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/*---------------------------------------------------------------------------*
* <RCS keywords>
*
* C++ Library
*
* Copyright 1992-1994, David Gottner
*
* All Rights Reserved
*
* Permission to use, copy, modify, and distribute this software and its
* documentation for any purpose and without fee is hereby granted,
* provided that the above copyright notice, this permission notice and
* the following disclaimer notice appear unmodified in all copies.
*
* I DISCLAIM ALL WARRANTIES WITH REGARD TO THIS SOFTWARE, INCLUDING ALL
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL I
* BE LIABLE FOR ANY SPECIAL, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY
* DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE, DATA, OR PROFITS, WHETHER
* IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT
* OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
*
* Nevertheless, I would like to know about bugs in this library or
* suggestions for improvment. Send bug reports and feedback to
* davegottner@delphi.com.
*---------------------------------------------------------------------------*/
#include <stdio.h>
#include <string.h>
#define bool int
#define TRUE 1
#define FALSE 0
bool opterr = TRUE; /* generate error messages */
int optind = 1; /* index into argv array */
char * optarg = NULL; /* optional argument */
int getopt(int argc, char *argv[], const char optstring[])
{
static char *opt_ptr = "";
register char *ptr;
int option;
if (*opt_ptr == '\0') {
if (optind >= argc || argv[optind][0] != '-')
return -1;
else if (strcmp(argv[optind], "--") == 0) {
++optind;
return -1;
}
opt_ptr = &argv[optind++][1];
}
if ((ptr = strchr(optstring, option = *opt_ptr++)) == NULL) {
if (opterr)
fprintf(stderr, "Unknown option: -%c\n", option);
return '?';
}
if (*(ptr + 1) == ':') {
if (*opt_ptr != '\0') {
optarg = opt_ptr;
opt_ptr = "";
}
else {
if (optind >= argc) {
if (opterr)
fprintf(stderr,
"Argument expected for the -%c option\n", option);
return '?';
}
optarg = argv[optind++];
}
}
return option;
}
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