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git-svn-id: svn://svn.code.sf.net/p/writer2latex/code/trunk@72 f0f2a975-2e09-46c8-9428-3b39399b9f3c
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32 changed files with 6492 additions and 68 deletions
455
source/java/org/json/JSONML.java
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455
source/java/org/json/JSONML.java
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package org.json;
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/*
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Copyright (c) 2008 JSON.org
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Permission is hereby granted, free of charge, to any person obtaining a copy
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of this software and associated documentation files (the "Software"), to deal
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in the Software without restriction, including without limitation the rights
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to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
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copies of the Software, and to permit persons to whom the Software is
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furnished to do so, subject to the following conditions:
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The above copyright notice and this permission notice shall be included in all
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copies or substantial portions of the Software.
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The Software shall be used for Good, not Evil.
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THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
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AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
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OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
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SOFTWARE.
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*/
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import java.util.Iterator;
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/**
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* This provides static methods to convert an XML text into a JSONArray or
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* JSONObject, and to covert a JSONArray or JSONObject into an XML text using
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* the JsonML transform.
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* @author JSON.org
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* @version 2010-02-12
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*/
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public class JSONML {
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/**
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* Parse XML values and store them in a JSONArray.
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* @param x The XMLTokener containing the source string.
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* @param arrayForm true if array form, false if object form.
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* @param ja The JSONArray that is containing the current tag or null
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* if we are at the outermost level.
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* @return A JSONArray if the value is the outermost tag, otherwise null.
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* @throws JSONException
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*/
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private static Object parse(XMLTokener x, boolean arrayForm,
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JSONArray ja) throws JSONException {
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String attribute;
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char c;
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String closeTag = null;
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int i;
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JSONArray newja = null;
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JSONObject newjo = null;
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Object token;
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String tagName = null;
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// Test for and skip past these forms:
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// <!-- ... -->
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// <![ ... ]]>
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// <! ... >
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// <? ... ?>
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while (true) {
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token = x.nextContent();
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if (token == XML.LT) {
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token = x.nextToken();
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if (token instanceof Character) {
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if (token == XML.SLASH) {
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// Close tag </
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token = x.nextToken();
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if (!(token instanceof String)) {
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throw new JSONException(
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"Expected a closing name instead of '" +
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token + "'.");
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}
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if (x.nextToken() != XML.GT) {
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throw x.syntaxError("Misshaped close tag");
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}
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return token;
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} else if (token == XML.BANG) {
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// <!
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c = x.next();
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if (c == '-') {
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if (x.next() == '-') {
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x.skipPast("-->");
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}
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x.back();
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} else if (c == '[') {
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token = x.nextToken();
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if (token.equals("CDATA") && x.next() == '[') {
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if (ja != null) {
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ja.put(x.nextCDATA());
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}
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} else {
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throw x.syntaxError("Expected 'CDATA['");
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}
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} else {
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i = 1;
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do {
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token = x.nextMeta();
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if (token == null) {
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throw x.syntaxError("Missing '>' after '<!'.");
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} else if (token == XML.LT) {
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i += 1;
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} else if (token == XML.GT) {
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i -= 1;
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}
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} while (i > 0);
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}
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} else if (token == XML.QUEST) {
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// <?
