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- /*LINTLIBRARY*/
-
- #include "configure.h"
-
- #ifdef THINK_C
- #define SYSV
- #endif
-
- #ifdef SYSV
- #define index strchr
- #endif
-
- #ifdef unix
- #define NULL 0
- #define EOF (-1)
- #define ERR(s, c) if(opterr){\
- extern int strlen(), write();\
- char errbuf[2];\
- errbuf[0] = c; errbuf[1] = '\n';\
- (void) write(2, argv[0], (int)strlen(argv[0]));\
- (void) write(2, s, (int)strlen(s));\
- (void) write(2, errbuf, 2);}
- #else
- /* Not unix -- assume <stdio.h> works, don't expect write(2). */
- #include <stdio.h>
- #define ERR(str, chr) if(opterr){\
- fprintf(stderr, "%s%s%c\n", argv[0], str, chr); }
- #endif
-
- extern int strcmp();
- extern char *index();
-
- 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], "--") == 0) {
- 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);
- }
-