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- /*
- ** Return options and their values from the command line.
- **
- ** This comes from the AT&T public-domain getopt published in mod.sources.
- */
- /* LINTLIBRARY */
- #include "shar.h"
- RCS("$Header: getopt.c,v 1.4 87/03/02 11:03:24 rs Exp $")
-
- #ifdef NEED_GETOPT
-
-
- #define TYPE int
-
- #define ERR(s, c) if(opterr){\
- char errbuf[2];\
- errbuf[0] = c; errbuf[1] = '\n';\
- (void) write(2, argv[0], (TYPE)strlen(argv[0]));\
- (void) write(2, s, (TYPE)strlen(s));\
- (void) write(2, errbuf, 2);}
-
- extern int strcmp();
-
- int opterr = 1;
- int optind = 1;
- int optopt;
- char *optarg;
-
- int
- getopt(argc, argv, opts)
- int argc;
- char **argv, *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++;
-
- }
- optopt = c = argv[optind][sp];
- if(c == ':' || (cp=IDX(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 /* NEED_GETOPT */
-