content: /*
   * Copyright 2010-2025 Hyland Software, Inc. and its affiliates.
   *
   * 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.activiti.engine.impl.util.json;
  
  /*
   Copyright (c) 2008 JSON.org
  
   Permission is hereby granted, free of charge, to any person obtaining a copy
   of this software and associated documentation files (the "Software"), to deal
   in the Software without restriction, including without limitation the rights
   to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
   copies of the Software, and to permit persons to whom the Software is
   furnished to do so, subject to the following conditions:
  
   The above copyright notice and this permission notice shall be included in all
   copies or substantial portions of the Software.
  
   The Software shall be used for Good, not Evil.
  
   THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
   IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
   FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
   AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
   LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
   OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
   SOFTWARE.
   */
  
  import java.util.Iterator;
  
  /**
   * This provides static methods to convert an XML text into a JSONArray or JSONObject, and to covert a JSONArray or JSONObject into an XML text using the JsonML transform.
   *
  
   * @version 2010-02-12
   */
  public class JSONML {
  
      /**
       * Parse XML values and store them in a JSONArray.
       *
       * @param x
       *          The XMLTokener containing the source string.
       * @param arrayForm
       *          true if array form, false if object form.
       * @param ja
       *          The JSONArray that is containing the current tag or null if we are at the outermost level.
       * @return A JSONArray if the value is the outermost tag, otherwise null.
       * @throws JSONException
       */
      private static Object parse(XMLTokener x, boolean arrayForm, JSONArray ja) throws JSONException {
          String attribute;
          char c;
          String closeTag = null;
          int i;
          JSONArray newja = null;
          JSONObject newjo = null;
          Object token;
          String tagName = null;
  
          // Test for and skip past these forms:
          // <!-- ... -->
          // <![ ... ]]>
          // <! ... >
          // <? ... ?>
  
          while (true) {
              token = x.nextContent();
              if (token == XML.LT) {
                  token = x.nextToken();
                  if (token instanceof Character) {
                      if (token == XML.SLASH) {
                          // Close tag </
  
                          token = x.nextToken();
                          if (!(token instanceof String)) {
                              throw new JSONException("Expected a closing name instead of '" + token + "'.");
                          }
                          if (x.nextToken() != XML.GT) {
                              throw x.syntaxError("Misshaped close tag");
                          }
                          return token;
                      } else if (token == XML.BANG) {
                          // <!
  
                          c = x.next();
                          if (c == '-') {
                              if (x.next() == '-') {
                                  x.skipPast("-->");
                              }
                              x.back();
                          } else if (c == '[') {
                              token = x.nextToken();
                              if (token.equals("CDATA") && x.next() == '[') {
                                  if (ja != null) {
                                      ja.put(x.nextCDATA());
                                  }
                              } else {
                                  throw x.syntaxError("Expected 'CDATA['");
                              }
                          } else {
                              i = 1;
                              do {
                                  token = x.nextMeta();
                                  if (token == null) {
                                      throw x.syntaxError("Missing '>' after '<!'.");
                                  } else if (token == XML.LT) {
                                      i += 1;
                                  } else if (token == XML.GT) {
                                      i -= 1;
                                  }
                              } while (i > 0);
                          }
                      } else if (token == XML.QUEST) {
                          // <?
  
                          x.skipPast("?>");
                      } else {
                          throw x.syntaxError("Misshaped tag");
                      }
  
                      // Open tag <
                  } else {
                      if (!(token instanceof String)) {
                          throw x.syntaxError("Bad tagName '" + token + "'.");
                      }
                      tagName = (String) token;
                      newja = new JSONArray();
                      newjo = new JSONObject();
                      if (arrayForm) {
                          newja.put(tagName);
                          if (ja != null) {
                              ja.put(newja);
                          }
                      } else {
                          newjo.put("tagName", tagName);
                          if (ja != null) {
                              ja.put(newjo);
                          }
                      }
                      token = null;
                      for (;;) {
                          if (token == null) {
                              token = x.nextToken();
                          }
                          if (token == null) {
                              throw x.syntaxError("Misshaped tag");
                          }
                          if (!(token instanceof String)) {
                              break;
                          }
  
