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

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 *

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 * $Id$

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 *

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

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#include <iostream>

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using namespace std;

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#include "globals.h"

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

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const char *help_states =

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    "[OPTIONS] <STATE>\n"

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    "\n"

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    "Request an application-layer state change for the specified slaves.\n"

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    "\n"

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    "Arguments:\n"

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    "  STATE can be 'INIT', 'PREOP', 'SAFEOP', or 'OP'\n"

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    "\n"

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    "Command-specific options:\n"

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    "  --slave -s <index>  Positive numerical ring position, or 'all' for\n"

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    "                      all slaves (default).\n"

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    "\n"

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    "Numerical values can be specified either with decimal (no prefix),\n"

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    "octal (prefix '0') or hexadecimal (prefix '0x') base.\n";

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

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void command_states(void)

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{

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    stringstream err;

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    string stateStr;

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    uint8_t state;

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

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        err << "'" << commandName << "' takes exactly one argument!";

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        throw InvalidUsageException(err);

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    }

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    stateStr = commandArgs[0];

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    transform(stateStr.begin(), stateStr.end(),

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            stateStr.begin(), (int (*) (int)) std::toupper);

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    if (stateStr == "INIT") {

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        state = 0x01;

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    } else if (stateStr == "PREOP") {

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        state = 0x02;

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    } else if (stateStr == "SAFEOP") {

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        state = 0x04;

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    } else if (stateStr == "OP") {

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        state = 0x08;

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    } else {

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        err << "Invalid state '" << commandArgs[0] << "'!";

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        throw InvalidUsageException(err);

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    }

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    masterDev.open(MasterDevice::ReadWrite);

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    if (slavePosition == -1) {

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        unsigned int i, numSlaves = masterDev.slaveCount();

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        for (i = 0; i < numSlaves; i++)

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            masterDev.requestState(i, state);

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    } else {

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        masterDev.requestState(slavePosition, state);

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    }

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}

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