view Lib/fftw-3.2.1/libbench2/my-getopt.c @ 1:e86e9c111b29

Updates stuff that potentially fixes the memory leak and also makes it work on Windows and Linux (Need to test). Still have to fix fftw include for linux in Jucer.

/*
 * Copyright (c) 2003, 2007-8 Matteo Frigo
 * Copyright (c) 2003, 2007-8 Massachusetts Institute of Technology
 *
 * This program is free software; you can redistribute it and/or modify
 * it under the terms of the GNU General Public License as published by
 * the Free Software Foundation; either version 2 of the License, or
 * (at your option) any later version.
 *
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with this program; if not, write to the Free Software
 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
 *
 */

#include <string.h>
#include <stdio.h>

#include "my-getopt.h"

int my_optind = 1;
const char *my_optarg = 0;
static const char *scan_pointer = 0;

void my_usage(const char *progname, const struct my_option *opt)
{
    int i;
    size_t col = 0;

    fprintf(stdout, "Usage: %s", progname);
    col += (strlen(progname) + 7);
    for (i = 0; opt[i].long_name; i++) {
	size_t option_len;

	option_len = strlen(opt[i].long_name);
	if (col >= 80 - (option_len + 16)) {
	    fputs("\n\t", stdout);
	    col = 8;
	}
	fprintf(stdout, " [--%s", opt[i].long_name);
	col += (option_len + 4);
	if (opt[i].short_name < 128) {
	    fprintf(stdout, " | -%c", opt[i].short_name);
	    col += 5;
	}
	switch (opt[i].argtype) {
	    case REQARG:
		 fputs(" arg]", stdout);
		 col += 5;
		 break;
	    case OPTARG:
		 fputs(" [arg]]", stdout);
		 col += 10;
		 break;
	    default:
		 fputs("]", stdout);
		 col++;
	}
    }

    fputs ("\n", stdout);
}

int my_getopt(int argc, char *argv[], const struct my_option *optarray)
{
     const char *p;
     const struct my_option *l;

     if (scan_pointer && *scan_pointer) {
	  /* continue a previously scanned argv[] element */
	  p = scan_pointer;
	  goto short_option;
     } else {
	  /* new argv[] element */
	  if (my_optind >= argc)
	       return -1; /* no more options */

	  p = argv[my_optind];
     
	  if (*p++ != '-')  
	       return (-1); /* not an option */

	  if (!*p) 
	       return (-1); /* string is exactly '-' */
	       
	  ++my_optind;
     }

     if (*p == '-') {
	  /* long option */
	  scan_pointer = 0;
	  my_optarg = 0;

	  ++p;
	  
	  for (l = optarray; l->short_name; ++l) {
	       size_t len = strlen(l->long_name);
	       if (!strncmp(l->long_name, p, len) && 
		   (!p[len] || p[len] == '=')) {
		    switch (l->argtype) {
			case NOARG: 
			     goto ok;
			case OPTARG: 
			     if (p[len] == '=')
				  my_optarg = p + len + 1;
			     goto ok;
			case REQARG: 
			     if (p[len] == '=') {
				  my_optarg = p + len + 1;
				  goto ok;
			     }
			     if (my_optind >= argc) {
				  fprintf(stderr, 
					  "option --%s requires an argument\n",
					  l->long_name);
				  return '?';
			     }
			     my_optarg = argv[my_optind];
			     ++my_optind;
			     goto ok;
		    }
	       }
	  }
     } else {
     short_option:
	  scan_pointer = 0;
	  my_optarg = 0;

	  for (l = optarray; l->short_name; ++l) {
	       if (l->short_name == (char)l->short_name &&
		   *p == l->short_name) {
		    ++p;
		    switch (l->argtype) {
			case NOARG: 
			     scan_pointer = p;
			     goto ok;
			case OPTARG: 
			     if (*p)
				  my_optarg = p;
			     goto ok;
			case REQARG: 
			     if (*p) {
				  my_optarg = p;
			     } else {
				  if (my_optind >= argc) {
				       fprintf(stderr, 
					  "option -%c requires an argument\n",
					  l->short_name);
				       return '?';
				  }
				  my_optarg = argv[my_optind];
				  ++my_optind;
			     }
			     goto ok;
		    }
	       }
	  }
     }

     fprintf(stderr, "unrecognized option %s\n", argv[my_optind - 1]);
     return '?';

 ok:
     return l->short_name;
}