KissXML is a good approach for parsing xml data, and the x-path function make it more powerful.
Integrate With You Project And KissXML
- Download source codes form here
- Add all the files to your project (excluding DDXMLTesting)
- Configure you project to work with libxml
click Project -> Edit Project Settings
You’ll be adding this to your compiler instructions
OTHER_LDFLAGS = -lxml2
HEADER_SEARCH_PATHS = /usr/include/libxml2
Using KissXML
Here is a quick demo to indicate you how it works.
For example, we need to get the SRC value of each media field from the target xml file.
<smil xmlns="http://www.w3.org/2000/SMIL20/CR/Language">
<head>
</head>
<body>
<par dur="120000ms" >
<text region="Text" src="att000.txt" />
</par>
<par dur="120000ms" >
<text region="Text" src="att010.txt" />
</par>
<par dur="10000ms" >
<img region="Image" src="att020.jpg"/>
</par>
<par dur="120000ms" >
<text region="Text" src="att040.txt" />
</par>
<par dur="10000ms" >
<img region="Image" src="att120.gif"/>
</par>
</body>
</smil>
Here are the codes !
//hack to remove xmlns => avoid xpath search not works
xmlStr = [xmlStr stringByReplacingOccurrencesOfString:@"xmlns" withString:@"noNSxml"];
NSMutableArray* contents = [NSMutableArray array];
NSError* error = nil;
DDXMLDocument* xmlDoc = [[DDXMLDocument alloc] initWithXMLString:xmlStr options:0 error:&error];
if (error) {
NSLog(@"%@",[error localizedDescription]);
return nil;
}
NSArray* resultNodes = nil;
resultNodes = [xmlDoc nodesForXPath:@"//audio | //text | //image | //img" error:&error];
if (error) {
NSLog(@"%@",[error localizedDescription]);
return nil;
}
for(DDXMLElement* resultElement in resultNodes)
{
NSString* name = [resultElement name];
//audio , text or other media type
NSString* fileName = [[resultElement attributeForName:@"src"] stringValue];
// 0.txt
}
Note, I replaced the “xmlns” inside the xml file, because it weird xpath would failed if namespace available at a XML file(it might a bug)
And at last, have fun!