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com.xmlcalabash.util.JSONtoXML Maven / Gradle / Ivy
package com.xmlcalabash.util;
import com.xmlcalabash.core.XProcConstants;
import com.xmlcalabash.core.XProcException;
import net.sf.saxon.s9api.Processor;
import net.sf.saxon.s9api.QName;
import net.sf.saxon.s9api.XdmNode;
import net.sf.saxon.serialize.charcode.XMLCharacterData;
import org.json.JSONArray;
import org.json.JSONException;
import org.json.JSONObject;
import org.json.JSONTokener;
import java.util.Iterator;
/**
* Created by IntelliJ IDEA.
* User: ndw
* Date: 12/18/10
* Time: 4:24 PM
* To change this template use File | Settings | File Templates.
*/
public class JSONtoXML {
public static final String CALABASH_DEPRECATED = "calabash-deprecated";
public static final String CALABASH = "calabash";
public static final String JSONX = "jsonx";
public static final String JXML = "jxml";
public static final String MARKLOGIC = "marklogic";
public static final String JSONX_NS = "http://www.ibm.com/xmlns/prod/2009/jsonx";
public static final String MLJS_NS = "http://marklogic.com/json";
public static final String JXML_NS = "http://www.xmlsh.org/jxml";
private static final QName _type = new QName("", "type");
private static final QName _name = new QName("", "name");
private static final QName c_json = new QName("c", XProcConstants.NS_XPROC_STEP, "json");
private static final QName c_pair = new QName("c", XProcConstants.NS_XPROC_STEP, "pair");
private static final QName c_item = new QName("c", XProcConstants.NS_XPROC_STEP, "item");
private static final QName _json = new QName("json");
private static final QName _pair = new QName("pair");
private static final QName _item = new QName("item");
private static final QName j_object = new QName("j", JSONX_NS, "object");
private static final QName j_array = new QName("j", JSONX_NS, "array");
private static final QName j_string = new QName("j", JSONX_NS, "string");
private static final QName j_number = new QName("j", JSONX_NS, "number");
private static final QName j_boolean = new QName("j", JSONX_NS, "boolean");
private static final QName j_null = new QName("j", JSONX_NS, "null");
private static final QName mj_json = new QName("j", MLJS_NS, "json");
private static final QName jx_object = new QName("j", JXML_NS, "object");
private static final QName jx_member = new QName("j", JXML_NS, "member");
private static final QName jx_boolean = new QName("j", JXML_NS, "boolean");
private static final QName jx_array = new QName("j", JXML_NS, "array");
private static final QName jx_string = new QName("j", JXML_NS, "string");
private static final QName jx_number = new QName("j", JXML_NS, "number");
private static final QName jx_null = new QName("j", JXML_NS, "null");
public static boolean knownFlavor(String jsonFlavor) {
return (JSONtoXML.CALABASH_DEPRECATED.equals(jsonFlavor)
|| JSONtoXML.CALABASH.equals(jsonFlavor)
|| JSONtoXML.JSONX.equals(jsonFlavor)
|| JSONtoXML.JXML.equals(jsonFlavor)
|| JSONtoXML.MARKLOGIC.equals(jsonFlavor));
}
public static XdmNode convert(Processor processor, JSONTokener jt, String flavor) {
TreeWriter tree = new TreeWriter(processor);
tree.startDocument(null);
if (JSONX.equals(flavor)) {
buildJsonX(tree, jt);
} else if (MARKLOGIC.equals(flavor)) {
buildMarkLogic(tree, jt);
} else if (JXML.equals(flavor)) {
buildJxml(tree, jt);
} else if (CALABASH.equals(flavor)) {
buildMine(tree, jt, true);
} else {
buildMine(tree, jt, false);
}
tree.endDocument();
return tree.getResult();
}
private static void buildJsonX(TreeWriter tree, JSONTokener jt) {
try {
char ch = jt.next();
jt.back();
if (ch == '{') {
tree.addStartElement(j_object);
tree.startContent();
buildJsonXPairs(tree, new JSONObject(jt));
} else {
tree.addStartElement(j_array);
buildJsonXArray(tree, new JSONArray(jt));
}
} catch (JSONException je) {
throw new XProcException(je);
}
tree.addEndElement();
}
private static void buildJsonXPairs(TreeWriter tree, JSONObject jo) {
try {
Iterator keys = jo.keys();
while (keys.hasNext()) {
String name = keys.next();
Object json = jo.get(name);
serializeJsonX(tree, json, name);
}
} catch (JSONException je) {
throw new XProcException(je);
}
}
private static void buildJsonXArray(TreeWriter tree, JSONArray arr) {
try {
for (int pos = 0; pos < arr.length(); pos++) {
Object json = arr.get(pos);
serializeJsonX(tree, json, null);
}
} catch (JSONException je) {
throw new XProcException(je);
}
}
private static void serializeJsonX(TreeWriter tree, Object json, String name) {
if (json instanceof JSONObject) {
tree.addStartElement(j_object);
