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package org.json;
/*
Public Domain.
*/
/**
* 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 JSON.org
* @version 2016-01-30
*/
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.
* @param keepStrings Don't type-convert text nodes and attribute values
* @return A JSONArray if the value is the outermost tag, otherwise null.
* @throws JSONException if a parsing error occurs
*/
private static Object parse(
XMLTokener x,
boolean arrayForm,
JSONArray ja,
boolean keepStrings,
int currentNestingDepth
) throws JSONException {
return parse(x,arrayForm, ja,
keepStrings ? JSONMLParserConfiguration.KEEP_STRINGS : JSONMLParserConfiguration.ORIGINAL,
currentNestingDepth);
}
/**
* 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.
* @param config The parser configuration:
* JSONMLParserConfiguration.ORIGINAL is the default behaviour;
* JSONMLParserConfiguration.KEEP_STRINGS means Don't type-convert text nodes and attribute values.
* @return A JSONArray if the value is the outermost tag, otherwise null.
* @throws JSONException if a parsing error occurs
*/
private static Object parse(
XMLTokener x,
boolean arrayForm,
JSONArray ja,
JSONMLParserConfiguration config,
int currentNestingDepth
) 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) {
if (!x.more()) {
throw x.syntaxError("Bad XML");
}
token = x.nextContent();
if (token == XML.LT) {
token = x.nextToken();
if (token instanceof Character) {
if (token == XML.SLASH) {
// Close tag ");
} else {
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 ' 0);
}
} else if (token == XML.QUEST) {
// ");
} 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, config.isKeepStrings() ? ((String)token) :XML.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;
}
return newjo;
}
// Content, between <...> and
} else {
if (token != XML.GT) {
throw x.syntaxError("Misshaped tag");
}
if (currentNestingDepth == config.getMaxNestingDepth()) {
throw x.syntaxError("Maximum nesting depth of " + config.getMaxNestingDepth() + " reached");
}
closeTag = (String)parse(x, arrayForm, newja, config, currentNestingDepth + 1);
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;
}
return newjo;
}
}
}
}
} else {
if (ja != null) {
ja.put(token instanceof String
? (config.isKeepStrings() ? XML.unescape((String)token) : XML.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 <[ [ ]]>}
are ignored.
* @param string The source string.
* @return A JSONArray containing the structured data from the XML string.
* @throws JSONException Thrown on error converting to a JSONArray
*/
public static JSONArray toJSONArray(String string) throws JSONException {
return (JSONArray)parse(new XMLTokener(string), true, null, JSONMLParserConfiguration.ORIGINAL, 0);
}
/**
* 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.
* As opposed to toJSONArray this method does not attempt to convert
* any text node or attribute value to any type
* but just leaves it as a string.
* Comments, prologs, DTDs, and
{@code <[ [ ]]>}
are ignored.
* @param string The source string.
* @param keepStrings If true, then values will not be coerced into boolean
* or numeric values and will instead be left as strings
* @return A JSONArray containing the structured data from the XML string.
* @throws JSONException Thrown on error converting to a JSONArray
*/
public static JSONArray toJSONArray(String string, boolean keepStrings) throws JSONException {
return (JSONArray)parse(new XMLTokener(string), true, null, keepStrings, 0);
}
/**
* 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.
* As opposed to toJSONArray this method does not attempt to convert
* any text node or attribute value to any type
* but just leaves it as a string.
* Comments, prologs, DTDs, and
{@code <[ [ ]]>}
are ignored.
* @param string The source string.
* @param config The parser configuration:
* JSONMLParserConfiguration.ORIGINAL is the default behaviour;
* JSONMLParserConfiguration.KEEP_STRINGS means values will not be coerced into boolean
* or numeric values and will instead be left as strings
* @return A JSONArray containing the structured data from the XML string.
* @throws JSONException Thrown on error converting to a JSONArray
*/
public static JSONArray toJSONArray(String string, JSONMLParserConfiguration config) throws JSONException {
return (JSONArray)parse(new XMLTokener(string), true, null, config, 0);
}
/**
* 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.
* As opposed to toJSONArray this method does not attempt to convert
* any text node or attribute value to any type
* but just leaves it as a string.
* Comments, prologs, DTDs, and
{@code <[ [ ]]>}
are ignored.
* @param x An XMLTokener.
* @param config The parser configuration:
* JSONMLParserConfiguration.ORIGINAL is the default behaviour;
* JSONMLParserConfiguration.KEEP_STRINGS means values will not be coerced into boolean
* or numeric values and will instead be left as strings
* @return A JSONArray containing the structured data from the XML string.
* @throws JSONException Thrown on error converting to a JSONArray
*/
public static JSONArray toJSONArray(XMLTokener x, JSONMLParserConfiguration config) throws JSONException {
return (JSONArray)parse(x, true, null, config, 0);
}
/**
* 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.
* As opposed to toJSONArray this method does not attempt to convert
* any text node or attribute value to any type
* but just leaves it as a string.
* Comments, prologs, DTDs, and
{@code <[ [ ]]>}
are ignored.
* @param x An XMLTokener.
* @param keepStrings If true, then values will not be coerced into boolean
* or numeric values and will instead be left as strings
* @return A JSONArray containing the structured data from the XML string.
