private static void propertyWalk(IElement root,
JSONObject properties, JSONArray children)
{
string[] className=getClassNames(root);
if(className.Length>0){
IList<string> types=new List<string>();
bool hasProperties=false;
foreach(var cls in className){
if(cls.StartsWith("p-",StringComparison.Ordinal) && properties!=null){
hasProperties=true;
} else if(cls.StartsWith("u-",StringComparison.Ordinal) && properties!=null){
hasProperties=true;
} else if(cls.StartsWith("dt-",StringComparison.Ordinal) && properties!=null){
hasProperties=true;
} else if(cls.StartsWith("e-",StringComparison.Ordinal) && properties!=null){
hasProperties=true;
} else if(cls.StartsWith("h-",StringComparison.Ordinal)){
types.Add(cls);
}
}
if(types.Count==0 && hasProperties){
// has properties and isn't a microformat
// root
foreach(var cls in className){
if(cls.StartsWith("p-",StringComparison.Ordinal)){
string value=getPValue(root);
if(!StringUtility.isNullOrSpaces(value)) {
accumulateValue(properties,cls.Substring(2),value);
}
} else if(cls.StartsWith("u-",StringComparison.Ordinal)){
accumulateValue(properties,cls.Substring(2),
getUValue(root));
} else if(cls.StartsWith("dt-",StringComparison.Ordinal)){
accumulateValue(properties,cls.Substring(3),
getDTValue(root,getLastKnownTime(properties)));
} else if(cls.StartsWith("e-",StringComparison.Ordinal)){
accumulateValue(properties,cls.Substring(2),
getEValue(root));
}
}
} else if(types.Count>0){
// this is a child microformat
// with no properties
JSONObject obj=new JSONObject();
obj.put("type", new JSONArray(types));
// for holding child elements with
// properties
JSONObject subProperties=new JSONObject();
// for holding child microformats with no
// property class
JSONArray subChildren=new JSONArray();
foreach(var child in root.getChildNodes()){
if(child is IElement) {
propertyWalk((IElement)child,
subProperties,subChildren);
}
}
if(subChildren.Length>0){
obj.put("children", subChildren);
}
if(types.Count>0){
// we imply missing properties here
// Imply p-name and p-url
if(!implyForLink(root,subProperties)){
if(hasSingleChildElementNamed(root,"a")){
implyForLink(getFirstChildElement(root),subProperties);
} else {
string pvalue=getPValue(root);
if(!StringUtility.isNullOrSpaces(pvalue)) {
setValueIfAbsent(subProperties,"name", pvalue);
}
}
}
// Also imply u-photo
if(StringUtility.toLowerCaseAscii(root.getLocalName()).Equals("img") &&
root.getAttribute("src")!=null){
setValueIfAbsent(subProperties,"photo", getUValue(root));
}
if(!subProperties.has("photo")){
IList<IElement> images=root.getElementsByTagName("img");
// If there is only one descendant image, imply
// u-photo
if(images.Count==1){
setValueIfAbsent(subProperties,"photo",
getUValue(images[0]));
}
}
}
obj.put("properties", subProperties);
if(hasProperties){
foreach(var cls in className){
if(cls.StartsWith("p-",StringComparison.Ordinal)){ // property
JSONObject clone=copyJson(obj);
clone.put("value",getPValue(root));
accumulateValue(properties,cls.Substring(2),clone);
} else if(cls.StartsWith("u-",StringComparison.Ordinal)){ // URL
JSONObject clone=copyJson(obj);
clone.put("value",getUValue(root));
accumulateValue(properties,cls.Substring(2),clone);
} else if(cls.StartsWith("dt-",StringComparison.Ordinal)){ // date/time
JSONObject clone=copyJson(obj);
clone.put("value",getDTValue(root,getLastKnownTime(properties)));
accumulateValue(properties,cls.Substring(3),clone);
} else if(cls.StartsWith("e-",StringComparison.Ordinal)){ // date/time
JSONObject clone=copyJson(obj);
clone.put("value",getEValue(root));
accumulateValue(properties,cls.Substring(2),clone);
}
}
} else {
children.put(obj);
}
return;
}
}
foreach(var child in root.getChildNodes()){
if(child is IElement) {
propertyWalk((IElement)child,properties,children);
}
}
}
private static void accumulateValue(JSONObject obj, string key, Object value)
{
JSONArray arr=null;
if(obj.has(key)){
arr=obj.getJSONArray(key);
} else {
arr=new JSONArray();
obj.put(key, arr);
}
arr.put(value);
}
/**
*
* Scans an HTML element for Microformats.org metadata.
