path: root/mmc_updater/depends/AnyOption/anyoption.cpp

/*
 * AnyOption 1.3  
 *
 * kishan at hackorama dot com  www.hackorama.com JULY 2001 
 *
 * + Acts as a common facade class for reading 
 *   commandline options as well as options from
 *   an optionfile with delimited type value pairs 
 *
 * + Handles the POSIX style single character options ( -w )
 *   as well as the newer GNU long options ( --width )
 * 
 * + The option file assumes the traditional format of
 *   first character based comment lines and type value
 *   pairs with a delimiter , and flags which are not pairs
 * 
 *  	# this is a coment
 *  	# next line is an option value pair
 *  	width : 100
 *     	# next line is a flag 
 *      noimages   
 * 
 * + Supports printing out Help and Usage  
 * 
 * + Why not just use getopt() ? 
 *
 *   getopt() Its a POSIX standard not part of ANSI-C. 
 *   So it may not be available on platforms like Windows.
 *
 * + Why it is so long ?
 *
 *   The actual code which does command line parsing 
 *   and option file parsing are done in  few methods. 
 *   Most of the extra code are for providing a flexible
 *   common public interface to both a resourcefile and
 *   and command line supporting POSIX style and  
 *   GNU long option as well as mixing of both. 
 * 
 * + Please see "anyoption.h" for public method descriptions 
 *   
 */

/* Updated Auguest 2004 
 * Fix from  Michael D Peters (mpeters at sandia.gov) 
 * to remove static local variables, allowing multiple instantiations 
 * of the reader (for using multiple configuration files).  There is
 * an error in the destructor when using multiple instances, so you
 * cannot delete your objects (it will crash), but not calling the 
 * destructor only introduces a small memory leak, so I
 * have not bothered tracking it down.
 *
 * Also updated to use modern C++ style headers, rather than
 * depricated iostream.h (it was causing my compiler problems)
*/

/* 
 * Updated September 2006  
 * Fix from Boyan Asenov for a bug in mixing up option indexes 
 * leading to exception when mixing different options types
 */

#include "anyoption.h"

#include <string.h>

AnyOption::AnyOption()
{
	init();
}

AnyOption::AnyOption(int maxopt)
{
	init( maxopt , maxopt );
}

AnyOption::AnyOption(int maxopt, int maxcharopt)
{
	init( maxopt , maxcharopt );
}

AnyOption::~AnyOption()
{
	if( mem_allocated )
		cleanup();
}

void
AnyOption::init()
{
	init( DEFAULT_MAXOPTS , DEFAULT_MAXOPTS );
}

void
AnyOption::init(int maxopt, int maxcharopt )
{

	max_options 	= maxopt;
	max_char_options = maxcharopt;
	max_usage_lines	= DEFAULT_MAXUSAGE;
	usage_lines	= 0 ;
	argc 		= 0;
	argv 		= NULL;
	posix_style	= true;
	verbose 	= false;
	filename 	= NULL;
	appname 	= NULL;	
	option_counter 	= 0;
	optchar_counter	= 0;
	new_argv 	= NULL;
	new_argc 	= 0 ;
	max_legal_args 	= 0 ;
	command_set 	= false;
	file_set 	= false;
	values 		= NULL;	
	g_value_counter = 0;
	mem_allocated 	= false;
	command_set 	= false;
	file_set	= false;
	opt_prefix_char     = '-';
	file_delimiter_char = ':';
	file_comment_char   = '#';
	equalsign 	= '=';
	comment       = '#' ;
	delimiter     = ':' ;
	endofline     = '\n';
	whitespace    = ' ' ;
	nullterminate = '\0';
	set = false;
	once = true;
	hasoptions = false;
	autousage = false;

	strcpy( long_opt_prefix , "--" );

	if( alloc() == false ){
		cout << endl << "OPTIONS ERROR : Failed allocating memory" ;
		cout << endl ;
		cout << "Exiting." << endl ;
		exit (0);
	}
}

bool
AnyOption::alloc()
{
	int i = 0 ;
	int size = 0 ;

	if( mem_allocated )
		return true;

	size = (max_options+1) * sizeof(const char*);