[SOLVED] Csci 4547 / 6647 program 4b: getopt_long()

1 Goals
1. To finish program 4 by including and processing long options.
2 Instructions
Write a program to parse the command line for DiskSweeper. Due Sept. 22 (Friday).
Add to your Params class. Members of the class should include:
• A bool variable for the debug option and an int for the optional level number.
• A bool variable for the verbose option.
Define a controller class named Sweeper. Private data members of the Sweeper class should
include:
• A Params object.
• Move the ofstream from the Params class to the Sweeper class.
Public members of the Params class should include:
• A constructor that accepts argc and argv from main. This constructor must pass argc and
argv to the Params constructor using a ctor. The Params constructor will parse the command
line and initialize the Params object.
• A run() function: Call this from main after declaring the Sweeper object. For now, it should
simply call Params::print() to display the params. More functionality will be added later.
• Any other functions you need. You will be adding members to this class each week.
In your main function:
• Call banner() from tools.cpp.
• Create a Sweeper object.
• Call its run function.
• Nothing else.
3 Using getopt_long() to Decode Command-line Arguments
You still need nearly all of what you wrote for Program 4a. Here are the changes. For more
guidance, refer to options2.c
• The call has two more parameters:
int = getopt_long( int argc, char* argv[], const char* opts,
struct option longOpts[], int*);
• You must pick up and process any additional options and arguments.
• You need to define a long options table. Example:
struct option longOpts[] = {
{ “verbose”, no_argument, NULL, ’b’ },
{ “output”, required_argument, NULL, ’o’ },
{ “recursive”, no_argument, NULL, ’R’ },
{ “debug”, optional_argument, NULL, 0 },
{ NULL, 0, NULL, 0 }
};
• Add this statement to your switch to process long options (such as debug) that do not have
corresponding short options.
case 0: { // Convert code for long switch to full name.
outputLong(longOpts[code].name, optarg);
break;
};
• After all switches have been processed, pick up and store the single required argument.