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Implement DDXMLNode nodesForXPath:namespaceMappings:error. #27

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Implement DDXMLNode nodesForXPath:namespaceMappings:error. #27

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5 changes: 5 additions & 0 deletions KissXML/DDXMLNode.h
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Original file line number Diff line number Diff line change
Expand Up @@ -150,6 +150,11 @@ enum {
#pragma mark --- XPath/XQuery ---

- (NSArray *)nodesForXPath:(NSString *)xpath error:(NSError **)error;

// This is an extension over NSXMLNode.
// It is required if you are using XPath with documents with default namespaces.
- (NSArray *)nodesForXPath:(NSString *)xpath namespaceMappings:(NSDictionary*)namespaceMappings error:(NSError **)error;

//- (NSArray *)objectsForXQuery:(NSString *)xquery constants:(NSDictionary *)constants error:(NSError **)error;
//- (NSArray *)objectsForXQuery:(NSString *)xquery error:(NSError **)error;

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34 changes: 26 additions & 8 deletions KissXML/DDXMLNode.m
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Original file line number Diff line number Diff line change
Expand Up @@ -1195,6 +1195,11 @@ - (NSString *)XMLStringWithOptions:(NSUInteger)options
////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////

- (NSArray *)nodesForXPath:(NSString *)xpath error:(NSError **)error
{
return [self nodesForXPath:xpath namespaceMappings:nil error:error];
}

- (NSArray *)nodesForXPath:(NSString *)xpath namespaceMappings:namespaceMappings error:(NSError **)error
{
#if DDXML_DEBUG_MEMORY_ISSUES
DDXMLNotZombieAssert();
Expand Down Expand Up @@ -1230,15 +1235,28 @@ - (NSArray *)nodesForXPath:(NSString *)xpath error:(NSError **)error
xpathCtx = xmlXPathNewContext(doc);
xpathCtx->node = (xmlNodePtr)genericPtr;

xmlNodePtr rootNode = (doc)->children;
if(rootNode != NULL)
{
xmlNsPtr ns = rootNode->nsDef;
while(ns != NULL)
if (namespaceMappings) {
for (NSString* k in namespaceMappings) {
NSString* v = [namespaceMappings objectForKey:k];
xmlXPathRegisterNs(xpathCtx, [k xmlChar], [v xmlChar]);
}
}
else {
xmlNodePtr rootNode = doc->children;
if(rootNode != NULL)
{
xmlXPathRegisterNs(xpathCtx, ns->prefix, ns->href);

ns = ns->next;
xmlNsPtr ns = rootNode->nsDef;
while(ns != NULL)
{
const xmlChar* prefix = ns->prefix;
if (!prefix || !*prefix)
{
prefix = rootNode->name;
}
xmlXPathRegisterNs(xpathCtx, prefix, ns->href);

ns = ns->next;
}
}
}

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