* The resulting _object will contain an "items" property,
* an array of all Microformats items. Each item will
* have a "type" and "properties" properties.
*
* @param root the element to scan.
* @return a JSON _object containing Microformats metadata
*/
public static JSONObject getMicroformatsJSON(IElement root)
{
if((root)==null)throw new ArgumentNullException("root");
JSONObject obj=new JSONObject();
JSONArray items=new JSONArray();
propertyWalk(root,null,items);
obj.put("items", items);
return obj;
}
public static JSONObject getRelJSON(IElement root)
{
if((root)==null)throw new ArgumentNullException("root");
JSONObject obj=new JSONObject();
JSONArray items=new JSONArray();
JSONObject item=new JSONObject();
accumulateValue(item,"type","rel");
JSONObject props=new JSONObject();
relWalk(root,props);
item.put("properties", props);
items.put(item);
obj.put("items", items);
return obj;
}
private static void setValueIfAbsent(JSONObject obj, string key, Object value)
{
if(!obj.has(key)){
JSONArray arr=null;
arr=new JSONArray();
obj.put(key, arr);
arr.put(value);
}
}
public static Object patch(Object o, JSONArray patch)
{
// clone the _object in case of failure
o=cloneJsonObject(o);
for(int i=0;i<patch.Length;i++){
Object op=patch[i];
if(!(op is JSONObject))
throw new ArgumentException("patch");
if(o==null)
throw new InvalidOperationException("patch");
JSONObject patchOp=(JSONObject)op;
// NOTE: This algorithm requires "op" to exist
// only once; the JSONObject, however, does not
// allow duplicates
string opStr=getString(patchOp,"op");
if(opStr==null)
throw new ArgumentException("patch");
if("add".Equals(opStr)){
// operation
Object value=null;
try {
value=patchOp["value"];
} catch(System.Collections.Generic.KeyNotFoundException){
throw new ArgumentException("patch "+opStr+" value");
}
o=addOperation(o,opStr,getString(patchOp,"path"),value);
} else if("replace".Equals(opStr)){
// operation
Object value=null;
try {
value=patchOp["value"];
} catch(System.Collections.Generic.KeyNotFoundException){
throw new ArgumentException("patch "+opStr+" value");
}
o=replaceOperation(o,opStr,getString(patchOp,"path"),value);
} else if("remove".Equals(opStr)){
// Remove operation
string path=patchOp.getString("path");
if(path==null)throw new ArgumentException("patch "+opStr+" path");
if(path.Length==0) {
o=null;
} else {
removeOperation(o,opStr,getString(patchOp,"path"));
}
} else if("move".Equals(opStr)){
string path=patchOp.getString("path");
if(path==null)throw new ArgumentException("patch "+opStr+" path");
string fromPath=patchOp.getString("from");
if(fromPath==null)throw new ArgumentException("patch "+opStr+" from");
if(path.StartsWith(fromPath,StringComparison.Ordinal))
throw new ArgumentException("patch "+opStr);
Object movedObj=removeOperation(o,opStr,fromPath);
o=addOperation(o,opStr,path,cloneJsonObject(movedObj));
} else if("copy".Equals(opStr)){
string path=patchOp.getString("path");
if(path==null)throw new ArgumentException("patch "+opStr+" path");
string fromPath=patchOp.getString("from");
if(fromPath==null)throw new ArgumentException("patch "+opStr+" from");
JSONPointer pointer=JSONPointer.fromPointer(o, path);
if(!pointer.exists())
throw new System.Collections.Generic.KeyNotFoundException("patch "+opStr+" "+fromPath);
Object copiedObj=pointer.getValue();
o=addOperation(o,opStr,path,cloneJsonObject(copiedObj));
} else if("test".Equals(opStr)){
string path=patchOp.getString("path");
if(path==null)throw new ArgumentException("patch "+opStr+" path");
Object value=null;
try {
value=patchOp["value"];
} catch(System.Collections.Generic.KeyNotFoundException){
throw new ArgumentException("patch "+opStr+" value");
}
JSONPointer pointer=JSONPointer.fromPointer(o, path);
if(!pointer.exists())
throw new System.Collections.Generic.KeyNotFoundException("patch "+opStr+" "+path);
Object testedObj=pointer.getValue();
if((testedObj==null) ? (value!=null) : !testedObj.Equals(value))
throw new InvalidOperationException("patch "+opStr);
}
}
return (o==null) ? JSONObject.NULL : o;
}
