reactos/rosapps/applications/sysutils/mkdosfs/getopt.c
Hermès Bélusca-Maïto 66a44527fd Remove the unneeded $Id$ blabla from the source code.
svn path=/trunk/; revision=58493
2013-03-14 01:14:18 +00:00

63 lines
1.3 KiB
C

/*
* This is an unpublished work copyright (c) 1998 HELIOS Software GmbH
* 30827 Garbsen, Germany
*/
#include <stdio.h>
#include <string.h>
#ifdef HAS_UNISTD
# include <unistd.h>
#endif
char *optarg;
int optind = 1;
int opterr = 1;
int optopt;
static int subopt;
static int suboptind = 1;
int getopt(int argc, char *const argv[], const char * optstring)
{
char *curopt;
char *p;
int cursubopt;
if (suboptind == optind-1 && argv[suboptind][subopt] != '\0') {
curopt = (char *)argv[suboptind];
} else {
curopt = (char *)argv[optind];
if (curopt == NULL || curopt[0] != '-' || strcmp(curopt, "-") == 0)
return -1;
suboptind = optind;
subopt = 1;
optind++;
if (strcmp(curopt, "--") == 0)
return -1;
}
cursubopt = subopt++;
if ((p = strchr(optstring, curopt[cursubopt])) == NULL) {
optopt = curopt[cursubopt];
if (opterr)
fprintf(stderr, "%s: illegal option -- %c\n", argv[0], optopt);
return '?';
}
if (p[1] == ':') {
if (curopt[cursubopt+1] != '\0') {
optarg = curopt+cursubopt+1;
suboptind++;
return p[0];
}
if (argv[optind] == NULL) {
optopt = p[0];
if (opterr)
fprintf(stderr, "%s: option requires an argument -- %c\n", argv[0], optopt);
if (*optstring == ':')
return ':';
return '?';
}
optarg = argv[optind++];
}
return p[0];
}