mirror of
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76 lines
1.8 KiB
C
76 lines
1.8 KiB
C
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/*
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* POSIX getopt for Windows
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*
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* AT&T Public License
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*
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* Code given out at the 1985 UNIFORUM conference in Dallas.
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*/
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#include "wingetopt.h"
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#include <stdio.h>
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#include <string.h>
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#ifndef NULL
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#define NULL 0
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#endif
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#ifndef EOF
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#define EOF (-1)
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#endif
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#define ERR(s, c) \
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if (opterr) { \
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char errbuf[2]; \
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errbuf[0] = (char)c; \
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errbuf[1] = '\n'; \
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fputs(argv[0], stderr); \
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fputs(s, stderr); \
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fputc(c, stderr); \
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}
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int opterr = 1;
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int optind = 1;
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int optopt;
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char *optarg;
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int getopt(int argc, char *const argv[], const char *opts) {
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static int sp = 1;
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int c;
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char *cp;
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if (sp == 1)
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if (optind >= argc || argv[optind][0] != '-' || argv[optind][1] == '\0')
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return EOF;
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else if (strcmp(argv[optind], "--") == 0) {
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optind++;
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return EOF;
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}
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optopt = c = argv[optind][sp];
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if (c == ':' || (cp = strchr(opts, c)) == NULL) {
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ERR(": illegal option -- ", c);
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if (argv[optind][++sp] == '\0') {
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optind++;
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sp = 1;
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}
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return '?';
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}
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if (*++cp == ':') {
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if (argv[optind][sp + 1] != '\0')
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optarg = &argv[optind++][sp + 1];
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else if (++optind >= argc) {
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ERR(": option requires an argument -- ", c);
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sp = 1;
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return '?';
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} else
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optarg = argv[optind++];
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sp = 1;
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} else {
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if (argv[optind][++sp] == '\0') {
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sp = 1;
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optind++;
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}
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optarg = NULL;
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}
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return c;
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}
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