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  package org.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.
 */
 
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.

Author(s):
JSON.org
Version:
2010-02-12
 
 public class JSONML {

    
Parse XML values and store them in a JSONArray.

Parameters:
x The XMLTokener containing the source string.
arrayForm true if array form, false if object form.
ja The JSONArray that is containing the current tag or null if we are at the outermost level.
Returns:
A JSONArray if the value is the outermost tag, otherwise null.
Throws:
JSONException
 
     private static Object parse(XMLTokener xboolean arrayForm
     		JSONArray jathrows 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 == .) {
     			token = x.nextToken();
     			if (token instanceof Character) {
 			        if (token == .) {
 
 // Close tag </
 
 			        	token = x.nextToken();
 			        	if (!(token instanceof String)) {
 			        		throw new JSONException(
 			        				"Expected a closing name instead of '" + 
 			        				token + "'.");
 			        	}
 			            if (x.nextToken() != .) {
 			                throw x.syntaxError("Misshaped close tag");
 			            }
 			            return token;
 			        } else if (token == .) {
         		
 // <!
         	
 			            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 == .) {
				                    i += 1;
				                } else if (token == .) {
				                    i -= 1;
				                }
				            } while (i > 0);
			            }
			        } else if (token == .) {
// <?
			        	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 && (attribute == "tagName" || attribute == "childNode")) {
                            throw x.syntaxError("Reserved attribute.");			        		
			        	}
	                    token = x.nextToken();
	                    if (token == .) {
	                        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 == .) {
	                    if (x.nextToken() != .) {
	                        throw x.syntaxError("Misshaped tag");
	                    }
	                    if (ja == null) {
	                    	if (arrayForm) {
	                    		return newja;
	                    	} else {
	                    		return newjo;
	                    	}
	                    }
// Content, between <...> and </...>
	                } else {
	                	if (token != .) {
	                		throw x.syntaxError("Misshaped tag");
	                	}
	                	closeTag = (String)parse(xarrayFormnewja);
	                	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 <[ [ ]]> are ignored.

Parameters:
string The source string.
Returns:
A JSONArray containing the structured data from the XML string.
Throws:
JSONException
    public static JSONArray toJSONArray(String stringthrows 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 <[ [ ]]> are ignored.

Parameters:
x An XMLTokener.
Returns:
A JSONArray containing the structured data from the XML string.
Throws:
JSONException
    public static JSONArray toJSONArray(XMLTokener xthrows JSONException {
    	return (JSONArray)parse(xtruenull);
    }


    
    
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 <[ [ ]]> are ignored.

Parameters:
x An XMLTokener of the XML source text.
Returns:
A JSONObject containing the structured data from the XML string.
Throws:
JSONException
    public static JSONObject toJSONObject(XMLTokener xthrows JSONException {
       	return (JSONObject)parse(xfalsenull);
    }
    
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 <[ [ ]]> are ignored.

Parameters:
string The XML source text.
Returns:
A JSONObject containing the structured data from the XML string.
Throws:
JSONException
    public static JSONObject toJSONObject(String stringthrows JSONException {
    	return toJSONObject(new XMLTokener(string));
    }


    
Reverse the JSONML transformation, making an XML text from a JSONArray.

Parameters:
ja A JSONArray.
Returns:
An XML string.
Throws:
JSONException
    public static String toString(JSONArray jathrows JSONException {
    	Object		 e;
    	int			 i;
    	JSONObject   jo;
    	String       k;
	    Iterator     keys;
	    int			 length;
    	StringBuffer sb = new StringBuffer();
	    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) {
else if (e instanceof JSONArray) {
					}
			    }
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.

Parameters:
jo A JSONObject.
Returns:
An XML string.
Throws:
JSONException
	public static String toString(JSONObject jothrows JSONException {
	    StringBuffer sb = new StringBuffer();
	    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 < leni += 1) {
			    e = ja.get(i);
			    if (e != null) {
			    	if (e instanceof String) {
			    		sb.append(XML.escape(e.toString()));
else if (e instanceof JSONObject) {
else if (e instanceof JSONArray) {
					}
			    }
			}
			sb.append('<');
	        sb.append('/');
			sb.append(tagName);
	        sb.append('>');
	    }
        return sb.toString();
    }
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