public void writeObjectToStream(CacheControl o, Stream stream)
{
JSONObject jsonobj=new JSONObject();
jsonobj.put("cacheability",o.cacheability);
jsonobj.put("noStore",o.noStore);
jsonobj.put("noTransform",o.noTransform);
jsonobj.put("mustRevalidate",o.mustRevalidate);
jsonobj.put("requestTime",Convert.ToString(o.requestTime,CultureInfo.InvariantCulture));
jsonobj.put("responseTime",Convert.ToString(o.responseTime,CultureInfo.InvariantCulture));
jsonobj.put("maxAge",Convert.ToString(o.maxAge,CultureInfo.InvariantCulture));
jsonobj.put("date",Convert.ToString(o.date,CultureInfo.InvariantCulture));
jsonobj.put("uri",o.uri);
jsonobj.put("requestMethod",o.requestMethod);
jsonobj.put("code",o.code);
jsonobj.put("age",Convert.ToString(o.age,CultureInfo.InvariantCulture));
JSONArray jsonarr=new JSONArray();
foreach(var header in o.headers){
jsonarr.put(header);
}
jsonobj.put("headers",jsonarr);
StreamUtility.stringToStream(jsonobj.ToString(),stream);
}
/**
* Produce a JSONObject by combining a JSONArray of names with the values
* of this JSONArray.
* @param names A JSONArray containing a list of key strings. These will be
* paired with the values.
* @return A JSONObject, or null if there are no names or if this JSONArray
* has no values.
*/
public JSONObject toJSONObject(JSONArray names)
{
if (names == null || names.Length == 0 || length() == 0)
return null;
JSONObject jo = new JSONObject();
for (int i = 0; i < names.Length; i += 1) {
jo.put(names.getString(i), opt(i));
}
return jo;
}
/**
* Produce a JSONArray containing the values of the members of this
* JSONObject.
* @param names A JSONArray containing a list of key strings. This
* determines the sequence of the values in the result.
* @return A JSONArray of values.
*/
public JSONArray toJSONArray(JSONArray names)
{
if (names == null || names.Length == 0)
return null;
JSONArray ja = new JSONArray();
for (int i = 0; i < names.Length; i += 1) {
ja.put(opt(names.getString(i)));
}
return ja;
}
/**
* Produce a JSONArray containing the names of the elements of this
* JSONObject.
* @return A JSONArray containing the key strings, or null if the JSONObject
* is empty.
*/
public JSONArray names()
{
JSONArray ja = new JSONArray();
foreach(var key in keys()) {
ja.put(key);
}
if (ja.Length == 0)
return null;
return ja;
}
/**
* Accumulate values under a key. It is similar to the put method except
* that if there is already an _object stored under the key then a
* JSONArray is stored under the key to hold all of the accumulated values.
* If there is already a JSONArray, then the new value is appended to it.
* In contrast, the put method replaces the previous value.
*
* @param key A key _string.
* @param value An _object to be accumulated under the key.
* @return this.
* @ if the key is null
*/
public JSONObject accumulate(string key, Object value)
{
JSONArray a;
Object o = opt(key);
if (o == null) {
put(key, value);
} else if (o is JSONArray) {
a = (JSONArray)o;
a.put(value);
} else {
a = new JSONArray();
a.put(o);
a.put(value);
put(key, a);
}
return this;
}
public static void main(string[] args)
{
string json="["+
"{ # foo\n\"foo-key\":\"foo-value\"},\n"+
"{ /* This is a\n # multiline comment.*/\n\"bar-key\":\"bar-value\"}]";
Console.WriteLine(json);
JSONArray obj=new JSONArray(json,
JSONObject.OPTION_SHELL_COMMENTS | // Support SHELL-style comments
JSONObject.OPTION_ADD_COMMENTS // Incorporate comments in the JSON _object
);
Console.WriteLine(obj); // Output the JSON _object
// Objects with comments associated with them will
// now contain a "@comment" key; get the JSON Pointers
// (RFC6901) to these objects and remove the "@comment" keys.
IDictionary<string,Object> pointers=JSONPointer.getPointersWithKeyAndRemove(obj,"@comment");
// For each JSON Pointer, get its corresponding _object.
// They will always be JSONObjects.
foreach(var pointer in pointers.Keys){
JSONObject subobj=(JSONObject)JSONPointer.getObject(obj,pointer);
Console.WriteLine(subobj); // Output the _object
Console.WriteLine(pointers[pointer]); // Output the key's value
}
}