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/*
 *
 *
 * Copyright 2017 Symphony Communication Services, LLC.
 *
 * Licensed to The Symphony Software Foundation (SSF) under one
 * or more contributor license agreements.  See the NOTICE file
 * distributed with this work for additional information
 * regarding copyright ownership.  The SSF 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.symphonyoss.s2.common.dom.json;

import javax.annotation.Nonnull;
import javax.annotation.concurrent.Immutable;

import org.symphonyoss.s2.common.type.provider.IStringProvider;

@Immutable
public class JsonString extends JsonValue implements IStringProvider
{
  public JsonString(@Nonnull String value)
  {
    super(value, quote(value));
  }

  public static String quote(String value)
  {
    if(value == null)
      return "null";
    
    StringBuilder b = new StringBuilder();
    
    b.append('"');
    for(char c : value.toCharArray())
    {
      switch(c)
      {
        case '\\':  b.append("\\\\");   break;
        case '\"':  b.append("\\\"");   break;
        case '\n':  b.append("\\n");   break;
        case '\r':  b.append("\\r");   break;
        case '\t':  b.append("\\t");   break;
        case '\f':  b.append("\\f");   break;
        case '\b':  b.append("\\b");   break;
          
        default:
          if(c < ' ')
            b.append(String.format("\\%04x", (int) c));
          else
            b.append(c);
      }
    }
    b.append('"');
    
    return b.toString();
  }

  @Override
  public @Nonnull String asString()
  {
    return getValue();
  }
}