Ruby

Iterate over Direct Children with a Specific Tag

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Demonstrates how to iterate over direct children having a specific tag.

The input XML, available at http://www.chilkatsoft.com/data/fruit.xml, is this:

<root>
    <fruit color="red">apple</fruit>
    <fruit color="green">pear</fruit>
    <veg color="orange">carrot</veg>
    <meat animal="cow">beef</meat>
    <xyz>
        <fruit color="blue">blueberry</fruit>
        <veg color="green">broccoli</veg>
    </xyz>
    <fruit color="purple">grape</fruit>
    <cheese color="yellow">cheddar</cheese>
</root>

Ruby

require 'chilkat'

success = false

xml = Chilkat::CkXml.new()

# The sample input XML is available at http://www.chilkatsoft.com/data/fruit.xml
success = xml.LoadXmlFile("fruit.xml")
if (success != true)
    print xml.lastErrorText() + "\n";
    exit
end

#  Get the number of direct children having the tag "fruit"
numWithTag = xml.NumChildrenHavingTag("fruit")

if (numWithTag > 0)

    for i in 0 .. numWithTag - 1
        # child is a CkXml
        child = xml.GetNthChildWithTag("fruit",i)
        print i.to_s() + ": " + child.tag() + " : " + child.content() + "\n";

    end
    print "-----" + "\n";

    # Do the same as the above loop, but instead of creating
    # a new object instance for each child, call GetNthChildWithTag2 to
    # update the object's reference instead.
    for i in 0 .. numWithTag - 1
        # Navigate to the Nth child.  
        success = xml.GetNthChildWithTag2("fruit",i)
        print i.to_s() + ": " + xml.tag() + " : " + xml.content() + "\n";
        # Navigate back up to the parent:
        success = xml.GetParent2()
    end
    print "-----" + "\n";
end