content: /*
   * 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.chemistry.opencmis.server.support.filter;
  
  /**
   * A super simple JSON pretty printer
   */
  public class JsonPrettyPrinter {
  
      private int indent = 0;
      private String indentStr;
      private StringBuilder sb = new StringBuilder(1024);
  
      public JsonPrettyPrinter() {
          init(3);
      }
  
      public JsonPrettyPrinter(int indent) {
          init(indent);
      }
  
      private void init(final int indent) {
          StringBuilder indentBuilder = new StringBuilder(indent);
          for (int i = 0; i < indent; i++) {
              indentBuilder.append(' ');
          }
          indentStr = indentBuilder.toString();
      }
  
      public String prettyPrint(final String jsonStr) {
          for (int i = 0; i < jsonStr.length(); i++) {
              char c = jsonStr.charAt(i);
              writeChar(c);
          }
          return sb.toString();
      }
  
      private void writeChar(char c) {
          if (c == '[' || c == '{') {
              sb.append(c);
              sb.append('\n');
              indent++;
              addIndent();
          } else if (c == ',') {
              sb.append(c);
              sb.append('\n');
              addIndent();
          } else if (c == ']' || c == '}') {
              sb.append('\n');
              indent--;
              addIndent();
              sb.append(c);
          } else {
              sb.append(c);
          }
      }
  
      private void addIndent() {
          for (int i = 0; i < indent; i++) {
              sb.append(indentStr);
          }
      }
  
  //    public static void main(String[] args) {
  //        args = new String[2];
  //        args[0] = "[0,{\"1\":{\"2\":{\"3\":{\"4\":[5,{\"6\":7}]}}}}]";
  //        args[1] = "{\"abc\":{\"def\":{\"ghi\":{\"jkl\":[5,{\"mno\":7}]}}}}";
  //        for (String s : args) {
  //            JsonPrettyPrinter pp = new JsonPrettyPrinter();
  //            System.out.println("Pretty Printing JSON String: " + s);
  //            String result = pp.prettyPrint(s);
  //            System.out.println("Pretty Printed JSON: " + result);
  //        }
  //    }
  }
  