(Objective-C) Get XML Attribute Value by Path

Demonstrates how to get an attribute value by path.

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#import <CkoXml.h>
#import <NSString.h>

// The XML used in this example contains the following:
// This example will get the value of the "spay-neuter" attribute for each pig.

// <pig-rescue>
//   <herd name="Cathy">
// 	<species name="pot belly pig">
// 	    <animal>
// 	        <name>Molly II</name>
// 	        <birth>February, 1998</birth>
// 			<in-date>January, 2000</in-date>
// 			<from>Middle Ave.</from>
// 			<gender spay-neuter="yes">F</gender>
// 			<info>Molly came from a place where an old, ill man had too many animals.
// 	              	The animals were seldom fed and rats would eat the newborn piglets.
// 	             	 When Molly was found at one week old, she was the only piglet of 
// 	              	her siblings who did not get stepped on by a cow. She is a sweet, 
// 	              	friendly pig who likes to hang out on Cathy's porch on the lounge 
// 	              	pad.
// 			</info>
// 		</animal>
// 	    <animal>
// 			<name>Nigel</name>
// 			<birth>June, 1991</birth>
// 			<in-date>August, 1991</in-date>
// 			<from>Breeder</from>
// 			<gender spay-neuter="no">M</gender>
// 			<info>
// 			 	Nigel was the first pig and the reason for the rescue in the
// 			 	first place. He is 13 now and doing well, but takes a number 
// 				of medications, as you can see below.
// 			</info>
// 		</animal>		
// 	</species>
//   </herd>
// </pig-rescue>

CkoXml *xml = [[CkoXml alloc] init];
BOOL success = [xml LoadXmlFile: @"qa_data/xml/twoPigs.xml"];

// Use the ChilkatPath method to return the value of a particular attribute at a given path.
// A path ending with "(attributeName)" will return the value for the given attribute.
NSString *path = @"herd|species|animal[0]|gender|(spay-neuter)";
NSString *attrValue = [xml ChilkatPath: path];
NSLog(@"%@%@",@"1st pig spay-neuter: ",attrValue);

path = @"herd|species|animal[1]|gender|(spay-neuter)";
attrValue = [xml ChilkatPath: path];
NSLog(@"%@%@",@"2nd pig spay-neuter: ",attrValue);

// We could also do it like this:
path = @"herd|species|animal[i]|gender|(spay-neuter)";
int i = 0;
while (i < [[xml NumChildrenAt: @"herd|species"] intValue]) {
    xml.I = [NSNumber numberWithInt: i];
    NSLog(@"%@%d%@%@",@"spay-neuter for pig number ",i + 1,@": ",[xml ChilkatPath: path]);
    i = i + 1;
}