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EscapedStringJsonBuilder.java
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1 /*
2  * Copyright 2022 HEAVY.AI, Inc.
3  *
4  * Licensed under the Apache License, Version 2.0 (the "License");
5  * you may not use this file except in compliance with the License.
6  * You may obtain a copy of the License at
7  *
8  * http://www.apache.org/licenses/LICENSE-2.0
9  *
10  * Unless required by applicable law or agreed to in writing, software
11  * distributed under the License is distributed on an "AS IS" BASIS,
12  * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
13  * See the License for the specific language governing permissions and
14  * limitations under the License.
15  */
16 
17 package org.apache.calcite.util;
18 
19 import org.apache.calcite.util.JsonBuilder;
20 import org.apache.commons.text.StringEscapeUtils;
21 
22 import java.util.List;
23 import java.util.Map;
24 
25 public class EscapedStringJsonBuilder extends JsonBuilder {
26  @Override
27  public void append(StringBuilder buf, int indent, Object o) {
28  if (o instanceof String) {
29  buf.append('"').append(StringEscapeUtils.escapeJson((String) o)).append('"');
30  } else if ((o == null) || (o instanceof Map) || (o instanceof List)
31  || (o instanceof Number) || (o instanceof Boolean)) {
32  super.append(buf, indent, o);
33  } else {
34  buf.append(o);
35  }
36  }
37 }
void append(StringBuilder buf, int indent, Object o)