--------------------------------------------------------------------------- ^FUNCTION: Options::match_longopt - match a long-option ^SYNOPSIS: const char * Options::match_longopt(opt, len, ambiguous) ^PARAMETERS: char * opt -- the long-option to match int len -- the number of character of "opt" to match int & ambiguous -- set by this routine before returning. ^DESCRIPTION: Try to match "opt" ag
| 754 | // if we had exactly 1 partial match return it, else return NULL |
| 755 | // ^^------------------------------------------------------------------------- |
| 756 | const char *Options::match_longopt(const char *opt, int len, int &ambiguous) const |
| 757 | { |
| 758 | kwdmatch_t result; |
| 759 | const char *matched = NULLSTR; |
| 760 | |
| 761 | ambiguous = 0; |
| 762 | if ((optvec == NULL) || (!*optvec)) |
| 763 | return NULLSTR; |
| 764 | |
| 765 | for (const char *const *optv = optvec; *optv; optv++) |
| 766 | { |
| 767 | OptionSpec optspec = *optv; |
| 768 | const char *longopt = optspec.LongOpt(); |
| 769 | if (longopt == NULL) |
| 770 | continue; |
| 771 | result = kwdmatch(longopt, opt, len); |
| 772 | if (result == kwdmatch_t::EXACT_MATCH) |
| 773 | { |
| 774 | return optspec; |
| 775 | } |
| 776 | else if (result == kwdmatch_t::PARTIAL_MATCH) |
| 777 | { |
| 778 | if (matched) |
| 779 | { |
| 780 | ++ambiguous; |
| 781 | return NULLSTR; |
| 782 | } |
| 783 | else |
| 784 | { |
| 785 | matched = optspec; |
| 786 | } |
| 787 | } |
| 788 | } // for |
| 789 | |
| 790 | return matched; |
| 791 | } |
| 792 | |
| 793 | // --------------------------------------------------------------------------- |
| 794 | // ^FUNCTION: Options::parse_opt - parse an option |