PARSING COMMAND LINE IN C++

There is a lot of command line parsing libraries, classes and other stuff. I also contributed to this movement creating my own class TCommandLineParser, doing command line processing work. This is not for self advertisement but I successfully used TCommandLineParser with different compilers: Borland C++, Visual C++, Compaq C++ (former DEC C++), aCC (C++ for HP-UX) and found this tool really convenient.

Let start with simple example:

#include <stdio.h>
#include "commandlineparser.h"

int main(int argc, char **argv)
{
  // create object
  TCommandLineParser commandline;

  // declare options that may appear in command line
  commandline.AddVoid("void");
  // mandatory string parameter
  commandline.AddChar("text", true);
  // optional integer parameter
  commandline.AddInt("integer", );

  // here declaration part ends

  // parse command line
  commandline.AddArguments(argc, argv);
  // is everything ok with command line
  if(!commandline.CheckCommandLine())
  {
    printf("Invalid command line!\n");
    return 1;
  }

  // access options and their values
  if(commandline.FindKey("void"))
  {
    printf("Option /void found in command line.\n");
  }
  // option /text is mandatory, so we are sure - it is here
  printf("Option /text=%s\n", commandline.GetChar("text"));
  // option /integer isn't mandatory. We must check does it present in command line
  if(commandline.FindKey("integer"))
  {
    printf("Option /integer=%d\n", commandline.GetInt("integer"));
  }