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vlmcsd/wingetopt.c

76 lines
1.5 KiB
C

/*
POSIX getopt for Windows
AT&T Public License
Code given out at the 1985 UNIFORUM conference in Dallas.
*/
#ifdef _MSC_VER
#include "wingetopt.h"
#include <stdio.h>
#include <string.h>
#define EOF (-1)
#define ERR(s, c) if(opterr){\
char errbuf[2];\
errbuf[0] = c; errbuf[1] = '\n';\
fputs(argv[0], stderr);\
fputs(s, stderr);\
fputc(c, stderr);}
//(void) write(2, argv[0], (unsigned)strlen(argv[0]));\
//(void) write(2, s, (unsigned)strlen(s));\
//(void) write(2, errbuf, 2);}
int opterr = 1;
int optind = 1;
int optopt;
char *optarg;
int getopt(int argc, char * const argv[], const char *opts)
{
static int sp = 1;
register int c;
register char *cp;
if (sp == 1)
if (optind >= argc ||
argv[optind][0] != '-' || argv[optind][1] == '\0')
return(EOF);
else if (strcmp(argv[optind], "--") == 0) {
optind++;
return(EOF);
}
optopt = c = argv[optind][sp];
if (c == ':' || (cp = strchr(opts, c)) == NULL) {
ERR(": illegal option -- ", (char)c);
if (argv[optind][++sp] == '\0') {
optind++;
sp = 1;
}
return('?');
}
if (*++cp == ':') {
if (argv[optind][sp + 1] != '\0')
optarg = (char*)&argv[optind++][sp + 1];
else if (++optind >= argc) {
ERR(": option requires an argument -- ", (char)c);
sp = 1;
return('?');
}
else
optarg = (char*)argv[optind++];
sp = 1;
}
else {
if (argv[optind][++sp] == '\0') {
sp = 1;
optind++;
}
optarg = NULL;
}
return(c);
}
#endif /* __GNUC__ */