EscapedStringJsonBuilder.java

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/*
 * Copyright 2022 HEAVY.AI, Inc.
 *
 * Licensed 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.calcite.util;

import org.apache.calcite.util.JsonBuilder;
import org.apache.commons.text.StringEscapeUtils;

import java.util.List;
import java.util.Map;

public class EscapedStringJsonBuilder extends JsonBuilder {
  @Override
  public void append(StringBuilder buf, int indent, Object o) {
    if (o instanceof String) {
      buf.append('"').append(StringEscapeUtils.escapeJson((String) o)).append('"');
    } else if ((o == null) || (o instanceof Map) || (o instanceof List)
            || (o instanceof Number) || (o instanceof Boolean)) {
      super.append(buf, indent, o);
    } else {
      buf.append(o);
    }
  }
}