blob: 66e8421c6f81211e20bf71070201a5d411cabb52 [file] [log] [blame]
/*
* Licensed to the Apache Software Foundation (ASF) under one or more
* contributor license agreements. See the NOTICE file distributed with
* this work for additional information regarding copyright ownership.
* The ASF licenses this file to You under the Apache License, Version 2.0
* (the "License"); you may not use this file except in compliance with
* the License. You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package org.apache.dubbo.qos.textui;
import java.util.LinkedList;
import java.util.List;
import static org.apache.dubbo.common.utils.StringUtils.repeat;
/**
* Ladder
*/
public class TLadder implements TComponent {
// separator
private static final String LADDER_CHAR = "`-";
// tab
private static final String STEP_CHAR = " ";
// indent length
private static final int INDENT_STEP = 2;
private final List<String> items = new LinkedList<>();
@Override
public String rendering() {
final StringBuilder ladderSB = new StringBuilder();
int deep = 0;
for (String item : items) {
// no separator is required for the first item
if (deep == 0) {
ladderSB.append(item).append(System.lineSeparator());
}
// need separator for others
else {
ladderSB.append(repeat(STEP_CHAR, deep * INDENT_STEP))
.append(LADDER_CHAR)
.append(item)
.append(System.lineSeparator());
}
deep++;
}
return ladderSB.toString();
}
/**
* add one item
*/
public TLadder addItem(String item) {
items.add(item);
return this;
}
}