Crowbar.java 文件源码

/**
 * Parses an {@link Crowbar} from a given {@link ItemStack}.
 *
 * @param stack
 *            the stack to parse from
 * @return the {@link Crowbar} instance
 */
public static Optional<Crowbar> fromStack(ItemStack stack) {
    if (stack == null || !stack.hasItemMeta()) {
        return Optional.absent();
    }

    ItemMeta meta = stack.getItemMeta();
    if (!meta.hasDisplayName() || !meta.hasLore() || !meta.getDisplayName().equals(CROWBAR_NAME)) {
        return Optional.absent();
    }

    Crowbar crowbar = new Crowbar();
    List<String> loreList = meta.getLore();
    for (String lore : loreList) {
        lore = ChatColor.stripColor(lore);
        int length = lore.length();
        for (int i = 0; i < length; i++) {
            char character = lore.charAt(i);
            if (Character.isDigit(character)) {
                int amount = Integer.parseInt(String.valueOf(character));
                if (lore.startsWith(END_FRAME_USE_TAG)) {
                    crowbar.setEndFrameUses(amount);
                    break;
                } else if (lore.startsWith(SPAWNER_USE_TAG)) {
                    crowbar.setSpawnerUses(amount);
                    break;
                }
            }
        }
    }

    return Optional.of(crowbar);
}