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x.skipPast("?>");
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} else {
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throw x.syntaxError("Misshaped tag");
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}
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// Open tag <
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} else {
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if (!(token instanceof String)) {
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throw x.syntaxError("Bad tagName '" + token + "'.");
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}
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tagName = (String)token;
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newja = new JSONArray();
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newjo = new JSONObject();
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if (arrayForm) {
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newja.put(tagName);
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if (ja != null) {
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ja.put(newja);
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}
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} else {
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newjo.put("tagName", tagName);
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if (ja != null) {
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ja.put(newjo);
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}
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}
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token = null;
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for (;;) {
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if (token == null) {
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token = x.nextToken();
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}
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if (token == null) {
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throw x.syntaxError("Misshaped tag");
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}
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if (!(token instanceof String)) {
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break;
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}
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// attribute = value
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attribute = (String)token;
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if (!arrayForm && (attribute == "tagName" || attribute == "childNode")) {
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throw x.syntaxError("Reserved attribute.");
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}
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token = x.nextToken();
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if (token == XML.EQ) {
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token = x.nextToken();
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if (!(token instanceof String)) {
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throw x.syntaxError("Missing value");
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}
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newjo.accumulate(attribute, JSONObject.stringToValue((String)token));
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token = null;
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} else {
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newjo.accumulate(attribute, "");
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}
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}
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if (arrayForm && newjo.length() > 0) {
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newja.put(newjo);
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}
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// Empty tag <.../>
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if (token == XML.SLASH) {
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if (x.nextToken() != XML.GT) {
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throw x.syntaxError("Misshaped tag");
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}
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if (ja == null) {
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if (arrayForm) {
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return newja;
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} else {
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return newjo;
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}
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}
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// Content, between <...> and </...>
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} else {
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if (token != XML.GT) {
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throw x.syntaxError("Misshaped tag");
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}
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closeTag = (String)parse(x, arrayForm, newja);
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if (closeTag != null) {
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if (!closeTag.equals(tagName)) {
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throw x.syntaxError("Mismatched '" + tagName +
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"' and '" + closeTag + "'");
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}
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tagName = null;
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if (!arrayForm && newja.length() > 0) {
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newjo.put("childNodes", newja);
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}
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if (ja == null) {
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if (arrayForm) {
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return newja;
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} else {
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return newjo;
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}
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}
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}
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}
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}
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} else {
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if (ja != null) {
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ja.put(token instanceof String ?
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JSONObject.stringToValue((String)token) : token);
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}
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}
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}
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}
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/**
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* Convert a well-formed (but not necessarily valid) XML string into a
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* JSONArray using the JsonML transform. Each XML tag is represented as
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* a JSONArray in which the first element is the tag name. If the tag has
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* attributes, then the second element will be JSONObject containing the
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* name/value pairs. If the tag contains children, then strings and
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* JSONArrays will represent the child tags.
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* Comments, prologs, DTDs, and <code><[ [ ]]></code> are ignored.
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* @param string The source string.
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* @return A JSONArray containing the structured data from the XML string.
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* @throws JSONException
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*/
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public static JSONArray toJSONArray(String string) throws JSONException {
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return toJSONArray(new XMLTokener(string));
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}
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/**
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* Convert a well-formed (but not necessarily valid) XML string into a
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* JSONArray using the JsonML transform. Each XML tag is represented as
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* a JSONArray in which the first element is the tag name. If the tag has
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* attributes, then the second element will be JSONObject containing the
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* name/value pairs. If the tag contains children, then strings and
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* JSONArrays will represent the child content and tags.
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* Comments, prologs, DTDs, and <code><[ [ ]]></code> are ignored.
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* @param x An XMLTokener.
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* @return A JSONArray containing the structured data from the XML string.
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* @throws JSONException
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*/
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public static JSONArray toJSONArray(XMLTokener x) throws JSONException {
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return (JSONArray)parse(x, true, null);
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}
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/**
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* Convert a well-formed (but not necessarily valid) XML string into a
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* JSONObject using the JsonML transform. Each XML tag is represented as
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* a JSONObject with a "tagName" property. If the tag has attributes, then
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* the attributes will be in the JSONObject as properties. If the tag
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* contains children, the object will have a "childNodes" property which
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* will be an array of strings and JsonML JSONObjects.
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* Comments, prologs, DTDs, and <code><[ [ ]]></code> are ignored.
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* @param x An XMLTokener of the XML source text.
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* @return A JSONObject containing the structured data from the XML string.
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* @throws JSONException
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*/
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public static JSONObject toJSONObject(XMLTokener x) throws JSONException {
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return (JSONObject)parse(x, false, null);
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}
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/**
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* Convert a well-formed (but not necessarily valid) XML string into a
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* JSONObject using the JsonML transform. Each XML tag is represented as
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* a JSONObject with a "tagName" property. If the tag has attributes, then
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* the attributes will be in the JSONObject as properties. If the tag
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* contains children, the object will have a "childNodes" property which
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* will be an array of strings and JsonML JSONObjects.