                          // attribute = value
  
                          attribute = (String) token;
                          if (!arrayForm && ("tagName".equals(attribute) || "childNode".equals(attribute))) {
                              throw x.syntaxError("Reserved attribute.");
                          }
                          token = x.nextToken();
                          if (token == XML.EQ) {
                              token = x.nextToken();
                              if (!(token instanceof String)) {
                                  throw x.syntaxError("Missing value");
                              }
                              newjo.accumulate(attribute, JSONObject.stringToValue((String) token));
                              token = null;
                          } else {
                              newjo.accumulate(attribute, "");
                          }
                      }
                      if (arrayForm && newjo.length() > 0) {
                          newja.put(newjo);
                      }
  
                      // Empty tag <.../>
  
                      if (token == XML.SLASH) {
                          if (x.nextToken() != XML.GT) {
                              throw x.syntaxError("Misshaped tag");
                          }
                          if (ja == null) {
                              if (arrayForm) {
                                  return newja;
                              } else {
                                  return newjo;
                              }
                          }
  
                          // Content, between <...> and </...>
                      } else {
                          if (token != XML.GT) {
                              throw x.syntaxError("Misshaped tag");
                          }
                          closeTag = (String) parse(x, arrayForm, newja);
                          if (closeTag != null) {
                              if (!closeTag.equals(tagName)) {
                                  throw x.syntaxError("Mismatched '" + tagName + "' and '" + closeTag + "'");
                              }
                              tagName = null;
                              if (!arrayForm && newja.length() > 0) {
                                  newjo.put("childNodes", newja);
                              }
                              if (ja == null) {
                                  if (arrayForm) {
                                      return newja;
                                  } else {
                                      return newjo;
                                  }
                              }
                          }
                      }
                  }
              } else {
                  if (ja != null) {
                      ja.put(token instanceof String ? JSONObject.stringToValue((String) token) : token);
                  }
              }
          }
      }
  
      /**
       * Convert a well-formed (but not necessarily valid) XML string into a JSONArray using the JsonML transform. Each XML tag is represented as a JSONArray in which the first element is the tag name. If
       * the tag has attributes, then the second element will be JSONObject containing the name/value pairs. If the tag contains children, then strings and JSONArrays will represent the child tags.
       * Comments, prologs, DTDs, and <code>&lt;[ [ ]]></code> are ignored.
       *
       * @param string
       *          The source string.
       * @return A JSONArray containing the structured signalData from the XML string.
       * @throws JSONException
       */
      public static JSONArray toJSONArray(String string) throws JSONException {
          return toJSONArray(new XMLTokener(string));
      }
  
      /**
       * Convert a well-formed (but not necessarily valid) XML string into a JSONArray using the JsonML transform. Each XML tag is represented as a JSONArray in which the first element is the tag name. If
       * the tag has attributes, then the second element will be JSONObject containing the name/value pairs. If the tag contains children, then strings and JSONArrays will represent the child content and
       * tags. Comments, prologs, DTDs, and <code>&lt;[ [ ]]></code> are ignored.
       *
       * @param x
       *          An XMLTokener.
       * @return A JSONArray containing the structured signalData from the XML string.
       * @throws JSONException
       */
      public static JSONArray toJSONArray(XMLTokener x) throws JSONException {
          return (JSONArray) parse(x, true, null);
      }
  
      /**
       * Convert a well-formed (but not necessarily valid) XML string into a JSONObject using the JsonML transform. Each XML tag is represented as a JSONObject with a "tagName" property. If the tag has
       * attributes, then the attributes will be in the JSONObject as properties. If the tag contains children, the object will have a "childNodes" property which will be an array of strings and JsonML
       * JSONObjects.
       *
       * Comments, prologs, DTDs, and <code>&lt;[ [ ]]></code> are ignored.
       *
       * @param x
       *          An XMLTokener of the XML source text.
       * @return A JSONObject containing the structured signalData from the XML string.
       * @throws JSONException
       */
      public static JSONObject toJSONObject(XMLTokener x) throws JSONException {
          return (JSONObject) parse(x, false, null);
      }
  
      /**
       * Convert a well-formed (but not necessarily valid) XML string into a JSONObject using the JsonML transform. Each XML tag is represented as a JSONObject with a "tagName" property. If the tag has
       * attributes, then the attributes will be in the JSONObject as properties. If the tag contains children, the object will have a "childNodes" property which will be an array of strings and JsonML
       * JSONObjects.
       *
       * Comments, prologs, DTDs, and <code>&lt;[ [ ]]></code> are ignored.
       *
       * @param string
       *          The XML source text.
       * @return A JSONObject containing the structured signalData from the XML string.
       * @throws JSONException
       */
      public static JSONObject toJSONObject(String string) throws JSONException {
          return toJSONObject(new XMLTokener(string));
      }
  
