Visual Servoing Platform  version 3.6.1 under development (2024-03-18)
parse-argv2.cpp

Example of command line parsing.

/****************************************************************************
*
* ViSP, open source Visual Servoing Platform software.
* Copyright (C) 2005 - 2023 by Inria. All rights reserved.
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* it under the terms of the GNU General Public License as published by
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* Campus Universitaire de Beaulieu
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*
* Description:
* Example of command line parsing.
*
*
*****************************************************************************/
#include <iomanip>
#include <sstream>
#include <stdio.h>
#include <visp3/core/vpDebug.h>
#include <visp3/io/vpParseArgv.h>
int main(int argc, const char **argv)
{
try {
using ::std::cout;
using ::std::endl;
bool bool_val = false;
int int_val = 3;
long long_val = 33333333;
float float_val = 3.14f;
double double_val = 3.1415;
char *string_val = nullptr;
vpParseArgv::vpArgvInfo argTable[] = {
{"-bool", vpParseArgv::ARGV_CONSTANT_BOOL, 0, (char *)&bool_val, "Bool enabled."},
{"-integer", vpParseArgv::ARGV_INT, (char *)nullptr, (char *)&int_val, "An integer value."},
{"-long", vpParseArgv::ARGV_LONG, (char *)nullptr, (char *)&long_val, "A long value."},
{"-float", vpParseArgv::ARGV_FLOAT, (char *)nullptr, (char *)&float_val, "A float value."},
{"-double", vpParseArgv::ARGV_DOUBLE, (char *)nullptr, (char *)&double_val, "A double value."},
{"-string", vpParseArgv::ARGV_STRING, (char *)nullptr, (char *)&string_val, "A chain value."},
{"-h", vpParseArgv::ARGV_HELP, (char *)nullptr, (char *)nullptr, "Print the help."},
{(char *)nullptr, vpParseArgv::ARGV_END, (char *)nullptr, (char *)nullptr, (char *)nullptr}};
// Read the command line options
if (vpParseArgv::parse(&argc, argv, argTable, vpParseArgv::ARGV_NO_DEFAULTS)) {
return EXIT_FAILURE;
}
cout << "Your parameters: " << endl;
cout << " Bool value: " << bool_val << endl;
cout << " Integer value: " << int_val << endl;
cout << " Long value: " << long_val << endl;
cout << " Float value: " << float_val << endl;
cout << " Double value: " << double_val << endl;
if (string_val != nullptr)
cout << " String value: " << string_val << endl;
else
cout << " String value: \"\"" << endl << endl;
cout << "Call " << argv[0] << " -h to see how to change these parameters." << endl;
return EXIT_SUCCESS;
} catch (const vpException &e) {
std::cout << "Catch a ViSP exception: " << e.getStringMessage() << std::endl;
return EXIT_FAILURE;
}
}
error that can be emitted by ViSP classes.
Definition: vpException.h:59
const std::string & getStringMessage() const
Definition: vpException.cpp:66
static bool parse(int *argcPtr, const char **argv, vpArgvInfo *argTable, int flags)
Definition: vpParseArgv.cpp:69
@ ARGV_NO_DEFAULTS
No default options like -help.
Definition: vpParseArgv.h:168
@ ARGV_DOUBLE
Argument is associated to a double.
Definition: vpParseArgv.h:157
@ ARGV_LONG
Argument is associated to a long.
Definition: vpParseArgv.h:153
@ ARGV_STRING
Argument is associated to a char * string.
Definition: vpParseArgv.h:154
@ ARGV_FLOAT
Argument is associated to a float.
Definition: vpParseArgv.h:156
@ ARGV_INT
Argument is associated to an int.
Definition: vpParseArgv.h:152
@ ARGV_CONSTANT_BOOL
Stand alone argument associated to a bool var that is set to true.
Definition: vpParseArgv.h:151
@ ARGV_END
End of the argument list.
Definition: vpParseArgv.h:161
@ ARGV_HELP
Argument is for help displaying.
Definition: vpParseArgv.h:160