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* Comments, prologs, DTDs, and <code><[ [ ]]></code> are ignored.
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* @param string The XML source text.
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* @return A JSONObject containing the structured data from the XML string.
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* @throws JSONException
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*/
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public static JSONObject toJSONObject(String string) throws JSONException {
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return toJSONObject(new XMLTokener(string));
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}
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/**
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* Reverse the JSONML transformation, making an XML text from a JSONArray.
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* @param ja A JSONArray.
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* @return An XML string.
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* @throws JSONException
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*/
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public static String toString(JSONArray ja) throws JSONException {
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Object e;
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int i;
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JSONObject jo;
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String k;
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Iterator keys;
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int length;
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StringBuffer sb = new StringBuffer();
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String tagName;
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String v;
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// Emit <tagName
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tagName = ja.getString(0);
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XML.noSpace(tagName);
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tagName = XML.escape(tagName);
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sb.append('<');
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sb.append(tagName);
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e = ja.opt(1);
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if (e instanceof JSONObject) {
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i = 2;
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jo = (JSONObject)e;
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// Emit the attributes
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keys = jo.keys();
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while (keys.hasNext()) {
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k = keys.next().toString();
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XML.noSpace(k);
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v = jo.optString(k);
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if (v != null) {
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sb.append(' ');
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sb.append(XML.escape(k));
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sb.append('=');
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sb.append('"');
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sb.append(XML.escape(v));
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sb.append('"');
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}
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}
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} else {
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i = 1;
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}
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//Emit content in body
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length = ja.length();
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if (i >= length) {
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sb.append('/');
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sb.append('>');
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} else {
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sb.append('>');
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do {
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e = ja.get(i);
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i += 1;
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if (e != null) {
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if (e instanceof String) {
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sb.append(XML.escape(e.toString()));
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} else if (e instanceof JSONObject) {
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sb.append(toString((JSONObject)e));
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} else if (e instanceof JSONArray) {
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sb.append(toString((JSONArray)e));
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}
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}
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} while (i < length);
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sb.append('<');
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sb.append('/');
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sb.append(tagName);
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sb.append('>');
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}
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return sb.toString();
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}
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/**
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* Reverse the JSONML transformation, making an XML text from a JSONObject.
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* The JSONObject must contain a "tagName" property. If it has children,
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* then it must have a "childNodes" property containing an array of objects.
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* The other properties are attributes with string values.
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* @param jo A JSONObject.
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* @return An XML string.
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* @throws JSONException
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*/
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public static String toString(JSONObject jo) throws JSONException {
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StringBuffer sb = new StringBuffer();
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Object e;
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int i;
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JSONArray ja;
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String k;
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Iterator keys;
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int len;
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String tagName;
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String v;
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//Emit <tagName
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tagName = jo.optString("tagName");
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if (tagName == null) {
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return XML.escape(jo.toString());
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}
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XML.noSpace(tagName);
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tagName = XML.escape(tagName);
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sb.append('<');
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sb.append(tagName);
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//Emit the attributes
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keys = jo.keys();
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while (keys.hasNext()) {
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k = keys.next().toString();
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if (!k.equals("tagName") && !k.equals("childNodes")) {
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XML.noSpace(k);
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v = jo.optString(k);
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if (v != null) {
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sb.append(' ');
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sb.append(XML.escape(k));
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sb.append('=');
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sb.append('"');
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sb.append(XML.escape(v));
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sb.append('"');
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}
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}
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}
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//Emit content in body
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ja = jo.optJSONArray("childNodes");
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if (ja == null) {
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sb.append('/');
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sb.append('>');
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} else {
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sb.append('>');
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len = ja.length();
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for (i = 0; i < len; i += 1) {
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e = ja.get(i);
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if (e != null) {
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if (e instanceof String) {
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sb.append(XML.escape(e.toString()));
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} else if (e instanceof JSONObject) {
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sb.append(toString((JSONObject)e));
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} else if (e instanceof JSONArray) {
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sb.append(toString((JSONArray)e));
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}
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}
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}
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sb.append('<');
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sb.append('/');
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sb.append(tagName);
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sb.append('>');
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}
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return sb.toString();
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}
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}
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