* @throws JSONException Thrown on error converting to a JSONArray
*/
public static JSONArray toJSONArray(XMLTokener x, boolean keepStrings) throws JSONException {
return (JSONArray)parse(x, true, null, keepStrings, 0);
}
/**
* 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 <[ [ ]]>}
are ignored.
* @param x An XMLTokener.
* @return A JSONArray containing the structured data from the XML string.
* @throws JSONException Thrown on error converting to a JSONArray
*/
public static JSONArray toJSONArray(XMLTokener x) throws JSONException {
return (JSONArray)parse(x, true, null, false, 0);
}
/**
* 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 <[ [ ]]>}
are ignored.
* @param string The XML source text.
* @return A JSONObject containing the structured data from the XML string.
* @throws JSONException Thrown on error converting to a JSONObject
*/
public static JSONObject toJSONObject(String string) throws JSONException {
return (JSONObject)parse(new XMLTokener(string), false, null, false, 0);
}
/**
* 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 <[ [ ]]>}
are ignored.
* @param string The XML source text.
* @param keepStrings If true, then values will not be coerced into boolean
* or numeric values and will instead be left as strings
* @return A JSONObject containing the structured data from the XML string.
* @throws JSONException Thrown on error converting to a JSONObject
*/
public static JSONObject toJSONObject(String string, boolean keepStrings) throws JSONException {
return (JSONObject)parse(new XMLTokener(string), false, null, keepStrings, 0);
}
/**
* 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 <[ [ ]]>}
are ignored.
* @param string The XML source text.
* @param config The parser configuration:
* JSONMLParserConfiguration.ORIGINAL is the default behaviour;
* JSONMLParserConfiguration.KEEP_STRINGS means values will not be coerced into boolean
* or numeric values and will instead be left as strings
* @return A JSONObject containing the structured data from the XML string.
* @throws JSONException Thrown on error converting to a JSONObject
*/
public static JSONObject toJSONObject(String string, JSONMLParserConfiguration config) throws JSONException {
return (JSONObject)parse(new XMLTokener(string), false, null, config, 0);
}
/**
* 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 <[ [ ]]>}
are ignored.
* @param x An XMLTokener of the XML source text.
* @return A JSONObject containing the structured data from the XML string.
* @throws JSONException Thrown on error converting to a JSONObject
*/
public static JSONObject toJSONObject(XMLTokener x) throws JSONException {
return (JSONObject)parse(x, false, null, false, 0);
}
/**
* 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 <[ [ ]]>}
are ignored.
* @param x An XMLTokener of the XML source text.
* @param keepStrings If true, then values will not be coerced into boolean
* or numeric values and will instead be left as strings
* @return A JSONObject containing the structured data from the XML string.
* @throws JSONException Thrown on error converting to a JSONObject
*/
public static JSONObject toJSONObject(XMLTokener x, boolean keepStrings) throws JSONException {
return (JSONObject)parse(x, false, null, keepStrings, 0);
}
/**
* 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 <[ [ ]]>}
are ignored.
* @param x An XMLTokener of the XML source text.
* @param config The parser configuration:
* JSONMLParserConfiguration.ORIGINAL is the default behaviour;
* JSONMLParserConfiguration.KEEP_STRINGS means values will not be coerced into boolean
* or numeric values and will instead be left as strings
* @return A JSONObject containing the structured data from the XML string.
* @throws JSONException Thrown on error converting to a JSONObject
*/
public static JSONObject toJSONObject(XMLTokener x, JSONMLParserConfiguration config) throws JSONException {
return (JSONObject)parse(x, false, null, config, 0);
}
/**
* Reverse the JSONML transformation, making an XML text from a JSONArray.
* @param ja A JSONArray.
* @return An XML string.
* @throws JSONException Thrown on error converting to a string
*/
public static String toString(JSONArray ja) throws JSONException {
int i;
JSONObject jo;
int length;
Object object;
StringBuilder sb = new StringBuilder();
String tagName;
// Emit = length) {
sb.append('/');
sb.append('>');
} else {
sb.append('>');
do {
object = ja.get(i);
i += 1;
if (object != null) {
if (object instanceof String) {
sb.append(XML.escape(object.toString()));
} else if (object instanceof JSONObject) {
sb.append(toString((JSONObject)object));
} else if (object instanceof JSONArray) {
sb.append(toString((JSONArray)object));
} else {
sb.append(object.toString());
}
}
} 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 Thrown on error converting to a string
*/
public static String toString(JSONObject jo) throws JSONException {
StringBuilder sb = new StringBuilder();
int i;
JSONArray ja;
int length;
Object object;
String tagName;
Object value;
//Emit ');
} else {
sb.append('>');
length = ja.length();
for (i = 0; i < length; i += 1) {
object = ja.get(i);
if (object != null) {
if (object instanceof String) {
sb.append(XML.escape(object.toString()));
} else if (object instanceof JSONObject) {
sb.append(toString((JSONObject)object));
} else if (object instanceof JSONArray) {
sb.append(toString((JSONArray)object));
} else {
sb.append(object.toString());
}
}
}
sb.append('<');
sb.append('/');
sb.append(tagName);
sb.append('>');
}
return sb.toString();
}
}
