCAT Master is distributed in the hope that it will be useful,

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 *  but WITHOUT ANY WARRANTY; without even the implied warranty of

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 *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General

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 *  Public License for more details.

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 *

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 *  You should have received a copy of the GNU General Public License along

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 *  with the IgH EtherCAT Master; if not, write to the Free Software

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 *  Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA  02110-1301  USA

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 *

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 *  ---

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 *

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 *  The license mentioned above concerns the source code only. Using the

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 *  EtherCAT technology and brand is only permitted in compliance with the

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 *  industrial property and similar rights of Beckhoff Automation GmbH.

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 *

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 ****************************************************************************/

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#include <string.h>

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#include <iostream>

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#include <iomanip>

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using namespace std;

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#include "CommandFoeRead.h"

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#include "foe.h"

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/*****************************************************************************/

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CommandFoeRead::CommandFoeRead():

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    FoeCommand("foe_read", "Read a file from a slave via FoE.")

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{

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}

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/*****************************************************************************/

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string CommandFoeRead::helpString() const

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{

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    stringstream str;

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    str << getName() << " [OPTIONS] <SOURCEFILE>" << endl

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    	<< endl

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    	<< getBriefDescription() << endl

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    	<< endl

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        << "This command requires a single slave to be selected." << endl

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    	<< endl

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        << "Arguments:" << endl

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        << "  SOURCEFILE is the name of the source file on the slave." << endl

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        << endl

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    	<< "Command-specific options:" << endl

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        << "  --output-file -o <file>   Local target filename. If" << endl

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        << "                            '-' (default), data are" << endl

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        << "                            printed to stdout." << endl

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        << "  --alias       -a <alias>  " << endl

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        << "  --position    -p <pos>    Slave selection. See the help" << endl

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        << "                            of the 'slaves' command." << endl

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    	<< endl

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		<< numericInfo();

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	return str.str();

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}

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/****************************************************************************/

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void CommandFoeRead::execute(MasterDevice &m, const StringVector &args)

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{

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    SlaveList slaves;

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    ec_ioctl_slave_t *slave;

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    ec_ioctl_slave_foe_t data;

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    unsigned int i;

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    stringstream err;

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    if (args.size() != 1) {

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        err << "'" << getName() << "' takes exactly one argument!";

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        throwInvalidUsageException(err);

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    }

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    m.open(MasterDevice::Read);

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    slaves = selectedSlaves(m);

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    if (slaves.size() != 1) {

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        throwSingleSlaveRequired(slaves.size());

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    }

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    slave = &slaves.front();

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    data.slave_position = slave->position;

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    /* FIXME: No good idea to have a fixed buffer size.

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     * Read in chunks and fill a buffer instead.

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     */

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    data.offset = 0;

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    data.buffer_size = 0x8800;

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    data.buffer = new uint8_t[data.buffer_size];

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    strncpy(data.file_name, args[0].c_str(), sizeof(data.file_name));

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	try {

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		m.readFoe(&data);

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	} catch (MasterDeviceException &e) {

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        delete [] data.buffer;

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        if (data.result) {

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            if (data.result == FOE_OPCODE_ERROR) {

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                err << "FoE read aborted with error code 0x"

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                    << setw(8) << setfill('0') << hex << data.error_code

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                    << ": " << errorText(data.error_code);

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            } else {

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                err << "Failed to write via FoE: "

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                    << resultText(data.result);

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            }

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            throwCommandException(err);

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        } else {

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            throw e;

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        }

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	}

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    // TODO --output-file

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	for (i = 0; i < data.data_size; i++) {

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		uint8_t *w = data.buffer + i;

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		cout << *(uint8_t *) w ;

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	}

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    delete [] data.buffer;

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}

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/*****************************************************************************/