if (name != null) { tree.addAttribute(_name, name); }
tree.startContent();
buildJsonXPairs(tree, (JSONObject) json);
tree.addEndElement();
} else if (json instanceof JSONArray) {
tree.addStartElement(j_array);
if (name != null) { tree.addAttribute(_name, name); }
tree.startContent();
buildJsonXArray(tree, (JSONArray) json);
tree.addEndElement();
} else if (json instanceof Integer || json instanceof Double || json instanceof Long) {
tree.addStartElement(j_number);
if (name != null) { tree.addAttribute(_name, name); }
tree.startContent();
tree.addText(json.toString());
tree.addEndElement();
} else if (json instanceof String) {
tree.addStartElement(j_string);
if (name != null) { tree.addAttribute(_name, name); }
tree.startContent();
tree.addText(json.toString());
tree.addEndElement();
} else if (json instanceof Boolean) {
tree.addStartElement(j_boolean);
if (name != null) { tree.addAttribute(_name, name); }
tree.startContent();
tree.addText(json.toString());
tree.addEndElement();
} else if (json == JSONObject.NULL) {
tree.addStartElement(j_null);
if (name != null) { tree.addAttribute(_name, name); }
tree.startContent();
tree.addEndElement();
} else {
throw new XProcException("Unexpected type in JSON conversion.");
}
}
private static void buildMarkLogic(TreeWriter tree, JSONTokener jt) {
tree.addStartElement(mj_json);
try {
char ch = jt.next();
jt.back();
if (ch == '{') {
tree.addAttribute(_type, "object");
tree.startContent();
buildMarkLogicPairs(tree, new JSONObject(jt));
} else {
tree.addAttribute(_type, "object");
buildMarkLogicArray(tree, new JSONArray(jt));
}
} catch (JSONException je) {
throw new XProcException(je);
}
tree.addEndElement();
}
private static void buildMarkLogicPairs(TreeWriter tree, JSONObject jo) {
try {
Iterator keys = jo.keys();
while (keys.hasNext()) {
String name = keys.next();
Object json = jo.get(name);
serializeMarkLogic(tree, json, name);
}
} catch (JSONException je) {
throw new XProcException(je);
}
}
private static void buildMarkLogicArray(TreeWriter tree, JSONArray arr) {
try {
for (int pos = 0; pos < arr.length(); pos++) {
Object json = arr.get(pos);
serializeMarkLogic(tree, json, null);
}
} catch (JSONException je) {
throw new XProcException(je);
}
}
private static void serializeMarkLogic(TreeWriter tree, Object json, String name) {
String localName = "item";
if (name != null) {
if ("".equals(name)) {
localName = "_";
} else {
localName = "";
for (int pos = 0; pos < name.length(); pos++) {
int ch = name.charAt(pos);
if ('_' != ch
&& ((pos == 0 && XMLCharacterData.isNCNameStart10(ch))
|| (pos > 0 && XMLCharacterData.isNCName10(ch)))) {
localName += Character.toString((char) ch);
} else {
localName += String.format("_%04x", ch);
}
}
}
}
QName elemName = new QName("j", MLJS_NS, localName);
tree.addStartElement(elemName);
if (json instanceof JSONObject) {
tree.addAttribute(_type, "object");
tree.startContent();
buildMarkLogicPairs(tree, (JSONObject) json);
} else if (json instanceof JSONArray) {
tree.addAttribute(_type, "array");
tree.startContent();
buildMarkLogicArray(tree, (JSONArray) json);
} else if (json instanceof Integer || json instanceof Double || json instanceof Long) {
tree.addAttribute(_type, "number");
tree.startContent();
tree.addText(json.toString());
} else if (json instanceof String) {
tree.addAttribute(_type, "string");
tree.startContent();
tree.addText(json.toString());
} else if (json instanceof Boolean) {
tree.addAttribute(_type, "boolean");
tree.startContent();
tree.addText(json.toString());
} else if (json == JSONObject.NULL) {
tree.addAttribute(_type, "null");
tree.startContent();
} else {
throw new XProcException("Unexpected type in JSON conversion.");
}
tree.addEndElement();
}
private static void buildJxml(TreeWriter tree, JSONTokener jt) {
try {
char ch = jt.next();
jt.back();
if (ch == '{') {
tree.addStartElement(jx_object);
tree.startContent();
buildJxmlPairs(tree, new JSONObject(jt));
} else {
tree.addStartElement(jx_array);
buildJxmlArray(tree, new JSONArray(jt));
}
} catch (JSONException je) {
throw new XProcException(je);
}
tree.addEndElement();
}
private static void buildJxmlPairs(TreeWriter tree, JSONObject jo) {
try {
Iterator keys = jo.keys();
while (keys.hasNext()) {
String name = keys.next();
Object json = jo.get(name);
serializeJxml(tree, json, name);
}
} catch (JSONException je) {
throw new XProcException(je);
}
}
private static void buildJxmlArray(TreeWriter tree, JSONArray arr) {
try {
for (int pos = 0; pos < arr.length(); pos++) {
Object json = arr.get(pos);
serializeJxml(tree, json, null);
}
