/******************************************************************************* * ============LICENSE_START================================================== * * org.onap.dmaap * * =========================================================================== * * Copyright © 2017 AT&T Intellectual Property. All rights reserved. * * =========================================================================== * * 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. * * ============LICENSE_END==================================================== * * * * ECOMP is a trademark and service mark of AT&T Intellectual Property. * * ******************************************************************************/ package org.json; import java.util.Iterator; public class XML { /** The Character '&'. */ public static final Character AMP = new Character('&'); /** The Character '''. */ public static final Character APOS = new Character('\''); /** The Character '!'. */ public static final Character BANG = new Character('!'); /** The Character '='. */ public static final Character EQ = new Character('='); /** The Character '>'. */ public static final Character GT = new Character('>'); /** The Character '<'. */ public static final Character LT = new Character('<'); /** The Character '?'. */ public static final Character QUEST = new Character('?'); /** The Character '"'. */ public static final Character QUOT = new Character('"'); /** The Character '/'. */ public static final Character SLASH = new Character('/'); /** * Replace special characters with XML escapes: *
* & (ampersand) is replaced by & * < (less than) is replaced by < * > (greater than) is replaced by > * " (double quote) is replaced by " ** @param string The string to be escaped. * @return The escaped string. */ public static String escape(String string) { StringBuffer sb = new StringBuffer(); for (int i = 0, length = string.length(); i < length; i++) { char c = string.charAt(i); switch (c) { case '&': sb.append("&"); break; case '<': sb.append("<"); break; case '>': sb.append(">"); break; case '"': sb.append("""); break; case '\'': sb.append("'"); break; default: sb.append(c); } } return sb.toString(); } /** * Throw an exception if the string contains whitespace. * Whitespace is not allowed in tagNames and attributes. * @param string * @throws JSONException */ public static void noSpace(String string) throws JSONException { int i, length = string.length(); if (length == 0) { throw new JSONException("Empty string."); } for (i = 0; i < length; i += 1) { if (Character.isWhitespace(string.charAt(i))) { throw new JSONException("'" + string + "' contains a space character."); } } } /** * Scan the content following the named tag, attaching it to the context. * @param x The XMLTokener containing the source string. * @param context The JSONObject that will include the new material. * @param name The tag name. * @return true if the close tag is processed. * @throws JSONException */ private static boolean parse(XMLTokener x, JSONObject context, String name) throws JSONException { char c; int i; JSONObject jsonobject = null; String string; String tagName; Object token; // Test for and skip past these forms: // // // // ... ?> // Report errors for these forms: // <> // <= // << token = x.nextToken(); // "); return false; } x.back(); } else if (c == '[') { token = x.nextToken(); if ("CDATA".equals(token)) { if (x.next() == '[') { string = x.nextCDATA(); if (string.length() > 0) { context.accumulate("content", string); } return false; } } throw x.syntaxError("Expected 'CDATA['"); } i = 1; do { token = x.nextMeta(); if (token == null) { throw x.syntaxError("Missing '>' after ' 0); return false; } else if (token == QUEST) { // x.skipPast("?>"); return false; } else if (token == SLASH) { // Close tag token = x.nextToken(); if (name == null) { throw x.syntaxError("Mismatched close tag " + token); } if (!token.equals(name)) { throw x.syntaxError("Mismatched " + name + " and " + token); } if (x.nextToken() != GT) { throw x.syntaxError("Misshaped close tag"); } return true; } else if (token instanceof Character) { throw x.syntaxError("Misshaped tag"); // Open tag < } else { tagName = (String)token; token = null; jsonobject = new JSONObject(); for (;;) { if (token == null) { token = x.nextToken(); } // attribute = value if (token instanceof String) { string = (String)token; token = x.nextToken(); if (token == EQ) { token = x.nextToken(); if (!