      /**
       * Reverse the JSONML transformation, making an XML text from a JSONArray.
       *
       * @param ja
       *          A JSONArray.
       * @return An XML string.
       * @throws JSONException
       */
      public static String toString(JSONArray ja) throws JSONException {
          Object e;
          int i;
          JSONObject jo;
          String k;
          Iterator keys;
          int length;
          StringBuilder sb = new StringBuilder();
          String tagName;
          String v;
  
          // Emit <tagName
  
          tagName = ja.getString(0);
          XML.noSpace(tagName);
          tagName = XML.escape(tagName);
          sb.append('<');
          sb.append(tagName);
  
          e = ja.opt(1);
          if (e instanceof JSONObject) {
              i = 2;
              jo = (JSONObject) e;
  
              // Emit the attributes
  
              keys = jo.keys();
              while (keys.hasNext()) {
                  k = keys.next().toString();
                  XML.noSpace(k);
                  v = jo.optString(k);
                  if (v != null) {
                      sb.append(' ');
                      sb.append(XML.escape(k));
                      sb.append('=');
                      sb.append('"');
                      sb.append(XML.escape(v));
                      sb.append('"');
                  }
              }
          } else {
              i = 1;
          }
  
          // Emit content in body
  
          length = ja.length();
          if (i >= length) {
              sb.append('/');
              sb.append('>');
          } else {
              sb.append('>');
              do {
                  e = ja.get(i);
                  i += 1;
                  if (e != null) {
                      if (e instanceof String) {
                          sb.append(XML.escape(e.toString()));
                      } else if (e instanceof JSONObject) {
                          sb.append(toString((JSONObject) e));
                      } else if (e instanceof JSONArray) {
                          sb.append(toString((JSONArray) e));
                      }
                  }
              } while (i < length);
              sb.append('<');
              sb.append('/');
              sb.append(tagName);
              sb.append('>');
          }
          return sb.toString();
      }
  
      /**
       * Reverse the JSONML transformation, making an XML text from a JSONObject. The JSONObject must contain a "tagName" property. If it has children, then it must have a "childNodes" property containing
       * an array of objects. The other properties are attributes with string values.
       *
       * @param jo
       *          A JSONObject.
       * @return An XML string.
       * @throws JSONException
       */
      @SuppressWarnings("unchecked")
      public static String toString(JSONObject jo) throws JSONException {
          StringBuilder sb = new StringBuilder();
          Object e;
          int i;
          JSONArray ja;
          String k;
          Iterator keys;
          int len;
          String tagName;
          String v;
  
          // Emit <tagName
  
          tagName = jo.optString("tagName");
          if (tagName == null) {
              return XML.escape(jo.toString());
          }
          XML.noSpace(tagName);
          tagName = XML.escape(tagName);
          sb.append('<');
          sb.append(tagName);
  
          // Emit the attributes
  
          keys = jo.keys();
          while (keys.hasNext()) {
              k = keys.next().toString();
              if (!k.equals("tagName") && !k.equals("childNodes")) {
                  XML.noSpace(k);
                  v = jo.optString(k);
                  if (v != null) {
                      sb.append(' ');
                      sb.append(XML.escape(k));
                      sb.append('=');
                      sb.append('"');
                      sb.append(XML.escape(v));
                      sb.append('"');
                  }
              }
          }
  
          // Emit content in body
  
          ja = jo.optJSONArray("childNodes");
          if (ja == null) {
              sb.append('/');
              sb.append('>');
          } else {
              sb.append('>');
              len = ja.length();
              for (i = 0; i < len; i += 1) {
                  e = ja.get(i);
                  if (e != null) {
                      if (e instanceof String) {
                          sb.append(XML.escape(e.toString()));
                      } else if (e instanceof JSONObject) {
                          sb.append(toString((JSONObject) e));
                      } else if (e instanceof JSONArray) {
                          sb.append(toString((JSONArray) e));
                      }
                  }
              }
              sb.append('<');
              sb.append('/');
              sb.append(tagName);
              sb.append('>');
          }
          return sb.toString();
      }
  }
  