getopt_W32.cpp

// must be first: 
//#include <precompiled.h>

/*
* Copyright (c) 1987, 1993, 1994
*   The Regents of the University of California.  All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
*    notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
*    notice, this list of conditions and the following disclaimer in the
*    documentation and/or other materials provided with the distribution.
* 3. All advertising materials mentioning features or use of this software
*    must display the following acknowledgement:
*   This product includes software developed by the University of
*   California, Berkeley and its contributors.
* 4. Neither the name of the University nor the names of its contributors
*    may be used to endorse or promote products derived from this software
*    without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
* SUCH DAMAGE.
*/

//#include <bias_config.h>

#include "getopt_W32.h"
#include <stdio.h>
#include <stdlib.h>
#include <string.h>

// DLL (JW)

BIASCommon_EXPORT int   opterr = 1;     /* if error message should be printed */
BIASCommon_EXPORT int   optind = 1;     /* index into parent argv vector */
BIASCommon_EXPORT int   optopt;         /* character checked for validity */
BIASCommon_EXPORT int   optreset;       /* reset getopt */
BIASCommon_EXPORT char * optarg; /* argument associated with option */

#define BADCH   (int)'?'
#define BADARG  (int)':'
#define EMSG    ""

/*
* getopt --
*   Parse argc/argv argument vector.
*/
int
getopt(int nargc,
       char * const *nargv,
       const char *ostr )
{
  static char *place = EMSG;        /* option letter processing */
  char *oli;                /* option letter list index */

  if (optreset || !*place) {        /* update scanning pointer */
    optreset = 0;
    if (optind >= nargc || *(place = nargv[optind]) != '-') {
      place = EMSG;
      return (-1);
    }
    if (place[1] && *++place == '-') {  /* found "--" */
      ++optind;
      place = EMSG;
      return (-1);
    }
  }
  /* option letter okay? */
  optopt = (int)*place;
  place++;
  oli = (char*)strchr(ostr, optopt);
  if (optopt == (int)':' ||
    !oli ) 
  {
    /*
    * if the user didn't specify '-' as an option,
    * assume it means -1.
    */
    if (optopt == (int)'-')
      return (-1);
    if (!*place)
      ++optind;
    if (opterr && *ostr != ':' && optopt != BADCH)
      (void)fprintf(stderr, "%s: illegal option -- %c\n",
      "progname", optopt);
    return (BADCH);
  }
  if (*++oli != ':') {          /* don't need argument */
    optarg = NULL;
    if (!*place)
      ++optind;
  }
  else {                    /* need an argument */
    if (*place)         /* no white space */
      optarg = place;
    else if (nargc <= ++optind) {   /* no arg */
      place = EMSG;
      if (*ostr == ':')
        return (BADARG);
      if (opterr)
        (void)fprintf(stderr,
        "%s: option requires an argument -- %c\n",
        "progname", optopt);
      return (BADCH);
    }
    else                /* white space */
      optarg = nargv[optind];
    place = EMSG;
    ++optind;
  }
  return (optopt);          /* dump back option letter */
}