以太之内 生存之上 » xml http://ixhan.com Live in your world, get owned in mine Tue, 15 May 2012 04:08:15 +0000 en hourly 1 http://wordpress.org/?v=3.3.2 Tutorial of kissXML(iPhone)http://ixhan.com/2010/03/tutorial-of-kissxml-iphone/ http://ixhan.com/2010/03/tutorial-of-kissxml-iphone/#comments Wed, 24 Mar 2010 17:27:44 +0000 xhan http://ixhan.com/?p=289 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 …

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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!

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