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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 <getopt.h>

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#include <libgen.h> // basename()

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#include <stdlib.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 "CommandAlias.h"

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#include "CommandConfig.h"

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#include "CommandData.h"

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#include "CommandDebug.h"

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#include "CommandDomains.h"

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#include "CommandDownload.h"

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#include "CommandMaster.h"

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#include "CommandPdos.h"

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#include "CommandSdos.h"

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#include "CommandSiiRead.h"

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#include "CommandSiiWrite.h"

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#include "CommandSlaves.h"

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#include "CommandStates.h"

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#include "CommandUpload.h"

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#include "CommandVersion.h"

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#include "CommandXml.h"

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

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typedef list<Command *> CommandList;

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CommandList commandList;

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MasterDevice masterDev;

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string binaryBaseName;

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string commandName;

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Command::StringVector commandArgs;

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// option variables

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unsigned int masterIndex = 0;

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int slavePosition = -1;

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int slaveAlias = -1;

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int domainIndex = -1;

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string dataTypeStr;

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Command::Verbosity verbosity = Command::Normal;

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bool force = false;

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bool helpRequested = false;

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

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string usage()

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{

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    stringstream str;

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    CommandList::const_iterator ci;

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    size_t maxWidth = 0;

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    for (ci = commandList.begin(); ci != commandList.end(); ci++) {

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        if ((*ci)->getName().length() > maxWidth) {

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            maxWidth = (*ci)->getName().length();

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        }

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    }

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    str << "Usage: " << binaryBaseName << " <COMMAND> [OPTIONS] [ARGUMENTS]"

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        << endl << endl

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		<< "Commands (can be abbreviated):" << endl;

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    str << left;

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    for (ci = commandList.begin(); ci != commandList.end(); ci++) {

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        str << "  " << setw(maxWidth) << (*ci)->getName()

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            << "  " << (*ci)->getBriefDescription() << endl;

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    }

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    str << endl

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		<< "Global options:" << endl

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        << "  --master  -m <master>  Index of the master to use. Default: 0."

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		<< endl

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        << "  --force   -f           Force a command." << endl

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        << "  --quiet   -q           Output less information." << endl

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        << "  --verbose -v           Output more information." << endl

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        << "  --help    -h           Show this help." << endl

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        << endl

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        << Command::numericInfo()

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        << endl

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        << "Call '" << binaryBaseName

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        << " <COMMAND> --help' for command-specific help." << endl

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        << endl

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        << "Send bug reports to " << PACKAGE_BUGREPORT << "." << endl;

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    return str.str();

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}

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

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void getOptions(int argc, char **argv)

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{

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    int c, argCount;

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    stringstream str;

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    static struct option longOptions[] = {

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        //name,      has_arg,           flag, val

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        {"master",   required_argument, NULL, 'm'},

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        {"alias",    required_argument, NULL, 'a'},

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        {"position", required_argument, NULL, 'p'},

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        {"domain",   required_argument, NULL, 'd'},

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        {"type",     required_argument, NULL, 't'},

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        {"force",    no_argument,       NULL, 'f'},

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        {"quiet",    no_argument,       NULL, 'q'},

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        {"verbose",  no_argument,       NULL, 'v'},

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        {"help",     no_argument,       NULL, 'h'},

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        {}

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    };

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    do {

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        c = getopt_long(argc, argv, "m:a:p:d:t:fqvh", longOptions, NULL);

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        switch (c) {

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            case 'm':

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                str.clear();

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                str.str("");

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                str << optarg;

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                str >> resetiosflags(ios::basefield) // guess base from prefix

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                    >> masterIndex;

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                if (str.fail() || masterIndex < 0) {

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                    cerr << "Invalid master number " << optarg << "!" << endl

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                        << endl << usage();

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                    exit(1);

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                }

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                break;

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            case 'a':

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                str.clear();

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                str.str("");

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                str << optarg;

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                str >> resetiosflags(ios::basefield) // guess base from prefix

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                    >> slaveAlias;

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                if (str.fail() || slaveAlias < 0 || slaveAlias > 0xFFFF) {

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                    cerr << "Invalid slave alias " << optarg << "!" << endl

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                        << endl << usage();

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                    exit(1);

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                }

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                break;

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            case 'p':

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                str.clear();

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                str.str("");

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                str << optarg;

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                str >> resetiosflags(ios::basefield) // guess base from prefix

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                    >> slavePosition;

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                if (str.fail()

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                        || slavePosition < 0 || slavePosition > 0xFFFF) {

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                    cerr << "Invalid slave position " << optarg << "!" << endl

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                        << endl << usage();

