--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/XGetopt.c	Fri Jul 09 07:26:16 2004 -0700
@@ -0,0 +1,199 @@
+// XGetopt.cpp  Version 1.1
+//
+// Author:  Hans Dietrich
+//          hdietrich2@hotmail.com
+//
+// Modified: David Smith
+//           dave.s@earthcorp.com
+//           Moved two char declarations from body of function so
+//           that it can compile as a C function.
+//           Thanks so much Hans
+//
+// This software is released into the public domain.
+// You are free to use it in any way you like.
+//
+// This software is provided "as is" with no expressed
+// or implied warranty.  I accept no liability for any
+// damage or loss of business that this software may cause.
+//
+///////////////////////////////////////////////////////////////////////////////
+
+#include <stdio.h>
+#include <string.h>
+#include "XGetopt.h"
+
+///////////////////////////////////////////////////////////////////////////////
+//
+//  X G e t o p t . c p p
+//
+//
+//  NAME
+//       getopt -- parse command line options
+//
+//  SYNOPSIS
+//       int getopt(int argc, char *argv[], char *optstring)
+//
+//       extern char *optarg;
+//       extern int optind;
+//
+//  DESCRIPTION
+//       The getopt() function parses the command line arguments. Its
+//       arguments argc and argv are the argument count and array as
+//       passed into the application on program invocation.  In the case
+//       of Visual C++ programs, argc and argv are available via the
+//       variables __argc and __argv (double underscores), respectively.
+//       getopt returns the next option letter in argv that matches a
+//       letter in optstring.
+//
+//       optstring is a string of recognized option letters;  if a letter
+//       is followed by a colon, the option is expected to have an argument
+//       that may or may not be separated from it by white space.  optarg
+//       is set to point to the start of the option argument on return from
+//       getopt.
+//
+//       Option letters may be combined, e.g., "-ab" is equivalent to
+//       "-a -b".  Option letters are case sensitive.
+//
+//       getopt places in the external variable optind the argv index
+//       of the next argument to be processed.  optind is initialized
+//       to 0 before the first call to getopt.
+//
+//       When all options have been processed (i.e., up to the first
+//       non-option argument), getopt returns EOF, optarg will point
+//       to the argument, and optind will be set to the argv index of
+//       the argument.  If there are no non-option arguments, optarg
+//       will be set to NULL.
+//
+//       The special option "--" may be used to delimit the end of the
+//       options;  EOF will be returned, and "--" (and everything after it)
+//       will be skipped.
+//
+//  RETURN VALUE
+//       For option letters contained in the string optstring, getopt
+//       will return the option letter.  getopt returns a question mark (?)
+//       when it encounters an option letter not included in optstring.
+//       EOF is returned when processing is finished.
+//
+//  BUGS
+//       1)  Long options are not supported.
+//       2)  The GNU double-colon extension is not supported.
+//       3)  The environment variable POSIXLY_CORRECT is not supported.
+//       4)  The + syntax is not supported.
+//       5)  The automatic permutation of arguments is not supported.
+//       6)  This implementation of getopt() returns EOF if an error is
+//           encountered, instead of -1 as the latest standard requires.
+//
+//  EXAMPLE
+//       BOOL CMyApp::ProcessCommandLine(int argc, char *argv[])
+//       {
+//           int c;
+//
+//           while ((c = getopt(argc, argv, "aBn:")) != EOF)
+//           {
+//               switch (c)
+//               {
+//                   case 'a':
+//                       TRACE(_T("option a\n"));
+//                       //
+//                       // set some flag here
+//                       //
+//                       break;
+//
+//                   case 'B':
+//                       TRACE( _T("option B\n"));
+//                       //
+//                       // set some other flag here
+//                       //
+//                       break;
+//
+//                   case 'n':
+//                       TRACE(_T("option n: value=%d\n"), atoi(optarg));
+//                       //
+//                       // do something with value here
+//                       //
+//                       break;
+//
+//                   case '?':
+//                       TRACE(_T("ERROR: illegal option %s\n"), argv[optind-1]);
+//                       return FALSE;
+//                       break;
+//
+//                   default:
+//                       TRACE(_T("WARNING: no handler for option %c\n"), c);
+//                       return FALSE;
+//                       break;
+//               }
+//           }
+//           //
+//           // check for non-option args here
+//           //
+//           return TRUE;
+//       }
+//
+///////////////////////////////////////////////////////////////////////////////
+
+char	*optarg;		// global argument pointer
+int		optind = 0; 	// global argv index
+
+int getopt(int argc, char *argv[], char *optstring)
+{
+	static char *next = NULL;
+  char c, *cp;
+	if (optind == 0)
+		next = NULL;
+
+	optarg = NULL;
+
+	if (next == NULL || *next == '\0')
+	{
+		if (optind == 0)
+			optind++;
+
+		if (optind >= argc || argv[optind][0] != '-' || argv[optind][1] == '\0')
+		{
+			optarg = NULL;
+			if (optind < argc)
+				optarg = argv[optind];
+			return EOF;
+		}
+
+		if (strcmp(argv[optind], "--") == 0)
+		{
+			optind++;
+			optarg = NULL;
+			if (optind < argc)
+				optarg = argv[optind];
+			return EOF;
+		}
+
+		next = argv[optind]+1;
+		optind++;
+	}
+
+	c = *next++;
+	cp = strchr(optstring, c);
+
+	if (cp == NULL || c == ':')
+		return '?';
+
+	cp++;
+	if (*cp == ':')
+	{
+		if (*next != '\0')
+		{
+			optarg = next;
+			next = NULL;
+		}
+		else if (optind < argc)
+		{
+			optarg = argv[optind];
+			optind++;
+		}
+		else
+		{
+			return '?';
+		}
+	}
+
+	return c;
+}