KissXML example

http://labs.grupow.com/blog/2010/11/04/kissxml

KissXML example

NOV 4TH, 2010

KissXML was inspired by the TouchXML project, but it was created to add full support for generating XML as well as supporting the entire NSXML API. KissXML is a good approach for parsing xml data, and the x-path functionallity makes it more powerful, you could also use NSXMLParser, it's not bad but it's very very slow and it uses lots of memory.

Creating Template Project

• Download source codes form here
• create a new View-Based Application project in xcode and name it: KissXML
• in your project create a new group, name it DDXML
• inside this group add NSStringAdditions.h, NSStringAdditions.m and all the files starting with DDXML (excluding DDXMLTesting.h and DDXMLTesting.m) at the end you got something like this:

• click Project -> Edit Project Settings.
• click build tab.
• add this to your compiler instructions Other Linker Flags = -lxml2 Header Search Paths = /usr/include/libxml2
  

Testing KissXML

add the sample XML file to your project, you can find it here

import DDXML in to kissXMLViewController.h

  #import "DDXML.h"  

now go to kissXMLViewController.m and replace all the code with this:

  //  //  kissXMLViewController.m  //  kissXML  //    #import "kissXMLViewController.h"    // Private methods  @interface kissXMLViewController ()  -(void)parseXML:(NSString*)source;  @end    @implementation kissXMLViewController    /*  // The designated initializer. Override to perform setup that is required before the view is loaded.  - (id)initWithNibName:(NSString *)nibNameOrNil bundle:(NSBundle *)nibBundleOrNil {      if ((self = [super initWithNibName:nibNameOrNil bundle:nibBundleOrNil])) {          // Custom initialization      }      return self;  }  */    /*  // Implement loadView to create a view hierarchy programmatically, without using a nib.  - (void)loadView {  }  */    // Implement viewDidLoad to do additional setup after loading the view, typically from a nib.  - (void)viewDidLoad {        [super viewDidLoad];      NSError *error;      NSString *content = [NSString stringWithContentsOfFile:[[NSBundle mainBundle] pathForResource:@"bookstore" ofType:@"xml"] encoding:NSUTF8StringEncoding error:&error;];      [self parseXML:content];  }    -(void)parseXML:(NSString*)source {        NSError *error = nil;      DDXMLDocument *theDocument = [[DDXMLDocument alloc] initWithXMLString:source options:0 error:&error;];        NSArray *results = [theDocument nodesForXPath:@"/bookstore/book[price>35]" error:&error;];        for (DDXMLElement *book in results) {            NSLog(@"-----------");            NSString *category = [[book attributeForName:@"category"] stringValue];            NSLog(@"category:%@",category);            for (int i = 0; i < [book childCount]; i++) {              DDXMLNode *node = [book childAtIndex:i];              NSString *name = [node name];              NSString *value = [node stringValue];              NSLog(@"%@:%@",name,value);          }      }  }    /*  // Override to allow orientations other than the default portrait orientation.  - (BOOL)shouldAutorotateToInterfaceOrientation:(UIInterfaceOrientation)interfaceOrientation {      // Return YES for supported orientations      return (interfaceOrientation == UIInterfaceOrientationPortrait);  }  */    - (void)didReceiveMemoryWarning {      // Releases the view if it doesn't have a superview.      [super didReceiveMemoryWarning];        // Release any cached data, images, etc that aren't in use.  }    - (void)viewDidUnload {      // Release any retained subviews of the main view.      // e.g. self.myOutlet = nil;  }    - (void)dealloc {      [super dealloc];  }    @end  

when you compile and run, you should see something like this:

  [Session started at 2010-11-04 12:29:11 -0600.]  2010-11-04 12:29:12.418 kissXML[1619:207] -----------  2010-11-04 12:29:12.420 kissXML[1619:207] category:WEB  2010-11-04 12:29:12.421 kissXML[1619:207] title:XQuery Kick Start  2010-11-04 12:29:12.422 kissXML[1619:207] author:James McGovern  2010-11-04 12:29:12.423 kissXML[1619:207] author:Per Bothner  2010-11-04 12:29:12.424 kissXML[1619:207] author:Kurt Cagle  2010-11-04 12:29:12.426 kissXML[1619:207] author:James Linn  2010-11-04 12:29:12.428 kissXML[1619:207] author:Vaidyanathan Nagarajan  2010-11-04 12:29:12.429 kissXML[1619:207] year:2003  2010-11-04 12:29:12.430 kissXML[1619:207] price:49.99  2010-11-04 12:29:12.432 kissXML[1619:207] -----------  2010-11-04 12:29:12.432 kissXML[1619:207] category:WEB  2010-11-04 12:29:12.433 kissXML[1619:207] title:Learning XML  2010-11-04 12:29:12.433 kissXML[1619:207] author:Erik T. Ray  2010-11-04 12:29:12.434 kissXML[1619:207] year:2003  2010-11-04 12:29:12.435 kissXML[1619:207] price:39.95  

as you can see, it's very simple  setting up your project to get it work with KissXML if you want to learn more about x-path you can go to: http://www.w3schools.com/xpath/default.asp there are great tutororials about it.