Dart

Get XML Attribute Value by Path

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Demonstrates how to get an attribute value by path. Dart

import 'package:chilkat/chilkat.dart';

void main() {
  // 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>

  final xml = CkXml();
  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.
  var path = 'herd|species|animal[0]|gender|(spay-neuter)';
  var attrValue = xml.chilkatPath(path);
  print('1st pig spay-neuter: $attrValue');

  path = 'herd|species|animal[1]|gender|(spay-neuter)';
  attrValue = xml.chilkatPath(path);
  print('2nd pig spay-neuter: $attrValue');

  // We could also do it like this:
  path = 'herd|species|animal[i]|gender|(spay-neuter)';
  var i = 0;
  while (i < xml.numChildrenAt('herd|species')) {
    xml.i = i;
    print('spay-neuter for pig number ${i + 1}: ${xml.chilkatPath(path)}');
    i++;
  }
}