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- #include <string.h>
-
- /*LINTLIBRARY*/
- #ifndef NULL
- #define NULL 0
- #endif
- #ifndef EOF
- #define EOF (-1)
- #endif
- #define ERR(s, c) if(opterr){\
- char errbuf[3];\
- errbuf[0] = c; errbuf[1] = '\r'; errbuf[2] = '\n';\
- (void) write(2, argv[0], (unsigned)strlen(argv[0]));\
- (void) write(2, s, (unsigned)strlen(s));\
- (void) write(2, errbuf, 3);}
-
- extern int strcmp();
- extern char *strchr();
-
- 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=strchr(opts, c)) == NULL) {
- ERR(": illegal option -- ", c);
- if(argv[Optind][++sp] == '\0') {
- Optind++;
- sp = 1;
- }
- return('\0');
- }
- 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('\0');
- } else
- optarg = argv[Optind++];
- sp = 1;
- } else {
- if(argv[Optind][++sp] == '\0') {
- sp = 1;
- Optind++;
- }
- optarg = NULL;
- }
- return(c);
- }
-
-