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- #ifndef GETOPT
-
- #include <stdio.h>
- #include <string.h>
-
- #define index(s,c) strchr(s,c)
- #define ERR(s, c) if(opterr){\
- char errbuf[2];\
- errbuf[0] = c; errbuf[1] = '\n';\
- (void) fwrite(argv[0], (unsigned)strlen(argv[0]),1,stderr);\
- (void) fwrite(s, (unsigned)strlen(s),1,stderr);\
- (void) fwrite(errbuf, 2,1,stderr);}
-
- int opterr = 1;
- int optind = 1;
- int optopt;
- char *optarg;
-
- int getopt(int argc, char *argv[], 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], "--") == NULL) {
- optind++;
- return(EOF);
- }
- optopt = c = argv[optind][sp];
- if(c == ':' || (cp=index(opts, c)) == NULL) {
- ERR(": illegal option -- ", c);
- if(argv[optind][++sp] == '\0') {
- optind++;
- sp = 1;
- }
- return('?');
- }
- if(*++cp == ':') {
- if(argv[optind][sp+1] != '\0')
- optarg = &argv[optind++][sp+1];
- else if(++optind >= argc) {
- ERR(": option requires an argument -- ", c);
- sp = 1;
- return('?');
- } else
- optarg = argv[optind++];
- sp = 1;
- } else {
- if(argv[optind][++sp] == '\0') {
- sp = 1;
- optind++;
- }
- optarg = NULL;
- }
- return(c);
- }
-
- #endif
-