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                    exit(1);

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                }

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                break;

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            case 'd':

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                str.clear();

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                str.str("");

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                str << optarg;

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                str >> resetiosflags(ios::basefield) // guess base from prefix

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                    >> domainIndex;

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                if (str.fail() || domainIndex < 0) {

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                    cerr << "Invalid domain index " << optarg << "!" << endl

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                        << endl << usage();

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                    exit(1);

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                }

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                break;

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            case 't':

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                dataTypeStr = optarg;

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                break;

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            case 'f':

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                force = true;

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                break;

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            case 'q':

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                verbosity = Command::Quiet;

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                break;

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            case 'v':

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                verbosity = Command::Verbose;

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                break;

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            case 'h':

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                helpRequested = true;

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                break;

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            case '?':

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                cerr << endl << usage();

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                exit(1);

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            default:

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                break;

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        }

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    }

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    while (c != -1);

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	argCount = argc - optind;

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    if (!argCount) {

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        if (helpRequested) {

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            cout << usage();

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            exit(0);

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        } else {

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            cerr << "Please specify a command!" << endl

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                << endl << usage();

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            exit(1);

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        }

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	}

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    commandName = argv[optind];

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    while (++optind < argc)

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        commandArgs.push_back(string(argv[optind]));

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}

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

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list<Command *> getMatchingCommands(const string &cmdStr)

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{

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    CommandList::iterator ci;

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    list<Command *> res;

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    // find matching commands from beginning of the string

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    for (ci = commandList.begin(); ci != commandList.end(); ci++) {

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        if ((*ci)->matchesSubstr(cmdStr)) {

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            res.push_back(*ci);

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        }

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    }

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    if (!res.size()) { // nothing found

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        // find /any/ matching commands

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        for (ci = commandList.begin(); ci != commandList.end(); ci++) {

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            if ((*ci)->matchesAbbrev(cmdStr)) {

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                res.push_back(*ci);

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            }

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        }

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    }

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    return res;

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}

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

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int main(int argc, char **argv)

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{

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    int retval = 0;

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    list<Command *> matchingCommands;

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    list<Command *>::const_iterator ci;

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    Command *cmd;

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    binaryBaseName = basename(argv[0]);

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    commandList.push_back(new CommandAlias());

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    commandList.push_back(new CommandConfig());

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    commandList.push_back(new CommandData());

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    commandList.push_back(new CommandDebug());

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    commandList.push_back(new CommandDomains());

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    commandList.push_back(new CommandDownload());

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    commandList.push_back(new CommandMaster());

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    commandList.push_back(new CommandPdos());

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    commandList.push_back(new CommandSdos());

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    commandList.push_back(new CommandSiiRead());

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    commandList.push_back(new CommandSiiWrite());

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    commandList.push_back(new CommandSlaves());

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    commandList.push_back(new CommandStates());

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    commandList.push_back(new CommandUpload());

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    commandList.push_back(new CommandVersion());

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    commandList.push_back(new CommandXml());

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	getOptions(argc, argv);

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    matchingCommands = getMatchingCommands(commandName);

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    masterDev.setIndex(masterIndex);

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    if (matchingCommands.size()) {

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        if (matchingCommands.size() == 1) {

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            cmd = matchingCommands.front();

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            if (!helpRequested) {

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                try {

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                    cmd->setVerbosity(verbosity);

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                    cmd->setAlias(slaveAlias);

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                    cmd->setPosition(slavePosition);

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                    cmd->setDomain(domainIndex);

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                    cmd->setDataType(dataTypeStr);

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                    cmd->setForce(force);

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                    cmd->execute(masterDev, commandArgs);

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                } catch (InvalidUsageException &e) {

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                    cerr << e.what() << endl << endl;

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                    cerr << binaryBaseName << " " << cmd->helpString();

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                    retval = 1;

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                } catch (CommandException &e) {

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                    cerr << e.what() << endl;

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                    retval = 1;

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                } catch (MasterDeviceException &e) {

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                    cerr << e.what() << endl;

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                    retval = 1;

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                }

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            } else {

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                cout << binaryBaseName << " " << cmd->helpString();

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            }

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        } else {

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            cerr << "Ambiguous command abbreviation! Matching:" << endl;

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            for (ci = matchingCommands.begin();

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                    ci != matchingCommands.end();

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                    ci++) {

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                cerr << (*ci)->getName() << endl;

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            }

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            cerr << endl << usage();

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            retval = 1;

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        }

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    } else {

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        cerr << "Unknown command " << commandName << "!" << endl

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            << endl << usage();

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        retval = 1;

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    }

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	return retval;

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}

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