argumentParser.cc

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// SPDX-FileCopyrightText: Deutsches Elektronen-Synchrotron DESY, MSK, ChimeraTK Project <chimeratk-support@desy.de>
// SPDX-License-Identifier: LGPL-3.0-or-later
 
#include "argumentParser.h"
 
#include <string>
 
static const unsigned int DEFAULT_SERVER_PORT = 5001;
static const std::string DEFAULT_MAP_FILE = "./testFile.map";
static const unsigned int DEFAULT_PROTOCOL_VERSION = 0x0;
 
/**********************************************************************************************************************/
struct Argument {
  std::string _shortName;
  std::string _longName;
 
  Argument(std::string shortName, std::string longName) : _shortName(shortName), _longName(longName) {}
};
std::string getArgumentValue(Argument& argument, char** argumentArray);
 
/**********************************************************************************************************************/
 
unsigned int getPortNumber(char** argumentArray) {
  Argument portFlag("-p", "--port");
  std::string portNumber = getArgumentValue(portFlag, argumentArray);
 
  try {
    return std::stoul(portNumber);
  }
  catch(...) {
    return DEFAULT_SERVER_PORT;
  }
}
std::string getMapFileLocation(char** argumentArray) {
  Argument mapFileLocationFlag("-m", "--mapfile");
  std::string mapFileLocation = getArgumentValue(mapFileLocationFlag, argumentArray);
 
  if(mapFileLocation.empty()) {
    return DEFAULT_MAP_FILE;
  }
  else {
    return mapFileLocation;
  }
}
 
unsigned int getProtocolVersion(char** argumentArray) {
  Argument protocolVersionFlag("-V", "--protocol-version");
  std::string protocolVersion = getArgumentValue(protocolVersionFlag, argumentArray);
 
  try {
    return std::stoul(protocolVersion);
  }
  catch(...) {
    return DEFAULT_PROTOCOL_VERSION;
  }
}
 
std::string getArgumentValue(Argument& argument, char** argumentArray) {
  if(*argumentArray == nullptr || *(argumentArray + 1) == nullptr) {
    return std::string();
  }
  else if(argument._shortName == *argumentArray || argument._longName == *argumentArray) {
    return std::string(*(argumentArray + 1));
  }
  return getArgumentValue(argument, argumentArray + 1);
}