Question

This is my XML

<MyXML ID="tester" Server="example.com">
  <CONF>
    <MYAPP LOCN="/Application/data/" DATADIR="/tmp/data">
     ..
  </CONF>
</MyXML>

This is the Code i’m using

  NSString *xmlFilePath =@"/Applications/conf/MyConf.xml";
  NSLog(@"%@",xmlFilePath);
  NSData *xmlData = [NSData dataWithContentsOfFile:xmlFilePath];
  NSString *xPathQuery =@"/MyXML";
  NSArray *xmlArray = PerformXMLXPathQuery(xmlData,xPathQuery);

It gives me the full XML as NSArray. How to traverse through this NSArray or, how to use XPath to get exactly the Nodes and attributes.
I’ve used

  NSString *xPathQuery =@"/MyXML[@ID]";

but it doesn’t returns the attribute ID, it just returns null.

I think it would be best to traverse through the NSArray, but how to do that(I’m a newbie to Objective C and when i looked for traversing through the NSArray returned by ,i’ve just got examples for HTML NSArray only)

Answer 1

Take a look at libxml2 wrapper and using libxml2 for XML parsing and XPath queries in Cocoa article.

NSArray *PerformXMLXPathQuery(NSData *document, NSString *query);
NSArray *PerformHTMLXPathQuery(NSData *document, NSString *query);

For an entire XML document, contained in the NSData object “document”,
this function executes the XPath query in the NSString “query” and
returns an NSArray of NSDictionary node objects for nodes that match
the query.

The only difference between the two listed functions is that the the
first expects proper XML data and the second expects HTML data.