7dca155e22
2004/03/17 12:40:59 waratah 1.1.92.1: #i1858# add explicit int type where needed include extra braces to make code more obvious for debugging
67 lines
1.4 KiB
C
67 lines
1.4 KiB
C
#include <stdio.h>
|
|
#include <string.h>
|
|
|
|
#define EPR fprintf(stderr,
|
|
#define ERR(str, chr) if(opterr) { EPR "%s%c\n", str, chr); }
|
|
|
|
int opterr = 1;
|
|
int optind = 1;
|
|
int optopt;
|
|
char *optarg;
|
|
|
|
int
|
|
getopt(int argc, char *const argv[], const 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 -1;
|
|
else
|
|
if (strcmp(argv[optind], "--") == 0)
|
|
{
|
|
optind++;
|
|
return -1;
|
|
}
|
|
}
|
|
optopt = c = argv[optind][sp];
|
|
if (c == ':' || (cp = strchr(opts, c)) == 0)
|
|
{
|
|
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 = 0;
|
|
}
|
|
return c;
|
|
}
|