forked from robbiehanson/XMPPFramework
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XMPPIQ.m
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/
XMPPIQ.m
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#import "XMPPIQ.h"
#import "XMPPJID.h"
#import "NSXMLElement+XMPP.h"
#import <objc/runtime.h>
#if ! __has_feature(objc_arc)
#warning This file must be compiled with ARC. Use -fobjc-arc flag (or convert project to ARC).
#endif
@implementation XMPPIQ
+ (void)initialize
{
// We use the object_setClass method below to dynamically change the class from a standard NSXMLElement.
// The size of the two classes is expected to be the same.
//
// If a developer adds instance methods to this class, bad things happen at runtime that are very hard to debug.
// This check is here to aid future developers who may make this mistake.
//
// For Fearless And Experienced Objective-C Developers:
// It may be possible to support adding instance variables to this class if you seriously need it.
// To do so, try realloc'ing self after altering the class, and then initialize your variables.
size_t superSize = class_getInstanceSize([NSXMLElement class]);
size_t ourSize = class_getInstanceSize([XMPPIQ class]);
if (superSize != ourSize)
{
NSLog(@"Adding instance variables to XMPPIQ is not currently supported!");
exit(15);
}
}
+ (XMPPIQ *)iqFromElement:(NSXMLElement *)element
{
object_setClass(element, [XMPPIQ class]);
return (XMPPIQ *)element;
}
+ (XMPPIQ *)iq
{
return [[XMPPIQ alloc] initWithType:nil to:nil elementID:nil child:nil];
}
+ (XMPPIQ *)iqWithType:(NSString *)type
{
return [[XMPPIQ alloc] initWithType:type to:nil elementID:nil child:nil];
}
+ (XMPPIQ *)iqWithType:(NSString *)type to:(XMPPJID *)jid
{
return [[XMPPIQ alloc] initWithType:type to:jid elementID:nil child:nil];
}
+ (XMPPIQ *)iqWithType:(NSString *)type to:(XMPPJID *)jid elementID:(NSString *)eid
{
return [[XMPPIQ alloc] initWithType:type to:jid elementID:eid child:nil];
}
+ (XMPPIQ *)iqWithType:(NSString *)type to:(XMPPJID *)jid elementID:(NSString *)eid child:(NSXMLElement *)childElement
{
return [[XMPPIQ alloc] initWithType:type to:jid elementID:eid child:childElement];
}
+ (XMPPIQ *)iqWithType:(NSString *)type elementID:(NSString *)eid
{
return [[XMPPIQ alloc] initWithType:type to:nil elementID:eid child:nil];
}
+ (XMPPIQ *)iqWithType:(NSString *)type elementID:(NSString *)eid child:(NSXMLElement *)childElement
{
return [[XMPPIQ alloc] initWithType:type to:nil elementID:eid child:childElement];
}
+ (XMPPIQ *)iqWithType:(NSString *)type child:(NSXMLElement *)childElement
{
return [[XMPPIQ alloc] initWithType:type to:nil elementID:nil child:childElement];
}
- (id)init
{
return [self initWithType:nil to:nil elementID:nil child:nil];
}
- (id)initWithType:(NSString *)type
{
return [self initWithType:type to:nil elementID:nil child:nil];
}
- (id)initWithType:(NSString *)type to:(XMPPJID *)jid
{
return [self initWithType:type to:jid elementID:nil child:nil];
}
- (id)initWithType:(NSString *)type to:(XMPPJID *)jid elementID:(NSString *)eid
{
return [self initWithType:type to:jid elementID:eid child:nil];
}
- (id)initWithType:(NSString *)type to:(XMPPJID *)jid elementID:(NSString *)eid child:(NSXMLElement *)childElement
{
if ((self = [super initWithName:@"iq"]))
{
if (type)
[self addAttributeWithName:@"type" stringValue:type];
if (jid)
[self addAttributeWithName:@"to" stringValue:[jid full]];
if (eid)
[self addAttributeWithName:@"id" stringValue:eid];
if (childElement)
[self addChild:childElement];
}
return self;
}
- (id)initWithType:(NSString *)type elementID:(NSString *)eid
{
return [self initWithType:type to:nil elementID:eid child:nil];
}
- (id)initWithType:(NSString *)type elementID:(NSString *)eid child:(NSXMLElement *)childElement
{
return [self initWithType:type to:nil elementID:eid child:childElement];
}
- (id)initWithType:(NSString *)type child:(NSXMLElement *)childElement
{
return [self initWithType:type to:nil elementID:nil child:childElement];
}
- (NSString *)type
{
return [[self attributeStringValueForName:@"type"] lowercaseString];
}
- (BOOL)isGetIQ
{
return [[self type] isEqualToString:@"get"];
}
- (BOOL)isSetIQ
{
return [[self type] isEqualToString:@"set"];
}
- (BOOL)isResultIQ
{
return [[self type] isEqualToString:@"result"];
}
- (BOOL)isErrorIQ
{
return [[self type] isEqualToString:@"error"];
}
- (BOOL)requiresResponse
{
// An entity that receives an IQ request of type "get" or "set" MUST reply with an IQ response
// of type "result" or "error" (the response MUST preserve the 'id' attribute of the request).
return [self isGetIQ] || [self isSetIQ];
}
- (NSXMLElement *)childElement
{
NSArray *children = [self children];
for (NSXMLElement *child in children)
{
// Careful: NSOrderedSame == 0
NSString *childName = [child name];
if (childName && ([childName caseInsensitiveCompare:@"error"] != NSOrderedSame))
{
return child;
}
}
return nil;
}
- (NSXMLElement *)childErrorElement
{
NSArray *children = [self children];
for (NSXMLElement *child in children)
{
// Careful: NSOrderedSame == 0
NSString *childName = [child name];
if (childName && ([childName caseInsensitiveCompare:@"error"] == NSOrderedSame))
{
return child;
}
}
return nil;
}
@end