(token instanceof String)) { throw x.syntaxError("Missing value"); } jsonobject.accumulate(string, XML.stringToValue((String)token)); token = null; } else { jsonobject.accumulate(string, ""); } // Empty tag <.../> } else if (token == SLASH) { if (x.nextToken() != GT) { throw x.syntaxError("Misshaped tag"); } if (jsonobject.length() > 0) { context.accumulate(tagName, jsonobject); } else { context.accumulate(tagName, ""); } return false; // Content, between <...> and } else if (token == GT) { for (;;) { token = x.nextContent(); if (token == null) { if (tagName != null) { throw x.syntaxError("Unclosed tag " + tagName); } return false; } else if (token instanceof String) { string = (String)token; if (string.length() > 0) { jsonobject.accumulate("content", XML.stringToValue(string)); } // Nested element } else if (token == LT) { if (parse(x, jsonobject, tagName)) { if (jsonobject.length() == 0) { context.accumulate(tagName, ""); } else if (jsonobject.length() == 1 && jsonobject.opt("content") != null) { context.accumulate(tagName, jsonobject.opt("content")); } else { context.accumulate(tagName, jsonobject); } return false; } } } } else { throw x.syntaxError("Misshaped tag"); } } } } /** * Try to convert a string into a number, boolean, or null. If the string * can't be converted, return the string. This is much less ambitious than * JSONObject.stringToValue, especially because it does not attempt to * convert plus forms, octal forms, hex forms, or E forms lacking decimal * points. * @param string A String. * @return A simple JSON value. */ public static Object stringToValue(String string) { if ("".equals(string)) { return string; } if ("true".equalsIgnoreCase(string)) { return Boolean.TRUE; } if ("false".equalsIgnoreCase(string)) { return Boolean.FALSE; } if ("null".equalsIgnoreCase(string)) { return JSONObject.NULL; } if ("0".equals(string)) { return new Integer(0); } // If it might be a number, try converting it. If that doesn't work, // return the string. try { char initial = string.charAt(0); boolean negative = false; if (initial == '-') { initial = string.charAt(1); negative = true; } if (initial == '0' && string.charAt(negative ? 2 : 1) == '0') { return string; } if ((initial >= '0' && initial <= '9')) { if (string.indexOf('.') >= 0) { return Double.valueOf(string); } else if (string.indexOf('e') < 0 && string.indexOf('E') < 0) { Long myLong = new Long(string); if (myLong.longValue() == myLong.intValue()) { return new Integer(myLong.intValue()); } else { return myLong; } } } } catch (Exception ignore) { } return string; } /** * Convert a well-formed (but not necessarily valid) XML string into a * JSONObject. Some information may be lost in this transformation * because JSON is a data format and XML is a document format. XML uses * elements, attributes, and content text, while JSON uses unordered * collections of name/value pairs and arrays of values. JSON does not * does not like to distinguish between elements and attributes. * Sequences of similar elements are represented as JSONArrays. Content * text may be placed in a "content" member. Comments, prologs, DTDs, and *
<[ [ ]]>
are ignored.
* @param string The source string.
* @return A JSONObject containing the structured data from the XML string.
* @throws JSONException
*/
public static JSONObject toJSONObject(String string) throws JSONException {
JSONObject jo = new JSONObject();
XMLTokener x = new XMLTokener(string);
while (x.more() && x.skipPast("<")) {
parse(x, jo, null);
}
return jo;
}
/**
* Convert a JSONObject into a well-formed, element-normal XML string.
* @param object A JSONObject.
* @return A string.
* @throws JSONException
*/
public static String toString(Object object) throws JSONException {
return toString(object, null);
}
/**
* Convert a JSONObject into a well-formed, element-normal XML string.
* @param object A JSONObject.
* @param tagName The optional name of the enclosing tag.
* @return A string.
* @throws JSONException
*/
public static String toString(Object object, String tagName)
throws JSONException {
StringBuffer sb = new StringBuffer();
int i;
JSONArray ja;
JSONObject jo;
String key;
Iterator