Function maxArgWidth

popt/popthelp.c:488–532

* Find display width for longest argument string. * @param opt option(s) * @param translation_domain translation domain * @return display width */

 * @return		display width
 */
static size_t maxArgWidth(const struct poptOption * opt,
		       const char * translation_domain)
{
    size_t max = 0;
    size_t len = 0;
    const char * argDescrip;
    
    if (opt != NULL)
    while (opt->longName || opt->shortName || opt->arg) {
	if (poptArgType(opt) == POPT_ARG_INCLUDE_TABLE) {
	    void * arg = opt->arg;
	    /* XXX sick hack to preserve pretense of ABI. */
	    if (arg == poptHelpOptions)
		arg = poptHelpOptionsI18N;
	    if (arg)	/* XXX program error */
		len = maxArgWidth(arg, translation_domain);
	    if (len > max) max = len;
	} else if (!F_ISSET(opt, DOC_HIDDEN)) {
	    len = sizeof("  ")-1;
	    /* XXX --long always padded for alignment with/without "-X, ". */
	    len += sizeof("-X, ")-1;
	    if (opt->longName) {
		len += (F_ISSET(opt, ONEDASH) ? sizeof("-") : sizeof("--")) - 1;
		len += strlen(opt->longName);
	    }

	    argDescrip = getArgDescrip(opt, translation_domain);

	    if (argDescrip) {

		/* XXX argDescrip[0] determines "--foo=bar" or "--foo bar". */
		if (!strchr(" =(", argDescrip[0])) len += sizeof("=")-1;

		/* Adjust for (possible) wide characters. */
		len += stringDisplayWidth(argDescrip);
	    }

	    if (F_ISSET(opt, OPTIONAL)) len += sizeof("[]")-1;
	    if (len > max) max = len;
	}
	opt++;
    }
    
    return max;
}

/**
 * Display popt alias and exec help.