Category : UNIX Files
Archive   : WP.ZIP
Filename : GETOPT.C

 
Output of file : GETOPT.C contained in archive : WP.ZIP
/*LINTLIBRARY*/

#ifdef BSD
/* fix differences in string routine names */
#define strchr index
#endif

#include
#define ERR(s, c) if(opterr){\
fputs(argv[0], stderr);\
fputs(s, stderr);\
fputc(c, stderr);\
fputc('\n', stderr);}

int opterr = 1;
int optind = 1;
int optopt;
char *optarg;
char *strchr();


int
getopt (argc, argv, opts)
char **argv, *opts;
{
static int sp = 1;
register 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 '?';
}
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;
}


  3 Responses to “Category : UNIX Files
Archive   : WP.ZIP
Filename : GETOPT.C

  1. Very nice! Thank you for this wonderful archive. I wonder why I found it only now. Long live the BBS file archives!

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