Function singleOptionDefaultValue

popt/popthelp.c:205–275

* Display default value for an option. * @param lineLength display positions remaining * @param opt option(s) * @param translation_domain translation domain * @return */

 * @return
 */
static char *
singleOptionDefaultValue(size_t lineLength,
		const struct poptOption * opt,
		/* FIX: i18n macros disabled with lclint */
		const char * translation_domain)
{
    const char * defstr = D_(translation_domain, "default");
    char * le = malloc(4*lineLength + 1);
    char * l = le;

    if (le == NULL) return NULL;	/* XXX can't happen */
    *le = '\0';
    *le++ = '(';
    le = stpcpy(le, defstr);
    *le++ = ':';
    *le++ = ' ';
  if (opt->arg) {	/* XXX programmer error */
    poptArg arg = { .ptr = opt->arg };
    switch (poptArgType(opt)) {
    case POPT_ARG_VAL:
    case POPT_ARG_INT:
	le += sprintf(le, "%d", arg.intp[0]);
	break;
    case POPT_ARG_SHORT:
	le += sprintf(le, "%hd", arg.shortp[0]);
	break;
    case POPT_ARG_LONG:
	le += sprintf(le, "%ld", arg.longp[0]);
	break;
    case POPT_ARG_LONGLONG:
	le += sprintf(le, "%lld", arg.longlongp[0]);
	break;
    case POPT_ARG_FLOAT:
    {	double aDouble = (double) arg.floatp[0];
	le += sprintf(le, "%g", aDouble);
    }	break;
    case POPT_ARG_DOUBLE:
	le += sprintf(le, "%g", arg.doublep[0]);
	break;
    case POPT_ARG_MAINCALL:
	le += sprintf(le, "%p", opt->arg);
	break;
    case POPT_ARG_ARGV:
	le += sprintf(le, "%p", opt->arg);
	break;
    case POPT_ARG_STRING:
    {	const char * s = arg.argv[0];
	if (s == NULL)
	    le = stpcpy(le, "null");
	else {
	    size_t limit = 4*lineLength - (le - l) - sizeof("\"\")");
	    size_t slen;
	    *le++ = '"';
	    strncpy(le, s, limit); le[limit] = '\0'; le += (slen = strlen(le));
	    if (slen == limit && s[limit])
		le[-1] = le[-2] = le[-3] = '.';
	    *le++ = '"';
	}