} catch (JSONException je) {
throw new XProcException(je);
}
}
private static void serializeJxml(TreeWriter tree, Object json, String name) {
if (name != null) {
tree.addStartElement(jx_member);
tree.addAttribute(_name, name);
tree.startContent();
}
if (json instanceof JSONObject) {
tree.addStartElement(jx_object);
tree.startContent();
buildJxmlPairs(tree, (JSONObject) json);
tree.addEndElement();
} else if (json instanceof JSONArray) {
tree.addStartElement(jx_array);
tree.startContent();
buildJxmlArray(tree, (JSONArray) json);
tree.addEndElement();
} else if (json instanceof Integer || json instanceof Double || json instanceof Long) {
tree.addStartElement(jx_number);
tree.startContent();
tree.addText(json.toString());
tree.addEndElement();
} else if (json instanceof String) {
tree.addStartElement(jx_string);
tree.startContent();
tree.addText(json.toString());
tree.addEndElement();
} else if (json instanceof Boolean) {
tree.addStartElement(jx_boolean);
tree.startContent();
tree.addText(json.toString());
tree.addEndElement();
} else if (json == JSONObject.NULL) {
tree.addStartElement(jx_null);
tree.startContent();
tree.addEndElement();
} else {
throw new XProcException("Unexpected type in JSON conversion.");
}
if (name != null) {
tree.addEndElement();
}
}
private static void buildMine(TreeWriter tree, JSONTokener jt, boolean usens) {
tree.addStartElement(usens ? c_json : _json);
try {
char ch = jt.next();
jt.back();
if (ch == '{') {
tree.addAttribute(_type, "object");
tree.startContent();
buildMyPairs(tree, new JSONObject(jt), usens);
} else {
tree.addAttribute(_type, "array");
tree.startContent();
buildMyArray(tree, new JSONArray(jt), usens);
}
} catch (JSONException je) {
throw new XProcException(je);
}
tree.addEndElement();
}
private static void buildMyPairs(TreeWriter tree, JSONObject jo, boolean usens) {
try {
Iterator keys = jo.keys();
while (keys.hasNext()) {
String name = keys.next();
Object json = jo.get(name);
tree.addStartElement(usens ? c_pair : _pair);
tree.addAttribute(_name, name);
if (json instanceof JSONObject) {
tree.addAttribute(_type, "object");
tree.startContent();
buildMyPairs(tree, (JSONObject) json, usens);
} else if (json instanceof JSONArray) {
tree.addAttribute(_type, "array");
tree.startContent();
buildMyArray(tree, (JSONArray) json, usens);
} else if (json instanceof Integer) {
tree.addAttribute(_type, "number");
tree.startContent();
tree.addText(json.toString());
} else if (json instanceof Double) {
tree.addAttribute(_type, "number");
tree.startContent();
tree.addText(json.toString());
} else if (json instanceof Long) {
tree.addAttribute(_type, "number");
tree.startContent();
tree.addText(json.toString());
} else if (json instanceof String) {
tree.addAttribute(_type, "string");
tree.startContent();
tree.addText(json.toString());
} else if (json instanceof Boolean) {
tree.addAttribute(_type, "boolean");
tree.startContent();
tree.addText(json.toString());
} else if (json == JSONObject.NULL) {
tree.addAttribute(_type, "null");
tree.startContent();
} else {
throw new XProcException("Unexpected type in JSON conversion.");
}
tree.addEndElement();
}
} catch (JSONException je) {
throw new XProcException(je);
}
}
private static void buildMyArray(TreeWriter tree, JSONArray arr, boolean usens) {
try {
for (int pos = 0; pos < arr.length(); pos++) {
Object json = arr.get(pos);
tree.addStartElement(usens ? c_item : _item);
if (json instanceof JSONObject) {
tree.addAttribute(_type, "object");
tree.startContent();
buildMyPairs(tree, (JSONObject) json, usens);
} else if (json instanceof JSONArray) {
tree.addAttribute(_type, "array");
tree.startContent();
buildMyArray(tree, (JSONArray) json, usens);
} else if (json instanceof Integer) {
tree.addAttribute(_type, "number");
tree.startContent();
tree.addText(json.toString());
} else if (json instanceof Double) {
tree.addAttribute(_type, "number");
tree.startContent();
tree.addText(json.toString());
} else if (json instanceof Long) {
tree.addAttribute(_type, "number");
tree.startContent();
tree.addText(json.toString());
} else if (json instanceof String) {
tree.addAttribute(_type, "string");
tree.startContent();
tree.addText(json.toString());
} else if (json instanceof Boolean) {
tree.addAttribute(_type, "boolean");
tree.startContent();
tree.addText(json.toString());
} else if (json == JSONObject.NULL) {
tree.addAttribute(_type, "null");
tree.startContent();
} else {
throw new XProcException("Unexpected type in JSON conversion.");
}
tree.addEndElement();
}
} catch (JSONException je) {
throw new XProcException(je);
}
}
}
