131 lines
4.1 KiB
Objective-C
131 lines
4.1 KiB
Objective-C
//
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// MGMXMLElement.m
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// MGMXML
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//
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// Created by Mr. Gecko on 9/22/10.
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// Copyright (c) 2010 Mr. Gecko's Media (James Coleman). All rights reserved. http://mrgeckosmedia.com/
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//
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#import "MGMXMLElement.h"
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#import "MGMXMLDocument.h"
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#import "MGMXMLAddons.h"
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@implementation MGMXMLElement
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- (id)initWithXMLString:(NSString *)string error:(NSError **)error {
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MGMXMLDocument *document = [[MGMXMLDocument alloc] initWithXMLString:string options:0 error:error];
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MGMXMLElement *element = nil;
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if (document!=nil) {
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element = [[document rootElement] retain];
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if (element!=nil)
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[element detach];
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[document release];
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}
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return element;
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}
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- (NSArray *)elementsForName:(NSString *)name URI:(NSString *)URI resolvingNamespacePrefix:(BOOL)resolveNamespacePrefix {
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NSMutableArray *elements = [NSMutableArray array];
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if (resolveNamespacePrefix && URI!=nil) {
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NSString *prefix = [self resolvePrefixForNamespaceURI:URI];
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if (prefix!=nil)
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name = [NSString stringWithFormat:@"%@:%@", prefix, name];
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}
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NSString *localName = [[self class] localNameForName:name];
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BOOL hasPrefix = ([[self class] prefixForName:localName]!=nil);
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xmlNodePtr child = MGMXMLNodePtr->children;
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while (child!=NULL) {
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if (child->type==MGMXMLElementKind) {
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BOOL shouldAddElement = NO;
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if (URI==nil) {
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shouldAddElement = xmlStrEqual(child->name, [name xmlString]);
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} else {
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if (hasPrefix && xmlStrEqual(child->name, [name xmlString]))
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shouldAddElement = YES;
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else if (child->ns!=NULL)
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shouldAddElement = xmlStrEqual(child->name, [(hasPrefix ? localName : name) xmlString]) && xmlStrEqual(child->ns->href, [URI xmlString]);
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}
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if (shouldAddElement)
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[elements addObject:[MGMXMLElement nodeWithTypeXMLPtr:(xmlTypPtr)child]];
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}
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child = child->next;
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}
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return elements;
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}
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- (NSArray *)elementsForName:(NSString *)name {
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NSString *localName = [[self class] localNameForName:name];
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NSString *prefix = [[self class] prefixForName:name];
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NSString *uri = nil;
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if (prefix!=nil) {
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if (MGMXMLNodePtr->doc==NULL) {
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NSLog(@"You may not search for elements with a namespace if there is no document.");
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return nil;
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}
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xmlNsPtr namespace = xmlSearchNs(MGMXMLNodePtr->doc, MGMXMLNodePtr, [prefix xmlString]);
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if (namespace!=NULL)
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uri = [NSString stringWithXMLString:namespace->href];
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}
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return [self elementsForName:localName URI:uri resolvingNamespacePrefix:NO];
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}
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- (NSArray *)elementsForLocalName:(NSString *)localName URI:(NSString *)URI {
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return [self elementsForName:localName URI:URI resolvingNamespacePrefix:YES];
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}
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- (void)addAttribute:(MGMXMLNode *)attribute {
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if ([attribute kind]==MGMXMLAttributeKind && [attribute commonXML]->parent!=NULL) {
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[self removeAttributeForName:[attribute name]];
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xmlAddChild(MGMXMLNodePtr, (xmlNodePtr)[attribute commonXML]);
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}
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}
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- (void)removeAttributeForName:(NSString *)name {
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xmlAttrPtr attribute = MGMXMLNodePtr->properties;
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while (attribute!=NULL) {
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if (xmlStrEqual(attribute->name, [name xmlString])) {
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[[self class] detatchAttribute:attribute fromNode:MGMXMLNodePtr];
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if(attribute->_private == NULL)
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xmlFreeProp(attribute);
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break;
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}
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attribute = attribute->next;
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}
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}
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- (NSArray *)attributes {
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NSMutableArray *attributes = [NSMutableArray array];
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xmlAttrPtr attribute = MGMXMLNodePtr->properties;
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while (attribute!=NULL) {
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[attributes addObject:[MGMXMLNode nodeWithTypeXMLPtr:(xmlTypPtr)attribute]];
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attribute = attribute->next;
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}
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return attributes;
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}
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- (MGMXMLNode *)attributeForName:(NSString *)name {
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xmlAttrPtr attribute = MGMXMLNodePtr->properties;
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while (attribute!=NULL) {
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if (xmlStrEqual(attribute->name, [name xmlString]))
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return [MGMXMLNode nodeWithTypeXMLPtr:(xmlTypPtr)attribute];
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attribute = attribute->next;
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}
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return nil;
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}
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- (NSString *)resolvePrefixForNamespaceURI:(NSString *)namespaceURI {
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xmlNodePtr child = MGMXMLNodePtr;
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while (child!=NULL) {
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xmlNsPtr namespace = child->nsDef;
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while (namespace!=NULL) {
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if (xmlStrEqual(namespace->href, [namespaceURI xmlString])) {
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if (namespace->prefix!=NULL)
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return [NSString stringWithXMLString:namespace->prefix];
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}
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namespace = namespace->next;
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}
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}
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return nil;
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}
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@end |