- Update

Extensions/XEP-0335/NSXMLElement+XEP_0335.h

@@ -0,0 +1,21 @@
+#import <Foundation/Foundation.h>
+#if TARGET_OS_IPHONE
+#import "DDXML.h"
+#endif
+
+@interface NSXMLElement (XEP_0335)
+
+- (NSXMLElement *)JSONContainer;
+
+- (BOOL)isJSONContainer;
+- (BOOL)hasJSONContainer;
+
+- (NSString *)JSONContainerString;
+- (NSData *)JSONContainerData;
+- (id)JSONContainerObject;
+
+- (void)addJSONContainerWithString:(NSString *)JSONContainerString;
+- (void)addJSONContainerWithData:(NSData *)JSONContainerData;
+- (void)addJSONContainerWithObject:(id)JSONContainerObject;
+
+@end

Extensions/XEP-0335/NSXMLElement+XEP_0335.m

@@ -0,0 +1,87 @@
+#import "NSXMLElement+XEP_0335.h"
+#import "NSXMLElement+XMPP.h"
+
+#if ! __has_feature(objc_arc)
+#warning This file must be compiled with ARC. Use -fobjc-arc flag (or convert project to ARC).
+#endif
+
+#define XEP_0335_NAME @"json"
+#define XEP_0335_XMLNS @"urn:xmpp:json:0"
+
+@implementation NSXMLElement (XEP_0335)
+
+- (NSXMLElement *)JSONContainer
+{
+    if([self isJSONContainer])
+    {
+        return self;
+    }
+    else
+    {
+        return [self elementForName:XEP_0335_NAME xmlns:XEP_0335_XMLNS];
+    }
+}
+
+- (BOOL)isJSONContainer
+{
+    if([[self name] isEqualToString:XEP_0335_NAME] && [[self xmlns] isEqualToString:XEP_0335_XMLNS])
+    {
+        return YES;
+    }
+    else
+    {
+        return NO;
+    }
+}
+
+- (BOOL)hasJSONContainer
+{
+    return [self elementForName:XEP_0335_NAME xmlns:XEP_0335_XMLNS] != nil;
+}
+
+- (NSString *)JSONContainerString
+{
+    return [[self JSONContainer] stringValue];
+}
+
+- (NSData *)JSONContainerData
+{
+    NSString *JSONContainerString = [self JSONContainerString];
+    return [JSONContainerString dataUsingEncoding:NSUTF8StringEncoding];
+}
+
+- (id)JSONContainerObject
+{
+    NSData *JSONData = [self JSONContainerData];
+    return [NSJSONSerialization JSONObjectWithData:JSONData options:0 error:nil];
+}
+
+- (void)addJSONContainerWithString:(NSString *)JSONContainerString
+{
+    if([JSONContainerString length])
+    {
+        NSXMLElement *container = [NSXMLElement elementWithName:XEP_0335_NAME xmlns:XEP_0335_XMLNS];
+        [container setStringValue:JSONContainerString];
+        [self addChild:container];
+    }
+}
+
+- (void)addJSONContainerWithData:(NSData *)JSONContainerData
+{
+    if([JSONContainerData length])
+    {
+        NSString *JSONContainerString = [[NSString alloc] initWithData:JSONContainerData encoding:NSUTF8StringEncoding];
+        [self addJSONContainerWithString:JSONContainerString];
+    }
+}
+
+- (void)addJSONContainerWithObject:(id)JSONContainerObject
+{
+    if([NSJSONSerialization isValidJSONObject:JSONContainerObject])
+    {
+        NSData *JSONContainerData = [NSJSONSerialization dataWithJSONObject:JSONContainerObject options:0 error:nil];
+        [self addJSONContainerWithData:JSONContainerData];
+    }
+}
+
+@end