+static void
+FcParseCharSet (FcConfigParse *parse)
+{
+ FcVStack *vstack;
+ FcCharSet *charset = FcCharSetCreate ();
+ FcChar32 i;
+ int n = 0;
+
+ while ((vstack = FcVStackPeek (parse)))
+ {
+ switch (vstack->tag) {
+ case FcVStackInteger:
+ if (!FcCharSetAddChar (charset, vstack->u.integer))
+ {
+ FcConfigMessage (parse, FcSevereWarning, "invalid character: 0x%04x", vstack->u.integer);
+ }
+ else
+ n++;
+ break;
+ case FcVStackRange:
+ for (i = vstack->u.range.begin; i <= vstack->u.range.end; i++)
+ {
+ if (!FcCharSetAddChar (charset, i))
+ {
+ FcConfigMessage (parse, FcSevereWarning, "invalid character: 0x%04x", i);
+ }
+ else
+ n++;
+ }
+ break;
+ default:
+ FcConfigMessage (parse, FcSevereError, "invalid element in charset");
+ break;
+ }
+ FcVStackPopAndDestroy (parse);
+ }
+ if (n > 0)
+ FcVStackPushCharSet (parse, charset);
+ else
+ FcCharSetDestroy (charset);
+}
+