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33 * $DragonFly: src/lib/libc/stdlib/getsubopt.c,v 1.3 2003/09/06 08:10:46 asmodai Exp $
35 * @(#)getsubopt.c 8.1 (Berkeley) 6/4/93
42 * The SVID interface to getsubopt provides no way of figuring out which
43 * part of the suboptions list wasn't matched. This makes error messages
44 * tricky... The extern variable suboptarg is a pointer to the token
50 getsubopt(optionp, tokens, valuep)
51 char **optionp, **valuep;
57 suboptarg = *valuep = NULL;
59 if (!optionp || !*optionp)
62 /* skip leading white-space, commas */
63 for (p = *optionp; *p && (*p == ',' || *p == ' ' || *p == '\t'); ++p);
70 /* save the start of the token, and skip the rest of the token. */
72 *++p && *p != ',' && *p != '=' && *p != ' ' && *p != '\t';);
76 * If there's an equals sign, set the value pointer, and
77 * skip over the value part of the token. Terminate the
83 *p && *p != ',' && *p != ' ' && *p != '\t'; ++p);
88 /* Skip any whitespace or commas after this token. */
89 for (; *p && (*p == ',' || *p == ' ' || *p == '\t'); ++p);
92 /* set optionp for next round. */
95 for (cnt = 0; *tokens; ++tokens, ++cnt)
96 if (!strcmp(suboptarg, *tokens))